[tor-bugs] #24198 [Core Tor/Tor]: (Sandbox) Caught a bad syscall attempt (syscall kill)

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#24198: (Sandbox) Caught a bad syscall attempt (syscall kill)
--------------------------+------------------------------------
 Reporter:  asn           |          Owner:  (none)
     Type:  defect        |         Status:  new
 Priority:  Medium        |      Milestone:  Tor: 0.3.2.x-final
Component:  Core Tor/Tor  |        Version:  Tor: 0.3.2.4-alpha
 Severity:  Normal        |     Resolution:
 Keywords:                |  Actual Points:
Parent ID:                |         Points:  0.1
 Reviewer:                |        Sponsor:
--------------------------+------------------------------------

Comment (by dgoulet):

 strace output in my case:

 {{{
 19360 openat(AT_FDCWD, "/etc/hosts", O_RDONLY|O_CLOEXEC) = 257
 19360 --- SIGSYS {si_signo=SIGSYS, si_code=SYS_SECCOMP,
 si_call_addr=0x7f7d90ab667e, si_syscall=__NR_openat,
 si_arch=AUDIT_ARCH_X86_64} ---
 }}}

 It is the first file being opened _after_ the seccomp sandbox has been
 applied. Our sandbox code only considers "open()" to touch that file:

 {{{
   OPEN("/etc/hosts");
 }}}

--
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/24198#comment:2>
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