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divide error: 0000 [#1] PREEMPT SMP KASAN
CPU: 1 PID: 3149 Comm: syz-executor385 Not tainted 5.4.141-syzkaller-16412-gf364839bcf0b #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:snd_pcm_lib_ioctl_fifo_size sound/core/pcm_lib.c:1739 [inline]
RIP: 0010:snd_pcm_lib_ioctl+0x73e/0x75c sound/core/pcm_lib.c:1764
Code: fd 4c 89 e2 b8 ff ff 37 00 48 c1 ea 03 48 c1 e0 2a 80 3c 02 00 74 08 4c 89 e7 e8 f0 8e 14 fe 48 8b 83 18 02 00 00 89 ed 31 d2 <48> f7 f5 48 89 83 18 02 00 00 45 31 ed e8 7f b5 f2 fd 44 89 e8 5b
RSP: 0018:ffff8881da17fb78 EFLAGS: 00010246
RAX: 0000000000000000 RBX: ffff8881dce33800 RCX: ffff8881dd6a9980
RDX: 0000000000000000 RSI: ffffffff833e3709 RDI: 0000000100000000
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000007
R10: ffff8881dd6a9980 R11: ffffffff8134d1e8 R12: ffff8881dce33a18
R13: 0000000000000000 R14: 0000000000000001 R15: 0000000000000000
FS: 0000000002290300(0000) GS:ffff8881f6d00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020001090 CR3: 00000001d89ec000 CR4: 00000000001406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
snd_pcm_ops_ioctl+0x76/0xa0 sound/core/pcm_native.c:196
fixup_unreferenced_params+0x46b/0x547 sound/core/pcm_native.c:471
snd_pcm_hw_refine_old_user sound/core/pcm_native.c:3700 [inline]
snd_pcm_common_ioctl+0x1002/0x1764 sound/core/pcm_native.c:3036
snd_pcm_ioctl+0x93/0xa9 sound/core/pcm_native.c:3073
vfs_ioctl+0x76/0x9e fs/ioctl.c:47
do_vfs_ioctl+0xfc5/0x1022 fs/ioctl.c:722
ksys_ioctl+0x79/0xb1 fs/ioctl.c:737
__do_sys_ioctl fs/ioctl.c:744 [inline]
__se_sys_ioctl fs/ioctl.c:742 [inline]
__x64_sys_ioctl+0x7f/0x86 fs/ioctl.c:742
do_syscall_64+0x10b/0x144 arch/x86/entry/common.c:299
entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x443649
Code: 28 c3 e8 2a 14 00 00 66 2e 0f 1f 84 00 00 00 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 c0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffef556a688 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00000000004004a0 RCX: 0000000000443649
RDX: 00000000200010c0 RSI: 00000000c1004110 RDI: 0000000000000003
RBP: 00000000004031f0 R08: 0000000000000000 R09: 00000000004004a0
R10: 000000000000001f R11: 0000000000000246 R12: 0000000000403280
R13: 0000000000000000 R14: 00000000004b1018 R15: 00000000004004a0
Modules linked in:
---[ end trace 7398808905092392 ]---
RIP: 0010:snd_pcm_lib_ioctl_fifo_size sound/core/pcm_lib.c:1739 [inline]
RIP: 0010:snd_pcm_lib_ioctl+0x73e/0x75c sound/core/pcm_lib.c:1764
Code: fd 4c 89 e2 b8 ff ff 37 00 48 c1 ea 03 48 c1 e0 2a 80 3c 02 00 74 08 4c 89 e7 e8 f0 8e 14 fe 48 8b 83 18 02 00 00 89 ed 31 d2 <48> f7 f5 48 89 83 18 02 00 00 45 31 ed e8 7f b5 f2 fd 44 89 e8 5b
RSP: 0018:ffff8881da17fb78 EFLAGS: 00010246
RAX: 0000000000000000 RBX: ffff8881dce33800 RCX: ffff8881dd6a9980
RDX: 0000000000000000 RSI: ffffffff833e3709 RDI: 0000000100000000
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000007
R10: ffff8881dd6a9980 R11: ffffffff8134d1e8 R12: ffff8881dce33a18
R13: 0000000000000000 R14: 0000000000000001 R15: 0000000000000000
FS: 0000000002290300(0000) GS:ffff8881f6c00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007b48899bf000 CR3: 00000001d89ec000 CR4: 00000000001406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
0: fd std
1: 4c 89 e2 mov %r12,%rdx
4: b8 ff ff 37 00 mov $0x37ffff,%eax
9: 48 c1 ea 03 shr $0x3,%rdx
d: 48 c1 e0 2a shl $0x2a,%rax
11: 80 3c 02 00 cmpb $0x0,(%rdx,%rax,1)
15: 74 08 je 0x1f
17: 4c 89 e7 mov %r12,%rdi
1a: e8 f0 8e 14 fe call 0xfe148f0f
1f: 48 8b 83 18 02 00 00 mov 0x218(%rbx),%rax
26: 89 ed mov %ebp,%ebp
28: 31 d2 xor %edx,%edx
* 2a: 48 f7 f5 div %rbp <-- trapping instruction
2d: 48 89 83 18 02 00 00 mov %rax,0x218(%rbx)
34: 45 31 ed xor %r13d,%r13d
37: e8 7f b5 f2 fd call 0xfdf2b5bb
3c: 44 89 e8 mov %r13d,%eax
3f: 5b pop %rbx
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