Hello!
This is an experimental semi-automated report about issues detected by
Coverity from a scan of next-20240213 as part of the linux-next scan project:
https://scan.coverity.com/projects/linux-next-weekly-scan
You're getting this email because you were associated with the identified
lines of code (noted below) that were touched by commits:
Sat Feb 10 22:37:25 2024 +0100
3f643cd23510 ("pidfd: allow to override signal scope in pidfd_send_signal()")
Sat Feb 10 22:37:23 2024 +0100
81b9d8ac0640 ("pidfd: change pidfd_send_signal() to respect PIDFD_THREAD")
Coverity reported the following:
*** CID 1583637: (UNINIT)
kernel/signal.c:3963 in __do_sys_pidfd_send_signal()
3957 /* Only allow sending arbitrary signals to yourself. */
3958 ret = -EPERM;
3959 if ((task_pid(current) != pid) &&
3960 (kinfo.si_code >= 0 || kinfo.si_code == SI_TKILL))
3961 goto err;
3962 } else {
vvv CID 1583637: (UNINIT)
vvv Using uninitialized value "type" when calling "prepare_kill_siginfo".
3963 prepare_kill_siginfo(sig, &kinfo, type);
3964 }
3965
3966 if (type == PIDTYPE_PGID)
3967 ret = kill_pgrp_info(sig, &kinfo, pid);
3968 else
kernel/signal.c:3966 in __do_sys_pidfd_send_signal()
3960 (kinfo.si_code >= 0 || kinfo.si_code == SI_TKILL))
3961 goto err;
3962 } else {
3963 prepare_kill_siginfo(sig, &kinfo, type);
3964 }
3965
vvv CID 1583637: (UNINIT)
vvv Using uninitialized value "type".
3966 if (type == PIDTYPE_PGID)
3967 ret = kill_pgrp_info(sig, &kinfo, pid);
3968 else
3969 ret = kill_pid_info_type(sig, &kinfo, pid, type);
3970 err:
3971 fdput(f);
If this is a false positive, please let us know so we can mark it as
such, or teach the Coverity rules to be smarter. If not, please make
sure fixes get into linux-next. :) For patches fixing this, please
include these lines (but double-check the "Fixes" first):
Reported-by: coverity-bot <[email protected]>
Addresses-Coverity-ID: 1583637 ("UNINIT")
Fixes: 3f643cd23510 ("pidfd: allow to override signal scope in pidfd_send_signal()")
Fixes: 81b9d8ac0640 ("pidfd: change pidfd_send_signal() to respect PIDFD_THREAD")
Thanks for your attention!
(Human note: looks like a default case is needed in the switch
statement.)
--
Coverity-bot