./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor1714802239 <...> DUID 00:04:76:8b:f6:84:a4:3b:36:39:6c:68:e7:10:38:dd:b7:2c forked to background, child pid 4660 [ 29.313034][ T4661] 8021q: adding VLAN 0 to HW filter on device bond0 [ 29.325003][ T4661] eql: remember to turn off Van-Jacobson compression on your slave devices Starting sshd: OK syzkaller Warning: Permanently added '10.128.1.151' (ECDSA) to the list of known hosts. execve("./syz-executor1714802239", ["./syz-executor1714802239"], 0x7ffda03a78a0 /* 10 vars */) = 0 brk(NULL) = 0x5555555ff000 brk(0x5555555ffc40) = 0x5555555ffc40 arch_prctl(ARCH_SET_FS, 0x5555555ff300) = 0 uname({sysname="Linux", nodename="syzkaller", ...}) = 0 readlink("/proc/self/exe", "/root/syz-executor1714802239", 4096) = 28 brk(0x555555620c40) = 0x555555620c40 brk(0x555555621000) = 0x555555621000 mprotect(0x7f74e4751000, 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) = 0x7f74dc297000 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"..., 4194304) = 4194304 munmap(0x7f74dc297000, 4194304) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 syzkaller login: [ 55.523795][ T4992] memfd_create() without MFD_EXEC nor MFD_NOEXEC_SEAL, pid=4992 'syz-executor171' ioctl(4, LOOP_SET_FD, 3) = 0 close(3) = 0 mkdir("./file0", 0777) = 0 [ 55.570277][ T4992] loop0: detected capacity change from 0 to 8192 [ 55.581387][ T4992] REISERFS warning: read_super_block: reiserfs filesystem is deprecated and scheduled to be removed from the kernel in 2025 [ 55.594501][ T4992] REISERFS (device loop0): found reiserfs format "3.6" with non-standard journal [ 55.603816][ T4992] REISERFS (device loop0): using ordered data mode [ 55.610618][ T4992] reiserfs: using flush barriers [ 55.617384][ T4992] REISERFS (device loop0): journal params: device loop0, size 512, journal first block 18, max trans len 256, max batch 225, max commit age 30, max trans age 30 [ 55.633840][ T4992] REISERFS (device loop0): checking transaction log (loop0) [ 55.673083][ T4992] REISERFS (device loop0): Using r5 hash to sort names [ 55.680989][ T4992] REISERFS panic (device loop0): vs-13065 update_stat_data: key [1 2 0x0 SD], found item *3.5*[1 2 0(0) DIR], item_len 80, item_location 3972, free_space(entry_count) 3 [ 55.697920][ T4992] ------------[ cut here ]------------ [ 55.703360][ T4992] kernel BUG at fs/reiserfs/prints.c:390! [ 55.709109][ T4992] invalid opcode: 0000 [#1] PREEMPT SMP KASAN [ 55.715170][ T4992] CPU: 1 PID: 4992 Comm: syz-executor171 Not tainted 6.4.0-rc6-syzkaller-00279-g8c1f0c38b310 #0 [ 55.725568][ T4992] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/27/2023 [ 55.735603][ T4992] RIP: 0010:__reiserfs_panic+0x13e/0x140 [ 55.741236][ T4992] Code: c7 c1 a0 b8 fb 8a 48 0f 44 c8 48 0f 44 d8 48 c7 c7 60 b9 fb 8a 4c 89 fe 48 89 da 4d 89 f0 49 c7 c1 60 ba ca 91 e8 02 e6 7f 08 <0f> 0b f3 0f 1e fa 55 48 89 e5 41 57 41 56 41 55 41 54 53 48 83 e4 [ 55.760825][ T4992] RSP: 0018:ffffc900039ff540 EFLAGS: 00010246 [ 55.766981][ T4992] RAX: 00000000000000a6 RBX: ffffffff8afb70a0 RCX: f689ed6d42ab1d00 [ 55.775039][ T4992] RDX: 0000000000000000 RSI: 0000000080000000 RDI: 0000000000000000 [ 55.782994][ T4992] RBP: ffffc900039ff630 R08: ffffffff816f00ac R09: fffff5200073fe5d [ 55.790950][ T4992] R10: 0000000000000000 R11: dffffc0000000001 R12: ffffffff8afb70c0 [ 55.798999][ T4992] R13: ffffc900039ff560 R14: ffffffff8c853954 R15: ffff88802858a6a8 [ 55.807055][ T4992] FS: 00005555555ff300(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000 [ 55.815982][ T4992] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 55.822558][ T4992] CR2: 00007ffd381ee000 CR3: 0000000078523000 CR4: 00000000003506e0 [ 55.830523][ T4992] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 55.838484][ T4992] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 55.846630][ T4992] Call Trace: [ 55.849901][ T4992] [ 55.852824][ T4992] ? __die_body+0x5e/0xa0 [ 55.857149][ T4992] ? die+0x87/0xb0 [ 55.860867][ T4992] ? do_trap+0x11e/0x350 [ 55.865114][ T4992] ? __reiserfs_panic+0x13e/0x140 [ 55.870303][ T4992] ? __reiserfs_panic+0x13e/0x140 [ 55.875319][ T4992] ? do_error_trap+0x141/0x1f0 [ 55.880070][ T4992] ? __reiserfs_panic+0x13e/0x140 [ 55.885086][ T4992] ? do_int3+0x30/0x30 [ 55.889146][ T4992] ? handle_invalid_op+0x2c/0x40 [ 55.894070][ T4992] ? __reiserfs_panic+0x13e/0x140 [ 55.899095][ T4992] ? exc_invalid_op+0x33/0x50 [ 55.903768][ T4992] ? asm_exc_invalid_op+0x1a/0x20 [ 55.908810][ T4992] ? __wake_up_klogd+0xcc/0x100 [ 55.913681][ T4992] ? __reiserfs_panic+0x13e/0x140 [ 55.918752][ T4992] ? reiserfs_debug+0x10/0x10 [ 55.923643][ T4992] reiserfs_update_sd_size+0xfd5/0x10b0 [ 55.931904][ T4992] ? restart_transaction+0x1e0/0x1e0 [ 55.937258][ T4992] ? journal_begin+0x1f3/0x360 [ 55.942116][ T4992] reiserfs_mkdir+0x75c/0x8f0 [ 55.946844][ T4992] ? reiserfs_symlink+0x720/0x720 [ 55.951992][ T4992] ? __down_write_common+0x161/0x200 [ 55.957326][ T4992] ? __up_read+0x690/0x690 [ 55.962294][ T4992] reiserfs_xattr_init+0x323/0x670 [ 55.969105][ T4992] reiserfs_fill_super+0x2207/0x2620 [ 55.975133][ T4992] ? reiserfs_kill_sb+0x150/0x150 [ 55.980543][ T4992] ? snprintf+0xda/0x120 [ 55.985283][ T4992] ? sb_set_blocksize+0x99/0x100 [ 55.990267][ T4992] mount_bdev+0x2d0/0x3f0 [ 55.994987][ T4992] ? reiserfs_kill_sb+0x150/0x150 [ 56.000212][ T4992] legacy_get_tree+0xef/0x190 [ 56.005257][ T4992] ? remove_save_link+0x540/0x540 [ 56.010655][ T4992] vfs_get_tree+0x8c/0x270 [ 56.015270][ T4992] do_new_mount+0x28f/0xae0 [ 56.020220][ T4992] ? path_mount+0x5f2/0xf80 [ 56.025022][ T4992] ? do_move_mount_old+0x170/0x170 [ 56.032243][ T4992] ? user_path_at_empty+0x12f/0x180 [ 56.038606][ T4992] __se_sys_mount+0x2d9/0x3c0 [ 56.043668][ T4992] ? __x64_sys_mount+0xc0/0xc0 [ 56.048984][ T4992] ? syscall_enter_from_user_mode+0x32/0x230 [ 56.055390][ T4992] ? __x64_sys_mount+0x20/0xc0 [ 56.060684][ T4992] do_syscall_64+0x41/0xc0 [ 56.066166][ T4992] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 56.072606][ T4992] RIP: 0033:0x7f74e46e4b1a [ 56.077116][ T4992] 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 [ 56.099113][ T4992] RSP: 002b:00007ffd381ed7d8 EFLAGS: 00000286 ORIG_RAX: 00000000000000a5 [ 56.107816][ T4992] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f74e46e4b1a [ 56.119299][ T4992] RDX: 0000000020001100 RSI: 00000000200000c0 RDI: 00007ffd381ed7f0 [ 56.127749][ T4992] RBP: 00007ffd381ed7f0 R08: 00007ffd381ed830 R09: 00000000000010f1 [ 56.138291][ T4992] R10: 0000000000800008 R11: 0000000000000286 R12: 0000000000000004 [ 56.148424][ T4992] R13: 00005555555ff2c0 R14: 0000000000800008 R15: 00007ffd381ed830 [ 56.157315][ T4992] [ 56.160959][ T4992] Modules linked in: [ 56.166251][ T4992] ---[ end trace 0000000000000000 ]--- [ 56.172139][ T4992] RIP: 0010:__reiserfs_panic+0x13e/0x140 [ 56.179464][ T4992] Code: c7 c1 a0 b8 fb 8a 48 0f 44 c8 48 0f 44 d8 48 c7 c7 60 b9 fb 8a 4c 89 fe 48 89 da 4d 89 f0 49 c7 c1 60 ba ca 91 e8 02 e6 7f 08 <0f> 0b f3 0f 1e fa 55 48 89 e5 41 57 41 56 41 55 41 54 53 48 83 e4 [ 56.201561][ T4992] RSP: 0018:ffffc900039ff540 EFLAGS: 00010246 [ 56.207767][ T4992] RAX: 00000000000000a6 RBX: ffffffff8afb70a0 RCX: f689ed6d42ab1d00 [ 56.216736][ T4992] RDX: 0000000000000000 RSI: 0000000080000000 RDI: 0000000000000000 [ 56.224889][ T4992] RBP: ffffc900039ff630 R08: ffffffff816f00ac R09: fffff5200073fe5d [ 56.234066][ T4992] R10: 0000000000000000 R11: dffffc0000000001 R12: ffffffff8afb70c0 [ 56.242464][ T4992] R13: ffffc900039ff560 R14: ffffffff8c853954 R15: ffff88802858a6a8 [ 56.251550][ T4992] FS: 00005555555ff300(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000 [ 56.261323][ T4992] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 56.270270][ T4992] CR2: 00007ffd381ee000 CR3: 0000000078523000 CR4: 00000000003506e0 [ 56.278647][ T4992] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 56.287632][ T4992] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 56.295923][ T4992] Kernel panic - not syncing: Fatal exception [ 56.302448][ T4992] Kernel Offset: disabled [ 56.307218][ T4992] Rebooting in 86400 seconds..