[syzbot] linux-next test error: WARNING in __mod_memcg_lruvec_state

[syzbot]

Hello,

syzbot found the following issue on:

HEAD commit: 06aeb1495c39 Add linux-next specific files for 20220225
git tree: linux-next
console output: https://syzkaller.appspot.com/x/log.txt?x=17a69c8e700000
kernel config: https://syzkaller.appspot.com/x/.config?x=8d8bf144f45f9b3
dashboard link: https://syzkaller.appspot.com/bug?extid=a526c269335f529d25c8
compiler: gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2

IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+a526c2...@syzkaller.appspotmail.com

------------[ cut here ]------------
WARNING: CPU: 1 PID: 3590 at mm/memcontrol.c:749 __mod_memcg_lruvec_state+0x1ab/0x220
Modules linked in:
CPU: 1 PID: 3590 Comm: syz-fuzzer Not tainted 5.17.0-rc5-next-20220225-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:__mod_memcg_lruvec_state+0x1ab/0x220
Code: bb 23 92 0e 48 c7 c7 e0 b6 d9 89 e8 af d9 95 07 65 c7 05 f4 c8 37 7e 00 00 00 00 48 83 c4 08 5b 5d 41 5c 41 5d 41 5e 41 5f c3 <0f> 0b e9 a6 fe ff ff 4c 89 f6 48 c7 c7 60 63 ee 8b e8 8f d3 45 02
RSP: 0000:ffffc900039efbc0 EFLAGS: 00010202
RAX: 0000000000000206 RBX: 0000000000000200 RCX: ffffffff81aafa53
RDX: 1ffff1100218fa8d RSI: 000000000000001c RDI: ffff888010c7d468
RBP: ffff888010c7d000 R08: 0000000000000001 R09: ffffffff8ba144e7
R10: fffffbfff174289c R11: 0000000000000001 R12: 000000000000001c
R13: ffff88813fe38000 R14: ffff88813fe38000 R15: ffff88813fffa000
FS: 000000c0001d2c90(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000c000e00000 CR3: 000000001cfb0000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
<TASK>
__mod_lruvec_page_state+0x1e5/0x3e0
page_add_new_anon_rmap+0x2e5/0x930
do_huge_pmd_anonymous_page+0x102c/0x2350
__handle_mm_fault+0x2a66/0x4110
handle_mm_fault+0x1c8/0x790
do_user_addr_fault+0x489/0x11c0
exc_page_fault+0x9e/0x180
asm_exc_page_fault+0x1e/0x30
RIP: 0033:0x465e33
Code: 00 00 c5 fe 6f 06 c5 fe 6f 4e 20 c5 fe 6f 56 40 c5 fe 6f 5e 60 48 81 c6 80 00 00 00 c5 fd e7 07 c5 fd e7 4f 20 c5 fd e7 57 40 <c5> fd e7 5f 60 48 81 c7 80 00 00 00 48 81 eb 80 00 00 00 77 b5 0f
RSP: 002b:000000c0003533b8 EFLAGS: 00010202
RAX: 000000c000db4000 RBX: 0000000000423fe0 RCX: 000000c001224000
RDX: 000000c001224001 RSI: 000000c000990020 RDI: 000000c000dfffa0
RBP: 000000c000353418 R08: 000000c000db4000 R09: 0000000000000000
R10: 0000000000000020 R11: 0000000000000206 R12: 000000c000243f18
R13: 000000000000002e R14: 000000c0000001a0 R15: 0000000000000000
</TASK>


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[Andrew Morton]

(cc bigeasy)

WARN_ON_ONCE(!irqs_disabled());

in __mod_memcg_lruvec_state(), methinks.

[Sebastian Andrzej Siewior]

#syz test: git://git.kernel.org/pub/scm/linux/kernel/git/bigeasy/staging.git 71d365035711aef4c4b1018d02fcf7868e3cb0c5

On 2022-02-27 22:09:43 [-0800], Andrew Morton wrote:
> (cc bigeasy)
>
> WARN_ON_ONCE(!irqs_disabled());
>
> in __mod_memcg_lruvec_state(), methinks.

This report ist from before you added
mm-memcg-protect-per-cpu-counter-by-disabling-preemption-on-preempt_rt-where-needed-fix.patch

to your tree. So it can be ignored. The next -next tree should be fine.

Sebastian

[syzbot]

> #syz test: git://git.kernel.org/pub/scm/linux/kernel/git/bigeasy/staging.git 71d365035711aef4c4b1018d02fcf7868e3cb0c5

This crash does not have a reproducer. I cannot test it.

[syzbot]

Auto-closing this bug as obsolete.
Crashes did not happen for a while, no reproducer and no activity.