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-executor419:8130 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-executor419 D27024 8130 8129 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: 0033:0x7f20ba153259 Code: Bad RIP value. RSP: 002b:00007ffd6a51d778 EFLAGS: 00000246 ORIG_RAX: 0000000000000102 RAX: ffffffffffffffda RBX: 0030656c69662f2e RCX: 00007f20ba153259 RDX: 0000000000000000 RSI: 0000000020000540 RDI: 0000000000000004 RBP: 0000000000000000 R08: 00007f20ba1c1ec0 R09: 00007f20ba1c1ec0 R10: 00007f20ba1c1ec0 R11: 0000000000000246 R12: 00007ffd6a51d7a0 R13: 0000000000000000 R14: 431bde82d7b634db R15: 0000000000000000 Showing all locks held in the system: 1 lock held by khungtaskd/1570: #0: 00000000a25b770a (rcu_read_lock){....}, at: debug_show_all_locks+0x53/0x265 kernel/locking/lockdep.c:4441 1 lock held by in:imklog/7821: #0: 000000008685a627 (&f->f_pos_lock){+.+.}, at: __fdget_pos+0x26f/0x310 fs/file.c:767 3 locks held by syz-executor419/8130: #0: 000000006d379cf3 (sb_writers#3){.+.+}, at: sb_start_write include/linux/fs.h:1579 [inline] #0: 000000006d379cf3 (sb_writers#3){.+.+}, at: mnt_want_write+0x3a/0xb0 fs/namespace.c:360 #1: 000000007f491071 (&type->i_mutex_dir_key#3/1){+.+.}, at: inode_lock_nested include/linux/fs.h:783 [inline] #1: 000000007f491071 (&type->i_mutex_dir_key#3/1){+.+.}, at: filename_create+0x15a/0x490 fs/namei.c:3638 #2: 00000000e8867701 (&ei->xattr_sem){++++}, at: ext4_write_lock_xattr fs/ext4/xattr.h:141 [inline] #2: 00000000e8867701 (&ei->xattr_sem){++++}, at: ext4_try_add_inline_entry+0xfc/0x570 fs/ext4/inline.c:1280 ============================================= NMI backtrace for cpu 0 CPU: 0 PID: 1570 Comm: khungtaskd Not tainted 4.19.211-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/21/2023 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 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 4682 Comm: systemd-journal Not tainted 4.19.211-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/21/2023 RIP: 0010:__read_seqcount_begin include/linux/seqlock.h:114 [inline] RIP: 0010:raw_read_seqcount_begin include/linux/seqlock.h:148 [inline] RIP: 0010:read_seqcount_begin include/linux/seqlock.h:165 [inline] RIP: 0010:set_root+0x1dd/0x5f0 fs/namei.c:818 Code: c1 e8 03 42 0f b6 14 20 48 89 c8 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 80 03 00 00 45 8b 75 40 31 ff 45 89 f7 41 83 e7 01 <44> 89 fe e8 eb 13 bd ff 45 84 ff 0f 85 b6 02 00 00 e8 ad 12 bd ff RSP: 0018:ffff8880a1abfac0 EFLAGS: 00000246 RAX: 0000000000000003 RBX: ffff8880a1abfc38 RCX: ffff8880a322a440 RDX: 0000000000000000 RSI: ffffffff81a57277 RDI: 0000000000000000 RBP: ffff8880a1abfb28 R08: ffffffff8cd37ca0 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: dffffc0000000000 R13: ffff8880a322a400 R14: 0000000000000002 R15: 0000000000000000 FS: 00007f1e0114c8c0(0000) GS:ffff8880ba100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f1dfe51e000 CR3: 00000000a1be4000 CR4: 00000000003406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: path_init+0x1057/0x19d0 fs/namei.c:2208 path_parentat+0x22/0x140 fs/namei.c:2366 filename_parentat+0x198/0x590 fs/namei.c:2389 filename_create+0x9e/0x490 fs/namei.c:3621 user_path_create fs/namei.c:3696 [inline] do_mkdirat+0xa0/0x2d0 fs/namei.c:3834 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x7f1e00407687 Code: 00 b8 ff ff ff ff c3 0f 1f 40 00 48 8b 05 09 d8 2b 00 64 c7 00 5f 00 00 00 b8 ff ff ff ff c3 0f 1f 40 00 b8 53 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d e1 d7 2b 00 f7 d8 64 89 01 48 RSP: 002b:00007ffc193ce498 EFLAGS: 00000293 ORIG_RAX: 0000000000000053 RAX: ffffffffffffffda RBX: 00007ffc193d13b0 RCX: 00007f1e00407687 RDX: 00007f1e00e78a00 RSI: 00000000000001ed RDI: 0000562c45e378a0 RBP: 00007ffc193ce4d0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000069 R11: 0000000000000293 R12: 0000000000000000 R13: 0000000000000000 R14: 00007ffc193d13b0 R15: 00007ffc193ce9c0