./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor3714169189 <...> Warning: Permanently added '10.128.0.25' (ED25519) to the list of known hosts. execve("./syz-executor3714169189", ["./syz-executor3714169189"], 0x7ffcb97ce9f0 /* 10 vars */) = 0 brk(NULL) = 0x55555732d000 brk(0x55555732dd00) = 0x55555732dd00 arch_prctl(ARCH_SET_FS, 0x55555732d380) = 0 set_tid_address(0x55555732d650) = 5002 set_robust_list(0x55555732d660, 24) = 0 rseq(0x55555732dca0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor3714169189", 4096) = 28 getrandom("\xa5\x40\xd6\x75\xa3\xd3\xc0\xad", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x55555732dd00 brk(0x55555734ed00) = 0x55555734ed00 brk(0x55555734f000) = 0x55555734f000 mprotect(0x7fa0711f2000, 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=0x55555732d650) = 5003 ./strace-static-x86_64: Process 5003 attached [pid 5003] set_robust_list(0x55555732d660, 24) = 0 [pid 5003] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5003] setpgid(0, 0) = 0 [pid 5003] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5003] write(3, "1000", 4) = 4 [pid 5003] close(3) = 0 [pid 5003] memfd_create("syzkaller", 0) = 3 [pid 5003] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fa068d40000 [pid 5003] 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"..., 524288) = 524288 [pid 5003] munmap(0x7fa068d40000, 138412032) = 0 [pid 5003] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5003] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5003] close(3) = 0 [pid 5003] mkdir("./file0aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 0777) = 0 [pid 5003] mount("/dev/loop0", "./file0aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", "hfsplus", MS_SYNCHRONOUS|MS_NOATIME|MS_POSIXACL, "") = 0 [ 158.183502][ T5003] loop0: detected capacity change from 0 to 1024 [pid 5003] openat(AT_FDCWD, "./file0aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", O_RDONLY|O_DIRECTORY) = 3 [pid 5003] chdir("./file0aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa") = 0 [pid 5003] ioctl(4, LOOP_CLR_FD) = 0 [pid 5003] close(4) = 0 [pid 5003] openat(AT_FDCWD, "memory.stat", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [ 158.277234][ T5003] ===================================================== [ 158.284951][ T5003] BUG: KMSAN: uninit-value in __hfsplus_ext_cache_extent+0x82a/0x960 [ 158.293513][ T5003] __hfsplus_ext_cache_extent+0x82a/0x960 [ 158.299475][ T5003] hfsplus_file_extend+0x775/0x1b90 [ 158.305038][ T5003] hfsplus_get_block+0xe99/0x1690 [ 158.310292][ T5003] __block_write_begin_int+0x946/0x2c70 [ 158.316158][ T5003] block_write_begin+0x143/0x450 [ 158.321472][ T5003] cont_write_begin+0xd5c/0x12f0 [ 158.326603][ T5003] hfsplus_write_begin+0x9a/0x130 [ 158.332011][ T5003] generic_perform_write+0x3f5/0xc40 [ 158.337531][ T5003] __generic_file_write_iter+0x20a/0x460 [ 158.343769][ T5003] generic_file_write_iter+0x103/0x5b0 [ 158.349471][ T5003] vfs_write+0x8ef/0x1490 [ 158.354288][ T5003] ksys_write+0x20f/0x4c0 [ 158.358785][ T5003] __x64_sys_write+0x93/0xd0 [ 158.363741][ T5003] do_syscall_64+0x44/0x110 [ 158.368464][ T5003] entry_SYSCALL_64_after_hwframe+0x63/0x6b [ 158.374859][ T5003] [ 158.377279][ T5003] Uninit was created at: [ 158.381856][ T5003] slab_post_alloc_hook+0x129/0xa70 [ 158.387226][ T5003] __kmem_cache_alloc_node+0x5c9/0x970 [ 158.392948][ T5003] __kmalloc+0x121/0x3c0 [ 158.397306][ T5003] hfsplus_find_init+0x91/0x250 [ 158.402452][ T5003] hfsplus_file_extend+0x6d8/0x1b90 [ 158.407893][ T5003] hfsplus_get_block+0xe99/0x1690 [ 158.413233][ T5003] __block_write_begin_int+0x946/0x2c70 [ 158.418957][ T5003] block_write_begin+0x143/0x450 [ 158.424226][ T5003] cont_write_begin+0xd5c/0x12f0 [ 158.429330][ T5003] hfsplus_write_begin+0x9a/0x130 [ 158.434599][ T5003] generic_perform_write+0x3f5/0xc40 [ 158.440116][ T5003] __generic_file_write_iter+0x20a/0x460 [ 158.447661][ T5003] generic_file_write_iter+0x103/0x5b0 [ 158.453482][ T5003] vfs_write+0x8ef/0x1490 [ 158.457969][ T5003] ksys_write+0x20f/0x4c0 [ 158.462609][ T5003] __x64_sys_write+0x93/0xd0 [ 158.467375][ T5003] do_syscall_64+0x44/0x110 [ 158.472225][ T5003] entry_SYSCALL_64_after_hwframe+0x63/0x6b [ 158.478360][ T5003] [ 158.480952][ T5003] CPU: 0 PID: 5003 Comm: syz-executor371 Not tainted 6.7.0-rc7-syzkaller-00003-gfbafc3e621c3 #0 [ 158.491642][ T5003] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023 [ 158.502045][ T5003] ===================================================== [ 158.509103][ T5003] Disabling lock debugging due to kernel taint [ 158.515474][ T5003] Kernel panic - not syncing: kmsan.panic set ... [ 158.522019][ T5003] CPU: 0 PID: 5003 Comm: syz-executor371 Tainted: G B 6.7.0-rc7-syzkaller-00003-gfbafc3e621c3 #0 [ 158.534110][ T5003] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023 [ 158.544306][ T5003] Call Trace: [ 158.547678][ T5003] [ 158.550725][ T5003] dump_stack_lvl+0x1bf/0x240 [ 158.555576][ T5003] dump_stack+0x1e/0x20 [ 158.559874][ T5003] panic+0x4de/0xc90 [ 158.564003][ T5003] ? add_taint+0x108/0x1a0 [ 158.568614][ T5003] kmsan_report+0x2d0/0x2d0 [ 158.573353][ T5003] ? kmsan_internal_set_shadow_origin+0x66/0xe0 [ 158.579810][ T5003] ? __msan_warning+0x96/0x110 [ 158.584771][ T5003] ? __hfsplus_ext_cache_extent+0x82a/0x960 [ 158.590906][ T5003] ? hfsplus_file_extend+0x775/0x1b90 [ 158.596447][ T5003] ? hfsplus_get_block+0xe99/0x1690 [ 158.601884][ T5003] ? __block_write_begin_int+0x946/0x2c70 [ 158.607787][ T5003] ? block_write_begin+0x143/0x450 [ 158.613035][ T5003] ? cont_write_begin+0xd5c/0x12f0 [ 158.618361][ T5003] ? hfsplus_write_begin+0x9a/0x130 [ 158.623821][ T5003] ? generic_perform_write+0x3f5/0xc40 [ 158.629479][ T5003] ? __generic_file_write_iter+0x20a/0x460 [ 158.635517][ T5003] ? generic_file_write_iter+0x103/0x5b0 [ 158.641386][ T5003] ? vfs_write+0x8ef/0x1490 [ 158.646054][ T5003] ? ksys_write+0x20f/0x4c0 [ 158.650815][ T5003] ? __x64_sys_write+0x93/0xd0 [ 158.655749][ T5003] ? do_syscall_64+0x44/0x110 [ 158.660649][ T5003] ? entry_SYSCALL_64_after_hwframe+0x63/0x6b [ 158.666959][ T5003] ? _raw_spin_unlock_irqrestore+0x3f/0x60 [ 158.672989][ T5003] ? kmsan_internal_set_shadow_origin+0x66/0xe0 [ 158.679420][ T5003] ? kmsan_get_shadow_origin_ptr+0x4d/0xa0 [ 158.685446][ T5003] ? hfsplus_brec_find+0x886/0x970 [ 158.690696][ T5003] ? hfs_find_1st_rec_by_cnid+0x3f0/0x3f0 [ 158.696611][ T5003] ? __hfsplus_ext_write_extent+0x53c/0x600 [ 158.702710][ T5003] ? kmsan_get_shadow_origin_ptr+0x4d/0xa0 [ 158.708745][ T5003] __msan_warning+0x96/0x110 [ 158.713496][ T5003] __hfsplus_ext_cache_extent+0x82a/0x960 [ 158.719434][ T5003] hfsplus_file_extend+0x775/0x1b90 [ 158.724930][ T5003] hfsplus_get_block+0xe99/0x1690 [ 158.730186][ T5003] ? kmsan_internal_set_shadow_origin+0x66/0xe0 [ 158.736641][ T5003] __block_write_begin_int+0x946/0x2c70 [ 158.742408][ T5003] ? __filemap_get_folio+0x1381/0x1760 [ 158.748072][ T5003] ? hfsplus_ext_write_extent+0x1e0/0x1e0 [ 158.754045][ T5003] ? kmsan_get_shadow_origin_ptr+0x38/0xa0 [ 158.760039][ T5003] block_write_begin+0x143/0x450 [ 158.765177][ T5003] ? hfsplus_ext_write_extent+0x1e0/0x1e0 [ 158.771149][ T5003] cont_write_begin+0xd5c/0x12f0 [ 158.776313][ T5003] hfsplus_write_begin+0x9a/0x130 [ 158.781584][ T5003] ? hfsplus_ext_write_extent+0x1e0/0x1e0 [ 158.787573][ T5003] ? hfsplus_show_options+0x8a0/0x8a0 [ 158.793140][ T5003] generic_perform_write+0x3f5/0xc40 [ 158.798720][ T5003] __generic_file_write_iter+0x20a/0x460 [ 158.804556][ T5003] generic_file_write_iter+0x103/0x5b0 [ 158.810267][ T5003] ? __generic_file_write_iter+0x460/0x460 [ 158.816323][ T5003] vfs_write+0x8ef/0x1490 [ 158.820857][ T5003] ksys_write+0x20f/0x4c0 [ 158.825381][ T5003] __x64_sys_write+0x93/0xd0 [ 158.830086][ T5003] do_syscall_64+0x44/0x110 [ 158.834729][ T5003] entry_SYSCALL_64_after_hwframe+0x63/0x6b [ 158.840789][ T5003] RIP: 0033:0x7fa07117ea99 [ 158.845437][ T5003] 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 [ 158.865235][ T5003] RSP: 002b:00007ffe7b2f3d68 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 158.873795][ T5003] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fa07117ea99 [ 158.881910][ T5003] RDX: 00000000fffffdef RSI: 00000000200002c0 RDI: 0000000000000004 [ 158.889993][ T5003] RBP: 00007fa0711f25f0 R08: 000055555732e4c0 R09: 000055555732e4c0 [ 158.898105][ T5003] R10: 0000000000000634 R11: 0000000000000246 R12: 00007ffe7b2f3d90 [ 158.906205][ T5003] R13: 00007ffe7b2f3fb8 R14: 431bde82d7b634db R15: 00007fa0711c703b [ 158.914343][ T5003] [ 158.917802][ T5003] Kernel Offset: disabled [ 158.922367][ T5003] Rebooting in 86400 seconds..