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kasong@tencent.com, kernel-team@meta.com, linux-kernel@vger.kernel.org, linux-mm@kvack.org, ljs@kernel.org, mhocko@kernel.org, mhocko@suse.com, muchun.song@linux.dev, qi.zheng@linux.dev, roman.gushchin@linux.dev, shakeel.butt@linux.dev, syzkaller-bugs@googlegroups.com, weixugc@google.com, yuanchu@google.com Content-Type: text/plain; charset="UTF-8" X-Stat-Signature: pb8wqcki16sywk3aqd6ycnb4t6yi486h X-Rspamd-Queue-Id: 4B88F180005 X-Rspamd-Server: rspam03 X-Rspam-User: X-HE-Tag: 1786537585-173877 X-HE-Meta: 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 YbNnrnl8 F9IksIp9AqXilThFE8VtSw== Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: syzbot has found a reproducer for the following issue on: HEAD commit: f5bbbfec59b4 Merge tag 'probes-fixes-v7.2-rc7' of git://gi.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=11f44c79580000 kernel config: https://syzkaller.appspot.com/x/.config?x=c44651ea7dd2f307 dashboard link: https://syzkaller.appspot.com/bug?extid=12ee2725d5fde63a9c96 compiler: gcc (Debian 14.2.0-19) 14.2.0, GNU ld (GNU Binutils for Debian) 2.44 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=10d11149580000 IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+12ee2725d5fde63a9c96@syzkaller.appspotmail.com ------------[ cut here ]------------ current_is_kswapd() WARNING: mm/vmscan.c:3800 at set_mm_walk+0x210/0x270 mm/vmscan.c:3800, CPU#2: kswapd0/111 Modules linked in: CPU: 2 UID: 0 PID: 111 Comm: kswapd0 Not tainted syzkaller #0 PREEMPT(full) Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 RIP: 0010:set_mm_walk+0x210/0x270 mm/vmscan.c:3800 Code: 13 00 00 4d 8d 7d 08 e9 f7 fe ff ff e8 19 f7 2a 00 e9 b7 fe ff ff e8 7f 68 ba ff 90 0f 0b 90 e9 d2 fe ff ff e8 71 68 ba ff 90 <0f> 0b 90 e9 74 ff ff ff 4c 89 ff e8 20 f7 2a 00 e9 4e fe ff ff 48 RSP: 0018:ffffc9000272f2b8 EFLAGS: 00010293 RAX: 0000000000000000 RBX: ffff888023f04a80 RCX: ffffffff82500a88 RDX: ffff888023f04a80 RSI: ffffffff82500b0f RDI: ffff888023f04a80 RBP: 0000000000020000 R08: 0000000000000005 R09: 0000000000000000 R10: 0000000000020000 R11: 0000000000000000 R12: 0000000000000000 R13: ffffc9000272fc38 R14: 0000000000000001 R15: ffffc9000272fc40 FS: 0000000000000000(0000) GS:ffff8880d5fec000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00005643a2ed4168 CR3: 000000003c7ec000 CR4: 0000000000352ef0 Call Trace: try_to_inc_max_seq+0xf0/0x1090 mm/vmscan.c:4023 try_to_shrink_lruvec+0x4bd/0x6b0 mm/vmscan.c:4977 lru_gen_shrink_lruvec mm/vmscan.c:5128 [inline] shrink_lruvec+0x31e/0x25b0 mm/vmscan.c:5888 mem_cgroup_shrink_node+0x227/0x6a0 mm/vmscan.c:6753 mem_cgroup_soft_reclaim mm/memcontrol-v1.c:312 [inline] memcg1_soft_limit_reclaim+0x2d5/0x830 mm/memcontrol-v1.c:362 balance_pgdat+0xa11/0x1f00 mm/vmscan.c:7177 kswapd+0x556/0xb50 mm/vmscan.c:7462 kthread+0x370/0x450 kernel/kthread.c:436 ret_from_fork+0x72b/0xd50 arch/x86/kernel/process.c:158 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 --- 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.