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Message-Id: <201006180308.o5I38O34094551@www262.sakura.ne.jp> Date: Fri, 18 Jun 2010 12:08:24 +0900 From: Tetsuo Handa <penguin-kernel@...ove.SAKURA.ne.jp> To: linux-kernel@...r.kernel.org Cc: dhowells@...hat.com, linux-security-module@...r.kernel.org Subject: [PATCH 2.6.29.6 - 2.6.35-rc3] CRED: Release spinlock before commit_creds(). reparent_to_kthreadd() is calling commit_creds() with tasklist_lock held. But commit_creds() calls key_fsuid_changed()/key_fsgid_changed()/proc_id_connector() which may sleep. Release tasklist_lock before calling commit_creds(). Signed-off-by: Tetsuo Handa <penguin-kernel@...ove.SAKURA.ne.jp> --- kernel/exit.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- security-testing-2.6.orig/kernel/exit.c +++ security-testing-2.6/kernel/exit.c @@ -348,8 +348,8 @@ static void reparent_to_kthreadd(void) sizeof(current->signal->rlim)); atomic_inc(&init_cred.usage); - commit_creds(&init_cred); write_unlock_irq(&tasklist_lock); + commit_creds(&init_cred); } void __set_special_pids(struct pid *pid) -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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