==================================================================
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 ffff8880739aea80 by task syz-executor.4/6718
CPU: 0 PID: 6718 Comm: syz-executor.4 Not tainted 5.16.0-rc2-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/0x2ed 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:finish_task_switch.isra.0+0x323/0xb80 kernel/sched/core.c:4852
Code: 03 04 f4 07 85 c0 75 02 0f 0b 48 85 db 0f 85 25 01 00 00 4c 89 f7 e8 fc f7 ff ff e8 07 4a 2d 00 fb 65 48 8b 1c 25 40 70 02 00 <48> 8d bb 80 15 00 00 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1
RSP: 0018:ffffc90019407a88 EFLAGS: 00000206
RAX: 0000000000003b1d RBX: ffff8881f2a561c0 RCX: 1ffffffff1fef2fe
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000
RBP: ffffc90019407ad0 R08: 0000000000000001 R09: ffffffff8ff74a0f
R10: 0000000000000001 R11: 0000000000000000 R12: ffff8880b9c3a858
R13: ffff88819d4c4180 R14: ffff8880b9c39b00 R15: ffff8880b9c3a538
context_switch kernel/sched/core.c:4975 [inline]
__schedule+0xaa2/0x4940 kernel/sched/core.c:6253
preempt_schedule_irq+0x4e/0x90 kernel/sched/core.c:6668
irqentry_exit+0x31/0x80 kernel/entry/common.c:425
asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:638
RIP: 0010:strcmp+0x19/0xb0 lib/string.c:350
Code: ff ff 66 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 41 55 49 bd 00 00 00 00 00 fc ff df 41 54 55 53 48 89 fb 48 83 ec 08 eb 08 <40> 84 ed 74 5d 4c 89 e6 48 89 df 48 83 c3 01 48 89 f8 48 89 fa 48
RSP: 0018:ffffc90019407cd8 EFLAGS: 00000246
RAX: 0000000000000000 RBX: ffff88801f4a9141 RCX: ffffc900118b7000
RDX: 0000000000000000 RSI: ffff888020461200 RDI: ffff88801f4a9140
RBP: 0000000000000039 R08: 00000000747a50cb R09: 0000000000000000
R10: ffffffff81f25c1d R11: 0000000000011c00 R12: ffff888020461201
R13: dffffc0000000000 R14: 0000000000000000 R15: ffff88801f4a9140
kernfs_name_compare fs/kernfs/dir.c:326 [inline]
kernfs_name_compare fs/kernfs/dir.c:315 [inline]
kernfs_find_ns+0x17c/0x370 fs/kernfs/dir.c:805
kernfs_remove_by_name_ns+0x37/0xa0 fs/kernfs/dir.c:1542
driver_sysfs_remove drivers/base/dd.c:457 [inline]
__device_release_driver+0x290/0x700 drivers/base/dd.c:1190
device_release_driver_internal drivers/base/dd.c:1236 [inline]
device_release_driver+0x26/0x40 drivers/base/dd.c:1259
usb_driver_release_interface+0x102/0x180 drivers/usb/core/driver.c:627
releaseintf+0xdf/0x160 drivers/usb/core/devio.c:810
usbdev_release+0x26b/0x4b0 drivers/usb/core/devio.c:1086
__fput+0x286/0x9f0 fs/file_table.c:280
task_work_run+0xdd/0x1a0 kernel/task_work.c:164
tracehook_notify_resume include/linux/tracehook.h:189 [inline]
exit_to_user_mode_loop kernel/entry/common.c:175 [inline]
exit_to_user_mode_prepare+0x27e/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
RIP: 0033:0x7f1d0ddd8ae9
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:00007f1d0b34e188 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: 0000000000000000 RBX: 00007f1d0deebf60 RCX: 00007f1d0ddd8ae9
RDX: 0000000020000000 RSI: 000000008038550a RDI: 0000000000000006
RBP: 00007f1d0de32f6d R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffe986f355f R14: 00007f1d0b34e300 R15: 0000000000022000
Allocated by task 6718:
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+0xa6/0xd0 mm/kasan/common.c:522
kasan_kmalloc include/linux/kasan.h:269 [inline]
__do_kmalloc mm/slab.c:3702 [inline]
__kmalloc+0x209/0x4d0 mm/slab.c:3711
kmalloc include/linux/slab.h:595 [inline]
proc_do_submiturb+0x2a49/0x35f0 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 ffff8880739aea80
which belongs to the cache kmalloc-32 of size 32
The buggy address is located 0 bytes inside of
32-byte region [ffff8880739aea80, ffff8880739aeaa0)
The buggy address belongs to the page:
page:ffffea0001ce6b80 refcount:1 mapcount:0 mapping:0000000000000000 index:0xffff8880739aefc1 pfn:0x739ae
flags: 0xfff00000000200(slab|node=0|zone=1|lastcpupid=0x7ff)
raw: 00fff00000000200 ffffea0001e86c88 ffffea00007dc888 ffff888010c40100
raw: ffff8880739aefc1 ffff8880739ae000 000000010000003f 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 0x342040(__GFP_IO|__GFP_NOWARN|__GFP_COMP|__GFP_HARDWALL|__GFP_THISNODE), pid 2972, ts 353944095376, free_ts 346000776697
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_node include/linux/gfp.h:570 [inline]
kmem_getpages mm/slab.c:1377 [inline]
cache_grow_begin+0x75/0x470 mm/slab.c:2593
cache_alloc_refill+0x27f/0x380 mm/slab.c:2965
____cache_alloc mm/slab.c:3048 [inline]
____cache_alloc mm/slab.c:3031 [inline]
__do_cache_alloc mm/slab.c:3275 [inline]
slab_alloc mm/slab.c:3316 [inline]
__do_kmalloc mm/slab.c:3700 [inline]
__kmalloc+0x3b3/0x4d0 mm/slab.c:3711
kmalloc include/linux/slab.h:595 [inline]
kzalloc include/linux/slab.h:724 [inline]
tomoyo_encode2.part.0+0xe9/0x3a0 security/tomoyo/realpath.c:45
tomoyo_encode2 security/tomoyo/realpath.c:31 [inline]
tomoyo_encode+0x28/0x50 security/tomoyo/realpath.c:80
tomoyo_realpath_from_path+0x186/0x620 security/tomoyo/realpath.c:288
tomoyo_get_realpath security/tomoyo/file.c:151 [inline]
tomoyo_path_perm+0x21b/0x400 security/tomoyo/file.c:822
security_inode_getattr+0xcf/0x140 security/security.c:1334
vfs_getattr fs/stat.c:157 [inline]
vfs_statx+0x164/0x390 fs/stat.c:225
vfs_fstatat fs/stat.c:243 [inline]
vfs_lstat include/linux/fs.h:3358 [inline]
__do_sys_newlstat+0x91/0x110 fs/stat.c:398
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
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
free_work+0x58/0x70 mm/vmalloc.c:95
process_one_work+0x9b2/0x1690 kernel/workqueue.c:2298
worker_thread+0x658/0x11f0 kernel/workqueue.c:2445
kthread+0x405/0x4f0 kernel/kthread.c:327
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
Memory state around the buggy address:
ffff8880739ae980: fb fb fb fb fc fc fc fc fa fb fb fb fc fc fc fc
ffff8880739aea00: fa fb fb fb fc fc fc fc 00 00 00 00 fc fc fc fc
>ffff8880739aea80: 01 fc fc fc fc fc fc fc fa fb fb fb fc fc fc fc
^
ffff8880739aeb00: fb fb fb fb fc fc fc fc fa fb fb fb fc fc fc fc
ffff8880739aeb80: fb fb fb fb fc fc fc fc fb fb fb fb fc fc fc fc
==================================================================
----------------
Code disassembly (best guess), 4 bytes skipped:
0: 85 c0 test %eax,%eax
2: 75 02 jne 0x6
4: 0f 0b ud2
6: 48 85 db test %rbx,%rbx
9: 0f 85 25 01 00 00 jne 0x134
f: 4c 89 f7 mov %r14,%rdi
12: e8 fc f7 ff ff callq 0xfffff813
17: e8 07 4a 2d 00 callq 0x2d4a23
1c: fb sti
1d: 65 48 8b 1c 25 40 70 mov %gs:0x27040,%rbx
24: 02 00
* 26: 48 8d bb 80 15 00 00 lea 0x1580(%rbx),%rdi <-- trapping instruction
2d: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax
34: fc ff df
37: 48 89 fa mov %rdi,%rdx
3a: 48 rex.W
3b: c1 .byte 0xc1