[Kernel-packages] [Bug 1840750] Re: [Potential Regression] System crashes when running ftrace test in ubuntu_kernel_selftests
** Changed in: ubuntu-kernel-tests Status: New => Fix Released -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1840750 Title: [Potential Regression] System crashes when running ftrace test in ubuntu_kernel_selftests Status in ubuntu-kernel-tests: Fix Released Status in linux package in Ubuntu: Invalid Status in linux source package in Disco: Fix Released Bug description: [Impact] ftrace test in ubuntu_kernel_selftests causes a system crash + reboot when testing "Register/unregister many kprobe events". [Fix] The issue has been discussed in the following LKML thread: https://lkml.org/lkml/2019/6/5/274 and the following 3 upstream commits have been identified to resolve this issue: d2a68c4effd8 x86/ftrace: Do not call function graph from dynamic trampolines 3c0dab44e227 x86/ftrace: Set trampoline pages as executable 7298e24f9042 x86/kprobes: Set instruction page as executable From these commits, the Disco kernel currently in -proposed (5.0.0-26.27) is missing only the following commit, which has been already committed as part of LP: #1839887 (Disco update: upstream stable patchset 2019-08-12) but not yet released: 7298e24f9042 x86/kprobes: Set instruction page as executable [Regression potential] The commit touches the x86/kprobes code so there's a chance of regression there which I would flag as medium. However, it has been applied upstream for v5.2-rc1 and there is no follow-up commits marked as fix for it. -- This issue is 100% reproducible. It looks like this has something to do with the Disco kernel in proposed (5.0.0-1014.14). Test combinations: kernel in updates + source code master branch = OK kernel in proposed + source code master-next branch = NOT OK kernel in proposed + source code master branch = NOT OK The system will crash and reboot itself when testing: "Register/unregister many kprobe events" [33] Kprobe event with comm arguments [PASS] [34] Kprobe event string type argument[PASS] [35] Kprobe event symbol argument [PASS] [36] Kprobe event argument syntax [PASS] [37] Kprobes event arguments with types [PASS] [38] Kprobe event auto/manual naming [PASS] [39] Kprobe dynamic event with function tracer[PASS] [40] Kretprobe dynamic event with arguments [PASS] [41] Kretprobe dynamic event with maxactive [PASS] [42] Register/unregister many kprobe events packet_write_wait: Connection to 35.233.208.253 port 22: Broken pipe Tried with use "tail -f /var/log/syslog" and "dmesg -w" to see what happened, but it will just disconnected and reboot itself. ProblemType: Bug DistroRelease: Ubuntu 19.04 Package: linux-image-5.0.0-1014-gcp 5.0.0-1014.14 ProcVersionSignature: Ubuntu 5.0.0-1014.14-gcp 5.0.21 Uname: Linux 5.0.0-1014-gcp x86_64 ApportVersion: 2.20.10-0ubuntu27.1 Architecture: amd64 Date: Tue Aug 20 08:13:13 2019 SourcePackage: linux-signed-gcp UpgradeStatus: No upgrade log present (probably fresh install) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu-kernel-tests/+bug/1840750/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
[Kernel-packages] [Bug 1840750] Re: [Potential Regression] System crashes when running ftrace test in ubuntu_kernel_selftests
This bug was fixed in the package linux - 5.0.0-27.28 --- linux (5.0.0-27.28) disco; urgency=medium * disco/linux: 5.0.0-27.28 -proposed tracker (LP: #1840816) * [Potential Regression] System crashes when running ftrace test in ubuntu_kernel_selftests (LP: #1840750) - x86/kprobes: Set instruction page as executable linux (5.0.0-26.27) disco; urgency=medium * disco/linux: 5.0.0-26.27 -proposed tracker (LP: #1839972) * Packaging resync (LP: #1786013) - [Packaging] update helper scripts * alsa/hdmi: add icelake hdmi audio support for a Dell machine (LP: #1836916) - ALSA: hda: hdmi - add Icelake support - ALSA: hda/hdmi - Remove duplicated define - ALSA: hda/hdmi - Fix i915 reverse port/pin mapping * input/mouse: alps trackpoint-only device doesn't work (LP: #1836752) - Input: alps - don't handle ALPS cs19 trackpoint-only device - Input: alps - fix a mismatch between a condition check and its comment * [18.04 FEAT] Enhanced hardware support (LP: #1836857) - s390: report new CPU capabilities - s390: add alignment hints to vector load and store * System does not auto detect disconnection of external monitor (LP: #1835001) - drm/i915: Add support for retrying hotplug - drm/i915: Enable hotplug retry * [18.04 FEAT] Enhanced CPU-MF hardware counters - kernel part (LP: #1836860) - s390/cpum_cf: Add support for CPU-MF SVN 6 - s390/cpumf: Add extended counter set definitions for model 8561 and 8562 * EeePC 1005px laptop backlight is off after system boot up (LP: #1837117) - platform/x86: asus-wmi: Only Tell EC the OS will handle display hotkeys from asus_nb_wmi * br_netfilter: namespace sysctl operations (LP: #1836910) - netfilter: bridge: port sysctls to use brnf_net - netfilter: bridge: namespace bridge netfilter sysctls - netfilter: bridge: prevent UAF in brnf_exit_net() * ideapad_laptop disables WiFi/BT radios on Lenovo Y540 (LP: #1837136) - platform/x86: ideapad-laptop: Remove no_hw_rfkill_list * shiftfs: allow overlayfs (LP: #1838677) - SAUCE: shiftfs: enable overlayfs on shiftfs * bcache: bch_allocator_thread(): hung task timeout (LP: #1784665) - bcache: never writeback a discard operation - bcache: improve bcache_reboot() - SAUCE: bcache: fix deadlock in bcache_allocator * Regressions in CMA allocation rework (LP: #1839395) - dma-contiguous: do not overwrite align in dma_alloc_contiguous() - dma-contiguous: page-align the size in dma_free_contiguous() * CVE-2019-3900 - vhost: introduce vhost_exceeds_weight() - vhost_net: fix possible infinite loop - vhost: vsock: add weight support - vhost: scsi: add weight support * Disco update: 5.0.21 upstream stable release (LP: #1837518) - bonding/802.3ad: fix slave link initialization transition states - cxgb4: offload VLAN flows regardless of VLAN ethtype - inet: switch IP ID generator to siphash - ipv4/igmp: fix another memory leak in igmpv3_del_delrec() - ipv4/igmp: fix build error if !CONFIG_IP_MULTICAST - ipv6: Consider sk_bound_dev_if when binding a raw socket to an address - ipv6: Fix redirect with VRF - llc: fix skb leak in llc_build_and_send_ui_pkt() - mlxsw: spectrum_acl: Avoid warning after identical rules insertion - net: dsa: mv88e6xxx: fix handling of upper half of STATS_TYPE_PORT - net: fec: fix the clk mismatch in failed_reset path - net-gro: fix use-after-free read in napi_gro_frags() - net: mvneta: Fix err code path of probe - net: mvpp2: fix bad MVPP2_TXQ_SCHED_TOKEN_CNTR_REG queue value - net: phy: marvell10g: report if the PHY fails to boot firmware - net: sched: don't use tc_action->order during action dump - net: stmmac: fix reset gpio free missing - r8169: fix MAC address being lost in PCI D3 - usbnet: fix kernel crash after disconnect - net/mlx5: Avoid double free in fs init error unwinding path - tipc: Avoid copying bytes beyond the supplied data - net/mlx5: Allocate root ns memory using kzalloc to match kfree - net/mlx5e: Disable rxhash when CQE compress is enabled - net: stmmac: fix ethtool flow control not able to get/set - net: stmmac: dma channel control register need to be init first - bnxt_en: Fix aggregation buffer leak under OOM condition. - bnxt_en: Fix possible BUG() condition when calling pci_disable_msix(). - bnxt_en: Reduce memory usage when running in kdump kernel. - net/tls: fix state removal with feature flags off - net/tls: don't ignore netdev notifications if no TLS features - cxgb4: Revert "cxgb4: Remove SGE_HOST_PAGE_SIZE dependency on page size" - net: correct zerocopy refcnt with udp MSG_MORE - crypto: vmx - ghash: do nosimd fallback manually - xen/pciback: Don't disable PCI_COMMAND on PCI device reset. - Revert "tipc: fix modprobe tipc failed after switch order of device registration" -
[Kernel-packages] [Bug 1840750] Re: [Potential Regression] System crashes when running ftrace test in ubuntu_kernel_selftests
ubuntu_kernel_selftests.ftrace completed successfully with kernel 5.0.0-27.28. https://objectstorage.prodstack4-5.canonical.com/v1/AUTH_77e2ada1e7a84929a74ba3b87153c0ac /autopkgtest-disco/disco/amd64/l/linux/20190821_124751_453e6@/log.gz ** Tags removed: verification-needed-disco ** Tags added: verification-done-disco -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1840750 Title: [Potential Regression] System crashes when running ftrace test in ubuntu_kernel_selftests Status in ubuntu-kernel-tests: New Status in linux package in Ubuntu: Invalid Status in linux source package in Disco: Fix Committed Bug description: [Impact] ftrace test in ubuntu_kernel_selftests causes a system crash + reboot when testing "Register/unregister many kprobe events". [Fix] The issue has been discussed in the following LKML thread: https://lkml.org/lkml/2019/6/5/274 and the following 3 upstream commits have been identified to resolve this issue: d2a68c4effd8 x86/ftrace: Do not call function graph from dynamic trampolines 3c0dab44e227 x86/ftrace: Set trampoline pages as executable 7298e24f9042 x86/kprobes: Set instruction page as executable From these commits, the Disco kernel currently in -proposed (5.0.0-26.27) is missing only the following commit, which has been already committed as part of LP: #1839887 (Disco update: upstream stable patchset 2019-08-12) but not yet released: 7298e24f9042 x86/kprobes: Set instruction page as executable [Regression potential] The commit touches the x86/kprobes code so there's a chance of regression there which I would flag as medium. However, it has been applied upstream for v5.2-rc1 and there is no follow-up commits marked as fix for it. -- This issue is 100% reproducible. It looks like this has something to do with the Disco kernel in proposed (5.0.0-1014.14). Test combinations: kernel in updates + source code master branch = OK kernel in proposed + source code master-next branch = NOT OK kernel in proposed + source code master branch = NOT OK The system will crash and reboot itself when testing: "Register/unregister many kprobe events" [33] Kprobe event with comm arguments [PASS] [34] Kprobe event string type argument[PASS] [35] Kprobe event symbol argument [PASS] [36] Kprobe event argument syntax [PASS] [37] Kprobes event arguments with types [PASS] [38] Kprobe event auto/manual naming [PASS] [39] Kprobe dynamic event with function tracer[PASS] [40] Kretprobe dynamic event with arguments [PASS] [41] Kretprobe dynamic event with maxactive [PASS] [42] Register/unregister many kprobe events packet_write_wait: Connection to 35.233.208.253 port 22: Broken pipe Tried with use "tail -f /var/log/syslog" and "dmesg -w" to see what happened, but it will just disconnected and reboot itself. ProblemType: Bug DistroRelease: Ubuntu 19.04 Package: linux-image-5.0.0-1014-gcp 5.0.0-1014.14 ProcVersionSignature: Ubuntu 5.0.0-1014.14-gcp 5.0.21 Uname: Linux 5.0.0-1014-gcp x86_64 ApportVersion: 2.20.10-0ubuntu27.1 Architecture: amd64 Date: Tue Aug 20 08:13:13 2019 SourcePackage: linux-signed-gcp UpgradeStatus: No upgrade log present (probably fresh install) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu-kernel-tests/+bug/1840750/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
[Kernel-packages] [Bug 1840750] Re: [Potential Regression] System crashes when running ftrace test in ubuntu_kernel_selftests
This bug is awaiting verification that the kernel in -proposed solves the problem. Please test the kernel and update this bug with the results. If the problem is solved, change the tag 'verification-needed- disco' to 'verification-done-disco'. If the problem still exists, change the tag 'verification-needed-disco' to 'verification-failed-disco'. If verification is not done by 5 working days from today, this fix will be dropped from the source code, and this bug will be closed. See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to enable and use -proposed. Thank you! ** Tags added: verification-needed-disco -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1840750 Title: [Potential Regression] System crashes when running ftrace test in ubuntu_kernel_selftests Status in ubuntu-kernel-tests: New Status in linux package in Ubuntu: Invalid Status in linux source package in Disco: Fix Committed Bug description: [Impact] ftrace test in ubuntu_kernel_selftests causes a system crash + reboot when testing "Register/unregister many kprobe events". [Fix] The issue has been discussed in the following LKML thread: https://lkml.org/lkml/2019/6/5/274 and the following 3 upstream commits have been identified to resolve this issue: d2a68c4effd8 x86/ftrace: Do not call function graph from dynamic trampolines 3c0dab44e227 x86/ftrace: Set trampoline pages as executable 7298e24f9042 x86/kprobes: Set instruction page as executable From these commits, the Disco kernel currently in -proposed (5.0.0-26.27) is missing only the following commit, which has been already committed as part of LP: #1839887 (Disco update: upstream stable patchset 2019-08-12) but not yet released: 7298e24f9042 x86/kprobes: Set instruction page as executable [Regression potential] The commit touches the x86/kprobes code so there's a chance of regression there which I would flag as medium. However, it has been applied upstream for v5.2-rc1 and there is no follow-up commits marked as fix for it. -- This issue is 100% reproducible. It looks like this has something to do with the Disco kernel in proposed (5.0.0-1014.14). Test combinations: kernel in updates + source code master branch = OK kernel in proposed + source code master-next branch = NOT OK kernel in proposed + source code master branch = NOT OK The system will crash and reboot itself when testing: "Register/unregister many kprobe events" [33] Kprobe event with comm arguments [PASS] [34] Kprobe event string type argument[PASS] [35] Kprobe event symbol argument [PASS] [36] Kprobe event argument syntax [PASS] [37] Kprobes event arguments with types [PASS] [38] Kprobe event auto/manual naming [PASS] [39] Kprobe dynamic event with function tracer[PASS] [40] Kretprobe dynamic event with arguments [PASS] [41] Kretprobe dynamic event with maxactive [PASS] [42] Register/unregister many kprobe events packet_write_wait: Connection to 35.233.208.253 port 22: Broken pipe Tried with use "tail -f /var/log/syslog" and "dmesg -w" to see what happened, but it will just disconnected and reboot itself. ProblemType: Bug DistroRelease: Ubuntu 19.04 Package: linux-image-5.0.0-1014-gcp 5.0.0-1014.14 ProcVersionSignature: Ubuntu 5.0.0-1014.14-gcp 5.0.21 Uname: Linux 5.0.0-1014-gcp x86_64 ApportVersion: 2.20.10-0ubuntu27.1 Architecture: amd64 Date: Tue Aug 20 08:13:13 2019 SourcePackage: linux-signed-gcp UpgradeStatus: No upgrade log present (probably fresh install) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu-kernel-tests/+bug/1840750/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
[Kernel-packages] [Bug 1840750] Re: [Potential Regression] System crashes when running ftrace test in ubuntu_kernel_selftests
** Changed in: linux (Ubuntu Disco) Status: In Progress => Fix Committed -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1840750 Title: [Potential Regression] System crashes when running ftrace test in ubuntu_kernel_selftests Status in ubuntu-kernel-tests: New Status in linux package in Ubuntu: Invalid Status in linux source package in Disco: Fix Committed Bug description: [Impact] ftrace test in ubuntu_kernel_selftests causes a system crash + reboot when testing "Register/unregister many kprobe events". [Fix] The issue has been discussed in the following LKML thread: https://lkml.org/lkml/2019/6/5/274 and the following 3 upstream commits have been identified to resolve this issue: d2a68c4effd8 x86/ftrace: Do not call function graph from dynamic trampolines 3c0dab44e227 x86/ftrace: Set trampoline pages as executable 7298e24f9042 x86/kprobes: Set instruction page as executable From these commits, the Disco kernel currently in -proposed (5.0.0-26.27) is missing only the following commit, which has been already committed as part of LP: #1839887 (Disco update: upstream stable patchset 2019-08-12) but not yet released: 7298e24f9042 x86/kprobes: Set instruction page as executable [Regression potential] The commit touches the x86/kprobes code so there's a chance of regression there which I would flag as medium. However, it has been applied upstream for v5.2-rc1 and there is no follow-up commits marked as fix for it. -- This issue is 100% reproducible. It looks like this has something to do with the Disco kernel in proposed (5.0.0-1014.14). Test combinations: kernel in updates + source code master branch = OK kernel in proposed + source code master-next branch = NOT OK kernel in proposed + source code master branch = NOT OK The system will crash and reboot itself when testing: "Register/unregister many kprobe events" [33] Kprobe event with comm arguments [PASS] [34] Kprobe event string type argument[PASS] [35] Kprobe event symbol argument [PASS] [36] Kprobe event argument syntax [PASS] [37] Kprobes event arguments with types [PASS] [38] Kprobe event auto/manual naming [PASS] [39] Kprobe dynamic event with function tracer[PASS] [40] Kretprobe dynamic event with arguments [PASS] [41] Kretprobe dynamic event with maxactive [PASS] [42] Register/unregister many kprobe events packet_write_wait: Connection to 35.233.208.253 port 22: Broken pipe Tried with use "tail -f /var/log/syslog" and "dmesg -w" to see what happened, but it will just disconnected and reboot itself. ProblemType: Bug DistroRelease: Ubuntu 19.04 Package: linux-image-5.0.0-1014-gcp 5.0.0-1014.14 ProcVersionSignature: Ubuntu 5.0.0-1014.14-gcp 5.0.21 Uname: Linux 5.0.0-1014-gcp x86_64 ApportVersion: 2.20.10-0ubuntu27.1 Architecture: amd64 Date: Tue Aug 20 08:13:13 2019 SourcePackage: linux-signed-gcp UpgradeStatus: No upgrade log present (probably fresh install) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu-kernel-tests/+bug/1840750/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
[Kernel-packages] [Bug 1840750] Re: [Potential Regression] System crashes when running ftrace test in ubuntu_kernel_selftests
Eoan already has the fixing commit, so the development series shouldn't be affected. ** Changed in: linux (Ubuntu) Status: Confirmed => Invalid -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1840750 Title: [Potential Regression] System crashes when running ftrace test in ubuntu_kernel_selftests Status in ubuntu-kernel-tests: New Status in linux package in Ubuntu: Invalid Status in linux source package in Disco: In Progress Bug description: [Impact] ftrace test in ubuntu_kernel_selftests causes a system crash + reboot when testing "Register/unregister many kprobe events". [Fix] The issue has been discussed in the following LKML thread: https://lkml.org/lkml/2019/6/5/274 and the following 3 upstream commits have been identified to resolve this issue: d2a68c4effd8 x86/ftrace: Do not call function graph from dynamic trampolines 3c0dab44e227 x86/ftrace: Set trampoline pages as executable 7298e24f9042 x86/kprobes: Set instruction page as executable From these commits, the Disco kernel currently in -proposed (5.0.0-26.27) is missing only the following commit, which has been already committed as part of LP: #1839887 (Disco update: upstream stable patchset 2019-08-12) but not yet released: 7298e24f9042 x86/kprobes: Set instruction page as executable [Regression potential] The commit touches the x86/kprobes code so there's a chance of regression there which I would flag as medium. However, it has been applied upstream for v5.2-rc1 and there is no follow-up commits marked as fix for it. -- This issue is 100% reproducible. It looks like this has something to do with the Disco kernel in proposed (5.0.0-1014.14). Test combinations: kernel in updates + source code master branch = OK kernel in proposed + source code master-next branch = NOT OK kernel in proposed + source code master branch = NOT OK The system will crash and reboot itself when testing: "Register/unregister many kprobe events" [33] Kprobe event with comm arguments [PASS] [34] Kprobe event string type argument[PASS] [35] Kprobe event symbol argument [PASS] [36] Kprobe event argument syntax [PASS] [37] Kprobes event arguments with types [PASS] [38] Kprobe event auto/manual naming [PASS] [39] Kprobe dynamic event with function tracer[PASS] [40] Kretprobe dynamic event with arguments [PASS] [41] Kretprobe dynamic event with maxactive [PASS] [42] Register/unregister many kprobe events packet_write_wait: Connection to 35.233.208.253 port 22: Broken pipe Tried with use "tail -f /var/log/syslog" and "dmesg -w" to see what happened, but it will just disconnected and reboot itself. ProblemType: Bug DistroRelease: Ubuntu 19.04 Package: linux-image-5.0.0-1014-gcp 5.0.0-1014.14 ProcVersionSignature: Ubuntu 5.0.0-1014.14-gcp 5.0.21 Uname: Linux 5.0.0-1014-gcp x86_64 ApportVersion: 2.20.10-0ubuntu27.1 Architecture: amd64 Date: Tue Aug 20 08:13:13 2019 SourcePackage: linux-signed-gcp UpgradeStatus: No upgrade log present (probably fresh install) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu-kernel-tests/+bug/1840750/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
[Kernel-packages] [Bug 1840750] Re: [Potential Regression] System crashes when running ftrace test in ubuntu_kernel_selftests
** Description changed: - This issue is 100% reproducible. It looks like this has something to do - with the Disco kernel in proposed (5.0.0-1014.14). + [Impact] + ftrace test in ubuntu_kernel_selftests causes a system crash + reboot when testing "Register/unregister many kprobe events". + + [Fix] + The issue has been discussed in the following LKML thread: + https://lkml.org/lkml/2019/6/5/274 + + and the following 3 upstream commits have been identified to resolve + this issue: + + d2a68c4effd8 x86/ftrace: Do not call function graph from dynamic trampolines + 3c0dab44e227 x86/ftrace: Set trampoline pages as executable + 7298e24f9042 x86/kprobes: Set instruction page as executable + + From these commits, the Disco kernel currently in -proposed + (5.0.0-26.27) is missing only the following commit, which has been + already committed as part of LP: #1839887 (Disco update: upstream stable + patchset 2019-08-12) but not yet released: + + 7298e24f9042 x86/kprobes: Set instruction page as executable + + [Regression potential] + The commit touches the x86/kprobes code so there's a chance of regression there which I would flag as medium. However, it has been applied upstream for v5.2-rc1 and there is no follow-up commits marked as fix for it. + + -- + This issue is 100% reproducible. It looks like this has something to do with the Disco kernel in proposed (5.0.0-1014.14). Test combinations: kernel in updates + source code master branch = OK kernel in proposed + source code master-next branch = NOT OK kernel in proposed + source code master branch = NOT OK The system will crash and reboot itself when testing: "Register/unregister many kprobe events" [33] Kprobe event with comm arguments [PASS] [34] Kprobe event string type argument[PASS] [35] Kprobe event symbol argument [PASS] [36] Kprobe event argument syntax [PASS] [37] Kprobes event arguments with types [PASS] [38] Kprobe event auto/manual naming [PASS] [39] Kprobe dynamic event with function tracer[PASS] [40] Kretprobe dynamic event with arguments [PASS] [41] Kretprobe dynamic event with maxactive [PASS] [42] Register/unregister many kprobe events packet_write_wait: Connection to 35.233.208.253 port 22: Broken pipe Tried with use "tail -f /var/log/syslog" and "dmesg -w" to see what happened, but it will just disconnected and reboot itself. - ProblemType: Bug DistroRelease: Ubuntu 19.04 Package: linux-image-5.0.0-1014-gcp 5.0.0-1014.14 ProcVersionSignature: Ubuntu 5.0.0-1014.14-gcp 5.0.21 Uname: Linux 5.0.0-1014-gcp x86_64 ApportVersion: 2.20.10-0ubuntu27.1 Architecture: amd64 Date: Tue Aug 20 08:13:13 2019 SourcePackage: linux-signed-gcp UpgradeStatus: No upgrade log present (probably fresh install) ** Changed in: linux (Ubuntu Disco) Status: Confirmed => In Progress -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1840750 Title: [Potential Regression] System crashes when running ftrace test in ubuntu_kernel_selftests Status in ubuntu-kernel-tests: New Status in linux package in Ubuntu: Confirmed Status in linux source package in Disco: In Progress Bug description: [Impact] ftrace test in ubuntu_kernel_selftests causes a system crash + reboot when testing "Register/unregister many kprobe events". [Fix] The issue has been discussed in the following LKML thread: https://lkml.org/lkml/2019/6/5/274 and the following 3 upstream commits have been identified to resolve this issue: d2a68c4effd8 x86/ftrace: Do not call function graph from dynamic trampolines 3c0dab44e227 x86/ftrace: Set trampoline pages as executable 7298e24f9042 x86/kprobes: Set instruction page as executable From these commits, the Disco kernel currently in -proposed (5.0.0-26.27) is missing only the following commit, which has been already committed as part of LP: #1839887 (Disco update: upstream stable patchset 2019-08-12) but not yet released: 7298e24f9042 x86/kprobes: Set instruction page as executable [Regression potential] The commit touches the x86/kprobes code so there's a chance of regression there which I would flag as medium. However, it has been applied upstream for v5.2-rc1 and there is no follow-up commits marked as fix for it. -- This issue is 100% reproducible. It looks like this has something to do with the Disco kernel in proposed (5.0.0-1014.14). Test combinations: kernel in updates + source code master branch = OK kernel in proposed + source code master-next branch = NOT OK kernel in proposed + source code master branch = NOT OK The system will crash and reboot itself when testing: "Register/unregister many kprobe events" [33] Kprobe event with comm arguments [PASS] [34] Kprobe
[Kernel-packages] [Bug 1840750] Re: [Potential Regression] System crashes when running ftrace test in ubuntu_kernel_selftests
Running tests with the mainline builds the conclusion is that the bug was introduced with stable v5.0.20. From the thread on comment #4, we are missing the following fix: 7298e24f9042 x86/kprobes: Set instruction page as executable I'm building a test kernel to verify it. -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1840750 Title: [Potential Regression] System crashes when running ftrace test in ubuntu_kernel_selftests Status in ubuntu-kernel-tests: New Status in linux package in Ubuntu: Confirmed Status in linux source package in Disco: Confirmed Bug description: This issue is 100% reproducible. It looks like this has something to do with the Disco kernel in proposed (5.0.0-1014.14). Test combinations: kernel in updates + source code master branch = OK kernel in proposed + source code master-next branch = NOT OK kernel in proposed + source code master branch = NOT OK The system will crash and reboot itself when testing: "Register/unregister many kprobe events" [33] Kprobe event with comm arguments [PASS] [34] Kprobe event string type argument[PASS] [35] Kprobe event symbol argument [PASS] [36] Kprobe event argument syntax [PASS] [37] Kprobes event arguments with types [PASS] [38] Kprobe event auto/manual naming [PASS] [39] Kprobe dynamic event with function tracer[PASS] [40] Kretprobe dynamic event with arguments [PASS] [41] Kretprobe dynamic event with maxactive [PASS] [42] Register/unregister many kprobe events packet_write_wait: Connection to 35.233.208.253 port 22: Broken pipe Tried with use "tail -f /var/log/syslog" and "dmesg -w" to see what happened, but it will just disconnected and reboot itself. ProblemType: Bug DistroRelease: Ubuntu 19.04 Package: linux-image-5.0.0-1014-gcp 5.0.0-1014.14 ProcVersionSignature: Ubuntu 5.0.0-1014.14-gcp 5.0.21 Uname: Linux 5.0.0-1014-gcp x86_64 ApportVersion: 2.20.10-0ubuntu27.1 Architecture: amd64 Date: Tue Aug 20 08:13:13 2019 SourcePackage: linux-signed-gcp UpgradeStatus: No upgrade log present (probably fresh install) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu-kernel-tests/+bug/1840750/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
[Kernel-packages] [Bug 1840750] Re: [Potential Regression] System crashes when running ftrace test in ubuntu_kernel_selftests
Upstream discussion https://lkml.org/lkml/2019/6/9/781 -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1840750 Title: [Potential Regression] System crashes when running ftrace test in ubuntu_kernel_selftests Status in ubuntu-kernel-tests: New Status in linux package in Ubuntu: Confirmed Status in linux source package in Disco: Confirmed Bug description: This issue is 100% reproducible. It looks like this has something to do with the Disco kernel in proposed (5.0.0-1014.14). Test combinations: kernel in updates + source code master branch = OK kernel in proposed + source code master-next branch = NOT OK kernel in proposed + source code master branch = NOT OK The system will crash and reboot itself when testing: "Register/unregister many kprobe events" [33] Kprobe event with comm arguments [PASS] [34] Kprobe event string type argument[PASS] [35] Kprobe event symbol argument [PASS] [36] Kprobe event argument syntax [PASS] [37] Kprobes event arguments with types [PASS] [38] Kprobe event auto/manual naming [PASS] [39] Kprobe dynamic event with function tracer[PASS] [40] Kretprobe dynamic event with arguments [PASS] [41] Kretprobe dynamic event with maxactive [PASS] [42] Register/unregister many kprobe events packet_write_wait: Connection to 35.233.208.253 port 22: Broken pipe Tried with use "tail -f /var/log/syslog" and "dmesg -w" to see what happened, but it will just disconnected and reboot itself. ProblemType: Bug DistroRelease: Ubuntu 19.04 Package: linux-image-5.0.0-1014-gcp 5.0.0-1014.14 ProcVersionSignature: Ubuntu 5.0.0-1014.14-gcp 5.0.21 Uname: Linux 5.0.0-1014-gcp x86_64 ApportVersion: 2.20.10-0ubuntu27.1 Architecture: amd64 Date: Tue Aug 20 08:13:13 2019 SourcePackage: linux-signed-gcp UpgradeStatus: No upgrade log present (probably fresh install) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu-kernel-tests/+bug/1840750/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
[Kernel-packages] [Bug 1840750] Re: [Potential Regression] System crashes when running ftrace test in ubuntu_kernel_selftests
I was able to get some kernel messages from a qemu console: [ 208.672687] kernel tried to execute NX-protected page - exploit attempt? (uid: 0) [ 208.673786] BUG: unable to handle kernel paging request at c054f694 [ 208.674779] #PF error: [PROT] [INSTR] [ 208.675571] PGD 45a12067 P4D 45a12067 PUD 45a14067 PMD 79808067 PTE 8000722f8061 [ 208.679132] Oops: 0011 [#1] SMP PTI [ 208.680526] CPU: 0 PID: 3836 Comm: ftracetest Not tainted 5.0.0-26-generic #27-Ubuntu [ 208.683102] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.10.2-1ubuntu1 04/01/2014 [ 208.686150] kernel tried to execute NX-protected page - exploit attempt? (uid: 0) [ 208.686150] BUG: unable to handle kernel paging request at c054feae [ 208.686151] #PF error: [PROT] [INSTR] [ 208.686151] PGD 45a12067 P4D 45a12067 PUD 45a14067 PMD 79808067 PTE 8000722f8061 [ 208.686152] Oops: 0011 [#2] SMP PTI [ 208.686153] CPU: 0 PID: 3836 Comm: ftracetest Not tainted 5.0.0-26-generic #27-Ubuntu [ 208.686153] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.10.2-1ubuntu1 04/01/2014 [ 208.686154] kernel tried to execute NX-protected page - exploit attempt? (uid: 0) [ 208.686154] BUG: unable to handle kernel paging request at c054feae [ 208.686154] #PF error: [PROT] [INSTR] [ 208.686154] PGD 45a12067 P4D 45a12067 PUD 45a14067 PMD 79808067 PTE 8000722f8061 [ 208.686156] Oops: 0011 [#3] SMP PTI [ 208.686156] CPU: 0 PID: 3836 Comm: ftracetest Not tainted 5.0.0-26-generic #27-Ubuntu [ 208.686156] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.10.2-1ubuntu1 04/01/2014 [ 208.686157] kernel tried to execute NX-protected page - exploit attempt? (uid: 0) [ 208.686168] BUG: unable to handle kernel paging request at c054feae [ 208.686169] #PF error: [PROT] [INSTR] [ 208.686169] PGD 45a12067 P4D 45a12067 PUD 45a14067 PMD 79808067 PTE 8000722f8061 [ 208.686170] Oops: 0011 [#4] SMP PTI [ 208.686170] CPU: 0 PID: 3836 Comm: ftracetest Not tainted 5.0.0-26-generic #27-Ubuntu [ 208.686170] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.10.2-1ubuntu1 04/01/2014 [ 208.686171] kernel tried to execute NX-protected page - exploit attempt? (uid: 0) [ 208.686171] BUG: unable to handle kernel paging request at c054feae [ 208.686171] #PF error: [PROT] [INSTR] [ 208.686171] PGD 45a12067 P4D 45a12067 PUD 45a14067 PMD 79808067 PTE 8000722f8061 [ 208.686172] Oops: 0011 [#5] SMP PTI [ 208.686173] CPU: 0 PID: 3836 Comm: ftracetest Not tainted 5.0.0-26-generic #27-Ubuntu [ 208.686173] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.10.2-1ubuntu1 04/01/2014 [ 208.686174] kernel tried to execute NX-protected page - exploit attempt? (uid: 0) [ 208.686174] BUG: unable to handle kernel paging request at c054feae [ 208.686174] #PF error: [PROT] [INSTR] [ 208.686174] PGD 45a12067 P4D 45a12067 PUD 45a14067 PMD 79808067 PTE 8000722f8061 [ 208.686176] Oops: 0011 [#6] SMP PTI [ 208.686176] CPU: 0 PID: 3836 Comm: ftracetest Not tainted 5.0.0-26-generic #27-Ubuntu [ 208.686176] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.10.2-1ubuntu1 04/01/2014 [ 208.686177] kernel tried to execute NX-protected page - exploit attempt? (uid: 0) [ 208.686177] BUG: unable to handle kernel paging request at c054feae [ 208.686177] #PF error: [PROT] [INSTR] [ 208.686177] PGD 45a12067 P4D 45a12067 PUD 45a14067 PMD 79808067 PTE 8000722f8061 [ 208.686178] Oops: 0011 [#7] SMP PTI [ 208.686179] CPU: 0 PID: 3836 Comm: ftracetest Not tainted 5.0.0-26-generic #27-Ubuntu [ 208.686179] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.10.2-1ubuntu1 04/01/2014 [ 208.686179] kernel tried to execute NX-protected page - exploit attempt? (uid: 0) [ 208.686180] BUG: unable to handle kernel paging request at c054feae [ 208.686180] #PF error: [PROT] [INSTR] [ 208.686180] PGD 45a12067 P4D 45a12067 PUD 45a14067 PMD 79808067 PTE 8000722f8061 [ 208.686181] Oops: 0011 [#8] SMP PTI [ 208.686182] CPU: 0 PID: 3836 Comm: ftracetest Not tainted 5.0.0-26-generic #27-Ubuntu [ 208.686182] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.10.2-1ubuntu1 04/01/2014 [ 208.686182] kernel tried to execute NX-protected page - exploit attempt? (uid: 0) [ 208.686183] BUG: unable to handle kernel paging request at c054feae [ 208.686183] #PF error: [PROT] [INSTR] [ 208.686183] PGD 45a12067 P4D 45a12067 PUD 45a14067 PMD 79808067 PTE 8000722f8061 [ 208.686184] Oops: 0011 [#9] SMP PTI [ 208.686184] CPU: 0 PID: 3836 Comm: ftracetest Not tainted 5.0.0-26-generic #27-Ubuntu [ 208.686185] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.10.2-1ubuntu1 04/01/2014 [ 208.686185] BUG: stack guard page was hit at 2ef8e073 (stack is dd001bee..b92ae6d7) [ 208.686185] kernel stack overflow (double-fault): [#10] SMP PTI [
[Kernel-packages] [Bug 1840750] Re: [Potential Regression] System crashes when running ftrace test in ubuntu_kernel_selftests
** Tags added: sru-20190812 ubuntu-kernel-selftests -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1840750 Title: [Potential Regression] System crashes when running ftrace test in ubuntu_kernel_selftests Status in ubuntu-kernel-tests: New Status in linux package in Ubuntu: Confirmed Status in linux source package in Disco: Confirmed Bug description: This issue is 100% reproducible. It looks like this has something to do with the Disco kernel in proposed (5.0.0-1014.14). Test combinations: kernel in updates + source code master branch = OK kernel in proposed + source code master-next branch = NOT OK kernel in proposed + source code master branch = NOT OK The system will crash and reboot itself when testing: "Register/unregister many kprobe events" [33] Kprobe event with comm arguments [PASS] [34] Kprobe event string type argument[PASS] [35] Kprobe event symbol argument [PASS] [36] Kprobe event argument syntax [PASS] [37] Kprobes event arguments with types [PASS] [38] Kprobe event auto/manual naming [PASS] [39] Kprobe dynamic event with function tracer[PASS] [40] Kretprobe dynamic event with arguments [PASS] [41] Kretprobe dynamic event with maxactive [PASS] [42] Register/unregister many kprobe events packet_write_wait: Connection to 35.233.208.253 port 22: Broken pipe Tried with use "tail -f /var/log/syslog" and "dmesg -w" to see what happened, but it will just disconnected and reboot itself. ProblemType: Bug DistroRelease: Ubuntu 19.04 Package: linux-image-5.0.0-1014-gcp 5.0.0-1014.14 ProcVersionSignature: Ubuntu 5.0.0-1014.14-gcp 5.0.21 Uname: Linux 5.0.0-1014-gcp x86_64 ApportVersion: 2.20.10-0ubuntu27.1 Architecture: amd64 Date: Tue Aug 20 08:13:13 2019 SourcePackage: linux-signed-gcp UpgradeStatus: No upgrade log present (probably fresh install) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu-kernel-tests/+bug/1840750/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
[Kernel-packages] [Bug 1840750] Re: [Potential Regression] System crashes when running ftrace test in ubuntu_kernel_selftests
** Also affects: ubuntu-kernel-tests Importance: Undecided Status: New -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1840750 Title: [Potential Regression] System crashes when running ftrace test in ubuntu_kernel_selftests Status in ubuntu-kernel-tests: New Status in linux package in Ubuntu: Incomplete Status in linux source package in Disco: Incomplete Bug description: This issue is 100% reproducible. It looks like this has something to do with the Disco kernel in proposed (5.0.0-1014.14). Test combinations: kernel in updates + source code master branch = OK kernel in proposed + source code master-next branch = NOT OK kernel in proposed + source code master branch = NOT OK The system will crash and reboot itself when testing: "Register/unregister many kprobe events" [33] Kprobe event with comm arguments [PASS] [34] Kprobe event string type argument[PASS] [35] Kprobe event symbol argument [PASS] [36] Kprobe event argument syntax [PASS] [37] Kprobes event arguments with types [PASS] [38] Kprobe event auto/manual naming [PASS] [39] Kprobe dynamic event with function tracer[PASS] [40] Kretprobe dynamic event with arguments [PASS] [41] Kretprobe dynamic event with maxactive [PASS] [42] Register/unregister many kprobe events packet_write_wait: Connection to 35.233.208.253 port 22: Broken pipe Tried with use "tail -f /var/log/syslog" and "dmesg -w" to see what happened, but it will just disconnected and reboot itself. ProblemType: Bug DistroRelease: Ubuntu 19.04 Package: linux-image-5.0.0-1014-gcp 5.0.0-1014.14 ProcVersionSignature: Ubuntu 5.0.0-1014.14-gcp 5.0.21 Uname: Linux 5.0.0-1014-gcp x86_64 ApportVersion: 2.20.10-0ubuntu27.1 Architecture: amd64 Date: Tue Aug 20 08:13:13 2019 SourcePackage: linux-signed-gcp UpgradeStatus: No upgrade log present (probably fresh install) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu-kernel-tests/+bug/1840750/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
[Kernel-packages] [Bug 1840750] Re: [Potential Regression] System crashes when running ftrace test in ubuntu_kernel_selftests
** Description changed: This issue is 100% reproducible. It looks like this has something to do - with the kernel in proposed + with the Disco kernel in proposed (5.0.0-1014.14). - Combinations: + Test combinations: kernel in updates + source code master branch = OK kernel in proposed + source code master-next branch = NOT OK kernel in proposed + source code master branch = NOT OK - + The system will crash and reboot itself when testing: "Register/unregister many kprobe events" [33] Kprobe event with comm arguments [PASS] [34] Kprobe event string type argument[PASS] [35] Kprobe event symbol argument [PASS] [36] Kprobe event argument syntax [PASS] [37] Kprobes event arguments with types [PASS] [38] Kprobe event auto/manual naming [PASS] [39] Kprobe dynamic event with function tracer[PASS] [40] Kretprobe dynamic event with arguments [PASS] [41] Kretprobe dynamic event with maxactive [PASS] [42] Register/unregister many kprobe events packet_write_wait: Connection to 35.233.208.253 port 22: Broken pipe ProblemType: Bug DistroRelease: Ubuntu 19.04 Package: linux-image-5.0.0-1014-gcp 5.0.0-1014.14 ProcVersionSignature: Ubuntu 5.0.0-1014.14-gcp 5.0.21 Uname: Linux 5.0.0-1014-gcp x86_64 ApportVersion: 2.20.10-0ubuntu27.1 Architecture: amd64 Date: Tue Aug 20 08:13:13 2019 SourcePackage: linux-signed-gcp UpgradeStatus: No upgrade log present (probably fresh install) ** Also affects: linux (Ubuntu Disco) Importance: Undecided Status: New ** Description changed: This issue is 100% reproducible. It looks like this has something to do with the Disco kernel in proposed (5.0.0-1014.14). Test combinations: kernel in updates + source code master branch = OK kernel in proposed + source code master-next branch = NOT OK kernel in proposed + source code master branch = NOT OK The system will crash and reboot itself when testing: "Register/unregister many kprobe events" [33] Kprobe event with comm arguments [PASS] [34] Kprobe event string type argument[PASS] [35] Kprobe event symbol argument [PASS] [36] Kprobe event argument syntax [PASS] [37] Kprobes event arguments with types [PASS] [38] Kprobe event auto/manual naming [PASS] [39] Kprobe dynamic event with function tracer[PASS] [40] Kretprobe dynamic event with arguments [PASS] [41] Kretprobe dynamic event with maxactive [PASS] [42] Register/unregister many kprobe events packet_write_wait: Connection to 35.233.208.253 port 22: Broken pipe + Tried with use "tail -f /var/log/syslog" and "dmesg -w" to see what + happened, but it will just disconnected and reboot itself. + + ProblemType: Bug DistroRelease: Ubuntu 19.04 Package: linux-image-5.0.0-1014-gcp 5.0.0-1014.14 ProcVersionSignature: Ubuntu 5.0.0-1014.14-gcp 5.0.21 Uname: Linux 5.0.0-1014-gcp x86_64 ApportVersion: 2.20.10-0ubuntu27.1 Architecture: amd64 Date: Tue Aug 20 08:13:13 2019 SourcePackage: linux-signed-gcp UpgradeStatus: No upgrade log present (probably fresh install) -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1840750 Title: [Potential Regression] System crashes when running ftrace test in ubuntu_kernel_selftests Status in linux package in Ubuntu: New Status in linux source package in Disco: New Bug description: This issue is 100% reproducible. It looks like this has something to do with the Disco kernel in proposed (5.0.0-1014.14). Test combinations: kernel in updates + source code master branch = OK kernel in proposed + source code master-next branch = NOT OK kernel in proposed + source code master branch = NOT OK The system will crash and reboot itself when testing: "Register/unregister many kprobe events" [33] Kprobe event with comm arguments [PASS] [34] Kprobe event string type argument[PASS] [35] Kprobe event symbol argument [PASS] [36] Kprobe event argument syntax [PASS] [37] Kprobes event arguments with types [PASS] [38] Kprobe event auto/manual naming [PASS] [39] Kprobe dynamic event with function tracer[PASS] [40] Kretprobe dynamic event with arguments [PASS] [41] Kretprobe dynamic event with maxactive [PASS] [42] Register/unregister many kprobe events packet_write_wait: Connection to 35.233.208.253 port 22: Broken pipe Tried with use "tail -f /var/log/syslog" and "dmesg -w" to see what happened, but it will just disconnected and reboot itself. ProblemType: Bug DistroRelease: Ubuntu 19.04 Package: linux-image-5.0.0-1014-gcp 5.0.0-1014.14 ProcVersionSignature: Ubuntu 5.0.0-1014.14-gcp 5.0.21 Uname: Linux 5.0.0-1014-gcp x86_64 ApportVersion: 2.20.10-0ubuntu27.1 Architecture: amd64 Date: Tue Aug 20 08:13:13 2019 SourcePackage: linux-signed-gcp UpgradeStatus: No
