[Kernel-packages] [Bug 1626737] Re: [4.8.0-14/ppc64el regression] rmmod scsi_debug keeps causing kernel oops

2016-10-06 Thread Martin Pitt 
I didn't find a simpler reproducer on the CLI, and the systemd test now
does not call rmmod any more, so there's no handle on this any more.

** Changed in: linux (Ubuntu)
   Status: Confirmed => Invalid

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Title:
  [4.8.0-14/ppc64el regression] rmmod scsi_debug keeps causing kernel
  oops

Status in linux package in Ubuntu:
  Invalid
Status in systemd package in Ubuntu:
  Fix Released

Bug description:
  Since upgrading to 4.8.0-14, the "storage" autopkgtest of systemd is
  broken. This uses scsi_debug to get a test hard drive, which is reset
  between the test through unloading/reloading the module. This has
  worked fine so far (and still works on amd64/i386), but now regularly
  triggers a kernel oops:

  [  161.120362] Unable to handle kernel paging request for data at address 
0x
  [  161.120468] Faulting instruction address: 0xc0538ecc
  [  161.120517] Oops: Kernel access of bad area, sig: 11 [#1]
  [  161.120555] SMP NR_CPUS=2048 NUMA pSeries
  [  161.120595] Modules linked in: dm_crypt dm_mod xts algif_skcipher af_alg 
sd_mod sg xt_TCPMSS xt_tcpudp iptable_mangle ghash_generic gf128mul vmx_crypto 
virtio_balloon ip_tables x_tables autofs4 ext4 crc16 jbd2 fscrypto mbcache 
crc32c_generic btrfs xor raid6_pq ohci_pci ehci_pci ohci_hcd virtio_blk 
virtio_net ehci_hcd usbcore crc32c_vpmsum usb_common virtio_pci virtio_ring 
virtio [last unloaded: scsi_debug]
  [  161.121016] CPU: 0 PID: 5473 Comm: rmmod Not tainted 4.8.0-15-generic 
#16-Ubuntu
  [  161.121067] task: c0005ae51980 task.stack: c0005ef58000
  [  161.121110] NIP: c0538ecc LR: c0538ee0 CTR: 
c00f7250
  [  161.121162] REGS: c0005ef5b9f0 TRAP: 0300   Not tainted  
(4.8.0-15-generic)
  [  161.121213] MSR: 80010280b033   
CR: 28002444  XER: 2000
  [  161.121390] CFAR: c009a8e0 DAR:  DSISR: 4000 
SOFTE: 1 
 GPR00: c0538e98 c0005ef5bc70 c0f67b00 
 
 GPR04: d1302018 0002  
c10d7b00 
 GPR08: c0fa7b00 0063 0073 
0004 
 GPR12: 28002844 cfb8  
 
 GPR16:  0100331f11f0 384b3890 
384b3848 
 GPR20: 384b3830 384b3870 384b38a8 
384b3888 
 GPR24: 3fffd23d6e70 c0ebdec8 fffe 
d1302018 
 GPR28: c0ebdeb8   
 
  [  161.122099] NIP [c0538ecc] ddebug_remove_module+0x8c/0x160
  [  161.122143] LR [c0538ee0] ddebug_remove_module+0xa0/0x160
  [  161.122186] Call Trace:
  [  161.122205] [c0005ef5bc70] [c0538e98] 
ddebug_remove_module+0x58/0x160 (unreliable)
  [  161.122280] [c0005ef5bd10] [c018961c] free_module+0x21c/0x3c0
  [  161.122333] [c0005ef5bd60] [c0189a38] 
SyS_delete_module+0x278/0x2f0
  [  161.122394] [c0005ef5be30] [c00095e0] system_call+0x38/0x108
  [  161.122445] Instruction dump:
  [  161.122472] 3d42fff5 e92a63b8 7fa9e000 7d3d4b78 ebe9 419e00bc 7d3e4b78 
3b40fffe 
  [  161.122561] 4818 7fbfe000 7ffdfb78 7ffefb78  419e0060 
e87e0010 7f64db78 
  [  161.122651] ---[ end trace 5f19b96c7077a0e0 ]---

  This isn't reproducible by merely loading and unloading the module, it
  apparently needs to get some actual exercise. I'll find a simpler
  reproducer than running the systemd test tomorrow morning.

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[Kernel-packages] [Bug 1626737] Re: [4.8.0-14/ppc64el regression] rmmod scsi_debug keeps causing kernel oops

2016-09-30 Thread Launchpad Bug Tracker 
This bug was fixed in the package systemd - 231-9

---
systemd (231-9) unstable; urgency=medium

  * pid1: process zero-length notification messages again.
Just remove the assertion, the "n" value was not used anyway. This fixes
a local DoS due to unprocessed/unclosed fds which got introduced by the
previous fix. (Closes: #839171) (LP: #1628687)
  * pid1: Robustify manager_dispatch_notify_fd()
  * test/networkd-test.py: Add missing writeConfig() helper function.

 -- Martin Pitt   Thu, 29 Sep 2016 23:39:24
+0200

** Changed in: systemd (Ubuntu)
   Status: Fix Committed => Fix Released

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Title:
  [4.8.0-14/ppc64el regression] rmmod scsi_debug keeps causing kernel
  oops

Status in linux package in Ubuntu:
  Confirmed
Status in systemd package in Ubuntu:
  Fix Released

Bug description:
  Since upgrading to 4.8.0-14, the "storage" autopkgtest of systemd is
  broken. This uses scsi_debug to get a test hard drive, which is reset
  between the test through unloading/reloading the module. This has
  worked fine so far (and still works on amd64/i386), but now regularly
  triggers a kernel oops:

  [  161.120362] Unable to handle kernel paging request for data at address 
0x
  [  161.120468] Faulting instruction address: 0xc0538ecc
  [  161.120517] Oops: Kernel access of bad area, sig: 11 [#1]
  [  161.120555] SMP NR_CPUS=2048 NUMA pSeries
  [  161.120595] Modules linked in: dm_crypt dm_mod xts algif_skcipher af_alg 
sd_mod sg xt_TCPMSS xt_tcpudp iptable_mangle ghash_generic gf128mul vmx_crypto 
virtio_balloon ip_tables x_tables autofs4 ext4 crc16 jbd2 fscrypto mbcache 
crc32c_generic btrfs xor raid6_pq ohci_pci ehci_pci ohci_hcd virtio_blk 
virtio_net ehci_hcd usbcore crc32c_vpmsum usb_common virtio_pci virtio_ring 
virtio [last unloaded: scsi_debug]
  [  161.121016] CPU: 0 PID: 5473 Comm: rmmod Not tainted 4.8.0-15-generic 
#16-Ubuntu
  [  161.121067] task: c0005ae51980 task.stack: c0005ef58000
  [  161.121110] NIP: c0538ecc LR: c0538ee0 CTR: 
c00f7250
  [  161.121162] REGS: c0005ef5b9f0 TRAP: 0300   Not tainted  
(4.8.0-15-generic)
  [  161.121213] MSR: 80010280b033   
CR: 28002444  XER: 2000
  [  161.121390] CFAR: c009a8e0 DAR:  DSISR: 4000 
SOFTE: 1 
 GPR00: c0538e98 c0005ef5bc70 c0f67b00 
 
 GPR04: d1302018 0002  
c10d7b00 
 GPR08: c0fa7b00 0063 0073 
0004 
 GPR12: 28002844 cfb8  
 
 GPR16:  0100331f11f0 384b3890 
384b3848 
 GPR20: 384b3830 384b3870 384b38a8 
384b3888 
 GPR24: 3fffd23d6e70 c0ebdec8 fffe 
d1302018 
 GPR28: c0ebdeb8   
 
  [  161.122099] NIP [c0538ecc] ddebug_remove_module+0x8c/0x160
  [  161.122143] LR [c0538ee0] ddebug_remove_module+0xa0/0x160
  [  161.122186] Call Trace:
  [  161.122205] [c0005ef5bc70] [c0538e98] 
ddebug_remove_module+0x58/0x160 (unreliable)
  [  161.122280] [c0005ef5bd10] [c018961c] free_module+0x21c/0x3c0
  [  161.122333] [c0005ef5bd60] [c0189a38] 
SyS_delete_module+0x278/0x2f0
  [  161.122394] [c0005ef5be30] [c00095e0] system_call+0x38/0x108
  [  161.122445] Instruction dump:
  [  161.122472] 3d42fff5 e92a63b8 7fa9e000 7d3d4b78 ebe9 419e00bc 7d3e4b78 
3b40fffe 
  [  161.122561] 4818 7fbfe000 7ffdfb78 7ffefb78  419e0060 
e87e0010 7f64db78 
  [  161.122651] ---[ end trace 5f19b96c7077a0e0 ]---

  This isn't reproducible by merely loading and unloading the module, it
  apparently needs to get some actual exercise. I'll find a simpler
  reproducer than running the systemd test tomorrow morning.

To manage notifications about this bug go to:
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[Kernel-packages] [Bug 1626737] Re: [4.8.0-14/ppc64el regression] rmmod scsi_debug keeps causing kernel oops

2016-09-23 Thread Brad Figg 
** Changed in: linux (Ubuntu)
   Importance: Undecided => Medium

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Title:
  [4.8.0-14/ppc64el regression] rmmod scsi_debug keeps causing kernel
  oops

Status in linux package in Ubuntu:
  Confirmed
Status in systemd package in Ubuntu:
  Fix Committed

Bug description:
  Since upgrading to 4.8.0-14, the "storage" autopkgtest of systemd is
  broken. This uses scsi_debug to get a test hard drive, which is reset
  between the test through unloading/reloading the module. This has
  worked fine so far (and still works on amd64/i386), but now regularly
  triggers a kernel oops:

  [  161.120362] Unable to handle kernel paging request for data at address 
0x
  [  161.120468] Faulting instruction address: 0xc0538ecc
  [  161.120517] Oops: Kernel access of bad area, sig: 11 [#1]
  [  161.120555] SMP NR_CPUS=2048 NUMA pSeries
  [  161.120595] Modules linked in: dm_crypt dm_mod xts algif_skcipher af_alg 
sd_mod sg xt_TCPMSS xt_tcpudp iptable_mangle ghash_generic gf128mul vmx_crypto 
virtio_balloon ip_tables x_tables autofs4 ext4 crc16 jbd2 fscrypto mbcache 
crc32c_generic btrfs xor raid6_pq ohci_pci ehci_pci ohci_hcd virtio_blk 
virtio_net ehci_hcd usbcore crc32c_vpmsum usb_common virtio_pci virtio_ring 
virtio [last unloaded: scsi_debug]
  [  161.121016] CPU: 0 PID: 5473 Comm: rmmod Not tainted 4.8.0-15-generic 
#16-Ubuntu
  [  161.121067] task: c0005ae51980 task.stack: c0005ef58000
  [  161.121110] NIP: c0538ecc LR: c0538ee0 CTR: 
c00f7250
  [  161.121162] REGS: c0005ef5b9f0 TRAP: 0300   Not tainted  
(4.8.0-15-generic)
  [  161.121213] MSR: 80010280b033   
CR: 28002444  XER: 2000
  [  161.121390] CFAR: c009a8e0 DAR:  DSISR: 4000 
SOFTE: 1 
 GPR00: c0538e98 c0005ef5bc70 c0f67b00 
 
 GPR04: d1302018 0002  
c10d7b00 
 GPR08: c0fa7b00 0063 0073 
0004 
 GPR12: 28002844 cfb8  
 
 GPR16:  0100331f11f0 384b3890 
384b3848 
 GPR20: 384b3830 384b3870 384b38a8 
384b3888 
 GPR24: 3fffd23d6e70 c0ebdec8 fffe 
d1302018 
 GPR28: c0ebdeb8   
 
  [  161.122099] NIP [c0538ecc] ddebug_remove_module+0x8c/0x160
  [  161.122143] LR [c0538ee0] ddebug_remove_module+0xa0/0x160
  [  161.122186] Call Trace:
  [  161.122205] [c0005ef5bc70] [c0538e98] 
ddebug_remove_module+0x58/0x160 (unreliable)
  [  161.122280] [c0005ef5bd10] [c018961c] free_module+0x21c/0x3c0
  [  161.122333] [c0005ef5bd60] [c0189a38] 
SyS_delete_module+0x278/0x2f0
  [  161.122394] [c0005ef5be30] [c00095e0] system_call+0x38/0x108
  [  161.122445] Instruction dump:
  [  161.122472] 3d42fff5 e92a63b8 7fa9e000 7d3d4b78 ebe9 419e00bc 7d3e4b78 
3b40fffe 
  [  161.122561] 4818 7fbfe000 7ffdfb78 7ffefb78  419e0060 
e87e0010 7f64db78 
  [  161.122651] ---[ end trace 5f19b96c7077a0e0 ]---

  This isn't reproducible by merely loading and unloading the module, it
  apparently needs to get some actual exercise. I'll find a simpler
  reproducer than running the systemd test tomorrow morning.

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1626737/+subscriptions

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[Kernel-packages] [Bug 1626737] Re: [4.8.0-14/ppc64el regression] rmmod scsi_debug keeps causing kernel oops

2016-09-23 Thread Martin Pitt 
I adjusted the test to avoid "rmmod scsi_debug":
https://anonscm.debian.org/cgit/pkg-
systemd/systemd.git/commit/?id=be77e470d8

So there's still a bug there, but it won't block testing any more at
least. And rmmod is always a bit brittle anyway, so let's avoid it.

** Changed in: systemd (Ubuntu)
   Importance: Undecided => Medium

** Changed in: systemd (Ubuntu)
   Status: New => Fix Committed

** Changed in: systemd (Ubuntu)
 Assignee: (unassigned) => Martin Pitt (pitti)

-- 
You received this bug notification because you are a member of Kernel
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https://bugs.launchpad.net/bugs/1626737

Title:
  [4.8.0-14/ppc64el regression] rmmod scsi_debug keeps causing kernel
  oops

Status in linux package in Ubuntu:
  Confirmed
Status in systemd package in Ubuntu:
  Fix Committed

Bug description:
  Since upgrading to 4.8.0-14, the "storage" autopkgtest of systemd is
  broken. This uses scsi_debug to get a test hard drive, which is reset
  between the test through unloading/reloading the module. This has
  worked fine so far (and still works on amd64/i386), but now regularly
  triggers a kernel oops:

  [  161.120362] Unable to handle kernel paging request for data at address 
0x
  [  161.120468] Faulting instruction address: 0xc0538ecc
  [  161.120517] Oops: Kernel access of bad area, sig: 11 [#1]
  [  161.120555] SMP NR_CPUS=2048 NUMA pSeries
  [  161.120595] Modules linked in: dm_crypt dm_mod xts algif_skcipher af_alg 
sd_mod sg xt_TCPMSS xt_tcpudp iptable_mangle ghash_generic gf128mul vmx_crypto 
virtio_balloon ip_tables x_tables autofs4 ext4 crc16 jbd2 fscrypto mbcache 
crc32c_generic btrfs xor raid6_pq ohci_pci ehci_pci ohci_hcd virtio_blk 
virtio_net ehci_hcd usbcore crc32c_vpmsum usb_common virtio_pci virtio_ring 
virtio [last unloaded: scsi_debug]
  [  161.121016] CPU: 0 PID: 5473 Comm: rmmod Not tainted 4.8.0-15-generic 
#16-Ubuntu
  [  161.121067] task: c0005ae51980 task.stack: c0005ef58000
  [  161.121110] NIP: c0538ecc LR: c0538ee0 CTR: 
c00f7250
  [  161.121162] REGS: c0005ef5b9f0 TRAP: 0300   Not tainted  
(4.8.0-15-generic)
  [  161.121213] MSR: 80010280b033   
CR: 28002444  XER: 2000
  [  161.121390] CFAR: c009a8e0 DAR:  DSISR: 4000 
SOFTE: 1 
 GPR00: c0538e98 c0005ef5bc70 c0f67b00 
 
 GPR04: d1302018 0002  
c10d7b00 
 GPR08: c0fa7b00 0063 0073 
0004 
 GPR12: 28002844 cfb8  
 
 GPR16:  0100331f11f0 384b3890 
384b3848 
 GPR20: 384b3830 384b3870 384b38a8 
384b3888 
 GPR24: 3fffd23d6e70 c0ebdec8 fffe 
d1302018 
 GPR28: c0ebdeb8   
 
  [  161.122099] NIP [c0538ecc] ddebug_remove_module+0x8c/0x160
  [  161.122143] LR [c0538ee0] ddebug_remove_module+0xa0/0x160
  [  161.122186] Call Trace:
  [  161.122205] [c0005ef5bc70] [c0538e98] 
ddebug_remove_module+0x58/0x160 (unreliable)
  [  161.122280] [c0005ef5bd10] [c018961c] free_module+0x21c/0x3c0
  [  161.122333] [c0005ef5bd60] [c0189a38] 
SyS_delete_module+0x278/0x2f0
  [  161.122394] [c0005ef5be30] [c00095e0] system_call+0x38/0x108
  [  161.122445] Instruction dump:
  [  161.122472] 3d42fff5 e92a63b8 7fa9e000 7d3d4b78 ebe9 419e00bc 7d3e4b78 
3b40fffe 
  [  161.122561] 4818 7fbfe000 7ffdfb78 7ffefb78  419e0060 
e87e0010 7f64db78 
  [  161.122651] ---[ end trace 5f19b96c7077a0e0 ]---

  This isn't reproducible by merely loading and unloading the module, it
  apparently needs to get some actual exercise. I'll find a simpler
  reproducer than running the systemd test tomorrow morning.

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1626737/+subscriptions

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[Kernel-packages] [Bug 1626737] Re: [4.8.0-14/ppc64el regression] rmmod scsi_debug keeps causing kernel oops

2016-09-23 Thread Martin Pitt 
** Also affects: systemd (Ubuntu)
   Importance: Undecided
   Status: New

-- 
You received this bug notification because you are a member of Kernel
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https://bugs.launchpad.net/bugs/1626737

Title:
  [4.8.0-14/ppc64el regression] rmmod scsi_debug keeps causing kernel
  oops

Status in linux package in Ubuntu:
  Confirmed
Status in systemd package in Ubuntu:
  New

Bug description:
  Since upgrading to 4.8.0-14, the "storage" autopkgtest of systemd is
  broken. This uses scsi_debug to get a test hard drive, which is reset
  between the test through unloading/reloading the module. This has
  worked fine so far (and still works on amd64/i386), but now regularly
  triggers a kernel oops:

  [  161.120362] Unable to handle kernel paging request for data at address 
0x
  [  161.120468] Faulting instruction address: 0xc0538ecc
  [  161.120517] Oops: Kernel access of bad area, sig: 11 [#1]
  [  161.120555] SMP NR_CPUS=2048 NUMA pSeries
  [  161.120595] Modules linked in: dm_crypt dm_mod xts algif_skcipher af_alg 
sd_mod sg xt_TCPMSS xt_tcpudp iptable_mangle ghash_generic gf128mul vmx_crypto 
virtio_balloon ip_tables x_tables autofs4 ext4 crc16 jbd2 fscrypto mbcache 
crc32c_generic btrfs xor raid6_pq ohci_pci ehci_pci ohci_hcd virtio_blk 
virtio_net ehci_hcd usbcore crc32c_vpmsum usb_common virtio_pci virtio_ring 
virtio [last unloaded: scsi_debug]
  [  161.121016] CPU: 0 PID: 5473 Comm: rmmod Not tainted 4.8.0-15-generic 
#16-Ubuntu
  [  161.121067] task: c0005ae51980 task.stack: c0005ef58000
  [  161.121110] NIP: c0538ecc LR: c0538ee0 CTR: 
c00f7250
  [  161.121162] REGS: c0005ef5b9f0 TRAP: 0300   Not tainted  
(4.8.0-15-generic)
  [  161.121213] MSR: 80010280b033   
CR: 28002444  XER: 2000
  [  161.121390] CFAR: c009a8e0 DAR:  DSISR: 4000 
SOFTE: 1 
 GPR00: c0538e98 c0005ef5bc70 c0f67b00 
 
 GPR04: d1302018 0002  
c10d7b00 
 GPR08: c0fa7b00 0063 0073 
0004 
 GPR12: 28002844 cfb8  
 
 GPR16:  0100331f11f0 384b3890 
384b3848 
 GPR20: 384b3830 384b3870 384b38a8 
384b3888 
 GPR24: 3fffd23d6e70 c0ebdec8 fffe 
d1302018 
 GPR28: c0ebdeb8   
 
  [  161.122099] NIP [c0538ecc] ddebug_remove_module+0x8c/0x160
  [  161.122143] LR [c0538ee0] ddebug_remove_module+0xa0/0x160
  [  161.122186] Call Trace:
  [  161.122205] [c0005ef5bc70] [c0538e98] 
ddebug_remove_module+0x58/0x160 (unreliable)
  [  161.122280] [c0005ef5bd10] [c018961c] free_module+0x21c/0x3c0
  [  161.122333] [c0005ef5bd60] [c0189a38] 
SyS_delete_module+0x278/0x2f0
  [  161.122394] [c0005ef5be30] [c00095e0] system_call+0x38/0x108
  [  161.122445] Instruction dump:
  [  161.122472] 3d42fff5 e92a63b8 7fa9e000 7d3d4b78 ebe9 419e00bc 7d3e4b78 
3b40fffe 
  [  161.122561] 4818 7fbfe000 7ffdfb78 7ffefb78  419e0060 
e87e0010 7f64db78 
  [  161.122651] ---[ end trace 5f19b96c7077a0e0 ]---

  This isn't reproducible by merely loading and unloading the module, it
  apparently needs to get some actual exercise. I'll find a simpler
  reproducer than running the systemd test tomorrow morning.

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1626737/+subscriptions

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