linux-kernel - Re: [syzbot] [mm?] WARNING: locking bug in __set_page

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Message-ID: <6768998e.050a0220.2f3838.000c.GAE@google.com>
Date: Sun, 22 Dec 2024 14:58:22 -0800
From: syzbot <syzbot+56dc65adbd1d2ae1f844@...kaller.appspotmail.com>
To: akpm@...ux-foundation.org, boqun.feng@...il.com, cylamarver932@...il.com, 
	linux-kernel@...r.kernel.org, linux-mm@...ck.org, peterz@...radead.org, 
	syzkaller-bugs@...glegroups.com
Subject: Re: [syzbot] [mm?] WARNING: locking bug in __set_page_owner

syzbot has found a reproducer for the following issue on:

HEAD commit:    bcde95ce32b6 Merge tag 'devicetree-fixes-for-6.13-1' of gi..
git tree:       upstream
console output: https://syzkaller.appspot.com/x/log.txt?x=14b65f30580000
kernel config:  https://syzkaller.appspot.com/x/.config?x=6a2b862bf4a5409f
dashboard link: https://syzkaller.appspot.com/bug?extid=56dc65adbd1d2ae1f844
compiler:       Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=12835fe8580000
C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=11cc58c4580000

Downloadable assets:
disk image (non-bootable): https://storage.googleapis.com/syzbot-assets/7feb34a89c2a/non_bootable_disk-bcde95ce.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/add1e48e5cb3/vmlinux-bcde95ce.xz
kernel image: https://storage.googleapis.com/syzbot-assets/0db0a85c546b/bzImage-bcde95ce.xz

IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+56dc65adbd1d2ae1f844@...kaller.appspotmail.com

=============================
[ BUG: Invalid wait context ]
6.13.0-rc3-syzkaller-00301-gbcde95ce32b6 #0 Not tainted
-----------------------------
syz-executor595/5435 is trying to lock:
ffffffff8ea6bab8 (stack_list_lock){-.-.}-{3:3}, at: add_stack_record_to_list mm/page_owner.c:182 [inline]
ffffffff8ea6bab8 (stack_list_lock){-.-.}-{3:3}, at: inc_stack_record_count mm/page_owner.c:214 [inline]
ffffffff8ea6bab8 (stack_list_lock){-.-.}-{3:3}, at: __set_page_owner+0x5cb/0x800 mm/page_owner.c:329
other info that might help us debug this:
context-{2:2}
no locks held by syz-executor595/5435.
stack backtrace:
CPU: 0 UID: 0 PID: 5435 Comm: syz-executor595 Not tainted 6.13.0-rc3-syzkaller-00301-gbcde95ce32b6 #0
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:94 [inline]
 dump_stack_lvl+0x241/0x360 lib/dump_stack.c:120
 print_lock_invalid_wait_context kernel/locking/lockdep.c:4826 [inline]
 check_wait_context kernel/locking/lockdep.c:4898 [inline]
 __lock_acquire+0x15a8/0x2100 kernel/locking/lockdep.c:5176
 lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5849
 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
 _raw_spin_lock_irqsave+0xd5/0x120 kernel/locking/spinlock.c:162
 add_stack_record_to_list mm/page_owner.c:182 [inline]
 inc_stack_record_count mm/page_owner.c:214 [inline]
 __set_page_owner+0x5cb/0x800 mm/page_owner.c:329
 set_page_owner include/linux/page_owner.h:32 [inline]
 post_alloc_hook+0x1f3/0x230 mm/page_alloc.c:1558
 prep_new_page mm/page_alloc.c:1566 [inline]
 get_page_from_freelist+0x365c/0x37a0 mm/page_alloc.c:3476
 __alloc_pages_noprof+0x292/0x710 mm/page_alloc.c:4753
 alloc_pages_mpol_noprof+0x3e8/0x680 mm/mempolicy.c:2269
 stack_depot_save_flags+0x72d/0x940 lib/stackdepot.c:627
 kasan_save_stack+0x4f/0x60 mm/kasan/common.c:48
 __kasan_record_aux_stack+0xac/0xc0 mm/kasan/generic.c:544
 task_work_add+0xd9/0x490 kernel/task_work.c:77
 __run_posix_cpu_timers kernel/time/posix-cpu-timers.c:1223 [inline]
 run_posix_cpu_timers+0x6ac/0x810 kernel/time/posix-cpu-timers.c:1422
 tick_sched_handle kernel/time/tick-sched.c:276 [inline]
 tick_nohz_handler+0x37c/0x500 kernel/time/tick-sched.c:297
 __run_hrtimer kernel/time/hrtimer.c:1739 [inline]
 __hrtimer_run_queues+0x551/0xd30 kernel/time/hrtimer.c:1803
 hrtimer_interrupt+0x403/0xa40 kernel/time/hrtimer.c:1865
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1038 [inline]
 __sysvec_apic_timer_interrupt+0x110/0x420 arch/x86/kernel/apic/apic.c:1055
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1049 [inline]
 sysvec_apic_timer_interrupt+0x52/0xc0 arch/x86/kernel/apic/apic.c:1049
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0033:0x7f8ad0899707
Code: ff ff ff e9 80 ff ff ff 66 66 2e 0f 1f 84 00 00 00 00 00 53 ba 10 00 00 00 be 03 00 00 00 bf 10 00 00 00 48 81 ec 50 10 00 00 <e8> 24 2d 04 00 83 f8 ff 74 17 89 c3 48 89 e7 31 c9 31 d2 89 c6 e8
RSP: 002b:00007f8ad0083110 EFLAGS: 00010202
RAX: 0000000000000000 RBX: 00007f8ad09641a8 RCX: 00007f8ad08da7a9
RDX: 0000000000000010 RSI: 0000000000000003 RDI: 0000000000000010
RBP: 00007f8ad09641a0 R08: 0000000000000000 R09: 00007f8ad00846c0
R10: 00007f8ad00846c0 R11: 0000000000000246 R12: 00007f8ad09641ac
R13: 000000000000000b R14: 00007ffe1da98cf0 R15: 00007ffe1da98dd8
 </TASK>


---
If you want syzbot to run the reproducer, reply with:
#syz test: git://repo/address.git branch-or-commit-hash
If you attach or paste a git patch, syzbot will apply it before testing.