./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor4099951440 <...> Warning: Permanently added '10.128.0.115' (ED25519) to the list of known hosts. execve("./syz-executor4099951440", ["./syz-executor4099951440"], 0x7ffdbb1a0db0 /* 10 vars */) = 0 brk(NULL) = 0x5555574b5000 brk(0x5555574b5d00) = 0x5555574b5d00 arch_prctl(ARCH_SET_FS, 0x5555574b5380) = 0 set_tid_address(0x5555574b5650) = 5010 set_robust_list(0x5555574b5660, 24) = 0 rseq(0x5555574b5ca0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor4099951440", 4096) = 28 getrandom("\xbd\xf7\xbd\x89\xea\x4f\xf6\x70", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x5555574b5d00 brk(0x5555574d6d00) = 0x5555574d6d00 brk(0x5555574d7000) = 0x5555574d7000 mprotect(0x7fc1ac857000, 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 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=0x5555574b5650) = 5011 ./strace-static-x86_64: Process 5011 attached [pid 5011] set_robust_list(0x5555574b5660, 24) = 0 [pid 5011] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5011] setpgid(0, 0) = 0 [pid 5011] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5011] write(3, "1000", 4) = 4 [pid 5011] close(3) = 0 [pid 5011] memfd_create("syzkaller", 0) = 3 [pid 5011] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fc1a43a4000 [pid 5011] 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"..., 1048576) = 1048576 [pid 5011] munmap(0x7fc1a43a4000, 138412032) = 0 [pid 5011] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5011] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5011] close(3) = 0 [pid 5011] mkdir("./bus", 0777) = 0 [ 141.810958][ T5011] loop0: detected capacity change from 0 to 2048 [ 141.831904][ T5011] ======================================================= [ 141.831904][ T5011] WARNING: The mand mount option has been deprecated and [ 141.831904][ T5011] and is ignored by this kernel. Remove the mand [ 141.831904][ T5011] option from the mount to silence this warning. [pid 5011] mount("/dev/loop0", "./bus", "udf", MS_MANDLOCK, "") = 0 [pid 5011] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5011] chdir("./bus") = 0 [pid 5011] ioctl(4, LOOP_CLR_FD) = 0 [pid 5011] close(4) = 0 [ 141.831904][ T5011] ======================================================= [ 141.876062][ T5011] UDF-fs: INFO Mounting volume 'LinuxUDF', timestamp 2022/11/22 14:59 (1000) [ 141.914579][ T5011] ===================================================== [ 141.922294][ T5011] BUG: KMSAN: uninit-value in crc_itu_t+0x287/0x2e0 [ 141.929202][ T5011] crc_itu_t+0x287/0x2e0 [ 141.933631][ T5011] udf_update_tag+0x5c/0x2a0 [ 141.938569][ T5011] udf_rename+0x13dd/0x16a0 [ 141.943227][ T5011] vfs_rename+0x1a79/0x1fa0 [ 141.948015][ T5011] do_renameat2+0x1571/0x1ca0 [ 141.952967][ T5011] __x64_sys_rename+0xec/0x140 [ 141.959337][ T5011] do_syscall_64+0x44/0x110 [ 141.964064][ T5011] entry_SYSCALL_64_after_hwframe+0x63/0x6b [ 141.970298][ T5011] [ 141.972709][ T5011] Local variable diriter created at: [ 141.978353][ T5011] udf_rename+0xbb/0x16a0 [ 141.982833][ T5011] vfs_rename+0x1a79/0x1fa0 [ 141.987676][ T5011] [ 141.990090][ T5011] CPU: 0 PID: 5011 Comm: syz-executor409 Not tainted 6.7.0-rc7-syzkaller #0 [ 141.999121][ T5011] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023 [ 142.009399][ T5011] ===================================================== [ 142.016405][ T5011] Disabling lock debugging due to kernel taint [ 142.022882][ T5011] Kernel panic - not syncing: kmsan.panic set ... [ 142.029646][ T5011] CPU: 0 PID: 5011 Comm: syz-executor409 Tainted: G B 6.7.0-rc7-syzkaller #0 [ 142.039981][ T5011] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023 [ 142.050147][ T5011] Call Trace: [ 142.053686][ T5011] [ 142.056683][ T5011] dump_stack_lvl+0x1bf/0x240 [ 142.061524][ T5011] dump_stack+0x1e/0x20 [ 142.065848][ T5011] panic+0x4de/0xc90 [ 142.070038][ T5011] ? add_taint+0x108/0x1a0 [ 142.074709][ T5011] kmsan_report+0x2d0/0x2d0 [ 142.079400][ T5011] ? kmsan_internal_set_shadow_origin+0x66/0xe0 [ 142.085947][ T5011] ? __msan_warning+0x96/0x110 [ 142.090886][ T5011] ? crc_itu_t+0x287/0x2e0 [ 142.095383][ T5011] ? udf_update_tag+0x5c/0x2a0 [ 142.100346][ T5011] ? udf_rename+0x13dd/0x16a0 [ 142.105167][ T5011] ? vfs_rename+0x1a79/0x1fa0 [ 142.109994][ T5011] ? do_renameat2+0x1571/0x1ca0 [ 142.115230][ T5011] ? __x64_sys_rename+0xec/0x140 [ 142.120341][ T5011] ? do_syscall_64+0x44/0x110 [ 142.125181][ T5011] ? entry_SYSCALL_64_after_hwframe+0x63/0x6b [ 142.131479][ T5011] ? kmsan_internal_set_shadow_origin+0x66/0xe0 [ 142.137927][ T5011] ? kmsan_get_shadow_origin_ptr+0x4d/0xa0 [ 142.143885][ T5011] ? kmsan_get_shadow_origin_ptr+0x4d/0xa0 [ 142.150255][ T5011] ? kmsan_get_shadow_origin_ptr+0x4d/0xa0 [ 142.156259][ T5011] __msan_warning+0x96/0x110 [ 142.161299][ T5011] crc_itu_t+0x287/0x2e0 [ 142.165683][ T5011] udf_update_tag+0x5c/0x2a0 [ 142.170389][ T5011] udf_rename+0x13dd/0x16a0 [ 142.175163][ T5011] ? __kmem_cache_free+0x9b5/0xe80 [ 142.180422][ T5011] ? kmsan_get_shadow_origin_ptr+0x4d/0xa0 [ 142.186483][ T5011] ? udf_mknod+0x170/0x170 [ 142.191309][ T5011] vfs_rename+0x1a79/0x1fa0 [ 142.195981][ T5011] ? apparmor_path_rename+0xb9a/0xdd0 [ 142.202231][ T5011] do_renameat2+0x1571/0x1ca0 [ 142.207155][ T5011] __x64_sys_rename+0xec/0x140 [ 142.212197][ T5011] do_syscall_64+0x44/0x110 [ 142.216903][ T5011] entry_SYSCALL_64_after_hwframe+0x63/0x6b [ 142.223075][ T5011] RIP: 0033:0x7fc1ac7e2a59 [ 142.227611][ T5011] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 f1 17 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 142.247638][ T5011] RSP: 002b:00007ffd75636a78 EFLAGS: 00000246 ORIG_RAX: 0000000000000052 [ 142.256337][ T5011] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fc1ac7e2a59 [ 142.264418][ T5011] RDX: 0000000000000000 RSI: 0000000020000a40 RDI: 0000000020000300 [ 142.272528][ T5011] RBP: 00007fc1ac8575f0 R08: 0000000000000be8 R09: 00005555574b64c0 [ 142.280664][ T5011] R10: 00007ffd75636940 R11: 0000000000000246 R12: 00007ffd75636aa0 [ 142.288754][ T5011] R13: 00007ffd75636cc8 R14: 431bde82d7b634db R15: 00007fc1ac82b03b [ 142.296894][ T5011] [ 142.300356][ T5011] Kernel Offset: disabled [ 142.304822][ T5011] Rebooting in 86400 seconds..