------------[ cut here ]------------ WARNING: CPU: 2 PID: 1813 at drivers/block/floppy.c:1000 schedule_bh+0x5f/0x70 drivers/block/floppy.c:1000 Modules linked in: CPU: 3 PID: 1813 Comm: syz-executor.2 Not tainted 5.16.0-syzkaller #0 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.14.0-2 04/01/2014 RIP: 0010:schedule_bh+0x5f/0x70 drivers/block/floppy.c:1000 Code: 17 9d fb fc 48 89 2d c0 1e 02 0c 5b 48 c7 c2 e0 46 6b 8c 48 8b 35 91 23 02 0c bf 08 00 00 00 5d e9 e6 ed cf fc e8 f1 9c fb fc <0f> 0b eb d1 66 66 2e 0f 1f 84 00 00 00 00 00 66 90 e8 db 9c fb fc RSP: 0018:ffffc900029e76e0 EFLAGS: 00010293 RAX: 0000000000000000 RBX: 0000000000000001 RCX: 0000000000000000 RDX: ffff888011665700 RSI: ffffffff847c2ddf RDI: 0000000000000003 RBP: ffffffff847d0c40 R08: 0000000000000000 R09: ffffffff8c6b46e7 R10: ffffffff847c2daf R11: 0000000000000000 R12: ffffffff847d0c40 R13: 0000000000000001 R14: 0000000000000000 R15: 0000000000000003 FS: 0000000000000000(0000) GS:ffff88802cd00000(0063) knlGS:00000000f594db40 CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 CR2: 00000000f70b1034 CR3: 00000000727fc000 CR4: 0000000000152ee0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: wait_til_done+0x7b/0x370 drivers/block/floppy.c:2019 floppy_check_events+0x3d0/0x510 drivers/block/floppy.c:4081 disk_check_events+0xc2/0x420 block/disk-events.c:193 disk_clear_events block/disk-events.c:248 [inline] bdev_check_media_change+0x12c/0x310 block/disk-events.c:279 floppy_open+0x75d/0xd70 drivers/block/floppy.c:4040 blkdev_get_whole+0x99/0x2d0 block/bdev.c:671 blkdev_get_by_dev.part.0+0x5c6/0xc70 block/bdev.c:818 blkdev_get_by_dev+0x6b/0x80 block/bdev.c:852 blkdev_open+0x154/0x2e0 block/fops.c:501 do_dentry_open+0x4b9/0x1240 fs/open.c:824 do_open fs/namei.c:3426 [inline] path_openat+0x1c9e/0x2940 fs/namei.c:3559 do_filp_open+0x1aa/0x400 fs/namei.c:3586 do_sys_openat2+0x16d/0x4d0 fs/open.c:1214 do_sys_open fs/open.c:1230 [inline] __do_compat_sys_openat fs/open.c:1290 [inline] __se_compat_sys_openat fs/open.c:1288 [inline] __ia32_compat_sys_openat+0x13f/0x1f0 fs/open.c:1288 do_syscall_32_irqs_on arch/x86/entry/common.c:112 [inline] __do_fast_syscall_32+0x65/0xf0 arch/x86/entry/common.c:178 do_fast_syscall_32+0x2f/0x70 arch/x86/entry/common.c:203 entry_SYSENTER_compat_after_hwframe+0x4d/0x5c RIP: 0023:0xf6f53549 Code: 03 74 c0 01 10 05 03 74 b8 01 10 06 03 74 b4 01 10 07 03 74 b0 01 10 08 03 74 d8 01 00 00 00 00 00 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 90 90 90 90 8d b4 26 00 00 00 00 8d b4 26 00 00 00 00 RSP: 002b:00000000f594d170 EFLAGS: 00000286 ORIG_RAX: 0000000000000127 RAX: ffffffffffffffda RBX: 00000000ffffff9c RCX: 00000000f594d1c0 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 00000000f708b000 RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 ---------------- Code disassembly (best guess): 0: 03 74 c0 01 add 0x1(%rax,%rax,8),%esi 4: 10 05 03 74 b8 01 adc %al,0x1b87403(%rip) # 0x1b8740d a: 10 06 adc %al,(%rsi) c: 03 74 b4 01 add 0x1(%rsp,%rsi,4),%esi 10: 10 07 adc %al,(%rdi) 12: 03 74 b0 01 add 0x1(%rax,%rsi,4),%esi 16: 10 08 adc %cl,(%rax) 18: 03 74 d8 01 add 0x1(%rax,%rbx,8),%esi 1c: 00 00 add %al,(%rax) 1e: 00 00 add %al,(%rax) 20: 00 51 52 add %dl,0x52(%rcx) 23: 55 push %rbp 24: 89 e5 mov %esp,%ebp 26: 0f 34 sysenter 28: cd 80 int $0x80 * 2a: 5d pop %rbp <-- trapping instruction 2b: 5a pop %rdx 2c: 59 pop %rcx 2d: c3 retq 2e: 90 nop 2f: 90 nop 30: 90 nop 31: 90 nop 32: 8d b4 26 00 00 00 00 lea 0x0(%rsi,%riz,1),%esi 39: 8d b4 26 00 00 00 00 lea 0x0(%rsi,%riz,1),%esi