INFO: task syz-executor.1:10088 blocked for more than 143 seconds.
Not tainted 5.11.0-rc1-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.1 state:D stack:28552 pid:10088 ppid: 8487 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:4313 [inline]
__schedule+0x90c/0x21a0 kernel/sched/core.c:5064
schedule+0xcf/0x270 kernel/sched/core.c:5143
rwsem_down_read_slowpath+0x4ca/0x980 kernel/locking/rwsem.c:992
__down_read_common kernel/locking/rwsem.c:1213 [inline]
__down_read kernel/locking/rwsem.c:1222 [inline]
down_read+0xdf/0x440 kernel/locking/rwsem.c:1355
inode_lock_shared include/linux/fs.h:783 [inline]
lookup_slow fs/namei.c:1560 [inline]
walk_component+0x409/0x6a0 fs/namei.c:1861
lookup_last fs/namei.c:2312 [inline]
path_lookupat+0x1ba/0x830 fs/namei.c:2336
filename_lookup+0x19f/0x560 fs/namei.c:2369
user_path_at include/linux/namei.h:59 [inline]
path_setxattr+0x95/0x190 fs/xattr.c:567
__do_sys_lsetxattr fs/xattr.c:594 [inline]
__se_sys_lsetxattr fs/xattr.c:590 [inline]
__x64_sys_lsetxattr+0xbd/0x150 fs/xattr.c:590
do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46
entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x45e299
RSP: 002b:00007f23c640ec68 EFLAGS: 00000246 ORIG_RAX: 00000000000000bd
RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 000000000045e299
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000020002040
RBP: 000000000119c078 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000119c034
R13: 00007ffe614d4c1f R14: 00007f23c640f9c0 R15: 000000000119c034
INFO: task syz-executor.1:10110 blocked for more than 143 seconds.
Not tainted 5.11.0-rc1-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.1 state:D stack:27800 pid:10110 ppid: 8487 flags:0x00000004
Call Trace:
context_switch kernel/sched/core.c:4313 [inline]
__schedule+0x90c/0x21a0 kernel/sched/core.c:5064
schedule+0xcf/0x270 kernel/sched/core.c:5143
rwsem_down_write_slowpath+0x7e5/0x1200 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:2195
do_new_mount_fc fs/namespace.c:2821 [inline]
do_new_mount fs/namespace.c:2880 [inline]
path_mount+0x1787/0x20c0 fs/namespace.c:3208
do_mount fs/namespace.c:3221 [inline]
__do_sys_mount fs/namespace.c:3429 [inline]
__se_sys_mount fs/namespace.c:3406 [inline]
__x64_sys_mount+0x27f/0x300 fs/namespace.c:3406
do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46
entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x45e299
RSP: 002b:00007f23c63ccc68 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 000000000045e299
RDX: 0000000020002000 RSI: 00000000200042c0 RDI: 0000000000000000
RBP: 000000000119c1c8 R08: 0000000020002140 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000119c184
R13: 00007ffe614d4c1f R14: 00007f23c63cd9c0 R15: 000000000119c184
Showing all locks held in the system:
1 lock held by khungtaskd/1661:
#0: ffffffff8b363860 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x53/0x260 kernel/locking/lockdep.c:6254
1 lock held by in:imklog/8211:
#0: ffff888018c50370 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0xe9/0x100 fs/file.c:949
3 locks held by syz-executor.1/10081:
1 lock held by syz-executor.1/10088:
#0: ffff88806dcc8150 (&type->i_mutex_dir_key#9){++++}-{3:3}, at: inode_lock_shared include/linux/fs.h:783 [inline]
#0: ffff88806dcc8150 (&type->i_mutex_dir_key#9){++++}-{3:3}, at: lookup_slow fs/namei.c:1560 [inline]
#0: ffff88806dcc8150 (&type->i_mutex_dir_key#9){++++}-{3:3}, at: walk_component+0x409/0x6a0 fs/namei.c:1861
1 lock held by syz-executor.1/10110:
#0: ffff88806dcc8150 (&type->i_mutex_dir_key#9){++++}-{3:3}, at: inode_lock include/linux/fs.h:773 [inline]
#0: ffff88806dcc8150 (&type->i_mutex_dir_key#9){++++}-{3:3}, at: lock_mount+0x8a/0x2e0 fs/namespace.c:2195
=============================================
NMI backtrace for cpu 1
CPU: 1 PID: 1661 Comm: khungtaskd Not tainted 5.11.0-rc1-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+0x44/0xd7 lib/nmi_backtrace.c:105
nmi_trigger_cpumask_backtrace+0x1b3/0x230 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:146 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:209 [inline]
watchdog+0xd43/0xfa0 kernel/hung_task.c:294
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: 10081 Comm: syz-executor.1 Not tainted 5.11.0-rc1-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:lock_release+0x3d5/0x710 kernel/locking/lockdep.c:5445
Code: 15 02 00 00 48 c7 c7 80 a1 4b 89 e8 45 a4 92 07 b8 ff ff ff ff 65 0f c1 05 78 78 a9 7e 83 f8 01 0f 85 67 01 00 00 ff 34 24 9d <48> b8 00 00 00 00 00 fc ff df 48 01 c5 48 c7 45 00 00 00 00 00 c7
RSP: 0018:ffffc900171af900 EFLAGS: 00000246
RAX: 0000000000000001 RBX: 065743ade79ab60a RCX: ffffc900171af950
RDX: 1ffff11003ed812f RSI: 0000000000000001 RDI: 0000000000000000
RBP: 1ffff92002e35f22 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000000 R12: 0000000000000003
R13: 0000000000000004 R14: ffff88801f6c0980 R15: ffff88801f6c0000
FS: 00007f23c6430700(0000) GS:ffff8880b9e00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fa18300c000 CR3: 000000001d41c000 CR4: 0000000000350ef0
Call Trace:
__raw_spin_unlock include/linux/spinlock_api_smp.h:150 [inline]
_raw_spin_unlock+0x12/0x40 kernel/locking/spinlock.c:183
spin_unlock include/linux/spinlock.h:394 [inline]
ilookup5_nowait+0x7e/0xb0 fs/inode.c:1335
ilookup5 fs/inode.c:1363 [inline]
iget5_locked+0x41/0x220 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+0x70/0x90 fs/fuse/dir.c:465
__lookup_hash+0x117/0x180 fs/namei.c:1445
do_rmdir+0x245/0x440 fs/namei.c:3765
do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46
entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x45e299
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:00007f23c642fc68 EFLAGS: 00000246 ORIG_RAX: 0000000000000054
RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 000000000045e299
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 00000000200020c0
RBP: 000000000119bfb0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000119bf8c
R13: 00007ffe614d4c1f R14: 00007f23c64309c0 R15: 000000000119bf8c