INFO: task hung in flush_to_ldisc (3)
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syzbot
Apr 26, 2021, 8:39:21 PM4/26/21
to syzkaller...@googlegroups.com
Hello,
syzbot found the following issue on:
HEAD commit: 2965db2e Linux 4.19.188
git tree: linux-4.19.y
console output: https://syzkaller.appspot.com/x/log.txt?x=133852b9d00000
kernel config: https://syzkaller.appspot.com/x/.config?x=66e717310a9b0f81
dashboard link: https://syzkaller.appspot.com/bug?extid=a92cf3dde205af194b86
Unfortunately, I don't have any reproducer for this issue yet.
IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+a92cf3...@syzkaller.appspotmail.com
Bluetooth: hci4: command 0x0406 tx timeout
ieee802154 phy0 wpan0: encryption failed: -22
ieee802154 phy1 wpan1: encryption failed: -22
ieee802154 phy0 wpan0: encryption failed: -22
ieee802154 phy1 wpan1: encryption failed: -22
INFO: task kworker/u4:0:7 blocked for more than 140 seconds.
Not tainted 4.19.188-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
kworker/u4:0 D27168 7 2 0x80000000
Workqueue: events_unbound flush_to_ldisc
Call Trace:
context_switch kernel/sched/core.c:2828 [inline]
__schedule+0x887/0x2040 kernel/sched/core.c:3517
schedule+0x8d/0x1b0 kernel/sched/core.c:3561
schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:3619
__mutex_lock_common kernel/locking/mutex.c:1005 [inline]
__mutex_lock+0x647/0x1260 kernel/locking/mutex.c:1075
flush_to_ldisc+0x3e/0x390 drivers/tty/tty_buffer.c:500
process_one_work+0x864/0x1570 kernel/workqueue.c:2152
worker_thread+0x64c/0x1130 kernel/workqueue.c:2295
kthread+0x33f/0x460 kernel/kthread.c:259
ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415
INFO: task syz-executor.2:17234 blocked for more than 140 seconds.
Not tainted 4.19.188-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
syz-executor.2 D29240 17234 8144 0x00000004
Call Trace:
context_switch kernel/sched/core.c:2828 [inline]
__schedule+0x887/0x2040 kernel/sched/core.c:3517
schedule+0x8d/0x1b0 kernel/sched/core.c:3561
schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:3619
__mutex_lock_common kernel/locking/mutex.c:1005 [inline]
__mutex_lock+0x647/0x1260 kernel/locking/mutex.c:1075
paste_selection+0x125/0x470 drivers/tty/vt/selection.c:372
tioclinux+0x122/0x510 drivers/tty/vt/vt.c:3054
vt_ioctl+0x163e/0x2380 drivers/tty/vt/vt_ioctl.c:372
tty_ioctl+0x5b0/0x15c0 drivers/tty/tty_io.c:2669
vfs_ioctl fs/ioctl.c:46 [inline]
file_ioctl fs/ioctl.c:501 [inline]
do_vfs_ioctl+0xcdb/0x12e0 fs/ioctl.c:688
ksys_ioctl+0x9b/0xc0 fs/ioctl.c:705
__do_sys_ioctl fs/ioctl.c:712 [inline]
__se_sys_ioctl fs/ioctl.c:710 [inline]
__x64_sys_ioctl+0x6f/0xb0 fs/ioctl.c:710
do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293
entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x4665f9
Code: Bad RIP value.
RSP: 002b:00007fd2d3d6e188 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 000000000056bf60 RCX: 00000000004665f9
RDX: 0000000020000040 RSI: 000000000000541c RDI: 0000000000000003
RBP: 00000000004bfce1 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000056bf60
R13: 00007fff664b94ef R14: 00007fd2d3d6e300 R15: 0000000000022000
INFO: task syz-executor.2:17237 blocked for more than 140 seconds.
Not tainted 4.19.188-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
syz-executor.2 D29240 17237 8144 0x00000004
Call Trace:
context_switch kernel/sched/core.c:2828 [inline]
__schedule+0x887/0x2040 kernel/sched/core.c:3517
schedule+0x8d/0x1b0 kernel/sched/core.c:3561
schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:3619
__mutex_lock_common kernel/locking/mutex.c:1005 [inline]
__mutex_lock+0x647/0x1260 kernel/locking/mutex.c:1075
paste_selection+0x125/0x470 drivers/tty/vt/selection.c:372
tioclinux+0x122/0x510 drivers/tty/vt/vt.c:3054
vt_ioctl+0x163e/0x2380 drivers/tty/vt/vt_ioctl.c:372
tty_ioctl+0x5b0/0x15c0 drivers/tty/tty_io.c:2669
vfs_ioctl fs/ioctl.c:46 [inline]
file_ioctl fs/ioctl.c:501 [inline]
do_vfs_ioctl+0xcdb/0x12e0 fs/ioctl.c:688
ksys_ioctl+0x9b/0xc0 fs/ioctl.c:705
__do_sys_ioctl fs/ioctl.c:712 [inline]
__se_sys_ioctl fs/ioctl.c:710 [inline]
__x64_sys_ioctl+0x6f/0xb0 fs/ioctl.c:710
do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293
entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x4665f9
Code: Bad RIP value.
RSP: 002b:00007fd2d3d4d188 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 000000000056c008 RCX: 00000000004665f9
RDX: 0000000020000040 RSI: 000000000000541c RDI: 0000000000000003
RBP: 00000000004bfce1 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000056c008
R13: 00007fff664b94ef R14: 00007fd2d3d4d300 R15: 0000000000022000
Showing all locks held in the system:
3 locks held by kworker/u4:0/7:
#0: 0000000021a1cc83 ((wq_completion)"events_unbound"){+.+.}, at: process_one_work+0x767/0x1570 kernel/workqueue.c:2123
#1: 000000009d0a59f3 ((work_completion)(&buf->work)){+.+.}, at: process_one_work+0x79c/0x1570 kernel/workqueue.c:2127
#2: 0000000057f781ba (&buf->lock){+.+.}, at: flush_to_ldisc+0x3e/0x390 drivers/tty/tty_buffer.c:500
1 lock held by khungtaskd/1569:
#0: 0000000074dd28c1 (rcu_read_lock){....}, at: debug_show_all_locks+0x53/0x265 kernel/locking/lockdep.c:4440
2 locks held by agetty/7855:
#0: 000000005432b280 (&tty->legacy_mutex){+.+.}, at: tty_lock+0x6a/0xa0 drivers/tty/tty_mutex.c:19
#1: 00000000188d157d (&tty->ldisc_sem){++++}, at: __tty_ldisc_lock drivers/tty/tty_ldisc.c:320 [inline]
#1: 00000000188d157d (&tty->ldisc_sem){++++}, at: tty_ldisc_lock+0x4d/0x90 drivers/tty/tty_ldisc.c:344
2 locks held by syz-executor.4/17179:
#0: 00000000188d157d (&tty->ldisc_sem){++++}, at: tty_ldisc_ref_wait+0x22/0x80 drivers/tty/tty_ldisc.c:272
#1: 0000000057f781ba (&buf->lock){+.+.}, at: paste_selection+0x125/0x470 drivers/tty/vt/selection.c:372
2 locks held by syz-executor.2/17234:
#0: 00000000188d157d (&tty->ldisc_sem){++++}, at: tty_ldisc_ref_wait+0x22/0x80 drivers/tty/tty_ldisc.c:272
#1: 0000000057f781ba (&buf->lock){+.+.}, at: paste_selection+0x125/0x470 drivers/tty/vt/selection.c:372
2 locks held by syz-executor.2/17237:
#0: 00000000188d157d (&tty->ldisc_sem){++++}, at: tty_ldisc_ref_wait+0x22/0x80 drivers/tty/tty_ldisc.c:272
#1: 0000000057f781ba (&buf->lock){+.+.}, at: paste_selection+0x125/0x470 drivers/tty/vt/selection.c:372
=============================================
NMI backtrace for cpu 1
CPU: 1 PID: 1569 Comm: khungtaskd Not tainted 4.19.188-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
__dump_stack lib/dump_stack.c:77 [inline]
dump_stack+0x1fc/0x2ef lib/dump_stack.c:118
nmi_cpu_backtrace.cold+0x63/0xa2 lib/nmi_backtrace.c:101
nmi_trigger_cpumask_backtrace+0x1a6/0x1f0 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:146 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:203 [inline]
watchdog+0x991/0xe60 kernel/hung_task.c:287
kthread+0x33f/0x460 kernel/kthread.c:259
ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 4682 Comm: systemd-journal Not tainted 4.19.188-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:free_uid+0x0/0x230 kernel/user.c:166
Code: 5d 41 5c 41 5d c3 e8 6f a8 5d 00 e9 75 ff ff ff e8 f5 a8 5d 00 eb 9b e8 1e 2f fd ff 66 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 <41> 56 41 55 49 bd 00 00 00 00 00 fc ff df 41 54 55 48 89 fd 53 48
RSP: 0018:ffff8880a154fe18 EFLAGS: 00000246
RAX: dffffc0000000000 RBX: ffff8880b2a212a8 RCX: ffffffff813fe8cf
RDX: 1ffff11016544252 RSI: ffffffff813fe8dd RDI: ffffffff89f50220
RBP: ffff8880b2a21200 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000000 R12: ffffffff89f5aa00
R13: ffff8880b2a212a0 R14: 0000000000000000 R15: 0000000000000000
FS: 00007f7317c9b8c0(0000) GS:ffff8880ba000000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f73150e0000 CR3: 00000000a1a74000 CR4: 00000000001406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
put_cred_rcu+0x245/0x4a0 kernel/cred.c:124
__put_cred+0x1de/0x250 kernel/cred.c:151
put_cred include/linux/cred.h:276 [inline]
do_faccessat+0x64e/0x7a0 fs/open.c:438
do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293
entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x7f7316f569c7
Code: 83 c4 08 48 3d 01 f0 ff ff 73 01 c3 48 8b 0d c8 d4 2b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 0f 1f 44 00 00 b8 15 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d a1 d4 2b 00 f7 d8 64 89 01 48
RSP: 002b:00007ffd2ccbe278 EFLAGS: 00000246 ORIG_RAX: 0000000000000015
RAX: ffffffffffffffda RBX: 00007ffd2ccc1190 RCX: 00007f7316f569c7
RDX: 00007f73179c7a00 RSI: 0000000000000000 RDI: 000056262f5de9a3
RBP: 00007ffd2ccbe2b0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000069 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007ffd2ccc1190 R15: 00007ffd2ccbe7a0
---
This report 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 issue. See:
https://goo.gl/tpsmEJ#status for how to communicate with syzbot.
syzbot found the following issue on:
HEAD commit: 2965db2e Linux 4.19.188
git tree: linux-4.19.y
console output: https://syzkaller.appspot.com/x/log.txt?x=133852b9d00000
kernel config: https://syzkaller.appspot.com/x/.config?x=66e717310a9b0f81
dashboard link: https://syzkaller.appspot.com/bug?extid=a92cf3dde205af194b86
Unfortunately, I don't have any reproducer for this issue yet.
IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+a92cf3...@syzkaller.appspotmail.com
Bluetooth: hci4: command 0x0406 tx timeout
ieee802154 phy0 wpan0: encryption failed: -22
ieee802154 phy1 wpan1: encryption failed: -22
ieee802154 phy0 wpan0: encryption failed: -22
ieee802154 phy1 wpan1: encryption failed: -22
INFO: task kworker/u4:0:7 blocked for more than 140 seconds.
Not tainted 4.19.188-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
kworker/u4:0 D27168 7 2 0x80000000
Workqueue: events_unbound flush_to_ldisc
Call Trace:
context_switch kernel/sched/core.c:2828 [inline]
__schedule+0x887/0x2040 kernel/sched/core.c:3517
schedule+0x8d/0x1b0 kernel/sched/core.c:3561
schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:3619
__mutex_lock_common kernel/locking/mutex.c:1005 [inline]
__mutex_lock+0x647/0x1260 kernel/locking/mutex.c:1075
flush_to_ldisc+0x3e/0x390 drivers/tty/tty_buffer.c:500
process_one_work+0x864/0x1570 kernel/workqueue.c:2152
worker_thread+0x64c/0x1130 kernel/workqueue.c:2295
kthread+0x33f/0x460 kernel/kthread.c:259
ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415
INFO: task syz-executor.2:17234 blocked for more than 140 seconds.
Not tainted 4.19.188-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
syz-executor.2 D29240 17234 8144 0x00000004
Call Trace:
context_switch kernel/sched/core.c:2828 [inline]
__schedule+0x887/0x2040 kernel/sched/core.c:3517
schedule+0x8d/0x1b0 kernel/sched/core.c:3561
schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:3619
__mutex_lock_common kernel/locking/mutex.c:1005 [inline]
__mutex_lock+0x647/0x1260 kernel/locking/mutex.c:1075
paste_selection+0x125/0x470 drivers/tty/vt/selection.c:372
tioclinux+0x122/0x510 drivers/tty/vt/vt.c:3054
vt_ioctl+0x163e/0x2380 drivers/tty/vt/vt_ioctl.c:372
tty_ioctl+0x5b0/0x15c0 drivers/tty/tty_io.c:2669
vfs_ioctl fs/ioctl.c:46 [inline]
file_ioctl fs/ioctl.c:501 [inline]
do_vfs_ioctl+0xcdb/0x12e0 fs/ioctl.c:688
ksys_ioctl+0x9b/0xc0 fs/ioctl.c:705
__do_sys_ioctl fs/ioctl.c:712 [inline]
__se_sys_ioctl fs/ioctl.c:710 [inline]
__x64_sys_ioctl+0x6f/0xb0 fs/ioctl.c:710
do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293
entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x4665f9
Code: Bad RIP value.
RSP: 002b:00007fd2d3d6e188 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 000000000056bf60 RCX: 00000000004665f9
RDX: 0000000020000040 RSI: 000000000000541c RDI: 0000000000000003
RBP: 00000000004bfce1 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000056bf60
R13: 00007fff664b94ef R14: 00007fd2d3d6e300 R15: 0000000000022000
INFO: task syz-executor.2:17237 blocked for more than 140 seconds.
Not tainted 4.19.188-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
syz-executor.2 D29240 17237 8144 0x00000004
Call Trace:
context_switch kernel/sched/core.c:2828 [inline]
__schedule+0x887/0x2040 kernel/sched/core.c:3517
schedule+0x8d/0x1b0 kernel/sched/core.c:3561
schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:3619
__mutex_lock_common kernel/locking/mutex.c:1005 [inline]
__mutex_lock+0x647/0x1260 kernel/locking/mutex.c:1075
paste_selection+0x125/0x470 drivers/tty/vt/selection.c:372
tioclinux+0x122/0x510 drivers/tty/vt/vt.c:3054
vt_ioctl+0x163e/0x2380 drivers/tty/vt/vt_ioctl.c:372
tty_ioctl+0x5b0/0x15c0 drivers/tty/tty_io.c:2669
vfs_ioctl fs/ioctl.c:46 [inline]
file_ioctl fs/ioctl.c:501 [inline]
do_vfs_ioctl+0xcdb/0x12e0 fs/ioctl.c:688
ksys_ioctl+0x9b/0xc0 fs/ioctl.c:705
__do_sys_ioctl fs/ioctl.c:712 [inline]
__se_sys_ioctl fs/ioctl.c:710 [inline]
__x64_sys_ioctl+0x6f/0xb0 fs/ioctl.c:710
do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293
entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x4665f9
Code: Bad RIP value.
RSP: 002b:00007fd2d3d4d188 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 000000000056c008 RCX: 00000000004665f9
RDX: 0000000020000040 RSI: 000000000000541c RDI: 0000000000000003
RBP: 00000000004bfce1 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000056c008
R13: 00007fff664b94ef R14: 00007fd2d3d4d300 R15: 0000000000022000
Showing all locks held in the system:
3 locks held by kworker/u4:0/7:
#0: 0000000021a1cc83 ((wq_completion)"events_unbound"){+.+.}, at: process_one_work+0x767/0x1570 kernel/workqueue.c:2123
#1: 000000009d0a59f3 ((work_completion)(&buf->work)){+.+.}, at: process_one_work+0x79c/0x1570 kernel/workqueue.c:2127
#2: 0000000057f781ba (&buf->lock){+.+.}, at: flush_to_ldisc+0x3e/0x390 drivers/tty/tty_buffer.c:500
1 lock held by khungtaskd/1569:
#0: 0000000074dd28c1 (rcu_read_lock){....}, at: debug_show_all_locks+0x53/0x265 kernel/locking/lockdep.c:4440
2 locks held by agetty/7855:
#0: 000000005432b280 (&tty->legacy_mutex){+.+.}, at: tty_lock+0x6a/0xa0 drivers/tty/tty_mutex.c:19
#1: 00000000188d157d (&tty->ldisc_sem){++++}, at: __tty_ldisc_lock drivers/tty/tty_ldisc.c:320 [inline]
#1: 00000000188d157d (&tty->ldisc_sem){++++}, at: tty_ldisc_lock+0x4d/0x90 drivers/tty/tty_ldisc.c:344
2 locks held by syz-executor.4/17179:
#0: 00000000188d157d (&tty->ldisc_sem){++++}, at: tty_ldisc_ref_wait+0x22/0x80 drivers/tty/tty_ldisc.c:272
#1: 0000000057f781ba (&buf->lock){+.+.}, at: paste_selection+0x125/0x470 drivers/tty/vt/selection.c:372
2 locks held by syz-executor.2/17234:
#0: 00000000188d157d (&tty->ldisc_sem){++++}, at: tty_ldisc_ref_wait+0x22/0x80 drivers/tty/tty_ldisc.c:272
#1: 0000000057f781ba (&buf->lock){+.+.}, at: paste_selection+0x125/0x470 drivers/tty/vt/selection.c:372
2 locks held by syz-executor.2/17237:
#0: 00000000188d157d (&tty->ldisc_sem){++++}, at: tty_ldisc_ref_wait+0x22/0x80 drivers/tty/tty_ldisc.c:272
#1: 0000000057f781ba (&buf->lock){+.+.}, at: paste_selection+0x125/0x470 drivers/tty/vt/selection.c:372
=============================================
NMI backtrace for cpu 1
CPU: 1 PID: 1569 Comm: khungtaskd Not tainted 4.19.188-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
__dump_stack lib/dump_stack.c:77 [inline]
dump_stack+0x1fc/0x2ef lib/dump_stack.c:118
nmi_cpu_backtrace.cold+0x63/0xa2 lib/nmi_backtrace.c:101
nmi_trigger_cpumask_backtrace+0x1a6/0x1f0 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:146 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:203 [inline]
watchdog+0x991/0xe60 kernel/hung_task.c:287
kthread+0x33f/0x460 kernel/kthread.c:259
ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 4682 Comm: systemd-journal Not tainted 4.19.188-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:free_uid+0x0/0x230 kernel/user.c:166
Code: 5d 41 5c 41 5d c3 e8 6f a8 5d 00 e9 75 ff ff ff e8 f5 a8 5d 00 eb 9b e8 1e 2f fd ff 66 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 <41> 56 41 55 49 bd 00 00 00 00 00 fc ff df 41 54 55 48 89 fd 53 48
RSP: 0018:ffff8880a154fe18 EFLAGS: 00000246
RAX: dffffc0000000000 RBX: ffff8880b2a212a8 RCX: ffffffff813fe8cf
RDX: 1ffff11016544252 RSI: ffffffff813fe8dd RDI: ffffffff89f50220
RBP: ffff8880b2a21200 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000000 R12: ffffffff89f5aa00
R13: ffff8880b2a212a0 R14: 0000000000000000 R15: 0000000000000000
FS: 00007f7317c9b8c0(0000) GS:ffff8880ba000000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f73150e0000 CR3: 00000000a1a74000 CR4: 00000000001406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
put_cred_rcu+0x245/0x4a0 kernel/cred.c:124
__put_cred+0x1de/0x250 kernel/cred.c:151
put_cred include/linux/cred.h:276 [inline]
do_faccessat+0x64e/0x7a0 fs/open.c:438
do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293
entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x7f7316f569c7
Code: 83 c4 08 48 3d 01 f0 ff ff 73 01 c3 48 8b 0d c8 d4 2b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 0f 1f 44 00 00 b8 15 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d a1 d4 2b 00 f7 d8 64 89 01 48
RSP: 002b:00007ffd2ccbe278 EFLAGS: 00000246 ORIG_RAX: 0000000000000015
RAX: ffffffffffffffda RBX: 00007ffd2ccc1190 RCX: 00007f7316f569c7
RDX: 00007f73179c7a00 RSI: 0000000000000000 RDI: 000056262f5de9a3
RBP: 00007ffd2ccbe2b0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000069 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007ffd2ccc1190 R15: 00007ffd2ccbe7a0
---
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syzbot
Aug 24, 2021, 8:39:12 PM8/24/21
to syzkaller...@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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