==================================================================
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 ffff8880797d4910 by task syz-executor.4/10040
CPU: 1 PID: 10040 Comm: syz-executor.4 Not tainted 5.16.0-rc3-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:__raw_spin_unlock_irq include/linux/spinlock_api_smp.h:160 [inline]
RIP: 0010:_raw_spin_unlock_irq+0x25/0x40 kernel/locking/spinlock.c:202
Code: 0f 1f 44 00 00 55 48 8b 74 24 08 48 89 fd 48 83 c7 18 e8 6e bf 15 f8 48 89 ef e8 b6 35 16 f8 e8 31 f0 36 f8 fb bf 01 00 00 00 36 fe 08 f8 65 8b 05 0f 71 bb 76 85 c0 74 02 5d c3 e8 2b 46 b9
RSP: 0018:ffffc90004a3f9d0 EFLAGS: 00000202
RAX: 0000000000000123 RBX: ffff88806deb1d00 RCX: 1ffffffff1b21fc1
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000001
RBP: ffffc90004a3fae0 R08: 0000000000000001 R09: 0000000000000001
R10: ffffffff817def48 R11: 0000000000000000 R12: ffffc90004a3fae0
R13: ffffc90004a3fad8 R14: dffffc0000000000 R15: ffffc90004a3fa18
do_wait_for_common kernel/sched/completion.c:84 [inline]
__wait_for_common kernel/sched/completion.c:106 [inline]
wait_for_common kernel/sched/completion.c:117 [inline]
wait_for_completion_killable_timeout+0x1d6/0x320 kernel/sched/completion.c:266
usbfs_start_wait_urb+0x173/0x3d0 drivers/usb/core/devio.c:1130
do_proc_bulk+0x535/0xba0 drivers/usb/core/devio.c:1313
proc_bulk drivers/usb/core/devio.c:1351 [inline]
usbdev_do_ioctl drivers/usb/core/devio.c:2625 [inline]
usbdev_ioctl+0x586/0x36c0 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: 0033:0x7f31e858bae9
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:00007f31e5b01188 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f31e869ef60 RCX: 00007f31e858bae9
RDX: 00000000200004c0 RSI: 00000000c0185502 RDI: 0000000000000003
RBP: 00007f31e85e5f6d R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f31e8bd2b2f R14: 00007f31e5b01300 R15: 0000000000022000
Allocated by task 10040:
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]
do_proc_bulk+0x2fc/0xba0 drivers/usb/core/devio.c:1292
proc_bulk drivers/usb/core/devio.c:1351 [inline]
usbdev_do_ioctl drivers/usb/core/devio.c:2625 [inline]
usbdev_ioctl+0x586/0x36c0 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 ffff8880797d4910
which belongs to the cache kmalloc-8 of size 8
The buggy address is located 0 bytes inside of
8-byte region [ffff8880797d4910, ffff8880797d4918)
The buggy address belongs to the page:
page:ffffea0001e5f500 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x797d4
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 9732, ts 227385849151, free_ts 227349789224
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]
slab_alloc mm/slub.c:3242 [inline]
__kmalloc_track_caller+0x2e7/0x320 mm/slub.c:4925
kmemdup+0x23/0x50 mm/util.c:128
kmemdup include/linux/fortify-string.h:304 [inline]
ip6_opt_dup net/ipv6/ip6_output.c:1318 [inline]
ip6_setup_cork+0x530/0x1780 net/ipv6/ip6_output.c:1379
ip6_make_skb+0x22d/0x550 net/ipv6/ip6_output.c:1983
udpv6_sendmsg+0x22d6/0x2c40 net/ipv6/udp.c:1541
inet6_sendmsg+0x99/0xe0 net/ipv6/af_inet6.c:644
sock_sendmsg_nosec net/socket.c:704 [inline]
sock_sendmsg+0xcf/0x120 net/socket.c:724
____sys_sendmsg+0x331/0x810 net/socket.c:2409
___sys_sendmsg+0xf3/0x170 net/socket.c:2463
__sys_sendmmsg+0x195/0x470 net/socket.c:2549
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
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
free_bprm+0x65/0x2e0 fs/exec.c:1481
kernel_execve+0x380/0x460 fs/exec.c:1978
call_usermodehelper_exec_async+0x2e3/0x580 kernel/umh.c:112
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
Memory state around the buggy address:
ffff8880797d4800: fc fc fc fc fb fc fc fc fc fb fc fc fc fc fb fc
ffff8880797d4880: fc fc fc fb fc fc fc fc fb fc fc fc fc fb fc fc
>ffff8880797d4900: fc fc 01 fc fc fc fc 00 fc fc fc fc fa fc fc fc
^
ffff8880797d4980: fc fa fc fc fc fc fa fc fc fc fc fa fc fc fc fc
ffff8880797d4a00: fa fc fc fc fc fa fc fc fc fc fa fc fc fc fc fa
==================================================================
----------------
Code disassembly (best guess):
0: 0f 1f 44 00 00 nopl 0x0(%rax,%rax,1)
5: 55 push %rbp
6: 48 8b 74 24 08 mov 0x8(%rsp),%rsi
b: 48 89 fd mov %rdi,%rbp
e: 48 83 c7 18 add $0x18,%rdi
12: e8 6e bf 15 f8 callq 0xf815bf85
17: 48 89 ef mov %rbp,%rdi
1a: e8 b6 35 16 f8 callq 0xf81635d5
1f: e8 31 f0 36 f8 callq 0xf836f055
24: fb sti
25: bf 01 00 00 00 mov $0x1,%edi
* 2a: e8 36 fe 08 f8 callq 0xf808fe65 <-- trapping instruction
2f: 65 8b 05 0f 71 bb 76 mov %gs:0x76bb710f(%rip),%eax # 0x76bb7145
36: 85 c0 test %eax,%eax
38: 74 02 je 0x3c
3a: 5d pop %rbp
3b: c3 retq
3c: e8 .byte 0xe8
3d: 2b 46 b9 sub -0x47(%rsi),%eax