------------[ cut here ]------------ kernel BUG at fs/buffer.c:555! invalid opcode: 0000 [#1] PREEMPT SMP KASAN CPU: 0 PID: 4517 Comm: syz-executor.3 Tainted: G W 5.4.65-syzkaller-00175-g63d1c2f0b547 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:mark_buffer_dirty_inode+0x2f6/0x300 fs/buffer.c:555 Code: e8 1f c8 ed ff 48 8b 44 24 10 49 89 06 48 8b 7c 24 18 48 83 c4 20 5b 41 5c 41 5d 41 5e 41 5f 5d e9 af 28 51 02 e8 6a 13 c0 ff <0f> 0b 0f 1f 84 00 00 00 00 00 41 57 41 56 41 55 41 54 53 49 89 fe RSP: 0018:ffff8881ae43f608 EFLAGS: 00010293 RAX: ffffffff818155d6 RBX: ffff88819c40e1a0 RCX: ffff8881cc6b2e80 RDX: 0000000000000000 RSI: ffff8881cc6b326c RDI: ffff8881cc6b2e80 RBP: 1ffff11033881c34 R08: ffffffff8163036d R09: fffff94000be2b11 R10: fffff94000be2b11 R11: 0000000000000000 R12: dffffc0000000000 R13: ffff8881806bedc8 R14: ffff88819c40e100 R15: 0000000000000000 FS: 0000000002647940(0000) GS:ffff8881db800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007efdf6028000 CR3: 00000001ce7f0003 CR4: 00000000001606f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600 Call Trace: __ext4_handle_dirty_metadata+0x15c/0x900 fs/ext4/ext4_jbd2.c:296 ext4_handle_dirty_dirblock+0x363/0x6e0 fs/ext4/namei.c:406 add_dirent_to_buf+0x5a4/0x6e0 fs/ext4/namei.c:2133 ext4_add_entry+0x26a6/0x42a0 fs/ext4/namei.c:2346 ext4_add_nondir fs/ext4/namei.c:2678 [inline] ext4_symlink+0x9ab/0x1020 fs/ext4/namei.c:3464 vfs_symlink+0x369/0x500 fs/namei.c:4206 do_symlinkat+0x195/0x420 fs/namei.c:4233 do_syscall_64+0xcb/0x150 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x45dea7 Code: 0f 1f 00 b8 5c 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 fd b4 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 b8 58 00 00 00 0f 05 <48> 3d 01 f0 ff ff 0f 83 dd b4 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007ffe09b533c8 EFLAGS: 00000202 ORIG_RAX: 0000000000000058 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 000000000045dea7 RDX: 00007ffe09b53467 RSI: 00000000004c3aa1 RDI: 00007ffe09b53450 RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000017 R10: 0000000000000075 R11: 0000000000000202 R12: 0000000000000001 R13: 00007ffe09b53400 R14: 0000000000000000 R15: 00007ffe09b53410 Modules linked in: ---[ end trace 78ef2438fd7e5b48 ]--- RIP: 0010:mark_buffer_dirty_inode+0x2f6/0x300 fs/buffer.c:555 Code: e8 1f c8 ed ff 48 8b 44 24 10 49 89 06 48 8b 7c 24 18 48 83 c4 20 5b 41 5c 41 5d 41 5e 41 5f 5d e9 af 28 51 02 e8 6a 13 c0 ff <0f> 0b 0f 1f 84 00 00 00 00 00 41 57 41 56 41 55 41 54 53 49 89 fe RSP: 0018:ffff8881ae43f608 EFLAGS: 00010293 RAX: ffffffff818155d6 RBX: ffff88819c40e1a0 RCX: ffff8881cc6b2e80 RDX: 0000000000000000 RSI: ffff8881cc6b326c RDI: ffff8881cc6b2e80 RBP: 1ffff11033881c34 R08: ffffffff8163036d R09: fffff94000be2b11 R10: fffff94000be2b11 R11: 0000000000000000 R12: dffffc0000000000 R13: ffff8881806bedc8 R14: ffff88819c40e100 R15: 0000000000000000 FS: 0000000002647940(0000) GS:ffff8881db800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007efdf6030000 CR3: 00000001ce7f0005 CR4: 00000000001606f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600