From: Sergey Senozhatsky <senozhatsky@chromium.org>
To: syzbot <syzbot+d692037148a8169fc9dd@syzkaller.appspotmail.com>
Cc: alex.gaynor@gmail.com, andriy.shevchenko@linux.intel.com,
bjorn3_gh@protonmail.com, boqun.feng@gmail.com,
bpf@vger.kernel.org, gary@garyguo.net,
linux-kernel@vger.kernel.org, linux@rasmusvillemoes.dk,
ojeda@kernel.org, pmladek@suse.com, rostedt@goodmis.org,
rust-for-linux@vger.kernel.org, senozhatsky@chromium.org,
syzkaller-bugs@googlegroups.com, wedsonaf@gmail.com
Subject: Re: [syzbot] upstream boot error: BUG: unable to handle kernel NULL pointer dereference in __dabt_svc
Date: Wed, 26 Apr 2023 13:49:28 +0900 [thread overview]
Message-ID: <20230426044928.GD1496740@google.com> (raw)
In-Reply-To: <00000000000079eebe05fa2ea9ad@google.com>
On (23/04/25 13:06), syzbot wrote:
> 8<--- cut here ---
> Unable to handle kernel NULL pointer dereference at virtual address 000005fc when read
> [000005fc] *pgd=80000080004003, *pmd=00000000
> Internal error: Oops: 206 [#1] PREEMPT SMP ARM
> Modules linked in:
> CPU: 1 PID: 0 Comm: swapper/1 Not tainted 6.3.0-syzkaller #0
> Hardware name: ARM-Versatile Express
> Insufficient stack space to handle exception!
So much stuff is going on there.
> Task stack: [0xdf85c000..0xdf85e000]
> IRQ stack: [0xdf804000..0xdf806000]
> Overflow stack: [0x828ae000..0x828af000]
> Internal error: kernel stack overflow: 0 [#2] PREEMPT SMP ARM
> Modules linked in:
> CPU: 1 PID: 0 Comm: swapper/1 Not tainted 6.3.0-syzkaller #0
> Hardware name: ARM-Versatile Express
> PC is at __dabt_svc+0x14/0x60 arch/arm/kernel/entry-armv.S:210
> LR is at vsnprintf+0x378/0x408 lib/vsprintf.c:2862
> pc : [<80200a74>] lr : [<817ad5d8>] psr: 00000193
> sp : df804028 ip : df805868 fp : df805864
> r10: 00000060 r9 : ffffffff r8 : 00000010
> r7 : 00000020 r6 : 00000004 r5 : ffffffff r4 : df805960
> r3 : ffffffff r2 : 00000040 r1 : ffffffff r0 : 8264d250
> Flags: nzcv IRQs off FIQs on Mode SVC_32 ISA ARM Segment none
> Control: 30c5387d Table: 80003000 DAC: 00000000
> Register r0 information:
> 8<--- cut here ---
> Unable to handle kernel NULL pointer dereference at virtual address 000001ff when read
> [000001ff] *pgd=80000080004003, *pmd=00000000
> Internal error: Oops: 206 [#3] PREEMPT SMP ARM
> Modules linked in:
> CPU: 1 PID: 0 Comm: swapper/1 Not tainted 6.3.0-syzkaller #0
> Hardware name: ARM-Versatile Express
> PC is at __find_vmap_area mm/vmalloc.c:841 [inline]
> PC is at find_vmap_area mm/vmalloc.c:1862 [inline]
> PC is at find_vm_area mm/vmalloc.c:2571 [inline]
> PC is at vmalloc_dump_obj+0x38/0xb4 mm/vmalloc.c:4108
> LR is at __raw_spin_lock include/linux/spinlock_api_smp.h:132 [inline]
> LR is at _raw_spin_lock+0x18/0x58 kernel/locking/spinlock.c:154
Not sure if I can make sense out of this.
next prev parent reply other threads:[~2023-04-26 4:49 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-04-25 20:06 [syzbot] upstream boot error: BUG: unable to handle kernel NULL pointer dereference in __dabt_svc syzbot
2023-04-25 20:26 ` Miguel Ojeda
2023-04-26 6:34 ` Dmitry Vyukov
2023-04-26 10:09 ` Miguel Ojeda
2023-04-26 10:12 ` Dmitry Vyukov
2023-04-26 10:29 ` Miguel Ojeda
2023-04-26 10:43 ` Dmitry Vyukov
2023-04-26 11:37 ` Miguel Ojeda
2024-09-16 13:40 ` Dmitry Vyukov
2023-04-26 4:49 ` Sergey Senozhatsky [this message]
2023-04-26 6:40 ` Dmitry Vyukov
2023-04-26 6:40 ` Dmitry Vyukov
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