current_req=0000000000000000
command_status=-1
general protection fault, probably for non-canonical address 0xdffffc0000000002: 0000 [#1] PREEMPT SMP KASAN
KASAN: null-ptr-deref in range [0x0000000000000010-0x0000000000000017]
CPU: 3 PID: 15958 Comm: kworker/u16:12 Not tainted 6.6.0-rc3-syzkaller #0
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
Workqueue: floppy floppy_work_workfn
RIP: 0010:reset_interrupt+0x17a/0x230 drivers/block/floppy.c:1789
Code: 1c 10 2d fc e9 0e ff ff ff e8 02 ef 49 fc 48 8b 1d 0b b3 1a 0d 48 b8 00 00 00 00 00 fc ff df 48 8d 7b 10 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 80 00 00 00 48 8b 73 10 48 c7 c7 a0 38 13 8b e8
RSP: 0018:ffffc9000b04fce0 EFLAGS: 00010202
RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 0000000000000000
RDX: 0000000000000002 RSI: ffffffff853cd60e RDI: 0000000000000010
RBP: ffffffff8d8f4da0 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000001 R11: 5f746e6572727563 R12: ffff88801acd1400
R13: 0000000000000001 R14: ffffc9000b04fd80 R15: ffff888012c7d000
FS: 0000000000000000(0000) GS:ffff88806b900000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00005555565f18f8 CR3: 000000003029e000 CR4: 0000000000350ee0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
<TASK>
process_one_work+0x884/0x15c0 kernel/workqueue.c:2630
process_scheduled_works kernel/workqueue.c:2703 [inline]
worker_thread+0x8b9/0x1290 kernel/workqueue.c:2784
kthread+0x33c/0x440 kernel/kthread.c:388
ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:304
</TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:reset_interrupt+0x17a/0x230 drivers/block/floppy.c:1789
Code: 1c 10 2d fc e9 0e ff ff ff e8 02 ef 49 fc 48 8b 1d 0b b3 1a 0d 48 b8 00 00 00 00 00 fc ff df 48 8d 7b 10 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 80 00 00 00 48 8b 73 10 48 c7 c7 a0 38 13 8b e8
RSP: 0018:ffffc9000b04fce0 EFLAGS: 00010202
RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 0000000000000000
RDX: 0000000000000002 RSI: ffffffff853cd60e RDI: 0000000000000010
RBP: ffffffff8d8f4da0 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000001 R11: 5f746e6572727563 R12: ffff88801acd1400
R13: 0000000000000001 R14: ffffc9000b04fd80 R15: ffff888012c7d000
FS: 0000000000000000(0000) GS:ffff88806b800000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f063298ed58 CR3: 000000000c976000 CR4: 0000000000350ee0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess), 3 bytes skipped:
0: fc cld
1: e9 0e ff ff ff jmp 0xffffff14
6: e8 02 ef 49 fc call 0xfc49ef0d
b: 48 8b 1d 0b b3 1a 0d mov 0xd1ab30b(%rip),%rbx # 0xd1ab31d
12: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax
19: fc ff df
1c: 48 8d 7b 10 lea 0x10(%rbx),%rdi
20: 48 89 fa mov %rdi,%rdx
23: 48 c1 ea 03 shr $0x3,%rdx
* 27: 80 3c 02 00 cmpb $0x0,(%rdx,%rax,1) <-- trapping instruction
2b: 0f 85 80 00 00 00 jne 0xb1
31: 48 8b 73 10 mov 0x10(%rbx),%rsi
35: 48 c7 c7 a0 38 13 8b mov $0xffffffff8b1338a0,%rdi
3c: e8 .byte 0xe8