Description

assignee = None
closed_at = None
created_at = <Date 2022-02-27.11:26:00.251>
labels = ['expert-C-API', 'type-bug']
title = 'Odd handling of signal raised if an illegal syscall is attempted on Android'
updated_at = <Date 2022-02-27.11:26:00.251>
user = 'https://github.com/mr-nfamous'

activity = <Date 2022-02-27.11:26:00.251>
actor = 'bup'
assignee = 'none'
closed = False
closed_date = None
closer = None
components = ['C API']
creation = <Date 2022-02-27.11:26:00.251>
creator = 'bup'
dependencies = []
files = []
hgrepos = []
issue_num = 46872
keywords = []
message_count = 1.0
messages = ['414148']
nosy_count = 1.0
nosy_names = ['bup']
pr_nums = []
priority = 'normal'
resolution = None
stage = None
status = 'open'
superseder = None
type = 'behavior'
url = 'https://bugs.python.org/issue46872'
versions = []

Activity

1. mr-nfamous commented on Feb 27, 2022

   

   mr-nfamousmannequin

   on Feb 27, 2022

   MannequinAuthor

   More actions

   On Android, the following calls generate a SIGSYS signal that is neither blocked by pthread_sigmask(SIG_BLOCK, {SIGSYS}) nor ignored after its handler is set to SIG_IGN:

   (os.chroot(path))
   os.setgid(rgid)
   os.setuid(ruid) 
   (os.setegid(gid))
   os.setregid(rgid, egid)
   os.setreuid(ruid, euid)
   os.setresgid(rgid, egid, sgid)
   time.clock_settime(clock, time)
   time.clock_settime_ns(clock, time)
   (socket.sethostname(name))
   

   On the other hand, signal(SIGSYS, lambda s, p: None) will catch the signal, but based on frame it receives (None), I suspect this is a coincidence. Also, the functions with parenthesized names in that list raise the equivalent of OSError(0, "Error", "%s"%args[0]).
2. mr-nfamous

   added

   topic-C-API

   type-bugAn unexpected behavior, bug, or errorAn unexpected behavior, bug, or error

   on Feb 27, 2022
3. ezio-melotti

   transferred this issue fromon Apr 10, 2022
4. encukou

   added this to Unsupported platformson Feb 1, 2024
5. mhsmith commented on Mar 6, 2024

   

   mhsmith

   on Mar 6, 2024

   Member

   More actions

   Most of these functions have now been disabled at build time by #115955. The only missing one is socket.sethostname, which I didn't notice because it isn't available until API level 23, and we're building against level 21. I'll fix that in #116426.
6. encukou

   added

   OS-android

   on Mar 20, 2024
7. encukou

   removed this from Unsupported platformson Mar 20, 2024
8. erlend-aasland

   closed this as completedin #116426on Mar 21, 2024

Issue actions