INFO: task syz-executor172:10861 blocked for more than 140 seconds.
      Not tainted 4.19.211-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
syz-executor172 D26944 10861   8103 0x00000004
Call Trace:
 context_switch kernel/sched/core.c:2828 [inline]
 __schedule+0x887/0x2040 kernel/sched/core.c:3517
 schedule+0x8d/0x1b0 kernel/sched/core.c:3561
 io_schedule+0xb5/0x120 kernel/sched/core.c:5181
 bit_wait_io+0x12/0x90 kernel/sched/wait_bit.c:207
 __wait_on_bit_lock+0xb5/0x170 kernel/sched/wait_bit.c:89
 out_of_line_wait_on_bit_lock+0xd2/0x100 kernel/sched/wait_bit.c:116
 wait_on_bit_lock_io include/linux/wait_bit.h:208 [inline]
 __lock_buffer+0x52/0x60 fs/buffer.c:65
 lock_buffer include/linux/buffer_head.h:374 [inline]
 __sync_dirty_buffer+0x2a6/0x320 fs/buffer.c:3178
 __ext4_handle_dirty_metadata+0x234/0x590 fs/ext4/ext4_jbd2.c:300
 ext4_finish_convert_inline_dir fs/ext4/inline.c:1173 [inline]
 ext4_convert_inline_data_nolock+0x967/0xd10 fs/ext4/inline.c:1249
 ext4_try_add_inline_entry+0x338/0x570 fs/ext4/inline.c:1322
 ext4_add_entry+0x33c/0xbb0 fs/ext4/namei.c:2117
 ext4_mkdir+0x6f5/0xe10 fs/ext4/namei.c:2711
 vfs_mkdir+0x508/0x7a0 fs/namei.c:3819
 do_mkdirat+0x262/0x2d0 fs/namei.c:3842
 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x7fc871b2a779
Code: Bad RIP value.
RSP: 002b:00007fc871ad62f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000053
RAX: ffffffffffffffda RBX: 00007fc871bb0780 RCX: 00007fc871b2a779
RDX: 00007fc871b2a779 RSI: 0000000000000000 RDI: 0000000020000300
RBP: 00007fc871b7d780 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000073 R11: 0000000000000246 R12: 7261637369646f6e
R13: 0030656c69662f2e R14: 6569727261626f6e R15: 00007fc871bb0788

Showing all locks held in the system:
1 lock held by khungtaskd/1571:
 #0: 00000000207eab1c (rcu_read_lock){....}, at: debug_show_all_locks+0x53/0x265 kernel/locking/lockdep.c:4441
1 lock held by in:imklog/7782:
 #0: 00000000df023b0c (&f->f_pos_lock){+.+.}, at: __fdget_pos+0x26f/0x310 fs/file.c:767
3 locks held by syz-executor172/10861:
 #0: 00000000a83ebffa (sb_writers#3){.+.+}, at: sb_start_write include/linux/fs.h:1579 [inline]
 #0: 00000000a83ebffa (sb_writers#3){.+.+}, at: mnt_want_write+0x3a/0xb0 fs/namespace.c:360
 #1: 00000000230a7ff9 (&type->i_mutex_dir_key#3/1){+.+.}, at: inode_lock_nested include/linux/fs.h:783 [inline]
 #1: 00000000230a7ff9 (&type->i_mutex_dir_key#3/1){+.+.}, at: filename_create+0x15a/0x490 fs/namei.c:3638
 #2: 00000000142fa41f (&ei->xattr_sem){++++}, at: ext4_write_lock_xattr fs/ext4/xattr.h:141 [inline]
 #2: 00000000142fa41f (&ei->xattr_sem){++++}, at: ext4_try_add_inline_entry+0xfc/0x570 fs/ext4/inline.c:1280

=============================================

NMI backtrace for cpu 1
CPU: 1 PID: 1571 Comm: khungtaskd Not tainted 4.19.211-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/12/2023
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x1fc/0x2ef lib/dump_stack.c:118
 nmi_cpu_backtrace.cold+0x63/0xa2 lib/nmi_backtrace.c:101
 nmi_trigger_cpumask_backtrace+0x1a6/0x1f0 lib/nmi_backtrace.c:62
 trigger_all_cpu_backtrace include/linux/nmi.h:146 [inline]
 check_hung_uninterruptible_tasks kernel/hung_task.c:203 [inline]
 watchdog+0x991/0xe60 kernel/hung_task.c:287
 kthread+0x33f/0x460 kernel/kthread.c:259
 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 10 Comm: rcu_preempt Not tainted 4.19.211-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/12/2023
RIP: 0010:__sanitizer_cov_trace_pc+0x47/0x50 kernel/kcov.c:111
Code: 90 60 13 00 00 83 fa 02 75 20 48 8b 88 68 13 00 00 8b 80 64 13 00 00 48 8b 11 48 83 c2 01 48 39 d0 76 07 48 89 34 d1 48 89 11 <c3> 0f 1f 84 00 00 00 00 00 49 89 f1 49 89 fa 65 48 8b 34 25 c0 df
RSP: 0018:ffff8880b5a67d48 EFLAGS: 00000093
RAX: ffff8880b5a4e280 RBX: 0000000000000001 RCX: ffffffff83771e23
RDX: 0000000000000000 RSI: ffffffff83771e31 RDI: 0000000000000005
RBP: ffffffff88b3e120 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000005 R11: 0000000000000000 R12: 0000000000000000
R13: ffffffff88b3e0e0 R14: dffffc0000000000 R15: 000000000002be80
FS:  0000000000000000(0000) GS:ffff8880ba000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f7fc34cd000 CR3: 00000000a102a000 CR4: 00000000003406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 check_preemption_disabled+0x41/0x280 lib/smp_processor_id.c:51
 rcu_gp_cleanup kernel/rcu/tree.c:2115 [inline]
 rcu_gp_kthread+0x147b/0x21c0 kernel/rcu/tree.c:2244
 kthread+0x33f/0x460 kernel/kthread.c:259
 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415