WARNING: CPU: 1 PID: 19411 at drivers/block/floppy.c:999 schedule_bh drivers/block/floppy.c:999 [inline] WARNING: CPU: 1 PID: 19411 at drivers/block/floppy.c:999 wait_til_done+0x3b1/0x420 drivers/block/floppy.c:2018 Modules linked in: CPU: 1 PID: 19411 Comm: syz-executor.0 Not tainted 6.5.0-syzkaller-11395-g7a1415eebeec #0 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014 RIP: 0010:schedule_bh drivers/block/floppy.c:999 [inline] RIP: 0010:wait_til_done+0x3b1/0x420 drivers/block/floppy.c:2018 Code: fc 41 83 fd 01 7e ac e8 4d 0b 4b fc 4c 89 e6 48 c7 c7 00 9d 8f 8d e8 5e f3 27 fc e8 39 0b 4b fc e9 68 fd ff ff e8 2f 0b 4b fc <0f> 0b e9 ef fc ff ff e8 83 ce a0 fc e9 b4 fd ff ff e8 19 0b 4b fc RSP: 0018:ffffc90028ab76f0 EFLAGS: 00010293 RAX: 0000000000000000 RBX: 1ffff92005156ede RCX: 0000000000000000 RDX: ffff888063fd4800 RSI: ffffffff853c9161 RDI: 0000000000000001 RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000001 R11: 00000000000007d7 R12: ffffffff853c5990 R13: 0000000000000000 R14: 0000000000000001 R15: 0000000000000000 FS: 0000000000000000(0000) GS:ffff88802c700000(0063) knlGS:00000000f7f60b40 CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 CR2: 0000000020000000 CR3: 000000005d650000 CR4: 0000000000350ee0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: floppy_check_events+0x3b9/0x6f0 drivers/block/floppy.c:4099 disk_check_events+0xbc/0x400 block/disk-events.c:193 disk_clear_events block/disk-events.c:248 [inline] disk_check_media_change+0x101/0x2b0 block/disk-events.c:279 floppy_open+0x8ef/0xe00 drivers/block/floppy.c:4058 blkdev_get_whole+0x93/0x2c0 block/bdev.c:640 blkdev_get_by_dev.part.0+0x211/0xb20 block/bdev.c:795 blkdev_get_by_dev+0x75/0x80 block/bdev.c:829 blkdev_open+0x112/0x380 block/fops.c:589 do_dentry_open+0x88b/0x1730 fs/open.c:929 do_open fs/namei.c:3639 [inline] path_openat+0x19af/0x29c0 fs/namei.c:3796 do_filp_open+0x1de/0x430 fs/namei.c:3823 do_sys_openat2+0x176/0x1e0 fs/open.c:1422 do_sys_open fs/open.c:1437 [inline] __do_compat_sys_openat fs/open.c:1497 [inline] __se_compat_sys_openat fs/open.c:1495 [inline] __ia32_compat_sys_openat+0x16e/0x200 fs/open.c:1495 do_syscall_32_irqs_on arch/x86/entry/common.c:112 [inline] __do_fast_syscall_32+0x61/0xe0 arch/x86/entry/common.c:178 do_fast_syscall_32+0x33/0x70 arch/x86/entry/common.c:203 entry_SYSENTER_compat_after_hwframe+0x70/0x82 RIP: 0023:0xf7fa7579 Code: 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 00 00 00 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:00000000f7f60150 EFLAGS: 00000293 ORIG_RAX: 0000000000000127 RAX: ffffffffffffffda RBX: 00000000ffffff9c RCX: 00000000f7f601a0 RDX: 0000000000004000 RSI: 0000000000000000 RDI: 00000000f7353ff4 RBP: 0000000000004000 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 ---------------- Code disassembly (best guess), 2 bytes skipped: 0: 10 06 adc %al,(%rsi) 2: 03 74 b4 01 add 0x1(%rsp,%rsi,4),%esi 6: 10 07 adc %al,(%rdi) 8: 03 74 b0 01 add 0x1(%rax,%rsi,4),%esi c: 10 08 adc %cl,(%rax) e: 03 74 d8 01 add 0x1(%rax,%rbx,8),%esi 1e: 00 51 52 add %dl,0x52(%rcx) 21: 55 push %rbp 22: 89 e5 mov %esp,%ebp 24: 0f 34 sysenter 26: cd 80 int $0x80 * 28: 5d pop %rbp <-- trapping instruction 29: 5a pop %rdx 2a: 59 pop %rcx 2b: c3 ret 2c: 90 nop 2d: 90 nop 2e: 90 nop 2f: 90 nop 30: 8d b4 26 00 00 00 00 lea 0x0(%rsi,%riz,1),%esi 37: 8d b4 26 00 00 00 00 lea 0x0(%rsi,%riz,1),%esi