device batadv0 entered promiscuous mode usb usb9: usbfs: process 18519 (syz-executor.1) did not claim interface 0 before use lo: Cannot use loopback or non-ethernet device as HSR slave. device batadv0 left promiscuous mode ================================================================== BUG: KASAN: slab-out-of-bounds in memcpy include/linux/string.h:376 [inline] BUG: KASAN: slab-out-of-bounds in usb_hcd_poll_rh_status+0x326/0x630 drivers/usb/core/hcd.c:782 Write of size 2 at addr ffff8880b3072c40 by task systemd-udevd/18522 CPU: 1 PID: 18522 Comm: systemd-udevd Not tainted 4.14.232-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:17 [inline] dump_stack+0x1b2/0x281 lib/dump_stack.c:58 print_address_description.cold+0x54/0x1d3 mm/kasan/report.c:252 kasan_report_error.cold+0x8a/0x191 mm/kasan/report.c:351 kasan_report+0x6f/0x80 mm/kasan/report.c:409 memcpy+0x35/0x50 mm/kasan/kasan.c:303 memcpy include/linux/string.h:376 [inline] usb_hcd_poll_rh_status+0x326/0x630 drivers/usb/core/hcd.c:782 call_timer_fn+0x14a/0x650 kernel/time/timer.c:1280 expire_timers+0x232/0x4d0 kernel/time/timer.c:1319 __run_timers kernel/time/timer.c:1637 [inline] run_timer_softirq+0x1d5/0x5a0 kernel/time/timer.c:1650 __do_softirq+0x24d/0x9ff kernel/softirq.c:288 invoke_softirq kernel/softirq.c:368 [inline] irq_exit+0x193/0x240 kernel/softirq.c:409 exiting_irq arch/x86/include/asm/apic.h:638 [inline] smp_apic_timer_interrupt+0x141/0x5e0 arch/x86/kernel/apic/apic.c:1106 apic_timer_interrupt+0x93/0xa0 arch/x86/entry/entry_64.S:793 RIP: 0010:arch_local_irq_restore arch/x86/include/asm/paravirt.h:779 [inline] RIP: 0010:kmem_cache_free+0x173/0x2b0 mm/slab.c:3759 RSP: 0018:ffff888222d5fd28 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff10 RAX: 0000000000000007 RBX: ffff888222dac280 RCX: 0000000000000000 RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000286 RBP: ffff88823f8bb200 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000286 R13: ffffffff818a2c7d R14: ffff888222dac280 R15: 0000000000000000 putname+0xcd/0x110 fs/namei.c:259 SYSC_renameat2 fs/namei.c:4663 [inline] SyS_renameat2+0x214/0xad0 fs/namei.c:4533 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x46/0xbb RIP: 0033:0x7f7ded26bd47 RSP: 002b:00007ffe9111b8b8 EFLAGS: 00000246 ORIG_RAX: 0000000000000052 RAX: ffffffffffffffda RBX: 0000555772c7a100 RCX: 00007f7ded26bd47 RDX: 0000000000000000 RSI: 00007ffe9111b8c0 RDI: 0000555772c7db40 RBP: 00007ffe9111b980 R08: 0000555772c6a840 R09: 0000555772c6a760 R10: 00007f7dee4708c0 R11: 0000000000000246 R12: 00007ffe9111b8c0 R13: 0000000000000001 R14: 000055577276d6cb R15: 0000000000000000 Allocated by task 18519: save_stack mm/kasan/kasan.c:447 [inline] set_track mm/kasan/kasan.c:459 [inline] kasan_kmalloc+0xeb/0x160 mm/kasan/kasan.c:551 __do_kmalloc mm/slab.c:3720 [inline] __kmalloc+0x15a/0x400 mm/slab.c:3729 kmalloc include/linux/slab.h:493 [inline] proc_do_submiturb+0x280f/0x3610 drivers/usb/core/devio.c:1684 proc_submiturb drivers/usb/core/devio.c:1841 [inline] usbdev_do_ioctl+0x665/0x2b70 drivers/usb/core/devio.c:2495 usbdev_ioctl+0x21/0x30 drivers/usb/core/devio.c:2599 vfs_ioctl fs/ioctl.c:46 [inline] file_ioctl fs/ioctl.c:500 [inline] do_vfs_ioctl+0x75a/0xff0 fs/ioctl.c:684 SYSC_ioctl fs/ioctl.c:701 [inline] SyS_ioctl+0x7f/0xb0 fs/ioctl.c:692 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x46/0xbb Freed by task 17598: save_stack mm/kasan/kasan.c:447 [inline] set_track mm/kasan/kasan.c:459 [inline] kasan_slab_free+0xc3/0x1a0 mm/kasan/kasan.c:524 __cache_free mm/slab.c:3496 [inline] kfree+0xc9/0x250 mm/slab.c:3815 kvfree+0x45/0x50 mm/util.c:416 __vunmap+0x20f/0x300 mm/vmalloc.c:1548 vfree+0x4b/0xd0 mm/vmalloc.c:1612 netlink_skb_destructor+0x17c/0x1c0 net/netlink/af_netlink.c:343 skb_release_head_state+0x11e/0x250 net/core/skbuff.c:625 skb_release_all net/core/skbuff.c:638 [inline] __kfree_skb net/core/skbuff.c:654 [inline] consume_skb+0xa7/0x380 net/core/skbuff.c:714 netlink_unicast_kernel net/netlink/af_netlink.c:1288 [inline] netlink_unicast+0x43f/0x610 net/netlink/af_netlink.c:1313 netlink_sendmsg+0x62e/0xb80 net/netlink/af_netlink.c:1878 sock_sendmsg_nosec net/socket.c:646 [inline] sock_sendmsg+0xb5/0x100 net/socket.c:656 sock_no_sendpage+0xe2/0x110 net/core/sock.c:2595 kernel_sendpage net/socket.c:3407 [inline] sock_sendpage+0xdf/0x140 net/socket.c:871 pipe_to_sendpage+0x226/0x2d0 fs/splice.c:451 splice_from_pipe_feed fs/splice.c:502 [inline] __splice_from_pipe+0x326/0x7a0 fs/splice.c:626 splice_from_pipe fs/splice.c:661 [inline] generic_splice_sendpage+0xc1/0x110 fs/splice.c:832 do_splice_from fs/splice.c:851 [inline] do_splice fs/splice.c:1147 [inline] SYSC_splice fs/splice.c:1402 [inline] SyS_splice+0xd59/0x1380 fs/splice.c:1382 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x46/0xbb The buggy address belongs to the object at ffff8880b3072c40 which belongs to the cache kmalloc-32 of size 32 The buggy address is located 0 bytes inside of 32-byte region [ffff8880b3072c40, ffff8880b3072c60) The buggy address belongs to the page: page:ffffea0002cc1c80 count:1 mapcount:0 mapping:ffff8880b3072000 index:0xffff8880b3072fc1 flags: 0xfff00000000100(slab) raw: 00fff00000000100 ffff8880b3072000 ffff8880b3072fc1 000000010000001f raw: ffffea0002a408a0 ffffea0002a7e060 ffff88813fe801c0 0000000000000000 page dumped because: kasan: bad access detected Memory state around the buggy address: ffff8880b3072b00: 00 01 fc fc fc fc fc fc fb fb fb fb fc fc fc fc ffff8880b3072b80: fb fb fb fb fc fc fc fc fb fb fb fb fc fc fc fc >ffff8880b3072c00: fb fb fb fb fc fc fc fc 01 fc fc fc fc fc fc fc ^ ffff8880b3072c80: fb fb fb fb fc fc fc fc fb fb fb fb fc fc fc fc ffff8880b3072d00: fb fb fb fb fc fc fc fc fb fb fb fb fc fc fc fc ==================================================================