./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor4089991833 <...> Warning: Permanently added '10.128.1.14' (ED25519) to the list of known hosts. execve("./syz-executor4089991833", ["./syz-executor4089991833"], 0x7fffcb65c290 /* 10 vars */) = 0 brk(NULL) = 0x55555fc6d000 brk(0x55555fc6dd00) = 0x55555fc6dd00 arch_prctl(ARCH_SET_FS, 0x55555fc6d380) = 0 set_tid_address(0x55555fc6d650) = 5022 set_robust_list(0x55555fc6d660, 24) = 0 rseq(0x55555fc6dca0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor4089991833", 4096) = 28 getrandom("\x7d\x11\x6c\x0a\x7e\x41\xff\xec", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x55555fc6dd00 brk(0x55555fc8ed00) = 0x55555fc8ed00 brk(0x55555fc8f000) = 0x55555fc8f000 mprotect(0x7f4dde505000, 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./strace-static-x86_64: Process 5023 attached , child_tidptr=0x55555fc6d650) = 5023 [pid 5023] set_robust_list(0x55555fc6d660, 24) = 0 [pid 5023] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5023] setpgid(0, 0) = 0 [pid 5023] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5023] write(3, "1000", 4) = 4 [pid 5023] close(3) = 0 [pid 5023] memfd_create("syzkaller", 0) = 3 [pid 5023] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4dd6000000 [pid 5023] 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"..., 32768) = 32768 [pid 5023] munmap(0x7f4dd6000000, 138412032) = 0 [pid 5023] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5023] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5023] close(3) = 0 [pid 5023] close(4) = 0 [pid 5023] mkdir("./file1", 0777) = 0 [ 159.763503][ T5023] loop0: detected capacity change from 0 to 64 [ 159.792620][ T5023] hfs: keylen 9474 too large [ 159.797571][ T5023] ===================================================== [ 159.805204][ T5023] BUG: KMSAN: uninit-value in hfs_brec_find+0x65e/0x980 [ 159.812340][ T5023] hfs_brec_find+0x65e/0x980 [ 159.817242][ T5023] hfs_brec_read+0x3f/0x1a0 [ 159.821925][ T5023] hfs_cat_find_brec+0xe6/0x400 [ 159.827120][ T5023] hfs_fill_super+0x1f28/0x23c0 [ 159.832233][ T5023] mount_bdev+0x397/0x520 [ 159.836883][ T5023] hfs_mount+0x4d/0x60 [ 159.841129][ T5023] legacy_get_tree+0x114/0x290 [ 159.846596][ T5023] vfs_get_tree+0xa7/0x570 [ 159.851231][ T5023] do_new_mount+0x71f/0x15e0 [ 159.856229][ T5023] path_mount+0x742/0x1f20 [ 159.860841][ T5023] __se_sys_mount+0x725/0x810 [ 159.865988][ T5023] __x64_sys_mount+0xe4/0x150 [ 159.870870][ T5023] x64_sys_call+0x2bf4/0x3b50 [ 159.875896][ T5023] do_syscall_64+0xcf/0x1e0 [ 159.880597][ T5023] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 159.886926][ T5023] [ 159.889362][ T5023] Local variable fd created at: [ 159.894778][ T5023] hfs_fill_super+0x4e/0x23c0 [ 159.899627][ T5023] mount_bdev+0x397/0x520 [ 159.904347][ T5023] [ 159.906776][ T5023] CPU: 0 PID: 5023 Comm: syz-executor408 Not tainted 6.9.0-rc4-syzkaller-00031-g96fca68c4fbf #0 [ 159.917487][ T5023] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024 [ 159.927898][ T5023] ===================================================== [ 159.935096][ T5023] Disabling lock debugging due to kernel taint [ 159.941346][ T5023] Kernel panic - not syncing: kmsan.panic set ... [ 159.947858][ T5023] CPU: 0 PID: 5023 Comm: syz-executor408 Tainted: G B 6.9.0-rc4-syzkaller-00031-g96fca68c4fbf #0 [ 159.959876][ T5023] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024 [ 159.970221][ T5023] Call Trace: [ 159.973658][ T5023] [ 159.976690][ T5023] dump_stack_lvl+0x216/0x2d0 [ 159.981648][ T5023] ? kmsan_get_shadow_origin_ptr+0x4d/0xb0 [ 159.987666][ T5023] dump_stack+0x1e/0x30 [ 159.992284][ T5023] panic+0x4e2/0xcd0 [ 159.996408][ T5023] ? kmsan_get_metadata+0xd1/0x1d0 [ 160.001804][ T5023] kmsan_report+0x2d5/0x2e0 [ 160.006510][ T5023] ? vprintk_default+0x3e/0x50 [ 160.011481][ T5023] ? __msan_warning+0x95/0x120 [ 160.016386][ T5023] ? hfs_brec_find+0x65e/0x980 [ 160.021265][ T5023] ? hfs_brec_read+0x3f/0x1a0 [ 160.026130][ T5023] ? hfs_cat_find_brec+0xe6/0x400 [ 160.031377][ T5023] ? hfs_fill_super+0x1f28/0x23c0 [ 160.036563][ T5023] ? mount_bdev+0x397/0x520 [ 160.041234][ T5023] ? hfs_mount+0x4d/0x60 [ 160.045589][ T5023] ? legacy_get_tree+0x114/0x290 [ 160.050667][ T5023] ? vfs_get_tree+0xa7/0x570 [ 160.055411][ T5023] ? do_new_mount+0x71f/0x15e0 [ 160.060412][ T5023] ? path_mount+0x742/0x1f20 [ 160.065206][ T5023] ? __se_sys_mount+0x725/0x810 [ 160.070296][ T5023] ? __x64_sys_mount+0xe4/0x150 [ 160.075366][ T5023] ? x64_sys_call+0x2bf4/0x3b50 [ 160.080534][ T5023] ? do_syscall_64+0xcf/0x1e0 [ 160.085369][ T5023] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 160.091683][ T5023] ? kmsan_get_metadata+0x146/0x1d0 [ 160.097022][ T5023] ? hfs_brec_keylen+0x4fc/0x610 [ 160.102189][ T5023] ? hfs_brec_keylen+0x58f/0x610 [ 160.107431][ T5023] ? __hfs_brec_find+0x426/0x830 [ 160.112593][ T5023] ? kmsan_get_metadata+0x146/0x1d0 [ 160.118159][ T5023] ? kmsan_get_shadow_origin_ptr+0x4d/0xb0 [ 160.124217][ T5023] __msan_warning+0x95/0x120 [ 160.129057][ T5023] hfs_brec_find+0x65e/0x980 [ 160.133910][ T5023] hfs_brec_read+0x3f/0x1a0 [ 160.138664][ T5023] hfs_cat_find_brec+0xe6/0x400 [ 160.143767][ T5023] ? mutex_lock+0x38/0x60 [ 160.148327][ T5023] ? hfs_find_init+0x224/0x250 [ 160.153639][ T5023] hfs_fill_super+0x1f28/0x23c0 [ 160.159224][ T5023] ? kmsan_get_shadow_origin_ptr+0x4d/0xb0 [ 160.168282][ T5023] ? setup_bdev_super+0x93c/0xa10 [ 160.173623][ T5023] mount_bdev+0x397/0x520 [ 160.178188][ T5023] ? __pfx_hfs_fill_super+0x10/0x10 [ 160.183573][ T5023] hfs_mount+0x4d/0x60 [ 160.187787][ T5023] legacy_get_tree+0x114/0x290 [ 160.192729][ T5023] ? __pfx_hfs_mount+0x10/0x10 [ 160.197790][ T5023] ? __pfx_legacy_get_tree+0x10/0x10 [ 160.203227][ T5023] vfs_get_tree+0xa7/0x570 [ 160.208155][ T5023] ? mount_capable+0x97/0x120 [ 160.213067][ T5023] do_new_mount+0x71f/0x15e0 [ 160.217954][ T5023] ? kmsan_get_metadata+0x146/0x1d0 [ 160.223343][ T5023] path_mount+0x742/0x1f20 [ 160.227980][ T5023] ? user_path_at_empty+0x325/0x3a0 [ 160.233322][ T5023] __se_sys_mount+0x725/0x810 [ 160.238170][ T5023] ? ptrace_notify+0x263/0x320 [ 160.243154][ T5023] __x64_sys_mount+0xe4/0x150 [ 160.248080][ T5023] x64_sys_call+0x2bf4/0x3b50 [ 160.253001][ T5023] do_syscall_64+0xcf/0x1e0 [ 160.257703][ T5023] ? clear_bhb_loop+0x25/0x80 [ 160.262588][ T5023] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 160.268692][ T5023] RIP: 0033:0x7f4dde49216a [ 160.273271][ T5023] 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 [ 160.293105][ T5023] RSP: 002b:00007ffe9db39be8 EFLAGS: 00000286 ORIG_RAX: 00000000000000a5 [ 160.301757][ T5023] RAX: ffffffffffffffda RBX: 00007ffe9db39c00 RCX: 00007f4dde49216a [ 160.309892][ T5023] RDX: 0000000020000100 RSI: 0000000020000240 RDI: 00007ffe9db39c00 [ 160.317987][ T5023] RBP: 0000000000000004 R08: 00007ffe9db39c40 R09: 00000000000002f9 [ 160.326127][ T5023] R10: 0000000000014008 R11: 0000000000000286 R12: 0000000000014008 [ 160.334319][ T5023] R13: 00007ffe9db39c40 R14: 0000000000000003 R15: 0000000000008000 [ 160.342437][ T5023] [ 160.346008][ T5023] Kernel Offset: disabled [ 160.350402][ T5023] Rebooting in 86400 seconds..