[syzbot] KASAN: use-after-free Read in __usb_hcd_giveback_urb (2)

From: syzbot
Date: Tue Dec 06 2022 - 05:44:17 EST

Hello,

syzbot found the following issue on:

HEAD commit: ef4d3ea40565 afs: Fix server->active leak in afs_put_server
git tree: upstream
console output: https://syzkaller.appspot.com/x/log.txt?x=100b244d880000
kernel config: https://syzkaller.appspot.com/x/.config?x=8e7e79f8a1e34200
dashboard link: https://syzkaller.appspot.com/bug?extid=712fd0e60dda3ba34642
compiler: Debian clang version 13.0.1-++20220126092033+75e33f71c2da-1~exp1~20220126212112.63, GNU ld (GNU Binutils for Debian) 2.35.2

Unfortunately, I don't have any reproducer for this issue yet.

Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/ef790e7777cd/disk-ef4d3ea4.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/2ed3c6bc9230/vmlinux-ef4d3ea4.xz
kernel image: https://storage.googleapis.com/syzbot-assets/f1dbd004fa88/bzImage-ef4d3ea4.xz

IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+712fd0e60dda3ba34642@xxxxxxxxxxxxxxxxxxxxxxxxx

xpad 3-1:179.65: xpad_irq_in - usb_submit_urb failed with result -19
xpad 3-1:179.65: xpad_irq_out - usb_submit_urb failed with result -19
==================================================================
BUG: KASAN: use-after-free in register_lock_class+0x8d2/0x9b0 kernel/locking/lockdep.c:1338
Read of size 1 at addr ffff88807a58b091 by task kworker/u4:3/46

CPU: 0 PID: 46 Comm: kworker/u4:3 Not tainted 6.1.0-rc7-syzkaller-00103-gef4d3ea40565 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022
Workqueue: bat_events batadv_nc_worker
Call Trace:
<IRQ>
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x1e3/0x2cb lib/dump_stack.c:106
print_address_description+0x74/0x340 mm/kasan/report.c:284
print_report+0x107/0x220 mm/kasan/report.c:395
kasan_report+0x139/0x170 mm/kasan/report.c:495
register_lock_class+0x8d2/0x9b0 kernel/locking/lockdep.c:1338
__lock_acquire+0xe4/0x1f60 kernel/locking/lockdep.c:4934
lock_acquire+0x1a7/0x400 kernel/locking/lockdep.c:5668
__raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
_raw_spin_lock_irqsave+0xd1/0x120 kernel/locking/spinlock.c:162
__wake_up_common_lock kernel/sched/wait.c:136 [inline]
__wake_up+0xf8/0x1c0 kernel/sched/wait.c:156
__usb_hcd_giveback_urb+0x3a0/0x530 drivers/usb/core/hcd.c:1674
dummy_timer+0x86b/0x3110 drivers/usb/gadget/udc/dummy_hcd.c:1988
call_timer_fn+0xf5/0x210 kernel/time/timer.c:1474
expire_timers kernel/time/timer.c:1519 [inline]
__run_timers+0x76a/0x980 kernel/time/timer.c:1790
run_timer_softirq+0x63/0xf0 kernel/time/timer.c:1803
__do_softirq+0x277/0x75b kernel/softirq.c:571
__irq_exit_rcu+0xec/0x170 kernel/softirq.c:650
irq_exit_rcu+0x5/0x20 kernel/softirq.c:662
sysvec_apic_timer_interrupt+0x91/0xb0 arch/x86/kernel/apic/apic.c:1107
</IRQ>
<TASK>
asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:649
RIP: 0010:lock_acquire+0x21e/0x400 kernel/locking/lockdep.c:5672
Code: 23 00 74 08 4c 89 f7 e8 20 aa 75 00 f6 44 24 61 02 0f 85 76 01 00 00 41 f7 c7 00 02 00 00 74 01 fb 48 c7 44 24 40 0e 36 e0 45 <4b> c7 04 2c 00 00 00 00 43 c7 44 2c 09 00 00 00 00 43 c7 44 2c 11
RSP: 0018:ffffc90000b77a60 EFLAGS: 00000206
RAX: 0000000000000001 RBX: 1ffff9200016ef58 RCX: ffff888018f2c4c8
RDX: dffffc0000000000 RSI: ffffffff8b0da2a0 RDI: ffffffff8b68fcc0
RBP: ffffc90000b77bb8 R08: dffffc0000000000 R09: fffffbfff20e4c29
R10: fffffbfff20e4c29 R11: 1ffffffff20e4c28 R12: dffffc0000000000
R13: 1ffff9200016ef54 R14: ffffc90000b77ac0 R15: 0000000000000246
rcu_lock_acquire+0x2a/0x30 include/linux/rcupdate.h:304
rcu_read_lock include/linux/rcupdate.h:738 [inline]
batadv_nc_purge_orig_hash net/batman-adv/network-coding.c:408 [inline]
batadv_nc_worker+0xc8/0x5b0 net/batman-adv/network-coding.c:719
process_one_work+0x81c/0xd10 kernel/workqueue.c:2289
worker_thread+0xb14/0x1330 kernel/workqueue.c:2436
kthread+0x266/0x300 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306
</TASK>

Allocated by task 3741:
kasan_save_stack mm/kasan/common.c:45 [inline]
kasan_set_track+0x4c/0x70 mm/kasan/common.c:52
____kasan_kmalloc mm/kasan/common.c:371 [inline]
__kasan_kmalloc+0x97/0xb0 mm/kasan/common.c:380
kmalloc include/linux/slab.h:553 [inline]
kzalloc include/linux/slab.h:689 [inline]
xpad_probe+0x3de/0x1b70 drivers/input/joystick/xpad.c:1954
usb_probe_interface+0x66e/0xb60 drivers/usb/core/driver.c:396
call_driver_probe+0x96/0x250
really_probe+0x24c/0x9f0 drivers/base/dd.c:639
__driver_probe_device+0x1f4/0x3f0 drivers/base/dd.c:778
driver_probe_device+0x50/0x240 drivers/base/dd.c:808
__device_attach_driver+0x272/0x3c0 drivers/base/dd.c:936
bus_for_each_drv+0x18a/0x210 drivers/base/bus.c:427
__device_attach+0x372/0x5a0 drivers/base/dd.c:1008
bus_probe_device+0xb8/0x1f0 drivers/base/bus.c:487
device_add+0xb20/0xf90 drivers/base/core.c:3517
usb_set_configuration+0x1a5f/0x20e0 drivers/usb/core/message.c:2170
usb_generic_driver_probe+0x83/0x140 drivers/usb/core/generic.c:238
usb_probe_device+0x131/0x260 drivers/usb/core/driver.c:293
call_driver_probe+0x96/0x250
really_probe+0x24c/0x9f0 drivers/base/dd.c:639
__driver_probe_device+0x1f4/0x3f0 drivers/base/dd.c:778
driver_probe_device+0x50/0x240 drivers/base/dd.c:808
__device_attach_driver+0x272/0x3c0 drivers/base/dd.c:936
bus_for_each_drv+0x18a/0x210 drivers/base/bus.c:427
__device_attach+0x372/0x5a0 drivers/base/dd.c:1008
bus_probe_device+0xb8/0x1f0 drivers/base/bus.c:487
device_add+0xb20/0xf90 drivers/base/core.c:3517
usb_new_device+0xbc2/0x18b0 drivers/usb/core/hub.c:2573
hub_port_connect+0x103b/0x2910 drivers/usb/core/hub.c:5353
hub_port_connect_change+0x619/0xbe0 drivers/usb/core/hub.c:5497
port_event+0xec6/0x13b0 drivers/usb/core/hub.c:5653
hub_event+0x5c1/0xd80 drivers/usb/core/hub.c:5735
process_one_work+0x81c/0xd10 kernel/workqueue.c:2289
worker_thread+0xb14/0x1330 kernel/workqueue.c:2436
kthread+0x266/0x300 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306

Freed by task 3709:
kasan_save_stack mm/kasan/common.c:45 [inline]
kasan_set_track+0x4c/0x70 mm/kasan/common.c:52
kasan_save_free_info+0x27/0x40 mm/kasan/generic.c:511
____kasan_slab_free+0xd6/0x120 mm/kasan/common.c:236
kasan_slab_free include/linux/kasan.h:177 [inline]
slab_free_hook mm/slub.c:1724 [inline]
slab_free_freelist_hook+0x12e/0x1a0 mm/slub.c:1750
slab_free mm/slub.c:3661 [inline]
__kmem_cache_free+0x71/0x110 mm/slub.c:3674
xpad_disconnect+0x332/0x450 drivers/input/joystick/xpad.c:2135
usb_unbind_interface+0x1f2/0x860 drivers/usb/core/driver.c:458
device_remove drivers/base/dd.c:550 [inline]
__device_release_driver drivers/base/dd.c:1249 [inline]
device_release_driver_internal+0x5bc/0x8a0 drivers/base/dd.c:1275
bus_remove_device+0x2fd/0x410 drivers/base/bus.c:529
device_del+0x6ec/0xbe0 drivers/base/core.c:3704
usb_disable_device+0x3dd/0x820 drivers/usb/core/message.c:1419
usb_disconnect+0x346/0x890 drivers/usb/core/hub.c:2235
hub_port_connect+0x296/0x2910 drivers/usb/core/hub.c:5197
hub_port_connect_change+0x619/0xbe0 drivers/usb/core/hub.c:5497
port_event+0xec6/0x13b0 drivers/usb/core/hub.c:5653
hub_event+0x5c1/0xd80 drivers/usb/core/hub.c:5735
process_one_work+0x81c/0xd10 kernel/workqueue.c:2289
worker_thread+0xb14/0x1330 kernel/workqueue.c:2436
kthread+0x266/0x300 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306

The buggy address belongs to the object at ffff88807a58b000
which belongs to the cache kmalloc-1k of size 1024
The buggy address is located 145 bytes inside of
1024-byte region [ffff88807a58b000, ffff88807a58b400)

The buggy address belongs to the physical page:
page:ffffea0001e96200 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x7a588
head:ffffea0001e96200 order:3 compound_mapcount:0 compound_pincount:0
flags: 0xfff00000010200(slab|head|node=0|zone=1|lastcpupid=0x7ff)
raw: 00fff00000010200 0000000000000000 dead000000000001 ffff888012841dc0
raw: 0000000000000000 0000000000100010 00000001ffffffff 0000000000000000
page dumped because: kasan: bad access detected
page_owner tracks the page as allocated
page last allocated via order 3, migratetype Unmovable, gfp_mask 0xd2a20(GFP_ATOMIC|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), pid 3623, tgid 3621 (syz-fuzzer), ts 88914482150, free_ts 88747836155
prep_new_page mm/page_alloc.c:2539 [inline]
get_page_from_freelist+0x72b/0x7a0 mm/page_alloc.c:4291
__alloc_pages+0x259/0x560 mm/page_alloc.c:5558
alloc_slab_page+0x70/0xf0 mm/slub.c:1794
allocate_slab+0x5e/0x4b0 mm/slub.c:1939
new_slab mm/slub.c:1992 [inline]
___slab_alloc+0x7f4/0xeb0 mm/slub.c:3180
__slab_alloc mm/slub.c:3279 [inline]
slab_alloc_node mm/slub.c:3364 [inline]
__kmem_cache_alloc_node+0x252/0x310 mm/slub.c:3437
__do_kmalloc_node mm/slab_common.c:954 [inline]
__kmalloc_node_track_caller+0x9c/0x190 mm/slab_common.c:975
kmalloc_reserve net/core/skbuff.c:437 [inline]
__alloc_skb+0x11d/0x620 net/core/skbuff.c:509
alloc_skb include/linux/skbuff.h:1267 [inline]
__tcp_send_ack+0x98/0x5f0 net/ipv4/tcp_output.c:3960
tcp_cleanup_rbuf net/ipv4/tcp.c:1628 [inline]
tcp_recvmsg_locked+0x1cf8/0x25f0 net/ipv4/tcp.c:2649
tcp_recvmsg+0x22b/0x8b0 net/ipv4/tcp.c:2679
inet_recvmsg+0x13a/0x250 net/ipv4/af_inet.c:861
sock_recvmsg_nosec net/socket.c:995 [inline]
sock_recvmsg net/socket.c:1013 [inline]
sock_read_iter+0x3fa/0x530 net/socket.c:1086
call_read_iter include/linux/fs.h:2193 [inline]
new_sync_read fs/read_write.c:389 [inline]
vfs_read+0x7cf/0xbc0 fs/read_write.c:470
ksys_read+0x19b/0x2c0 fs/read_write.c:613
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x2b/0x70 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:1459 [inline]
free_pcp_prepare+0x80c/0x8f0 mm/page_alloc.c:1509
free_unref_page_prepare mm/page_alloc.c:3387 [inline]
free_unref_page+0x7d/0x630 mm/page_alloc.c:3483
__skb_frag_unref include/linux/skbuff.h:3385 [inline]
skb_release_data+0x37a/0x6d0 net/core/skbuff.c:783
skb_release_all net/core/skbuff.c:854 [inline]
__kfree_skb+0x56/0x1d0 net/core/skbuff.c:868
tcp_eat_recv_skb net/ipv4/tcp.c:1638 [inline]
tcp_recvmsg_locked+0x14b2/0x25f0 net/ipv4/tcp.c:2633
tcp_recvmsg+0x22b/0x8b0 net/ipv4/tcp.c:2679
inet_recvmsg+0x13a/0x250 net/ipv4/af_inet.c:861
sock_recvmsg_nosec net/socket.c:995 [inline]
sock_recvmsg net/socket.c:1013 [inline]
sock_read_iter+0x3fa/0x530 net/socket.c:1086
call_read_iter include/linux/fs.h:2193 [inline]
new_sync_read fs/read_write.c:389 [inline]
vfs_read+0x7cf/0xbc0 fs/read_write.c:470
ksys_read+0x19b/0x2c0 fs/read_write.c:613
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x2b/0x70 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd

Memory state around the buggy address:
ffff88807a58af80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
ffff88807a58b000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
>ffff88807a58b080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
^
ffff88807a58b100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
ffff88807a58b180: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
==================================================================
----------------
Code disassembly (best guess):
0: 23 00 and (%rax),%eax
2: 74 08 je 0xc
4: 4c 89 f7 mov %r14,%rdi
7: e8 20 aa 75 00 callq 0x75aa2c
c: f6 44 24 61 02 testb $0x2,0x61(%rsp)
11: 0f 85 76 01 00 00 jne 0x18d
17: 41 f7 c7 00 02 00 00 test $0x200,%r15d
1e: 74 01 je 0x21
20: fb sti
21: 48 c7 44 24 40 0e 36 movq $0x45e0360e,0x40(%rsp)
28: e0 45
* 2a: 4b c7 04 2c 00 00 00 movq $0x0,(%r12,%r13,1) <-- trapping instruction
31: 00
32: 43 c7 44 2c 09 00 00 movl $0x0,0x9(%r12,%r13,1)
39: 00 00
3b: 43 rex.XB
3c: c7 .byte 0xc7
3d: 44 2c 11 rex.R sub $0x11,%al


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