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:00007f7ae730c0c8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00007f7ae679bf80 RCX: 00007f7ae667cae9 RDX: 0000000020000040 RSI: 00000000200000c0 RDI: 0000000020000000 RBP: 00007f7ae730c120 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002 R13: 0000000000000006 R14: 00007f7ae679bf80 R15: 00007fffe25625c8 ------------[ cut here ]------------ WARNING: CPU: 0 PID: 2344 at block/blk-mq.c:1258 blk_mq_start_request+0x35e/0x570 block/blk-mq.c:1270 Modules linked in: CPU: 0 PID: 2344 Comm: syz-executor.0 Not tainted 6.6.0-rc2-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/09/2023 RIP: 0010:blk_mq_start_request+0x35e/0x570 block/blk-mq.c:1258 Code: 83 c4 34 4c 89 e0 48 c1 e8 03 42 0f b6 04 28 84 c0 0f 85 27 01 00 00 41 89 1c 24 48 83 c4 08 5b 41 5c 41 5d 41 5e 41 5f 5d c3 <0f> 0b e9 25 fe ff ff 0f 0b e9 e3 fc ff ff 0f 0b e9 0e fd ff ff 89 RSP: 0018:ffffc900035ef2f8 EFLAGS: 00010202 RAX: 0000000000000000 RBX: 1ffff11021d5d9a2 RCX: 0000000000000018 RDX: 0000002700000000 RSI: ffff88810eaecc80 RDI: ffff88810c6e9c58 RBP: ffff88810eaecd14 R08: ffffffff88bfe0a7 R09: 1ffffffff117fc14 R10: dffffc0000000000 R11: fffffbfff117fc15 R12: ffff88810eaecc80 R13: dffffc0000000000 R14: ffff88810eaecda0 R15: 0000000000000000 FS: 00007f7ae730c6c0(0000) GS:ffff8881f6a00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f7ae730bff8 CR3: 0000000172ee5000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: null_queue_rq+0x2ca/0x5a0 drivers/block/null_blk/main.c:1727 __blk_mq_issue_directly block/blk-mq.c:2578 [inline] blk_mq_request_issue_directly+0x2f7/0x560 block/blk-mq.c:2663 blk_mq_plug_issue_direct+0x272/0x580 block/blk-mq.c:2684 blk_mq_flush_plug_list+0x1313/0x1580 block/blk-mq.c:2793 __blk_flush_plug+0x3f4/0x470 block/blk-core.c:1142 blk_finish_plug+0x4c/0x70 block/blk-core.c:1166 read_pages+0x514/0x640 mm/readahead.c:183 page_cache_ra_unbounded+0x541/0x650 mm/readahead.c:269 page_cache_sync_readahead include/linux/pagemap.h:1293 [inline] cramfs_blkdev_read fs/cramfs/inode.c:218 [inline] cramfs_read+0x361/0x790 fs/cramfs/inode.c:278 cramfs_read_super+0xb0/0x9b0 fs/cramfs/inode.c:522 cramfs_blkdev_fill_super+0x114/0x220 fs/cramfs/inode.c:622 get_tree_bdev+0x3b4/0x5b0 fs/super.c:1577 vfs_get_tree+0x7f/0x230 fs/super.c:1750 do_new_mount+0x1e5/0x940 fs/namespace.c:3335 do_mount fs/namespace.c:3675 [inline] __do_sys_mount fs/namespace.c:3884 [inline] __se_sys_mount+0x232/0x2c0 fs/namespace.c:3861 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7f7ae667cae9 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:00007f7ae730c0c8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00007f7ae679bf80 RCX: 00007f7ae667cae9 RDX: 0000000020000040 RSI: 00000000200000c0 RDI: 0000000020000000 RBP: 00007f7ae730c120 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002 R13: 0000000000000006 R14: 00007f7ae679bf80 R15: 00007fffe25625c8 ---------------- Code disassembly (best guess): 0: 28 00 sub %al,(%rax) 2: 00 00 add %al,(%rax) 4: 75 05 jne 0xb 6: 48 83 c4 28 add $0x28,%rsp a: c3 ret b: e8 e1 20 00 00 call 0x20f1 10: 90 nop 11: 48 89 f8 mov %rdi,%rax 14: 48 89 f7 mov %rsi,%rdi 17: 48 89 d6 mov %rdx,%rsi 1a: 48 89 ca mov %rcx,%rdx 1d: 4d 89 c2 mov %r8,%r10 20: 4d 89 c8 mov %r9,%r8 23: 4c 8b 4c 24 08 mov 0x8(%rsp),%r9 28: 0f 05 syscall * 2a: 48 3d 01 f0 ff ff cmp $0xfffffffffffff001,%rax <-- trapping instruction 30: 73 01 jae 0x33 32: c3 ret 33: 48 c7 c1 b0 ff ff ff mov $0xffffffffffffffb0,%rcx 3a: f7 d8 neg %eax 3c: 64 89 01 mov %eax,%fs:(%rcx) 3f: 48 rex.W