will be removed in v5.15! ====================================================== EXT4-fs (loop0): warning: checktime reached, running e2fsck is recommended EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue INFO: task syz-executor267:7990 blocked for more than 140 seconds. Not tainted 4.14.305-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor267 D26720 7990 7989 0x00000004 Call Trace: context_switch kernel/sched/core.c:2811 [inline] __schedule+0x88b/0x1de0 kernel/sched/core.c:3386 schedule+0x8d/0x1b0 kernel/sched/core.c:3430 io_schedule+0xb5/0x120 kernel/sched/core.c:5034 bit_wait_io+0x12/0x90 kernel/sched/wait_bit.c:249 __wait_on_bit_lock+0xc2/0x1d0 kernel/sched/wait_bit.c:89 out_of_line_wait_on_bit_lock+0xbc/0xd0 kernel/sched/wait_bit.c:116 wait_on_bit_lock_io include/linux/wait_bit.h:213 [inline] __lock_buffer+0x43/0x50 fs/buffer.c:72 lock_buffer include/linux/buffer_head.h:408 [inline] __sync_dirty_buffer+0x214/0x290 fs/buffer.c:3235 __ext4_handle_dirty_metadata+0x169/0x480 fs/ext4/ext4_jbd2.c:300 ext4_finish_convert_inline_dir fs/ext4/inline.c:1190 [inline] ext4_convert_inline_data_nolock+0x8d8/0xc60 fs/ext4/inline.c:1266 ext4_try_add_inline_entry+0x2a5/0x4a0 fs/ext4/inline.c:1339 ext4_add_entry+0x2ee/0xa40 fs/ext4/namei.c:2138 ext4_mkdir+0x5cf/0xbd0 fs/ext4/namei.c:2732 vfs_mkdir+0x463/0x6e0 fs/namei.c:3851 SYSC_mkdirat fs/namei.c:3874 [inline] SyS_mkdirat+0x1fd/0x270 fs/namei.c:3858 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x5e/0xd3 RIP: 0033:0x7f5eb5779259 RSP: 002b:00007ffe31127f08 EFLAGS: 00000246 ORIG_RAX: 0000000000000102 RAX: ffffffffffffffda RBX: 0030656c69662f2e RCX: 00007f5eb5779259 RDX: 0000000000000000 RSI: 0000000020000540 RDI: 0000000000000004 RBP: 0000000000000000 R08: 00007f5eb57e7ec0 R09: 00007f5eb57e7ec0 R10: 00007f5eb57e7ec0 R11: 0000000000000246 R12: 00007ffe31127f30 R13: 0000000000000000 R14: 431bde82d7b634db R15: 0000000000000000 Showing all locks held in the system: 1 lock held by khungtaskd/1533: #0: (tasklist_lock){.+.+}, at: [] debug_show_all_locks+0x7c/0x21a kernel/locking/lockdep.c:4548 1 lock held by in:imklog/7714: #0: (&f->f_pos_lock){+.+.}, at: [] __fdget_pos+0x1fb/0x2b0 fs/file.c:819 3 locks held by syz-executor267/7990: #0: (sb_writers#3){.+.+}, at: [] sb_start_write include/linux/fs.h:1551 [inline] #0: (sb_writers#3){.+.+}, at: [] mnt_want_write+0x3a/0xb0 fs/namespace.c:386 #1: (&type->i_mutex_dir_key#3/1){+.+.}, at: [] inode_lock_nested include/linux/fs.h:754 [inline] #1: (&type->i_mutex_dir_key#3/1){+.+.}, at: [] filename_create+0x12a/0x3f0 fs/namei.c:3676 #2: (&ei->xattr_sem){++++}, at: [] ext4_write_lock_xattr fs/ext4/xattr.h:154 [inline] #2: (&ei->xattr_sem){++++}, at: [] ext4_try_add_inline_entry+0xc2/0x4a0 fs/ext4/inline.c:1297 ============================================= NMI backtrace for cpu 0 CPU: 0 PID: 1533 Comm: khungtaskd Not tainted 4.14.305-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/21/2023 Call Trace: __dump_stack lib/dump_stack.c:17 [inline] dump_stack+0x1b2/0x281 lib/dump_stack.c:58 nmi_cpu_backtrace.cold+0x57/0x93 lib/nmi_backtrace.c:101 nmi_trigger_cpumask_backtrace+0x13a/0x180 lib/nmi_backtrace.c:62 trigger_all_cpu_backtrace include/linux/nmi.h:140 [inline] check_hung_uninterruptible_tasks kernel/hung_task.c:195 [inline] watchdog+0x5b9/0xb40 kernel/hung_task.c:274 kthread+0x30d/0x420 kernel/kthread.c:232 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:406 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 4618 Comm: systemd-journal Not tainted 4.14.305-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/21/2023 task: ffff8880a1ad86c0 task.stack: ffff8880a1ae0000 RIP: 0010:mark_held_locks+0xc3/0xf0 kernel/locking/lockdep.c:2859 RSP: 0018:ffff8880a1ae7de8 EFLAGS: 00000092 RAX: 0000000000000001 RBX: ffff8880a1ad86c0 RCX: 0000000000000000 RDX: 1ffff1101435b1e8 RSI: 0000000000000001 RDI: ffff8880a1ad8f40 RBP: ffffffff817ee4f0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000286 R13: ffff8880a1ad86c0 R14: 00000000ffffff9c R15: 00005563a42a59a3 FS: 00007f854c54a8c0(0000) GS:ffff8880ba500000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f8549919018 CR3: 00000000a1827000 CR4: 00000000003406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __trace_hardirqs_on_caller kernel/locking/lockdep.c:2883 [inline] trace_hardirqs_on_caller+0x3a8/0x580 kernel/locking/lockdep.c:2930 kmem_cache_free+0x160/0x2b0 mm/slab.c:3759 __put_cred+0x1a1/0x210 kernel/cred.c:151 put_cred include/linux/cred.h:274 [inline] SYSC_faccessat fs/open.c:444 [inline] SyS_faccessat+0x52a/0x680 fs/open.c:353 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x5e/0xd3 RIP: 0033:0x7f854b8059c7 RSP: 002b:00007ffe4883d118 EFLAGS: 00000246 ORIG_RAX: 0000000000000015 RAX: ffffffffffffffda RBX: 00007ffe48840140 RCX: 00007f854b8059c7 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 00005563a42a59a3 RBP: 00007ffe4883d260 R08: 00005563a429b3e5 R09: 0000000000000018 R10: 0000000000000069 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00005563a45078a0 R15: 00007ffe4883d750 Code: 45 d5 a8 04 74 0c 4c 89 ef e8 0a ef ff ff 85 c0 74 11 83 c3 01 41 39 9d 80 08 00 00 7f af b8 01 00 00 00 48 83 c4 08 5b 5d 41 5c <41> 5d 41 5e 41 5f c3 89 34 24 e8 7e 8f 3d 00 8b 34 24 e9 5f ff