diff options
| author | Kees Cook <[email protected]> | 2022-12-02 12:59:11 -0800 |
|---|---|---|
| committer | Kees Cook <[email protected]> | 2022-12-02 13:04:39 -0800 |
| commit | de92f65719cd672f4b48397540b9f9eff67eca40 (patch) | |
| tree | 0e389c36fc7652f61d8b9133833d8d0d358ae17f | |
| parent | 9db89b41117024f80b38b15954017fb293133364 (diff) | |
exit: Allow oops_limit to be disabled
In preparation for keeping oops_limit logic in sync with warn_limit,
have oops_limit == 0 disable checking the Oops counter.
Cc: Jann Horn <[email protected]>
Cc: Jonathan Corbet <[email protected]>
Cc: Andrew Morton <[email protected]>
Cc: Baolin Wang <[email protected]>
Cc: "Jason A. Donenfeld" <[email protected]>
Cc: Eric Biggers <[email protected]>
Cc: Huang Ying <[email protected]>
Cc: "Eric W. Biederman" <[email protected]>
Cc: Arnd Bergmann <[email protected]>
Cc: [email protected]
Signed-off-by: Kees Cook <[email protected]>
| -rw-r--r-- | Documentation/admin-guide/sysctl/kernel.rst | 5 | ||||
| -rw-r--r-- | kernel/exit.c | 2 |
2 files changed, 4 insertions, 3 deletions
diff --git a/Documentation/admin-guide/sysctl/kernel.rst b/Documentation/admin-guide/sysctl/kernel.rst index 09f3fb2f8585..a31d8d81ea07 100644 --- a/Documentation/admin-guide/sysctl/kernel.rst +++ b/Documentation/admin-guide/sysctl/kernel.rst @@ -671,8 +671,9 @@ oops_limit ========== Number of kernel oopses after which the kernel should panic when -``panic_on_oops`` is not set. Setting this to 0 or 1 has the same effect -as setting ``panic_on_oops=1``. +``panic_on_oops`` is not set. Setting this to 0 disables checking +the count. Setting this to 1 has the same effect as setting +``panic_on_oops=1``. The default value is 10000. osrelease, ostype & version diff --git a/kernel/exit.c b/kernel/exit.c index dc1a32149f94..deffb8e4b1b2 100644 --- a/kernel/exit.c +++ b/kernel/exit.c @@ -954,7 +954,7 @@ void __noreturn make_task_dead(int signr) * To make sure this can't happen, place an upper bound on how often the * kernel may oops without panic(). */ - if (atomic_inc_return(&oops_count) >= READ_ONCE(oops_limit)) + if (atomic_inc_return(&oops_count) >= READ_ONCE(oops_limit) && oops_limit) panic("Oopsed too often (kernel.oops_limit is %d)", oops_limit); /* |