INFO: task syz-executor.0:2997 can't die for more than 143 seconds.
task:syz-executor.0 state:D stack:26744 pid: 2997 ppid: 22353 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:4327 [inline]
__schedule+0x8eb/0x21b0 kernel/sched/core.c:5078
schedule+0xcf/0x270 kernel/sched/core.c:5157
rwsem_down_write_slowpath+0x809/0x1220 kernel/locking/rwsem.c:1106
__down_write_common kernel/locking/rwsem.c:1261 [inline]
__down_write_common kernel/locking/rwsem.c:1258 [inline]
__down_write kernel/locking/rwsem.c:1270 [inline]
down_write+0x132/0x150 kernel/locking/rwsem.c:1407
inode_lock include/linux/fs.h:773 [inline]
lock_mount+0x8a/0x2e0 fs/namespace.c:2211
do_new_mount_fc fs/namespace.c:2839 [inline]
do_new_mount fs/namespace.c:2898 [inline]
path_mount+0x1678/0x1e70 fs/namespace.c:3227
do_mount fs/namespace.c:3240 [inline]
__do_sys_mount fs/namespace.c:3448 [inline]
__se_sys_mount fs/namespace.c:3425 [inline]
__x64_sys_mount+0x27f/0x300 fs/namespace.c:3425
do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46
entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x45e159
RSP: 002b:00007f0024642c68 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 000000000045e159
RDX: 0000000020002000 RSI: 00000000200042c0 RDI: 0000000000000000
RBP: 000000000119bfd0 R08: 0000000020002140 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000119bf8c
R13: 00007fff1febfd7f R14: 00007f00246439c0 R15: 000000000119bf8c
INFO: task syz-executor.0:2997 blocked for more than 143 seconds.
Not tainted 5.10.0-next-20201215-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.0 state:D stack:26744 pid: 2997 ppid: 22353 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:4327 [inline]
__schedule+0x8eb/0x21b0 kernel/sched/core.c:5078
schedule+0xcf/0x270 kernel/sched/core.c:5157
rwsem_down_write_slowpath+0x809/0x1220 kernel/locking/rwsem.c:1106
__down_write_common kernel/locking/rwsem.c:1261 [inline]
__down_write_common kernel/locking/rwsem.c:1258 [inline]
__down_write kernel/locking/rwsem.c:1270 [inline]
down_write+0x132/0x150 kernel/locking/rwsem.c:1407
inode_lock include/linux/fs.h:773 [inline]
lock_mount+0x8a/0x2e0 fs/namespace.c:2211
do_new_mount_fc fs/namespace.c:2839 [inline]
do_new_mount fs/namespace.c:2898 [inline]
path_mount+0x1678/0x1e70 fs/namespace.c:3227
do_mount fs/namespace.c:3240 [inline]
__do_sys_mount fs/namespace.c:3448 [inline]
__se_sys_mount fs/namespace.c:3425 [inline]
__x64_sys_mount+0x27f/0x300 fs/namespace.c:3425
do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46
entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x45e159
RSP: 002b:00007f0024642c68 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 000000000045e159
RDX: 0000000020002000 RSI: 00000000200042c0 RDI: 0000000000000000
RBP: 000000000119bfd0 R08: 0000000020002140 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000119bf8c
R13: 00007fff1febfd7f R14: 00007f00246439c0 R15: 000000000119bf8c
INFO: task syz-executor.0:3005 can't die for more than 144 seconds.
task:syz-executor.0 state:R running task stack:27168 pid: 3005 ppid: 22353 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:4327 [inline]
__schedule+0x8eb/0x21b0 kernel/sched/core.c:5078
Showing all locks held in the system:
1 lock held by khungtaskd/1664:
#0: ffffffff8b78f920 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x53/0x28c kernel/locking/lockdep.c:6254
1 lock held by systemd-journal/4905:
1 lock held by in:imklog/8185:
#0: ffff888022141270 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0xe9/0x100 fs/file.c:923
5 locks held by kworker/0:5/9808:
1 lock held by syz-executor.0/2997:
#0: ffff888075fa8ed0 (&type->i_mutex_dir_key#8){++++}-{3:3}, at: inode_lock include/linux/fs.h:773 [inline]
#0: ffff888075fa8ed0 (&type->i_mutex_dir_key#8){++++}-{3:3}, at: lock_mount+0x8a/0x2e0 fs/namespace.c:2211
2 locks held by syz-executor.0/3005:
=============================================
NMI backtrace for cpu 1
CPU: 1 PID: 1664 Comm: khungtaskd Not tainted 5.10.0-next-20201215-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
__dump_stack lib/dump_stack.c:79 [inline]
dump_stack+0x107/0x163 lib/dump_stack.c:120
nmi_cpu_backtrace.cold+0x3c/0xef lib/nmi_backtrace.c:105
nmi_trigger_cpumask_backtrace+0x1b3/0x230 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:147 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:253 [inline]
watchdog+0xe75/0x1020 kernel/hung_task.c:338
kthread+0x3b1/0x4a0 kernel/kthread.c:292
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:296
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 3005 Comm: syz-executor.0 Not tainted 5.10.0-next-20201215-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:task_irq_context kernel/locking/lockdep.c:4341 [inline]
RIP: 0010:__lock_acquire+0x308/0x54b0 kernel/locking/lockdep.c:4770
Code: 48 8d b5 74 09 00 00 48 ba 00 00 00 00 00 fc ff df 48 89 f1 48 89 74 24 38 49 89 44 24 18 65 8b 05 85 47 aa 7e 85 c0 0f 95 c0 <48> c1 e9 03 83 e6 07 0f b6 0c 11 48 89 f2 0f b6 c0 83 c2 03 01 c0
RSP: 0018:ffffc90001b9f2c8 EFLAGS: 00000046
RAX: 0000000000000000 RBX: 0000000000000001 RCX: ffff888070030974
RDX: dffffc0000000000 RSI: ffff888070030974 RDI: ffff8880700309f0
RBP: ffff888070030000 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000050 R11: 0000000000000000 R12: ffff8880700309e0
R13: 0000000000000000 R14: ffffffff8b4146d8 R15: 0000000000000000
FS: 00007f0024601700(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fea940ec000 CR3: 0000000027a47000 CR4: 00000000001506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
lock_acquire kernel/locking/lockdep.c:5437 [inline]
lock_acquire+0x29d/0x750 kernel/locking/lockdep.c:5402
__raw_spin_lock include/linux/spinlock_api_smp.h:142 [inline]
_raw_spin_lock+0x2a/0x40 kernel/locking/spinlock.c:151
spin_lock include/linux/spinlock.h:354 [inline]
ilookup5_nowait fs/inode.c:1333 [inline]
ilookup5 fs/inode.c:1363 [inline]
iget5_locked+0xac/0x2d0 fs/inode.c:1144
fuse_iget+0x271/0x610 fs/fuse/inode.c:342
fuse_lookup_name+0x447/0x630 fs/fuse/dir.c:439
fuse_lookup.part.0+0xdf/0x390 fs/fuse/dir.c:469
fuse_lookup fs/fuse/dir.c:465 [inline]
fuse_atomic_open+0x2de/0x440 fs/fuse/dir.c:621
atomic_open fs/namei.c:2970 [inline]
lookup_open.isra.0+0xc3d/0x13d0 fs/namei.c:3076
open_last_lookups fs/namei.c:3178 [inline]
path_openat+0x9af/0x27a0 fs/namei.c:3366
do_filp_open+0x17e/0x3c0 fs/namei.c:3396
do_sys_openat2+0x16d/0x420 fs/open.c:1172
do_sys_open fs/open.c:1188 [inline]
__do_sys_openat fs/open.c:1204 [inline]
__se_sys_openat fs/open.c:1199 [inline]
__x64_sys_openat+0x13f/0x1f0 fs/open.c:1199
do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46
entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x45e159
Code: 0d b4 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 db b3 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007f0024600c68 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 000000000045e159
RDX: 0000000000000000 RSI: 0000000020002040 RDI: ffffffffffffff9c
RBP: 000000000119c118 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000119c0dc
R13: 00007fff1febfd7f R14: 00007f00246019c0 R15: 000000000119c0dc