./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor114955232 <...> Warning: Permanently added '10.128.0.15' (ED25519) to the list of known hosts. execve("./syz-executor114955232", ["./syz-executor114955232"], 0x7ffc16aac7f0 /* 10 vars */) = 0 brk(NULL) = 0x555556d88000 brk(0x555556d88d00) = 0x555556d88d00 arch_prctl(ARCH_SET_FS, 0x555556d88380) = 0 set_tid_address(0x555556d88650) = 5029 set_robust_list(0x555556d88660, 24) = 0 rseq(0x555556d88ca0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor114955232", 4096) = 27 getrandom("\xcc\x70\x8c\x72\x13\x7f\x10\x1f", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x555556d88d00 brk(0x555556da9d00) = 0x555556da9d00 brk(0x555556daa000) = 0x555556daa000 mprotect(0x7f9d18b76000, 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 5030 attached , child_tidptr=0x555556d88650) = 5030 [pid 5030] set_robust_list(0x555556d88660, 24) = 0 [pid 5030] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5030] setpgid(0, 0) = 0 [pid 5030] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5030] write(3, "1000", 4) = 4 [pid 5030] close(3) = 0 [pid 5030] memfd_create("syzkaller", 0) = 3 [pid 5030] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9d106c3000 [pid 5030] 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 5030] munmap(0x7f9d106c3000, 138412032) = 0 [pid 5030] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5030] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5030] close(3) = 0 [pid 5030] mkdir("\x13\x13\x77\xc5\xfc\x35\xd4\x14\x54\xd5\xd4\x1d\x29\xad\x1a\x60\x29\x59\x81\x46\xe6\xbe\x16\x6e\x41\xad\x0d\xbd\x40\x54\x03\x3c\x9f\x33\xbb\xda\x82\x24\xa2\xf3\xd7\x72\xe7\x63\x6e\x48\xb3\x3c\xbf\x70\x83\x72\xe8\xf1\xb9\x93\x3e\xc5\x12\x77\x43\xbe\x22\x06\x20\x9e\xf0\x2d\xf9\xcb\xf2\xf6\xe8\x80\xd3\x38\x2f", 0777) = 0 [ 55.990704][ T5030] syz-executor114[5030]: memfd_create() called without MFD_EXEC or MFD_NOEXEC_SEAL set [ 56.012118][ T5030] loop0: detected capacity change from 0 to 1024 [ 56.023160][ T5030] ======================================================= [ 56.023160][ T5030] WARNING: The mand mount option has been deprecated and [pid 5030] mount("/dev/loop0", "\x13\x13\x77\xc5\xfc\x35\xd4\x14\x54\xd5\xd4\x1d\x29\xad\x1a\x60\x29\x59\x81\x46\xe6\xbe\x16\x6e\x41\xad\x0d\xbd\x40\x54\x03\x3c\x9f\x33\xbb\xda\x82\x24\xa2\xf3\xd7\x72\xe7\x63\x6e\x48\xb3\x3c\xbf\x70\x83\x72\xe8\xf1\xb9\x93\x3e\xc5\x12\x77\x43\xbe\x22\x06\x20\x9e\xf0\x2d\xf9\xcb\xf2\xf6\xe8\x80\xd3\x38\x2f", "hfsplus", MS_RDONLY|MS_NOEXEC|MS_MANDLOCK|MS_NODIRATIME|MS_SILENT|MS_RELATIME|MS_STRICTATIME, "force,nls=maccyrillic,nodecompose,part=0x0000000000000003,barrier,part=0x00000000000000ff,uid=0x0000"...) = 0 [pid 5030] openat(AT_FDCWD, "\x13\x13\x77\xc5\xfc\x35\xd4\x14\x54\xd5\xd4\x1d\x29\xad\x1a\x60\x29\x59\x81\x46\xe6\xbe\x16\x6e\x41\xad\x0d\xbd\x40\x54\x03\x3c\x9f\x33\xbb\xda\x82\x24\xa2\xf3\xd7\x72\xe7\x63\x6e\x48\xb3\x3c\xbf\x70\x83\x72\xe8\xf1\xb9\x93\x3e\xc5\x12\x77\x43\xbe\x22\x06\x20\x9e\xf0\x2d\xf9\xcb\xf2\xf6\xe8\x80\xd3\x38\x2f", O_RDONLY|O_DIRECTORY) = 3 [pid 5030] chdir("\x13\x13\x77\xc5\xfc\x35\xd4\x14\x54\xd5\xd4\x1d\x29\xad\x1a\x60\x29\x59\x81\x46\xe6\xbe\x16\x6e\x41\xad\x0d\xbd\x40\x54\x03\x3c\x9f\x33\xbb\xda\x82\x24\xa2\xf3\xd7\x72\xe7\x63\x6e\x48\xb3\x3c\xbf\x70\x83\x72\xe8\xf1\xb9\x93\x3e\xc5\x12\x77\x43\xbe\x22\x06\x20\x9e\xf0\x2d\xf9\xcb\xf2\xf6\xe8\x80\xd3\x38\x2f") = 0 [pid 5030] ioctl(4, LOOP_CLR_FD) = 0 [pid 5030] close(4) = 0 [pid 5030] mkdir(".", 0777) = -1 EEXIST (File exists) [pid 5030] mount(NULL, ".", 0x20000180, MS_NODEV|MS_NOEXEC|MS_REMOUNT|MS_DIRSYNC|MS_NOATIME|MS_PRIVATE|MS_RELATIME|MS_I_VERSION|MS_STRICTATIME, "\x14\x27\x0e\x2d\x25\xcc\xcf\xf0\x78\xb9\x14\x0e\x8a\x1e\x19\xf3\xb4\xc3\xbd\x09\x96\x8d\xd1\x91\x1a\xce\xf2\x43\x21\xd7\x64\xd9\xe1\x17\xda\x79\x06\x3a\x62\xe3\xa5\x92\xfb\x42\xf7\xd9\xdd\xb2\x68\x2b\x4c\x2f\xf5\x80\xe2\x5f\xa8\xef\xfb\xd5\x3a\xcf\xb0\xf8\x70\xbc\x1e\x49\xd0\x1a\x5b\x7f\xf5\x51\x50\xd2\xbf\x3b\x04\x28\x58\xc5\x32\x5c\x2b\x56\x9b\x32\x0c\xd4\x4e\x49\xe2\x46\xcc\x1e\x41\xf0\x4d\x2e"...) = 0 [pid 5030] openat(AT_FDCWD, ".", O_RDONLY|O_DIRECTORY) = 4 [pid 5030] chdir(".") = 0 [pid 5030] creat("./bus", 000) = 5 [ 56.023160][ T5030] and is ignored by this kernel. Remove the mand [ 56.023160][ T5030] option from the mount to silence this warning. [ 56.023160][ T5030] ======================================================= [ 56.083817][ T5030] general protection fault, probably for non-canonical address 0xdffffc0000000008: 0000 [#1] PREEMPT SMP KASAN [ 56.095551][ T5030] KASAN: null-ptr-deref in range [0x0000000000000040-0x0000000000000047] [ 56.103938][ T5030] CPU: 0 PID: 5030 Comm: syz-executor114 Not tainted 6.6.0-rc4-syzkaller-00229-g82714078aee4 #0 [ 56.114322][ T5030] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/06/2023 [ 56.124356][ T5030] RIP: 0010:hfsplus_rename_cat+0x4b3/0x1050 [ 56.130265][ T5030] Code: 60 42 80 3c 20 00 48 8b 5c 24 20 74 05 e8 05 38 81 ff 48 8b 94 24 20 01 00 00 48 83 c3 40 48 89 d8 48 c1 e8 03 48 89 44 24 68 <42> 80 3c 20 00 48 89 54 24 08 74 0d 48 89 df e8 d9 37 81 ff 48 8b [ 56.149876][ T5030] RSP: 0018:ffffc90003a6f780 EFLAGS: 00010202 [ 56.155930][ T5030] RAX: 0000000000000008 RBX: 0000000000000040 RCX: ffff8880203e1dc0 [ 56.163884][ T5030] RDX: ffff88801fb6f000 RSI: 0000000000000000 RDI: ffffc90003a6f8a0 [ 56.171842][ T5030] RBP: ffffc90003a6fbf0 R08: ffffffff8267c274 R09: ad0047e119000000 [ 56.179810][ T5030] R10: ad0047e119000000 R11: ad0047e1ad0047e1 R12: dffffc0000000000 [ 56.187770][ T5030] R13: ffffc90003a6f86c R14: ffffc90003a6f900 R15: 1ffff9200074df04 [ 56.195751][ T5030] FS: 0000555556d88380(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000 [ 56.204672][ T5030] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 56.211242][ T5030] CR2: 00007ffd58aeb000 CR3: 0000000027125000 CR4: 00000000003506f0 [ 56.219209][ T5030] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 56.227158][ T5030] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 56.235109][ T5030] Call Trace: [ 56.238375][ T5030] [ 56.241292][ T5030] ? __die_body+0x8b/0xe0 [ 56.245607][ T5030] ? die_addr+0xc9/0x100 [ 56.249832][ T5030] ? exc_general_protection+0x3c2/0x5b0 [ 56.255364][ T5030] ? asm_exc_general_protection+0x26/0x30 [ 56.261065][ T5030] ? hfsplus_bnode_read+0xf4/0x1e0 [ 56.266161][ T5030] ? hfsplus_rename_cat+0x4b3/0x1050 [ 56.271432][ T5030] ? print_deadlock_bug+0x600/0x600 [ 56.276611][ T5030] ? hfsplus_subfolders_dec+0x110/0x110 [ 56.282145][ T5030] ? number+0xb5e/0xf90 [ 56.286296][ T5030] ? hfsplus_unlink+0x161/0x790 [ 56.291129][ T5030] ? hfsplus_unlink+0x214/0x790 [ 56.295962][ T5030] ? vsprintf+0x30/0x30 [ 56.300102][ T5030] hfsplus_unlink+0x308/0x790 [ 56.304766][ T5030] ? smack_inode_link+0x310/0x310 [ 56.309775][ T5030] ? hfsplus_link+0x800/0x800 [ 56.314434][ T5030] ? __down_write_common+0x161/0x200 [ 56.319701][ T5030] ? bpf_lsm_inode_unlink+0x9/0x10 [ 56.324789][ T5030] ? security_inode_unlink+0xce/0x110 [ 56.330143][ T5030] vfs_unlink+0x35d/0x5f0 [ 56.334458][ T5030] do_unlinkat+0x4a7/0x950 [ 56.338863][ T5030] ? fsnotify_link_count+0xf0/0xf0 [ 56.343957][ T5030] ? strncpy_from_user+0x1a5/0x2e0 [ 56.349056][ T5030] __x64_sys_unlink+0x49/0x50 [ 56.353735][ T5030] do_syscall_64+0x41/0xc0 [ 56.358141][ T5030] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 56.364017][ T5030] RIP: 0033:0x7f9d18b02019 [ 56.368413][ T5030] 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 [ 56.388005][ T5030] RSP: 002b:00007ffd58aea948 EFLAGS: 00000246 ORIG_RAX: 0000000000000057 [ 56.396417][ T5030] RAX: ffffffffffffffda RBX: 00007f9d18b4b082 RCX: 00007f9d18b02019 [ 56.404370][ T5030] RDX: 00007f9d18b02019 RSI: 00007f9d18b012f7 RDI: 00000000200000c0 [ 56.412321][ T5030] RBP: 00007f9d18b4b08c R08: 0000000020000000 R09: 0000000020000000 [ 56.420278][ T5030] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffd58aea980 [ 56.428237][ T5030] R13: 00007ffd58aeaba8 R14: 431bde82d7b634db R15: 00007f9d18b4b03b [ 56.436204][ T5030] [ 56.439213][ T5030] Modules linked in: [ 56.443527][ T5030] ---[ end trace 0000000000000000 ]--- [ 56.448989][ T5030] RIP: 0010:hfsplus_rename_cat+0x4b3/0x1050 [ 56.454945][ T5030] Code: 60 42 80 3c 20 00 48 8b 5c 24 20 74 05 e8 05 38 81 ff 48 8b 94 24 20 01 00 00 48 83 c3 40 48 89 d8 48 c1 e8 03 48 89 44 24 68 <42> 80 3c 20 00 48 89 54 24 08 74 0d 48 89 df e8 d9 37 81 ff 48 8b [ 56.474574][ T5030] RSP: 0018:ffffc90003a6f780 EFLAGS: 00010202 [ 56.480655][ T5030] RAX: 0000000000000008 RBX: 0000000000000040 RCX: ffff8880203e1dc0 [ 56.488616][ T5030] RDX: ffff88801fb6f000 RSI: 0000000000000000 RDI: ffffc90003a6f8a0 [ 56.496624][ T5030] RBP: ffffc90003a6fbf0 R08: ffffffff8267c274 R09: ad0047e119000000 [ 56.504614][ T5030] R10: ad0047e119000000 R11: ad0047e1ad0047e1 R12: dffffc0000000000 [ 56.512609][ T5030] R13: ffffc90003a6f86c R14: ffffc90003a6f900 R15: 1ffff9200074df04 [ 56.520593][ T5030] FS: 0000555556d88380(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000 [ 56.529510][ T5030] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 56.536130][ T5030] CR2: 00007ffd58aeb000 CR3: 0000000027125000 CR4: 00000000003506f0 [ 56.544121][ T5030] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 56.552128][ T5030] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 56.560140][ T5030] Kernel panic - not syncing: Fatal exception [ 56.566386][ T5030] Kernel Offset: disabled [ 56.570691][ T5030] Rebooting in 86400 seconds..