------------[ cut here ]------------ kernel BUG at fs/ext4/inode.c:2837! invalid opcode: 0000 [#1] PREEMPT SMP KASAN CPU: 0 PID: 377 Comm: kworker/u4:3 Not tainted 5.4.210-syzkaller-00006-gc80a5b2e7f63 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 Workqueue: writeback wb_workfn (flush-7:4) RIP: 0010:ext4_writepages+0x3a2b/0x3a50 fs/ext4/inode.c:2836 Code: 94 c3 40 0f 94 c6 31 ff e8 f2 9f a0 ff 84 db 75 2e e8 59 9d a0 ff 48 bb 00 00 00 00 00 fc ff df e9 a9 f6 ff ff e8 45 9d a0 ff <0f> 0b e8 3e 9d a0 ff 0f 0b e8 37 9d a0 ff e8 62 a5 3b ff eb a3 e8 RSP: 0000:ffff8881eb56f140 EFLAGS: 00010293 RAX: ffffffff81c4a22b RBX: 0000010000000000 RCX: ffff8881f32e0000 RDX: 0000000000000000 RSI: 0000010000000000 RDI: 0000000000000000 RBP: ffff8881eb56f510 R08: ffffffff81c470f7 R09: ffffed1033c7333a R10: ffffed1033c7333a R11: 1ffff11033c73339 R12: ffff88819e399a78 R13: ffff8881eb56f870 R14: 0000010410000000 R15: 0000000000000001 FS: 0000000000000000(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00005555565c6728 CR3: 00000001ef13b000 CR4: 00000000003406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: do_writepages+0x13a/0x280 mm/page-writeback.c:2344 __writeback_single_inode+0xc5/0x840 fs/fs-writeback.c:1467 writeback_sb_inodes+0xa04/0x1890 fs/fs-writeback.c:1730 wb_writeback+0x429/0xcb0 fs/fs-writeback.c:1905 wb_do_writeback+0x1f2/0xbd0 fs/fs-writeback.c:2050 wb_workfn+0xf8/0x450 fs/fs-writeback.c:2091 process_one_work+0x6ca/0xc40 kernel/workqueue.c:2287 worker_thread+0xae0/0x1440 kernel/workqueue.c:2433 kthread+0x2d8/0x360 kernel/kthread.c:288 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:352 Modules linked in: ---[ end trace e5ac9deb128c6342 ]--- RIP: 0010:ext4_writepages+0x3a2b/0x3a50 fs/ext4/inode.c:2836 Code: 94 c3 40 0f 94 c6 31 ff e8 f2 9f a0 ff 84 db 75 2e e8 59 9d a0 ff 48 bb 00 00 00 00 00 fc ff df e9 a9 f6 ff ff e8 45 9d a0 ff <0f> 0b e8 3e 9d a0 ff 0f 0b e8 37 9d a0 ff e8 62 a5 3b ff eb a3 e8 RSP: 0000:ffff8881eb56f140 EFLAGS: 00010293 RAX: ffffffff81c4a22b RBX: 0000010000000000 RCX: ffff8881f32e0000 RDX: 0000000000000000 RSI: 0000010000000000 RDI: 0000000000000000 RBP: ffff8881eb56f510 R08: ffffffff81c470f7 R09: ffffed1033c7333a R10: ffffed1033c7333a R11: 1ffff11033c73339 R12: ffff88819e399a78 R13: ffff8881eb56f870 R14: 0000010410000000 R15: 0000000000000001 FS: 0000000000000000(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f9553c77d28 CR3: 00000001ee219000 CR4: 00000000003406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400