================================================================== BUG: KASAN: slab-out-of-bounds in memcpy include/linux/fortify-string.h:225 [inline] BUG: KASAN: slab-out-of-bounds in usb_hcd_poll_rh_status+0x376/0x780 drivers/usb/core/hcd.c:774 Write of size 2 at addr ffff88804f81f1e0 by task ksoftirqd/1/19 CPU: 1 PID: 19 Comm: ksoftirqd/1 Not tainted 5.15.0-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0xcd/0x134 lib/dump_stack.c:106 print_address_description.constprop.0.cold+0x6c/0x30c mm/kasan/report.c:256 __kasan_report mm/kasan/report.c:442 [inline] kasan_report.cold+0x83/0xdf mm/kasan/report.c:459 check_region_inline mm/kasan/generic.c:183 [inline] kasan_check_range+0x13d/0x180 mm/kasan/generic.c:189 memcpy+0x39/0x60 mm/kasan/shadow.c:66 memcpy include/linux/fortify-string.h:225 [inline] usb_hcd_poll_rh_status+0x376/0x780 drivers/usb/core/hcd.c:774 call_timer_fn+0x1a5/0x6b0 kernel/time/timer.c:1421 expire_timers kernel/time/timer.c:1466 [inline] __run_timers.part.0+0x675/0xa20 kernel/time/timer.c:1734 __run_timers kernel/time/timer.c:1715 [inline] run_timer_softirq+0xb3/0x1d0 kernel/time/timer.c:1747 __do_softirq+0x29b/0x9c2 kernel/softirq.c:558 run_ksoftirqd kernel/softirq.c:920 [inline] run_ksoftirqd+0x2d/0x60 kernel/softirq.c:912 smpboot_thread_fn+0x645/0x9c0 kernel/smpboot.c:164 kthread+0x405/0x4f0 kernel/kthread.c:327 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295 Allocated by task 30433: kasan_save_stack+0x1e/0x50 mm/kasan/common.c:38 kasan_set_track mm/kasan/common.c:46 [inline] set_alloc_info mm/kasan/common.c:434 [inline] ____kasan_kmalloc mm/kasan/common.c:513 [inline] ____kasan_kmalloc mm/kasan/common.c:472 [inline] __kasan_kmalloc+0xa9/0xd0 mm/kasan/common.c:522 kmalloc include/linux/slab.h:595 [inline] proc_do_submiturb+0x2a7d/0x3630 drivers/usb/core/devio.c:1816 proc_submiturb drivers/usb/core/devio.c:1975 [inline] usbdev_do_ioctl drivers/usb/core/devio.c:2671 [inline] usbdev_ioctl+0x692/0x36c0 drivers/usb/core/devio.c:2791 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:874 [inline] __se_sys_ioctl fs/ioctl.c:860 [inline] __x64_sys_ioctl+0x193/0x200 fs/ioctl.c:860 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x44/0xae The buggy address belongs to the object at ffff88804f81f1e0 which belongs to the cache kmalloc-8 of size 8 The buggy address is located 0 bytes inside of 8-byte region [ffff88804f81f1e0, ffff88804f81f1e8) The buggy address belongs to the page: page:ffffea00013e07c0 refcount:1 mapcount:0 mapping:0000000000000000 index:0xffff88804f81f7a8 pfn:0x4f81f flags: 0xfff00000000200(slab|node=0|zone=1|lastcpupid=0x7ff) raw: 00fff00000000200 ffffea000072d780 dead000000000003 ffff888010c41280 raw: ffff88804f81f7a8 0000000080660061 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 15098, ts 246448948013, free_ts 246429622324 prep_new_page mm/page_alloc.c:2418 [inline] get_page_from_freelist+0xa72/0x2f50 mm/page_alloc.c:4149 __alloc_pages+0x1b2/0x500 mm/page_alloc.c:5369 alloc_pages+0x1a7/0x300 mm/mempolicy.c:2191 alloc_slab_page mm/slub.c:1793 [inline] allocate_slab mm/slub.c:1930 [inline] new_slab+0x32d/0x4a0 mm/slub.c:1993 ___slab_alloc+0x918/0xfe0 mm/slub.c:3022 __slab_alloc.constprop.0+0x4d/0xa0 mm/slub.c:3109 slab_alloc_node mm/slub.c:3200 [inline] __kmalloc_node+0x2cb/0x390 mm/slub.c:4467 kmalloc_node include/linux/slab.h:613 [inline] __vmalloc_area_node mm/vmalloc.c:2940 [inline] __vmalloc_node_range+0x473/0xab0 mm/vmalloc.c:3065 __vmalloc_node mm/vmalloc.c:3114 [inline] vzalloc+0x67/0x80 mm/vmalloc.c:3184 do_arpt_get_ctl+0x5f0/0x8f0 net/ipv4/netfilter/arp_tables.c:660 nf_getsockopt+0x72/0xd0 net/netfilter/nf_sockopt.c:116 ip_getsockopt net/ipv4/ip_sockglue.c:1786 [inline] ip_getsockopt+0x164/0x1c0 net/ipv4/ip_sockglue.c:1765 tcp_getsockopt+0x86/0xd0 net/ipv4/tcp.c:4231 __sys_getsockopt+0x21f/0x5f0 net/socket.c:2220 __do_sys_getsockopt net/socket.c:2235 [inline] __se_sys_getsockopt net/socket.c:2232 [inline] __x64_sys_getsockopt+0xba/0x150 net/socket.c:2232 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 page last free stack trace: reset_page_owner include/linux/page_owner.h:24 [inline] free_pages_prepare mm/page_alloc.c:1338 [inline] free_pcp_prepare+0x373/0x870 mm/page_alloc.c:1389 free_unref_page_prepare mm/page_alloc.c:3309 [inline] free_unref_page+0x19/0x690 mm/page_alloc.c:3388 mm_free_pgd kernel/fork.c:647 [inline] __mmdrop+0xcb/0x3f0 kernel/fork.c:698 mmdrop include/linux/sched/mm.h:49 [inline] __mmput+0x3f1/0x4b0 kernel/fork.c:1123 mmput+0x56/0x60 kernel/fork.c:1134 exit_mm kernel/exit.c:507 [inline] do_exit+0xb27/0x2b40 kernel/exit.c:819 do_group_exit+0x125/0x310 kernel/exit.c:929 get_signal+0x47d/0x21d0 kernel/signal.c:2820 arch_do_signal_or_restart+0x2a9/0x1c40 arch/x86/kernel/signal.c:868 handle_signal_work kernel/entry/common.c:148 [inline] exit_to_user_mode_loop kernel/entry/common.c:172 [inline] exit_to_user_mode_prepare+0x17d/0x290 kernel/entry/common.c:207 __syscall_exit_to_user_mode_work kernel/entry/common.c:289 [inline] syscall_exit_to_user_mode+0x19/0x60 kernel/entry/common.c:300 do_syscall_64+0x42/0xb0 arch/x86/entry/common.c:86 entry_SYSCALL_64_after_hwframe+0x44/0xae Memory state around the buggy address: ffff88804f81f080: fc fc fc fc 00 fc fc fc fc 00 fc fc fc fc 00 fc ffff88804f81f100: fc fc fc 00 fc fc fc fc 00 fc fc fc fc fb fc fc >ffff88804f81f180: fc fc 00 fc fc fc fc 00 fc fc fc fc 01 fc fc fc ^ ffff88804f81f200: fc 00 fc fc fc fc fb fc fc fc fc 00 fc fc fc fc ffff88804f81f280: fb fc fc fc fc fb fc fc fc fc 00 fc fc fc fc fb 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