./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor710385532

<...>
Warning: Permanently added '10.128.0.16' (ED25519) to the list of known hosts.
execve("./syz-executor710385532", ["./syz-executor710385532"], 0x7fff71deb1d0 /* 10 vars */) = 0
brk(NULL)                               = 0x5555701e1000
brk(0x5555701e1d00)                     = 0x5555701e1d00
arch_prctl(ARCH_SET_FS, 0x5555701e1380) = 0
set_tid_address(0x5555701e1650)         = 5082
set_robust_list(0x5555701e1660, 24)     = 0
rseq(0x5555701e1ca0, 0x20, 0, 0x53053053) = 0
prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0
readlink("/proc/self/exe", "/root/syz-executor710385532", 4096) = 27
getrandom("\xdf\x9e\xfe\x1a\x14\xf9\x41\xc9", 8, GRND_NONBLOCK) = 8
brk(NULL)                               = 0x5555701e1d00
brk(0x555570202d00)                     = 0x555570202d00
brk(0x555570203000)                     = 0x555570203000
mprotect(0x7fdc12e17000, 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
memfd_create("syzkaller", 0)            = 3
mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fdc0a800000
write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 8192) = 8192
munmap(0x7fdc0a800000, 138412032)       = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 4
ioctl(4, LOOP_SET_FD, 3)                = 0
close(3)                                = 0
close(4)                                = 0
mkdir("./file0", 0777)                  = 0
mount("/dev/loop0", "./file0", "erofs", 0, "") = 0
openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
chdir("./file0")                        = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = -1 EBUSY (Device or resource busy)
[   68.109988][ T5082] loop0: detected capacity change from 0 to 16
[   68.133877][ T5082] erofs: (device loop0): mounted with root inode @ nid 36.
[   68.176453][ T4483] BUG: using smp_processor_id() in preemptible [00000000] code: kworker/u9:1/4483
[   68.187515][ T4483] caller is z_erofs_get_gbuf+0x2c/0xd0
[   68.193601][ T4483] CPU: 0 PID: 4483 Comm: kworker/u9:1 Not tainted 6.9.0-rc2-next-20240404-syzkaller #0
[   68.204229][ T4483] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024
[   68.215634][ T4483] Workqueue: erofs_worker z_erofs_decompressqueue_work
[   68.223241][ T4483] Call Trace:
[   68.226980][ T4483]  <TASK>
[   68.230334][ T4483]  dump_stack_lvl+0x241/0x360
[   68.235169][ T4483]  ? __pfx_dump_stack_lvl+0x10/0x10
[   68.241130][ T4483]  ? __pfx__printk+0x10/0x10
[   68.247295][ T4483]  check_preemption_disabled+0x10e/0x120
[   68.253684][ T4483]  z_erofs_get_gbuf+0x2c/0xd0
[   68.259514][ T4483]  z_erofs_lz4_decompress+0xe42/0x17b0
[   68.266671][ T4483]  ? __pfx_z_erofs_lz4_decompress+0x10/0x10
[   68.273243][ T4483]  ? __mutex_lock+0x2ef/0xd70
[   68.278379][ T4483]  ? __pfx___mutex_lock+0x10/0x10
[   68.284407][ T4483]  z_erofs_decompress_queue+0x1e30/0x3960
[   68.290984][ T4483]  ? __pfx_z_erofs_decompress_queue+0x10/0x10
[   68.298430][ T4483]  ? mark_lock+0x2a4/0x350
[   68.303373][ T4483]  ? __pfx_lock_acquire+0x10/0x10
[   68.308980][ T4483]  ? lockdep_hardirqs_on_prepare+0x43d/0x780
[   68.317138][ T4483]  z_erofs_decompressqueue_work+0x99/0xe0
[   68.324744][ T4483]  ? __pfx_z_erofs_decompressqueue_work+0x10/0x10
[   68.332008][ T4483]  ? process_scheduled_works+0x945/0x1830
[   68.338674][ T4483]  process_scheduled_works+0xa2c/0x1830
[   68.344631][ T4483]  ? __pfx_process_scheduled_works+0x10/0x10
[   68.352160][ T4483]  ? assign_work+0x364/0x3d0
[   68.357042][ T4483]  worker_thread+0x86d/0xd70
[   68.362025][ T4483]  ? _raw_spin_unlock_irqrestore+0xdd/0x140
[   68.367925][ T4483]  ? __kthread_parkme+0x169/0x1d0
openat(AT_FDCWD, "./file2", O_RDONLY)   = 4
exit_group(0)                           = ?
+++ exited with 0 +++
[   68.374004][ T4483]  ? __pfx_worker_thr