./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor1683842512 <...> Warning: Permanently added '10.128.0.70' (ED25519) to the list of known hosts. execve("./syz-executor1683842512", ["./syz-executor1683842512"], 0x7ffd5cc824c0 /* 10 vars */) = 0 brk(NULL) = 0x555555a24000 brk(0x555555a24d00) = 0x555555a24d00 arch_prctl(ARCH_SET_FS, 0x555555a24380) = 0 set_tid_address(0x555555a24650) = 5008 set_robust_list(0x555555a24660, 24) = 0 rseq(0x555555a24ca0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor1683842512", 4096) = 28 getrandom("\x13\xbb\xe0\x60\x64\xdc\xe9\x34", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x555555a24d00 brk(0x555555a45d00) = 0x555555a45d00 brk(0x555555a46000) = 0x555555a46000 mprotect(0x7fa3a1c0e000, 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=0x555555a24650) = 5009 ./strace-static-x86_64: Process 5009 attached [pid 5009] set_robust_list(0x555555a24660, 24) = 0 [pid 5009] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5009] setpgid(0, 0) = 0 [pid 5009] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5009] write(3, "1000", 4) = 4 [pid 5009] close(3) = 0 [pid 5009] memfd_create("syzkaller", 0) = 3 [pid 5009] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fa39975c000 [pid 5009] 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 5009] munmap(0x7fa39975c000, 138412032) = 0 [pid 5009] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5009] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5009] close(3) = 0 [pid 5009] mkdir("./bus", 0777) = 0 [pid 5009] mount("/dev/loop0", "./bus", "hfs", MS_NOSUID|MS_NOEXEC|MS_SYNCHRONOUS|MS_NOATIME|MS_SILENT|MS_I_VERSION, "\x63\x6f\x64\x65\x70\x61\x67\x65\x3d\x63\x70\x39\x33\x36\x2c\x64\x69\x72\x5f\x75\x6d\x61\x73\x6b\x3d\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x36\x32\x35\x2c\x64\x69\x72\x5f\x75\x6d\x61\x73\x6b\x3d\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x37\x2c\x74\x79\x70\x65\x3d\x95\xc1\x09\x9e\x2c\x66\x69\x6c\x65\x5f\x75\x6d"...) = 0 [pid 5009] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5009] chdir("./bus") = 0 [pid 5009] ioctl(4, LOOP_CLR_FD) = 0 [ 139.431240][ T5009] loop0: detected capacity change from 0 to 64 [pid 5009] close(4) = 0 [pid 5009] mkdirat(AT_FDCWD, "./file0", 000) = 0 [ 139.487939][ T5009] ===================================================== [ 139.495429][ T5009] BUG: KMSAN: uninit-value in hfs_revalidate_dentry+0x307/0x3f0 [ 139.504068][ T5009] hfs_revalidate_dentry+0x307/0x3f0 [ 139.509549][ T5009] lookup_fast+0x89e/0x8e0 [ 139.514209][ T5009] link_path_walk+0x7ff/0x1420 [ 139.519152][ T5009] path_lookupat+0xd9/0x6f0 [ 139.523945][ T5009] filename_lookup+0x22e/0x740 [ 139.528883][ T5009] user_path_at_empty+0x87/0x3b0 [ 139.534123][ T5009] __se_sys_mount+0x66b/0x810 [ 139.539014][ T5009] __x64_sys_mount+0xe4/0x140 [ 139.544083][ T5009] do_syscall_64+0x44/0x110 [ 139.548774][ T5009] entry_SYSCALL_64_after_hwframe+0x63/0x6b [ 139.554978][ T5009] [ 139.557377][ T5009] Uninit was created at: [ 139.561895][ T5009] __alloc_pages+0x9a4/0xe00 [ 139.566644][ T5009] alloc_pages_mpol+0x62b/0x9d0 [ 139.571750][ T5009] alloc_pages+0x1be/0x1e0 [ 139.576326][ T5009] new_slab+0x421/0x1570 [ 139.580718][ T5009] ___slab_alloc+0x13db/0x33d0 [ 139.585763][ T5009] kmem_cache_alloc_lru+0x552/0x970 [ 139.591204][ T5009] hfs_alloc_inode+0x5a/0xc0 [ 139.595951][ T5009] alloc_inode+0x83/0x440 [ 139.600376][ T5009] iget_locked+0x2dd/0xe80 [ 139.605001][ T5009] hfs_btree_open+0x16c/0x1aa0 [ 139.609916][ T5009] hfs_mdb_get+0x1fe2/0x28b0 [ 139.614691][ T5009] hfs_fill_super+0x1cf5/0x23c0 [ 139.619694][ T5009] mount_bdev+0x3d7/0x560 [ 139.624226][ T5009] hfs_mount+0x4d/0x60 [ 139.628464][ T5009] legacy_get_tree+0x110/0x290 [ 139.633536][ T5009] vfs_get_tree+0xa5/0x520 [ 139.638095][ T5009] do_new_mount+0x68d/0x1550 [ 139.642896][ T5009] path_mount+0x73d/0x1f20 [ 139.647455][ T5009] __se_sys_mount+0x725/0x810 [ 139.652311][ T5009] __x64_sys_mount+0xe4/0x140 [ 139.657133][ T5009] do_syscall_64+0x44/0x110 [ 139.661816][ T5009] entry_SYSCALL_64_after_hwframe+0x63/0x6b [ 139.667890][ T5009] [ 139.670293][ T5009] CPU: 1 PID: 5009 Comm: syz-executor168 Not tainted 6.7.0-rc7-syzkaller #0 [ 139.679186][ T5009] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023 [ 139.689411][ T5009] ===================================================== [ 139.696582][ T5009] Disabling lock debugging due to kernel taint [ 139.702864][ T5009] Kernel panic - not syncing: kmsan.panic set ... [ 139.709328][ T5009] CPU: 1 PID: 5009 Comm: syz-executor168 Tainted: G B 6.7.0-rc7-syzkaller #0 [ 139.719566][ T5009] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023 [ 139.729712][ T5009] Call Trace: [ 139.733065][ T5009] [ 139.736065][ T5009] dump_stack_lvl+0x1bf/0x240 [ 139.740925][ T5009] dump_stack+0x1e/0x20 [ 139.745239][ T5009] panic+0x4de/0xc90 [ 139.749338][ T5009] ? add_taint+0x108/0x1a0 [ 139.753918][ T5009] kmsan_report+0x2d0/0x2d0 [ 139.758588][ T5009] ? __msan_warning+0x96/0x110 [ 139.763459][ T5009] ? hfs_revalidate_dentry+0x307/0x3f0 [ 139.769052][ T5009] ? lookup_fast+0x89e/0x8e0 [ 139.773821][ T5009] ? link_path_walk+0x7ff/0x1420 [ 139.778896][ T5009] ? path_lookupat+0xd9/0x6f0 [ 139.783733][ T5009] ? filename_lookup+0x22e/0x740 [ 139.788809][ T5009] ? user_path_at_empty+0x87/0x3b0 [ 139.794015][ T5009] ? __se_sys_mount+0x66b/0x810 [ 139.799009][ T5009] ? __x64_sys_mount+0xe4/0x140 [ 139.804024][ T5009] ? do_syscall_64+0x44/0x110 [ 139.808812][ T5009] ? entry_SYSCALL_64_after_hwframe+0x63/0x6b [ 139.814995][ T5009] ? kmsan_get_shadow_origin_ptr+0x4d/0xa0 [ 139.821122][ T5009] ? kmsan_get_shadow_origin_ptr+0x4d/0xa0 [ 139.827134][ T5009] ? __d_lookup_rcu_op_compare+0x66e/0x6f0 [ 139.833126][ T5009] ? kmsan_internal_set_shadow_origin+0x66/0xe0 [ 139.839543][ T5009] ? kmsan_get_shadow_origin_ptr+0x4d/0xa0 [ 139.845529][ T5009] ? kmsan_get_shadow_origin_ptr+0x4d/0xa0 [ 139.851480][ T5009] __msan_warning+0x96/0x110 [ 139.856204][ T5009] hfs_revalidate_dentry+0x307/0x3f0 [ 139.861635][ T5009] ? hfs_init_once+0x30/0x30 [ 139.866406][ T5009] lookup_fast+0x89e/0x8e0 [ 139.871021][ T5009] link_path_walk+0x7ff/0x1420 [ 139.875910][ T5009] path_lookupat+0xd9/0x6f0 [ 139.880537][ T5009] filename_lookup+0x22e/0x740 [ 139.885482][ T5009] ? kmsan_get_shadow_origin_ptr+0x4d/0xa0 [ 139.891488][ T5009] user_path_at_empty+0x87/0x3b0 [ 139.896602][ T5009] ? __x64_sys_mount+0xe4/0x140 [ 139.901603][ T5009] __se_sys_mount+0x66b/0x810 [ 139.906393][ T5009] __x64_sys_mount+0xe4/0x140 [ 139.911200][ T5009] do_syscall_64+0x44/0x110 [ 139.915872][ T5009] entry_SYSCALL_64_after_hwframe+0x63/0x6b [ 139.921963][ T5009] RIP: 0033:0x7fa3a1b9aad9 [ 139.926500][ T5009] 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 [ 139.946291][ T5009] RSP: 002b:00007ffda21ae9c8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 [ 139.954872][ T5009] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fa3a1b9aad9 [ 139.962978][ T5009] RDX: 0000000000000000 RSI: 0000000020000200 RDI: 0000000000000000 [ 139.971077][ T5009] RBP: 00007fa3a1c0e5f0 R08: 0000000000000000 R09: 0000555555a254c0 [ 139.979158][ T5009] R10: 0000000000101091 R11: 0000000000000246 R12: 00007ffda21ae9f0 [ 139.987291][ T5009] R13: 00007ffda21aec18 R14: 431bde82d7b634db R15: 00007fa3a1be303b [ 139.995383][ T5009] [ 139.998635][ T5009] Kernel Offset: disabled [ 140.003005][ T5009] Rebooting in 86400 seconds..