INFO: task syz-executor.6:5666 blocked for more than 143 seconds.
      Not tainted 5.10.109 #1
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.6  state:D stack:28840 pid: 5666 ppid:   284 flags:0x00004324
Call Trace:
 context_switch kernel/sched/core.c:3791 [inline]
 __schedule+0x848/0x1e80 kernel/sched/core.c:4540
 schedule+0xcb/0x270 kernel/sched/core.c:4618
 rwsem_down_read_slowpath+0x2ad/0xb90 kernel/locking/rwsem.c:1099
 __down_read kernel/locking/rwsem.c:1341 [inline]
 down_read+0x1f1/0x420 kernel/locking/rwsem.c:1506
 iterate_supers+0x136/0x2a0 fs/super.c:692
 ksys_sync+0x86/0x150 fs/sync.c:114
 __do_sys_sync+0xa/0x10 fs/sync.c:125
 do_syscall_64+0x33/0x40 arch/x86/entry/common.c:46
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x7f6731cf3b19
RSP: 002b:00007f672f269188 EFLAGS: 00000246 ORIG_RAX: 00000000000000a2
RAX: ffffffffffffffda RBX: 00007f6731e06f60 RCX: 00007f6731cf3b19
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 00007f6731d4df6d R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fffc636f5ef R14: 00007f672f269300 R15: 0000000000022000

Showing all locks held in the system:
1 lock held by khungtaskd/22:
 #0: ffffffff84df6fe0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x53/0x269 kernel/locking/lockdep.c:6379
2 locks held by in:imklog/178:
1 lock held by syz-executor.3/5660:
 #0: ffff88804389c0e0 (&type->s_umount_key#63/1){+.+.}-{3:3}, at: alloc_super+0x185/0x990 fs/super.c:229
1 lock held by syz-executor.6/5666:
 #0: ffff88804389c0e0 (&type->s_umount_key#66){.+.+}-{3:3}, at: iterate_supers+0x136/0x2a0 fs/super.c:692

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