./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor1822809632 <...> DUID 00:04:7b:a2:e0:73:6b:5f:a9:8e:d4:f6:53:82:b5:31:a7:5e no interfaces have a carrier [ 45.570359][ T4726] 8021q: adding VLAN 0 to HW filter on device bond0 [ 45.581779][ T4726] eql: remember to turn off Van-Jacobson compression on your slave devices Starting sshd: OK syzkaller Warning: Permanently added '10.128.0.65' (ED25519) to the list of known hosts. execve("./syz-executor1822809632", ["./syz-executor1822809632"], 0x7ffce755f720 /* 10 vars */) = 0 brk(NULL) = 0x5555569ae000 brk(0x5555569aed00) = 0x5555569aed00 arch_prctl(ARCH_SET_FS, 0x5555569ae380) = 0 set_tid_address(0x5555569ae650) = 5062 set_robust_list(0x5555569ae660, 24) = 0 rseq(0x5555569aeca0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor1822809632", 4096) = 28 getrandom("\x30\xc3\xf3\x6e\xa9\x82\xc6\x7a", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x5555569aed00 brk(0x5555569cfd00) = 0x5555569cfd00 brk(0x5555569d0000) = 0x5555569d0000 mprotect(0x7f48b6a0c000, 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) = 0x7f48ae55c000 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(0x7f48ae55c000, 138412032) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 ioctl(4, LOOP_SET_FD, 3) = 0 close(3) = 0 mkdir("./bus", 0777) = 0 syzkaller login: [ 70.055012][ T5062] loop0: detected capacity change from 0 to 64 [ 70.080327][ T5062] general protection fault, probably for non-canonical address 0xdffffc0000000008: 0000 [#1] PREEMPT SMP KASAN [ 70.092334][ T5062] KASAN: null-ptr-deref in range [0x0000000000000040-0x0000000000000047] [ 70.100740][ T5062] CPU: 1 PID: 5062 Comm: syz-executor182 Not tainted 6.7.0-rc3-syzkaller-00284-g815fb87b7530 #0 [ 70.111143][ T5062] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/10/2023 [ 70.121188][ T5062] RIP: 0010:hfs_find_init+0x72/0x1f0 [ 70.126527][ T5062] Code: d8 48 c1 e8 03 42 80 3c 28 00 74 08 48 89 df e8 e4 38 7f 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 0c 01 00 00 41 8b 06 8d 7c 00 04 be c0 [ 70.146128][ T5062] RSP: 0018:ffffc9000398f2c0 EFLAGS: 00010202 [ 70.152188][ T5062] RAX: 1ffff92000731e77 RBX: ffffc9000398f3b8 RCX: ffff88801dac8000 [ 70.160154][ T5062] RDX: 0000000000000000 RSI: ffffc9000398f3a0 RDI: ffffc9000398f3b0 [ 70.168130][ T5062] RBP: 0000000000000000 R08: ffffffff826c7c7f R09: 0000000000000000 [ 70.176088][ T5062] R10: ffffc9000398f3a0 R11: fffff52000731e7b R12: ffffc9000398f3a0 [ 70.184133][ T5062] R13: dffffc0000000000 R14: 0000000000000040 R15: 0000000000000008 [ 70.192098][ T5062] FS: 00005555569ae380(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000 [ 70.201134][ T5062] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 70.207710][ T5062] CR2: 00000000005fdeb8 CR3: 0000000066630000 CR4: 00000000003506f0 [ 70.215674][ T5062] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 70.223641][ T5062] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 70.231691][ T5062] Call Trace: [ 70.234963][ T5062] [ 70.237886][ T5062] ? __die_body+0x8b/0xe0 [ 70.242218][ T5062] ? die_addr+0xc9/0x100 [ 70.246472][ T5062] ? exc_general_protection+0x3c3/0x5b0 [ 70.252043][ T5062] ? asm_exc_general_protection+0x26/0x30 [ 70.257767][ T5062] ? hfs_get_block+0x3bf/0xb60 [ 70.262527][ T5062] ? hfs_find_init+0x72/0x1f0 [ 70.267207][ T5062] hfs_get_block+0x4f4/0xb60 [ 70.271797][ T5062] ? hfs_free_extents+0x420/0x420 [ 70.276829][ T5062] ? _raw_spin_unlock+0x28/0x40 [ 70.281697][ T5062] ? create_empty_buffers+0x53e/0x740 [ 70.287070][ T5062] block_read_full_folio+0x474/0xea0 [ 70.292357][ T5062] ? hfs_free_extents+0x420/0x420 [ 70.297381][ T5062] ? block_is_partially_uptodate+0x1f0/0x1f0 [ 70.303361][ T5062] ? folio_add_lru+0x9d0/0x9d0 [ 70.308123][ T5062] ? folio_add_lru+0x4b2/0x9d0 [ 70.312885][ T5062] ? folio_add_lru+0x27b/0x9d0 [ 70.317645][ T5062] filemap_read_folio+0x19c/0x780 [ 70.322668][ T5062] ? hfs_writepage+0x30/0x30 [ 70.327269][ T5062] ? maybe_unlock_mmap_for_io+0xe0/0xe0 [ 70.332825][ T5062] ? __filemap_get_folio+0x931/0xbb0 [ 70.338107][ T5062] ? __lock_acquire+0x1fd0/0x1fd0 [ 70.343133][ T5062] do_read_cache_folio+0x134/0x810 [ 70.348253][ T5062] ? hfs_writepage+0x30/0x30 [ 70.352839][ T5062] do_read_cache_page+0x30/0x200 [ 70.357777][ T5062] hfs_btree_open+0x50b/0xf20 [ 70.362449][ T5062] ? hfs_mdb_get+0x13d2/0x21b0 [ 70.367210][ T5062] hfs_mdb_get+0x1443/0x21b0 [ 70.371812][ T5062] ? hfs_xattr_set+0x5b0/0x5b0 [ 70.376585][ T5062] ? lockdep_softirqs_off+0x430/0x430 [ 70.381949][ T5062] ? __debug_object_init+0xec/0x310 [ 70.387142][ T5062] ? __raw_spin_lock_init+0x45/0x100 [ 70.392688][ T5062] hfs_fill_super+0x107d/0x1790 [ 70.397543][ T5062] ? hfs_mount+0x40/0x40 [ 70.401791][ T5062] ? clear_nonspinnable+0x60/0x60 [ 70.406809][ T5062] mount_bdev+0x237/0x300 [ 70.411148][ T5062] ? hfs_mount+0x40/0x40 [ 70.415394][ T5062] ? get_tree_bdev+0x5b0/0x5b0 [ 70.420159][ T5062] ? vfs_parse_fs_string+0x190/0x230 [ 70.425475][ T5062] ? vfs_parse_fs_param+0x410/0x410 [ 70.430771][ T5062] ? cap_capable+0x1b4/0x240 [ 70.435384][ T5062] legacy_get_tree+0xef/0x190 [ 70.440074][ T5062] ? hfs_mark_mdb_dirty+0x1c0/0x1c0 [ 70.445279][ T5062] vfs_get_tree+0x8c/0x2a0 [ 70.449695][ T5062] do_new_mount+0x28f/0xae0 [ 70.454203][ T5062] ? do_move_mount_old+0x170/0x170 [ 70.459324][ T5062] __se_sys_mount+0x2d9/0x3c0 [ 70.464111][ T5062] ? __x64_sys_mount+0xc0/0xc0 [ 70.468886][ T5062] ? syscall_enter_from_user_mode+0xa4/0x2d0 [ 70.474889][ T5062] ? syscall_enter_from_user_mode+0xf5/0x2d0 [ 70.480858][ T5062] ? __x64_sys_mount+0x20/0xc0 [ 70.485617][ T5062] do_syscall_64+0x45/0x110 [ 70.490124][ T5062] entry_SYSCALL_64_after_hwframe+0x63/0x6b [ 70.496015][ T5062] RIP: 0033:0x7f48b699a8ba [ 70.500420][ T5062] 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 [ 70.520019][ T5062] RSP: 002b:00007ffe52a9b1e8 EFLAGS: 00000286 ORIG_RAX: 00000000000000a5 [ 70.528427][ T5062] RAX: ffffffffffffffda RBX: 00007ffe52a9b200 RCX: 00007f48b699a8ba [ 70.536389][ T5062] RDX: 0000000020000100 RSI: 00000000200000c0 RDI: 00007ffe52a9b200 [ 70.544349][ T5062] RBP: 0000000000000004 R08: 00007ffe52a9b240 R09: 00000000000002ce [ 70.552324][ T5062] R10: 0000000000000410 R11: 0000000000000286 R12: 0000000000000410 [ 70.560286][ T5062] R13: 00007ffe52a9b240 R14: 0000000000000003 R15: 0000000000008000 [ 70.568252][ T5062] [ 70.571259][ T5062] Modules linked in: [ 70.575596][ T5062] ---[ end trace 0000000000000000 ]--- [ 70.581165][ T5062] RIP: 0010:hfs_find_init+0x72/0x1f0 [ 70.586530][ T5062] Code: d8 48 c1 e8 03 42 80 3c 28 00 74 08 48 89 df e8 e4 38 7f 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 0c 01 00 00 41 8b 06 8d 7c 00 04 be c0 [ 70.606208][ T5062] RSP: 0018:ffffc9000398f2c0 EFLAGS: 00010202 [ 70.612322][ T5062] RAX: 1ffff92000731e77 RBX: ffffc9000398f3b8 RCX: ffff88801dac8000 [ 70.620363][ T5062] RDX: 0000000000000000 RSI: ffffc9000398f3a0 RDI: ffffc9000398f3b0 [ 70.628424][ T5062] RBP: 0000000000000000 R08: ffffffff826c7c7f R09: 0000000000000000 [ 70.636464][ T5062] R10: ffffc9000398f3a0 R11: fffff52000731e7b R12: ffffc9000398f3a0 [ 70.644481][ T5062] R13: dffffc0000000000 R14: 0000000000000040 R15: 0000000000000008 [ 70.652515][ T5062] FS: 00005555569ae380(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000 [ 70.661579][ T5062] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 70.668207][ T5062] CR2: 00000000005fdeb8 CR3: 0000000066630000 CR4: 00000000003506f0 [ 70.676338][ T5062] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 70.684316][ T5062] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 70.692357][ T5062] Kernel panic - not syncing: Fatal exception [ 70.698758][ T5062] Kernel Offset: disabled [ 70.703079][ T5062] Rebooting in 86400 seconds..