./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor453810588 <...> Warning: Permanently added '10.128.0.255' (ED25519) to the list of known hosts. execve("./syz-executor453810588", ["./syz-executor453810588"], 0x7ffe990ea280 /* 10 vars */) = 0 brk(NULL) = 0x5555861bb000 brk(0x5555861bbd00) = 0x5555861bbd00 arch_prctl(ARCH_SET_FS, 0x5555861bb380) = 0 set_tid_address(0x5555861bb650) = 5057 set_robust_list(0x5555861bb660, 24) = 0 rseq(0x5555861bbca0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor453810588", 4096) = 27 getrandom("\xb4\x43\x45\x0f\xcd\xfc\x16\xf5", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x5555861bbd00 brk(0x5555861dcd00) = 0x5555861dcd00 brk(0x5555861dd000) = 0x5555861dd000 mprotect(0x7fac664b3000, 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) = 0x7fac5de00000 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 munmap(0x7fac5de00000, 138412032) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 ioctl(4, LOOP_SET_FD, 3) = 0 close(3) = 0 close(4) = 0 mkdir("./file0", 0777) = 0 [ 55.517488][ T5057] loop0: detected capacity change from 0 to 64 [ 55.554114][ T5057] general protection fault, probably for non-canonical address 0xdffffc0000000008: 0000 [#1] PREEMPT SMP KASAN PTI [ 55.566225][ T5057] KASAN: null-ptr-deref in range [0x0000000000000040-0x0000000000000047] [ 55.574632][ T5057] CPU: 1 PID: 5057 Comm: syz-executor453 Not tainted 6.8.0-syzkaller-08951-gfe46a7dd189e #0 [ 55.584746][ T5057] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/29/2024 [ 55.594797][ T5057] RIP: 0010:hfs_find_init+0x72/0x1f0 [ 55.600089][ T5057] Code: d8 48 c1 e8 03 42 80 3c 28 00 74 08 48 89 df e8 64 44 79 ff 48 c7 03 00 00 00 00 48 89 2c 24 4c 8d 75 40 4d 89 f7 49 c1 ef 03 <43> 0f b6 04 2f 84 c0 0f 85 10 01 00 00 41 8b 06 8d 7c 00 04 be c0 [ 55.619681][ T5057] RSP: 0018:ffffc90003a172c0 EFLAGS: 00010202 [ 55.625732][ T5057] RAX: 1ffff92000742e77 RBX: ffffc90003a173b8 RCX: ffff888019bfda00 [ 55.633686][ T5057] RDX: 0000000000000000 RSI: ffffc90003a173a0 RDI: ffffc90003a173b0 [ 55.641638][ T5057] RBP: 0000000000000000 R08: ffffffff827cea4f R09: 0000000000000000 [ 55.649591][ T5057] R10: ffffc90003a173a0 R11: fffff52000742e7b R12: ffffc90003a173a0 [ 55.657544][ T5057] R13: dffffc0000000000 R14: 0000000000000040 R15: 0000000000000008 [ 55.665500][ T5057] FS: 00005555861bb380(0000) GS:ffff8880b9500000(0000) knlGS:0000000000000000 [ 55.674411][ T5057] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 55.681048][ T5057] CR2: 00007ffd5ba5e000 CR3: 0000000079a3a000 CR4: 00000000003506f0 [ 55.689018][ T5057] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 55.696984][ T5057] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 55.704953][ T5057] Call Trace: [ 55.708223][ T5057] [ 55.711145][ T5057] ? __die_body+0x88/0xe0 [ 55.715477][ T5057] ? die_addr+0x108/0x140 [ 55.719799][ T5057] ? exc_general_protection+0x3dd/0x5d0 [ 55.725356][ T5057] ? asm_exc_general_protection+0x26/0x30 [ 55.731063][ T5057] ? hfs_get_block+0x3bf/0xb60 [ 55.735809][ T5057] ? hfs_find_init+0x72/0x1f0 [ 55.740473][ T5057] hfs_get_block+0x4f4/0xb60 [ 55.745050][ T5057] ? __pfx_hfs_get_block+0x10/0x10 [ 55.750144][ T5057] ? _raw_spin_unlock+0x28/0x50 [ 55.754981][ T5057] ? create_empty_buffers+0x53e/0x740 [ 55.760355][ T5057] block_read_full_folio+0x42e/0xe10 [ 55.765626][ T5057] ? __pfx_hfs_get_block+0x10/0x10 [ 55.770719][ T5057] ? __pfx_block_read_full_folio+0x10/0x10 [ 55.776511][ T5057] ? __pfx_lru_add_fn+0x10/0x10 [ 55.781345][ T5057] ? folio_add_lru+0x4b3/0x9e0 [ 55.786092][ T5057] ? folio_add_lru+0x27b/0x9e0 [ 55.790841][ T5057] filemap_read_folio+0x1a0/0x790 [ 55.795852][ T5057] ? __pfx_hfs_read_folio+0x10/0x10 [ 55.801034][ T5057] ? __pfx_filemap_read_folio+0x10/0x10 [ 55.806565][ T5057] ? __filemap_get_folio+0x935/0xbc0 [ 55.811831][ T5057] ? __pfx_preempt_schedule+0x10/0x10 [ 55.817198][ T5057] do_read_cache_folio+0x134/0x820 [ 55.822296][ T5057] ? __pfx_hfs_read_folio+0x10/0x10 [ 55.827478][ T5057] do_read_cache_page+0x30/0x200 [ 55.832397][ T5057] hfs_btree_open+0x50b/0xf30 [ 55.837063][ T5057] ? submit_bio+0x2a2/0x3c0 [ 55.841571][ T5057] ? hfs_mdb_get+0x13d2/0x21b0 [ 55.846322][ T5057] hfs_mdb_get+0x1443/0x21b0 [ 55.850900][ T5057] ? __pfx_hfs_mdb_get+0x10/0x10 [ 55.855821][ T5057] ? __pfx_lockdep_init_map_type+0x10/0x10 [ 55.861613][ T5057] ? __raw_spin_lock_init+0x45/0x100 [ 55.866888][ T5057] hfs_fill_super+0x107e/0x1790 [ 55.871729][ T5057] ? __pfx_hfs_fill_super+0x10/0x10 [ 55.876911][ T5057] ? __pfx_vsnprintf+0x10/0x10 [ 55.881660][ T5057] ? do_raw_spin_lock+0x14f/0x370 [ 55.886674][ T5057] ? sb_set_blocksize+0x99/0x100 [ 55.891600][ T5057] ? setup_bdev_super+0x4b7/0x5b0 [ 55.896612][ T5057] mount_bdev+0x20a/0x2d0 [ 55.900922][ T5057] ? __pfx_hfs_fill_super+0x10/0x10 [ 55.906106][ T5057] ? __pfx_mount_bdev+0x10/0x10 [ 55.910936][ T5057] ? vfs_parse_fs_string+0x190/0x230 [ 55.916204][ T5057] ? __pfx_vfs_parse_fs_string+0x10/0x10 [ 55.921822][ T5057] ? cap_capable+0x1b4/0x250 [ 55.926394][ T5057] legacy_get_tree+0xee/0x190 [ 55.931050][ T5057] ? __pfx_hfs_mount+0x10/0x10 [ 55.935796][ T5057] vfs_get_tree+0x90/0x2a0 [ 55.940193][ T5057] do_new_mount+0x2be/0xb40 [ 55.944677][ T5057] ? ns_capable+0x8a/0xf0 [ 55.948990][ T5057] ? __pfx_do_new_mount+0x10/0x10 [ 55.953995][ T5057] __se_sys_mount+0x2d9/0x3c0 [ 55.958658][ T5057] ? __pfx___se_sys_mount+0x10/0x10 [ 55.963839][ T5057] ? do_syscall_64+0x10a/0x240 [ 55.968583][ T5057] ? __x64_sys_mount+0x20/0xc0 [ 55.973333][ T5057] do_syscall_64+0xfb/0x240 [ 55.977818][ T5057] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 55.983693][ T5057] RIP: 0033:0x7fac66441e3a [ 55.988093][ T5057] 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 [ 56.007681][ T5057] RSP: 002b:00007ffd5ba5d138 EFLAGS: 00000286 ORIG_RAX: 00000000000000a5 [ 56.016079][ T5057] RAX: ffffffffffffffda RBX: 00007ffd5ba5d150 RCX: 00007fac66441e3a [ 56.024034][ T5057] RDX: 0000000020000180 RSI: 00000000200000c0 RDI: 00007ffd5ba5d150 [ 56.031990][ T5057] RBP: 0000000000000004 R08: 00007ffd5ba5d190 R09: 00000000000002f9 [ 56.039944][ T5057] R10: 0000000003000002 R11: 0000000000000286 R12: 0000000003000002 [ 56.047897][ T5057] R13: 00007ffd5ba5d190 R14: 0000000000000003 R15: 0000000000008000 [ 56.055857][ T5057] [ 56.058858][ T5057] Modules linked in: [ 56.062983][ T5057] ---[ end trace 0000000000000000 ]--- [ 56.068734][ T5057] RIP: 0010:hfs_find_init+0x72/0x1f0 [ 56.074239][ T5057] Code: d8 48 c1 e8 03 42 80 3c 28 00 74 08 48 89 df e8 64 44 79 ff 48 c7 03 00 00 00 00 48 89 2c 24 4c 8d 75 40 4d 89 f7 49 c1 ef 03 <43> 0f b6 04 2f 84 c0 0f 85 10 01 00 00 41 8b 06 8d 7c 00 04 be c0 [ 56.093920][ T5057] RSP: 0018:ffffc90003a172c0 EFLAGS: 00010202 [ 56.099973][ T5057] RAX: 1ffff92000742e77 RBX: ffffc90003a173b8 RCX: ffff888019bfda00 [ 56.107968][ T5057] RDX: 0000000000000000 RSI: ffffc90003a173a0 RDI: ffffc90003a173b0 [ 56.115982][ T5057] RBP: 0000000000000000 R08: ffffffff827cea4f R09: 0000000000000000 [ 56.123975][ T5057] R10: ffffc90003a173a0 R11: fffff52000742e7b R12: ffffc90003a173a0 [ 56.131950][ T5057] R13: dffffc0000000000 R14: 0000000000000040 R15: 0000000000000008 [ 56.139951][ T5057] FS: 00005555861bb380(0000) GS:ffff8880b9500000(0000) knlGS:0000000000000000 [ 56.148902][ T5057] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 56.155528][ T5057] CR2: 00007ffd5ba5e000 CR3: 0000000079a3a000 CR4: 00000000003506f0 [ 56.163564][ T5057] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 56.171544][ T5057] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 56.179601][ T5057] Kernel panic - not syncing: Fatal exception [ 56.185959][ T5057] Kernel Offset: disabled [ 56.190274][ T5057] Rebooting in 86400 seconds..