From: syzbot <syzbot+b1a83ab2a9eb9321fbdd@syzkaller.appspotmail.com>
To: akpm@linux-foundation.org, ebiederm@xmission.com,
glider@google.com, linux-kernel@vger.kernel.org,
paskripkin@gmail.com, penguin-kernel@I-love.SAKURA.ne.jp,
rostedt@goodmis.org, syzkaller-bugs@googlegroups.com,
tglx@linutronix.de
Subject: [syzbot] [kernel?] KMSAN: uninit-value in profile_hits (3)
Date: Tue, 26 Dec 2023 07:59:18 -0800 [thread overview]
Message-ID: <000000000000d6b55e060d6bc390@google.com> (raw)
Hello,
syzbot found the following issue on:
HEAD commit: 1978a14f70af x86: kmsan: enable KMSAN builds for x86
git tree: https://github.com/google/kmsan.git master
console output: https://syzkaller.appspot.com/x/log.txt?x=13b7a95b700000
kernel config: https://syzkaller.appspot.com/x/.config?x=d830111cc3be873
dashboard link: https://syzkaller.appspot.com/bug?extid=b1a83ab2a9eb9321fbdd
compiler: clang version 14.0.0 (/usr/local/google/src/llvm-git-monorepo 2b554920f11c8b763cd9ed9003f4e19b919b8e1f), GNU ld (GNU Binutils for Debian) 2.35.2
syz repro: https://syzkaller.appspot.com/x/repro.syz?x=14b5476b700000
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=142c9237700000
IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+b1a83ab2a9eb9321fbdd@syzkaller.appspotmail.com
=====================================================
BUG: KMSAN: uninit-value in do_profile_hits kernel/profile.c:236 [inline]
BUG: KMSAN: uninit-value in profile_hits+0xaf2/0x1260 kernel/profile.c:326
do_profile_hits kernel/profile.c:236 [inline]
profile_hits+0xaf2/0x1260 kernel/profile.c:326
profile_hit include/linux/profile.h:58 [inline]
profile_tick+0x241/0x250 kernel/profile.c:336
tick_sched_handle kernel/time/tick-sched.c:227 [inline]
tick_sched_timer+0x4bd/0x610 kernel/time/tick-sched.c:1428
__run_hrtimer+0x49f/0xc50 kernel/time/hrtimer.c:1685
__hrtimer_run_queues kernel/time/hrtimer.c:1749 [inline]
hrtimer_interrupt+0x7f7/0x2100 kernel/time/hrtimer.c:1811
local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1086 [inline]
__sysvec_apic_timer_interrupt+0x178/0x5e0 arch/x86/kernel/apic/apic.c:1103
sysvec_apic_timer_interrupt+0x9d/0xc0 arch/x86/kernel/apic/apic.c:1097
asm_sysvec_apic_timer_interrupt+0x12/0x20
__raw_spin_unlock_irq include/linux/spinlock_api_smp.h:160 [inline]
_raw_spin_unlock_irq+0x36/0x60 kernel/locking/spinlock.c:202
spin_unlock_irq include/linux/spinlock.h:399 [inline]
__set_current_blocked+0xb0c/0xb90 kernel/signal.c:3051
sigprocmask kernel/signal.c:3085 [inline]
__do_sys_rt_sigprocmask kernel/signal.c:3162 [inline]
__se_sys_rt_sigprocmask+0x438/0x5b0 kernel/signal.c:3145
__x64_sys_rt_sigprocmask+0x11e/0x170 kernel/signal.c:3145
do_syscall_x64 arch/x86/entry/common.c:51 [inline]
do_syscall_64+0x54/0xd0 arch/x86/entry/common.c:81
entry_SYSCALL_64_after_hwframe+0x44/0xae
Local variable iter.i created at:
new_sync_read fs/read_write.c:393 [inline]
vfs_read+0xb8a/0x1980 fs/read_write.c:481
ksys_read+0x28b/0x510 fs/read_write.c:619
CPU: 1 PID: 3474 Comm: sshd Not tainted 5.17.0-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
=====================================================
---
This report is generated by a bot. It may contain errors.
See https://goo.gl/tpsmEJ for more information about syzbot.
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If the report is already addressed, let syzbot know by replying with:
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next reply other threads:[~2023-12-26 15:59 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-12-26 15:59 syzbot [this message]
2023-12-29 16:37 ` [syzbot] [kernel?] KMSAN: uninit-value in profile_hits (3) Tetsuo Handa
2023-12-29 16:56 ` syzbot
2024-01-31 14:06 ` [PATCH] profiling: initialize prof_cpu_mask from profile_online_cpu() Tetsuo Handa
2024-02-15 14:41 ` Tetsuo Handa
2024-04-27 6:51 ` [PATCH (REPOST)] " Tetsuo Handa
2024-05-05 6:18 ` Tetsuo Handa
2023-12-30 5:38 ` [syzbot] Re: [syzbot] [kernel?] KMSAN: uninit-value in profile_hits (3) syzbot
[not found] <tencent_B8F776D76766DB936C636F496403A1844A05@qq.com>
2023-12-30 5:58 ` syzbot
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