================================================================== 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 ffff88802b2f9550 by task syz-executor.4/15393 CPU: 1 PID: 15393 Comm: syz-executor.4 Not tainted 5.15.0-next-20211111-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+0x8d/0x320 mm/kasan/report.c:247 __kasan_report mm/kasan/report.c:433 [inline] kasan_report.cold+0x83/0xdf mm/kasan/report.c:450 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 invoke_softirq kernel/softirq.c:432 [inline] __irq_exit_rcu+0x123/0x180 kernel/softirq.c:636 irq_exit_rcu+0x5/0x20 kernel/softirq.c:648 sysvec_apic_timer_interrupt+0x93/0xc0 arch/x86/kernel/apic/apic.c:1097 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:638 RIP: 0010:__sanitizer_cov_trace_const_cmp1+0x77/0x80 kernel/kcov.c:275 Code: f0 72 27 41 0f b6 fb 41 0f b6 c9 48 83 c2 01 48 c7 44 30 e0 01 00 00 00 48 89 7c 30 e8 48 89 4c 30 f0 4c 89 54 d8 20 48 89 10 <5b> c3 0f 1f 80 00 00 00 00 53 41 89 fb 41 89 f1 bf 03 00 00 00 65 RSP: 0018:ffffc9000b5efbe0 EFLAGS: 00000246 RAX: 0000000000000000 RBX: ffff88801d12e100 RCX: ffff88803f191d40 RDX: 0000000000000000 RSI: ffff88803f191d40 RDI: 0000000000000003 RBP: dffffc0000000000 R08: 0000000000000000 R09: 0000000000000000 R10: ffffffff839e34eb R11: 0000000000000000 R12: ffffc9000b5efcb8 R13: ffff8880131c4990 R14: 0000000000000000 R15: 0000000000000002 tomoyo_check_acl+0xcb/0x450 security/tomoyo/domain.c:173 tomoyo_path_number_perm+0x32a/0x590 security/tomoyo/file.c:733 security_file_ioctl+0x50/0xb0 security/security.c:1541 __do_sys_ioctl fs/ioctl.c:868 [inline] __se_sys_ioctl fs/ioctl.c:860 [inline] __x64_sys_ioctl+0xb3/0x200 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 RIP: 0033:0x7f0443314ae9 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:00007f044088a188 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007f0443427f60 RCX: 00007f0443314ae9 RDX: 0000000020000080 RSI: 00000000000089f0 RDI: 0000000000000007 RBP: 00007f044336ef6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffcd0c95b4f R14: 00007f044088a300 R15: 0000000000022000 Allocated by task 15386: 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 ffff88802b2f9550 which belongs to the cache kmalloc-8 of size 8 The buggy address is located 0 bytes inside of 8-byte region [ffff88802b2f9550, ffff88802b2f9558) The buggy address belongs to the page: page:ffffea0000acbe40 refcount:1 mapcount:0 mapping:0000000000000000 index:0xffff88802b2f9e10 pfn:0x2b2f9 flags: 0xfff00000000200(slab|node=0|zone=1|lastcpupid=0x7ff) raw: 00fff00000000200 0000000000000000 dead000000000001 ffff888010c41280 raw: ffff88802b2f9e10 0000000080660065 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 0x112cc0(GFP_USER|__GFP_NOWARN|__GFP_NORETRY), pid 4651, ts 1185829937867, free_ts 1185829768917 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 xt_counters_alloc+0x4c/0x70 net/netfilter/x_tables.c:1379 __do_replace+0x9a/0x890 net/ipv6/netfilter/ip6_tables.c:1066 do_replace net/ipv6/netfilter/ip6_tables.c:1157 [inline] do_ip6t_set_ctl+0x90d/0xb90 net/ipv6/netfilter/ip6_tables.c:1639 nf_setsockopt+0x83/0xe0 net/netfilter/nf_sockopt.c:101 ipv6_setsockopt+0x122/0x180 net/ipv6/ipv6_sockglue.c:1017 tcp_setsockopt+0x136/0x2520 net/ipv4/tcp.c:3653 __sys_setsockopt+0x2db/0x610 net/socket.c:2176 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+0x374/0x870 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 __vunmap+0x781/0xb70 mm/vmalloc.c:2632 __vfree+0x3c/0xd0 mm/vmalloc.c:2680 vfree+0x5a/0x90 mm/vmalloc.c:2711 copy_entries_to_user net/ipv6/netfilter/ip6_tables.c:884 [inline] get_entries net/ipv6/netfilter/ip6_tables.c:1041 [inline] do_ip6t_get_ctl+0x82f/0xa10 net/ipv6/netfilter/ip6_tables.c:1672 nf_getsockopt+0x72/0xd0 net/netfilter/nf_sockopt.c:116 ipv6_getsockopt+0x1be/0x270 net/ipv6/ipv6_sockglue.c:1495 tcp_getsockopt+0x86/0xd0 net/ipv4/tcp.c:4249 __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 entry_SYSCALL_64_after_hwframe+0x44/0xae Memory state around the buggy address: ffff88802b2f9400: fc fc fa fc fc fc fc 00 fc fc fc fc fa fc fc fc ffff88802b2f9480: fc fa fc fc fc fc fa fc fc fc fc fb fc fc fc fc >ffff88802b2f9500: fa fc fc fc fc fb fc fc fc fc 01 fc fc fc fc fa ^ ffff88802b2f9580: fc fc fc fc fa fc fc fc fc fb fc fc fc fc fa fc ffff88802b2f9600: fc fc fc fa fc fc fc fc fa fc fc fc fc fa fc fc ================================================================== ---------------- Code disassembly (best guess): 0: f0 72 27 lock jb 0x2a 3: 41 0f b6 fb movzbl %r11b,%edi 7: 41 0f b6 c9 movzbl %r9b,%ecx b: 48 83 c2 01 add $0x1,%rdx f: 48 c7 44 30 e0 01 00 movq $0x1,-0x20(%rax,%rsi,1) 16: 00 00 18: 48 89 7c 30 e8 mov %rdi,-0x18(%rax,%rsi,1) 1d: 48 89 4c 30 f0 mov %rcx,-0x10(%rax,%rsi,1) 22: 4c 89 54 d8 20 mov %r10,0x20(%rax,%rbx,8) 27: 48 89 10 mov %rdx,(%rax) * 2a: 5b pop %rbx <-- trapping instruction 2b: c3 retq 2c: 0f 1f 80 00 00 00 00 nopl 0x0(%rax) 33: 53 push %rbx 34: 41 89 fb mov %edi,%r11d 37: 41 89 f1 mov %esi,%r9d 3a: bf 03 00 00 00 mov $0x3,%edi 3f: 65 gs