------------[ cut here ]------------
kernel BUG at fs/buffer.c:2042!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 1 PID: 1652 Comm: syz-executor991 Not tainted 5.4.108-syzkaller-00846-g7af03784d889 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:__block_commit_write+0x23e/0x240 fs/buffer.c:2042
Code: 48 8b 5c 24 10 48 89 df be 08 00 00 00 e8 da 76 ed ff f0 80 0b 04 48 83 c4 20 5b 41 5c 41 5d 41 5e 41 5f 5d c3 e8 32 d6 be ff <0f> 0b 55 41 57 41 56 41 55 41 54 53 48 83 ec 30 4c 89 0c 24 4c 89
RSP: 0018:ffff8881f54ff1d8 EFLAGS: 00010293
RAX: ffffffff81a6710e RBX: 0000000000000000 RCX: ffff8881e2ac3f00
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffea0007736300 R08: ffffffff81a66f30 R09: fffff94000ee6c61
R10: fffff94000ee6c61 R11: 0000000000000000 R12: 00000000000000cf
R13: 00000000000000ce R14: 8000000000000015 R15: 00000000000000ce
FS:  00007f598be9a700(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00000000004d36c0 CR3: 00000001e5c12000 CR4: 00000000001406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 block_write_end+0x43/0x110 fs/buffer.c:2131
 ext4_write_end+0x225/0xe50 fs/ext4/inode.c:1455
 generic_perform_write+0x403/0x5a0 mm/filemap.c:3303
 __generic_file_write_iter+0x33a/0x480 mm/filemap.c:3389
 ext4_file_write_iter+0x93c/0x10e0 fs/ext4/file.c:270
 do_iter_readv_writev+0x547/0x750 include/linux/fs.h:1965
 do_iter_write+0x16f/0x570 fs/read_write.c:970
 iter_file_splice_write+0x79a/0xf20 fs/splice.c:746
 splice_direct_to_actor+0x4b4/0xb30 fs/splice.c:976
 do_splice_direct+0x28b/0x3e0 fs/splice.c:1064
 do_sendfile+0x8e4/0x1140 fs/read_write.c:1464
 __do_sys_sendfile64 fs/read_write.c:1525 [inline]
 __se_sys_sendfile64 fs/read_write.c:1511 [inline]
 __x64_sys_sendfile64+0x1c4/0x220 fs/read_write.c:1511
 do_syscall_64+0xcb/0x1e0 arch/x86/entry/common.c:290
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x44ac69
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 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 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f598be9a2f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000028
RAX: ffffffffffffffda RBX: 00000000004cd4e0 RCX: 000000000044ac69
RDX: 0000000000000000 RSI: 0000000000000004 RDI: 0000000000000003
RBP: 000000000049d0b4 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000010000 R11: 0000000000000246 R12: 0030656c69662f2e
R13: 000000000049c0b0 R14: 0000000300000002 R15: 00000000004cd4e8
Modules linked in:
---[ end trace 2e5172f5f9d2b14d ]---
RIP: 0010:__block_commit_write+0x23e/0x240 fs/buffer.c:2042
Code: 48 8b 5c 24 10 48 89 df be 08 00 00 00 e8 da 76 ed ff f0 80 0b 04 48 83 c4 20 5b 41 5c 41 5d 41 5e 41 5f 5d c3 e8 32 d6 be ff <0f> 0b 55 41 57 41 56 41 55 41 54 53 48 83 ec 30 4c 89 0c 24 4c 89
RSP: 0018:ffff8881f54ff1d8 EFLAGS: 00010293
RAX: ffffffff81a6710e RBX: 0000000000000000 RCX: ffff8881e2ac3f00
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffea0007736300 R08: ffffffff81a66f30 R09: fffff94000ee6c61
R10: fffff94000ee6c61 R11: 0000000000000000 R12: 00000000000000cf
R13: 00000000000000ce R14: 8000000000000015 R15: 00000000000000ce
FS:  00007f598be9a700(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f95300300f8 CR3: 00000001e5c12000 CR4: 00000000001406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400