./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor4169476278 <...> Warning: Permanently added '10.128.0.88' (ED25519) to the list of known hosts. execve("./syz-executor4169476278", ["./syz-executor4169476278"], 0x7ffeaea30170 /* 10 vars */) = 0 brk(NULL) = 0x555561092000 brk(0x555561092d00) = 0x555561092d00 arch_prctl(ARCH_SET_FS, 0x555561092380) = 0 set_tid_address(0x555561092650) = 5016 set_robust_list(0x555561092660, 24) = 0 rseq(0x555561092ca0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor4169476278", 4096) = 28 getrandom("\x7d\xaa\x11\x08\x8c\x6c\x1f\x0a", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x555561092d00 brk(0x5555610b3d00) = 0x5555610b3d00 brk(0x5555610b4000) = 0x5555610b4000 mprotect(0x7f5639fbd000, 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=0x555561092650) = 5017 ./strace-static-x86_64: Process 5017 attached [pid 5017] set_robust_list(0x555561092660, 24) = 0 [pid 5017] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5017] setpgid(0, 0) = 0 [pid 5017] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5017] write(3, "1000", 4) = 4 [pid 5017] close(3) = 0 [pid 5017] memfd_create("syzkaller", 0) = 3 [pid 5017] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f5631a00000 [pid 5017] 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 5017] munmap(0x7f5631a00000, 138412032) = 0 [pid 5017] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5017] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5017] close(3) = 0 [pid 5017] close(4) = 0 [pid 5017] mkdir("./file1", 0777) = 0 [ 150.924607][ T5017] loop0: detected capacity change from 0 to 1024 [ 150.958781][ T5017] ===================================================== [ 150.966447][ T5017] BUG: KMSAN: uninit-value in hfsplus_strcasecmp+0x1ca/0x770 [ 150.974062][ T5017] hfsplus_strcasecmp+0x1ca/0x770 [ 150.979464][ T5017] hfsplus_cat_case_cmp_key+0xde/0x190 [ 150.985143][ T5017] hfs_find_rec_by_key+0xb1/0x240 [ 150.990562][ T5017] __hfsplus_brec_find+0x26f/0x7b0 [ 150.996034][ T5017] hfsplus_brec_find+0x445/0x970 [ 151.001205][ T5017] hfsplus_brec_read+0x46/0x1a0 [ 151.006370][ T5017] hfsplus_fill_super+0x199e/0x2700 [ 151.011852][ T5017] mount_bdev+0x397/0x520 [ 151.016473][ T5017] hfsplus_mount+0x4d/0x60 [ 151.021068][ T5017] legacy_get_tree+0x114/0x290 [ 151.026098][ T5017] vfs_get_tree+0xa7/0x570 [ 151.030727][ T5017] do_new_mount+0x71f/0x15e0 [ 151.035536][ T5017] path_mount+0x742/0x1f20 [ 151.040285][ T5017] __se_sys_mount+0x725/0x810 [ 151.045162][ T5017] __x64_sys_mount+0xe4/0x150 [ 151.050127][ T5017] do_syscall_64+0xd5/0x1f0 [ 151.054865][ T5017] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 151.061031][ T5017] [ 151.063445][ T5017] Uninit was created at: [ 151.068024][ T5017] __kmalloc+0x6e4/0x1000 [ 151.072567][ T5017] hfsplus_find_init+0x91/0x250 [ 151.077668][ T5017] hfsplus_fill_super+0x1688/0x2700 [ 151.083039][ T5017] mount_bdev+0x397/0x520 [ 151.087609][ T5017] hfsplus_mount+0x4d/0x60 [ 151.092205][ T5017] legacy_get_tree+0x114/0x290 [ 151.097310][ T5017] vfs_get_tree+0xa7/0x570 [ 151.101944][ T5017] do_new_mount+0x71f/0x15e0 [ 151.106855][ T5017] path_mount+0x742/0x1f20 [ 151.111457][ T5017] __se_sys_mount+0x725/0x810 [ 151.116575][ T5017] __x64_sys_mount+0xe4/0x150 [ 151.121453][ T5017] do_syscall_64+0xd5/0x1f0 [ 151.126212][ T5017] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 151.132352][ T5017] [ 151.134799][ T5017] CPU: 1 PID: 5017 Comm: syz-executor416 Not tainted 6.9.0-rc1-syzkaller-00061-g8d025e2092e2 #0 [ 151.145493][ T5017] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024 [ 151.155797][ T5017] ===================================================== [ 151.162978][ T5017] Disabling lock debugging due to kernel taint [ 151.169331][ T5017] Kernel panic - not syncing: kmsan.panic set ... [ 151.175879][ T5017] CPU: 1 PID: 5017 Comm: syz-executor416 Tainted: G B 6.9.0-rc1-syzkaller-00061-g8d025e2092e2 #0 [ 151.187980][ T5017] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024 [ 151.198168][ T5017] Call Trace: [ 151.201540][ T5017] [ 151.204562][ T5017] dump_stack_lvl+0x216/0x2d0 [ 151.209373][ T5017] ? kmsan_get_shadow_origin_ptr+0x4d/0xb0 [ 151.215358][ T5017] dump_stack+0x1e/0x30 [ 151.219715][ T5017] panic+0x4e2/0xcd0 [ 151.223821][ T5017] ? kmsan_get_metadata+0x101/0x1d0 [ 151.229231][ T5017] kmsan_report+0x2d5/0x2e0 [ 151.233980][ T5017] ? __msan_warning+0x95/0x120 [ 151.238896][ T5017] ? hfsplus_strcasecmp+0x1ca/0x770 [ 151.244256][ T5017] ? hfsplus_cat_case_cmp_key+0xde/0x190 [ 151.250093][ T5017] ? hfs_find_rec_by_key+0xb1/0x240 [ 151.255455][ T5017] ? __hfsplus_brec_find+0x26f/0x7b0 [ 151.261330][ T5017] ? hfsplus_brec_find+0x445/0x970 [ 151.266652][ T5017] ? hfsplus_brec_read+0x46/0x1a0 [ 151.271832][ T5017] ? hfsplus_fill_super+0x199e/0x2700 [ 151.277395][ T5017] ? mount_bdev+0x397/0x520 [ 151.282046][ T5017] ? hfsplus_mount+0x4d/0x60 [ 151.286760][ T5017] ? legacy_get_tree+0x114/0x290 [ 151.291851][ T5017] ? vfs_get_tree+0xa7/0x570 [ 151.296565][ T5017] ? do_new_mount+0x71f/0x15e0 [ 151.301463][ T5017] ? path_mount+0x742/0x1f20 [ 151.306249][ T5017] ? __se_sys_mount+0x725/0x810 [ 151.311306][ T5017] ? __x64_sys_mount+0xe4/0x150 [ 151.316529][ T5017] ? do_syscall_64+0xd5/0x1f0 [ 151.321335][ T5017] ? entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 151.327542][ T5017] ? kmsan_get_metadata+0x146/0x1d0 [ 151.332894][ T5017] ? kmsan_internal_set_shadow_origin+0x66/0xe0 [ 151.339274][ T5017] ? kmsan_get_metadata+0x146/0x1d0 [ 151.344575][ T5017] ? kmsan_get_shadow_origin_ptr+0x4d/0xb0 [ 151.350607][ T5017] ? kmsan_get_metadata+0x146/0x1d0 [ 151.355932][ T5017] ? kmsan_get_shadow_origin_ptr+0x4d/0xb0 [ 151.361982][ T5017] ? hfsplus_bnode_read_u16+0x3e/0x2b0 [ 151.367581][ T5017] ? filter_irq_stacks+0x60/0x1a0 [ 151.372801][ T5017] ? kmsan_get_metadata+0x146/0x1d0 [ 151.378154][ T5017] ? kmsan_get_shadow_origin_ptr+0x4d/0xb0 [ 151.384136][ T5017] __msan_warning+0x95/0x120 [ 151.389042][ T5017] hfsplus_strcasecmp+0x1ca/0x770 [ 151.394470][ T5017] hfsplus_cat_case_cmp_key+0xde/0x190 [ 151.400088][ T5017] hfs_find_rec_by_key+0xb1/0x240 [ 151.405327][ T5017] ? __pfx_hfsplus_cat_case_cmp_key+0x10/0x10 [ 151.411551][ T5017] __hfsplus_brec_find+0x26f/0x7b0 [ 151.416871][ T5017] ? __pfx_hfs_find_rec_by_key+0x10/0x10 [ 151.422942][ T5017] hfsplus_brec_find+0x445/0x970 [ 151.428034][ T5017] ? __pfx_hfs_find_rec_by_key+0x10/0x10 [ 151.433853][ T5017] hfsplus_brec_read+0x46/0x1a0 [ 151.438937][ T5017] hfsplus_fill_super+0x199e/0x2700 [ 151.444300][ T5017] ? kmsan_get_metadata+0x146/0x1d0 [ 151.449626][ T5017] ? kmsan_get_shadow_origin_ptr+0x4d/0xb0 [ 151.456119][ T5017] ? vsnprintf+0x2994/0x2a00 [ 151.460952][ T5017] ? kmsan_internal_set_shadow_origin+0x66/0xe0 [ 151.467632][ T5017] ? kmsan_get_metadata+0x146/0x1d0 [ 151.473020][ T5017] ? kmsan_get_shadow_origin_ptr+0x4d/0xb0 [ 151.479085][ T5017] ? kmsan_get_metadata+0x146/0x1d0 [ 151.484511][ T5017] mount_bdev+0x397/0x520 [ 151.489018][ T5017] ? __pfx_hfsplus_fill_super+0x10/0x10 [ 151.494741][ T5017] hfsplus_mount+0x4d/0x60 [ 151.499323][ T5017] legacy_get_tree+0x114/0x290 [ 151.504335][ T5017] ? __pfx_hfsplus_mount+0x10/0x10 [ 151.509734][ T5017] ? __pfx_legacy_get_tree+0x10/0x10 [ 151.515148][ T5017] vfs_get_tree+0xa7/0x570 [ 151.519711][ T5017] ? mount_capable+0x97/0x120 [ 151.524533][ T5017] do_new_mount+0x71f/0x15e0 [ 151.529274][ T5017] ? kmsan_get_metadata+0x146/0x1d0 [ 151.534675][ T5017] path_mount+0x742/0x1f20 [ 151.539303][ T5017] ? user_path_at_empty+0x325/0x3a0 [ 151.544688][ T5017] __se_sys_mount+0x725/0x810 [ 151.549501][ T5017] __x64_sys_mount+0xe4/0x150 [ 151.554332][ T5017] do_syscall_64+0xd5/0x1f0 [ 151.559040][ T5017] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 151.565115][ T5017] RIP: 0033:0x7f5639f4adaa [ 151.569612][ T5017] Code: d8 64 89 02 48 c7 c0 ff ff ff ff eb a6 e8 5e 04 00 00 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 151.589381][ T5017] RSP: 002b:00007ffcd4885968 EFLAGS: 00000286 ORIG_RAX: 00000000000000a5 [ 151.598082][ T5017] RAX: ffffffffffffffda RBX: 00007ffcd4885980 RCX: 00007f5639f4adaa [ 151.606219][ T5017] RDX: 0000000020000080 RSI: 0000000020000140 RDI: 00007ffcd4885980 [ 151.614340][ T5017] RBP: 0000000000000004 R08: 00007ffcd48859c0 R09: 000000000000066c [ 151.622555][ T5017] R10: 0000000003000c00 R11: 0000000000000286 R12: 0000000003000c00 [ 151.630682][ T5017] R13: 00007ffcd48859c0 R14: 0000000000000003 R15: 0000000000080000 [ 151.638848][ T5017] [ 151.642150][ T5017] Kernel Offset: disabled [ 151.646555][ T5017] Rebooting in 86400 seconds..