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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 ffff8881d0641c60 by task syz-executor.2/13010
CPU: 1 PID: 13010 Comm: syz-executor.2 Not tainted 5.8.0-rc1-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
__dump_stack lib/dump_stack.c:77 [inline]
dump_stack+0xf6/0x16e lib/dump_stack.c:118
print_address_description.constprop.0+0x1a/0x210 mm/kasan/report.c:383
__kasan_report mm/kasan/report.c:513 [inline]
kasan_report.cold+0x37/0x7c mm/kasan/report.c:530
snd_usb_mixer_notify_id+0x219/0x2a0 sound/usb/mixer.c:3240
snd_usb_mixer_interrupt+0x24f/0xbd0 sound/usb/mixer.c:3379
__usb_hcd_giveback_urb+0x32d/0x560 drivers/usb/core/hcd.c:1650
usb_hcd_giveback_urb+0x367/0x410 drivers/usb/core/hcd.c:1716
dummy_timer+0x11f2/0x3240 drivers/usb/gadget/udc/dummy_hcd.c:1967
call_timer_fn+0x1ac/0x6e0 kernel/time/timer.c:1404
expire_timers kernel/time/timer.c:1449 [inline]
__run_timers.part.0+0x54c/0x9e0 kernel/time/timer.c:1773
__run_timers kernel/time/timer.c:1745 [inline]
run_timer_softirq+0x80/0x120 kernel/time/timer.c:1786
__do_softirq+0x222/0x95b kernel/softirq.c:292
asm_call_on_stack+0xf/0x20 arch/x86/entry/entry_64.S:711
__run_on_irqstack arch/x86/include/asm/irq_stack.h:22 [inline]
run_on_irqstack_cond arch/x86/include/asm/irq_stack.h:48 [inline]
do_softirq_own_stack+0xed/0x140 arch/x86/kernel/irq_64.c:77
invoke_softirq kernel/softirq.c:387 [inline]
__irq_exit_rcu kernel/softirq.c:417 [inline]
irq_exit_rcu+0x150/0x1f0 kernel/softirq.c:429
sysvec_apic_timer_interrupt+0x115/0x1c0 arch/x86/kernel/apic/apic.c:1091
asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:596
RIP: 0010:arch_local_irq_restore arch/x86/include/asm/irqflags.h:85 [inline]
RIP: 0010:__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:160 [inline]
RIP: 0010:_raw_spin_unlock_irqrestore+0x3b/0x40 kernel/locking/spinlock.c:191
Code: e8 5a 7f 76 fb 48 89 ef e8 f2 6b 77 fb f6 c7 02 75 11 53 9d e8 46 0f 95 fb 65 ff 0d 6f 2a 52 7a 5b 5d c3 e8 27 15 95 fb 53 9d ed 0f 1f 00 55 48 89 fd 65 ff 05 55 2a 52 7a 45 31 c9 41 b8 01
RSP: 0018:ffff8881d0f0f8d0 EFLAGS: 00000246
RAX: 0000000000000000 RBX: 0000000000000246 RCX: 1ffffffff1014c62
RDX: 1ffff11038e89d87 RSI: 0000000000000000 RDI: ffff8881c744ec38
RBP: ffff8881c1bf9ec8 R08: 0000000000000000 R09: 0000000000000001
R10: fffffbfff12b4eda R11: 0000000000000000 R12: 0000000000000000
R13: dead000000000100 R14: dffffc0000000000 R15: 0000000000000000
mark_buffer_dirty+0x3e8/0x530 fs/buffer.c:1138
__block_commit_write.constprop.0.isra.0+0x1dc/0x300 fs/buffer.c:2085
block_write_end fs/buffer.c:2163 [inline]
generic_write_end+0xc9/0x3f0 fs/buffer.c:2177
ext4_da_write_end+0x211/0xb10 fs/ext4/inode.c:3092
generic_perform_write+0x2c0/0x4f0 mm/filemap.c:3310
ext4_buffered_write_iter+0x235/0x4a0 fs/ext4/file.c:270
ext4_file_write_iter+0x1ac/0x1890 fs/ext4/file.c:655
call_write_iter include/linux/fs.h:1907 [inline]
new_sync_write+0x422/0x650 fs/read_write.c:484
__vfs_write+0xc9/0x100 fs/read_write.c:497
vfs_write+0x268/0x5d0 fs/read_write.c:559
ksys_write+0x12d/0x250 fs/read_write.c:612
do_syscall_64+0x50/0x90 arch/x86/entry/common.c:359
entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x45cb19
Code: Bad RIP value.
RSP: 002b:00007fabd0f15c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 000000000050e400 RCX: 000000000045cb19
RDX: 00000000128e84bc RSI: 0000000020001200 RDI: 0000000000000007
RBP: 000000000078bf00 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff
R13: 0000000000000d38 R14: 00000000004cf922 R15: 00007fabd0f166d4
Allocated by task 322:
save_stack+0x1b/0x40 mm/kasan/common.c:48
set_track mm/kasan/common.c:56 [inline]
__kasan_kmalloc.constprop.0+0xc2/0xd0 mm/kasan/common.c:494
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+0x14d9/0x1fd0 sound/usb/mixer_quirks.c:2654
snd_usb_create_mixer+0x7d5/0x1950 sound/usb/mixer.c:3538
create_standard_mixer_quirk+0x57/0x70 sound/usb/quirks.c:508
snd_usb_create_quirk sound/usb/quirks.c:563 [inline]
create_composite_quirk+0x242/0x4b0 sound/usb/quirks.c:48
snd_usb_create_quirk+0x9f/0xd0 sound/usb/quirks.c:563
usb_audio_probe+0xa53/0x2290 sound/usb/card.c:674
usb_probe_interface+0x315/0x7f0 drivers/usb/core/driver.c:374
really_probe+0x291/0xc90 drivers/base/dd.c:525
driver_probe_device+0x26b/0x3d0 drivers/base/dd.c:701
__device_attach_driver+0x1d1/0x290 drivers/base/dd.c:807
bus_for_each_drv+0x15f/0x1e0 drivers/base/bus.c:431
__device_attach+0x28d/0x430 drivers/base/dd.c:873
bus_probe_device+0x1e4/0x290 drivers/base/bus.c:491
device_add+0xb09/0x1b40 drivers/base/core.c:2680
usb_set_configuration+0xf05/0x18a0 drivers/usb/core/message.c:2032
usb_generic_driver_probe+0xba/0xf2 drivers/usb/core/generic.c:241
usb_probe_device+0xd9/0x250 drivers/usb/core/driver.c:272
really_probe+0x291/0xc90 drivers/base/dd.c:525
driver_probe_device+0x26b/0x3d0 drivers/base/dd.c:701
__device_attach_driver+0x1d1/0x290 drivers/base/dd.c:807
bus_for_each_drv+0x15f/0x1e0 drivers/base/bus.c:431
__device_attach+0x28d/0x430 drivers/base/dd.c:873
bus_probe_device+0x1e4/0x290 drivers/base/bus.c:491
device_add+0xb09/0x1b40 drivers/base/core.c:2680
usb_new_device.cold+0x71d/0xfd4 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+0x2361/0x4390 drivers/usb/core/hub.c:5576
process_one_work+0x94c/0x15f0 kernel/workqueue.c:2269
worker_thread+0x64c/0x1120 kernel/workqueue.c:2415
kthread+0x392/0x470 kernel/kthread.c:291
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:293
Freed by task 12558:
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+0x116/0x160 mm/kasan/common.c:455
slab_free_hook mm/slub.c:1474 [inline]
slab_free_freelist_hook+0x53/0x140 mm/slub.c:1507
slab_free mm/slub.c:3072 [inline]
kfree+0xbc/0x2c0 mm/slub.c:4063
kobject_uevent_env+0x2a5/0x1540 lib/kobject_uevent.c:624
udc_bind_to_driver+0x458/0x580 drivers/usb/gadget/udc/core.c:1370
usb_gadget_probe_driver+0x31f/0x3f0 drivers/usb/gadget/udc/core.c:1423
raw_ioctl_run drivers/usb/gadget/legacy/raw_gadget.c:512 [inline]
raw_ioctl+0x17f4/0x2513 drivers/usb/gadget/legacy/raw_gadget.c:1210
vfs_ioctl fs/ioctl.c:48 [inline]
ksys_ioctl+0x11a/0x180 fs/ioctl.c:753
__do_sys_ioctl fs/ioctl.c:762 [inline]
__se_sys_ioctl fs/ioctl.c:760 [inline]
__x64_sys_ioctl+0x6f/0xb0 fs/ioctl.c:760
do_syscall_64+0x50/0x90 arch/x86/entry/common.c:359
entry_SYSCALL_64_after_hwframe+0x44/0xa9
The buggy address belongs to the object at ffff8881d0641c00
which belongs to the cache kmalloc-64 of size 64
The buggy address is located 32 bytes to the right of
64-byte region [ffff8881d0641c00, ffff8881d0641c40)
The buggy address belongs to the page:
page:ffffea0007419040 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0
flags: 0x200000000000200(slab)
raw: 0200000000000200 ffffea000750be80 0000000300000003 ffff8881da003180
raw: 0000000000000000 0000000000200020 00000001ffffffff 0000000000000000
page dumped because: kasan: bad access detected
Memory state around the buggy address:
ffff8881d0641b00: fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc
ffff8881d0641b80: fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc
>ffff8881d0641c00: 00 00 00 00 00 00 fc fc fc fc fc fc fc fc fc fc
^
ffff8881d0641c80: fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc
ffff8881d0641d00: fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc
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