./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor1386977289

<...>
Warning: Permanently added '10.128.0.153' (ED25519) to the list of known hosts.
execve("./syz-executor1386977289", ["./syz-executor1386977289"], 0x7ffd2bdfd0a0 /* 10 vars */) = 0
brk(NULL)                               = 0x555556efb000
brk(0x555556efbd00)                     = 0x555556efbd00
arch_prctl(ARCH_SET_FS, 0x555556efb380) = 0
set_tid_address(0x555556efb650)         = 5038
set_robust_list(0x555556efb660, 24)     = 0
rseq(0x555556efbca0, 0x20, 0, 0x53053053) = 0
prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0
readlink("/proc/self/exe", "/root/syz-executor1386977289", 4096) = 28
getrandom("\x0c\x82\xde\x89\x69\x28\xcd\x43", 8, GRND_NONBLOCK) = 8
brk(NULL)                               = 0x555556efbd00
brk(0x555556f1cd00)                     = 0x555556f1cd00
brk(0x555556f1d000)                     = 0x555556f1d000
mprotect(0x7feb11b05000, 16384, PROT_READ) = 0
mmap(0x1ffff000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x1ffff000
mmap(0x20000000, 16777216, PROT_READ|PROT_WRITE|PROT_EXEC, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x20000000
mmap(0x21000000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x21000000
unshare(CLONE_NEWPID)                   = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5039 attached
 <unfinished ...>
[pid  5039] set_robust_list(0x555556efb660, 24 <unfinished ...>
[pid  5038] <... clone resumed>, child_tidptr=0x555556efb650) = 5039
[pid  5039] <... set_robust_list resumed>) = 0
[pid  5039] mount(NULL, "/sys/fs/fuse/connections", "fusectl", 0, NULL) = -1 EBUSY (Device or resource busy)
[pid  5039] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  5039] setsid()                    = 1
[pid  5039] prlimit64(0, RLIMIT_AS, {rlim_cur=204800*1024, rlim_max=204800*1024}, NULL) = 0
[pid  5039] prlimit64(0, RLIMIT_MEMLOCK, {rlim_cur=32768*1024, rlim_max=32768*1024}, NULL) = 0
[pid  5039] prlimit64(0, RLIMIT_FSIZE, {rlim_cur=139264*1024, rlim_max=139264*1024}, NULL) = 0
[pid  5039] prlimit64(0, RLIMIT_STACK, {rlim_cur=1024*1024, rlim_max=1024*1024}, NULL) = 0
[pid  5039] prlimit64(0, RLIMIT_CORE, {rlim_cur=131072*1024, rlim_max=131072*1024}, NULL) = 0
[pid  5039] prlimit64(0, RLIMIT_NOFILE, {rlim_cur=256, rlim_max=256}, NULL) = 0
[pid  5039] unshare(CLONE_NEWNS)        = 0
[pid  5039] mount(NULL, "/", NULL, MS_REC|MS_PRIVATE, NULL) = 0
[pid  5039] unshare(CLONE_NEWIPC)       = 0
[pid  5039] unshare(CLONE_NEWCGROUP)    = 0
[pid  5039] unshare(CLONE_NEWUTS)       = 0
[pid  5039] unshare(CLONE_SYSVSEM)      = 0
[pid  5039] openat(AT_FDCWD, "/proc/sys/kernel/shmmax", O_WRONLY|O_CLOEXEC) = 3
[pid  5039] write(3, "16777216", 8)     = 8
[pid  5039] close(3)                    = 0
[pid  5039] openat(AT_FDCWD, "/proc/sys/kernel/shmall", O_WRONLY|O_CLOEXEC) = 3
[pid  5039] write(3, "536870912", 9)    = 9
[pid  5039] close(3)                    = 0
[pid  5039] openat(AT_FDCWD, "/proc/sys/kernel/shmmni", O_WRONLY|O_CLOEXEC) = 3
[pid  5039] write(3, "1024", 4)         = 4
[pid  5039] close(3)                    = 0
[pid  5039] openat(AT_FDCWD, "/proc/sys/kernel/msgmax", O_WRONLY|O_CLOEXEC) = 3
[pid  5039] write(3, "8192", 4)         = 4
[pid  5039] close(3)                    = 0
[pid  5039] openat(AT_FDCWD, "/proc/sys/kernel/msgmni", O_WRONLY|O_CLOEXEC) = 3
[pid  5039] write(3, "1024", 4)         = 4
[pid  5039] close(3)                    = 0
[pid  5039] openat(AT_FDCWD, "/proc/sys/kernel/msgmnb", O_WRONLY|O_CLOEXEC) = 3
[pid  5039] write(3, "1024", 4)         = 4
[pid  5039] close(3)                    = 0
[pid  5039] openat(AT_FDCWD, "/proc/sys/kernel/sem", O_WRONLY|O_CLOEXEC) = 3
[pid  5039] write(3, "1024 1048576 500 1024", 21) = 21
[pid  5039] close(3)                    = 0
[pid  5039] getpid()                    = 1
[pid  5039] capget({version=_LINUX_CAPABILITY_VERSION_3, pid=1}, {effective=1<<CAP_CHOWN|1<<CAP_DAC_OVERRIDE|1<<CAP_DAC_READ_SEARCH|1<<CAP_FOWNER|1<<CAP_FSETID|1<<CAP_KILL|1<<CAP_SETGID|1<<CAP_SETUID|1<<CAP_SETPCAP|1<<CAP_LINUX_IMMUTABLE|1<<CAP_NET_BIND_SERVICE|1<<CAP_NET_BROADCAST|1<<CAP_NET_ADMIN|1<<CAP_NET_RAW|1<<CAP_IPC_LOCK|1<<CAP_IPC_OWNER|1<<CAP_SYS_MODULE|1<<CAP_SYS_RAWIO|1<<CAP_SYS_CHROOT|1<<CAP_SYS_PTRACE|1<<CAP_SYS_PACCT|1<<CAP_SYS_ADMIN|1<<CAP_SYS_BOOT|1<<CAP_SYS_NICE|1<<CAP_SYS_RESOURCE|1<<CAP_SYS_TIME|1<<CAP_SYS_TTY_CONFIG|1<<CAP_MKNOD|1<<CAP_LEASE|1<<CAP_AUDIT_WRITE|1<<CAP_AUDIT_CONTROL|1<<CAP_SETFCAP|1<<CAP_MAC_OVERRIDE|1<<CAP_MAC_ADMIN|1<<CAP_SYSLOG|1<<CAP_WAKE_ALARM|1<<CAP_BLOCK_SUSPEND|1<<CAP_AUDIT_READ|1<<CAP_PERFMON|1<<CAP_BPF|1<<CAP_CHECKPOINT_RESTORE, permitted=1<<CAP_CHOWN|1<<CAP_DAC_OVERRIDE|1<<CAP_DAC_READ_SEARCH|1<<CAP_FOWNER|1<<CAP_FSETID|1<<CAP_KILL|1<<CAP_SETGID|1<<CAP_SETUID|1<<CAP_SETPCAP|1<<CAP_LINUX_IMMUTABLE|1<<CAP_NET_BIND_SERVICE|1<<CAP_NET_BROADCAST|1<<CAP_NET_ADMIN|1<<CAP_NET_RAW|1<<CAP_IPC_LOCK|1<<CAP_IPC_OWNER|1<<CAP_SYS_MODULE|1<<CAP_SYS_RAWIO|1<<CAP_SYS_CHROOT|1<<CAP_SYS_PTRACE|1<<CAP_SYS_PACCT|1<<CAP_SYS_ADMIN|1<<CAP_SYS_BOOT|1<<CAP_SYS_NICE|1<<CAP_SYS_RESOURCE|1<<CAP_SYS_TIME|1<<CAP_SYS_TTY_CONFIG|1<<CAP_MKNOD|1<<CAP_LEASE|1<<CAP_AUDIT_WRITE|1<<CAP_AUDIT_CONTROL|1<<CAP_SETFCAP|1<<CAP_MAC_OVERRIDE|1<<CAP_MAC_ADMIN|1<<CAP_SYSLOG|1<<CAP_WAKE_ALARM|1<<CAP_BLOCK_SUSPEND|1<<CAP_AUDIT_READ|1<<CAP_PERFMON|1<<CAP_BPF|1<<CAP_CHECKPOINT_RESTORE, inheritable=0}) = 0
[pid  5039] capset({version=_LINUX_CAPABILITY_VERSION_3, pid=1}, {effective=1<<CAP_CHOWN|1<<CAP_DAC_OVERRIDE|1<<CAP_DAC_READ_SEARCH|1<<CAP_FOWNER|1<<CAP_FSETID|1<<CAP_KILL|1<<CAP_SETGID|1<<CAP_SETUID|1<<CAP_SETPCAP|1<<CAP_LINUX_IMMUTABLE|1<<CAP_NET_BIND_SERVICE|1<<CAP_NET_BROADCAST|1<<CAP_NET_ADMIN|1<<CAP_NET_RAW|1<<CAP_IPC_LOCK|1<<CAP_IPC_OWNER|1<<CAP_SYS_MODULE|1<<CAP_SYS_RAWIO|1<<CAP_SYS_CHROOT|1<<CAP_SYS_PACCT|1<<CAP_SYS_ADMIN|1<<CAP_SYS_BOOT|1<<CAP_SYS_RESOURCE|1<<CAP_SYS_TIME|1<<CAP_SYS_TTY_CONFIG|1<<CAP_MKNOD|1<<CAP_LEASE|1<<CAP_AUDIT_WRITE|1<<CAP_AUDIT_CONTROL|1<<CAP_SETFCAP|1<<CAP_MAC_OVERRIDE|1<<CAP_MAC_ADMIN|1<<CAP_SYSLOG|1<<CAP_WAKE_ALARM|1<<CAP_BLOCK_SUSPEND|1<<CAP_AUDIT_READ|1<<CAP_PERFMON|1<<CAP_BPF|1<<CAP_CHECKPOINT_RESTORE, permitted=1<<CAP_CHOWN|1<<CAP_DAC_OVERRIDE|1<<CAP_DAC_READ_SEARCH|1<<CAP_FOWNER|1<<CAP_FSETID|1<<CAP_KILL|1<<CAP_SETGID|1<<CAP_SETUID|1<<CAP_SETPCAP|1<<CAP_LINUX_IMMUTABLE|1<<CAP_NET_BIND_SERVICE|1<<CAP_NET_BROADCAST|1<<CAP_NET_ADMIN|1<<CAP_NET_RAW|1<<CAP_IPC_LOCK|1<<CAP_IPC_OWNER|1<<CAP_SYS_MODULE|1<<CAP_SYS_RAWIO|1<<CAP_SYS_CHROOT|1<<CAP_SYS_PACCT|1<<CAP_SYS_ADMIN|1<<CAP_SYS_BOOT|1<<CAP_SYS_RESOURCE|1<<CAP_SYS_TIME|1<<CAP_SYS_TTY_CONFIG|1<<CAP_MKNOD|1<<CAP_LEASE|1<<CAP_AUDIT_WRITE|1<<CAP_AUDIT_CONTROL|1<<CAP_SETFCAP|1<<CAP_MAC_OVERRIDE|1<<CAP_MAC_ADMIN|1<<CAP_SYSLOG|1<<CAP_WAKE_ALARM|1<<CAP_BLOCK_SUSPEND|1<<CAP_AUDIT_READ|1<<CAP_PERFMON|1<<CAP_BPF|1<<CAP_CHECKPOINT_RESTORE, inheritable=0}) = 0
[pid  5039] unshare(CLONE_NEWNET)       = 0
[pid  5039] openat(AT_FDCWD, "/proc/sys/net/ipv4/ping_group_range", O_WRONLY|O_CLOEXEC) = 3
[pid  5039] write(3, "0 65535", 7)      = 7
[pid  5039] close(3)                    = 0
[pid  5039] mkdir("/dev/binderfs", 0777) = 0
[pid  5039] mount("binder", "/dev/binderfs", "binder", 0, NULL) = 0
[pid  5039] symlink("/dev/binderfs", "./binderfs") = 0
[pid  5039] memfd_create("syzkaller", 0) = 3
[pid  5039] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7feb09634000
[pid  5039] write(3, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x08\x02\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x03\x00\x00\x00\x00\x00\x00\x04\x00\x00\x00\x00\x00\x00\x00\xff\x00\x00\x00\x00\x00\x00\x00\xf5\x00\x00\x00\x01\x00\x00\x00\xf7\x9a\x81\x47\x2b\x73\xcf\x43\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152) = 2097152
[pid  5039] munmap(0x7feb09634000, 138412032) = 0
[pid  5039] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid  5039] ioctl(4, LOOP_SET_FD, 3)    = 0
[pid  5039] close(3)                    = 0
[pid  5039] mkdir("./file0", 0777)      = 0
[   57.663644][ T5039] syz-executor138[5039]: memfd_create() called without MFD_EXEC or MFD_NOEXEC_SEAL set
[   57.698912][ T5039] loop0: detected capacity change from 0 to 4096
[pid  5039] mount("/dev/loop0", "./file0", "ntfs", 0, "errors=remount-ro,disable_sparse=yes,dmask=00000000000000000000000,disable_sparse=yes,disable_sparse"...) = 0
[pid  5039] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid  5039] chdir("./file0")            = 0
[pid  5039] ioctl(4, LOOP_CLR_FD)       = 0
[pid  5039] close(4)                    = 0
[pid  5039] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|FASYNC, 000) = 4
[pid  5039] openat(AT_FDCWD, "/proc/partitions", O_RDONLY) = 5
[pid  5039] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY) = 6
[   57.720579][ T5039] ntfs: volume version 3.1.
[pid  5039] sendfile(6, 5, [58] => [671], 72057594037930097) = 613
[pid  5039] exit_group(1)               = ?
[   57.851783][ T5039] syz-executor138 (5039): drop_caches: 1
[   57.888902][ T5039] syz-executor138 (5039): drop_caches: 1
[   57.905670][ T2872] 
[   57.908025][ T2872] ======================================================
[   57.915018][ T2872] WARNING: possible circular locking dependency detected
[   57.922019][ T2872] 6.6.0-rc7-syzkaller-00123-g3a568e3a961b #0 Not tainted
[   57.929030][ T2872] ------------------------------------------------------
[   57.936024][ T2872] kworker/u4:7/2872 is trying to acquire lock:
[   57.942154][ T2872] ffff88823bd6c940 (&rl->lock){++++}-{3:3}, at: ntfs_read_folio+0x1d7f/0x3080
[   57.951014][ T2872] 
[   57.951014][ T2872] but task is already holding lock:
[   57.958352][ T2872] ffff888075e7aad0 (&ni->mrec_lock){+.+.}-{3:3}, at: map_mft_record+0x4a/0x730
[   57.967282][ T2872] 
[   57.967282][ T2872] which lock already depends on the new lock.
[   57.967282][ T2872] 
[   57.977660][ T2872] 
[   57.977660][ T2872] the existing dependency chain (in reverse order) is:
[   57.986648][ T2872] 
[   57.986648][ T2872] -> #1 (&ni->mrec_lock){+.+.}-{3:3}:
[   57.994176][ T2872]        __mutex_lock+0x181/0x1340
[   57.999269][ T2872]        map_mft_record+0x4a/0x730
[   58.004364][ T2872]        ntfs_truncate+0x263/0x2a50
[   58.009541][ T2872]        ntfs_setattr+0x3dd/0x5b0
[   58.014580][ T2872]        notify_change+0x742/0x11c0
[   58.019762][ T2872]        do_truncate+0x15c/0x220
[   58.024683][ T2872]        path_openat+0x23f1/0x29c0
[   58.029777][ T2872]        do_filp_open+0x1de/0x430
[   58.034779][ T2872]        do_sys_openat2+0x176/0x1e0
[   58.039951][ T2872]        __x64_sys_openat+0x175/0x210
[   58.045296][ T2872]        do_syscall_64+0x38/0xb0
[   58.050211][ T2872]        entry_SYSCALL_64_after_hwframe+0x63/0xcd
[   58.056616][ T2872] 
[   58.056616][ T2872] -> #0 (&rl->lock){++++}-{3:3}:
[   58.063727][ T2872]        __lock_acquire+0x2e3d/0x5de0
[   58.069080][ T2872]        lock_acquire+0x1ae/0x510
[   58.074084][ T2872]        down_read+0x9c/0x470
[   58.078734][ T2872]        ntfs_read_folio+0x1d7f/0x3080
[   58.084170][ T2872]        filemap_read_folio+0xe9/0x2c0
[   58.089605][ T2872]        do_read_cache_folio+0x205/0x540
[   58.095213][ T2872]        read_cache_page+0x5b/0x230
[   58.100387][ T2872]        ntfs_sync_mft_mirror+0x242/0x1eb0
[   58.106173][ T2872]        write_mft_record_nolock+0x1967/0x1d90
[   58.112309][ T2872]        write_mft_record+0x14b/0x380
[   58.117658][ T2872]        __ntfs_write_inode+0x91b/0xc30
[   58.123181][ T2872]        __writeback_single_inode+0xa81/0xe70
[   58.129243][ T2872]        writeback_sb_inodes+0x599/0x1070
[   58.134939][ T2872]        wb_writeback+0x2a5/0xa90
[   58.139939][ T2872]        wb_workfn+0x29c/0xfd0
[   58.144681][ T2872]        process_one_work+0x884/0x15c0
[   58.150119][ T2872]        worker_thread+0x8b9/0x1290
[   58.155296][ T2872]        kthread+0x33c/0x440
[   58.159864][ T2872]        ret_from_fork+0x45/0x80
[   58.164779][ T2872]        ret_from_fork_asm+0x11/0x20
[   58.170042][ T2872] 
[   58.170042][ T2872] other info that might help us debug this:
[   58.170042][ T2872] 
[   58.180248][ T2872]  Possible unsafe locking scenario:
[   58.180248][ T2872] 
[   58.187675][ T2872]        CPU0                    CPU1
[   58.193017][ T2872]        ----                    ----
[   58.198359][ T2872]   lock(&ni->mrec_lock);
[   58.202665][ T2872]                                lock(&rl->lock);
[   58.209054][ T2872]                                lock(&ni->mrec_lock);
[   58.215874][ T2872]   rlock(&rl->lock);
[   58.219832][ T2872] 
[   58.219832][ T2872]  *** DEADLOCK ***
[   58.219832][ T2872] 
[   58.227950][ T2872] 3 locks held by kworker/u4:7/2872:
[   58.233209][ T2872]  #0: ffff888013a9c138 ((wq_completion)writeback){+.+.}-{0:0}, at: process_one_work+0x787/0x15c0
[   58.243804][ T2872]  #1: ffffc9000a217d80 ((work_completion)(&(&wb->dwork)->work)){+.+.}-{0:0}, at: process_one_work+0x7e9/0x15c0
[   58.255603][ T2872]  #2: ffff888075e7aad0 (&ni->mrec_lock){+.+.}-{3:3}, at: map_mft_record+0x4a/0x730
[   58.264969][ T2872] 
[   58.264969][ T2872] stack backtrace:
[   58.270833][ T2872] CPU: 1 PID: 2872 Comm: kworker/u4:7 Not tainted 6.6.0-rc7-syzkaller-00123-g3a568e3a961b #0
[   58.280977][ T2872] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/09/2023
[   58.291126][ T2872] Workqueue: writeback wb_workfn (flush-7:0)
[   58.297103][ T2872] Call Trace:
[   58.300364][ T2872]  <TASK>
[   58.303300][ T2872]  dump_stack_lvl+0xd9/0x1b0
[   58.307875][ T2872]  check_noncircular+0x311/0x3f0
[   58.312798][ T2872]  ? print_circular_bug+0x750/0x750
[   58.317980][ T2872]  __lock_acquire+0x2e3d/0x5de0
[   58.322813][ T2872]  ? lockdep_hardirqs_on_prepare+0x410/0x410
[   58.328777][ T2872]  lock_acquire+0x1ae/0x510
[   58.333277][ T2872]  ? ntfs_read_folio+0x1d7f/0x3080
[   58.338366][ T2872]  ? lock_sync+0x190/0x190
[   58.342761][ T2872]  ? find_held_lock+0x2d/0x110
[   58.347502][ T2872]  ? preempt_count_sub+0x150/0x150
[   58.352601][ T2872]  down_read+0x9c/0x470
[   58.356737][ T2872]  ? ntfs_read_folio+0x1d7f/0x3080
[   58.361828][ T2872]  ? down_write_killable+0x250/0x250
[   58.367090][ T2872]  ? mark_held_locks+0x9f/0xe0
[   58.371834][ T2872]  ? _raw_read_unlock_irqrestore+0x4e/0x70
[   58.377619][ T2872]  ntfs_read_folio+0x1d7f/0x3080
[   58.382538][ T2872]  ? ntfs_end_buffer_async_read+0x18d0/0x18d0
[   58.388587][ T2872]  ? folio_add_lru+0x451/0x7d0
[   58.393329][ T2872]  ? ntfs_end_buffer_async_read+0x18d0/0x18d0
[   58.399370][ T2872]  filemap_read_folio+0xe9/0x2c0
[   58.404288][ T2872]  ? __folio_lock_killable+0x20/0x20
[   58.409551][ T2872]  ? __filemap_get_folio+0x31c/0xbc0
[   58.414820][ T2872]  ? find_held_lock+0x2d/0x110
[   58.419563][ T2872]  do_read_cache_folio+0x205/0x540
[   58.424656][ T2872]  ? ntfs_end_buffer_async_read+0x18d0/0x18d0
[   58.430699][ T2872]  read_cache_page+0x5b/0x230
[   58.435358][ T2872]  ntfs_sync_mft_mirror+0x242/0x1eb0
[   58.440623][ T2872]  ? should_fail_request+0x80/0x80
[   58.445714][ T2872]  ? preempt_count_sub+0x150/0x150
[   58.450825][ T2872]  ? ntfs_mft_bitmap_extend_allocation_nolock+0x1f10/0x1f10
[   58.458093][ T2872]  write_mft_record_nolock+0x1967/0x1d90
[   58.463736][ T2872]  ? ntfs_sync_mft_mirror+0x1eb0/0x1eb0
[   58.469263][ T2872]  ? preempt_count_sub+0x150/0x150
[   58.474357][ T2872]  write_mft_record+0x14b/0x380
[   58.479186][ T2872]  __ntfs_write_inode+0x91b/0xc30
[   58.484194][ T2872]  __writeback_single_inode+0xa81/0xe70
[   58.489715][ T2872]  ? __mark_inode_dirty+0xd50/0xd50
[   58.494893][ T2872]  ? _raw_spin_unlock+0x28/0x40
[   58.499723][ T2872]  ? wbc_attach_and_unlock_inode+0x561/0x910
[   58.505694][ T2872]  writeback_sb_inodes+0x599/0x1070
[   58.510874][ T2872]  ? sync_inode_metadata+0xe0/0xe0
[   58.515966][ T2872]  ? rcu_is_watching+0x12/0xb0
[   58.520708][ T2872]  ? queue_io+0x3ed/0x4e0
[   58.525018][ T2872]  wb_writeback+0x2a5/0xa90
[   58.529499][ T2872]  ? __writeback_inodes_wb+0x2d0/0x2d0
[   58.534948][ T2872]  ? reacquire_held_locks+0x4b0/0x4b0
[   58.540300][ T2872]  ? mark_held_locks+0x9f/0xe0
[   58.545046][ T2872]  wb_workfn+0x29c/0xfd0
[   58.549269][ T2872]  ? inode_wait_for_writeback+0x30/0x30
[   58.554795][ T2872]  ? lock_sync+0x190/0x190
[   58.559190][ T2872]  ? lock_sync+0x190/0x190
[   58.563604][ T2872]  ? reacquire_held_locks+0x4b0/0x4b0
[   58.568956][ T2872]  process_one_work+0x884/0x15c0
[   58.573878][ T2872]  ? lock_sync+0x190/0x190
[   58.578273][ T2872]  ? init_worker_pool+0x770/0x770
[   58.583276][ T2872]  ? assign_work+0x1a0/0x240
[   58.587843][ T2872]  worker_thread+0x8b9/0x1290
[   58.592504][ T2872]  ? process_one_work+0x15c0/0x15c0
[   58.597682][ T2872]  kthread+0x33c/0x440
[   58.601731][ T2872]  ? _raw_spin_unlock_irq+0x23/0x50
[pid  5039] +++ exited with 1 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5039, si_uid=0, si_status=1, si_utime=0, si_stime=26 /* 0.26 s */} ---
exit_group(0)                           = ?
+++ exited with 0 +++
[   58.606907][ T2872]  ? kth