./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor321982035 <...> Warning: Permanently added '10.128.1.150' (ED25519) to the list of known hosts. execve("./syz-executor321982035", ["./syz-executor321982035"], 0x7ffe62bd7720 /* 10 vars */) = 0 brk(NULL) = 0x5555814a8000 brk(0x5555814a8d00) = 0x5555814a8d00 arch_prctl(ARCH_SET_FS, 0x5555814a8380) = 0 set_tid_address(0x5555814a8650) = 5782 set_robust_list(0x5555814a8660, 24) = 0 rseq(0x5555814a8ca0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor321982035", 4096) = 27 getrandom("\xb4\xa8\x62\xf6\x42\x62\x71\xf3", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x5555814a8d00 brk(0x5555814c9d00) = 0x5555814c9d00 brk(0x5555814ca000) = 0x5555814ca000 mprotect(0x7f01e2fb5000, 16384, PROT_READ) = 0 mmap(0x3ffffffff000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x3ffffffff000 mmap(0x400000000000, 16777216, PROT_READ|PROT_WRITE|PROT_EXEC, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x400000000000 mmap(0x400001000000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x400001000000 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555814a8650) = 5783 ./strace-static-x86_64: Process 5783 attached [pid 5783] set_robust_list(0x5555814a8660, 24) = 0 [pid 5783] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5783] setpgid(0, 0) = 0 [pid 5783] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5783] write(3, "1000", 4executing program ) = 4 [pid 5783] close(3) = 0 [pid 5783] write(1, "executing program\n", 18) = 18 [pid 5783] memfd_create("syzkaller", 0) = 3 [pid 5783] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f01daa00000 [pid 5783] write(3, "\x02\x02\x02\x02\x02\x02\x02\x02\x74\x68\x69\x73\x20\x69\x73\x20\x61\x6e\x20\x6f\x63\x66\x73\x32\x20\x76\x6f\x6c\x75\x6d\x65\x00\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02"..., 16777216) = 16777216 [pid 5783] munmap(0x7f01daa00000, 138412032) = 0 [pid 5783] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5783] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5783] close(3) = 0 [pid 5783] close(4) = 0 [pid 5783] mkdir("./file0", 0777) = 0 [ 208.611970][ T5783] loop0: detected capacity change from 0 to 32768 [ 208.639403][ T5783] (syz-executor321,5783,1):ocfs2_block_check_validate:402 ERROR: CRC32 failed: stored: 0xb3775c19, computed 0x2dd1c265. Applying ECC. [pid 5783] mount("/dev/loop0", "./file0", "ocfs2", MS_RELATIME, "usrquota,coherency=full,errors=continue,heartbeat=none,errors=continue,nointr,grpquota,") = 0 [pid 5783] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [ 208.655861][ T5783] (syz-executor321,5783,1):ocfs2_block_check_validate:402 ERROR: CRC32 failed: stored: 0xb3775c19, computed 0x2dd1c265. Applying ECC. [ 208.696295][ T5783] JBD2: Ignoring recovery information on journal [pid 5783] chdir("./file0") = 0 [pid 5783] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [ 208.743837][ T5783] ocfs2: Mounting device (7,0) on (node local, slot 0) with ordered data mode. [ 208.768905][ T3555] ocfs2: Finishing quota recovery on device (7,0) for slot 0 [ 208.777058][ T3555] ===================================================== [pid 5783] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_SYNC|O_LARGEFILE|O_NOATIME|0x3c, 000) = 4 [pid 5783] fallocate(4, 0, 0, 1048820) = 0 [pid 5783] exit_group(0) = ? [pid 5783] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5783, si_uid=0, si_status=0, si_utime=7 /* 0.07 s */, si_stime=63 /* 0.63 s */} --- [ 208.788474][ T3555] BUG: KMSAN: uninit-value in _find_next_bit+0x11c/0x130 [ 208.796130][ T3555] _find_next_bit+0x11c/0x130 [ 208.801024][ T3555] ocfs2_finish_quota_recovery+0xc4f/0x3ea0 [ 208.808189][ T3555] ocfs2_complete_recovery+0x229f/0x38a0 [ 208.814131][ T3555] process_scheduled_works+0xc1a/0x1e80 [ 208.820082][ T3555] worker_thread+0xea7/0x14f0 [ 208.825330][ T3555] kthread+0x6b9/0xef0 [ 208.829626][ T3555] ret_from_fork+0x6d/0x90 [ 208.834277][ T3555] ret_from_fork_asm+0x1a/0x30 [ 208.839448][ T3555] restart_syscall(<... resuming interrupted clone ...>) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555814a8650) = 5787 ./strace-static-x86_64: Process 5787 attached [pid 5787] set_robust_list(0x5555814a8660, 24) = 0 [pid 5787] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5787] setpgid(0, 0) = 0 [pid 5787] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [ 208.841892][ T3555] Uninit was created at: [ 208.846528][ T3555] __kmalloc_noprof+0x923/0x1230 [ 208.855155][ T3555] ocfs2_recovery_load_quota+0x415/0x1150 [ 208.862221][ T3555] ocfs2_local_read_info+0x139e/0x2c10 [ 208.868966][ T3555] dquot_load_quota_sb+0xa35/0xdc0 [ 208.875295][ T3555] dquot_load_quota_inode+0x662/0x9f0 [ 208.880904][ T3555] ocfs2_enable_quotas+0x1d4/0x6e0 [ 208.886661][ T3555] ocfs2_fill_super+0xa6b7/0xb550 [pid 5787] write(3, "1000", 4executing program ) = 4 [pid 5787] close(3) = 0 [pid 5787] write(1, "executing program\n", 18) = 18 [pid 5787] memfd_create("syzkaller", 0) = 3 [pid 5787] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f01daa00000 [ 208.893477][ T3555] get_tree_bdev_flags+0x6ec/0x910 [ 208.899316][ T3555] get_tree_bdev+0x37/0x50 [ 208.904888][ T3555] ocfs2_get_tree+0x34/0x40 [ 208.910539][ T3555] vfs_get_tree+0xb1/0x5a0 [ 208.915661][ T3555] do_new_mount+0x71f/0x15e0 [ 208.921077][ T3555] path_mount+0x742/0x1f10 [ 208.926202][ T3555] __se_sys_mount+0x71f/0x800 [ 208.932032][ T3555] __x64_sys_mount+0xe4/0x150 [ 208.937960][ T3555] x64_sys_call+0x39bf/0x3c30 [ 208.943733][ T3555] do_syscall_64+0xcd/0x1e0 [ 208.948874][ T3555] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 208.958465][ T3555] [ 208.960954][ T3555] CPU: 0 UID: 0 PID: 3555 Comm: kworker/u8:11 Not tainted 6.14.0-rc7-syzkaller-00067-g76b6905c11fd #0 [ 208.972249][ T3555] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025 [ 208.982686][ T3555] Workqueue: ocfs2_wq ocfs2_complete_recovery [ 208.989173][ T3555] ===================================================== [ 208.996443][ T3555] Disabling lock debugging due to kernel taint [ 209.002737][ T3555] Kernel panic - not syncing: kmsan.panic set ... [ 209.009315][ T3555] CPU: 0 UID: 0 PID: 3555 Comm: kworker/u8:11 Tainted: G B 6.14.0-rc7-syzkaller-00067-g76b6905c11fd #0 [ 209.021993][ T3555] Tainted: [B]=BAD_PAGE [ 209.026272][ T3555] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025 [ 209.036534][ T3555] Workqueue: ocfs2_wq ocfs2_complete_recovery [ 209.042903][ T3555] Call Trace: [ 209.046365][ T3555] [ 209.049446][ T3555] dump_stack_lvl+0x216/0x2d0 [ 209.054342][ T3555] ? kmsan_get_shadow_origin_ptr+0x4d/0xb0 [ 209.060474][ T3555] dump_stack+0x1e/0x24 [ 209.064828][ T3555] panic+0x4e2/0xcf0 [ 209.068974][ T3555] ? kmsan_get_metadata+0x61/0x1c0 [ 209.074387][ T3555] kmsan_report+0x2c7/0x2d0 [ 209.079159][ T3555] ? ocfs2_read_blocks+0x1b65/0x1f00 [ 209.084699][ T3555] ? __pfx_ocfs2_validate_quota_block+0x10/0x10 [ 209.091203][ T3555] ? __msan_warning+0x95/0x120 [ 209.096212][ T3555] ? _find_next_bit+0x11c/0x130 [ 209.101264][ T3555] ? ocfs2_finish_quota_recovery+0xc4f/0x3ea0 [ 209.107578][ T3555] ? ocfs2_complete_recovery+0x229f/0x38a0 [ 209.113664][ T3555] ? process_scheduled_works+0xc1a/0x1e80 [ 209.119670][ T3555] ? worker_thread+0xea7/0x14f0 [ 209.124737][ T3555] ? kthread+0x6b9/0xef0 [ 209.129200][ T3555] ? ret_from_fork+0x6d/0x90 [ 209.134015][ T3555] ? ret_from_fork_asm+0x1a/0x30 [ 209.139195][ T3555] ? ocfs2_read_virt_blocks+0x786/0xe10 [ 209.145031][ T3555] ? __pfx_ocfs2_validate_quota_block+0x10/0x10 [ 209.151526][ T3555] ? kmsan_get_metadata+0x13e/0x1c0 [ 209.156978][ T3555] ? kmsan_get_shadow_origin_ptr+0x4d/0xb0 [ 209.163040][ T3555] ? kmsan_get_metadata+0x13e/0x1c0 [ 209.168500][ T3555] ? kmsan_get_shadow_origin_ptr+0x4d/0xb0 [ 209.174578][ T3555] __msan_warning+0x95/0x120 [ 209.179411][ T3555] _find_next_bit+0x11c/0x130 [ 209.184315][ T3555] ocfs2_finish_quota_recovery+0xc4f/0x3ea0 [ 209.190601][ T3555] ? kmsan_get_metadata+0x13e/0x1c0 [ 209.196085][ T3555] ocfs2_complete_recovery+0x229f/0x38a0 [ 209.202004][ T3555] ? __pfx_ocfs2_orphan_filldir+0x10/0x10 [ 209.208042][ T3555] ? __pfx_ocfs2_complete_recovery+0x10/0x10 [ 209.214302][ T3555] process_scheduled_works+0xc1a/0x1e80 [ 209.220183][ T3555] worker_thread+0xea7/0x14f0 [ 209.225095][ T3555] kthread+0x6b9/0xef0 [ 209.229389][ T3555] ? __pfx_worker_thread+0x10/0x10 [ 209.234729][ T3555] ? __pfx_kthread+0x10/0x10 [ 209.239551][ T3555] ret_from_fork+0x6d/0x90 [ 209.244194][ T3555] ? __pfx_kthread+0x10/0x10 [ 209.249024][ T3555] ret_from_fork_asm+0x1a/0x30 [ 209.254098][ T3555] [ 209.257633][ T3555] Kernel Offset: disabled [ 209.262058][ T3555] Rebooting in 86400 seconds..