Re: [syzbot] [virtualization?] linux-next boot error: WARNING: refcount bug in __free_pages_ok
On Thu, Feb 22, 2024 at 11:06:55AM +0800, Lei Yang wrote: > Hi All > > I hit a similar issue when doing a regression testing from my side. > For the error messages please help review the attachment. > > The latest commit: > commit c02197fc9076e7d991c8f6adc11759c5ba52ddc6 (HEAD -> master, > origin/master, origin/HEAD) > Merge: f2667e0c3240 0846dd77c834 > Author: Linus Torvalds > Date: Sat Feb 17 16:59:31 2024 -0800 > > Merge tag 'powerpc-6.8-3' of > git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux > > Pull powerpc fixes from Michael Ellerman: > "This is a bit of a big batch for rc4, but just due to holiday hangover > and because I didn't send any fixes last week due to a late revert > request. I think next week should be back to normal. > > Regards > Lei It all looks like a generic bug dealing with some refcounting in the allocator. So, a chance of a bisect there? -- MST
Re: [syzbot] [virtualization?] linux-next boot error: WARNING: refcount bug in __free_pages_ok
Hi All I hit a similar issue when doing a regression testing from my side. For the error messages please help review the attachment. The latest commit: commit c02197fc9076e7d991c8f6adc11759c5ba52ddc6 (HEAD -> master, origin/master, origin/HEAD) Merge: f2667e0c3240 0846dd77c834 Author: Linus Torvalds Date: Sat Feb 17 16:59:31 2024 -0800 Merge tag 'powerpc-6.8-3' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux Pull powerpc fixes from Michael Ellerman: "This is a bit of a big batch for rc4, but just due to holiday hangover and because I didn't send any fixes last week due to a late revert request. I think next week should be back to normal. Regards Lei On Mon, Feb 19, 2024 at 3:35 PM Michael S. Tsirkin wrote: > > On Sun, Feb 18, 2024 at 09:06:18PM -0800, syzbot wrote: > > Hello, > > > > syzbot found the following issue on: > > > > HEAD commit:d37e1e4c52bc Add linux-next specific files for 20240216 > > git tree: linux-next > > console output: https://syzkaller.appspot.com/x/log.txt?x=171ca65218 > > kernel config: https://syzkaller.appspot.com/x/.config?x=4bc446d42a7d56c0 > > dashboard link: https://syzkaller.appspot.com/bug?extid=6f3c38e8a6a0297caa5a > > compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for > > Debian) 2.40 > > > > Downloadable assets: > > disk image: > > https://storage.googleapis.com/syzbot-assets/14d0894504b9/disk-d37e1e4c.raw.xz > > vmlinux: > > https://storage.googleapis.com/syzbot-assets/6cda61e084ee/vmlinux-d37e1e4c.xz > > kernel image: > > https://storage.googleapis.com/syzbot-assets/720c85283c05/bzImage-d37e1e4c.xz > > > > IMPORTANT: if you fix the issue, please add the following tag to the commit: > > Reported-by: syzbot+6f3c38e8a6a0297ca...@syzkaller.appspotmail.com > > > > Key type pkcs7_test registered > > Block layer SCSI generic (bsg) driver version 0.4 loaded (major 239) > > io scheduler mq-deadline registered > > io scheduler kyber registered > > io scheduler bfq registered > > input: Power Button as /devices/LNXSYSTM:00/LNXPWRBN:00/input/input0 > > ACPI: button: Power Button [PWRF] > > input: Sleep Button as /devices/LNXSYSTM:00/LNXSLPBN:00/input/input1 > > ACPI: button: Sleep Button [SLPF] > > ioatdma: Intel(R) QuickData Technology Driver 5.00 > > ACPI: \_SB_.LNKC: Enabled at IRQ 11 > > virtio-pci :00:03.0: virtio_pci: leaving for legacy driver > > ACPI: \_SB_.LNKD: Enabled at IRQ 10 > > virtio-pci :00:04.0: virtio_pci: leaving for legacy driver > > ACPI: \_SB_.LNKB: Enabled at IRQ 10 > > virtio-pci :00:06.0: virtio_pci: leaving for legacy driver > > virtio-pci :00:07.0: virtio_pci: leaving for legacy driver > > N_HDLC line discipline registered with maxframe=4096 > > Serial: 8250/16550 driver, 4 ports, IRQ sharing enabled > > 00:03: ttyS0 at I/O 0x3f8 (irq = 4, base_baud = 115200) is a 16550A > > 00:04: ttyS1 at I/O 0x2f8 (irq = 3, base_baud = 115200) is a 16550A > > 00:05: ttyS2 at I/O 0x3e8 (irq = 6, base_baud = 115200) is a 16550A > > 00:06: ttyS3 at I/O 0x2e8 (irq = 7, base_baud = 115200) is a 16550A > > Non-volatile memory driver v1.3 > > Linux agpgart interface v0.103 > > ACPI: bus type drm_connector registered > > [drm] Initialized vgem 1.0.0 20120112 for vgem on minor 0 > > [drm] Initialized vkms 1.0.0 20180514 for vkms on minor 1 > > Console: switching to colour frame buffer device 128x48 > > platform vkms: [drm] fb0: vkmsdrmfb frame buffer device > > usbcore: registered new interface driver udl > > brd: module loaded > > loop: module loaded > > zram: Added device: zram0 > > null_blk: disk nullb0 created > > null_blk: module loaded > > Guest personality initialized and is inactive > > VMCI host device registered (name=vmci, major=10, minor=118) > > Initialized host personality > > usbcore: registered new interface driver rtsx_usb > > usbcore: registered new interface driver viperboard > > usbcore: registered new interface driver dln2 > > usbcore: registered new interface driver pn533_usb > > nfcsim 0.2 initialized > > usbcore: registered new interface driver port100 > > usbcore: registered new interface driver nfcmrvl > > Loading iSCSI transport class v2.0-870. > > virtio_scsi virtio0: 1/0/0 default/read/poll queues > > [ cut here ] > > refcount_t: decrement hit 0; leaking memory. > > WARNING: CPU: 0 PID: 1 at lib/refcount.c:31 > > refcount_warn_saturate+0xfa/0x1d0 lib/refcount.c:31 > > Modules linked in: > > CPU: 0 PID: 1 Comm: swapper/0 Not tainted 6.8.0-rc4-next-20240216-syzkaller > > #0 > > Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS > > Google 01/25/2024 > > RIP: 0010:refcount_warn_saturate+0xfa/0x1d0 lib/refcount.c:31 > > Code: b2 00 00 00 e8 b7 94 f0 fc 5b 5d c3 cc cc cc cc e8 ab 94 f0 fc c6 05 > > c6 16 ce 0a 01 90 48 c7 c7 a0 5a fe 8b e8 67 69 b4 fc 90 <0f> 0b 90 90 eb > > d9 e8 8b 94 f0 fc c6 05 a3 16 ce 0a 01 90 48 c7 c7 > > RSP: :c9066e10 EFLAGS: 00010246 > > RAX: 15c2c224c9b50400 RBX:
Re: [syzbot] [virtualization?] linux-next boot error: WARNING: refcount bug in __free_pages_ok
On Mon, 19 Feb 2024 02:35:20 -0500 "Michael S. Tsirkin" wrote: > On Sun, Feb 18, 2024 at 09:06:18PM -0800, syzbot wrote: > > Hello, > > > > syzbot found the following issue on: > > > > HEAD commit:d37e1e4c52bc Add linux-next specific files for 20240216 > > git tree: linux-next > > console output: https://syzkaller.appspot.com/x/log.txt?x=171ca65218 > > kernel config: https://syzkaller.appspot.com/x/.config?x=4bc446d42a7d56c0 > > dashboard link: https://syzkaller.appspot.com/bug?extid=6f3c38e8a6a0297caa5a > > compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for > > Debian) 2.40 > > > > Downloadable assets: > > disk image: > > https://storage.googleapis.com/syzbot-assets/14d0894504b9/disk-d37e1e4c.raw.xz > > vmlinux: > > https://storage.googleapis.com/syzbot-assets/6cda61e084ee/vmlinux-d37e1e4c.xz > > kernel image: > > https://storage.googleapis.com/syzbot-assets/720c85283c05/bzImage-d37e1e4c.xz > > > > IMPORTANT: if you fix the issue, please add the following tag to the commit: > > Reported-by: syzbot+6f3c38e8a6a0297ca...@syzkaller.appspotmail.com > > > > ... > > > usbcore: registered new interface driver port100 > > usbcore: registered new interface driver nfcmrvl > > Loading iSCSI transport class v2.0-870. > > virtio_scsi virtio0: 1/0/0 default/read/poll queues > > [ cut here ] > > refcount_t: decrement hit 0; leaking memory. > > WARNING: CPU: 0 PID: 1 at lib/refcount.c:31 > > refcount_warn_saturate+0xfa/0x1d0 lib/refcount.c:31 > > Modules linked in: > > CPU: 0 PID: 1 Comm: swapper/0 Not tainted 6.8.0-rc4-next-20240216-syzkaller > > #0 > > Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS > > Google 01/25/2024 > > RIP: 0010:refcount_warn_saturate+0xfa/0x1d0 lib/refcount.c:31 > > Code: b2 00 00 00 e8 b7 94 f0 fc 5b 5d c3 cc cc cc cc e8 ab 94 f0 fc c6 05 > > c6 16 ce 0a 01 90 48 c7 c7 a0 5a fe 8b e8 67 69 b4 fc 90 <0f> 0b 90 90 eb > > d9 e8 8b 94 f0 fc c6 05 a3 16 ce 0a 01 90 48 c7 c7 > > RSP: :c9066e10 EFLAGS: 00010246 > > RAX: 15c2c224c9b50400 RBX: 888020827d2c RCX: 8880162d8000 > > RDX: RSI: RDI: > > RBP: 0004 R08: 8157b942 R09: fbfff1bf95cc > > R10: dc00 R11: fbfff1bf95cc R12: ea000502fdc0 > > R13: ea000502fdc8 R14: 1d4000a05fb9 R15: > > FS: () GS:8880b940() knlGS: > > CS: 0010 DS: ES: CR0: 80050033 > > CR2: 88823000 CR3: 0df32000 CR4: 003506f0 > > DR0: DR1: DR2: > > DR3: DR6: fffe0ff0 DR7: 0400 > > Call Trace: > > > > reset_page_owner include/linux/page_owner.h:24 [inline] > > free_pages_prepare mm/page_alloc.c:1140 [inline] > > __free_pages_ok+0xc42/0xd70 mm/page_alloc.c:1269 > > make_alloc_exact+0xc4/0x140 mm/page_alloc.c:4847 > > vring_alloc_queue drivers/virtio/virtio_ring.c:319 [inline] > > Wow this seems to be breakage deep in mm/ - all virtio does is > call alloc_pages_exact and that corrupts the refcounts? > Will the bot be performing a bisection? If not, can one please be performed?
Re: [syzbot] [virtualization?] linux-next boot error: WARNING: refcount bug in __free_pages_ok
On Sun, Feb 18, 2024 at 09:06:18PM -0800, syzbot wrote: > Hello, > > syzbot found the following issue on: > > HEAD commit:d37e1e4c52bc Add linux-next specific files for 20240216 > git tree: linux-next > console output: https://syzkaller.appspot.com/x/log.txt?x=171ca65218 > kernel config: https://syzkaller.appspot.com/x/.config?x=4bc446d42a7d56c0 > dashboard link: https://syzkaller.appspot.com/bug?extid=6f3c38e8a6a0297caa5a > compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) > 2.40 > > Downloadable assets: > disk image: > https://storage.googleapis.com/syzbot-assets/14d0894504b9/disk-d37e1e4c.raw.xz > vmlinux: > https://storage.googleapis.com/syzbot-assets/6cda61e084ee/vmlinux-d37e1e4c.xz > kernel image: > https://storage.googleapis.com/syzbot-assets/720c85283c05/bzImage-d37e1e4c.xz > > IMPORTANT: if you fix the issue, please add the following tag to the commit: > Reported-by: syzbot+6f3c38e8a6a0297ca...@syzkaller.appspotmail.com > > Key type pkcs7_test registered > Block layer SCSI generic (bsg) driver version 0.4 loaded (major 239) > io scheduler mq-deadline registered > io scheduler kyber registered > io scheduler bfq registered > input: Power Button as /devices/LNXSYSTM:00/LNXPWRBN:00/input/input0 > ACPI: button: Power Button [PWRF] > input: Sleep Button as /devices/LNXSYSTM:00/LNXSLPBN:00/input/input1 > ACPI: button: Sleep Button [SLPF] > ioatdma: Intel(R) QuickData Technology Driver 5.00 > ACPI: \_SB_.LNKC: Enabled at IRQ 11 > virtio-pci :00:03.0: virtio_pci: leaving for legacy driver > ACPI: \_SB_.LNKD: Enabled at IRQ 10 > virtio-pci :00:04.0: virtio_pci: leaving for legacy driver > ACPI: \_SB_.LNKB: Enabled at IRQ 10 > virtio-pci :00:06.0: virtio_pci: leaving for legacy driver > virtio-pci :00:07.0: virtio_pci: leaving for legacy driver > N_HDLC line discipline registered with maxframe=4096 > Serial: 8250/16550 driver, 4 ports, IRQ sharing enabled > 00:03: ttyS0 at I/O 0x3f8 (irq = 4, base_baud = 115200) is a 16550A > 00:04: ttyS1 at I/O 0x2f8 (irq = 3, base_baud = 115200) is a 16550A > 00:05: ttyS2 at I/O 0x3e8 (irq = 6, base_baud = 115200) is a 16550A > 00:06: ttyS3 at I/O 0x2e8 (irq = 7, base_baud = 115200) is a 16550A > Non-volatile memory driver v1.3 > Linux agpgart interface v0.103 > ACPI: bus type drm_connector registered > [drm] Initialized vgem 1.0.0 20120112 for vgem on minor 0 > [drm] Initialized vkms 1.0.0 20180514 for vkms on minor 1 > Console: switching to colour frame buffer device 128x48 > platform vkms: [drm] fb0: vkmsdrmfb frame buffer device > usbcore: registered new interface driver udl > brd: module loaded > loop: module loaded > zram: Added device: zram0 > null_blk: disk nullb0 created > null_blk: module loaded > Guest personality initialized and is inactive > VMCI host device registered (name=vmci, major=10, minor=118) > Initialized host personality > usbcore: registered new interface driver rtsx_usb > usbcore: registered new interface driver viperboard > usbcore: registered new interface driver dln2 > usbcore: registered new interface driver pn533_usb > nfcsim 0.2 initialized > usbcore: registered new interface driver port100 > usbcore: registered new interface driver nfcmrvl > Loading iSCSI transport class v2.0-870. > virtio_scsi virtio0: 1/0/0 default/read/poll queues > [ cut here ] > refcount_t: decrement hit 0; leaking memory. > WARNING: CPU: 0 PID: 1 at lib/refcount.c:31 refcount_warn_saturate+0xfa/0x1d0 > lib/refcount.c:31 > Modules linked in: > CPU: 0 PID: 1 Comm: swapper/0 Not tainted 6.8.0-rc4-next-20240216-syzkaller #0 > Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS > Google 01/25/2024 > RIP: 0010:refcount_warn_saturate+0xfa/0x1d0 lib/refcount.c:31 > Code: b2 00 00 00 e8 b7 94 f0 fc 5b 5d c3 cc cc cc cc e8 ab 94 f0 fc c6 05 c6 > 16 ce 0a 01 90 48 c7 c7 a0 5a fe 8b e8 67 69 b4 fc 90 <0f> 0b 90 90 eb d9 e8 > 8b 94 f0 fc c6 05 a3 16 ce 0a 01 90 48 c7 c7 > RSP: :c9066e10 EFLAGS: 00010246 > RAX: 15c2c224c9b50400 RBX: 888020827d2c RCX: 8880162d8000 > RDX: RSI: RDI: > RBP: 0004 R08: 8157b942 R09: fbfff1bf95cc > R10: dc00 R11: fbfff1bf95cc R12: ea000502fdc0 > R13: ea000502fdc8 R14: 1d4000a05fb9 R15: > FS: () GS:8880b940() knlGS: > CS: 0010 DS: ES: CR0: 80050033 > CR2: 88823000 CR3: 0df32000 CR4: 003506f0 > DR0: DR1: DR2: > DR3: DR6: fffe0ff0 DR7: 0400 > Call Trace: > > reset_page_owner include/linux/page_owner.h:24 [inline] > free_pages_prepare mm/page_alloc.c:1140 [inline] > __free_pages_ok+0xc42/0xd70 mm/page_alloc.c:1269 > make_alloc_exact+0xc4/0x140 mm/page_alloc.c:4847 > vring_alloc_queue drivers/virtio/virtio_ring.c:319
[syzbot] [virtualization?] linux-next boot error: WARNING: refcount bug in __free_pages_ok
Hello, syzbot found the following issue on: HEAD commit:d37e1e4c52bc Add linux-next specific files for 20240216 git tree: linux-next console output: https://syzkaller.appspot.com/x/log.txt?x=171ca65218 kernel config: https://syzkaller.appspot.com/x/.config?x=4bc446d42a7d56c0 dashboard link: https://syzkaller.appspot.com/bug?extid=6f3c38e8a6a0297caa5a compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/14d0894504b9/disk-d37e1e4c.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/6cda61e084ee/vmlinux-d37e1e4c.xz kernel image: https://storage.googleapis.com/syzbot-assets/720c85283c05/bzImage-d37e1e4c.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+6f3c38e8a6a0297ca...@syzkaller.appspotmail.com Key type pkcs7_test registered Block layer SCSI generic (bsg) driver version 0.4 loaded (major 239) io scheduler mq-deadline registered io scheduler kyber registered io scheduler bfq registered input: Power Button as /devices/LNXSYSTM:00/LNXPWRBN:00/input/input0 ACPI: button: Power Button [PWRF] input: Sleep Button as /devices/LNXSYSTM:00/LNXSLPBN:00/input/input1 ACPI: button: Sleep Button [SLPF] ioatdma: Intel(R) QuickData Technology Driver 5.00 ACPI: \_SB_.LNKC: Enabled at IRQ 11 virtio-pci :00:03.0: virtio_pci: leaving for legacy driver ACPI: \_SB_.LNKD: Enabled at IRQ 10 virtio-pci :00:04.0: virtio_pci: leaving for legacy driver ACPI: \_SB_.LNKB: Enabled at IRQ 10 virtio-pci :00:06.0: virtio_pci: leaving for legacy driver virtio-pci :00:07.0: virtio_pci: leaving for legacy driver N_HDLC line discipline registered with maxframe=4096 Serial: 8250/16550 driver, 4 ports, IRQ sharing enabled 00:03: ttyS0 at I/O 0x3f8 (irq = 4, base_baud = 115200) is a 16550A 00:04: ttyS1 at I/O 0x2f8 (irq = 3, base_baud = 115200) is a 16550A 00:05: ttyS2 at I/O 0x3e8 (irq = 6, base_baud = 115200) is a 16550A 00:06: ttyS3 at I/O 0x2e8 (irq = 7, base_baud = 115200) is a 16550A Non-volatile memory driver v1.3 Linux agpgart interface v0.103 ACPI: bus type drm_connector registered [drm] Initialized vgem 1.0.0 20120112 for vgem on minor 0 [drm] Initialized vkms 1.0.0 20180514 for vkms on minor 1 Console: switching to colour frame buffer device 128x48 platform vkms: [drm] fb0: vkmsdrmfb frame buffer device usbcore: registered new interface driver udl brd: module loaded loop: module loaded zram: Added device: zram0 null_blk: disk nullb0 created null_blk: module loaded Guest personality initialized and is inactive VMCI host device registered (name=vmci, major=10, minor=118) Initialized host personality usbcore: registered new interface driver rtsx_usb usbcore: registered new interface driver viperboard usbcore: registered new interface driver dln2 usbcore: registered new interface driver pn533_usb nfcsim 0.2 initialized usbcore: registered new interface driver port100 usbcore: registered new interface driver nfcmrvl Loading iSCSI transport class v2.0-870. virtio_scsi virtio0: 1/0/0 default/read/poll queues [ cut here ] refcount_t: decrement hit 0; leaking memory. WARNING: CPU: 0 PID: 1 at lib/refcount.c:31 refcount_warn_saturate+0xfa/0x1d0 lib/refcount.c:31 Modules linked in: CPU: 0 PID: 1 Comm: swapper/0 Not tainted 6.8.0-rc4-next-20240216-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/25/2024 RIP: 0010:refcount_warn_saturate+0xfa/0x1d0 lib/refcount.c:31 Code: b2 00 00 00 e8 b7 94 f0 fc 5b 5d c3 cc cc cc cc e8 ab 94 f0 fc c6 05 c6 16 ce 0a 01 90 48 c7 c7 a0 5a fe 8b e8 67 69 b4 fc 90 <0f> 0b 90 90 eb d9 e8 8b 94 f0 fc c6 05 a3 16 ce 0a 01 90 48 c7 c7 RSP: :c9066e10 EFLAGS: 00010246 RAX: 15c2c224c9b50400 RBX: 888020827d2c RCX: 8880162d8000 RDX: RSI: RDI: RBP: 0004 R08: 8157b942 R09: fbfff1bf95cc R10: dc00 R11: fbfff1bf95cc R12: ea000502fdc0 R13: ea000502fdc8 R14: 1d4000a05fb9 R15: FS: () GS:8880b940() knlGS: CS: 0010 DS: ES: CR0: 80050033 CR2: 88823000 CR3: 0df32000 CR4: 003506f0 DR0: DR1: DR2: DR3: DR6: fffe0ff0 DR7: 0400 Call Trace: reset_page_owner include/linux/page_owner.h:24 [inline] free_pages_prepare mm/page_alloc.c:1140 [inline] __free_pages_ok+0xc42/0xd70 mm/page_alloc.c:1269 make_alloc_exact+0xc4/0x140 mm/page_alloc.c:4847 vring_alloc_queue drivers/virtio/virtio_ring.c:319 [inline] vring_alloc_queue_split+0x20a/0x600 drivers/virtio/virtio_ring.c:1108 vring_create_virtqueue_split+0xc6/0x310 drivers/virtio/virtio_ring.c:1158 vring_create_virtqueue+0xca/0x110 drivers/virtio/virtio_ring.c:2683 setup_vq+0xe9/0x2d0
