EXT4-fs error (device loop2): htree_dirblock_to_tree:1112: inode #2: block 13: comm syz-executor: bad entry in directory: rec_len is smaller than minimal - offset=76, inode=0, rec_len=0, size=1024 fake=0 ------------[ cut here ]------------ kernel BUG at fs/namei.c:2933! invalid opcode: 0000 [#1] PREEMPT SMP KASAN CPU: 0 PID: 10647 Comm: syz-executor Not tainted 5.15.167-syzkaller-00002-g3bfe08931bff #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 RIP: 0010:may_delete+0x6eb/0x6f0 fs/namei.c:2933 Code: 44 89 e1 80 e1 07 80 c1 03 38 c1 0f 8c 7f fe ff ff 4c 89 e7 e8 06 71 f4 ff e9 72 fe ff ff e8 7c 18 b2 ff 0f 0b e8 75 18 b2 ff <0f> 0b 0f 1f 00 55 48 89 e5 41 56 53 48 89 fb e8 61 18 b2 ff 4c 8d RSP: 0018:ffffc90000947c70 EFLAGS: 00010293 RAX: ffffffff81be3f0b RBX: ffff8881261bfcf0 RCX: ffff8881073b0000 RDX: 0000000000000000 RSI: 0000000000200000 RDI: 0000000000000000 RBP: ffffc90000947cd8 R08: ffffffff81be389f R09: 0000000000000003 R10: fffff52000128f70 R11: dffffc0000000001 R12: ffff8881c4dc6000 R13: 1ffff110389b8c00 R14: ffff88812c9d6a88 R15: dffffc0000000000 FS: 000055556aa25500(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020001000 CR3: 00000001059a5000 CR4: 00000000003506b0 DR0: 0000000000000000 DR1: fffffffffffffff7 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: vfs_rmdir+0x32/0x470 fs/namei.c:4130 incfs_kill_sb+0x113/0x230 fs/incfs/vfs.c:1989 deactivate_locked_super+0xad/0x110 fs/super.c:335 deactivate_super+0xbe/0xf0 fs/super.c:366 cleanup_mnt+0x45c/0x510 fs/namespace.c:1143 __cleanup_mnt+0x19/0x20 fs/namespace.c:1150 task_work_run+0x129/0x190 kernel/task_work.c:188 tracehook_notify_resume include/linux/tracehook.h:189 [inline] exit_to_user_mode_loop+0xc4/0xe0 kernel/entry/common.c:181 exit_to_user_mode_prepare+0x5a/0xa0 kernel/entry/common.c:214 __syscall_exit_to_user_mode_work kernel/entry/common.c:296 [inline] syscall_exit_to_user_mode+0x26/0x160 kernel/entry/common.c:307 do_syscall_64+0x47/0xb0 arch/x86/entry/common.c:86 entry_SYSCALL_64_after_hwframe+0x66/0xd0 RIP: 0033:0x7f3419feba47 Code: a8 ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 0f 1f 44 00 00 31 f6 e9 09 00 00 00 66 0f 1f 84 00 00 00 00 00 b8 a6 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 01 c3 48 c7 c2 a8 ff ff ff f7 d8 64 89 02 b8 RSP: 002b:00007ffd081b6ae8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6 RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007f3419feba47 RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffd081b6ba0 RBP: 00007ffd081b6ba0 R08: 0000000000000000 R09: 0000000000000000 R10: 00000000ffffffff R11: 0000000000000246 R12: 00007ffd081b7c90 R13: 00007f341a05d5fc R14: 00000000000c937a R15: 00007ffd081b8d50 Modules linked in: ---[ end trace 27bd6420fe994919 ]--- RIP: 0010:may_delete+0x6eb/0x6f0 fs/namei.c:2933 Code: 44 89 e1 80 e1 07 80 c1 03 38 c1 0f 8c 7f fe ff ff 4c 89 e7 e8 06 71 f4 ff e9 72 fe ff ff e8 7c 18 b2 ff 0f 0b e8 75 18 b2 ff <0f> 0b 0f 1f 00 55 48 89 e5 41 56 53 48 89 fb e8 61 18 b2 ff 4c 8d RSP: 0018:ffffc90000947c70 EFLAGS: 00010293 RAX: ffffffff81be3f0b RBX: ffff8881261bfcf0 RCX: ffff8881073b0000 RDX: 0000000000000000 RSI: 0000000000200000 RDI: 0000000000000000 RBP: ffffc90000947cd8 R08: ffffffff81be389f R09: 0000000000000003 R10: fffff52000128f70 R11: dffffc0000000001 R12: ffff8881c4dc6000 R13: 1ffff110389b8c00 R14: ffff88812c9d6a88 R15: dffffc0000000000 FS: 000055556aa25500(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020000140 CR3: 00000001059a5000 CR4: 00000000003506b0 DR0: 0000000000000000 DR1: fffffffffffffff7 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400