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WARNING: CPU: 2 PID: 0 at drivers/block/floppy.c:1000 schedule_bh+0x5f/0x70 drivers/block/floppy.c:1000
Modules linked in:
CPU: 2 PID: 0 Comm: swapper/2 Not tainted 5.16.0-rc1-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: d7 08 ef fc 48 89 2d 50 f0 f2 0b 5b 48 c7 c2 40 95 6a 8c 48 8b 35 21 f5 f2 0b bf 08 00 00 00 5d e9 b6 8b c3 fc e8 b1 08 ef fc <0f> 0b eb d1 66 66 2e 0f 1f 84 00 00 00 00 00 66 90 e8 9b 08 ef fc
RSP: 0018:ffffc90000780dd0 EFLAGS: 00010046
RAX: 0000000000010001 RBX: 0000000000000001 RCX: 0000000000000000
RDX: ffff88801193e1c0 RSI: ffffffff848818af RDI: 0000000000000003
RBP: ffffffff84883dc0 R08: 0000000000000000 R09: ffffffff8c6a9547
R10: ffffffff8488187f R11: 0000000000000001 R12: 0000000000000001
R13: ffffffff84883dc0 R14: 0000000000000000 R15: ffff888010de5000
FS: 0000000000000000(0000) GS:ffff88802cc00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007feb693efce8 CR3: 000000004bcf4000 CR4: 0000000000152ee0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
floppy_interrupt+0x228/0x340 drivers/block/floppy.c:1766
floppy_hardint+0x1a7/0x200 arch/x86/include/asm/floppy.h:66
__handle_irq_event_percpu+0x303/0x8f0 kernel/irq/handle.c:158
handle_irq_event_percpu kernel/irq/handle.c:198 [inline]
handle_irq_event+0x102/0x280 kernel/irq/handle.c:215
handle_edge_irq+0x25f/0xd00 kernel/irq/chip.c:822
generic_handle_irq_desc include/linux/irqdesc.h:158 [inline]
handle_irq arch/x86/kernel/irq.c:231 [inline]
__common_interrupt+0x9d/0x210 arch/x86/kernel/irq.c:250
common_interrupt+0xa4/0xc0 arch/x86/kernel/irq.c:240
asm_common_interrupt+0x1e/0x40 arch/x86/include/asm/idtentry.h:629
RIP: 0010:default_idle+0xb/0x10 arch/x86/kernel/process.c:734
Code: ff ff e8 e8 4e 68 f8 e9 24 fe ff ff e8 2e 29 fd ff cc cc cc cc cc cc cc cc cc cc cc cc cc cc eb 07 0f 00 2d 67 3a 51 00 fb f4 0f 1f 40 00 41 54 be 08 00 00 00 53 65 48 8b 1c 25 40 70 02 00
RSP: 0018:ffffc9000066fdf8 EFLAGS: 00000202
RAX: 0000000000533957 RBX: ffff88801193e1c0 RCX: ffffffff8952323f
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000
RBP: 0000000000000002 R08: 0000000000000001 R09: ffff88802cc3aad3
R10: ffffed100598755a R11: 0000000000000000 R12: ffffed1002327c38
R13: 0000000000000002 R14: ffffffff8d913710 R15: 0000000000000000
default_idle_call+0x87/0xd0 kernel/sched/idle.c:112
cpuidle_idle_call kernel/sched/idle.c:194 [inline]
do_idle+0x401/0x590 kernel/sched/idle.c:306
cpu_startup_entry+0x14/0x20 kernel/sched/idle.c:403
start_secondary+0x265/0x340 arch/x86/kernel/smpboot.c:272
secondary_startup_64_no_verify+0xb0/0xbb
----------------
Code disassembly (best guess), 2 bytes skipped:
0: e8 e8 4e 68 f8 callq 0xf8684eed
5: e9 24 fe ff ff jmpq 0xfffffe2e
a: e8 2e 29 fd ff callq 0xfffd293d
f: cc int3
10: cc int3
11: cc int3
12: cc int3
13: cc int3
14: cc int3
15: cc int3
16: cc int3
17: cc int3
18: cc int3
19: cc int3
1a: cc int3
1b: cc int3
1c: cc int3
1d: eb 07 jmp 0x26
1f: 0f 00 2d 67 3a 51 00 verw 0x513a67(%rip) # 0x513a8d
26: fb sti
27: f4 hlt
* 28: c3 retq <-- trapping instruction
29: 0f 1f 40 00 nopl 0x0(%rax)
2d: 41 54 push %r12
2f: be 08 00 00 00 mov $0x8,%esi
34: 53 push %rbx
35: 65 48 8b 1c 25 40 70 mov %gs:0x27040,%rbx
3c: 02 00