usb 4-1: ath: unknown panic pattern!
==================================================================
BUG: KASAN: use-after-free in instrument_atomic_read include/linux/instrumented.h:71 [inline]
BUG: KASAN: use-after-free in atomic_read include/linux/atomic/atomic-instrumented.h:27 [inline]
BUG: KASAN: use-after-free in refcount_read include/linux/refcount.h:147 [inline]
BUG: KASAN: use-after-free in skb_unref include/linux/skbuff.h:1098 [inline]
BUG: KASAN: use-after-free in kfree_skb_reason+0x33/0x400 net/core/skbuff.c:772
Read of size 4 at addr ffff88811a0a149c by task syz-executor.0/15993
CPU: 1 PID: 15993 Comm: syz-executor.0 Not tainted 5.17.0-rc4-syzkaller-00061-g4378e427f705 #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/0x336 mm/kasan/report.c:255
__kasan_report mm/kasan/report.c:442 [inline]
kasan_report.cold+0x83/0xdf mm/kasan/report.c:459
check_region_inline mm/kasan/generic.c:183 [inline]
kasan_check_range+0x13d/0x180 mm/kasan/generic.c:189
instrument_atomic_read include/linux/instrumented.h:71 [inline]
atomic_read include/linux/atomic/atomic-instrumented.h:27 [inline]
refcount_read include/linux/refcount.h:147 [inline]
skb_unref include/linux/skbuff.h:1098 [inline]
kfree_skb_reason+0x33/0x400 net/core/skbuff.c:772
kfree_skb include/linux/skbuff.h:1114 [inline]
ath9k_hif_usb_reg_in_cb+0x4c2/0x630 drivers/net/wireless/ath/ath9k/hif_usb.c:771
__usb_hcd_giveback_urb+0x2b0/0x5c0 drivers/usb/core/hcd.c:1670
usb_hcd_giveback_urb+0x367/0x410 drivers/usb/core/hcd.c:1747
dummy_timer+0x11f9/0x32b0 drivers/usb/gadget/udc/dummy_hcd.c:1987
call_timer_fn+0x1a5/0x6b0 kernel/time/timer.c:1421
expire_timers kernel/time/timer.c:1466 [inline]
__run_timers.part.0+0x67c/0xa30 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+0x288/0x9a5 kernel/softirq.c:558
invoke_softirq kernel/softirq.c:432 [inline]
__irq_exit_rcu+0x113/0x170 kernel/softirq.c:637
irq_exit_rcu+0x5/0x20 kernel/softirq.c:649
sysvec_apic_timer_interrupt+0x8e/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_irqrestore include/linux/spinlock_api_smp.h:152 [inline]
RIP: 0010:_raw_spin_unlock_irqrestore+0x38/0x70 kernel/locking/spinlock.c:194
Code: 74 24 10 e8 0a 18 52 fb 48 89 ef e8 62 96 52 fb 81 e3 00 02 00 00 75 25 9c 58 f6 c4 02 75 2d 48 85 db 74 01 fb bf 01 00 00 00 13 05 48 fb 65 8b 05 ac 09 2b 7a 85 c0 74 0a 5b 5d c3 e8 e0 d4
RSP: 0018:ffffc9000ab37920 EFLAGS: 00000206
RAX: 0000000000000006 RBX: 0000000000000200 RCX: 1ffffffff150271e
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000001
RBP: ffff88813c6e7a80 R08: 0000000000000001 R09: ffffffff8a7eb76f
R10: 0000000000000001 R11: 0000000000000000 R12: ffffea0004f07500
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
__set_page_dirty include/linux/pagemap.h:879 [inline]
mark_buffer_dirty+0x4e6/0x650 fs/buffer.c:1108
__block_commit_write.constprop.0.isra.0+0x266/0x360 fs/buffer.c:2084
block_write_end fs/buffer.c:2163 [inline]
generic_write_end+0xc9/0x400 fs/buffer.c:2177
ext4_da_write_end+0x1c2/0x990 fs/ext4/inode.c:3042
generic_perform_write+0x2c6/0x510 mm/filemap.c:3776
ext4_buffered_write_iter+0x1a2/0x390 fs/ext4/file.c:268
ext4_file_write_iter+0x3bd/0x1970 fs/ext4/file.c:677
call_write_iter include/linux/fs.h:2074 [inline]
new_sync_write+0x431/0x660 fs/read_write.c:503
vfs_write+0x7cd/0xae0 fs/read_write.c:590
ksys_write+0x12d/0x250 fs/read_write.c:643
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: 0033:0x7f9f27cf6059
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 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f9f26e6c168 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f9f27e08f60 RCX: 00007f9f27cf6059
RDX: 00000000fffffc71 RSI: 00000000200002c0 RDI: 0000000000000010
RBP: 00007f9f27d5008d R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fffcfaee75f R14: 00007f9f26e6c300 R15: 0000000000022000
Allocated by task 4112:
kasan_save_stack+0x1e/0x40 mm/kasan/common.c:38
kasan_set_track mm/kasan/common.c:45 [inline]
set_alloc_info mm/kasan/common.c:436 [inline]
__kasan_slab_alloc+0x66/0x80 mm/kasan/common.c:469
kasan_slab_alloc include/linux/kasan.h:260 [inline]
slab_post_alloc_hook mm/slab.h:732 [inline]
slab_alloc_node mm/slub.c:3230 [inline]
kmem_cache_alloc_node+0x25e/0x4b0 mm/slub.c:3266
__alloc_skb+0x215/0x340 net/core/skbuff.c:414
alloc_skb include/linux/skbuff.h:1158 [inline]
ath9k_hif_usb_alloc_reg_in_urbs drivers/net/wireless/ath/ath9k/hif_usb.c:964 [inline]
ath9k_hif_usb_alloc_urbs+0x91d/0x1040 drivers/net/wireless/ath/ath9k/hif_usb.c:1023
ath9k_hif_usb_dev_init drivers/net/wireless/ath/ath9k/hif_usb.c:1109 [inline]
ath9k_hif_usb_firmware_cb+0x148/0x530 drivers/net/wireless/ath/ath9k/hif_usb.c:1242
request_firmware_work_func+0x12c/0x230 drivers/base/firmware_loader/main.c:1022
process_one_work+0x9ac/0x1650 kernel/workqueue.c:2307
worker_thread+0x657/0x1110 kernel/workqueue.c:2454
kthread+0x2ef/0x3a0 kernel/kthread.c:377
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
Freed by task 15993:
kasan_save_stack+0x1e/0x40 mm/kasan/common.c:38
kasan_set_track+0x21/0x30 mm/kasan/common.c:45
kasan_set_free_info+0x20/0x30 mm/kasan/generic.c:370
____kasan_slab_free mm/kasan/common.c:366 [inline]
____kasan_slab_free+0x102/0x150 mm/kasan/common.c:328
kasan_slab_free include/linux/kasan.h:236 [inline]
slab_free_hook mm/slub.c:1728 [inline]
slab_free_freelist_hook mm/slub.c:1754 [inline]
slab_free mm/slub.c:3509 [inline]
kmem_cache_free+0xd5/0x400 mm/slub.c:3526
kfree_skbmem+0xef/0x1b0 net/core/skbuff.c:700
__kfree_skb net/core/skbuff.c:757 [inline]
kfree_skb_reason net/core/skbuff.c:776 [inline]
kfree_skb_reason+0x145/0x400 net/core/skbuff.c:770
kfree_skb include/linux/skbuff.h:1114 [inline]
ath9k_htc_rx_msg+0x1ed/0xb70 drivers/net/wireless/ath/ath9k/htc_hst.c:451
ath9k_hif_usb_reg_in_cb+0x1ac/0x630 drivers/net/wireless/ath/ath9k/hif_usb.c:740
__usb_hcd_giveback_urb+0x2b0/0x5c0 drivers/usb/core/hcd.c:1670
usb_hcd_giveback_urb+0x367/0x410 drivers/usb/core/hcd.c:1747
dummy_timer+0x11f9/0x32b0 drivers/usb/gadget/udc/dummy_hcd.c:1987
call_timer_fn+0x1a5/0x6b0 kernel/time/timer.c:1421
expire_timers kernel/time/timer.c:1466 [inline]
__run_timers.part.0+0x67c/0xa30 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+0x288/0x9a5 kernel/softirq.c:558
The buggy address belongs to the object at ffff88811a0a13c0
which belongs to the cache skbuff_head_cache of size 232
The buggy address is located 220 bytes inside of
232-byte region [ffff88811a0a13c0, ffff88811a0a14a8)
The buggy address belongs to the page:
page:ffffea0004682840 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x11a0a1
flags: 0x200000000000200(slab|node=0|zone=2)
raw: 0200000000000200 ffffea0004715f40 dead000000000005 ffff8881003d3640
raw: 0000000000000000 00000000000c000c 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 9160, ts 761502765282, free_ts 761465601981
prep_new_page mm/page_alloc.c:2434 [inline]
get_page_from_freelist+0x122d/0x2940 mm/page_alloc.c:4165
__alloc_pages+0x1b2/0x500 mm/page_alloc.c:5389
alloc_pages+0x1aa/0x310 mm/mempolicy.c:2271
alloc_slab_page mm/slub.c:1799 [inline]
allocate_slab+0x27f/0x3e0 mm/slub.c:1944
new_slab mm/slub.c:2004 [inline]
___slab_alloc+0xc12/0x1450 mm/slub.c:3018
__slab_alloc.constprop.0+0x4d/0xa0 mm/slub.c:3105
slab_alloc_node mm/slub.c:3196 [inline]
kmem_cache_alloc_node+0x397/0x4b0 mm/slub.c:3266
__alloc_skb+0x215/0x340 net/core/skbuff.c:414
alloc_skb include/linux/skbuff.h:1158 [inline]
alloc_skb_with_frags+0x93/0x620 net/core/skbuff.c:5956
sock_alloc_send_pskb+0x793/0x920 net/core/sock.c:2586
unix_dgram_sendmsg+0x414/0x1a10 net/unix/af_unix.c:1896
sock_sendmsg_nosec net/socket.c:705 [inline]
sock_sendmsg+0xcf/0x120 net/socket.c:725
sock_write_iter+0x289/0x3c0 net/socket.c:1061
call_write_iter include/linux/fs.h:2074 [inline]
new_sync_write+0x431/0x660 fs/read_write.c:503
vfs_write+0x7cd/0xae0 fs/read_write.c:590
ksys_write+0x1ee/0x250 fs/read_write.c:643
page last free stack trace:
reset_page_owner include/linux/page_owner.h:24 [inline]
free_pages_prepare mm/page_alloc.c:1352 [inline]
free_pcp_prepare+0x361/0x760 mm/page_alloc.c:1404
free_unref_page_prepare mm/page_alloc.c:3325 [inline]
free_unref_page+0x19/0x580 mm/page_alloc.c:3404
qlink_free mm/kasan/quarantine.c:157 [inline]
qlist_free_all+0x6d/0x160 mm/kasan/quarantine.c:176
kasan_quarantine_reduce+0x180/0x200 mm/kasan/quarantine.c:283
__kasan_slab_alloc+0x78/0x80 mm/kasan/common.c:446
kasan_slab_alloc include/linux/kasan.h:260 [inline]
slab_post_alloc_hook mm/slab.h:732 [inline]
slab_alloc_node mm/slub.c:3230 [inline]
slab_alloc mm/slub.c:3238 [inline]
kmem_cache_alloc+0x241/0x480 mm/slub.c:3243
getname_flags.part.0+0x50/0x4f0 fs/namei.c:138
getname_flags+0x9a/0xe0 include/linux/audit.h:323
user_path_at_empty+0x2b/0x60 fs/namei.c:2850
do_readlinkat+0xcd/0x2f0 fs/stat.c:443
__do_sys_readlink fs/stat.c:476 [inline]
__se_sys_readlink fs/stat.c:473 [inline]
__x64_sys_readlink+0x74/0xb0 fs/stat.c:473
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:
ffff88811a0a1380: fc fc fc fc fc fc fc fc fa fb fb fb fb fb fb fb
ffff88811a0a1400: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
>ffff88811a0a1480: fb fb fb fb fb fc fc fc fc fc fc fc fc fc fc fc
^
ffff88811a0a1500: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
ffff88811a0a1580: fb fb fb fb fb fb fb fb fb fb fb fb fb fc fc fc
==================================================================
----------------
Code disassembly (best guess):
0: 74 24 je 0x26
2: 10 e8 adc %ch,%al
4: 0a 18 or (%rax),%bl
6: 52 push %rdx
7: fb sti
8: 48 89 ef mov %rbp,%rdi
b: e8 62 96 52 fb callq 0xfb529672
10: 81 e3 00 02 00 00 and $0x200,%ebx
16: 75 25 jne 0x3d
18: 9c pushfq
19: 58 pop %rax
1a: f6 c4 02 test $0x2,%ah
1d: 75 2d jne 0x4c
1f: 48 85 db test %rbx,%rbx
22: 74 01 je 0x25
24: fb sti
25: bf 01 00 00 00 mov $0x1,%edi
* 2a: e8 13 05 48 fb callq 0xfb480542 <-- trapping instruction
2f: 65 8b 05 ac 09 2b 7a mov %gs:0x7a2b09ac(%rip),%eax # 0x7a2b09e2
36: 85 c0 test %eax,%eax
38: 74 0a je 0x44
3a: 5b pop %rbx
3b: 5d pop %rbp
3c: c3 retq
3d: e8 .byte 0xe8
3e: e0 d4 loopne 0x14