------------[ cut here ]------------
kernel BUG at mm/rmap.c:2343!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 0 PID: 130 Comm: kworker/u4:3 Not tainted 5.14.0-rc3-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: writeback wb_workfn (flush-8:0)
RIP: 0010:rmap_walk_file+0x44d/0x700 mm/rmap.c:2343
Code: ff 48 c7 c7 f2 ff ff ff 49 89 c5 48 89 c6 e8 ca 95 c6 ff 49 83 fd f2 0f 85 b0 fe ff ff e8 5b 90 c6 ff 48 89 ef e8 da 50 3a 07 <0f> 0b e8 4c 90 c6 ff 8b 5c 24 24 31 ff 89 de e8 7f 96 c6 ff 84 db
RSP: 0018:ffffc900013bf000 EFLAGS: 00010283
RAX: 0000000000000102 RBX: ffffc900013bf0c0 RCX: 0000000000000000
RDX: ffff8880145b1c40 RSI: ffffffff815d68c5 RDI: fffff52000277ddb
RBP: ffff888000101c60 R08: 0000000000000102 R09: 0000000000000000
R10: ffffffff815d06fe R11: 0000000000000000 R12: ffffea0001b68080
R13: fffffffffffffff2 R14: dffffc0000000000 R15: 0000000000000000
FS:  0000000000000000(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000542978 CR3: 0000000014dc2000 CR4: 00000000001506f0
Call Trace:
 rmap_walk+0x10d/0x190 mm/rmap.c:2367
 page_mkclean+0x222/0x2c0 mm/rmap.c:1002
 clear_page_dirty_for_io+0x325/0xa40 mm/page-writeback.c:2710
 mpage_submit_page+0x80/0x2a0 fs/ext4/inode.c:2080
 mpage_process_page_bufs+0x681/0x7a0 fs/ext4/inode.c:2214
 mpage_prepare_extent_to_map+0x945/0xe50 fs/ext4/inode.c:2626
 ext4_writepages+0x928/0x3ba0 fs/ext4/inode.c:2754
 do_writepages+0xec/0x290 mm/page-writeback.c:2355
 __writeback_single_inode+0x126/0xff0 fs/fs-writeback.c:1613
 writeback_sb_inodes+0x53d/0xf00 fs/fs-writeback.c:1878
 __writeback_inodes_wb+0xc6/0x280 fs/fs-writeback.c:1947
 wb_writeback+0x814/0xc50 fs/fs-writeback.c:2053
 wb_check_start_all fs/fs-writeback.c:2177 [inline]
 wb_do_writeback fs/fs-writeback.c:2203 [inline]
 wb_workfn+0xb77/0x12d0 fs/fs-writeback.c:2237
 process_one_work+0x98d/0x1630 kernel/workqueue.c:2276
 worker_thread+0x658/0x11f0 kernel/workqueue.c:2422
 kthread+0x3e5/0x4d0 kernel/kthread.c:319
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
Modules linked in:
---[ end trace b23fe14744ad764d ]---
RIP: 0010:rmap_walk_file+0x44d/0x700 mm/rmap.c:2343
Code: ff 48 c7 c7 f2 ff ff ff 49 89 c5 48 89 c6 e8 ca 95 c6 ff 49 83 fd f2 0f 85 b0 fe ff ff e8 5b 90 c6 ff 48 89 ef e8 da 50 3a 07 <0f> 0b e8 4c 90 c6 ff 8b 5c 24 24 31 ff 89 de e8 7f 96 c6 ff 84 db
RSP: 0018:ffffc900013bf000 EFLAGS: 00010283
RAX: 0000000000000102 RBX: ffffc900013bf0c0 RCX: 0000000000000000
RDX: ffff8880145b1c40 RSI: ffffffff815d68c5 RDI: fffff52000277ddb
RBP: ffff888000101c60 R08: 0000000000000102 R09: 0000000000000000
R10: ffffffff815d06fe R11: 0000000000000000 R12: ffffea0001b68080
R13: fffffffffffffff2 R14: dffffc0000000000 R15: 0000000000000000
FS:  0000000000000000(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f3064d0c000 CR3: 0000000034153000 CR4: 00000000001506e0