From: Will Deacon <will@kernel.org>
To: syzbot <syzbot+45d7c243c006f39dc55a@syzkaller.appspotmail.com>
Cc: a@unstable.cc, b.a.t.m.a.n@lists.open-mesh.org,
catalin.marinas@arm.com, davem@davemloft.net,
johannes@sipsolutions.net, kuba@kernel.org,
linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org, linux-wireless@vger.kernel.org,
mareklindner@neomailbox.ch, netdev@vger.kernel.org,
sw@simonwunderlich.de, syzkaller-bugs@googlegroups.com,
will.deacon@arm.com, zlim.lnx@gmail.com
Subject: Re: WARNING in sta_info_alloc
Date: Tue, 6 Oct 2020 09:16:00 +0100 [thread overview]
Message-ID: <20201006081559.GA25187@willie-the-truck> (raw)
In-Reply-To: <00000000000055e16405b0fc1a90@google.com>
On Tue, Oct 06, 2020 at 01:08:23AM -0700, syzbot wrote:
> Hello,
>
> syzbot found the following issue on:
>
> HEAD commit: 549738f1 Linux 5.9-rc8
> git tree: upstream
> console output: https://syzkaller.appspot.com/x/log.txt?x=15b97ba3900000
> kernel config: https://syzkaller.appspot.com/x/.config?x=c06bcf3cc963d91c
> dashboard link: https://syzkaller.appspot.com/bug?extid=45d7c243c006f39dc55a
> compiler: gcc (GCC) 10.1.0-syz 20200507
> syz repro: https://syzkaller.appspot.com/x/repro.syz?x=12bae9c0500000
> C reproducer: https://syzkaller.appspot.com/x/repro.c?x=1099b1c0500000
>
> The issue was bisected to:
>
> commit 643c332d519bdfbf80d21f40d1c0aa0ccf3ec1cb
> Author: Zi Shen Lim <zlim.lnx@gmail.com>
> Date: Thu Jun 9 04:18:50 2016 +0000
>
> arm64: bpf: optimize LD_ABS, LD_IND
>
> bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=11d44477900000
> final oops: https://syzkaller.appspot.com/x/report.txt?x=13d44477900000
> console output: https://syzkaller.appspot.com/x/log.txt?x=15d44477900000
>
> IMPORTANT: if you fix the issue, please add the following tag to the commit:
> Reported-by: syzbot+45d7c243c006f39dc55a@syzkaller.appspotmail.com
> Fixes: 643c332d519b ("arm64: bpf: optimize LD_ABS, LD_IND")
>
> ------------[ cut here ]------------
> WARNING: CPU: 0 PID: 6879 at net/mac80211/ieee80211_i.h:1447 ieee80211_get_sband net/mac80211/ieee80211_i.h:1447 [inline]
> WARNING: CPU: 0 PID: 6879 at net/mac80211/ieee80211_i.h:1447 sta_info_alloc+0x1900/0x1f90 net/mac80211/sta_info.c:469
> Kernel panic - not syncing: panic_on_warn set ...
> CPU: 0 PID: 6879 Comm: syz-executor071 Not tainted 5.9.0-rc8-syzkaller #0
> Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
> Call Trace:
> __dump_stack lib/dump_stack.c:77 [inline]
> dump_stack+0x198/0x1fd lib/dump_stack.c:118
> panic+0x382/0x7fb kernel/panic.c:231
> __warn.cold+0x20/0x4b kernel/panic.c:600
> report_bug+0x1bd/0x210 lib/bug.c:198
> handle_bug+0x38/0x90 arch/x86/kernel/traps.c:234
> exc_invalid_op+0x14/0x40 arch/x86/kernel/traps.c:254
> asm_exc_invalid_op+0x12/0x20 arch/x86/include/asm/idtentry.h:536
> RIP: 0010:ieee80211_get_sband net/mac80211/ieee80211_i.h:1447 [inline]
The patch fingered by the bisection only affects arm64, but this is an x86
box. So this is clearly bogus.
Will
next prev parent reply other threads:[~2020-10-06 8:16 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-10-06 8:08 WARNING in sta_info_alloc syzbot
2020-10-06 8:16 ` Will Deacon [this message]
2021-07-16 23:07 ` [syzbot] " syzbot
2021-07-21 17:37 ` David Sterba
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