From: syzbot <syzbot+2ca247c2d60c7023de7f@syzkaller.appspotmail.com>
To: ath9k-devel@qca.qualcomm.com, davem@davemloft.net,
glider@google.com, kuba@kernel.org, kvalo@codeaurora.org,
linux-kernel@vger.kernel.org, linux-wireless@vger.kernel.org,
netdev@vger.kernel.org, syzkaller-bugs@googlegroups.com
Subject: KMSAN: uninit-value in ath9k_htc_rx_msg
Date: Sun, 09 Aug 2020 09:27:18 -0700 [thread overview]
Message-ID: <000000000000c98a7f05ac744f53@google.com> (raw)
Hello,
syzbot found the following issue on:
HEAD commit: ce8056d1 wip: changed copy_from_user where instrumented
git tree: https://github.com/google/kmsan.git master
console output: https://syzkaller.appspot.com/x/log.txt?x=130c562c900000
kernel config: https://syzkaller.appspot.com/x/.config?x=3afe005fb99591f
dashboard link: https://syzkaller.appspot.com/bug?extid=2ca247c2d60c7023de7f
compiler: clang version 10.0.0 (https://github.com/llvm/llvm-project/ c2443155a0fb245c8f17f2c1c72b6ea391e86e81)
userspace arch: i386
Unfortunately, I don't have any reproducer for this issue yet.
IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+2ca247c2d60c7023de7f@syzkaller.appspotmail.com
=====================================================
BUG: KMSAN: uninit-value in ath9k_htc_rx_msg+0x28f/0x1f50 drivers/net/wireless/ath/ath9k/htc_hst.c:410
CPU: 0 PID: 4867 Comm: systemd-udevd Not tainted 5.8.0-rc5-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+0x21c/0x280 lib/dump_stack.c:118
kmsan_report+0xf7/0x1e0 mm/kmsan/kmsan_report.c:121
__msan_warning+0x58/0xa0 mm/kmsan/kmsan_instr.c:215
ath9k_htc_rx_msg+0x28f/0x1f50 drivers/net/wireless/ath/ath9k/htc_hst.c:410
ath9k_hif_usb_rx_stream drivers/net/wireless/ath/ath9k/hif_usb.c:638 [inline]
ath9k_hif_usb_rx_cb+0x1841/0x1d10 drivers/net/wireless/ath/ath9k/hif_usb.c:671
__usb_hcd_giveback_urb+0x687/0x870 drivers/usb/core/hcd.c:1650
usb_hcd_giveback_urb+0x1cb/0x730 drivers/usb/core/hcd.c:1716
dummy_timer+0xd98/0x71c0 drivers/usb/gadget/udc/dummy_hcd.c:1967
call_timer_fn+0x226/0x550 kernel/time/timer.c:1404
expire_timers+0x4fc/0x780 kernel/time/timer.c:1449
__run_timers+0xaf4/0xd30 kernel/time/timer.c:1773
run_timer_softirq+0x2d/0x50 kernel/time/timer.c:1786
__do_softirq+0x2ea/0x7f5 kernel/softirq.c:293
asm_call_on_stack+0xf/0x20 arch/x86/entry/entry_64.S:711
</IRQ>
__run_on_irqstack arch/x86/include/asm/irq_stack.h:23 [inline]
run_on_irqstack_cond arch/x86/include/asm/irq_stack.h:50 [inline]
do_softirq_own_stack+0x7c/0xa0 arch/x86/kernel/irq_64.c:77
invoke_softirq kernel/softirq.c:390 [inline]
__irq_exit_rcu+0x226/0x270 kernel/softirq.c:420
irq_exit_rcu+0xe/0x10 kernel/softirq.c:432
sysvec_apic_timer_interrupt+0x107/0x130 arch/x86/kernel/apic/apic.c:1091
asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:593
RIP: 0010:tomoyo_path_matches_pattern+0xba/0x4d0 security/tomoyo/util.c:920
Code: 48 89 45 a0 8b 02 89 45 d0 4d 85 f6 4c 8b ad 70 ff ff ff 0f 85 c6 01 00 00 4c 89 7d b8 41 0f b7 44 24 0c 48 89 45 80 48 89 df <e8> 71 fd ea fc 49 8d 5c 24 0f 0f b7 00 48 89 45 88 8b 02 89 45 a8
RSP: 0018:ffff888111c0f858 EFLAGS: 00000246
RAX: 0000000000000015 RBX: ffff888111d41fe4 RCX: 0000000111941fd8
RDX: ffff888111941fd8 RSI: 0000000000000440 RDI: ffff888111d41fe4
RBP: ffff888111c0f8e8 R08: ffffea000000000f R09: ffff88812fffa000
R10: 0000000000000003 R11: ffff88811a320000 R12: ffff888111d41fd8
R13: ffff88811a3209d8 R14: 0000000000000000 R15: ffff888111c0fab0
tomoyo_compare_name_union security/tomoyo/file.c:87 [inline]
tomoyo_check_path_acl+0x272/0x360 security/tomoyo/file.c:260
tomoyo_check_acl+0x239/0x5a0 security/tomoyo/domain.c:175
tomoyo_path_permission security/tomoyo/file.c:586 [inline]
tomoyo_path_perm+0x83f/0xc60 security/tomoyo/file.c:838
tomoyo_inode_getattr+0x54/0x60 security/tomoyo/tomoyo.c:123
security_inode_getattr+0x144/0x280 security/security.c:1278
vfs_getattr fs/stat.c:121 [inline]
vfs_statx+0x34c/0x940 fs/stat.c:206
vfs_lstat include/linux/fs.h:3302 [inline]
__do_sys_newlstat fs/stat.c:374 [inline]
__se_sys_newlstat+0xce/0x920 fs/stat.c:368
__x64_sys_newlstat+0x3e/0x60 fs/stat.c:368
do_syscall_64+0xad/0x160 arch/x86/entry/common.c:386
entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x7f72dd774335
Code: Bad RIP value.
RSP: 002b:00007ffeb28263b8 EFLAGS: 00000246 ORIG_RAX: 0000000000000006
RAX: ffffffffffffffda RBX: 000055a2c06613f0 RCX: 00007f72dd774335
RDX: 00007ffeb28263f0 RSI: 00007ffeb28263f0 RDI: 000055a2c06603f0
RBP: 00007ffeb28264b0 R08: 00007f72dda33178 R09: 0000000000001010
R10: 0000000000000020 R11: 0000000000000246 R12: 000055a2c06603f0
R13: 000055a2c0660410 R14: 000055a2c064ce5b R15: 000055a2c064ce60
Uninit was created at:
kmsan_save_stack_with_flags+0x3c/0x90 mm/kmsan/kmsan.c:144
kmsan_internal_alloc_meta_for_pages mm/kmsan/kmsan_shadow.c:269 [inline]
kmsan_alloc_page+0xc5/0x1a0 mm/kmsan/kmsan_shadow.c:293
__alloc_pages_nodemask+0xdf0/0x1030 mm/page_alloc.c:4889
__alloc_pages include/linux/gfp.h:509 [inline]
__alloc_pages_node include/linux/gfp.h:522 [inline]
alloc_pages_node include/linux/gfp.h:536 [inline]
__page_frag_cache_refill mm/page_alloc.c:4964 [inline]
page_frag_alloc+0x35b/0x880 mm/page_alloc.c:4994
__netdev_alloc_skb+0x2a8/0xc90 net/core/skbuff.c:451
__dev_alloc_skb include/linux/skbuff.h:2813 [inline]
ath9k_hif_usb_rx_stream drivers/net/wireless/ath/ath9k/hif_usb.c:620 [inline]
ath9k_hif_usb_rx_cb+0xe5a/0x1d10 drivers/net/wireless/ath/ath9k/hif_usb.c:671
__usb_hcd_giveback_urb+0x687/0x870 drivers/usb/core/hcd.c:1650
usb_hcd_giveback_urb+0x1cb/0x730 drivers/usb/core/hcd.c:1716
dummy_timer+0xd98/0x71c0 drivers/usb/gadget/udc/dummy_hcd.c:1967
call_timer_fn+0x226/0x550 kernel/time/timer.c:1404
expire_timers+0x4fc/0x780 kernel/time/timer.c:1449
__run_timers+0xaf4/0xd30 kernel/time/timer.c:1773
run_timer_softirq+0x2d/0x50 kernel/time/timer.c:1786
__do_softirq+0x2ea/0x7f5 kernel/softirq.c:293
=====================================================
---
This report is generated by a bot. It may contain errors.
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next reply other threads:[~2020-08-09 16:28 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-08-09 16:27 syzbot [this message]
2020-08-13 3:32 ` KMSAN: uninit-value in ath9k_htc_rx_msg syzbot
[not found] ` <a142d63c-7810-40ff-9c24-7160c63bafebn@googlegroups.com>
2022-08-24 13:30 ` Alexander Potapenko
2022-08-25 14:34 ` Tetsuo Handa
2022-08-25 15:09 ` Alexander Potapenko
2022-08-25 15:55 ` Toke Høiland-Jørgensen
2022-08-29 5:36 ` Kalle Valo
2022-08-26 1:35 ` Tetsuo Handa
2022-08-26 8:38 ` Alexander Potapenko
2022-08-28 10:44 ` Phillip Potter
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