general protection fault in check_preempt_wakeup
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syzbot
Jun 21, 2019, 8:57:09 AM6/21/19
to syzkaller-upst...@googlegroups.com
Hello,
syzbot found the following crash on:
HEAD commit: dca73a65 Merge git://git.kernel.org/pub/scm/linux/kernel/g..
git tree: net-next
console output: https://syzkaller.appspot.com/x/log.txt?x=11ce0bc6a00000
kernel config: https://syzkaller.appspot.com/x/.config?x=4937094fc643655f
dashboard link: https://syzkaller.appspot.com/bug?extid=1a23748d7d3f5ab77565
compiler: gcc (GCC) 9.0.0 20181231 (experimental)
CC: [aarc...@redhat.com ak...@linux-foundation.org
chri...@brauner.io ebie...@xmission.com elena.r...@intel.com
gu...@fb.com kees...@chromium.org linux-...@vger.kernel.org
lu...@amacapital.net mho...@suse.com mi...@kernel.org na...@vmware.com
pet...@infradead.org ri...@surriel.com w...@chromium.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+1a2374...@syzkaller.appspotmail.com
kasan: CONFIG_KASAN_INLINE enabled
kasan: GPF could be caused by NULL-ptr deref or user memory access
general protection fault: 0000 [#1] PREEMPT SMP KASAN
CPU: 1 PID: 8910 Comm: udevd Not tainted 5.2.0-rc5+ #40
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS
Google 01/01/2011
RIP: 0010:find_matching_se kernel/sched/fair.c:414 [inline]
RIP: 0010:check_preempt_wakeup+0x26f/0x890 kernel/sched/fair.c:6937
Code: 00 00 4d 8b 84 24 58 01 00 00 41 39 c7 7d 5a 48 be 00 00 00 00 00 fc
ff df 48 8d bb 50 01 00 00 83 e8 01 48 89 f9 48 c1 e9 03 <80> 3c 31 00 0f
85 20 04 00 00 41 39 c7 48 8b 9b 50 01 00 00 75 d9
RSP: 0018:ffff88806551fc48 EFLAGS: 00010002
RAX: 00000000fffffffe RBX: 0000000000000000 RCX: 000000000000002a
RDX: 0000000000000002 RSI: dffffc0000000000 RDI: 0000000000000150
RBP: ffff88806551fc90 R08: ffff8881298b07ad R09: 1ffff1100cfae4d9
R10: ffffed1015484ea9 R11: ffff8880aa42754b R12: ffff8880a98b02c0
R13: ffff8880a98b0240 R14: ffff8880ae835500 R15: 00000000871c2048
FS: 00007f3e2b69a7a0(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f3e2b6a1000 CR3: 000000008cac7000 CR4: 00000000001406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
check_preempt_curr+0x1e1/0x390 kernel/sched/core.c:894
wake_up_new_task+0x53d/0xbc0 kernel/sched/core.c:2413
_do_fork+0x357/0xfe0 kernel/fork.c:2394
__do_sys_clone kernel/fork.c:2476 [inline]
__se_sys_clone kernel/fork.c:2470 [inline]
__x64_sys_clone+0xbf/0x150 kernel/fork.c:2470
do_syscall_64+0xfd/0x680 arch/x86/entry/common.c:301
entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x7f3e2ad7df46
Code: f7 d8 64 89 04 25 d4 02 00 00 64 4c 8b 14 25 10 00 00 00 31 d2 49 81
c2 d0 02 00 00 31 f6 bf 11 00 20 01 b8 38 00 00 00 0f 05 <48> 3d 00 f0 ff
ff 0f 87 31 01 00 00 85 c0 41 89 c4 0f 85 3b 01 00
RSP: 002b:00007fff74f20d10 EFLAGS: 00000246 ORIG_RAX: 0000000000000038
RAX: ffffffffffffffda RBX: 00007fff74f20d10 RCX: 00007f3e2ad7df46
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000001200011
RBP: 00007fff74f20d70 R08: 00000000000022ce R09: 00000000000022ce
R10: 00007f3e2b69aa70 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fff74f20d30 R14: 0000000000000005 R15: 0000000000000005
Modules linked in:
---[ end trace 6939b7d1f903d94a ]---
RIP: 0010:find_matching_se kernel/sched/fair.c:414 [inline]
RIP: 0010:check_preempt_wakeup+0x26f/0x890 kernel/sched/fair.c:6937
Code: 00 00 4d 8b 84 24 58 01 00 00 41 39 c7 7d 5a 48 be 00 00 00 00 00 fc
ff df 48 8d bb 50 01 00 00 83 e8 01 48 89 f9 48 c1 e9 03 <80> 3c 31 00 0f
85 20 04 00 00 41 39 c7 48 8b 9b 50 01 00 00 75 d9
RSP: 0018:ffff88806551fc48 EFLAGS: 00010002
RAX: 00000000fffffffe RBX: 0000000000000000 RCX: 000000000000002a
RDX: 0000000000000002 RSI: dffffc0000000000 RDI: 0000000000000150
RBP: ffff88806551fc90 R08: ffff8881298b07ad R09: 1ffff1100cfae4d9
R10: ffffed1015484ea9 R11: ffff8880aa42754b R12: ffff8880a98b02c0
R13: ffff8880a98b0240 R14: ffff8880ae835500 R15: 00000000871c2048
FS: 00007f3e2b69a7a0(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f3e2b6a1000 CR3: 000000008cac7000 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: dca73a65 Merge git://git.kernel.org/pub/scm/linux/kernel/g..
git tree: net-next
console output: https://syzkaller.appspot.com/x/log.txt?x=11ce0bc6a00000
kernel config: https://syzkaller.appspot.com/x/.config?x=4937094fc643655f
dashboard link: https://syzkaller.appspot.com/bug?extid=1a23748d7d3f5ab77565
compiler: gcc (GCC) 9.0.0 20181231 (experimental)
CC: [aarc...@redhat.com ak...@linux-foundation.org
chri...@brauner.io ebie...@xmission.com elena.r...@intel.com
gu...@fb.com kees...@chromium.org linux-...@vger.kernel.org
lu...@amacapital.net mho...@suse.com mi...@kernel.org na...@vmware.com
pet...@infradead.org ri...@surriel.com w...@chromium.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+1a2374...@syzkaller.appspotmail.com
kasan: CONFIG_KASAN_INLINE enabled
kasan: GPF could be caused by NULL-ptr deref or user memory access
general protection fault: 0000 [#1] PREEMPT SMP KASAN
CPU: 1 PID: 8910 Comm: udevd Not tainted 5.2.0-rc5+ #40
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS
Google 01/01/2011
RIP: 0010:find_matching_se kernel/sched/fair.c:414 [inline]
RIP: 0010:check_preempt_wakeup+0x26f/0x890 kernel/sched/fair.c:6937
Code: 00 00 4d 8b 84 24 58 01 00 00 41 39 c7 7d 5a 48 be 00 00 00 00 00 fc
ff df 48 8d bb 50 01 00 00 83 e8 01 48 89 f9 48 c1 e9 03 <80> 3c 31 00 0f
85 20 04 00 00 41 39 c7 48 8b 9b 50 01 00 00 75 d9
RSP: 0018:ffff88806551fc48 EFLAGS: 00010002
RAX: 00000000fffffffe RBX: 0000000000000000 RCX: 000000000000002a
RDX: 0000000000000002 RSI: dffffc0000000000 RDI: 0000000000000150
RBP: ffff88806551fc90 R08: ffff8881298b07ad R09: 1ffff1100cfae4d9
R10: ffffed1015484ea9 R11: ffff8880aa42754b R12: ffff8880a98b02c0
R13: ffff8880a98b0240 R14: ffff8880ae835500 R15: 00000000871c2048
FS: 00007f3e2b69a7a0(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f3e2b6a1000 CR3: 000000008cac7000 CR4: 00000000001406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
check_preempt_curr+0x1e1/0x390 kernel/sched/core.c:894
wake_up_new_task+0x53d/0xbc0 kernel/sched/core.c:2413
_do_fork+0x357/0xfe0 kernel/fork.c:2394
__do_sys_clone kernel/fork.c:2476 [inline]
__se_sys_clone kernel/fork.c:2470 [inline]
__x64_sys_clone+0xbf/0x150 kernel/fork.c:2470
do_syscall_64+0xfd/0x680 arch/x86/entry/common.c:301
entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x7f3e2ad7df46
Code: f7 d8 64 89 04 25 d4 02 00 00 64 4c 8b 14 25 10 00 00 00 31 d2 49 81
c2 d0 02 00 00 31 f6 bf 11 00 20 01 b8 38 00 00 00 0f 05 <48> 3d 00 f0 ff
ff 0f 87 31 01 00 00 85 c0 41 89 c4 0f 85 3b 01 00
RSP: 002b:00007fff74f20d10 EFLAGS: 00000246 ORIG_RAX: 0000000000000038
RAX: ffffffffffffffda RBX: 00007fff74f20d10 RCX: 00007f3e2ad7df46
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000001200011
RBP: 00007fff74f20d70 R08: 00000000000022ce R09: 00000000000022ce
R10: 00007f3e2b69aa70 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fff74f20d30 R14: 0000000000000005 R15: 0000000000000005
Modules linked in:
---[ end trace 6939b7d1f903d94a ]---
RIP: 0010:find_matching_se kernel/sched/fair.c:414 [inline]
RIP: 0010:check_preempt_wakeup+0x26f/0x890 kernel/sched/fair.c:6937
Code: 00 00 4d 8b 84 24 58 01 00 00 41 39 c7 7d 5a 48 be 00 00 00 00 00 fc
ff df 48 8d bb 50 01 00 00 83 e8 01 48 89 f9 48 c1 e9 03 <80> 3c 31 00 0f
85 20 04 00 00 41 39 c7 48 8b 9b 50 01 00 00 75 d9
RSP: 0018:ffff88806551fc48 EFLAGS: 00010002
RAX: 00000000fffffffe RBX: 0000000000000000 RCX: 000000000000002a
RDX: 0000000000000002 RSI: dffffc0000000000 RDI: 0000000000000150
RBP: ffff88806551fc90 R08: ffff8881298b07ad R09: 1ffff1100cfae4d9
R10: ffffed1015484ea9 R11: ffff8880aa42754b R12: ffff8880a98b02c0
R13: ffff8880a98b0240 R14: ffff8880ae835500 R15: 00000000871c2048
FS: 00007f3e2b69a7a0(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f3e2b6a1000 CR3: 000000008cac7000 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
Jan 14, 2020, 9:47:08 AM1/14/20
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.
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