2018-06-23 09:24:23

by Sebastian Ott

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Subject: panic with 9facc33687 "bpf: reject any prog that failed read-only lock"

With commit 9facc33687 ("bpf: reject any prog that failed read-only lock")
s390 panics:

? 9.090218! specification exception: 0006 ilc:1 ?#1! PREEMPT SMP
? 9.090257! Modules linked in:
? 9.090277! CPU: 2 PID: 162 Comm: (journald) Not tainted 4.18.0-rc1-00189-g894b8c000ae6 #256
? 9.090285! Hardware name: IBM 3906 M04 704 (LPAR)
? 9.090296! Krnl PSW : (____ptrval____) (____ptrval____) (0x3ff80002da1)
? 9.090320! R:0 T:1 IO:1 EX:1 Key:0 M:1 W:0 P:0 AS:3 CC:1 PM:0 RI:0 EA:3
? 9.090336! Krnl GPRS: 0000000000000000 000003e0887f3000 00000000c15dbda8 000003e0887f3038
? 9.090346! 000003ff80002d9f 0000000000000001 000003ff92f28f50 000002aa1b416350
? 9.090355! 0000000000000570 00000000c15dbe28 00000000c15dbda8 000000007fff0000
? 9.090364! 00000000c11ac178 0000000000002738 000000000024c8d2 00000000c15dbd08
? 9.090376! Krnl Code: Bad PSW.
? 9.090387! Call Trace:
? 9.090401! (?<000000000024c8b8>! seccomp_run_filters+0x50/0xc0)
? 9.090412! ?<000000000024cb38>! __seccomp_filter+0x40/0x478
? 9.090426! ?<0000000000108362>! do_syscall_trace_enter+0xe2/0x310
? 9.090439! ?<0000000000baec9c>! system_call+0x284/0x2d0
? 9.090453! INFO: lockdep is turned off.
? 9.090464! Last Breaking-Event-Address:
? 9.090475! ?<000000000024c8d0>! seccomp_run_filters+0x68/0xc0
? 9.090491!
? 9.090503! Kernel panic - not syncing: Fatal exception: panic_on_oops

config and bisect log attached.

Regards,
Sebastian

Attachments:
bisect.log (1.51 kB)
 config (70.04 kB)
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2018-06-23 09:30:34

by Daniel Borkmann

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Subject: Re: panic with 9facc33687 "bpf: reject any prog that failed read-only lock"

On 06/23/2018 11:23 AM, Sebastian Ott wrote:
> With commit 9facc33687 ("bpf: reject any prog that failed read-only lock")
> s390 panics:

Sorry about that, this is fixed by:

https://git.kernel.org/pub/scm/linux/kernel/git/davem/net.git/commit/?id=9262478220eac908ae6e168c3df2c453c87e2da3

2018-06-23 09:47:12

by Sebastian Ott

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Subject: Re: panic with 9facc33687 "bpf: reject any prog that failed read-only lock"

On Sat, 23 Jun 2018, Daniel Borkmann wrote:
> On 06/23/2018 11:23 AM, Sebastian Ott wrote:
> > With commit 9facc33687 ("bpf: reject any prog that failed read-only lock")
> > s390 panics:
>
> Sorry about that, this is fixed by:
>
> https://git.kernel.org/pub/scm/linux/kernel/git/davem/net.git/commit/?id=9262478220eac908ae6e168c3df2c453c87e2da3

That one helped. Thanks!

Sebastian