From: syzbot <syzbot+f65a2014305525a9f816@syzkaller.appspotmail.com>
To: andrealmeid@igalia.com, dave@stgolabs.net, dvhart@infradead.org,
linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org,
mingo@redhat.com, peterz@infradead.org,
syzkaller-bugs@googlegroups.com, tglx@linutronix.de
Subject: [syzbot] [fs?] BUG: sleeping function called from invalid context in vfree (2)
Date: Mon, 18 Aug 2025 01:05:33 -0700 [thread overview]
Message-ID: <68a2decd.050a0220.e29e5.009a.GAE@google.com> (raw)
Hello,
syzbot found the following issue on:
HEAD commit: 8f5ae30d69d7 Linux 6.17-rc1
git tree: git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci
console output: https://syzkaller.appspot.com/x/log.txt?x=15232442580000
kernel config: https://syzkaller.appspot.com/x/.config?x=8c5ac3d8b8abfcb
dashboard link: https://syzkaller.appspot.com/bug?extid=f65a2014305525a9f816
compiler: Debian clang version 20.1.7 (++20250616065708+6146a88f6049-1~exp1~20250616065826.132), Debian LLD 20.1.7
userspace arch: arm64
syz repro: https://syzkaller.appspot.com/x/repro.syz?x=14cbaba2580000
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=1157faf0580000
Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/18a2e4bd0c4a/disk-8f5ae30d.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/3b5395881b25/vmlinux-8f5ae30d.xz
kernel image: https://storage.googleapis.com/syzbot-assets/e875f4e3b7ff/Image-8f5ae30d.gz.xz
IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+f65a2014305525a9f816@syzkaller.appspotmail.com
BUG: sleeping function called from invalid context at mm/vmalloc.c:3409
in_atomic(): 1, irqs_disabled(): 0, non_block: 0, pid: 6664, name: syz-executor
preempt_count: 1, expected: 0
RCU nest depth: 0, expected: 0
no locks held by syz-executor/6664.
Preemption disabled at:
[<ffff80008b015088>] __schedule_loop kernel/sched/core.c:7042 [inline]
[<ffff80008b015088>] schedule+0xac/0x230 kernel/sched/core.c:7058
CPU: 0 UID: 0 PID: 6664 Comm: syz-executor Not tainted 6.17.0-rc1-syzkaller-g8f5ae30d69d7 #0 PREEMPT
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/30/2025
Call trace:
show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:499 (C)
__dump_stack+0x30/0x40 lib/dump_stack.c:94
dump_stack_lvl+0xd8/0x12c lib/dump_stack.c:120
dump_stack+0x1c/0x28 lib/dump_stack.c:129
__might_resched+0x348/0x4c4 kernel/sched/core.c:8957
__might_sleep+0x94/0x110 kernel/sched/core.c:8886
vfree+0xa0/0x3dc mm/vmalloc.c:3409
kvfree+0x24/0x40 mm/slub.c:5093
futex_hash_free+0x84/0x9c kernel/futex/core.c:1742
__mmdrop+0x2c0/0x4ec kernel/fork.c:692
mmdrop include/linux/sched/mm.h:55 [inline]
mmdrop_sched include/linux/sched/mm.h:83 [inline]
mmdrop_lazy_tlb_sched include/linux/sched/mm.h:110 [inline]
finish_task_switch+0x4a0/0x5a4 kernel/sched/core.c:5250
context_switch kernel/sched/core.c:5360 [inline]
__schedule+0x13b4/0x2864 kernel/sched/core.c:6961
__schedule_loop kernel/sched/core.c:7043 [inline]
schedule+0xb4/0x230 kernel/sched/core.c:7058
do_nanosleep+0x174/0x508 kernel/time/hrtimer.c:2100
hrtimer_nanosleep+0x154/0x2a4 kernel/time/hrtimer.c:2147
common_nsleep+0xa0/0xb8 kernel/time/posix-timers.c:1353
__do_sys_clock_nanosleep kernel/time/posix-timers.c:1399 [inline]
__se_sys_clock_nanosleep kernel/time/posix-timers.c:1376 [inline]
__arm64_sys_clock_nanosleep+0x328/0x364 kernel/time/posix-timers.c:1376
__invoke_syscall arch/arm64/kernel/syscall.c:35 [inline]
invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:49
el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:132
do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:151
el0_svc+0x58/0x180 arch/arm64/kernel/entry-common.c:879
el0t_64_sync_handler+0x84/0x12c arch/arm64/kernel/entry-common.c:898
el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:596
---
This report is generated by a bot. It may contain errors.
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reply other threads:[~2025-08-18 8:05 UTC|newest]
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