970562 - [Gonk][seccomp] seccomp violation: __NR_sched_getscheduler

Status: RESOLVED FIXED

(Firefox OS Graveyard :: GonkIntegration, defect)

Description

[Rob Fletcher [:omerta]]

When using the Camera app to take a picture, we get the following seccomp violation:
E/Sandbox ( 2013): seccomp sandbox violation: pid 2013, syscall 157, args 0 0 1 0 5 10000.  Killing process.

syscall 157 appears to be __NR_sched_getscheduler

Device: Nexus 4
Branch: 1.4.0.0-prerelease
Git commit info: a504e2e0
Gecko: 893735910eb5db1d9b69575160d0e53d3be7402a
Gaia: a504e2e01335167275e47f35ddc5b89bb858a892

Comment 1

[Paul Theriault [:pauljt] (no longer reading bugmail)]

Note taking pictures seems to be ok on Buri, probably something nexus specific?

Comment 2

[Rob Fletcher [:omerta]]

Opening up for visibility.

Comment 3

[Rob Fletcher [:omerta]]

I also get this seccomp violation when I try to send SMS messages

Comment 4

[Jed Davis [:jld] ⟨⏰|UTC-7⟩ ⟦he/him⟧]

(In reply to Rob Fletcher [:omerta] from comment #0)
> Gecko: 893735910eb5db1d9b69575160d0e53d3be7402a

That version has the patches that should give us a minidump for seccomp violations.  (Reproducing with gdb attached also works, and might be easier if it's a local build.)

Comment 5

[Jed Davis [:jld] ⟨⏰|UTC-7⟩ ⟦he/him⟧]

Incidentally, we already have sched_setscheduler (as well as sched_get_priority_m{in,ax}), so adding sched_getscheduler to the whitelist in gecko/security/sandbox/linux/seccomp_filter.h shouldn't be a problem.

Comment 6

[Jed Davis [:jld] ⟨⏰|UTC-7⟩ ⟦he/him⟧]

Attachment: bug970562-seccomp-sched_getscheduler-hg0.diff

Tested on Nexus 4.

Comment 7

[Jed Davis [:jld] ⟨⏰|UTC-7⟩ ⟦he/him⟧]

https://hg.mozilla.org/integration/b2g-inbound/rev/b52309ff5fe7

Comment 8

[Phil Ringnalda (:philor)]

https://hg.mozilla.org/mozilla-central/rev/b52309ff5fe7