BUG: unable to handle kernel paging request in run_timer_softirq
10 views
Skip to first unread message
syzbot
Aug 13, 2019, 5:08:07 PM8/13/19
to syzkaller-upst...@googlegroups.com
Hello,
syzbot found the following crash on:
HEAD commit: 53f6f391 caif: no need to check return value of debugfs_cr..
git tree: net-next
console output: https://syzkaller.appspot.com/x/log.txt?x=14c9c336600000
kernel config: https://syzkaller.appspot.com/x/.config?x=d4cf1ffb87d590d7
dashboard link: https://syzkaller.appspot.com/bug?extid=f9dc5909e6223a399a1e
compiler: gcc (GCC) 9.0.0 20181231 (experimental)
CC: [b...@alien8.de colin...@canonical.com dr...@endlessm.com
h...@zytor.com jacob....@linux.intel.com linux-...@vger.kernel.org
mho...@suse.com mi...@redhat.com pu...@hygon.cn rp...@linux.vnet.ibm.com
tg...@linutronix.de x...@kernel.org net...@vger.kernel.org]
Unfortunately, I don't have any reproducer for this crash yet.
IMPORTANT: if you fix the bug, please add the following tag to the commit:
Reported-by: syzbot+f9dc59...@syzkaller.appspotmail.com
BUG: unable to handle page fault for address: ffff88809c231830
#PF: supervisor read access in kernel mode
#PF: error_code(0x0000) - not-present page
PGD b601067 P4D b601067 PUD 21ffff067 PMD a9631063 PTE 0
Oops: 0000 [#1] PREEMPT SMP KASAN
CPU: 1 PID: 23282 Comm: modprobe Not tainted 5.3.0-rc3+ #129
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS
Google 01/01/2011
RIP: 0010:lookup_object lib/debugobjects.c:193 [inline]
RIP: 0010:debug_object_deactivate lib/debugobjects.c:708 [inline]
RIP: 0010:debug_object_deactivate+0x175/0x320 lib/debugobjects.c:694
Code: 01 00 00 4d 8b 24 24 4d 85 e4 0f 84 83 00 00 00 49 8d 7c 24 18 83 c3
01 48 89 fa 48 c1 ea 03 42 80 3c 2a 00 0f 85 26 01 00 00 <4d> 3b 7c 24 18
75 c0 49 8d 7c 24 10 48 b8 00 00 00 00 00 fc ff df
RSP: 0018:ffff8880ae909cf0 EFLAGS: 00010046
RAX: 1ffffffff153ea78 RBX: 0000000000000004 RCX: ffffffff8159c75a
RDX: 1ffff11013846306 RSI: 0000000000000086 RDI: ffff88809c231830
RBP: ffff8880ae909dd8 R08: 0000000000000004 R09: ffffffff8a9f53c8
R10: ffffed1015d2138a R11: 0000000000000003 R12: ffff88809c231818
R13: dffffc0000000000 R14: 1ffff11015d213a2 R15: ffff88808f25e298
FS: 00007f95d24d9700(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffff88809c231830 CR3: 000000005c421000 CR4: 00000000001406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
<IRQ>
debug_timer_deactivate kernel/time/timer.c:715 [inline]
debug_deactivate kernel/time/timer.c:764 [inline]
detach_timer kernel/time/timer.c:809 [inline]
expire_timers kernel/time/timer.c:1356 [inline]
__run_timers kernel/time/timer.c:1685 [inline]
__run_timers kernel/time/timer.c:1653 [inline]
run_timer_softirq+0x4f4/0x17a0 kernel/time/timer.c:1698
__do_softirq+0x262/0x98c kernel/softirq.c:292
invoke_softirq kernel/softirq.c:373 [inline]
irq_exit+0x19b/0x1e0 kernel/softirq.c:413
exiting_irq arch/x86/include/asm/apic.h:537 [inline]
smp_apic_timer_interrupt+0x1a3/0x610 arch/x86/kernel/apic/apic.c:1095
apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:830
</IRQ>
RIP: 0010:__read_once_size include/linux/compiler.h:199 [inline]
RIP: 0010:__mnt_want_write+0xc2/0x2f0 fs/namespace.c:324
Code: 85 e4 74 50 48 b8 00 00 00 00 00 fc ff df 4d 89 f5 4d 89 f4 49 c1 ed
03 41 83 e4 07 49 01 c5 41 83 c4 03 e8 80 48 b4 ff f3 90 <41> 0f b6 45 00
41 38 c4 7c 08 84 c0 0f 85 b4 01 00 00 8b 73 10 31
RSP: 0018:ffff88806b997d00 EFLAGS: 00000293 ORIG_RAX: ffffffffffffff13
RAX: ffff8880648d6180 RBX: ffff8880a9806060 RCX: ffffffff81be4127
RDX: 0000000000000000 RSI: ffffffff81be4100 RDI: 0000000000000005
RBP: ffff88806b997d30 R08: ffff8880648d6180 R09: 0000000000000000
R10: fffffbfff134b0af R11: ffff8880648d6180 R12: 0000000000000003
R13: ffffed1015300c0e R14: ffff8880a9806070 R15: 0000000000000200
touch_atime+0x174/0x2a0 fs/inode.c:1739
file_accessed include/linux/fs.h:2175 [inline]
iterate_dir+0x36d/0x5e0 fs/readdir.c:56
__do_sys_getdents fs/readdir.c:231 [inline]
__se_sys_getdents fs/readdir.c:212 [inline]
__x64_sys_getdents+0x226/0x3c0 fs/readdir.c:212
do_syscall_64+0xfd/0x6a0 arch/x86/entry/common.c:296
entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x7f95d1dc9575
Code: 83 c7 13 e9 ed 53 fd ff 90 90 90 90 90 90 90 90 90 90 90 90 90 41 56
49 89 f0 48 63 ff b8 4e 00 00 00 41 55 41 54 55 53 0f 05 <48> 3d 00 f0 ff
ff 77 58 4d 8d 24 00 49 89 c5 4d 39 e0 73 40 4c 89
RSP: 002b:00007ffe35ae27e0 EFLAGS: 00000246 ORIG_RAX: 000000000000004e
RAX: ffffffffffffffda RBX: 0000564a93f6b1c0 RCX: 00007f95d1dc9575
RDX: 0000000000008000 RSI: 0000564a93f6b1f0 RDI: 0000000000000000
RBP: 00007ffe35ae2a80 R08: 0000564a93f6b1f0 R09: 00007f95d1e44070
R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffe35ae2958
R13: ffffffffffffffa8 R14: 0000000000000002 R15: 00055facc5da8780
Modules linked in:
CR2: ffff88809c231830
---[ end trace b3f58d1cdbb16da0 ]---
RIP: 0010:lookup_object lib/debugobjects.c:193 [inline]
RIP: 0010:debug_object_deactivate lib/debugobjects.c:708 [inline]
RIP: 0010:debug_object_deactivate+0x175/0x320 lib/debugobjects.c:694
Code: 01 00 00 4d 8b 24 24 4d 85 e4 0f 84 83 00 00 00 49 8d 7c 24 18 83 c3
01 48 89 fa 48 c1 ea 03 42 80 3c 2a 00 0f 85 26 01 00 00 <4d> 3b 7c 24 18
75 c0 49 8d 7c 24 10 48 b8 00 00 00 00 00 fc ff df
RSP: 0018:ffff8880ae909cf0 EFLAGS: 00010046
RAX: 1ffffffff153ea78 RBX: 0000000000000004 RCX: ffffffff8159c75a
RDX: 1ffff11013846306 RSI: 0000000000000086 RDI: ffff88809c231830
RBP: ffff8880ae909dd8 R08: 0000000000000004 R09: ffffffff8a9f53c8
R10: ffffed1015d2138a R11: 0000000000000003 R12: ffff88809c231818
R13: dffffc0000000000 R14: 1ffff11015d213a2 R15: ffff88808f25e298
FS: 00007f95d24d9700(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffff88809c231830 CR3: 000000005c421000 CR4: 00000000001406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
---
This bug is generated by a bot. It may contain errors.
See https://goo.gl/tpsmEJ for more information about syzbot.
syzbot engineers can be reached at syzk...@googlegroups.com.
syzbot will keep track of this bug report. See:
https://goo.gl/tpsmEJ#status for how to communicate with syzbot.
syzbot found the following crash on:
HEAD commit: 53f6f391 caif: no need to check return value of debugfs_cr..
git tree: net-next
console output: https://syzkaller.appspot.com/x/log.txt?x=14c9c336600000
kernel config: https://syzkaller.appspot.com/x/.config?x=d4cf1ffb87d590d7
dashboard link: https://syzkaller.appspot.com/bug?extid=f9dc5909e6223a399a1e
compiler: gcc (GCC) 9.0.0 20181231 (experimental)
CC: [b...@alien8.de colin...@canonical.com dr...@endlessm.com
h...@zytor.com jacob....@linux.intel.com linux-...@vger.kernel.org
mho...@suse.com mi...@redhat.com pu...@hygon.cn rp...@linux.vnet.ibm.com
tg...@linutronix.de x...@kernel.org net...@vger.kernel.org]
Unfortunately, I don't have any reproducer for this crash yet.
IMPORTANT: if you fix the bug, please add the following tag to the commit:
Reported-by: syzbot+f9dc59...@syzkaller.appspotmail.com
BUG: unable to handle page fault for address: ffff88809c231830
#PF: supervisor read access in kernel mode
#PF: error_code(0x0000) - not-present page
PGD b601067 P4D b601067 PUD 21ffff067 PMD a9631063 PTE 0
Oops: 0000 [#1] PREEMPT SMP KASAN
CPU: 1 PID: 23282 Comm: modprobe Not tainted 5.3.0-rc3+ #129
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS
Google 01/01/2011
RIP: 0010:lookup_object lib/debugobjects.c:193 [inline]
RIP: 0010:debug_object_deactivate lib/debugobjects.c:708 [inline]
RIP: 0010:debug_object_deactivate+0x175/0x320 lib/debugobjects.c:694
Code: 01 00 00 4d 8b 24 24 4d 85 e4 0f 84 83 00 00 00 49 8d 7c 24 18 83 c3
01 48 89 fa 48 c1 ea 03 42 80 3c 2a 00 0f 85 26 01 00 00 <4d> 3b 7c 24 18
75 c0 49 8d 7c 24 10 48 b8 00 00 00 00 00 fc ff df
RSP: 0018:ffff8880ae909cf0 EFLAGS: 00010046
RAX: 1ffffffff153ea78 RBX: 0000000000000004 RCX: ffffffff8159c75a
RDX: 1ffff11013846306 RSI: 0000000000000086 RDI: ffff88809c231830
RBP: ffff8880ae909dd8 R08: 0000000000000004 R09: ffffffff8a9f53c8
R10: ffffed1015d2138a R11: 0000000000000003 R12: ffff88809c231818
R13: dffffc0000000000 R14: 1ffff11015d213a2 R15: ffff88808f25e298
FS: 00007f95d24d9700(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffff88809c231830 CR3: 000000005c421000 CR4: 00000000001406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
<IRQ>
debug_timer_deactivate kernel/time/timer.c:715 [inline]
debug_deactivate kernel/time/timer.c:764 [inline]
detach_timer kernel/time/timer.c:809 [inline]
expire_timers kernel/time/timer.c:1356 [inline]
__run_timers kernel/time/timer.c:1685 [inline]
__run_timers kernel/time/timer.c:1653 [inline]
run_timer_softirq+0x4f4/0x17a0 kernel/time/timer.c:1698
__do_softirq+0x262/0x98c kernel/softirq.c:292
invoke_softirq kernel/softirq.c:373 [inline]
irq_exit+0x19b/0x1e0 kernel/softirq.c:413
exiting_irq arch/x86/include/asm/apic.h:537 [inline]
smp_apic_timer_interrupt+0x1a3/0x610 arch/x86/kernel/apic/apic.c:1095
apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:830
</IRQ>
RIP: 0010:__read_once_size include/linux/compiler.h:199 [inline]
RIP: 0010:__mnt_want_write+0xc2/0x2f0 fs/namespace.c:324
Code: 85 e4 74 50 48 b8 00 00 00 00 00 fc ff df 4d 89 f5 4d 89 f4 49 c1 ed
03 41 83 e4 07 49 01 c5 41 83 c4 03 e8 80 48 b4 ff f3 90 <41> 0f b6 45 00
41 38 c4 7c 08 84 c0 0f 85 b4 01 00 00 8b 73 10 31
RSP: 0018:ffff88806b997d00 EFLAGS: 00000293 ORIG_RAX: ffffffffffffff13
RAX: ffff8880648d6180 RBX: ffff8880a9806060 RCX: ffffffff81be4127
RDX: 0000000000000000 RSI: ffffffff81be4100 RDI: 0000000000000005
RBP: ffff88806b997d30 R08: ffff8880648d6180 R09: 0000000000000000
R10: fffffbfff134b0af R11: ffff8880648d6180 R12: 0000000000000003
R13: ffffed1015300c0e R14: ffff8880a9806070 R15: 0000000000000200
touch_atime+0x174/0x2a0 fs/inode.c:1739
file_accessed include/linux/fs.h:2175 [inline]
iterate_dir+0x36d/0x5e0 fs/readdir.c:56
__do_sys_getdents fs/readdir.c:231 [inline]
__se_sys_getdents fs/readdir.c:212 [inline]
__x64_sys_getdents+0x226/0x3c0 fs/readdir.c:212
do_syscall_64+0xfd/0x6a0 arch/x86/entry/common.c:296
entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x7f95d1dc9575
Code: 83 c7 13 e9 ed 53 fd ff 90 90 90 90 90 90 90 90 90 90 90 90 90 41 56
49 89 f0 48 63 ff b8 4e 00 00 00 41 55 41 54 55 53 0f 05 <48> 3d 00 f0 ff
ff 77 58 4d 8d 24 00 49 89 c5 4d 39 e0 73 40 4c 89
RSP: 002b:00007ffe35ae27e0 EFLAGS: 00000246 ORIG_RAX: 000000000000004e
RAX: ffffffffffffffda RBX: 0000564a93f6b1c0 RCX: 00007f95d1dc9575
RDX: 0000000000008000 RSI: 0000564a93f6b1f0 RDI: 0000000000000000
RBP: 00007ffe35ae2a80 R08: 0000564a93f6b1f0 R09: 00007f95d1e44070
R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffe35ae2958
R13: ffffffffffffffa8 R14: 0000000000000002 R15: 00055facc5da8780
Modules linked in:
CR2: ffff88809c231830
---[ end trace b3f58d1cdbb16da0 ]---
RIP: 0010:lookup_object lib/debugobjects.c:193 [inline]
RIP: 0010:debug_object_deactivate lib/debugobjects.c:708 [inline]
RIP: 0010:debug_object_deactivate+0x175/0x320 lib/debugobjects.c:694
Code: 01 00 00 4d 8b 24 24 4d 85 e4 0f 84 83 00 00 00 49 8d 7c 24 18 83 c3
01 48 89 fa 48 c1 ea 03 42 80 3c 2a 00 0f 85 26 01 00 00 <4d> 3b 7c 24 18
75 c0 49 8d 7c 24 10 48 b8 00 00 00 00 00 fc ff df
RSP: 0018:ffff8880ae909cf0 EFLAGS: 00010046
RAX: 1ffffffff153ea78 RBX: 0000000000000004 RCX: ffffffff8159c75a
RDX: 1ffff11013846306 RSI: 0000000000000086 RDI: ffff88809c231830
RBP: ffff8880ae909dd8 R08: 0000000000000004 R09: ffffffff8a9f53c8
R10: ffffed1015d2138a R11: 0000000000000003 R12: ffff88809c231818
R13: dffffc0000000000 R14: 1ffff11015d213a2 R15: ffff88808f25e298
FS: 00007f95d24d9700(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffff88809c231830 CR3: 000000005c421000 CR4: 00000000001406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
---
This bug is generated by a bot. It may contain errors.
See https://goo.gl/tpsmEJ for more information about syzbot.
syzbot engineers can be reached at syzk...@googlegroups.com.
syzbot will keep track of this bug report. See:
https://goo.gl/tpsmEJ#status for how to communicate with syzbot.
syzbot
Nov 11, 2019, 7:51:05 AM11/11/19
to syzkaller-upst...@googlegroups.com
Auto-closing this bug as obsolete.
Crashes did not happen for a while, no reproducer and no activity.
Crashes did not happen for a while, no reproducer and no activity.
Reply all
Reply to author
Forward
0 new messages