INFO: task syslogd:4415 blocked for more than 143 seconds.
Not tainted 6.1.0-next-20221216-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syslogd state:D stack:25488 pid:4415 ppid:1 flags:0x00000000
Call Trace:
context_switch kernel/sched/core.c:5244 [inline]
__schedule+0x2544/0x53f0 kernel/sched/core.c:6555
schedule+0xde/0x1b0 kernel/sched/core.c:6631
rwsem_down_read_slowpath+0x5a7/0xb20 kernel/locking/rwsem.c:1095
__down_read_common kernel/locking/rwsem.c:1260 [inline]
__down_read kernel/locking/rwsem.c:1269 [inline]
down_read+0xe6/0x450 kernel/locking/rwsem.c:1511
inode_lock_shared include/linux/fs.h:766 [inline]
lookup_slow fs/namei.c:1701 [inline]
walk_component+0x332/0x5a0 fs/namei.c:1993
link_path_walk.part.0+0x730/0xdf0 fs/namei.c:2320
link_path_walk fs/namei.c:2245 [inline]
path_openat+0x25c/0x2a50 fs/namei.c:3710
do_filp_open+0x1ba/0x410 fs/namei.c:3741
do_sys_openat2+0x16d/0x4c0 fs/open.c:1310
do_sys_open fs/open.c:1326 [inline]
__do_sys_openat fs/open.c:1342 [inline]
__se_sys_openat fs/open.c:1337 [inline]
__x64_sys_openat+0x143/0x1f0 fs/open.c:1337
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f1a13b44697
RSP: 002b:00007fff97e38fe0 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 000055e93c555910 RCX: 00007f1a13b44697
RDX: 0000000000000d41 RSI: 00007f1a13cd299a RDI: 00000000ffffff9c
RBP: 00007f1a13cd299a R08: 00007f1a13bd4040 R09: 00007f1a13bd40c0
R10: 00000000000001b6 R11: 0000000000000246 R12: 0000000000000d41
R13: 000055e93c555a50 R14: 0000000000000003 R15: 000055e93c555a60
INFO: task udevd:4433 blocked for more than 143 seconds.
Not tainted 6.1.0-next-20221216-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:udevd state:D stack:26960 pid:4433 ppid:1 flags:0x00000000
Call Trace:
context_switch kernel/sched/core.c:5244 [inline]
__schedule+0x2544/0x53f0 kernel/sched/core.c:6555
schedule+0xde/0x1b0 kernel/sched/core.c:6631
rwsem_down_read_slowpath+0x5a7/0xb20 kernel/locking/rwsem.c:1095
__down_read_common kernel/locking/rwsem.c:1260 [inline]
__down_read kernel/locking/rwsem.c:1269 [inline]
down_read+0xe6/0x450 kernel/locking/rwsem.c:1511
inode_lock_shared include/linux/fs.h:766 [inline]
lookup_slow fs/namei.c:1701 [inline]
walk_component+0x332/0x5a0 fs/namei.c:1993
link_path_walk.part.0+0x730/0xdf0 fs/namei.c:2320
link_path_walk fs/namei.c:2244 [inline]
path_lookupat+0xb7/0x840 fs/namei.c:2473
filename_lookup+0x1d2/0x590 fs/namei.c:2503
vfs_statx+0x14c/0x430 fs/stat.c:238
vfs_fstatat+0x90/0xb0 fs/stat.c:276
__do_sys_newfstatat+0x8a/0x110 fs/stat.c:446
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f11a3f251da
RSP: 002b:00007fff23cb1e88 EFLAGS: 00000246 ORIG_RAX: 0000000000000106
RAX: ffffffffffffffda RBX: 0000561537a926a0 RCX: 00007f11a3f251da
RDX: 00007fff23cb1e98 RSI: 0000561537a807ed RDI: 00000000ffffff9c
RBP: 0000561537dab838 R08: 00000000038e3d1d R09: 00007fff23dd7080
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000001 R14: 0000000000000000 R15: 00007fff23cb1e98
INFO: task syz-executor104:5071 blocked for more than 143 seconds.
Not tainted 6.1.0-next-20221216-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor104 state:D stack:27552 pid:5071 ppid:5068 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:5244 [inline]
__schedule+0x2544/0x53f0 kernel/sched/core.c:6555
schedule+0xde/0x1b0 kernel/sched/core.c:6631
rwsem_down_read_slowpath+0x5a7/0xb20 kernel/locking/rwsem.c:1095
__down_read_common kernel/locking/rwsem.c:1260 [inline]
__down_read kernel/locking/rwsem.c:1269 [inline]
down_read+0xe6/0x450 kernel/locking/rwsem.c:1511
inode_lock_shared include/linux/fs.h:766 [inline]
lookup_slow fs/namei.c:1701 [inline]
walk_component+0x332/0x5a0 fs/namei.c:1993
link_path_walk.part.0+0x730/0xdf0 fs/namei.c:2320
link_path_walk fs/namei.c:2245 [inline]
path_openat+0x25c/0x2a50 fs/namei.c:3710
do_filp_open+0x1ba/0x410 fs/namei.c:3741
do_sys_openat2+0x16d/0x4c0 fs/open.c:1310
do_sys_open fs/open.c:1326 [inline]
__do_sys_openat fs/open.c:1342 [inline]
__se_sys_openat fs/open.c:1337 [inline]
__x64_sys_openat+0x143/0x1f0 fs/open.c:1337
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f93daa64338
RSP: 002b:00007ffddcf654f0 EFLAGS: 00000287 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 00007ffddcf65560 RCX: 00007f93daa64338
RDX: 0000000000090800 RSI: 00007f93daab6004 RDI: 00000000ffffff9c
RBP: 00000000000013d0 R08: 0000000000090800 R09: 00007f93daab6004
R10: 0000000000000000 R11: 0000000000000287 R12: 00007ffddcf656e4
R13: 00007ffddcf656e4 R14: 0000000000000000 R15: 0000000000000000
INFO: task syz-executor104:5073 blocked for more than 144 seconds.
Not tainted 6.1.0-next-20221216-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor104 state:D stack:26632 pid:5073 ppid:5071 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5244 [inline]
__schedule+0x2544/0x53f0 kernel/sched/core.c:6555
schedule+0xde/0x1b0 kernel/sched/core.c:6631
schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:6690
__mutex_lock_common kernel/locking/mutex.c:679 [inline]
__mutex_lock+0xa48/0x1360 kernel/locking/mutex.c:747
fuse_lock_inode+0xd2/0x110 fs/fuse/inode.c:468
fuse_lookup.part.0+0x86/0x390 fs/fuse/dir.c:432
fuse_lookup+0x74/0x90 fs/fuse/dir.c:429
__lookup_slow+0x24c/0x460 fs/namei.c:1685
lookup_slow fs/namei.c:1702 [inline]
walk_component+0x33f/0x5a0 fs/namei.c:1993
link_path_walk.part.0+0x730/0xdf0 fs/namei.c:2320
link_path_walk fs/namei.c:2245 [inline]
path_openat+0x25c/0x2a50 fs/namei.c:3710
do_filp_open+0x1ba/0x410 fs/namei.c:3741
do_sys_openat2+0x16d/0x4c0 fs/open.c:1310
do_sys_open fs/open.c:1326 [inline]
__do_sys_openat fs/open.c:1342 [inline]
__se_sys_openat fs/open.c:1337 [inline]
__x64_sys_openat+0x143/0x1f0 fs/open.c:1337
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f93daa20f34
RSP: 002b:00007f93daa10e60 EFLAGS: 00000293 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 00007f93daa20f34
RDX: 0000000000004000 RSI: 00007f93daa10ee0 RDI: 00000000ffffff9c
RBP: 00007f93daa10ee0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000004000
R13: 0000000000000065 R14: 00007f93daab80a8 R15: 00007f93daaeb4c8
INFO: task syz-executor104:5075 blocked for more than 144 seconds.
Not tainted 6.1.0-next-20221216-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor104 state:D stack:28792 pid:5075 ppid:5071 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5244 [inline]
__schedule+0x2544/0x53f0 kernel/sched/core.c:6555
schedule+0xde/0x1b0 kernel/sched/core.c:6631
rwsem_down_write_slowpath+0x600/0x12e0 kernel/locking/rwsem.c:1190
__down_write_common kernel/locking/rwsem.c:1305 [inline]
__down_write_common kernel/locking/rwsem.c:1302 [inline]
__down_write kernel/locking/rwsem.c:1314 [inline]
down_write_nested+0x1ec/0x220 kernel/locking/rwsem.c:1673
inode_lock_nested include/linux/fs.h:791 [inline]
fuse_reverse_inval_entry+0x59/0x580 fs/fuse/dir.c:1252
fuse_notify_delete fs/fuse/dev.c:1552 [inline]
fuse_notify fs/fuse/dev.c:1801 [inline]
fuse_dev_do_write+0x2384/0x2c00 fs/fuse/dev.c:1876
fuse_dev_write+0x154/0x1e0 fs/fuse/dev.c:1960
call_write_iter include/linux/fs.h:2186 [inline]
new_sync_write fs/read_write.c:491 [inline]
vfs_write+0xa45/0xe40 fs/read_write.c:584
ksys_write+0x12b/0x250 fs/read_write.c:637
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f93daa64669
RSP: 002b:00007f93da9f02f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f93daaeb4d0 RCX: 00007f93daa64669
RDX: 000000000000002c RSI: 00000000200000c0 RDI: 0000000000000003
RBP: 00007f93daab8084 R08: 0000000000000000 R09: 0000000000000000
R10: 00007f93da9f0700 R11: 0000000000000246 R12: 0030656c69662f2e
R13: 0000000000000003 R14: 00007f93daab80a8 R15: 00007f93daaeb4d8
Showing all locks held in the system:
1 lock held by rcu_tasks_kthre/12:
#0: ffffffff8c791d70 (rcu_tasks.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x26/0xc70 kernel/rcu/tasks.h:507
1 lock held by rcu_tasks_trace/13:
#0: ffffffff8c791a70 (rcu_tasks_trace.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x26/0xc70 kernel/rcu/tasks.h:507
1 lock held by khungtaskd/28:
#0: ffffffff8c7928c0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x57/0x2c2 kernel/locking/lockdep.c:6494
2 locks held by kworker/u4:5/999:
#0: ffff888012479138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
#0: ffff888012479138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline]
#0: ffff888012479138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline]
#0: ffff888012479138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:636 [inline]
#0: ffff888012479138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:663 [inline]
#0: ffff888012479138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work+0x86d/0x1710 kernel/workqueue.c:2260
#1: ffffc900051efda8 ((work_completion)(&(&kfence_timer)->work)){+.+.}-{0:0}, at: process_one_work+0x8a1/0x1710 kernel/workqueue.c:2264
1 lock held by syslogd/4415:
#0: ffff888076a28150 (&type->i_mutex_dir_key#6){++++}-{3:3}, at: inode_lock_shared include/linux/fs.h:766 [inline]
#0: ffff888076a28150 (&type->i_mutex_dir_key#6){++++}-{3:3}, at: lookup_slow fs/namei.c:1701 [inline]
#0: ffff888076a28150 (&type->i_mutex_dir_key#6){++++}-{3:3}, at: walk_component+0x332/0x5a0 fs/namei.c:1993
1 lock held by udevd/4433:
#0: ffff888076a28150 (&type->i_mutex_dir_key#6){++++}-{3:3}, at: inode_lock_shared include/linux/fs.h:766 [inline]
#0: ffff888076a28150 (&type->i_mutex_dir_key#6){++++}-{3:3}, at: lookup_slow fs/namei.c:1701 [inline]
#0: ffff888076a28150 (&type->i_mutex_dir_key#6){++++}-{3:3}, at: walk_component+0x332/0x5a0 fs/namei.c:1993
2 locks held by getty/4753:
#0: ffff888027cc2098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x26/0x80 drivers/tty/tty_ldisc.c:244
#1: ffffc900015802f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0xef4/0x13e0 drivers/tty/n_tty.c:2177
1 lock held by syz-executor104/5071:
#0: ffff888076a28150 (&type->i_mutex_dir_key#6){++++}-{3:3}, at: inode_lock_shared include/linux/fs.h:766 [inline]
#0: ffff888076a28150 (&type->i_mutex_dir_key#6){++++}-{3:3}, at: lookup_slow fs/namei.c:1701 [inline]
#0: ffff888076a28150 (&type->i_mutex_dir_key#6){++++}-{3:3}, at: walk_component+0x332/0x5a0 fs/namei.c:1993
2 locks held by syz-executor104/5073:
#0: ffff888076a28150 (&type->i_mutex_dir_key#6){++++}-{3:3}, at: inode_lock_shared include/linux/fs.h:766 [inline]
#0: ffff888076a28150 (&type->i_mutex_dir_key#6){++++}-{3:3}, at: lookup_slow fs/namei.c:1701 [inline]
#0: ffff888076a28150 (&type->i_mutex_dir_key#6){++++}-{3:3}, at: walk_component+0x332/0x5a0 fs/namei.c:1993
#1: ffff888076a285b8 (&fi->mutex){+.+.}-{3:3}, at: fuse_lock_inode+0xd2/0x110 fs/fuse/inode.c:468
2 locks held by syz-executor104/5075:
#0: ffff888021832b38 (&fc->killsb){.+.+}-{3:3}, at: fuse_notify_delete fs/fuse/dev.c:1551 [inline]
#0: ffff888021832b38 (&fc->killsb){.+.+}-{3:3}, at: fuse_notify fs/fuse/dev.c:1801 [inline]
#0: ffff888021832b38 (&fc->killsb){.+.+}-{3:3}, at: fuse_dev_do_write+0x2361/0x2c00 fs/fuse/dev.c:1876
#1: ffff888076a28150 (&type->i_mutex_dir_key#6/1){+.+.}-{3:3}, at: inode_lock_nested include/linux/fs.h:791 [inline]
#1: ffff888076a28150 (&type->i_mutex_dir_key#6/1){+.+.}-{3:3}, at: fuse_reverse_inval_entry+0x59/0x580 fs/fuse/dir.c:1252
2 locks held by udevd/5074:
#0: ffff888076a28150 (&type->i_mutex_dir_key#6){++++}-{3:3}, at: inode_lock_shared include/linux/fs.h:766 [inline]
#0: ffff888076a28150 (&type->i_mutex_dir_key#6){++++}-{3:3}, at: lookup_slow fs/namei.c:1701 [inline]
#0: ffff888076a28150 (&type->i_mutex_dir_key#6){++++}-{3:3}, at: walk_component+0x332/0x5a0 fs/namei.c:1993
#1: ffff888076a285b8 (&fi->mutex){+.+.}-{3:3}, at: fuse_lock_inode+0xd2/0x110 fs/fuse/inode.c:468
=============================================
NMI backtrace for cpu 0
CPU: 0 PID: 28 Comm: khungtaskd Not tainted 6.1.0-next-20221216-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0xd1/0x138 lib/dump_stack.c:106
nmi_cpu_backtrace.cold+0x24/0x18a lib/nmi_backtrace.c:111
nmi_trigger_cpumask_backtrace+0x32f/0x3c0 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:148 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:220 [inline]
watchdog+0xc75/0xfc0 kernel/hung_task.c:377
kthread+0x2e8/0x3a0 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1 skipped: idling at native_safe_halt arch/x86/include/asm/irqflags.h:51 [inline]
NMI backtrace for cpu 1 skipped: idling at arch_safe_halt arch/x86/include/asm/irqflags.h:89 [inline]
NMI backtrace for cpu 1 skipped: idling at acpi_safe_halt drivers/acpi/processor_idle.c:112 [inline]
NMI backtrace for cpu 1 skipped: idling at acpi_idle_do_entry+0x1fd/0x2a0 drivers/acpi/processor_idle.c:570