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From: Thomas Gleixner <tglx@linutronix.de>
To: Linus Torvalds <torvalds@linux-foundation.org>
Cc: linux-kernel@vger.kernel.org, x86@kernel.org
Subject: [GIT pull] core/urgent for v5.18-rc6
Date: Sun,  8 May 2022 14:05:19 +0200 (CEST)	[thread overview]
Message-ID: <165201148069.536527.1960632033331546251.tglx@xen13> (raw)

Linus,

please pull the latest core/urgent branch from:

   git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git core-urgent-2022-05-08

up to:  2667ed10d9f0: mm: Fix PASID use-after-free issue


A single bugfix for the PASID management code, which freed the PASID too
early. The PASID needs to be tied to the mm lifetime, not to the address
space lifetime.

Thanks,

	tglx

------------------>
Fenghua Yu (1):
      mm: Fix PASID use-after-free issue


 kernel/fork.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/kernel/fork.c b/kernel/fork.c
index 9796897560ab..35a3beff140b 100644
--- a/kernel/fork.c
+++ b/kernel/fork.c
@@ -792,6 +792,7 @@ void __mmdrop(struct mm_struct *mm)
 	mmu_notifier_subscriptions_destroy(mm);
 	check_mm(mm);
 	put_user_ns(mm->user_ns);
+	mm_pasid_drop(mm);
 	free_mm(mm);
 }
 EXPORT_SYMBOL_GPL(__mmdrop);
@@ -1190,7 +1191,6 @@ static inline void __mmput(struct mm_struct *mm)
 	}
 	if (mm->binfmt)
 		module_put(mm->binfmt->module);
-	mm_pasid_drop(mm);
 	mmdrop(mm);
 }
 


             reply	other threads:[~2022-05-08 12:05 UTC|newest]

Thread overview: 23+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-05-08 12:05 Thomas Gleixner [this message]
2022-05-08 12:05 ` [GIT pull] irq/urgent for v5.18-rc6 Thomas Gleixner
2022-05-08 18:40   ` pr-tracker-bot
2022-05-08 12:05 ` [GIT pull] locking/urgent " Thomas Gleixner
2022-05-08 18:40   ` pr-tracker-bot
2022-05-08 12:05 ` [GIT pull] timers/urgent " Thomas Gleixner
2022-05-08 18:40   ` pr-tracker-bot
2022-05-08 12:07 ` [GIT pull] x86/urgent " Thomas Gleixner
2022-05-08 18:40   ` pr-tracker-bot
2022-05-08 18:00 ` [GIT pull] core/urgent " Linus Torvalds
2022-05-08 18:09   ` Linus Torvalds
2022-05-08 18:36     ` Linus Torvalds
2022-05-09 15:02       ` Jean-Philippe Brucker
2022-05-10 11:27   ` Link: tag and links to submission and reports (was: Re: [GIT pull] core/urgent for v5.18-rc6) Thorsten Leemhuis
2022-05-11  8:37     ` Borislav Petkov
2022-05-11 13:48       ` Michael Ellerman
2022-05-11 15:50       ` Theodore Ts'o
2022-05-11 15:55         ` Linus Torvalds
2022-05-11 19:35           ` Borislav Petkov
2022-05-12  8:43             ` Thorsten Leemhuis
2022-08-04  9:29               ` Borislav Petkov
2022-05-11 22:37           ` Theodore Ts'o
2022-05-08 18:40 ` [GIT pull] core/urgent for v5.18-rc6 pr-tracker-bot

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