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KASAN: slab-out-of-bounds Write in ath9k_htc_rx_msg

Status: closed as dup on 2020/06/12 13:03
Subsystems: wireless
[Documentation on labels]
Reported-by: syzbot+694d40a36a6452d77f36@syzkaller.appspotmail.com
First crash: 1825d, last: 1746d
▶ ▼ Duplicate of
Title Repro Cause bisect Fix bisect Count Last Reported
KASAN: use-after-free Write in ath9k_htc_rx_msg wireless C 93 1747d 1824d
▶ ▼ Discussions (1)
Title Replies (including bot) Last reply
KASAN: slab-out-of-bounds Write in ath9k_htc_rx_msg 1 (2) 2020/06/12 13:03

Sample crash report:
==================================================================
BUG: KASAN: slab-out-of-bounds in htc_process_conn_rsp drivers/net/wireless/ath/ath9k/htc_hst.c:131 [inline]
BUG: KASAN: slab-out-of-bounds in ath9k_htc_rx_msg+0xa25/0xaf0 drivers/net/wireless/ath/ath9k/htc_hst.c:443
Write of size 2 at addr ffff8881cc774420 by task swapper/1/0

CPU: 1 PID: 0 Comm: swapper/1 Not tainted 5.7.0-rc6-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 <IRQ>
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0xef/0x16e lib/dump_stack.c:118
 print_address_description.constprop.0.cold+0xd3/0x415 mm/kasan/report.c:382
 __kasan_report.cold+0x37/0x7d mm/kasan/report.c:511
 kasan_report+0x33/0x50 mm/kasan/common.c:625
 htc_process_conn_rsp drivers/net/wireless/ath/ath9k/htc_hst.c:131 [inline]
 ath9k_htc_rx_msg+0xa25/0xaf0 drivers/net/wireless/ath/ath9k/htc_hst.c:443
 ath9k_hif_usb_reg_in_cb+0x1c0/0x630 drivers/net/wireless/ath/ath9k/hif_usb.c:718
 __usb_hcd_giveback_urb+0x29a/0x550 drivers/usb/core/hcd.c:1650
 usb_hcd_giveback_urb+0x368/0x420 drivers/usb/core/hcd.c:1716
 dummy_timer+0x125e/0x32b4 drivers/usb/gadget/udc/dummy_hcd.c:1967
 call_timer_fn+0x1ac/0x700 kernel/time/timer.c:1405
 expire_timers kernel/time/timer.c:1450 [inline]
 __run_timers kernel/time/timer.c:1774 [inline]
 __run_timers kernel/time/timer.c:1741 [inline]
 run_timer_softirq+0x5f9/0x1500 kernel/time/timer.c:1787
 __do_softirq+0x21e/0x9aa kernel/softirq.c:292
 invoke_softirq kernel/softirq.c:373 [inline]
 irq_exit+0x178/0x1a0 kernel/softirq.c:413
 exiting_irq arch/x86/include/asm/apic.h:546 [inline]
 smp_apic_timer_interrupt+0x141/0x540 arch/x86/kernel/apic/apic.c:1140
 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:829
 </IRQ>
RIP: 0010:default_idle+0x28/0x300 arch/x86/kernel/process.c:698
Code: cc cc 41 56 41 55 65 44 8b 2d 94 3f 6b 7a 41 54 55 53 0f 1f 44 00 00 e8 16 28 af fb e9 07 00 00 00 0f 00 2d 7a e1 4b 00 fb f4 <65> 44 8b 2d 70 3f 6b 7a 0f 1f 44 00 00 5b 5d 41 5c 41 5d 41 5e c3
RSP: 0018:ffff8881da227da8 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13
RAX: 0000000000000007 RBX: ffff8881da20b180 RCX: 0000000000000000
RDX: 0000000000000000 RSI: 0000000000000006 RDI: ffff8881da20b9fc
RBP: ffffed103b441630 R08: ffff8881da20b180 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000001
R13: 0000000000000001 R14: ffffffff87e88c40 R15: 0000000000000000
 cpuidle_idle_call kernel/sched/idle.c:154 [inline]
 do_idle+0x3e0/0x500 kernel/sched/idle.c:269
 cpu_startup_entry+0x14/0x20 kernel/sched/idle.c:361
 start_secondary+0x2ae/0x390 arch/x86/kernel/smpboot.c:268
 secondary_startup_64+0xb6/0xc0 arch/x86/kernel/head_64.S:242

Allocated by task 0:
(stack is not available)

Freed by task 0:
(stack is not available)

The buggy address belongs to the object at ffff8881cc774000
 which belongs to the cache kmalloc-2k of size 2048
The buggy address is located 1056 bytes inside of
 2048-byte region [ffff8881cc774000, ffff8881cc774800)
The buggy address belongs to the page:
page:ffffea000731dc00 refcount:1 mapcount:0 mapping:00000000e3327b97 index:0x0 head:ffffea000731dc00 order:3 compound_mapcount:0 compound_pincount:0
flags: 0x200000000010200(slab|head)
raw: 0200000000010200 dead000000000100 dead000000000122 ffff8881da00c000
raw: 0000000000000000 0000000080080008 00000001ffffffff 0000000000000000
page dumped because: kasan: bad access detected

Memory state around the buggy address:
 ffff8881cc774300: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
 ffff8881cc774380: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
>ffff8881cc774400: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
                               ^
 ffff8881cc774480: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
 ffff8881cc774500: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
==================================================================

Crashes (393):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2020/05/30 08:33 https://github.com/google/kasan.git usb-fuzzer 2089c6ed5a17 954bd312 .config console log report syz C ci2-upstream-usb
2020/05/29 02:32 https://github.com/google/kasan.git usb-fuzzer d19c64b3d097 d19ed305 .config console log report syz C ci2-upstream-usb
2020/05/29 01:22 https://github.com/google/kasan.git usb-fuzzer d19c64b3d097 d19ed305 .config console log report syz C ci2-upstream-usb
2020/03/28 18:31 https://github.com/google/kasan.git usb-fuzzer 0fa84af850a4 f1ebdfba .config console log report syz C ci2-upstream-usb
2020/03/28 17:13 https://github.com/google/kasan.git usb-fuzzer 0fa84af850a4 f1ebdfba .config console log report syz C ci2-upstream-usb
2020/03/26 03:51 https://github.com/google/kasan.git usb-fuzzer e17994d1e7b1 e8e6c7d2 .config console log report syz C ci2-upstream-usb
2020/03/26 01:21 https://github.com/google/kasan.git usb-fuzzer e17994d1e7b1 e8e6c7d2 .config console log report syz C ci2-upstream-usb
2020/03/26 00:46 https://github.com/google/kasan.git usb-fuzzer e17994d1e7b1 e8e6c7d2 .config console log report syz C ci2-upstream-usb
2020/03/26 00:31 https://github.com/google/kasan.git usb-fuzzer e17994d1e7b1 e8e6c7d2 .config console log report syz C ci2-upstream-usb
2020/06/12 12:00 https://github.com/google/kasan.git usb-fuzzer 2089c6ed5a17 819b58b0 .config console log report ci2-upstream-usb
2020/06/12 09:36 https://github.com/google/kasan.git usb-fuzzer 2089c6ed5a17 819b58b0 .config console log report ci2-upstream-usb
2020/06/12 02:22 https://github.com/google/kasan.git usb-fuzzer 2089c6ed5a17 1beaee21 .config console log report ci2-upstream-usb
2020/06/11 23:59 https://github.com/google/kasan.git usb-fuzzer 2089c6ed5a17 1beaee21 .config console log report ci2-upstream-usb
2020/06/11 22:42 https://github.com/google/kasan.git usb-fuzzer 2089c6ed5a17 1beaee21 .config console log report ci2-upstream-usb
2020/06/11 15:01 https://github.com/google/kasan.git usb-fuzzer 2089c6ed5a17 3ab7a05a .config console log report ci2-upstream-usb
2020/06/11 13:49 https://github.com/google/kasan.git usb-fuzzer 2089c6ed5a17 3ab7a05a .config console log report ci2-upstream-usb
2020/06/11 12:05 https://github.com/google/kasan.git usb-fuzzer 2089c6ed5a17 3ab7a05a .config console log report ci2-upstream-usb
2020/06/11 08:44 https://github.com/google/kasan.git usb-fuzzer 2089c6ed5a17 3ab7a05a .config console log report ci2-upstream-usb
2020/06/11 06:58 https://github.com/google/kasan.git usb-fuzzer 2089c6ed5a17 3ab7a05a .config console log report ci2-upstream-usb
2020/06/11 04:55 https://github.com/google/kasan.git usb-fuzzer 2089c6ed5a17 3ab7a05a .config console log report ci2-upstream-usb
2020/06/10 23:12 https://github.com/google/kasan.git usb-fuzzer 2089c6ed5a17 5caaad3a .config console log report ci2-upstream-usb
2020/06/10 21:59 https://github.com/google/kasan.git usb-fuzzer 2089c6ed5a17 5caaad3a .config console log report ci2-upstream-usb
2020/06/10 18:00 https://github.com/google/kasan.git usb-fuzzer 2089c6ed5a17 5caaad3a .config console log report ci2-upstream-usb
2020/06/10 16:39 https://github.com/google/kasan.git usb-fuzzer 2089c6ed5a17 5caaad3a .config console log report ci2-upstream-usb
2020/06/10 13:10 https://github.com/google/kasan.git usb-fuzzer 2089c6ed5a17 5caaad3a .config console log report ci2-upstream-usb
2020/06/10 10:48 https://github.com/google/kasan.git usb-fuzzer 2089c6ed5a17 860c4de9 .config console log report ci2-upstream-usb
2020/06/10 08:27 https://github.com/google/kasan.git usb-fuzzer 2089c6ed5a17 860c4de9 .config console log report ci2-upstream-usb
2020/06/10 06:30 https://github.com/google/kasan.git usb-fuzzer 2089c6ed5a17 860c4de9 .config console log report ci2-upstream-usb
2020/06/10 03:04 https://github.com/google/kasan.git usb-fuzzer 2089c6ed5a17 860c4de9 .config console log report ci2-upstream-usb
2020/06/10 00:59 https://github.com/google/kasan.git usb-fuzzer 2089c6ed5a17 860c4de9 .config console log report ci2-upstream-usb
2020/06/10 00:42 https://github.com/google/kasan.git usb-fuzzer 2089c6ed5a17 860c4de9 .config console log report ci2-upstream-usb
2020/06/09 22:54 https://github.com/google/kasan.git usb-fuzzer 2089c6ed5a17 092934c1 .config console log report ci2-upstream-usb
2020/06/09 21:36 https://github.com/google/kasan.git usb-fuzzer 2089c6ed5a17 092934c1 .config console log report ci2-upstream-usb
2020/06/09 19:10 https://github.com/google/kasan.git usb-fuzzer 2089c6ed5a17 092934c1 .config console log report ci2-upstream-usb
2020/06/09 13:47 https://github.com/google/kasan.git usb-fuzzer 2089c6ed5a17 092934c1 .config console log report ci2-upstream-usb
2020/06/09 10:49 https://github.com/google/kasan.git usb-fuzzer 2089c6ed5a17 0d60b78a .config console log report ci2-upstream-usb
2020/06/09 08:02 https://github.com/google/kasan.git usb-fuzzer 2089c6ed5a17 0d60b78a .config console log report ci2-upstream-usb
2020/06/09 06:21 https://github.com/google/kasan.git usb-fuzzer 2089c6ed5a17 0d60b78a .config console log report ci2-upstream-usb
2020/06/09 03:41 https://github.com/google/kasan.git usb-fuzzer 2089c6ed5a17 0d60b78a .config console log report ci2-upstream-usb
2020/06/08 21:18 https://github.com/google/kasan.git usb-fuzzer 2089c6ed5a17 7604bb03 .config console log report ci2-upstream-usb
2020/06/08 17:11 https://github.com/google/kasan.git usb-fuzzer 2089c6ed5a17 7604bb03 .config console log report ci2-upstream-usb
2020/06/08 15:09 https://github.com/google/kasan.git usb-fuzzer 2089c6ed5a17 7604bb03 .config console log report ci2-upstream-usb
2020/06/08 14:53 https://github.com/google/kasan.git usb-fuzzer 2089c6ed5a17 7604bb03 .config console log report ci2-upstream-usb
2020/06/08 11:41 https://github.com/google/kasan.git usb-fuzzer 2089c6ed5a17 7604bb03 .config console log report ci2-upstream-usb
2020/06/08 06:36 https://github.com/google/kasan.git usb-fuzzer 2089c6ed5a17 7751efd0 .config console log report ci2-upstream-usb
2020/06/08 00:43 https://github.com/google/kasan.git usb-fuzzer 2089c6ed5a17 7751efd0 .config console log report ci2-upstream-usb
2020/06/07 19:38 https://github.com/google/kasan.git usb-fuzzer 2089c6ed5a17 2c2b926c .config console log report ci2-upstream-usb
2020/06/07 17:18 https://github.com/google/kasan.git usb-fuzzer 2089c6ed5a17 2c2b926c .config console log report ci2-upstream-usb
2020/06/07 13:51 https://github.com/google/kasan.git usb-fuzzer 2089c6ed5a17 2c2b926c .config console log report ci2-upstream-usb
2020/06/07 11:15 https://github.com/google/kasan.git usb-fuzzer 2089c6ed5a17 2c2b926c .config console log report ci2-upstream-usb
2020/06/07 07:45 https://github.com/google/kasan.git usb-fuzzer 2089c6ed5a17 e6b89e4e .config console log report ci2-upstream-usb
2020/06/07 04:28 https://github.com/google/kasan.git usb-fuzzer 2089c6ed5a17 e6b89e4e .config console log report ci2-upstream-usb
2020/03/26 00:31 https://github.com/google/kasan.git usb-fuzzer e17994d1e7b1 e8e6c7d2 .config console log report ci2-upstream-usb
* Struck through repros no longer work on HEAD.