INFO: task syz-executor.0:11615 blocked for more than 143 seconds.
Not tainted 5.11.0-rc3-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.0 state:D stack:28552 pid:11615 ppid: 8474 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_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
link_path_walk.part.0+0x703/0xc70 fs/namei.c:2186
link_path_walk fs/namei.c:2112 [inline]
path_lookupat+0xb7/0x830 fs/namei.c:2335
filename_lookup+0x19f/0x560 fs/namei.c:2369
user_path_at include/linux/namei.h:59 [inline]
do_mount fs/namespace.c:3218 [inline]
__do_sys_mount fs/namespace.c:3429 [inline]
__se_sys_mount fs/namespace.c:3406 [inline]
__x64_sys_mount+0x1ea/0x300 fs/namespace.c:3406
do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46
entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x45e219
RSP: 002b:00007f654e3abc68 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 000000000045e219
RDX: 0000000000000000 RSI: 0000000020000000 RDI: 0000000000000000
RBP: 000000000119c120 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000119c0dc
R13: 00007ffd9c235e4f R14: 00007f654e3ac9c0 R15: 000000000119c0dc
INFO: task syz-executor.0:11617 blocked for more than 143 seconds.
Not tainted 5.11.0-rc3-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.0 state:D stack:27808 pid:11617 ppid: 8474 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_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: 0033:0x45e219
RSP: 002b:00007f654e38ac68 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 000000000045e219
RDX: 0000000020002100 RSI: 00000000200020c0 RDI: 0000000000000000
RBP: 000000000119c1c8 R08: 0000000020002140 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000119c184
R13: 00007ffd9c235e4f R14: 00007f654e38b9c0 R15: 000000000119c184
Showing all locks held in the system:
1 lock held by khungtaskd/1658:
#0: ffffffff8b373920 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x53/0x260 kernel/locking/lockdep.c:6254
1 lock held by in:imklog/8156:
#0: ffff888011abbc70 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0xe9/0x100 fs/file.c:947
2 locks held by syz-executor.0/11582:
1 lock held by syz-executor.0/11615:
#0: ffff88807b3d0150 (&type->i_mutex_dir_key#8){++++}-{3:3}, at: inode_lock_shared include/linux/fs.h:783 [inline]
#0: ffff88807b3d0150 (&type->i_mutex_dir_key#8){++++}-{3:3}, at: lookup_slow fs/namei.c:1560 [inline]
#0: ffff88807b3d0150 (&type->i_mutex_dir_key#8){++++}-{3:3}, at: walk_component+0x409/0x6a0 fs/namei.c:1861
1 lock held by syz-executor.0/11617:
#0: ffff88807b3d0150 (&type->i_mutex_dir_key#8){++++}-{3:3}, at: inode_lock include/linux/fs.h:773 [inline]
#0: ffff88807b3d0150 (&type->i_mutex_dir_key#8){++++}-{3:3}, at: lock_mount+0x8a/0x2e0 fs/namespace.c:2195
=============================================
NMI backtrace for cpu 0
CPU: 0 PID: 1658 Comm: khungtaskd Not tainted 5.11.0-rc3-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 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 11582 Comm: syz-executor.0 Not tainted 5.11.0-rc3-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:hlock_class kernel/locking/lockdep.c:193 [inline]
RIP: 0010:mark_lock+0xc3/0x1720 kernel/locking/lockdep.c:4389
Code: 00 00 00 44 89 e1 41 d3 e5 4d 63 ed 48 8d 45 20 48 89 c2 48 89 44 24 08 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 0f b6 04 02 <84> c0 74 08 3c 03 0f 8e 8f 07 00 00 44 0f b7 75 20 66 41 81 e6 ff
RSP: 0018:ffffc900031cf1f8 EFLAGS: 00000016
RAX: 0000000000000000 RBX: 1ffff92000639e45 RCX: 0000000000000008
RDX: 1ffff110021e713f RSI: ffff888010f389d8 RDI: ffff888010f389fa
RBP: ffff888010f389d8 R08: 0000000000000000 R09: ffffffff8ed307f7
R10: fffffbfff1da60fe R11: 0000000000000001 R12: 0000000000000008
R13: 0000000000000100 R14: 0000000000000000 R15: ffff888010f38988
FS: 00007f654e3ee700(0000) GS:ffff8880b9f00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f1ac69f0000 CR3: 0000000013eea000 CR4: 0000000000350ee0
Call Trace:
mark_usage kernel/locking/lockdep.c:4332 [inline]
__lock_acquire+0x8bf/0x54f0 kernel/locking/lockdep.c:4786
lock_acquire kernel/locking/lockdep.c:5437 [inline]
lock_acquire+0x29d/0x740 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+0x70/0x90 fs/fuse/dir.c:465
__lookup_slow+0x24c/0x480 fs/namei.c:1544
lookup_slow fs/namei.c:1561 [inline]
walk_component+0x418/0x6a0 fs/namei.c:1861
link_path_walk.part.0+0x5a2/0xc70 fs/namei.c:2183
link_path_walk fs/namei.c:2112 [inline]
path_lookupat+0xb7/0x830 fs/namei.c:2335
filename_lookup+0x19f/0x560 fs/namei.c:2369
user_path_at include/linux/namei.h:59 [inline]
do_mount fs/namespace.c:3218 [inline]
__do_sys_mount fs/namespace.c:3429 [inline]
__se_sys_mount fs/namespace.c:3406 [inline]
__x64_sys_mount+0x1ea/0x300 fs/namespace.c:3406
do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46
entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x45e219
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:00007f654e3edc68 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 000000000045e219
RDX: 0000000000000000 RSI: 0000000020000000 RDI: 0000000000000000
RBP: 000000000119bfd0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000119bf8c
R13: 00007ffd9c235e4f R14: 00007f654e3ee9c0 R15: 000000000119bf8c