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From: Yalagada Pavan Kumar <pavankumaryalagada@gmail.com>
To: syzbot <syzbot+143e0859898751aa8f94@syzkaller.appspotmail.com>
Cc: anna-maria@linutronix.de, frederic@kernel.org,
	linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com,
	tglx@kernel.org
Subject: Re: [syzbot] [kernel?] BUG: sleeping function called from invalid context in posix_cpu_timer_wait_running
Date: Tue, 25 Aug 2026 23:43:31 +0530	[thread overview]
Message-ID: <ao3bSxSAanSRv7TC@user> (raw)
In-Reply-To: <6a8bd336.ae6ddae5.3da009.0074.GAE@google.com>

#syz test: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git 2709dd5ae32f0828f386327c76bba9f39f63a1c6

diff --git a/kernel/time/posix-timers.c b/kernel/time/posix-timers.c
index 436ba794cc0b..5e580b4223de 100644
--- a/kernel/time/posix-timers.c
+++ b/kernel/time/posix-timers.c
@@ -1057,9 +1057,9 @@ static void posix_timer_delete(struct k_itimer *timer)
 
        while (timer->kclock->timer_del(timer) == TIMER_RETRY) {
                guard(rcu)();
-               spin_unlock_irq(&timer->it_lock);
+               spin_unlock_irq_enable(&timer->it_lock);
                timer_wait_running(timer);
-               spin_lock_irq(&timer->it_lock);
+               spin_lock_irq_disable(&timer->it_lock);
        }
 }
 

  parent reply	other threads:[~2026-08-25 18:13 UTC|newest]

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-08-24  5:14 [syzbot] [kernel?] BUG: sleeping function called from invalid context in posix_cpu_timer_wait_running syzbot
2026-08-25 17:49 ` Yalagada Pavan Kumar
2026-08-25 18:02   ` syzbot
2026-08-25 18:13 ` Yalagada Pavan Kumar [this message]
2026-08-25 18:45   ` syzbot

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