./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor1837351014 <...> Warning: Permanently added '10.128.1.67' (ED25519) to the list of known hosts. execve("./syz-executor1837351014", ["./syz-executor1837351014"], 0x7ffe9ae364e0 /* 10 vars */) = 0 brk(NULL) = 0x555580a53000 brk(0x555580a53d00) = 0x555580a53d00 arch_prctl(ARCH_SET_FS, 0x555580a53380) = 0 set_tid_address(0x555580a53650) = 5788 set_robust_list(0x555580a53660, 24) = 0 rseq(0x555580a53ca0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor1837351014", 4096) = 28 getrandom("\xb4\x3a\x75\x4a\xe8\xee\xec\x09", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x555580a53d00 brk(0x555580a74d00) = 0x555580a74d00 brk(0x555580a75000) = 0x555580a75000 mprotect(0x7faa7d70d000, 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=0x555580a53650) = 5789 ./strace-static-x86_64: Process 5789 attached [pid 5789] set_robust_list(0x555580a53660, 24) = 0 [pid 5789] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5789] setpgid(0, 0) = 0 [pid 5789] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5789] write(3, "1000", 4) = 4 executing program [pid 5789] close(3) = 0 [pid 5789] write(1, "executing program\n", 18) = 18 [pid 5789] memfd_create("syzkaller", 0) = 3 [pid 5789] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa75200000 [pid 5789] 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 5789] munmap(0x7faa75200000, 138412032) = 0 [pid 5789] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5789] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5789] close(3) = 0 [pid 5789] close(4) = 0 [pid 5789] mkdir("./bus", 0777) = 0 [ 181.208619][ T5789] loop0: detected capacity change from 0 to 1024 [ 181.245273][ T5789] hfsplus: request for non-existent node 3 in B*Tree [pid 5789] mount("/dev/loop0", "./bus", "hfsplus", MS_SYNCHRONOUS|MS_LAZYTIME, "") = 0 [pid 5789] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5789] chdir("./bus") = 0 [pid 5789] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5789] mknod("./file0aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000) = 0 [ 181.252587][ T5789] hfsplus: request for non-existent node 3 in B*Tree [ 181.299019][ T5789] ===================================================== [ 181.306395][ T5789] BUG: KMSAN: uninit-value in hfsplus_cat_case_cmp_key+0xf1/0x190 [ 181.314510][ T5789] hfsplus_cat_case_cmp_key+0xf1/0x190 [ 181.320175][ T5789] hfs_find_rec_by_key+0xb1/0x240 [ 181.325454][ T5789] __hfsplus_brec_find+0x26f/0x7b0 [ 181.330756][ T5789] hfsplus_brec_find+0x445/0x970 [ 181.336000][ T5789] hfsplus_rename_cat+0x426/0x16f0 [ 181.341276][ T5789] hfsplus_link+0x43d/0xbf0 [ 181.346051][ T5789] vfs_link+0x94c/0xb70 [ 181.350385][ T5789] do_linkat+0x4f5/0xfd0 [ 181.354869][ T5789] __x64_sys_link+0xe8/0x140 [ 181.359642][ T5789] x64_sys_call+0x2853/0x3ba0 [ 181.364544][ T5789] do_syscall_64+0xcd/0x1e0 [ 181.369267][ T5789] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 181.375396][ T5789] [ 181.377796][ T5789] Uninit was created at: [ 181.382347][ T5789] __kmalloc_noprof+0x661/0xf30 [ 181.387389][ T5789] hfsplus_find_init+0x95/0x1d0 [ 181.392528][ T5789] hfsplus_rename_cat+0x109/0x16f0 [ 181.397804][ T5789] hfsplus_link+0x43d/0xbf0 [ 181.402571][ T5789] vfs_link+0x94c/0xb70 [ 181.406917][ T5789] do_linkat+0x4f5/0xfd0 [ 181.411269][ T5789] __x64_sys_link+0xe8/0x140 [ 181.416167][ T5789] x64_sys_call+0x2853/0x3ba0 [ 181.421048][ T5789] do_syscall_64+0xcd/0x1e0 [ 181.425805][ T5789] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 181.432011][ T5789] [ 181.434481][ T5789] CPU: 0 UID: 0 PID: 5789 Comm: syz-executor183 Not tainted 6.12.0-rc5-syzkaller-00005-ge42b1a9a2557 #0 [ 181.446367][ T5789] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 [ 181.456665][ T5789] ===================================================== [ 181.463810][ T5789] Disabling lock debugging due to kernel taint [ 181.470065][ T5789] Kernel panic - not syncing: kmsan.panic set ... [ 181.476591][ T5789] CPU: 0 UID: 0 PID: 5789 Comm: syz-executor183 Tainted: G B 6.12.0-rc5-syzkaller-00005-ge42b1a9a2557 #0 [ 181.489382][ T5789] Tainted: [B]=BAD_PAGE [ 181.493603][ T5789] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 [ 181.503749][ T5789] Call Trace: [ 181.507092][ T5789] [ 181.510102][ T5789] dump_stack_lvl+0x216/0x2d0 [ 181.514982][ T5789] ? kmsan_get_shadow_origin_ptr+0x4d/0xb0 [ 181.520930][ T5789] dump_stack+0x1e/0x30 [ 181.525205][ T5789] panic+0x4e2/0xcf0 [ 181.529215][ T5789] ? kmsan_get_metadata+0x121/0x1c0 [ 181.534560][ T5789] kmsan_report+0x2c7/0x2d0 [ 181.539202][ T5789] ? __msan_warning+0x95/0x120 [ 181.544101][ T5789] ? hfsplus_cat_case_cmp_key+0xf1/0x190 [ 181.549900][ T5789] ? hfs_find_rec_by_key+0xb1/0x240 [ 181.555214][ T5789] ? __hfsplus_brec_find+0x26f/0x7b0 [ 181.560619][ T5789] ? hfsplus_brec_find+0x445/0x970 [ 181.565842][ T5789] ? hfsplus_rename_cat+0x426/0x16f0 [ 181.571233][ T5789] ? hfsplus_link+0x43d/0xbf0 [ 181.576009][ T5789] ? vfs_link+0x94c/0xb70 [ 181.580452][ T5789] ? do_linkat+0x4f5/0xfd0 [ 181.584977][ T5789] ? __x64_sys_link+0xe8/0x140 [ 181.589878][ T5789] ? x64_sys_call+0x2853/0x3ba0 [ 181.595446][ T5789] ? do_syscall_64+0xcd/0x1e0 [ 181.602281][ T5789] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 181.608502][ T5789] ? kmsan_get_shadow_origin_ptr+0x4d/0xb0 [ 181.614453][ T5789] ? kmsan_get_metadata+0x13e/0x1c0 [ 181.619786][ T5789] ? kmsan_get_shadow_origin_ptr+0x4d/0xb0 [ 181.625731][ T5789] ? hfsplus_bnode_read_u16+0x3e/0x2b0 [ 181.631416][ T5789] ? filter_irq_stacks+0x60/0x1a0 [ 181.636651][ T5789] ? kmsan_get_metadata+0x13e/0x1c0 [ 181.641990][ T5789] ? kmsan_internal_memmove_metadata+0x91/0x230 [ 181.648378][ T5789] ? kmsan_get_metadata+0x13e/0x1c0 [ 181.653727][ T5789] ? kmsan_get_metadata+0x13e/0x1c0 [ 181.659088][ T5789] ? kmsan_get_shadow_origin_ptr+0x4d/0xb0 [ 181.665131][ T5789] __msan_warning+0x95/0x120 [ 181.669871][ T5789] hfsplus_cat_case_cmp_key+0xf1/0x190 [ 181.675514][ T5789] hfs_find_rec_by_key+0xb1/0x240 [ 181.680664][ T5789] ? __pfx_hfsplus_cat_case_cmp_key+0x10/0x10 [ 181.686845][ T5789] __hfsplus_brec_find+0x26f/0x7b0 [ 181.692082][ T5789] ? __pfx_hfs_find_rec_by_key+0x10/0x10 [ 181.697856][ T5789] hfsplus_brec_find+0x445/0x970 [ 181.702918][ T5789] ? __pfx_hfs_find_rec_by_key+0x10/0x10 [ 181.708694][ T5789] hfsplus_rename_cat+0x426/0x16f0 [ 181.713917][ T5789] ? kmsan_get_shadow_origin_ptr+0x4d/0xb0 [ 181.719877][ T5789] ? kmsan_get_metadata+0x13e/0x1c0 [ 181.725209][ T5789] ? kmsan_get_shadow_origin_ptr+0x4d/0xb0 [ 181.731162][ T5789] ? vsnprintf+0x2994/0x2a00 [ 181.735848][ T5789] ? kmsan_get_metadata+0x13e/0x1c0 [ 181.741207][ T5789] ? kmsan_get_metadata+0x13e/0x1c0 [ 181.746547][ T5789] hfsplus_link+0x43d/0xbf0 [ 181.751167][ T5789] ? kmsan_get_shadow_origin_ptr+0x4d/0xb0 [ 181.757110][ T5789] ? __pfx_hfsplus_link+0x10/0x10 [ 181.762256][ T5789] ? __pfx_hfsplus_link+0x10/0x10 [ 181.767382][ T5789] vfs_link+0x94c/0xb70 [ 181.771684][ T5789] do_linkat+0x4f5/0xfd0 [ 181.776122][ T5789] __x64_sys_link+0xe8/0x140 [ 181.780843][ T5789] x64_sys_call+0x2853/0x3ba0 [ 181.785646][ T5789] do_syscall_64+0xcd/0x1e0 [ 181.790269][ T5789] ? clear_bhb_loop+0x25/0x80 [ 181.795082][ T5789] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 181.801156][ T5789] RIP: 0033:0x7faa7d699ad9 [ 181.805660][ T5789] 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 [ 181.825392][ T5789] RSP: 002b:00007ffd15e7ce28 EFLAGS: 00000246 ORIG_RAX: 0000000000000056 [ 181.833920][ T5789] RAX: ffffffffffffffda RBX: 00007faa7d6e2760 RCX: 00007faa7d699ad9 [ 181.841987][ T5789] RDX: 0000000000000000 RSI: 0000000020000bc0 RDI: 0000000020001240 [ 181.850042][ T5789] RBP: 0000000020000000 R08: 0000555580a544c0 R09: 0000555580a544c0 [ 181.858104][ T5789] R10: 0000000000000695 R11: 0000000000000246 R12: 00007ffd15e7ce50 [ 181.866160][ T5789] R13: 00007ffd15e7d078 R14: 431bde82d7b634db R15: 00007faa7d6e203b [ 181.874235][ T5789] [ 181.877614][ T5789] Kernel Offset: disabled [ 181.882002][ T5789] Rebooting in 86400 seconds..