./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor3853065345 <...> Warning: Permanently added '10.128.0.90' (ECDSA) to the list of known hosts. execve("./syz-executor3853065345", ["./syz-executor3853065345"], 0x7ffce9916f30 /* 10 vars */) = 0 brk(NULL) = 0x555555da7000 brk(0x555555da7c40) = 0x555555da7c40 arch_prctl(ARCH_SET_FS, 0x555555da7300) = 0 uname({sysname="Linux", nodename="syzkaller", ...}) = 0 readlink("/proc/self/exe", "/root/syz-executor3853065345", 4096) = 28 brk(0x555555dc8c40) = 0x555555dc8c40 brk(0x555555dc9000) = 0x555555dc9000 mprotect(0x7f556ef69000, 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) = 0x7f5566a00000 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(0x7f5566a00000, 32768) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 ioctl(4, LOOP_SET_FD, 3) = 0 close(3) = 0 mkdir("./file0", 0777) = 0 [ 55.720668][ T3629] loop0: detected capacity change from 0 to 64 [ 55.732191][ T3629] general protection fault, probably for non-canonical address 0xdffffc0000000008: 0000 [#1] PREEMPT SMP KASAN [ 55.743923][ T3629] KASAN: null-ptr-deref in range [0x0000000000000040-0x0000000000000047] [ 55.752316][ T3629] CPU: 0 PID: 3629 Comm: syz-executor385 Not tainted 6.1.0-rc6-syzkaller-00176-g08ad43d554ba #0 [ 55.762710][ T3629] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 [ 55.772744][ T3629] RIP: 0010:hfs_find_init+0x6e/0x1e0 [ 55.778029][ T3629] Code: d8 48 c1 e8 03 42 80 3c 28 00 74 08 48 89 df e8 88 e1 80 ff 48 c7 03 00 00 00 00 48 89 2c 24 4c 8d 75 40 4d 89 f7 49 c1 ef 03 <43> 8a 04 2f 84 c0 0f 85 0a 01 00 00 41 8b 06 8d 7c 00 04 be c0 0c [ 55.797616][ T3629] RSP: 0018:ffffc90003b3f2e0 EFLAGS: 00010202 [ 55.803664][ T3629] RAX: 1ffff92000767e7f RBX: ffffc90003b3f3f8 RCX: ffff888077c8d7c0 [ 55.811616][ T3629] RDX: 0000000000000000 RSI: ffffc90003b3f3e0 RDI: ffffc90003b3f3f0 [ 55.819567][ T3629] RBP: 0000000000000000 R08: ffffffff825efee7 R09: fffffbfff1cebe16 [ 55.827517][ T3629] R10: fffffbfff1cebe16 R11: 1ffffffff1cebe15 R12: ffffc90003b3f3e0 [ 55.835469][ T3629] R13: dffffc0000000000 R14: 0000000000000040 R15: 0000000000000008 [ 55.843421][ T3629] FS: 0000555555da7300(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000 [ 55.852351][ T3629] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 55.858917][ T3629] CR2: 00000000005d84c8 CR3: 0000000073938000 CR4: 00000000003506f0 [ 55.866871][ T3629] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 55.874820][ T3629] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 55.882770][ T3629] Call Trace: [ 55.886030][ T3629] [ 55.888947][ T3629] hfs_get_block+0x519/0xbb0 [ 55.893529][ T3629] ? hfs_free_extents+0x420/0x420 [ 55.898535][ T3629] ? do_raw_spin_unlock+0x134/0x8a0 [ 55.903719][ T3629] ? create_page_buffers+0x244/0x4b0 [ 55.908991][ T3629] block_read_full_folio+0x3b3/0xfa0 [ 55.914283][ T3629] ? hfs_free_extents+0x420/0x420 [ 55.919290][ T3629] ? block_is_partially_uptodate+0x620/0x620 [ 55.925283][ T3629] ? folio_add_lru+0x480/0x960 [ 55.930046][ T3629] filemap_read_folio+0x187/0x7d0 [ 55.935053][ T3629] ? hfs_writepage+0x30/0x30 [ 55.939621][ T3629] ? maybe_unlock_mmap_for_io+0x130/0x130 [ 55.945331][ T3629] ? filemap_alloc_folio+0x1ac/0x1c0 [ 55.950608][ T3629] do_read_cache_folio+0x2d3/0x790 [ 55.955700][ T3629] ? hfs_writepage+0x30/0x30 [ 55.960274][ T3629] read_cache_page+0x56/0x270 [ 55.964935][ T3629] hfs_btree_open+0x50c/0xf20 [ 55.969592][ T3629] ? hfs_mdb_get+0x1393/0x21a0 [ 55.974336][ T3629] hfs_mdb_get+0x1404/0x21a0 [ 55.978911][ T3629] ? hfs_xattr_set+0x5a0/0x5a0 [ 55.983655][ T3629] ? lockdep_softirqs_off+0x430/0x430 [ 55.989005][ T3629] ? do_raw_spin_unlock+0x134/0x8a0 [ 55.994183][ T3629] ? __raw_spin_lock_init+0x41/0x100 [ 55.999451][ T3629] hfs_fill_super+0xfc7/0x1690 [ 56.004199][ T3629] ? hfs_mount+0x40/0x40 [ 56.008424][ T3629] ? ptr_to_hashval+0x70/0x70 [ 56.013096][ T3629] ? snprintf+0xc0/0x110 [ 56.017324][ T3629] ? vscnprintf+0x80/0x80 [ 56.021636][ T3629] ? set_blocksize+0x1d5/0x360 [ 56.026383][ T3629] mount_bdev+0x26c/0x3a0 [ 56.030695][ T3629] ? hfs_mount+0x40/0x40 [ 56.034916][ T3629] legacy_get_tree+0xea/0x180 [ 56.039575][ T3629] ? hfs_mark_mdb_dirty+0x1b0/0x1b0 [ 56.044753][ T3629] vfs_get_tree+0x88/0x270 [ 56.049148][ T3629] do_new_mount+0x289/0xad0 [ 56.053633][ T3629] ? do_move_mount_old+0x150/0x150 [ 56.058725][ T3629] ? user_path_at_empty+0x149/0x1a0 [ 56.063902][ T3629] __se_sys_mount+0x2d3/0x3c0 [ 56.068562][ T3629] ? __x64_sys_mount+0xc0/0xc0 [ 56.073311][ T3629] ? syscall_enter_from_user_mode+0x2e/0x1d0 [ 56.079363][ T3629] ? __x64_sys_mount+0x1c/0xc0 [ 56.084107][ T3629] do_syscall_64+0x3d/0xb0 [ 56.088503][ T3629] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 56.094378][ T3629] RIP: 0033:0x7f556eefdb6a [ 56.098772][ T3629] Code: 83 c4 08 5b 5d c3 66 2e 0f 1f 84 00 00 00 00 00 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 c0 ff ff ff f7 d8 64 89 01 48 [ 56.118369][ T3629] RSP: 002b:00007fff8026e9f8 EFLAGS: 00000286 ORIG_RAX: 00000000000000a5 [ 56.126769][ T3629] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f556eefdb6a [ 56.134728][ T3629] RDX: 0000000020000240 RSI: 0000000020000280 RDI: 00007fff8026ea00 [ 56.142687][ T3629] RBP: 00007fff8026ea00 R08: 00007fff8026ea40 R09: 0000000000000258 [ 56.150641][ T3629] R10: 0000000000000003 R11: 0000000000000286 R12: 0000000000000004 [ 56.158591][ T3629] R13: 0000555555da72c0 R14: 00007fff8026ea40 R15: 0000000000000000 [ 56.166548][ T3629] [ 56.169547][ T3629] Modules linked in: [ 56.173692][ T3629] ---[ end trace 0000000000000000 ]--- [ 56.179230][ T3629] RIP: 0010:hfs_find_init+0x6e/0x1e0 [ 56.184541][ T3629] Code: d8 48 c1 e8 03 42 80 3c 28 00 74 08 48 89 df e8 88 e1 80 ff 48 c7 03 00 00 00 00 48 89 2c 24 4c 8d 75 40 4d 89 f7 49 c1 ef 03 <43> 8a 04 2f 84 c0 0f 85 0a 01 00 00 41 8b 06 8d 7c 00 04 be c0 0c [ 56.204805][ T3629] RSP: 0018:ffffc90003b3f2e0 EFLAGS: 00010202 [ 56.210911][ T3629] RAX: 1ffff92000767e7f RBX: ffffc90003b3f3f8 RCX: ffff888077c8d7c0 [ 56.219216][ T3629] RDX: 0000000000000000 RSI: ffffc90003b3f3e0 RDI: ffffc90003b3f3f0 [ 56.227773][ T3629] RBP: 0000000000000000 R08: ffffffff825efee7 R09: fffffbfff1cebe16 [ 56.236033][ T3629] R10: fffffbfff1cebe16 R11: 1ffffffff1cebe15 R12: ffffc90003b3f3e0 [ 56.244002][ T3629] R13: dffffc0000000000 R14: 0000000000000040 R15: 0000000000000008 [ 56.251993][ T3629] FS: 0000555555da7300(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000 [ 56.260966][ T3629] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 56.267566][ T3629] CR2: 00007f556ef20ab0 CR3: 0000000073938000 CR4: 00000000003506e0 [ 56.275557][ T3629] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 56.283622][ T3629] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 56.291618][ T3629] Kernel panic - not syncing: Fatal exception [ 56.297831][ T3629] Kernel Offset: disabled [ 56.302146][ T3629] Rebooting in 86400 seconds..