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kernel BUG at fs/ext4/inode.c:2598!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 1 PID: 12515 Comm: syz-executor.4 Not tainted 5.9.0-rc3-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:mpage_prepare_extent_to_map+0xd34/0xd40 fs/ext4/inode.c:2598
Code: 89 e8 70 71 9f ff 0f 0b e8 99 7b 70 ff 4c 89 e7 48 c7 c6 0d a4 07 89 e8 5a 71 9f ff 0f 0b e8 83 7b 70 ff 0f 0b e8 7c 7b 70 ff <0f> 0b e8 55 fb 25 06 0f 1f 44 00 00 55 41 57 41 56 41 55 41 54 53
RSP: 0018:ffffc9000a1f74d8 EFLAGS: 00010293
RAX: ffffffff820480a4 RBX: 00fffe000000a01f RCX: ffff88809032e380
RDX: 0000000000000000 RSI: 000000000000a01f RDI: 000000000000ffff
RBP: ffffea00021e4600 R08: ffffffff82047ba4 R09: fffff9400043c8c1
R10: fffff9400043c8c1 R11: 0000000000000000 R12: ffffea00021e4600
R13: ffffc9000a1f77b0 R14: 1ffffd400043c8c1 R15: dffffc0000000000
FS:  00007fd2fc671700(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fe7675f0020 CR3: 0000000095fb8000 CR4: 00000000001506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 ext4_writepages+0xa98/0x3750 fs/ext4/inode.c:2735
 do_writepages+0xda/0x1f0 mm/page-writeback.c:2352
 __filemap_fdatawrite_range+0x2a5/0x350 mm/filemap.c:422
 filemap_write_and_wait_range+0xca/0x160 mm/filemap.c:655
 iomap_dio_rw+0x5a7/0xeb0 fs/iomap/direct-io.c:478
 ext4_dio_read_iter fs/ext4/file.c:77 [inline]
 ext4_file_read_iter+0x544/0x6d0 fs/ext4/file.c:129
 call_read_iter include/linux/fs.h:1876 [inline]
 generic_file_splice_read+0x3c5/0x640 fs/splice.c:312
 do_splice_to fs/splice.c:870 [inline]
 splice_direct_to_actor+0x3bd/0xb60 fs/splice.c:950
 do_splice_direct+0x201/0x340 fs/splice.c:1059
 do_sendfile+0x86d/0x1210 fs/read_write.c:1540
 __do_sys_sendfile64 fs/read_write.c:1601 [inline]
 __se_sys_sendfile64 fs/read_write.c:1587 [inline]
 __x64_sys_sendfile64+0x164/0x1a0 fs/read_write.c:1587
 do_syscall_64+0x31/0x70 arch/x86/entry/common.c:46
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x45d4d9
Code: 5d 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 2b b4 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007fd2fc670c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000028
RAX: ffffffffffffffda RBX: 0000000000027880 RCX: 000000000045d4d9
RDX: 0000000000000000 RSI: 0000000000000006 RDI: 0000000000000004
RBP: 000000000118cf88 R08: 0000000000000000 R09: 0000000000000000
R10: 00008400fffffffb R11: 0000000000000246 R12: 000000000118cf4c
R13: 00007ffd753cf47f R14: 00007fd2fc6719c0 R15: 000000000118cf4c
Modules linked in:
---[ end trace ff541400531ff2fb ]---
RIP: 0010:mpage_prepare_extent_to_map+0xd34/0xd40 fs/ext4/inode.c:2598
Code: 89 e8 70 71 9f ff 0f 0b e8 99 7b 70 ff 4c 89 e7 48 c7 c6 0d a4 07 89 e8 5a 71 9f ff 0f 0b e8 83 7b 70 ff 0f 0b e8 7c 7b 70 ff <0f> 0b e8 55 fb 25 06 0f 1f 44 00 00 55 41 57 41 56 41 55 41 54 53
RSP: 0018:ffffc9000a1f74d8 EFLAGS: 00010293
RAX: ffffffff820480a4 RBX: 00fffe000000a01f RCX: ffff88809032e380
RDX: 0000000000000000 RSI: 000000000000a01f RDI: 000000000000ffff
RBP: ffffea00021e4600 R08: ffffffff82047ba4 R09: fffff9400043c8c1
R10: fffff9400043c8c1 R11: 0000000000000000 R12: ffffea00021e4600
R13: ffffc9000a1f77b0 R14: 1ffffd400043c8c1 R15: dffffc0000000000
FS:  00007fd2fc671700(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000001590004 CR3: 0000000095fb8000 CR4: 00000000001506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400