From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-io1-f69.google.com (mail-io1-f69.google.com [209.85.166.69]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 2FF2C259C for ; Thu, 10 Apr 2025 04:43:02 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.166.69 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1744260185; cv=none; b=peoGbkr+eGJY9Rjlwr14OgnslBc9a4yEDrqD0BTZ5ZPn9aNkPmjFv3bRyC6sQJx6qw1lOATerNbKbLK8vBUUVA1Vm7Dulq8I2RKERf7Jamu+jEw+z9tkKBJztHmeGRrKRNA70mUvrdDlqzLQCm3Sf6BWQAwa9ooSU4D2+LxT7XM= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1744260185; c=relaxed/simple; bh=5qDB1A741tq9yxqMEjEi0qotVMcBlK/2Usuf2TUm0EA=; h=MIME-Version:Date:In-Reply-To:Message-ID:Subject:From:To: Content-Type; b=P8alro77IiCFme12Boo5PkzEnksUZPXTCDrsjfFvRvfDwt8iXW3zSScrCXmbjKIft+rAtue/YvW/WxtMQrGoCy5V88xSPw4TrbxJxsHbDnzagNuxhDrX+lFu9tk1gDdpYpE4Cy7R0LQGuWAE6fkUchEEx45a4Wn+4st6DMhXdIU= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=fail (p=none dis=none) header.from=syzkaller.appspotmail.com; spf=pass smtp.mailfrom=M3KW2WVRGUFZ5GODRSRYTGD7.apphosting.bounces.google.com; arc=none smtp.client-ip=209.85.166.69 Authentication-Results: smtp.subspace.kernel.org; dmarc=fail (p=none dis=none) header.from=syzkaller.appspotmail.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=M3KW2WVRGUFZ5GODRSRYTGD7.apphosting.bounces.google.com Received: by mail-io1-f69.google.com with SMTP id ca18e2360f4ac-85b41b906b3so51066039f.0 for ; Wed, 09 Apr 2025 21:43:02 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1744260182; x=1744864982; h=to:from:subject:message-id:in-reply-to:date:mime-version :x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=swpjCqrL7HCuu/zXnUsI0yjwOLKo5bRSvMQrIRCr1VM=; b=p5VNFH1w54leQjoe25f67m1icn6gPy7pY0Atd/G4EA3SsRcqqM+0tbeJjGx/J9Jctq U0fP81zcLgTHyQPUHOr/uAGy4lll7qg9Ckb00s8+gmWsLRLFZiQ9xdmX3vtGNQfaOwA0 WpUK/xpws31OPmdKjBphDM1hmZnFt08+97fK3HEZ89On3v/Fqzl7U7FaAqzpUh3Pgo0b +zy2oxP5/ThFUNpMyeHNMpy9kxNbPu0/ImPE+RDPailLC4KQWEH0P2EEUX0YEoOZv4pk UxL5mZPE6ivri45WEeaJUPNqlfcUfiAtA3jqAX74wbHuDTunrUUh5ANXulPDQeSLPXpm ZLOg== X-Gm-Message-State: AOJu0Yzq+wBbz8GCs/Y5YnYTJZ6jhOBjL8Oo/C3nOdS2WTbuK7wihfuK qKfPhGsQVuukGEZSyErojRrKRq7wUZjVY8d1bdcH30dGSy7SMRNxz5XzX23WHtKORBgDqfoIHJP B+4NfyTsVerr+gLoB0bcclHLx1C82IgOUhuVDDBjQBbnHNQCtJHJBLdk= X-Google-Smtp-Source: AGHT+IFszUOL1h2bZ9QIQrcm0A6sPHp+j+f2RlY1aHpo/y3Kzv1TSFEDX0WKo75sRVQmrITckyVOV7m1ooNBLc9F8RexD91DAe1u Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6e02:3f05:b0:3d2:bac3:b45f with SMTP id e9e14a558f8ab-3d7e46e20b9mr18570025ab.4.1744260182307; Wed, 09 Apr 2025 21:43:02 -0700 (PDT) Date: Wed, 09 Apr 2025 21:43:02 -0700 In-Reply-To: <20250410005712.2532007-1-lizhi.xu@windriver.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <67f74c56.050a0220.25d1c8.000e.GAE@google.com> Subject: Re: [syzbot] [acpi?] KASAN: slab-use-after-free Read in software_node_notify_remove From: syzbot To: linux-kernel@vger.kernel.org, lizhi.xu@windriver.com, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8" Hello, syzbot has tested the proposed patch but the reproducer is still triggering an issue: KASAN: slab-use-after-free Read in software_node_notify_remove RBP: 00007f4f5e989090 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002 R13: 0000000000000000 R14: 00007f4f5dda5fa0 R15: 00007fffe901ed38 iommufd_mock iommufd_mock0: Adding to iommu group 0 ================================================================== BUG: KASAN: slab-use-after-free in software_node_notify_remove+0x1bc/0x1c0 drivers/base/swnode.c:1108 Read of size 1 at addr ffff888071ba7108 by task syz.0.18/6145 CPU: 1 UID: 0 PID: 6145 Comm: syz.0.18 Not tainted 6.15.0-rc1-syzkaller-g3b07108ada81-dirty #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025 Call Trace: __dump_stack lib/dump_stack.c:94 [inline] dump_stack_lvl+0x241/0x360 lib/dump_stack.c:120 print_address_description mm/kasan/report.c:408 [inline] print_report+0x16e/0x5b0 mm/kasan/report.c:521 kasan_report+0x143/0x180 mm/kasan/report.c:634 software_node_notify_remove+0x1bc/0x1c0 drivers/base/swnode.c:1108 device_platform_notify_remove drivers/base/core.c:2388 [inline] device_del+0x5d6/0xa10 drivers/base/core.c:3859 device_unregister+0x20/0xc0 drivers/base/core.c:3897 mock_dev_destroy drivers/iommu/iommufd/selftest.c:960 [inline] iommufd_test_mock_domain drivers/iommu/iommufd/selftest.c:1022 [inline] iommufd_test+0x3715/0x56a0 drivers/iommu/iommufd/selftest.c:1866 iommufd_fops_ioctl+0x4fc/0x610 drivers/iommu/iommufd/main.c:419 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:906 [inline] __se_sys_ioctl+0xf1/0x160 fs/ioctl.c:892 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f4f5db8d169 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f4f5e989038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007f4f5dda5fa0 RCX: 00007f4f5db8d169 RDX: 0000200000000200 RSI: 0000000000003ba0 RDI: 0000000000000003 RBP: 00007f4f5e989090 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002 R13: 0000000000000000 R14: 00007f4f5dda5fa0 R15: 00007fffe901ed38 Allocated by task 6145: kasan_save_stack mm/kasan/common.c:47 [inline] kasan_save_track+0x3f/0x80 mm/kasan/common.c:68 poison_kmalloc_redzone mm/kasan/common.c:377 [inline] __kasan_kmalloc+0x9d/0xb0 mm/kasan/common.c:394 kasan_kmalloc include/linux/kasan.h:260 [inline] __kmalloc_cache_noprof+0x236/0x370 mm/slub.c:4362 kmalloc_noprof include/linux/slab.h:905 [inline] kzalloc_noprof include/linux/slab.h:1039 [inline] swnode_register+0x5a/0x540 drivers/base/swnode.c:790 fwnode_create_software_node+0x199/0x1f0 drivers/base/swnode.c:949 device_create_managed_software_node+0xd5/0x1f0 drivers/base/swnode.c:1060 mock_dev_create drivers/iommu/iommufd/selftest.c:942 [inline] iommufd_test_mock_domain drivers/iommu/iommufd/selftest.c:989 [inline] iommufd_test+0x3335/0x56a0 drivers/iommu/iommufd/selftest.c:1866 iommufd_fops_ioctl+0x4fc/0x610 drivers/iommu/iommufd/main.c:419 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:906 [inline] __se_sys_ioctl+0xf1/0x160 fs/ioctl.c:892 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f Freed by task 6145: kasan_save_stack mm/kasan/common.c:47 [inline] kasan_save_track+0x3f/0x80 mm/kasan/common.c:68 kasan_save_free_info+0x40/0x50 mm/kasan/generic.c:576 poison_slab_object mm/kasan/common.c:247 [inline] __kasan_slab_free+0x59/0x70 mm/kasan/common.c:264 kasan_slab_free include/linux/kasan.h:233 [inline] slab_free_hook mm/slub.c:2389 [inline] slab_free mm/slub.c:4646 [inline] kfree+0x198/0x430 mm/slub.c:4845 kobject_cleanup lib/kobject.c:689 [inline] kobject_release lib/kobject.c:720 [inline] kref_put include/linux/kref.h:65 [inline] kobject_put+0x22f/0x480 lib/kobject.c:737 software_node_notify_remove+0x159/0x1c0 drivers/base/swnode.c:1106 device_platform_notify_remove drivers/base/core.c:2388 [inline] device_del+0x5d6/0xa10 drivers/base/core.c:3859 device_unregister+0x20/0xc0 drivers/base/core.c:3897 mock_dev_destroy drivers/iommu/iommufd/selftest.c:960 [inline] iommufd_test_mock_domain drivers/iommu/iommufd/selftest.c:1022 [inline] iommufd_test+0x3715/0x56a0 drivers/iommu/iommufd/selftest.c:1866 iommufd_fops_ioctl+0x4fc/0x610 drivers/iommu/iommufd/main.c:419 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:906 [inline] __se_sys_ioctl+0xf1/0x160 fs/ioctl.c:892 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f The buggy address belongs to the object at ffff888071ba7000 which belongs to the cache kmalloc-512 of size 512 The buggy address is located 264 bytes inside of freed 512-byte region [ffff888071ba7000, ffff888071ba7200) The buggy address belongs to the physical page: page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x71ba4 head: order:2 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0 flags: 0xfff00000000040(head|node=0|zone=1|lastcpupid=0x7ff) page_type: f5(slab) raw: 00fff00000000040 ffff88801b041c80 dead000000000100 dead000000000122 raw: 0000000000000000 0000000080100010 00000000f5000000 0000000000000000 head: 00fff00000000040 ffff88801b041c80 dead000000000100 dead000000000122 head: 0000000000000000 0000000080100010 00000000f5000000 0000000000000000 head: 00fff00000000002 ffffea0001c6e901 00000000ffffffff 00000000ffffffff head: ffffffffffffffff 0000000000000000 00000000ffffffff 0000000000000004 page dumped because: kasan: bad access detected page_owner tracks the page as allocated page last allocated via order 2, migratetype Unmovable, gfp_mask 0xd20c0(__GFP_IO|__GFP_FS|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), pid 5885, tgid 5885 (syz-executor), ts 87258936943, free_ts 87221957323 set_page_owner include/linux/page_owner.h:32 [inline] post_alloc_hook+0x1f4/0x240 mm/page_alloc.c:1717 prep_new_page mm/page_alloc.c:1725 [inline] get_page_from_freelist+0x352b/0x36c0 mm/page_alloc.c:3652 __alloc_frozen_pages_noprof+0x211/0x5b0 mm/page_alloc.c:4934 alloc_pages_mpol+0x339/0x690 mm/mempolicy.c:2301 alloc_slab_page mm/slub.c:2459 [inline] allocate_slab+0x8f/0x3a0 mm/slub.c:2623 new_slab mm/slub.c:2676 [inline] ___slab_alloc+0xc3b/0x1500 mm/slub.c:3862 __slab_alloc+0x58/0xa0 mm/slub.c:3952 __slab_alloc_node mm/slub.c:4027 [inline] slab_alloc_node mm/slub.c:4188 [inline] __kmalloc_cache_noprof+0x26a/0x370 mm/slub.c:4357 kmalloc_noprof include/linux/slab.h:905 [inline] kzalloc_noprof include/linux/slab.h:1039 [inline] mca_alloc net/ipv6/mcast.c:884 [inline] __ipv6_dev_mc_inc+0x431/0xac0 net/ipv6/mcast.c:975 ipv6_add_dev+0xe7a/0x1430 net/ipv6/addrconf.c:473 addrconf_notify+0x6a7/0x1020 net/ipv6/addrconf.c:3650 notifier_call_chain+0x1a5/0x3f0 kernel/notifier.c:85 call_netdevice_notifiers_extack net/core/dev.c:2221 [inline] call_netdevice_notifiers net/core/dev.c:2235 [inline] register_netdevice+0x16c0/0x1b80 net/core/dev.c:11054 veth_newlink+0x4c3/0xb80 drivers/net/veth.c:1818 rtnl_newlink_create+0x39b/0xcb0 net/core/rtnetlink.c:3833 __rtnl_newlink net/core/rtnetlink.c:3950 [inline] rtnl_newlink+0x18b0/0x1fe0 net/core/rtnetlink.c:4065 page last free pid 5885 tgid 5885 stack trace: reset_page_owner include/linux/page_owner.h:25 [inline] free_pages_prepare mm/page_alloc.c:1262 [inline] __free_frozen_pages+0xde8/0x10a0 mm/page_alloc.c:2680 discard_slab mm/slub.c:2720 [inline] __put_partials+0x160/0x1c0 mm/slub.c:3189 put_cpu_partial+0x17e/0x250 mm/slub.c:3264 __slab_free+0x294/0x390 mm/slub.c:4516 qlink_free mm/kasan/quarantine.c:163 [inline] qlist_free_all+0x9a/0x140 mm/kasan/quarantine.c:179 kasan_quarantine_reduce+0x14f/0x170 mm/kasan/quarantine.c:286 __kasan_slab_alloc+0x23/0x80 mm/kasan/common.c:329 kasan_slab_alloc include/linux/kasan.h:250 [inline] slab_post_alloc_hook mm/slub.c:4151 [inline] slab_alloc_node mm/slub.c:4200 [inline] __kmalloc_cache_noprof+0x1c8/0x370 mm/slub.c:4357 kmalloc_noprof include/linux/slab.h:905 [inline] kzalloc_noprof include/linux/slab.h:1039 [inline] ref_tracker_alloc+0x159/0x4c0 lib/ref_tracker.c:203 __netdev_tracker_alloc include/linux/netdevice.h:4331 [inline] netdev_hold include/linux/netdevice.h:4360 [inline] netdev_queue_add_kobject net/core/net-sysfs.c:1973 [inline] netdev_queue_update_kobjects+0x1df/0x740 net/core/net-sysfs.c:2035 register_queue_kobjects net/core/net-sysfs.c:2098 [inline] netdev_register_kobject+0x234/0x2f0 net/core/net-sysfs.c:2340 register_netdevice+0x12b0/0x1b80 net/core/dev.c:11016 veth_newlink+0x4c3/0xb80 drivers/net/veth.c:1818 rtnl_newlink_create+0x39b/0xcb0 net/core/rtnetlink.c:3833 __rtnl_newlink net/core/rtnetlink.c:3950 [inline] rtnl_newlink+0x18b0/0x1fe0 net/core/rtnetlink.c:4065 rtnetlink_rcv_msg+0x80f/0xd70 net/core/rtnetlink.c:6955 Memory state around the buggy address: ffff888071ba7000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff888071ba7080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb >ffff888071ba7100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ^ ffff888071ba7180: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff888071ba7200: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ================================================================== Tested on: commit: 3b07108a Merge tag 'linux_kselftest-fixes-6.15-rc2' of.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=17ae723f980000 kernel config: https://syzkaller.appspot.com/x/.config?x=eecd7902e39d7933 dashboard link: https://syzkaller.appspot.com/bug?extid=2ff22910687ee0dfd48e compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 patch: https://syzkaller.appspot.com/x/patch.diff?x=113e074c580000