From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by smtp.lore.kernel.org (Postfix) with ESMTP id 77381C5B549 for ; Tue, 27 May 2025 13:37:36 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id DB9436B0085; Tue, 27 May 2025 09:37:35 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id D92426B009D; Tue, 27 May 2025 09:37:35 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id CA7306B009E; Tue, 27 May 2025 09:37:35 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from relay.hostedemail.com (smtprelay0017.hostedemail.com [216.40.44.17]) by kanga.kvack.org (Postfix) with ESMTP id ABD106B0085 for ; Tue, 27 May 2025 09:37:35 -0400 (EDT) Received: from smtpin03.hostedemail.com (a10.router.float.18 [10.200.18.1]) by unirelay08.hostedemail.com (Postfix) with ESMTP id 5BD6B140C54 for ; Tue, 27 May 2025 13:37:35 +0000 (UTC) X-FDA: 83488790070.03.76A56E9 Received: from mail-io1-f79.google.com (mail-io1-f79.google.com [209.85.166.79]) by imf03.hostedemail.com (Postfix) with ESMTP id BB2252000A for ; Tue, 27 May 2025 13:37:33 +0000 (UTC) Authentication-Results: imf03.hostedemail.com; dkim=none; spf=pass (imf03.hostedemail.com: domain of 3HMA1aAkbALstz0lbmmfsbqqje.hpphmfvtfsdpoufou.dpn@M3KW2WVRGUFZ5GODRSRYTGD7.apphosting.bounces.google.com designates 209.85.166.79 as permitted sender) smtp.mailfrom=3HMA1aAkbALstz0lbmmfsbqqje.hpphmfvtfsdpoufou.dpn@M3KW2WVRGUFZ5GODRSRYTGD7.apphosting.bounces.google.com; dmarc=fail reason="SPF not aligned (relaxed), No valid DKIM" header.from=appspotmail.com (policy=none) ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=hostedemail.com; s=arc-20220608; t=1748353053; h=from:from:sender:reply-to:subject:subject:date:date: message-id:message-id:to:to:cc:mime-version:mime-version: content-type:content-type:content-transfer-encoding:in-reply-to: references; bh=1py+DZ00oyprkVc+fla+24rh0dRjdu53vtBg26tccdo=; b=S6hy9gDB1JJccQfil05RE3kUgiQchYOwN0wUTy/zQ2G5UC7VLvFsRjQZcMCs7Z3+FaWRf7 xXEbluRl+yj1x0zRcfMZL8XogfRmTq5iCe4iTrGjAODmevFwgv+lgGEsXXrAWJUmmJ9AnW jn/Zw5vzhpGPih249l7lYDHKxtqRJJM= ARC-Authentication-Results: i=1; imf03.hostedemail.com; dkim=none; spf=pass (imf03.hostedemail.com: domain of 3HMA1aAkbALstz0lbmmfsbqqje.hpphmfvtfsdpoufou.dpn@M3KW2WVRGUFZ5GODRSRYTGD7.apphosting.bounces.google.com designates 209.85.166.79 as permitted sender) smtp.mailfrom=3HMA1aAkbALstz0lbmmfsbqqje.hpphmfvtfsdpoufou.dpn@M3KW2WVRGUFZ5GODRSRYTGD7.apphosting.bounces.google.com; dmarc=fail reason="SPF not aligned (relaxed), No valid DKIM" header.from=appspotmail.com (policy=none) ARC-Seal: i=1; s=arc-20220608; d=hostedemail.com; t=1748353053; a=rsa-sha256; cv=none; b=BwwBViIRhUaK5YBQT1G4ugRAEiJpOStcOt6hWqAIcTrYWViHUS21YIONQPGD3rI/RLX9LB +9Mb7hrTrUXe5cGG3VbkYmsxTCO2JGbun58K/GIcgqeK4rG4ZUI5S52VLPqEXhZA7It4uo Ox8P8MNK22ZEY/XX3tDdm3PPWEhphe4= Received: by mail-io1-f79.google.com with SMTP id ca18e2360f4ac-85e4f920dacso243431339f.2 for ; Tue, 27 May 2025 06:37:33 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1748353053; x=1748957853; h=to:from:subject:message-id:date:mime-version:x-gm-message-state :from:to:cc:subject:date:message-id:reply-to; bh=1py+DZ00oyprkVc+fla+24rh0dRjdu53vtBg26tccdo=; b=Jh31I2+gu9jnBosQrvdx25aSOXlkUIbLTLNSgnTBxtX/0PsXorkDrEJvWuDj4HahEC /zPKkGWXKcVCjJ5P7pFwm4CbqvuB29Jc2EpEVj98O+vaU0HlpyVCeFvbqeKfrJlkm2lk 3Y6ramvgHbxGoxEW5NVujumUyrVJfIjJbpxusu4MeTDzrw1AhaEd3zY8HMfZi0P8LASO EgbYIAUEP1FGiqgJZsNdyusxzFreR2IJnNSXyZCjiJLtbW7N6E+pEVJOPSwbZBtdClER puGGeAaf77AUjBVQ7x2vNfDe6bXaVtInx5RBWd5kTxtMrOlsV07hUAL8FxIbrJz5F5Jr nIfg== X-Forwarded-Encrypted: i=1; AJvYcCUbLhmI+4gL6S89cjO2gu48hRrzjh2EKHMV4d0zQQy8VNfkFS8dh/wgmGB6R10Oqi3BUP7j+MQg9A==@kvack.org X-Gm-Message-State: AOJu0YyWWUmVQJydQjtUgOUeGTziL9kbpx+IYi12lvbnRSGfWN6ZbQa+ 6KDhangSV0sCmUg3TRby96YtGQnLRZhExItomThJuRuU0ehEr2YFABRQtKruTmc83dsedvnftpQ 5wNoWBqZvv46ILa+bPCh5ntGrhy+WFMhl49Y9I740rZi5FDz1tta56ddam6A= X-Google-Smtp-Source: AGHT+IHdbMEwKKnSrAAWp9WJoD6Pkfj9S+jcbGbdg4O4YoCpSQaOks7NJu+irfJruvpaLyymr000eUHQSzT+i9eb+zocGnOyME+j MIME-Version: 1.0 X-Received: by 2002:a05:6602:4191:b0:867:6c90:4867 with SMTP id ca18e2360f4ac-86cbb91658cmr1572338539f.14.1748353052928; Tue, 27 May 2025 06:37:32 -0700 (PDT) Date: Tue, 27 May 2025 06:37:32 -0700 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <6835c01c.a70a0220.253bc2.00b7.GAE@google.com> Subject: [syzbot] [mm?] [cgroups?] general protection fault in refill_obj_stock From: syzbot To: akpm@linux-foundation.org, cgroups@vger.kernel.org, hannes@cmpxchg.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org, mhocko@kernel.org, muchun.song@linux.dev, roman.gushchin@linux.dev, shakeel.butt@linux.dev, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8" X-Rspam-User: X-Stat-Signature: wjxrrkiokw58mtytaykq7ou73ad51z5d X-Rspamd-Queue-Id: BB2252000A X-Rspamd-Server: rspam11 X-HE-Tag: 1748353053-929115 X-HE-Meta: U2FsdGVkX1/GBILOnkFbo8Ph/nAicQ/jWlRS99d4dLE4yF//cFwtC7SvVq67sa+CHfb9vD5hgvB4xITdyBpxYHxl78KRquS9uUE3iIER3h8Qx8zPhBTQNeDCNnsDJzStYqTcCaBxW4iZO8lkQgxiAogw8XKz9b6CgKqUBMqtR7LnE1tj5LHeGc1WlF7gSsarKWEGKNlUOSwrwBBSDSrIH9T0ObPrziyLwwausqfU9xGqoORm38qcr3N17Yb5QQvK8J73bT44FfxG+pkTJSghvQO/phtUd5YIMXsOgXE2PRZU08wne/vQkaCSERgjwOy2TuOCBSxbHprgiWWHEQg+5YiC8z0+9aIpFcIeHMdFJPKvnLuDBTZZ0QmtuiMpf3tU9apB0W8J/tLM15tPI27qufBIRI4I5bK2oGq7dkBqsuVcyS5DHNkot50wq2CRv80Yr+YBWuvB0ron9z+1TVwLoPJCB52VXjv9XyZs/zU7eSwXcmuG9TsvmfQ0CTL5GiRl0PZco+/uzmiYKB7tEzTqayVM2CsMcpfCGXL9OHR56Sura6fcR3zdwuN4hP+bJfx1nSJjsbcJvVpCe8A+s07JeGe5WbVdrxchDTQFk+FKOqNN7lpZ+ZWg/FRQGRwxfGLGDZb9Dn6Ayru1SNlEcmE4mXuOQu1e2uzOlYr64Ue4Dh56oXjgJq3mHArP0KSHc7Haa2wKNf5c9zxG/fjWViyEHTl9b4LmElcgvamcVwYMQ67cwtf73ogxNUEVBIp+QvDt7/mC0xKsTGQb+/JlgAnKTzOyhI592UzVnTK10RbKSxFLXT9DUPn9yuuhd3356mlsNNg6Ru1Z5ChP2t95iEobe71nVaU0qUscadvlaU3Vk+zH+ZZaSGTl1qTGEQH0d7ixZktlkD4o8I+xrOeKEzqiw5SbWcI9QK/WJVeFLO4G97k1i+tDboSNviiyp368+79ai5JRdogTPl6oiNVFsoq 2GLlt+Vq 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 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: Hello, syzbot found the following issue on: HEAD commit: 914873bc7df9 Merge tag 'x86-build-2025-05-25' of git://git.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=12dcf882580000 kernel config: https://syzkaller.appspot.com/x/.config?x=231a962e5fdb804b dashboard link: https://syzkaller.appspot.com/bug?extid=5dd4e428fa723938e6fd compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 Unfortunately, I don't have any reproducer for this issue yet. Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/ecae640d0786/disk-914873bc.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/d451e50efeae/vmlinux-914873bc.xz kernel image: https://storage.googleapis.com/syzbot-assets/8f7363263e49/bzImage-914873bc.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+5dd4e428fa723938e6fd@syzkaller.appspotmail.com Oops: general protection fault, probably for non-canonical address 0xffff11019a0ac400: 0000 [#1] SMP KASAN NOPTI KASAN: maybe wild-memory-access in range [0xfff8a80cd0562000-0xfff8a80cd0562007] CPU: 0 UID: 0 PID: 13104 Comm: dhcpcd Not tainted 6.15.0-syzkaller-01972-g914873bc7df9 #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 RIP: 0010:percpu_ref_get_many include/linux/percpu-refcount.h:205 [inline] RIP: 0010:percpu_ref_get include/linux/percpu-refcount.h:222 [inline] RIP: 0010:obj_cgroup_get include/linux/memcontrol.h:760 [inline] RIP: 0010:replace_stock_objcg mm/memcontrol.c:2772 [inline] RIP: 0010:refill_obj_stock+0x1e1/0x7d0 mm/memcontrol.c:2950 Code: 02 00 00 48 b8 00 00 00 00 00 fc ff df 4c 89 e2 48 c1 ea 03 80 3c 02 00 0f 85 96 05 00 00 49 8b 04 24 a8 03 0f 85 23 03 00 00 <65> 48 ff 00 e8 a6 40 ff ff 49 8d 7c 24 18 be 04 00 00 00 48 89 7c RSP: 0018:ffffc90002e27928 EFLAGS: 00010046 RAX: ffff888075701400 RBX: ffffffff93a8a0c0 RCX: 0000000028853866 RDX: 1ffff1100d2a5000 RSI: ffffffff8bf4fb80 RDI: ffffffff8dcf8da0 RBP: ffffffff908687e4 R08: 85b13f40d71cc5de R09: 0000000000000001 R10: 0000000000000000 R11: 0000000000000001 R12: ffff888069528000 R13: 0000000000000078 R14: ffff8880b84350c0 R15: ffff8880b8435108 FS: 0000000000000000(0000) GS:ffff8881249ab000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000563fcc194660 CR3: 000000004f19d000 CR4: 0000000000350ef0 Call Trace: obj_cgroup_uncharge mm/memcontrol.c:3013 [inline] __memcg_slab_free_hook+0x23d/0x610 mm/memcontrol.c:3100 memcg_slab_free_hook mm/slub.c:2205 [inline] slab_free mm/slub.c:4639 [inline] kmem_cache_free+0x37e/0x4d0 mm/slub.c:4744 anon_vma_chain_free mm/rmap.c:147 [inline] unlink_anon_vmas+0x173/0x820 mm/rmap.c:421 free_pgtables+0x2d4/0x810 mm/memory.c:391 exit_mmap+0x3fb/0xb90 mm/mmap.c:1295 __mmput+0x12a/0x410 kernel/fork.c:1381 mmput+0x62/0x70 kernel/fork.c:1404 exit_mm kernel/exit.c:595 [inline] do_exit+0xa3a/0x2c70 kernel/exit.c:947 do_group_exit+0xd3/0x2a0 kernel/exit.c:1108 __do_sys_exit_group kernel/exit.c:1119 [inline] __se_sys_exit_group kernel/exit.c:1117 [inline] __x64_sys_exit_group+0x3e/0x50 kernel/exit.c:1117 x64_sys_call+0x1530/0x1730 arch/x86/include/generated/asm/syscalls_64.h:232 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xcd/0x260 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fad55e056c5 Code: Unable to access opcode bytes at 0x7fad55e0569b. RSP: 002b:00007ffdf148a868 EFLAGS: 00000206 ORIG_RAX: 00000000000000e7 RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007fad55e056c5 RDX: 00000000000000e7 RSI: ffffffffffffff88 RDI: 0000000000000001 RBP: 00007ffdf148ae78 R08: 0000563fee1c62c0 R09: 0000000000000002 R10: 00000000000000e0 R11: 0000000000000206 R12: 00007ffdf148a8b0 R13: 0000563fee1c7950 R14: 00007ffdf148aaf0 R15: 00007ffdf148a8a0 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:percpu_ref_get_many include/linux/percpu-refcount.h:205 [inline] RIP: 0010:percpu_ref_get include/linux/percpu-refcount.h:222 [inline] RIP: 0010:obj_cgroup_get include/linux/memcontrol.h:760 [inline] RIP: 0010:replace_stock_objcg mm/memcontrol.c:2772 [inline] RIP: 0010:refill_obj_stock+0x1e1/0x7d0 mm/memcontrol.c:2950 Code: 02 00 00 48 b8 00 00 00 00 00 fc ff df 4c 89 e2 48 c1 ea 03 80 3c 02 00 0f 85 96 05 00 00 49 8b 04 24 a8 03 0f 85 23 03 00 00 <65> 48 ff 00 e8 a6 40 ff ff 49 8d 7c 24 18 be 04 00 00 00 48 89 7c RSP: 0018:ffffc90002e27928 EFLAGS: 00010046 RAX: ffff888075701400 RBX: ffffffff93a8a0c0 RCX: 0000000028853866 RDX: 1ffff1100d2a5000 RSI: ffffffff8bf4fb80 RDI: ffffffff8dcf8da0 RBP: ffffffff908687e4 R08: 85b13f40d71cc5de R09: 0000000000000001 R10: 0000000000000000 R11: 0000000000000001 R12: ffff888069528000 R13: 0000000000000078 R14: ffff8880b84350c0 R15: ffff8880b8435108 FS: 0000000000000000(0000) GS:ffff8881249ab000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000563fcc194660 CR3: 000000004f19d000 CR4: 0000000000350ef0 ---------------- Code disassembly (best guess), 1 bytes skipped: 0: 00 00 add %al,(%rax) 2: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax 9: fc ff df c: 4c 89 e2 mov %r12,%rdx f: 48 c1 ea 03 shr $0x3,%rdx 13: 80 3c 02 00 cmpb $0x0,(%rdx,%rax,1) 17: 0f 85 96 05 00 00 jne 0x5b3 1d: 49 8b 04 24 mov (%r12),%rax 21: a8 03 test $0x3,%al 23: 0f 85 23 03 00 00 jne 0x34c * 29: 65 48 ff 00 incq %gs:(%rax) <-- trapping instruction 2d: e8 a6 40 ff ff call 0xffff40d8 32: 49 8d 7c 24 18 lea 0x18(%r12),%rdi 37: be 04 00 00 00 mov $0x4,%esi 3c: 48 rex.W 3d: 89 .byte 0x89 3e: 7c .byte 0x7c --- This report is generated by a bot. It may contain errors. See https://goo.gl/tpsmEJ for more information about syzbot. syzbot engineers can be reached at syzkaller@googlegroups.com. syzbot will keep track of this issue. See: https://goo.gl/tpsmEJ#status for how to communicate with syzbot. If the report is already addressed, let syzbot know by replying with: #syz fix: exact-commit-title If you want to overwrite report's subsystems, reply with: #syz set subsystems: new-subsystem (See the list of subsystem names on the web dashboard) If the report is a duplicate of another one, reply with: #syz dup: exact-subject-of-another-report If you want to undo deduplication, reply with: #syz undup