[syzbot] WARNING in submit_bio_noacct

syzbot
2022-03-01T15:10:27Z

Hello,

syzbot found the following issue on:

HEAD commit: 196d330d7fb1 Add linux-next specific files for 20220222
git tree: linux-next
console output: https://syzkaller.appspot.com/x/log.txt?x=14ac04a2700000
kernel config: https://syzkaller.appspot.com/x/.config?x=45b71d0aea81d553
dashboard link: https://syzkaller.appspot.com/bug?extid=7fdd158f9797accbebfc
compiler: gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2

Unfortunately, I don't have any reproducer for this issue yet.

IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+7fdd158f9797accbebfc@syzkaller.appspotmail.com

Trying to write to read-only block-device sda1 (partno 1)
WARNING: CPU: 0 PID: 4281 at block/blk-core.c:581 bio_check_ro block/blk-core.c:581 [inline]
WARNING: CPU: 0 PID: 4281 at block/blk-core.c:581 submit_bio_noacct+0x16f3/0x1be0 block/blk-core.c:810
Modules linked in:
CPU: 0 PID: 4281 Comm: syz-executor.3 Not tainted 5.17.0-rc5-next-20220222-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:bio_check_ro block/blk-core.c:581 [inline]
RIP: 0010:submit_bio_noacct+0x16f3/0x1be0 block/blk-core.c:810
Code: 00 00 45 0f b6 a4 24 50 05 00 00 48 8d 74 24 60 48 89 ef e8 ff 2d fe ff 48 c7 c7 e0 7b 04 8a 48 89 c6 44 89 e2 e8 71 9f 3f 05 <0f> 0b e9 91 f3 ff ff e8 d1 e3 ad fd e8 5c c8 83 05 31 ff 89 c3 89
RSP: 0018:ffffc90010956e18 EFLAGS: 00010282
RAX: 0000000000000000 RBX: ffff88801ae02da0 RCX: 0000000000000000
RDX: 0000000000040000 RSI: ffffffff816038e8 RDI: fffff5200212adb5
RBP: ffff888075db4780 R08: 0000000000000000 R09: 0000000000000000
R10: ffffffff815fe2ae R11: 0000000000000000 R12: 0000000000000001
R13: ffff888075db4790 R14: ffff888016f0d080 R15: 1ffff9200212adcb
FS: 00007ff14f7f9700(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f8be596c058 CR3: 000000006bacb000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
<TASK>
submit_bio block/blk-core.c:941 [inline]
submit_bio+0x1a0/0x350 block/blk-core.c:905
ext4_io_submit+0x181/0x210 fs/ext4/page-io.c:379
ext4_writepages+0x1450/0x3b90 fs/ext4/inode.c:2798
do_writepages+0x1ab/0x690 mm/page-writeback.c:2447
filemap_fdatawrite_wbc mm/filemap.c:384 [inline]
filemap_fdatawrite_wbc+0x143/0x1b0 mm/filemap.c:374
__filemap_fdatawrite_range mm/filemap.c:417 [inline]
file_write_and_wait_range+0x163/0x1e0 mm/filemap.c:775
ext4_sync_file+0x21f/0xfd0 fs/ext4/fsync.c:151
vfs_fsync_range+0x13a/0x220 fs/sync.c:188
generic_write_sync include/linux/fs.h:2796 [inline]
ext4_buffered_write_iter+0x2b7/0x390 fs/ext4/file.c:277
ext4_file_write_iter+0x43c/0x1510 fs/ext4/file.c:679
call_write_iter include/linux/fs.h:2095 [inline]
do_iter_readv_writev+0x47a/0x750 fs/read_write.c:726
do_iter_write+0x188/0x710 fs/read_write.c:852
vfs_iter_write+0x70/0xa0 fs/read_write.c:893
iter_file_splice_write+0x723/0xc70 fs/splice.c:689
do_splice_from fs/splice.c:767 [inline]
direct_splice_actor+0x110/0x180 fs/splice.c:936
splice_direct_to_actor+0x34b/0x8c0 fs/splice.c:891
do_splice_direct+0x1b3/0x280 fs/splice.c:979
do_sendfile+0xaf2/0x1250 fs/read_write.c:1246
__do_sys_sendfile64 fs/read_write.c:1311 [inline]
__se_sys_sendfile64 fs/read_write.c:1297 [inline]
__x64_sys_sendfile64+0x1cc/0x210 fs/read_write.c:1297
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7ff14e689059
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:00007ff14f7f9168 EFLAGS: 00000246 ORIG_RAX: 0000000000000028
RAX: ffffffffffffffda RBX: 00007ff14e79bf60 RCX: 00007ff14e689059
RDX: 0000000000000000 RSI: 0000000000000003 RDI: 0000000000000004
RBP: 00007ff14e6e308d R08: 0000000000000000 R09: 0000000000000000
R10: 000000000000f6c1 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffc6da5bc4f R14: 00007ff14f7f9300 R15: 0000000000022000
</TASK>

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