================================================================== 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 ffff888012fd5230 by task syz-executor.0/24062 CPU: 1 PID: 24062 Comm: syz-executor.0 Not tainted 5.16.0-rc2-next-20211125-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+0xa5/0x3ed 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:637 irq_exit_rcu+0x5/0x20 kernel/softirq.c:649 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:preempt_count arch/x86/include/asm/preempt.h:27 [inline] RIP: 0010:check_kcov_mode kernel/kcov.c:166 [inline] RIP: 0010:__sanitizer_cov_trace_pc+0x0/0x60 kernel/kcov.c:200 Code: 48 89 ef 5d e9 01 ed 49 00 5d be 03 00 00 00 e9 06 e8 6a 02 66 0f 1f 44 00 00 48 8b be b0 01 00 00 e8 b4 ff ff ff 31 c0 c3 90 <65> 8b 05 19 8b 8a 7e 89 c1 48 8b 34 24 81 e1 00 01 00 00 65 48 8b RSP: 0018:ffffc90002b9f6c0 EFLAGS: 00000212 RAX: 0000000000011809 RBX: 0000000000000200 RCX: ffffc9000578a000 RDX: 0000000000040000 RSI: ffffffff81442300 RDI: 0000000000000003 RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000000001 R10: ffffffff814422f6 R11: 0000000000000000 R12: 0000000000000000 R13: 00000000fffffffc R14: ffff888093945880 R15: dffffc0000000000 account_kernel_stack.isra.0+0xa6/0x210 kernel/fork.c:387 release_task_stack kernel/fork.c:432 [inline] put_task_stack+0x12b/0x4e0 kernel/fork.c:444 finish_task_switch.isra.0+0x8ad/0xb80 kernel/sched/core.c:4895 context_switch kernel/sched/core.c:4986 [inline] __schedule+0xaba/0x4d90 kernel/sched/core.c:6293 preempt_schedule_common+0x45/0xc0 kernel/sched/core.c:6459 preempt_schedule_thunk+0x16/0x18 arch/x86/entry/thunk_64.S:35 __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:152 [inline] _raw_spin_unlock_irqrestore+0x57/0x70 kernel/locking/spinlock.c:194 spin_unlock_irqrestore include/linux/spinlock.h:409 [inline] rh_queue_status drivers/usb/core/hcd.c:832 [inline] rh_urb_enqueue drivers/usb/core/hcd.c:839 [inline] usb_hcd_submit_urb+0x15ed/0x22c0 drivers/usb/core/hcd.c:1544 usb_submit_urb+0x86d/0x18a0 drivers/usb/core/urb.c:594 proc_do_submiturb+0x169d/0x3630 drivers/usb/core/devio.c:1943 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 RIP: 0033:0x7f5f13226ae9 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:00007f5f1079c188 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007f5f13339f60 RCX: 00007f5f13226ae9 RDX: 0000000020000240 RSI: 000000008038550a RDI: 0000000000000007 RBP: 00007f5f13280f6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fffba69095f R14: 00007f5f1079c300 R15: 0000000000022000 Allocated by task 24062: 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 ffff888012fd5230 which belongs to the cache kmalloc-8 of size 8 The buggy address is located 0 bytes inside of 8-byte region [ffff888012fd5230, ffff888012fd5238) The buggy address belongs to the page: page:ffffea00004bf540 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x12fd5 flags: 0xfff00000000200(slab|node=0|zone=1|lastcpupid=0x7ff) raw: 00fff00000000200 0000000000000000 dead000000000001 ffff888010c41280 raw: 0000000000000000 0000000080660066 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 1, ts 2146401731, free_ts 0 prep_new_page mm/page_alloc.c:2433 [inline] get_page_from_freelist+0xa72/0x2f40 mm/page_alloc.c:4164 __alloc_pages+0x1b2/0x500 mm/page_alloc.c:5376 alloc_page_interleave+0x1e/0x200 mm/mempolicy.c:2037 alloc_pages+0x29f/0x300 mm/mempolicy.c:2187 alloc_slab_page mm/slub.c:1793 [inline] allocate_slab mm/slub.c:1930 [inline] new_slab+0x261/0x460 mm/slub.c:1993 ___slab_alloc+0x798/0xf30 mm/slub.c:3022 __slab_alloc.constprop.0+0x4d/0xa0 mm/slub.c:3109 slab_alloc_node mm/slub.c:3200 [inline] slab_alloc mm/slub.c:3242 [inline] kmem_cache_alloc_trace+0x289/0x2c0 mm/slub.c:3259 kmalloc include/linux/slab.h:590 [inline] kzalloc include/linux/slab.h:724 [inline] add_sysfs_param+0x6e1/0x960 kernel/params.c:643 kernel_add_sysfs_param kernel/params.c:812 [inline] param_sysfs_builtin kernel/params.c:851 [inline] param_sysfs_init+0x301/0x43b kernel/params.c:970 do_one_initcall+0x103/0x650 init/main.c:1303 do_initcall_level init/main.c:1378 [inline] do_initcalls init/main.c:1394 [inline] do_basic_setup init/main.c:1413 [inline] kernel_init_freeable+0x6b1/0x73a init/main.c:1618 kernel_init+0x1a/0x1d0 init/main.c:1507 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295 page_owner free stack trace missing Memory state around the buggy address: ffff888012fd5100: fc fc fc 00 fc fc fc fc fb fc fc fc fc 00 fc fc ffff888012fd5180: fc fc 00 fc fc fc fc fa fc fc fc fc 00 fc fc fc >ffff888012fd5200: fc 00 fc fc fc fc 01 fc fc fc fc 00 fc fc fc fc ^ ffff888012fd5280: 00 fc fc fc fc 00 fc fc fc fc 00 fc fc fc fc 00 ffff888012fd5300: fc fc fc fc 00 fc fc fc fc 00 fc fc fc fc 00 fc ================================================================== ---------------- Code disassembly (best guess): 0: 48 89 ef mov %rbp,%rdi 3: 5d pop %rbp 4: e9 01 ed 49 00 jmpq 0x49ed0a 9: 5d pop %rbp a: be 03 00 00 00 mov $0x3,%esi f: e9 06 e8 6a 02 jmpq 0x26ae81a 14: 66 0f 1f 44 00 00 nopw 0x0(%rax,%rax,1) 1a: 48 8b be b0 01 00 00 mov 0x1b0(%rsi),%rdi 21: e8 b4 ff ff ff callq 0xffffffda 26: 31 c0 xor %eax,%eax 28: c3 retq 29: 90 nop * 2a: 65 8b 05 19 8b 8a 7e mov %gs:0x7e8a8b19(%rip),%eax # 0x7e8a8b4a <-- trapping instruction 31: 89 c1 mov %eax,%ecx 33: 48 8b 34 24 mov (%rsp),%rsi 37: 81 e1 00 01 00 00 and $0x100,%ecx 3d: 65 gs 3e: 48 rex.W 3f: 8b .byte 0x8b