./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor1220284461 <...> Warning: Permanently added '10.128.0.13' (ED25519) to the list of known hosts. execve("./syz-executor1220284461", ["./syz-executor1220284461"], 0x7ffc78e63d10 /* 10 vars */) = 0 brk(NULL) = 0x5555835c5000 brk(0x5555835c5d00) = 0x5555835c5d00 arch_prctl(ARCH_SET_FS, 0x5555835c5380) = 0 set_tid_address(0x5555835c5650) = 5057 set_robust_list(0x5555835c5660, 24) = 0 rseq(0x5555835c5ca0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor1220284461", 4096) = 28 getrandom("\x4e\x2b\x6a\xd5\x6d\x0d\x44\xf6", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x5555835c5d00 brk(0x5555835e6d00) = 0x5555835e6d00 brk(0x5555835e7000) = 0x5555835e7000 mprotect(0x7f1bca462000, 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 memfd_create("syzkaller", 0) = 3 mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f1bc1e00000 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 munmap(0x7f1bc1e00000, 138412032) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 ioctl(4, LOOP_SET_FD, 3) = 0 close(3) = 0 close(4) = 0 mkdir("./file1", 0777) = 0 mount("/dev/loop0", "./file1", "hfsplus", MS_RDONLY|MS_DIRSYNC|MS_NOATIME, "") = 0 openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) open("./file1", O_RDONLY|O_TRUNC|O_PATH) = 4 openat(4, "./file1", O_RDONLY|O_SYNC) = 5 mkdir("./file1", 0777) = -1 EEXIST (File exists) [ 55.100125][ T5057] loop0: detected capacity change from 0 to 1024 mount(NULL, "./file1", 0x20000000, MS_REMOUNT|MS_REC, "./file1") = 0 openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 6 [ 55.179702][ T5057] general protection fault, probably for non-canonical address 0xdffffc0000000008: 0000 [#1] PREEMPT SMP KASAN PTI [ 55.191770][ T5057] KASAN: null-ptr-deref in range [0x0000000000000040-0x0000000000000047] [ 55.200163][ T5057] CPU: 0 PID: 5057 Comm: syz-executor122 Not tainted 6.8.0-syzkaller-08951-gfe46a7dd189e #0 [ 55.210203][ T5057] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024 [ 55.220238][ T5057] RIP: 0010:hfsplus_rename_cat+0x4b3/0x1050 [ 55.226132][ T5057] Code: 60 42 80 3c 20 00 48 8b 5c 24 20 74 05 e8 65 5e 7b 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 39 5e 7b ff 48 8b [ 55.245715][ T5057] RSP: 0018:ffffc90004017740 EFLAGS: 00010202 [ 55.251760][ T5057] RAX: 0000000000000008 RBX: 0000000000000040 RCX: ffff88801eccbc00 [ 55.260056][ T5057] RDX: ffff8880792e5000 RSI: 0000000000000000 RDI: ffffc90004017860 [ 55.268028][ T5057] RBP: ffffc90004017bb0 R08: ffffffff827a0ca4 R09: 6d33a5df14000000 [ 55.275978][ T5057] R10: 6d33a5df14000000 R11: 0000a5df6d33a5df R12: dffffc0000000000 [ 55.283928][ T5057] R13: ffffc9000401782c R14: ffffc900040178c0 R15: 1ffff92000802efc [ 55.291890][ T5057] FS: 00005555835c5380(0000) GS:ffff8880b9400000(0000) knlGS:0000000000000000 [ 55.300810][ T5057] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 55.307370][ T5057] CR2: 00007ffc6b929000 CR3: 000000007b13e000 CR4: 00000000003506f0 [ 55.315330][ T5057] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 55.323278][ T5057] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 55.331227][ T5057] Call Trace: [ 55.334503][ T5057] [ 55.337434][ T5057] ? __die_body+0x88/0xe0 [ 55.341742][ T5057] ? die_addr+0x108/0x140 [ 55.346048][ T5057] ? exc_general_protection+0x3dd/0x5d0 [ 55.351605][ T5057] ? asm_exc_general_protection+0x26/0x30 [ 55.357315][ T5057] ? hfsplus_bnode_read+0xf4/0x1e0 [ 55.362402][ T5057] ? hfsplus_rename_cat+0x4b3/0x1050 [ 55.367677][ T5057] ? __pfx_hfsplus_rename_cat+0x10/0x10 [ 55.373293][ T5057] ? number+0xb5e/0xf90 [ 55.377449][ T5057] ? hfsplus_unlink+0x161/0x790 [ 55.382281][ T5057] ? hfsplus_unlink+0x214/0x790 [ 55.387114][ T5057] ? __pfx_sprintf+0x10/0x10 [ 55.391683][ T5057] hfsplus_unlink+0x308/0x790 [ 55.396342][ T5057] ? __pfx_smack_inode_unlink+0x10/0x10 [ 55.401869][ T5057] ? __pfx_hfsplus_unlink+0x10/0x10 [ 55.407048][ T5057] ? __down_write_common+0x162/0x200 [ 55.412316][ T5057] ? bpf_lsm_inode_unlink+0x9/0x10 [ 55.417404][ T5057] ? security_inode_unlink+0xd5/0x120 [ 55.422765][ T5057] vfs_unlink+0x365/0x600 [ 55.427075][ T5057] do_unlinkat+0x4ae/0x830 [ 55.431468][ T5057] ? __pfx_do_unlinkat+0x10/0x10 [ 55.436384][ T5057] ? strncpy_from_user+0x1a4/0x2f0 [ 55.441479][ T5057] ? do_syscall_64+0x10a/0x240 [ 55.446218][ T5057] __x64_sys_unlinkat+0xce/0xf0 [ 55.451049][ T5057] do_syscall_64+0xfb/0x240 [ 55.455544][ T5057] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 55.461423][ T5057] RIP: 0033:0x7f1bca3ef789 [ 55.465839][ T5057] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 61 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 [ 55.485422][ T5057] RSP: 002b:00007ffc6b928828 EFLAGS: 00000246 ORIG_RAX: 0000000000000107 [ 55.493840][ T5057] RAX: ffffffffffffffda RBX: 0031656c69662f2e RCX: 00007f1bca3ef789 [ 55.501788][ T5057] RDX: 0000000000000000 RSI: 0000000020000100 RDI: 0000000000000003 [ 55.509736][ T5057] RBP: 00007f1bca462610 R08: 0000000000000000 R09: 00007ffc6b9289f8 [ 55.517686][ T5057] R10: 00007ffc6b9286f0 R11: 0000000000000246 R12: 0000000000000001 [ 55.525631][ T5057] R13: 00007ffc6b9289e8 R14: 0000000000000001 R15: 0000000000000001 [ 55.533587][ T5057] [ 55.536589][ T5057] Modules linked in: [ 55.541030][ T5057] ---[ end trace 0000000000000000 ]--- [ 55.546532][ T5057] RIP: 0010:hfsplus_rename_cat+0x4b3/0x1050 [ 55.552437][ T5057] Code: 60 42 80 3c 20 00 48 8b 5c 24 20 74 05 e8 65 5e 7b 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 39 5e 7b ff 48 8b [ 55.572410][ T5057] RSP: 0018:ffffc90004017740 EFLAGS: 00010202 [ 55.578498][ T5057] RAX: 0000000000000008 RBX: 0000000000000040 RCX: ffff88801eccbc00 [ 55.586600][ T5057] RDX: ffff8880792e5000 RSI: 0000000000000000 RDI: ffffc90004017860 [ 55.594601][ T5057] RBP: ffffc90004017bb0 R08: ffffffff827a0ca4 R09: 6d33a5df14000000 [ 55.602573][ T5057] R10: 6d33a5df14000000 R11: 0000a5df6d33a5df R12: dffffc0000000000 [ 55.610589][ T5057] R13: ffffc9000401782c R14: ffffc900040178c0 R15: 1ffff92000802efc [ 55.618675][ T5057] FS: 00005555835c5380(0000) GS:ffff8880b9400000(0000) knlGS:0000000000000000 [ 55.627629][ T5057] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 55.634307][ T5057] CR2: 00007ffc6b929000 CR3: 000000007b13e000 CR4: 00000000003506f0 [ 55.642264][ T5057] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 55.650299][ T5057] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 55.658305][ T5057] Kernel panic - not syncing: Fatal exception [ 55.664571][ T5057] Kernel Offset: disabled [ 55.668906][ T5057] Rebooting in 86400 seconds..