./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor2070672619 <...> Warning: Permanently added '10.128.0.68' (ED25519) to the list of known hosts. execve("./syz-executor2070672619", ["./syz-executor2070672619"], 0x7fff816b8940 /* 10 vars */) = 0 brk(NULL) = 0x555581425000 brk(0x555581425d00) = 0x555581425d00 arch_prctl(ARCH_SET_FS, 0x555581425380) = 0 set_tid_address(0x555581425650) = 5783 set_robust_list(0x555581425660, 24) = 0 rseq(0x555581425ca0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor2070672619", 4096) = 28 getrandom("\x4a\x15\xd1\x46\x6f\xcc\xfc\x56", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x555581425d00 brk(0x555581446d00) = 0x555581446d00 brk(0x555581447000) = 0x555581447000 mprotect(0x7fd1e2f78000, 16384, PROT_READ) = 0 mmap(0x1ffffffff000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x1ffffffff000 mmap(0x200000000000, 16777216, PROT_READ|PROT_WRITE|PROT_EXEC, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x200000000000 mmap(0x200001000000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x200001000000 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=0x555581425650) = 5784 ./strace-static-x86_64: Process 5784 attached [pid 5784] set_robust_list(0x555581425660, 24) = 0 [pid 5784] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5784] setpgid(0, 0) = 0 [pid 5784] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5784] write(3, "1000", 4) = 4 [pid 5784] close(3) = 0 executing program [pid 5784] write(1, "executing program\n", 18) = 18 [pid 5784] memfd_create("syzkaller", 0) = 3 [pid 5784] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd1daa00000 [pid 5784] 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"..., 903168) = 903168 [pid 5784] munmap(0x7fd1daa00000, 138412032) = 0 [pid 5784] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5784] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5784] close(3) = 0 [pid 5784] close(4) = 0 [pid 5784] mkdir("./file0", 0777) = 0 [pid 5784] mount("/dev/loop0", "./file0", "iso9660", MS_RDONLY, "norock,hide,uid=0x0000000000000000,cruft,mode=0x0000000000000001,overriderockperm,utf8,check=relaxed"...) = 0 [ 179.623569][ T5784] loop0: detected capacity change from 0 to 1764 [pid 5784] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5784] chdir("./file0") = 0 [pid 5784] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5784] openat(AT_FDCWD, "/dev/loop0", O_RDONLY|O_APPEND|O_NOFOLLOW|FASYNC) = 4 [pid 5784] ioctl(4, LOOP_SET_STATUS, {lo_number=0, lo_offset=0x3, lo_encrypt_type=LO_CRYPT_CRYPTOAPI, lo_encrypt_key_size=0, lo_flags=LO_FLAGS_PARTSCAN|LO_FLAGS_DIRECT_IO, lo_name="\x6a\x95\x9f\x16\xb6\x78\x7b\x08\xae\x26\xe6\x6c\x40\x56\xa5\x16\x95\x28\x48\x54\xc2\x82\xec\x6b\xcf\xee\xf4\xfb\x0e\xfc\xc1\xd1\xa6\x07\x8e\xd9\x8e\x03\x3f\xd5\xf0\x64\x39\x02\xdd\x8f\x6f\xac\x27\x4d\xe9\xd9\x40\xbb\xa5\xe5\x92\xbb\xd4\xce\x85\x45\x0d", lo_encrypt_key="", ...}) = 0 [pid 5784] open(".", O_RDONLY) = 5 [pid 5784] lseek(5, 2047, SEEK_SET) = 2047 [ 179.767378][ T5784] loop0: detected capacity change from 1764 to 1763 [ 179.806447][ T5784] ===================================================== [ 179.813826][ T5784] BUG: KMSAN: uninit-value in isofs_readdir+0xa33/0x2610 [ 179.821309][ T5784] isofs_readdir+0xa33/0x2610 [ 179.826196][ T5784] iterate_dir+0x740/0x930 [ 179.830943][ T5784] __se_sys_getdents64+0x170/0x540 [ 179.836217][ T5784] __x64_sys_getdents64+0x96/0xe0 [ 179.841499][ T5784] x64_sys_call+0x3b0f/0x3c30 [ 179.846338][ T5784] do_syscall_64+0xcd/0x1e0 [ 179.851132][ T5784] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 179.857313][ T5784] [ 179.859721][ T5784] Uninit was created at: [ 179.864205][ T5784] __alloc_frozen_pages_noprof+0x9a7/0xe00 [ 179.870300][ T5784] alloc_pages_mpol+0x4cd/0x890 [ 179.875327][ T5784] alloc_pages_noprof+0x1b5/0x250 [ 179.880643][ T5784] get_free_pages_noprof+0x34/0xc0 [ 179.885958][ T5784] isofs_readdir+0x74/0x2610 [ 179.890921][ T5784] iterate_dir+0x740/0x930 [ 179.895492][ T5784] __se_sys_getdents64+0x170/0x540 [ 179.900868][ T5784] __x64_sys_getdents64+0x96/0xe0 [ 179.906066][ T5784] x64_sys_call+0x3b0f/0x3c30 [ 179.911010][ T5784] do_syscall_64+0xcd/0x1e0 [ 179.915658][ T5784] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 179.922138][ T5784] [ 179.924589][ T5784] CPU: 0 UID: 0 PID: 5784 Comm: syz-executor207 Not tainted 6.14.0-rc1-syzkaller-00028-g5c8c229261f1 #0 [ 179.935993][ T5784] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024 [ 179.946389][ T5784] ===================================================== [ 179.953652][ T5784] Disabling lock debugging due to kernel taint [ 179.960124][ T5784] Kernel panic - not syncing: kmsan.panic set ... [ 179.966670][ T5784] CPU: 0 UID: 0 PID: 5784 Comm: syz-executor207 Tainted: G B 6.14.0-rc1-syzkaller-00028-g5c8c229261f1 #0 [ 179.979462][ T5784] Tainted: [B]=BAD_PAGE [ 179.983711][ T5784] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024 [ 179.993914][ T5784] Call Trace: [ 179.997314][ T5784] [ 180.000345][ T5784] dump_stack_lvl+0x216/0x2d0 [ 180.005185][ T5784] ? kmsan_get_shadow_origin_ptr+0x4d/0xb0 [ 180.011184][ T5784] dump_stack+0x1e/0x24 [ 180.015490][ T5784] panic+0x4e2/0xcf0 [ 180.019587][ T5784] ? kmsan_get_metadata+0x81/0x1c0 [ 180.024893][ T5784] kmsan_report+0x2c7/0x2d0 [ 180.029567][ T5784] ? kmsan_get_metadata+0x13e/0x1c0 [ 180.034971][ T5784] ? __wait_on_bit+0x1f8/0x4b0 [ 180.039928][ T5784] ? __msan_warning+0x95/0x120 [ 180.044851][ T5784] ? isofs_readdir+0xa33/0x2610 [ 180.049909][ T5784] ? iterate_dir+0x740/0x930 [ 180.054665][ T5784] ? __se_sys_getdents64+0x170/0x540 [ 180.060125][ T5784] ? __x64_sys_getdents64+0x96/0xe0 [ 180.065498][ T5784] ? x64_sys_call+0x3b0f/0x3c30 [ 180.070532][ T5784] ? do_syscall_64+0xcd/0x1e0 [ 180.075376][ T5784] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 180.081653][ T5784] ? __pfx_bit_wait_io+0x10/0x10 [ 180.086790][ T5784] ? kmsan_get_shadow_origin_ptr+0x4d/0xb0 [ 180.092805][ T5784] ? out_of_line_wait_on_bit+0x13c/0x170 [ 180.098658][ T5784] ? __pfx_wake_bit_function+0x10/0x10 [ 180.104301][ T5784] ? __pfx_bit_wait_io+0x10/0x10 [ 180.109436][ T5784] ? __bread_gfp+0x4d8/0x730 [ 180.114199][ T5784] ? kmsan_get_metadata+0x13e/0x1c0 [ 180.119578][ T5784] ? kmsan_internal_memmove_metadata+0x91/0x230 [ 180.126047][ T5784] ? kmsan_get_metadata+0x13e/0x1c0 [ 180.131431][ T5784] ? kmsan_get_shadow_origin_ptr+0x4d/0xb0 [ 180.137440][ T5784] __msan_warning+0x95/0x120 [ 180.142197][ T5784] isofs_readdir+0xa33/0x2610 [ 180.147085][ T5784] ? aa_file_perm+0x3de/0x1780 [ 180.152057][ T5784] ? kmsan_internal_set_shadow_origin+0x69/0x100 [ 180.158652][ T5784] ? __pfx_isofs_readdir+0x10/0x10 [ 180.163975][ T5784] iterate_dir+0x740/0x930 [ 180.168552][ T5784] ? kmsan_get_metadata+0x13e/0x1c0 [ 180.173935][ T5784] ? kmsan_get_shadow_origin_ptr+0x4d/0xb0 [ 180.179939][ T5784] __se_sys_getdents64+0x170/0x540 [ 180.185223][ T5784] ? kmsan_get_metadata+0x13e/0x1c0 [ 180.190601][ T5784] ? __pfx_filldir64+0x10/0x10 [ 180.195534][ T5784] ? kmsan_get_shadow_origin_ptr+0x4d/0xb0 [ 180.201531][ T5784] __x64_sys_getdents64+0x96/0xe0 [ 180.206728][ T5784] x64_sys_call+0x3b0f/0x3c30 [ 180.211580][ T5784] do_syscall_64+0xcd/0x1e0 [ 180.216235][ T5784] ? clear_bhb_loop+0x25/0x80 [ 180.221107][ T5784] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 180.227215][ T5784] RIP: 0033:0x7fd1e2f03f99 [ 180.231771][ T5784] 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 [ 180.251572][ T5784] RSP: 002b:00007ffc8e3b01d8 EFLAGS: 00000246 ORIG_RAX: 00000000000000d9 [ 180.260185][ T5784] RAX: ffffffffffffffda RBX: 00002000000000c0 RCX: 00007fd1e2f03f99 [ 180.268315][ T5784] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000005 [ 180.276464][ T5784] RBP: 00007fd1e2f785f0 R08: 00005555814264c0 R09: 00005555814264c0 [ 180.284631][ T5784] R10: 00005555814264c0 R11: 0000000000000246 R12: 00007ffc8e3b0200 [ 180.292749][ T5784] R13: 00007ffc8e3b0428 R14: 431bde82d7b634db R15: 00007fd1e2f4d03b [ 180.300897][ T5784] [ 180.304298][ T5784] Kernel Offset: disabled [ 180.308683][ T5784] Rebooting in 86400 seconds..