usb 4-1: MIDIStreaming interface descriptor not found ================================================================== BUG: KASAN: slab-out-of-bounds in snd_usbmidi_get_ms_info+0xeaf/0x10e0 sound/usb/midi.c:1982 Read of size 1 at addr ffff88810c3f9ea2 by task kworker/0:4/7442 CPU: 0 PID: 7442 Comm: kworker/0:4 Not tainted 5.13.0-rc1-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Workqueue: usb_hub_wq hub_event Call Trace: __dump_stack lib/dump_stack.c:79 [inline] dump_stack+0x143/0x1db lib/dump_stack.c:120 print_address_description.constprop.0.cold+0x5b/0x2f8 mm/kasan/report.c:233 __kasan_report mm/kasan/report.c:419 [inline] kasan_report.cold+0x7c/0xd8 mm/kasan/report.c:436 snd_usbmidi_get_ms_info+0xeaf/0x10e0 sound/usb/midi.c:1982 __snd_usbmidi_create+0x393/0x1ba0 sound/usb/midi.c:2485 snd_usb_create_quirk+0xa5/0xe0 sound/usb/quirks.c:604 usb_audio_probe+0xcf0/0x2c90 sound/usb/card.c:796 usb_probe_interface+0x315/0x7f0 drivers/usb/core/driver.c:396 really_probe+0x291/0xf60 drivers/base/dd.c:576 driver_probe_device+0x298/0x410 drivers/base/dd.c:763 __device_attach_driver+0x203/0x2c0 drivers/base/dd.c:870 bus_for_each_drv+0x15f/0x1e0 drivers/base/bus.c:431 __device_attach+0x228/0x4b0 drivers/base/dd.c:938 bus_probe_device+0x1e4/0x290 drivers/base/bus.c:491 device_add+0xbe0/0x2100 drivers/base/core.c:3319 usb_set_configuration+0x113f/0x1910 drivers/usb/core/message.c:2164 usb_generic_driver_probe+0xba/0x100 drivers/usb/core/generic.c:238 usb_probe_device+0xd9/0x2c0 drivers/usb/core/driver.c:293 really_probe+0x291/0xf60 drivers/base/dd.c:576 driver_probe_device+0x298/0x410 drivers/base/dd.c:763 __device_attach_driver+0x203/0x2c0 drivers/base/dd.c:870 bus_for_each_drv+0x15f/0x1e0 drivers/base/bus.c:431 __device_attach+0x228/0x4b0 drivers/base/dd.c:938 bus_probe_device+0x1e4/0x290 drivers/base/bus.c:491 device_add+0xbe0/0x2100 drivers/base/core.c:3319 usb_new_device.cold+0x721/0x1058 drivers/usb/core/hub.c:2556 hub_port_connect drivers/usb/core/hub.c:5276 [inline] hub_port_connect_change drivers/usb/core/hub.c:5416 [inline] port_event drivers/usb/core/hub.c:5562 [inline] hub_event+0x2357/0x4330 drivers/usb/core/hub.c:5644 process_one_work+0x98d/0x1580 kernel/workqueue.c:2275 worker_thread+0x64c/0x1120 kernel/workqueue.c:2421 kthread+0x38c/0x460 kernel/kthread.c:313 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:294 Allocated by task 7442: kasan_save_stack+0x1b/0x40 mm/kasan/common.c:38 kasan_set_track mm/kasan/common.c:46 [inline] set_alloc_info mm/kasan/common.c:428 [inline] ____kasan_kmalloc mm/kasan/common.c:507 [inline] __kasan_kmalloc+0x7c/0x90 mm/kasan/common.c:516 kmalloc include/linux/slab.h:561 [inline] usb_get_configuration+0x321/0x3d60 drivers/usb/core/config.c:919 usb_enumerate_device drivers/usb/core/hub.c:2389 [inline] usb_new_device+0x42c/0x7a0 drivers/usb/core/hub.c:2525 hub_port_connect drivers/usb/core/hub.c:5276 [inline] hub_port_connect_change drivers/usb/core/hub.c:5416 [inline] port_event drivers/usb/core/hub.c:5562 [inline] hub_event+0x2357/0x4330 drivers/usb/core/hub.c:5644 process_one_work+0x98d/0x1580 kernel/workqueue.c:2275 worker_thread+0x64c/0x1120 kernel/workqueue.c:2421 kthread+0x38c/0x460 kernel/kthread.c:313 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:294 The buggy address belongs to the object at ffff88810c3f9e80 which belongs to the cache kmalloc-64 of size 64 The buggy address is located 34 bytes inside of 64-byte region [ffff88810c3f9e80, ffff88810c3f9ec0) The buggy address belongs to the page: page:ffffea000430fe40 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x10c3f9 flags: 0x200000000000200(slab|node=0|zone=2) raw: 0200000000000200 ffffea0004222100 0000000700000007 ffff888100041640 raw: 0000000000000000 0000000000200020 00000001ffffffff 0000000000000000 page dumped because: kasan: bad access detected page_owner tracks the page as allocated page last allocated via order 0, migratetype Unmovable, gfp_mask 0x12cc0(GFP_KERNEL|__GFP_NOWARN|__GFP_NORETRY), pid 130, ts 4790012468, free_ts 3440143016 prep_new_page mm/page_alloc.c:2358 [inline] get_page_from_freelist+0xc97/0x26a0 mm/page_alloc.c:3994 __alloc_pages+0x1b2/0x4f0 mm/page_alloc.c:5200 alloc_pages+0x18c/0x2a0 mm/mempolicy.c:2272 alloc_slab_page mm/slub.c:1644 [inline] allocate_slab+0x2c5/0x4c0 mm/slub.c:1784 new_slab mm/slub.c:1847 [inline] new_slab_objects mm/slub.c:2593 [inline] ___slab_alloc+0x476/0x7b0 mm/slub.c:2756 __slab_alloc+0x68/0x80 mm/slub.c:2796 slab_alloc_node mm/slub.c:2878 [inline] kmem_cache_alloc_node_trace+0x2a1/0x2e0 mm/slub.c:2962 kmalloc_node include/linux/slab.h:574 [inline] kzalloc_node include/linux/slab.h:697 [inline] __get_vm_area_node+0xd3/0x380 mm/vmalloc.c:2363 __vmalloc_node_range+0x135/0x970 mm/vmalloc.c:2906 alloc_thread_stack_node kernel/fork.c:245 [inline] dup_task_struct kernel/fork.c:869 [inline] copy_process+0x8de/0x6c80 kernel/fork.c:1947 kernel_clone+0xe7/0xa70 kernel/fork.c:2503 kernel_thread+0xb5/0xf0 kernel/fork.c:2555 call_usermodehelper_exec_work kernel/umh.c:174 [inline] call_usermodehelper_exec_work+0xcc/0x180 kernel/umh.c:160 process_one_work+0x98d/0x1580 kernel/workqueue.c:2275 worker_thread+0x64c/0x1120 kernel/workqueue.c:2421 kthread+0x38c/0x460 kernel/kthread.c:313 page last free stack trace: reset_page_owner include/linux/page_owner.h:24 [inline] free_pages_prepare mm/page_alloc.c:1298 [inline] free_pcp_prepare+0x216/0x390 mm/page_alloc.c:1342 free_unref_page_prepare mm/page_alloc.c:3250 [inline] free_unref_page_list+0x199/0x740 mm/page_alloc.c:3318 release_pages+0x4d5/0x1a00 mm/swap.c:972 tlb_batch_pages_flush mm/mmu_gather.c:49 [inline] tlb_flush_mmu_free mm/mmu_gather.c:242 [inline] tlb_flush_mmu mm/mmu_gather.c:249 [inline] tlb_finish_mmu+0x165/0x8c0 mm/mmu_gather.c:340 exit_mmap+0x2c2/0x590 mm/mmap.c:3210 __mmput kernel/fork.c:1096 [inline] mmput+0xce/0x3d0 kernel/fork.c:1117 free_bprm+0x65/0x2e0 fs/exec.c:1478 kernel_execve+0x380/0x460 fs/exec.c:1975 call_usermodehelper_exec_async+0x2e3/0x580 kernel/umh.c:112 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:294 Memory state around the buggy address: ffff88810c3f9d80: 00 00 00 00 00 00 00 00 fc fc fc fc fc fc fc fc ffff88810c3f9e00: 00 00 00 00 00 00 00 00 fc fc fc fc fc fc fc fc >ffff88810c3f9e80: 00 00 00 00 02 fc fc fc fc fc fc fc fc fc fc fc ^ ffff88810c3f9f00: 00 00 00 00 00 00 00 00 fc fc fc fc fc fc fc fc ffff88810c3f9f80: 00 00 00 00 00 00 00 00 fc fc fc fc fc fc fc fc ==================================================================