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BUG: KASAN: slab-out-of-bounds in snd_usb_mixer_notify_id+0x219/0x2a0 sound/usb/mixer.c:3240
Write of size 4 at addr ffff8880a8014460 by task systemd-udevd/17855

CPU: 0 PID: 17855 Comm: systemd-udevd Not tainted 5.7.0-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 <IRQ>
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x188/0x20d lib/dump_stack.c:118
 print_address_description.constprop.0.cold+0xd3/0x413 mm/kasan/report.c:383
 __kasan_report mm/kasan/report.c:513 [inline]
 kasan_report.cold+0x1f/0x37 mm/kasan/report.c:530
 snd_usb_mixer_notify_id+0x219/0x2a0 sound/usb/mixer.c:3240
 snd_usb_mixer_interrupt+0x416/0x980 sound/usb/mixer.c:3379
 __usb_hcd_giveback_urb+0x2af/0x4b0 drivers/usb/core/hcd.c:1650
 usb_hcd_giveback_urb+0x368/0x420 drivers/usb/core/hcd.c:1716
 __skb_queue_head_init include/linux/skbuff.h:1854 [inline]
 skbpoolfree drivers/block/aoe/aoedev.c:435 [inline]
 freedev drivers/block/aoe/aoedev.c:290 [inline]
 dummy_timer+0x1243/0x2fe1 drivers/block/aoe/aoedev.c:366
 call_timer_fn+0x1ac/0x780 kernel/time/timer.c:1404
 expire_timers kernel/time/timer.c:1449 [inline]
 __run_timers kernel/time/timer.c:1773 [inline]
 __run_timers kernel/time/timer.c:1740 [inline]
 run_timer_softirq+0x623/0x1600 kernel/time/timer.c:1786
 __do_softirq+0x26c/0x9f7 kernel/softirq.c:292
 invoke_softirq kernel/softirq.c:373 [inline]
 irq_exit+0x192/0x1d0 kernel/softirq.c:413
 exiting_irq arch/x86/include/asm/apic.h:546 [inline]
 smp_apic_timer_interrupt+0x19e/0x600 arch/x86/kernel/apic/apic.c:1107
 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:829
 </IRQ>
RIP: 0010:arch_local_irq_restore arch/x86/include/asm/paravirt.h:765 [inline]
RIP: 0010:qlink_free mm/kasan/quarantine.c:151 [inline]
RIP: 0010:qlist_free_all+0xfc/0x140 mm/kasan/quarantine.c:167
Code: 50 08 48 8d 4a ff 83 e2 01 48 0f 45 c1 4c 8b 70 18 e9 40 ff ff ff e8 53 68 c6 ff 48 83 3d 5b c6 e1 07 00 74 36 4c 89 ff 57 9d <0f> 1f 44 00 00 4d 85 e4 75 9e 49 c7 45 08 00 00 00 00 49 c7 45 00
RSP: 0018:ffffc90008887c30 EFLAGS: 00000282 ORIG_RAX: ffffffffffffff13
RAX: 0000000000000000 RBX: ffff8880a4637280 RCX: 1ffffffff15173ba
RDX: 1ffff1101289a570 RSI: 0000000000000000 RDI: 0000000000000282
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000001
R10: 0000000000000000 R11: 0000000000000000 R12: ffff88809416abd0
R13: ffffc90008887c68 R14: ffff8880aa000380 R15: 0000000000000282
 quarantine_reduce+0x135/0x170 mm/kasan/quarantine.c:260
 __kasan_kmalloc.constprop.0+0x97/0xd0 mm/kasan/common.c:475
 slab_post_alloc_hook mm/slab.h:586 [inline]
 slab_alloc mm/slab.c:3320 [inline]
 kmem_cache_alloc+0x11b/0x740 mm/slab.c:3484
 getname_flags fs/namei.c:138 [inline]
 getname_flags+0xd2/0x5b0 fs/namei.c:128
 do_sys_openat2+0x3fc/0x7d0 fs/open.c:1173
 do_sys_open+0xc3/0x140 fs/open.c:1195
 do_syscall_64+0xf6/0x7d0 arch/x86/entry/common.c:295
 entry_SYSCALL_64_after_hwframe+0x49/0xb3
RIP: 0033:0x7f6bea9566f0
Code: 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 83 3d 19 30 2c 00 00 75 10 b8 02 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 31 c3 48 83 ec 08 e8 fe 9d 01 00 48 89 04 24
RSP: 002b:00007ffe7ab596a8 EFLAGS: 00000246 ORIG_RAX: 0000000000000002
RAX: ffffffffffffffda RBX: 0000555b3fa91c80 RCX: 00007f6bea9566f0
RDX: 00000000000001b6 RSI: 0000000000080000 RDI: 00007ffe7ab59850
RBP: 0000000000000008 R08: 0000000000000008 R09: 0000000000000001
R10: 0000000000080000 R11: 0000000000000246 R12: 0000555b3ea0c68a
R13: 0000000000000001 R14: 0000555b3fa98993 R15: 00007ffe7ab598b0

Allocated by task 3823:
 save_stack+0x1b/0x40 mm/kasan/common.c:48
 set_track mm/kasan/common.c:56 [inline]
 __kasan_kmalloc mm/kasan/common.c:494 [inline]
 __kasan_kmalloc.constprop.0+0xbf/0xd0 mm/kasan/common.c:467
 kmem_cache_alloc_trace+0x153/0x7d0 mm/slab.c:3551
 kmalloc include/linux/slab.h:555 [inline]
 kzalloc include/linux/slab.h:669 [inline]
 add_single_ctl_with_resume+0x53/0x1d0 sound/usb/mixer_quirks.c:147
 snd_mbox1_create_sync_switch sound/usb/mixer_quirks.c:719 [inline]
 snd_usb_mixer_apply_create_quirk+0x17ac/0x2000 sound/usb/mixer_quirks.c:2654
 snd_usb_create_mixer+0x7de/0x18c0 sound/usb/mixer.c:3538
 create_standard_mixer_quirk+0x57/0x70 sound/usb/quirks.c:508
 snd_usb_create_quirk+0x9f/0xd0 sound/usb/quirks.c:563
 create_composite_quirk+0x1d5/0x420 sound/usb/quirks.c:48
 snd_usb_create_quirk+0x9f/0xd0 sound/usb/quirks.c:563
 usb_audio_probe+0x57a/0x2240 sound/usb/card.c:668
 usb_probe_interface+0x305/0x7a0 drivers/usb/core/driver.c:374
 really_probe+0x281/0x6d0 drivers/base/dd.c:520
 driver_probe_device+0x104/0x210 drivers/base/dd.c:697
 __device_attach_driver+0x1c2/0x220 drivers/base/dd.c:804
 bus_for_each_drv+0x162/0x1e0 drivers/base/bus.c:431
 __device_attach+0x21a/0x360 drivers/base/dd.c:870
 bus_probe_device+0x1e4/0x290 drivers/base/bus.c:491
 device_add+0x132d/0x1c10 drivers/base/core.c:2557
 usb_set_configuration+0xec5/0x1740 drivers/usb/core/message.c:2032
 usb_generic_driver_probe+0x9d/0xe0 drivers/usb/core/generic.c:241
 usb_probe_device+0xc6/0x1f0 drivers/usb/core/driver.c:272
 really_probe+0x281/0x6d0 drivers/base/dd.c:520
 driver_probe_device+0x104/0x210 drivers/base/dd.c:697
 __device_attach_driver+0x1c2/0x220 drivers/base/dd.c:804
 bus_for_each_drv+0x162/0x1e0 drivers/base/bus.c:431
 __device_attach+0x21a/0x360 drivers/base/dd.c:870
 bus_probe_device+0x1e4/0x290 drivers/base/bus.c:491
 device_add+0x132d/0x1c10 drivers/base/core.c:2557
 usb_new_device.cold+0x753/0x103d drivers/usb/core/hub.c:2554
 hub_port_connect drivers/usb/core/hub.c:5208 [inline]
 hub_port_connect_change drivers/usb/core/hub.c:5348 [inline]
 port_event drivers/usb/core/hub.c:5494 [inline]
 hub_event+0x1eca/0x38f0 drivers/usb/core/hub.c:5576
 process_one_work+0x965/0x16a0 kernel/workqueue.c:2268
 worker_thread+0x96/0xe20 kernel/workqueue.c:2414
 kthread+0x388/0x470 kernel/kthread.c:268
 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:351

Freed by task 17564:
 save_stack+0x1b/0x40 mm/kasan/common.c:48
 set_track mm/kasan/common.c:56 [inline]
 kasan_set_free_info mm/kasan/common.c:316 [inline]
 __kasan_slab_free+0xf7/0x140 mm/kasan/common.c:455
 __cache_free mm/slab.c:3426 [inline]
 kfree+0x109/0x2b0 mm/slab.c:3757
 tomoyo_path_number_perm+0x411/0x4d0 security/tomoyo/file.c:736
 security_path_chmod+0x100/0x160 security/security.c:1151
 chmod_common+0x156/0x3e0 fs/open.c:588
 ksys_fchmod+0xc4/0x130 fs/open.c:612
 __do_sys_fchmod fs/open.c:620 [inline]
 __se_sys_fchmod fs/open.c:618 [inline]
 __x64_sys_fchmod+0x53/0x80 fs/open.c:618
 do_syscall_64+0xf6/0x7d0 arch/x86/entry/common.c:295
 entry_SYSCALL_64_after_hwframe+0x49/0xb3

The buggy address belongs to the object at ffff8880a8014400
 which belongs to the cache kmalloc-64 of size 64
The buggy address is located 32 bytes to the right of
 64-byte region [ffff8880a8014400, ffff8880a8014440)
The buggy address belongs to the page:
page:ffffea0002a00500 refcount:1 mapcount:0 mapping:0000000000000000 index:0xffff8880a8014100
flags: 0xfffe0000000200(slab)
raw: 00fffe0000000200 ffffea00029f4208 ffffea0002458648 ffff8880aa000380
raw: ffff8880a8014100 ffff8880a8014000 0000000100000018 0000000000000000
page dumped because: kasan: bad access detected

Memory state around the buggy address:
 ffff8880a8014300: fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc
 ffff8880a8014380: fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc
>ffff8880a8014400: 00 00 00 00 00 00 fc fc fc fc fc fc fc fc fc fc
                                                       ^
 ffff8880a8014480: fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc
 ffff8880a8014500: 00 00 00 00 00 00 00 00 fc fc fc fc fc fc fc fc
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