usb usb9: usbfs: process 19472 (syz-executor.1) did not claim interface 0 before use usb usb9: usbfs: process 19477 (syz-executor.1) did not claim interface 0 before use ================================================================== BUG: KASAN: slab-out-of-bounds in memcpy include/linux/string.h:377 [inline] BUG: KASAN: slab-out-of-bounds in usb_hcd_poll_rh_status+0x387/0x6f0 drivers/usb/core/hcd.c:771 Write of size 2 at addr ffff8880ab656580 by task syz-executor.5/19473 CPU: 1 PID: 19473 Comm: syz-executor.5 Not tainted 4.19.188-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+0x1fc/0x2ef lib/dump_stack.c:118 print_address_description.cold+0x54/0x219 mm/kasan/report.c:256 kasan_report_error.cold+0x8a/0x1b9 mm/kasan/report.c:354 kasan_report+0x8f/0xa0 mm/kasan/report.c:412 memcpy+0x35/0x50 mm/kasan/kasan.c:303 memcpy include/linux/string.h:377 [inline] usb_hcd_poll_rh_status+0x387/0x6f0 drivers/usb/core/hcd.c:771 call_timer_fn+0x177/0x700 kernel/time/timer.c:1338 expire_timers+0x243/0x4e0 kernel/time/timer.c:1375 __run_timers kernel/time/timer.c:1696 [inline] run_timer_softirq+0x21c/0x670 kernel/time/timer.c:1709 __do_softirq+0x265/0x980 kernel/softirq.c:292 invoke_softirq kernel/softirq.c:372 [inline] irq_exit+0x215/0x260 kernel/softirq.c:412 exiting_irq arch/x86/include/asm/apic.h:535 [inline] smp_apic_timer_interrupt+0x136/0x550 arch/x86/kernel/apic/apic.c:1098 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:894 RIP: 0010:clear_page_erms+0x7/0x10 arch/x86/lib/clear_page_64.S:48 Code: 48 89 47 18 48 89 47 20 48 89 47 28 48 89 47 30 48 89 47 38 48 8d 7f 40 75 d9 90 c3 0f 1f 80 00 00 00 00 b9 00 10 00 00 31 c0 aa c3 90 90 90 90 90 90 41 57 41 56 41 55 41 54 55 53 48 89 fb RSP: 0018:ffff88805e4e7260 EFLAGS: 00010246 ORIG_RAX: ffffffffffffff13 RAX: 0000000000000000 RBX: ffff888090c57778 RCX: 0000000000000240 RDX: 1ffff1101218aebf RSI: ffffea0001777240 RDI: ffff88805ddc9dc0 RBP: ffffea0001777240 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000001 R11: 0000000000000000 R12: ffffed101218aeef R13: ffff888090c563c0 R14: dffffc0000000000 R15: dffffc0000000000 clear_page arch/x86/include/asm/page_64.h:49 [inline] clear_highpage include/linux/highmem.h:190 [inline] prep_new_page mm/page_alloc.c:1949 [inline] get_page_from_freelist+0x1f22/0x4170 mm/page_alloc.c:3376 __alloc_pages_nodemask+0x387/0x2890 mm/page_alloc.c:4399 alloc_pages_current+0x193/0x2a0 mm/mempolicy.c:2197 alloc_pages include/linux/gfp.h:532 [inline] __vmalloc_area_node+0x47e/0x780 mm/vmalloc.c:1693 __vmalloc_node_range mm/vmalloc.c:1753 [inline] __vmalloc_node mm/vmalloc.c:1804 [inline] __vmalloc+0x160/0x220 mm/vmalloc.c:1810 _snd_pcm_lib_alloc_vmalloc_buffer+0x13c/0x200 sound/core/pcm_memory.c:411 snd_pcm_hw_params+0xea4/0x22d0 sound/core/pcm_native.c:711 snd_pcm_kernel_ioctl+0x1d4/0x3c0 sound/core/pcm_native.c:3015 snd_pcm_oss_change_params_locked+0x18b3/0x39d0 sound/core/oss/pcm_oss.c:965 snd_pcm_oss_change_params sound/core/oss/pcm_oss.c:1108 [inline] snd_pcm_oss_get_active_substream+0x164/0x1c0 sound/core/oss/pcm_oss.c:1125 snd_pcm_oss_get_formats+0x75/0x340 sound/core/oss/pcm_oss.c:1837 snd_pcm_oss_set_format sound/core/oss/pcm_oss.c:1878 [inline] snd_pcm_oss_ioctl+0x135a/0x3410 sound/core/oss/pcm_oss.c:2642 vfs_ioctl fs/ioctl.c:46 [inline] file_ioctl fs/ioctl.c:501 [inline] do_vfs_ioctl+0xcdb/0x12e0 fs/ioctl.c:688 ksys_ioctl+0x9b/0xc0 fs/ioctl.c:705 __do_sys_ioctl fs/ioctl.c:712 [inline] __se_sys_ioctl fs/ioctl.c:710 [inline] __x64_sys_ioctl+0x6f/0xb0 fs/ioctl.c:710 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x466459 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 bc ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fe67f053188 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 000000000056bf60 RCX: 0000000000466459 RDX: 0000000020000000 RSI: 00000000c0045005 RDI: 0000000000000007 RBP: 00000000004bf9fb R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000056bf60 R13: 00007ffeffc472ef R14: 00007fe67f053300 R15: 0000000000022000 Allocated by task 19477: __do_kmalloc mm/slab.c:3727 [inline] __kmalloc+0x15a/0x3c0 mm/slab.c:3736 kmalloc include/linux/slab.h:520 [inline] proc_do_submiturb+0x2d08/0x3af0 drivers/usb/core/devio.c:1668 proc_submiturb drivers/usb/core/devio.c:1822 [inline] usbdev_do_ioctl+0x773/0x3030 drivers/usb/core/devio.c:2476 usbdev_ioctl+0x21/0x30 drivers/usb/core/devio.c:2580 vfs_ioctl fs/ioctl.c:46 [inline] file_ioctl fs/ioctl.c:501 [inline] do_vfs_ioctl+0xcdb/0x12e0 fs/ioctl.c:688 ksys_ioctl+0x9b/0xc0 fs/ioctl.c:705 __do_sys_ioctl fs/ioctl.c:712 [inline] __se_sys_ioctl fs/ioctl.c:710 [inline] __x64_sys_ioctl+0x6f/0xb0 fs/ioctl.c:710 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe Freed by task 8071: __cache_free mm/slab.c:3503 [inline] kfree+0xcc/0x210 mm/slab.c:3822 security_sk_free+0x3e/0x70 security/security.c:1474 sk_prot_free net/core/sock.c:1499 [inline] __sk_destruct+0x51d/0x8a0 net/core/sock.c:1584 sk_destruct net/core/sock.c:1599 [inline] __sk_free+0x165/0x3b0 net/core/sock.c:1610 sk_free+0x3b/0x50 net/core/sock.c:1621 sock_put include/net/sock.h:1711 [inline] tcp_close+0xb23/0xfd0 net/ipv4/tcp.c:2506 inet_release+0xd7/0x1e0 net/ipv4/af_inet.c:427 __sock_release+0xcd/0x2a0 net/socket.c:579 sock_close+0x15/0x20 net/socket.c:1140 __fput+0x2ce/0x890 fs/file_table.c:278 task_work_run+0x148/0x1c0 kernel/task_work.c:113 tracehook_notify_resume include/linux/tracehook.h:193 [inline] exit_to_usermode_loop+0x251/0x2a0 arch/x86/entry/common.c:167 prepare_exit_to_usermode arch/x86/entry/common.c:198 [inline] syscall_return_slowpath arch/x86/entry/common.c:271 [inline] do_syscall_64+0x538/0x620 arch/x86/entry/common.c:296 entry_SYSCALL_64_after_hwframe+0x49/0xbe The buggy address belongs to the object at ffff8880ab656580 which belongs to the cache kmalloc-32 of size 32 The buggy address is located 0 bytes inside of 32-byte region [ffff8880ab656580, ffff8880ab6565a0) The buggy address belongs to the page: page:ffffea0002ad9580 count:1 mapcount:0 mapping:ffff88813bff01c0 index:0xffff8880ab656fc1 flags: 0xfff00000000100(slab) raw: 00fff00000000100 ffffea0002bcd1c8 ffffea000252ec48 ffff88813bff01c0 raw: ffff8880ab656fc1 ffff8880ab656000 0000000100000032 0000000000000000 page dumped because: kasan: bad access detected Memory state around the buggy address: ffff8880ab656480: 00 00 06 fc fc fc fc fc 05 fc fc fc fc fc fc fc ffff8880ab656500: 00 05 fc fc fc fc fc fc fb fb fb fb fc fc fc fc >ffff8880ab656580: 01 fc fc fc fc fc fc fc 00 07 fc fc fc fc fc fc ^ ffff8880ab656600: fb fb fb fb fc fc fc fc 00 00 00 00 fc fc fc fc ffff8880ab656680: fb fb fb fb fc fc fc fc fb fb fb fb fc fc fc fc ==================================================================