R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002
R13: 000000000000000b R14: 00007fafce99bf80 R15: 00007fff65f8c8a8
 </TASK>
------------[ cut here ]------------
WARNING: CPU: 2 PID: 6377 at block/blk-mq.c:1258 blk_mq_start_request+0x643/0x780 block/blk-mq.c:1258
Modules linked in:
CPU: 2 PID: 6377 Comm: syz-executor.1 Not tainted 6.6.0-syzkaller-10396-g4652b8e4f3ff #0
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
RIP: 0010:blk_mq_start_request+0x643/0x780 block/blk-mq.c:1258
Code: 00 00 fc ff df 48 8d 7d 10 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 2f 01 00 00 48 89 df ff 55 10 e9 64 fc ff ff e8 1d 9c 44 fd <0f> 0b e9 f6 fa ff ff e8 11 9c 44 fd 0f 0b e9 06 fa ff ff e8 05 9c
RSP: 0018:ffffc90004a6f298 EFLAGS: 00010246
RAX: 0000000000040000 RBX: ffff888017c52d00 RCX: ffffc9000644a000
RDX: 0000000000040000 RSI: ffffffff8442e043 RDI: 0000000000000005
RBP: ffff888017c52d94 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000000000001 R11: 1ffffffff19f6999 R12: ffff888106aa62c0
R13: 0000000000000001 R14: ffff888017c52e1d R15: ffff888017c52e20
FS:  00007fafcf69e6c0(0000) GS:ffff88806b800000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fb345578038 CR3: 0000000112da3000 CR4: 0000000000350ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 null_queue_rq+0x2e2/0x7a0 drivers/block/null_blk/main.c:1727
 __blk_mq_issue_directly+0xe3/0x270 block/blk-mq.c:2578
 blk_mq_request_issue_directly+0x120/0x190 block/blk-mq.c:2663
 blk_mq_plug_issue_direct+0x19e/0x670 block/blk-mq.c:2684
 blk_mq_flush_plug_list.part.0+0x16b6/0x1e90 block/blk-mq.c:2793
 blk_mq_flush_plug_list+0x62/0x80 block/blk-mq.c:2770
 __blk_flush_plug+0x2c0/0x430 block/blk-core.c:1142
 blk_finish_plug block/blk-core.c:1166 [inline]
 blk_finish_plug+0x54/0xa0 block/blk-core.c:1163
 read_pages+0x69b/0xdb0 mm/readahead.c:183
 page_cache_ra_unbounded+0x457/0x5e0 mm/readahead.c:269
 do_page_cache_ra mm/readahead.c:299 [inline]
 page_cache_ra_order+0x72b/0xa80 mm/readahead.c:546
 ondemand_readahead+0x493/0x1130 mm/readahead.c:668
 page_cache_sync_ra+0x174/0x1d0 mm/readahead.c:695
 page_cache_sync_readahead.constprop.0+0xb2/0xf0 include/linux/pagemap.h:1293
 cramfs_blkdev_read fs/cramfs/inode.c:218 [inline]
 cramfs_read+0x33f/0xae0 fs/cramfs/inode.c:278
 cramfs_read_super+0xbd/0x9b0 fs/cramfs/inode.c:522
 cramfs_blkdev_fill_super+0x116/0x2f0 fs/cramfs/inode.c:622
 get_tree_bdev+0x3b5/0x650 fs/super.c:1595
 cramfs_get_tree fs/cramfs/inode.c:958 [inline]
 cramfs_get_tree+0x40/0x50 fs/cramfs/inode.c:948
 vfs_get_tree+0x8c/0x370 fs/super.c:1768
 do_new_mount fs/namespace.c:3337 [inline]
 path_mount+0x1492/0x1ed0 fs/namespace.c:3664
 do_mount fs/namespace.c:3677 [inline]
 __do_sys_mount fs/namespace.c:3886 [inline]
 __se_sys_mount fs/namespace.c:3863 [inline]
 __x64_sys_mount+0x293/0x310 fs/namespace.c:3863
 do_syscall_x64 arch/x86/entry/common.c:51 [inline]
 do_syscall_64+0x3f/0x110 arch/x86/entry/common.c:82
 entry_SYSCALL_64_after_hwframe+0x63/0x6b
RIP: 0033:0x7fafce87cae9
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 00 00 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 73 01 c3 48 c7 c1 b0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fafcf69e0c8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007fafce99bf80 RCX: 00007fafce87cae9
RDX: 0000000020000040 RSI: 00000000200000c0 RDI: 0000000020000000
RBP: 00007fafcf69e120 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002
R13: 000000000000000b R14: 00007fafce99bf80 R15: 00007fff65f8c8a8
 </TASK>