cont=ffffffff8a1f4820
current_req=0000000000000000
command_status=-1
------------[ cut here ]------------
WARNING: CPU: 3 PID: 3113 at drivers/block/floppy.c:1000 schedule_bh+0x5f/0x70 drivers/block/floppy.c:1000
Modules linked in:
CPU: 3 PID: 3113 Comm: syslogd Not tainted 5.16.0-rc3-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: 07 1d fd fc 48 89 2d c0 62 ff 0b 5b 48 c7 c2 e0 60 6a 8c 48 8b 35 91 67 ff 0b bf 08 00 00 00 5d e9 f6 a2 d1 fc e8 e1 1c fd fc <0f> 0b eb d1 66 66 2e 0f 1f 84 00 00 00 00 00 66 90 e8 cb 1c fd fc
RSP: 0018:ffffc900005b8dd0 EFLAGS: 00010046
RAX: 0000000080010000 RBX: 0000000000000001 RCX: 0000000000000000
RDX: ffff8880180b8000 RSI: ffffffff847a8ddf RDI: 0000000000000003
RBP: ffffffff847ab2f0 R08: 0000000000000000 R09: ffffffff8c6a60e7
R10: ffffffff847a8daf R11: 0000000000000001 R12: 0000000000000001
R13: ffffffff847ab2f0 R14: 0000000000000000 R15: ffff888010c75000
FS: 00007f264ec89800(0000) GS:ffff88802cd00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00000000f452adb0 CR3: 000000001ffec000 CR4: 0000000000150ee0
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:__kernel_text_address+0x9/0x30 kernel/extable.c:78
Code: f6 07 8b 44 24 04 48 83 c4 08 5d c3 48 89 ef e8 cd 30 37 00 0f b6 c0 eb e0 0f 1f 84 00 00 00 00 00 53 48 89 fb e8 77 ff ff ff <85> c0 75 17 48 81 fb 00 90 cf 8e 72 0c 31 c0 48 81 fb 26 d0 e3 8e
RSP: 0018:ffffc90000d37548 EFLAGS: 00000282
RAX: 0000000000000001 RBX: ffffffff81be4c4e RCX: 0000000000000000
RDX: 1ffff920001a6eb7 RSI: 0000000000000001 RDI: ffffffff81be4c4e
RBP: ffffc90000d375b8 R08: ffffffff8e104fb8 R09: 0000000000000001
R10: fffff520001a6eb9 R11: 000000000008808a R12: ffffc90000d37628
R13: 0000000000000000 R14: ffff8880180b8000 R15: ffff88804b753000
unwind_get_return_address arch/x86/kernel/unwind_orc.c:318 [inline]
unwind_get_return_address+0x51/0x90 arch/x86/kernel/unwind_orc.c:313
arch_stack_walk+0x93/0xe0 arch/x86/kernel/stacktrace.c:26
stack_trace_save+0x8c/0xc0 kernel/stacktrace.c:122
kasan_save_stack+0x1e/0x50 mm/kasan/common.c:38
kasan_set_track+0x21/0x30 mm/kasan/common.c:46
kasan_set_free_info+0x20/0x30 mm/kasan/generic.c:370
____kasan_slab_free mm/kasan/common.c:366 [inline]
____kasan_slab_free mm/kasan/common.c:328 [inline]
__kasan_slab_free+0xff/0x130 mm/kasan/common.c:374
kasan_slab_free include/linux/kasan.h:235 [inline]
slab_free_hook mm/slub.c:1723 [inline]
slab_free_freelist_hook+0x8b/0x1c0 mm/slub.c:1749
slab_free mm/slub.c:3513 [inline]
kfree+0xf6/0x560 mm/slub.c:4561
skb_free_head net/core/skbuff.c:655 [inline]
skb_release_data+0x65a/0x790 net/core/skbuff.c:677
skb_release_all net/core/skbuff.c:742 [inline]
__kfree_skb net/core/skbuff.c:756 [inline]
consume_skb net/core/skbuff.c:912 [inline]
consume_skb+0xc2/0x160 net/core/skbuff.c:906
skb_free_datagram+0x1b/0x1f0 net/core/datagram.c:325
__unix_dgram_recvmsg+0x6f1/0xb80 net/unix/af_unix.c:2383
unix_dgram_recvmsg+0xca/0xf0 net/unix/af_unix.c:2401
sock_recvmsg_nosec net/socket.c:944 [inline]
sock_recvmsg net/socket.c:962 [inline]
sock_recvmsg net/socket.c:958 [inline]
sock_read_iter+0x33c/0x470 net/socket.c:1035
call_read_iter include/linux/fs.h:2156 [inline]
new_sync_read+0x5ba/0x6e0 fs/read_write.c:400
vfs_read+0x35c/0x600 fs/read_write.c:481
ksys_read+0x1ee/0x250 fs/read_write.c:619
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7f264ee158fe
Code: c0 e9 e6 fe ff ff 50 48 8d 3d 0e c7 09 00 e8 c9 cf 01 00 66 0f 1f 84 00 00 00 00 00 64 8b 04 25 18 00 00 00 85 c0 75 14 0f 05 <48> 3d 00 f0 ff ff 77 5a c3 66 0f 1f 84 00 00 00 00 00 48 83 ec 28
RSP: 002b:00007fff41606078 EFLAGS: 00000246 ORIG_RAX: 0000000000000000
RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f264ee158fe
RDX: 00000000000000ff RSI: 000055b8a48fb950 RDI: 0000000000000000
RBP: 000055b8a48fb910 R08: 00007f264eea5040 R09: 00007f264eea50c0
R10: 00007f264eea4fc0 R11: 0000000000000246 R12: 000055b8a48fb9a6
R13: 000055b8a48fb950 R14: 0000000000000000 R15: 0000000000000000
----------------
Code disassembly (best guess):
0: f6 07 8b testb $0x8b,(%rdi)
3: 44 24 04 rex.R and $0x4,%al
6: 48 83 c4 08 add $0x8,%rsp
a: 5d pop %rbp
b: c3 retq
c: 48 89 ef mov %rbp,%rdi
f: e8 cd 30 37 00 callq 0x3730e1
14: 0f b6 c0 movzbl %al,%eax
17: eb e0 jmp 0xfffffff9
19: 0f 1f 84 00 00 00 00 nopl 0x0(%rax,%rax,1)
20: 00
21: 53 push %rbx
22: 48 89 fb mov %rdi,%rbx
25: e8 77 ff ff ff callq 0xffffffa1
* 2a: 85 c0 test %eax,%eax <-- trapping instruction
2c: 75 17 jne 0x45
2e: 48 81 fb 00 90 cf 8e cmp $0xffffffff8ecf9000,%rbx
35: 72 0c jb 0x43
37: 31 c0 xor %eax,%eax
39: 48 81 fb 26 d0 e3 8e cmp $0xffffffff8ee3d026,%rbx