------------[ cut here ]------------
kernel BUG at fs/ext4/inode.c:2618!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 0 PID: 21943 Comm: syz-executor.0 Not tainted 5.11.0-rc1-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:mpage_prepare_extent_to_map+0xb22/0xe00 fs/ext4/inode.c:2618
Code: 89 ef e8 c1 b3 9d ff 0f 0b e8 7a 1e 6d ff 48 8d 6b ff e9 1f fc ff ff e8 6c 1e 6d ff 48 8d 5d ff e9 6b fc ff ff e8 5e 1e 6d ff <0f> 0b e8 57 1e 6d ff 48 c7 c6 20 d5 5e 89 4c 89 ef e8 88 b3 9d ff
RSP: 0018:ffffc90009a6eeb0 EFLAGS: 00010212
RAX: 000000000000525c RBX: 0000000000008000 RCX: ffffc9000bcec000
RDX: 0000000000040000 RSI: ffffffff82055632 RDI: 0000000000000003
RBP: ffffea00010a5208 R08: 0000000000000000 R09: ffffea0000c07987
R10: ffffffff820552cf R11: 0000000000000000 R12: dffffc0000000000
R13: ffffea0000c07980 R14: ffffc90009a6f230 R15: 0000000000000000
FS:  00007fb66cda9700(0000) GS:ffff8880b9e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020000000 CR3: 0000000013ce7000 CR4: 0000000000350ef0
Call Trace:
 ext4_writepages+0x95f/0x38a0 fs/ext4/inode.c:2755
 do_writepages+0xec/0x290 mm/page-writeback.c:2352
 __filemap_fdatawrite_range+0x2a1/0x380 mm/filemap.c:422
 file_write_and_wait_range+0x169/0x200 mm/filemap.c:761
 ext4_sync_file+0x21f/0xfe0 fs/ext4/fsync.c:151
 vfs_fsync_range+0x13a/0x220 fs/sync.c:200
 generic_write_sync include/linux/fs.h:2737 [inline]
 ext4_buffered_write_iter+0x36a/0x4d0 fs/ext4/file.c:278
 ext4_file_write_iter+0x422/0x1400 fs/ext4/file.c:664
 call_write_iter include/linux/fs.h:1901 [inline]
 do_iter_readv_writev+0x46f/0x740 fs/read_write.c:740
 do_iter_write+0x188/0x670 fs/read_write.c:866
 vfs_iter_write+0x70/0xa0 fs/read_write.c:907
 iter_file_splice_write+0x762/0xc30 fs/splice.c:686
 do_splice_from fs/splice.c:764 [inline]
 direct_splice_actor+0x110/0x180 fs/splice.c:933
 splice_direct_to_actor+0x38c/0x980 fs/splice.c:888
 do_splice_direct+0x1b3/0x280 fs/splice.c:976
 do_sendfile+0x54f/0x1090 fs/read_write.c:1257
 __do_sys_sendfile64 fs/read_write.c:1318 [inline]
 __se_sys_sendfile64 fs/read_write.c:1304 [inline]
 __x64_sys_sendfile64+0x1cc/0x210 fs/read_write.c:1304
 do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x45e299
Code: 0d b4 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 db b3 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007fb66cda8c68 EFLAGS: 00000246 ORIG_RAX: 0000000000000028
RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 000000000045e299
RDX: 0000000000000000 RSI: 0000000000000007 RDI: 0000000000000009
RBP: 000000000119bfc8 R08: 0000000000000000 R09: 0000000000000000
R10: 000000000000a198 R11: 0000000000000246 R12: 000000000119bf8c
R13: 00007ffdd09aa53f R14: 00007fb66cda99c0 R15: 000000000119bf8c
Modules linked in:
---[ end trace b7e4f60235343fc2 ]---
RIP: 0010:mpage_prepare_extent_to_map+0xb22/0xe00 fs/ext4/inode.c:2618
Code: 89 ef e8 c1 b3 9d ff 0f 0b e8 7a 1e 6d ff 48 8d 6b ff e9 1f fc ff ff e8 6c 1e 6d ff 48 8d 5d ff e9 6b fc ff ff e8 5e 1e 6d ff <0f> 0b e8 57 1e 6d ff 48 c7 c6 20 d5 5e 89 4c 89 ef e8 88 b3 9d ff
RSP: 0018:ffffc90009a6eeb0 EFLAGS: 00010212
RAX: 000000000000525c RBX: 0000000000008000 RCX: ffffc9000bcec000
RDX: 0000000000040000 RSI: ffffffff82055632 RDI: 0000000000000003
RBP: ffffea00010a5208 R08: 0000000000000000 R09: ffffea0000c07987
R10: ffffffff820552cf R11: 0000000000000000 R12: dffffc0000000000
R13: ffffea0000c07980 R14: ffffc90009a6f230 R15: 0000000000000000
FS:  00007fb66cda9700(0000) GS:ffff8880b9f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f443ac7c010 CR3: 0000000013ce7000 CR4: 0000000000350ee0