BUG: using smp_processor_id() in preemptible [ADDR] code: syz-executor

BUG: using smp_processor_id() in preemptible [ADDR] code: syz-executor
Status: upstream: reported on 2020/02/05 02:46
Reported-by: syzbot+2836a8b6c02393a157d1@syzkaller.appspotmail.com
First crash: 235d, last: 117d

similar bugs (1):
Kernel	Title	Repro	Bisected	Count	Last	Reported	Patched	Status
upstream	BUG: using smp_processor_id() in preemptible [ADDR] code: syz-executor	C	cause	22297	117d	456d	17/17	fixed on 2020/07/17 17:58

Sample crash report:

bridge1: port 1(bond0) entered blocking state
bridge1: port 1(bond0) entered disabled state
BUG: using smp_processor_id() in preemptible [00000000] code: syz-executor.0/16774
WARNING: can't dereference registers at ffff88821152fce8 for ip apic_timer_interrupt+0x93/0xa0 arch/x86/entry/entry_64.S:793
caller is in_entry_stack+0xd/0x50 arch/x86/kernel/dumpstack.c:50
CPU: 0 PID: 16774 Comm: syz-executor.0 Not tainted 4.14.182-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
==================================================================
BUG: KASAN: use-after-free in vsnprintf+0xad5/0x1350 lib/vsprintf.c:2214
Read of size 8 at addr ffff88821152f880 by task syz-executor.0/16774

CPU: 0 PID: 16774 Comm: syz-executor.0 Not tainted 4.14.182-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
Lost 1050 message(s)!

Crashes (4):
Manager	Time	Kernel	Commit	Syzkaller	Config	Log	Report	Maintainers
ci2-linux-4-14	2020/06/02 17:27	linux-4.14.y	4f68020f	52fd7b7d	.config	log	report	hpa@zytor.com, linux-kernel@vger.kernel.org, mingo@redhat.com, tglx@linutronix.de, x86@kernel.org
ci2-linux-4-14	2020/05/05 19:49	linux-4.14.y	d71f695c	4b76dd25	.config	log	report	linux-kernel@vger.kernel.org, maz@kernel.org, mhiramat@kernel.org, sashal@kernel.org, will@kernel.org
ci2-linux-4-14	2020/05/04 00:34	linux-4.14.y	773e2b1c	58ae5e18	.config	log	report	linux-kernel@vger.kernel.org, maz@kernel.org, mhiramat@kernel.org, sashal@kernel.org, will@kernel.org
ci2-linux-4-14	2020/02/05 02:45	linux-4.14.y	9fa690a2	93e5e335	.config	log	report