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 D9214EC2 for ; Mon, 14 Jul 2025 04:33:04 +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=1752467586; cv=none; b=REpfLqxCK+zy4SkbJyJ7w1oEdTr8ZceT539oYe8ZMBkA+JOo6RVZ3HPhu07TjeFgTED6M6wFdBlO7630dHTSvbeNKH9NAjlcSVtLQiUcKpEy79ZVceoPPyKIZy4HoJO6vlyeHCd29u9Mcuy6k22KIwFq+lGbCS4BoiSGcDHAjjw= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1752467586; c=relaxed/simple; bh=dceJnZtNim1VLlIJIkYkUqKzGWcy3T04kIWeRoTqY+c=; h=MIME-Version:Date:In-Reply-To:Message-ID:Subject:From:To: Content-Type; b=Qe2KQ9q3j6HpMXIRvRiRPJzMcRVrCrSOdvEiKojJUY/HoTTaWoYGJcNAGBI2YVfLewRJ7WD1obllCyE2qxLH1YqZy1L0Edf0Gu4RT0zbGwmdkzNKmXKjsX9iH/6rByyUZeTM9fPCxszcxErXYhSNH7PEIMpQnPZ+FFIyXg73cok= 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-86cf0364dd2so684152539f.0 for ; Sun, 13 Jul 2025 21:33:04 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1752467584; x=1753072384; 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=2NXAyNhXpSfM925cg/SvFzHVVyHDric3bvc5YfrHr6A=; b=GjPyoZeJeG4PylWrDaRdVgcTEZlBWQkKYCdoq90LRHw/nmaPbo/T2OVHbi7deyHtnn dX7Wi0kN7vzU3DnFy2koa92MwoIjpA8w14zP7sEEXsWbvEHegf0BDcMLGwhcz//q8zPV o00GGGfH0ziXwQJNmwEMyl08MCf8YjA32+fuRHm2YkstTh2Qk1bKwFS0VzEbz08kqgXD Q7x/y+mv5yxw0Q3aOx3F9vrDkNO6eFmtPTfmiCWv9JAtrBrN1KcB8q7/xSElyjuX/oW1 toZ3H0octcqBsdC1Y7B/qpjXCEUlqF3Pj+TvHZHExv3QR/2cBfZXxgq/THPQrd625j8t Swlg== X-Forwarded-Encrypted: i=1; AJvYcCVK6ihjpYe7GVXicfxIRKVGBduawSYjB47mauQps1sPk7/a/PU0OJNEcSCvlbkpAjzXaQo+8hpU3jp0UK4=@vger.kernel.org X-Gm-Message-State: AOJu0Yyfd4Y6qxcU6Mh/vDmaW1WyzWov9x7RGSAlMAeb5V4AcDC5s9o2 JRzeL5eLvWnU35pdqNmqzE4OV102cceS2tosJAJFbcZ64+lyn3RrAIZvbOjcCjjxfdS1pas0uuc 72tNpzeZ/wbrSABXD7xUawiFp9AzY96Wt7XmEkLBy/EU8atSNlClvzWmQHJ0= X-Google-Smtp-Source: AGHT+IEiRDlqlDURLmAWuYvXxz6hXItGLsIdVL81mWeR85mkCdTAXEC05v4o/xZxBoD0jLZfI7qYetwz6u6EqEWExw7lPN9nEbtR Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6602:2c14:b0:867:8ef:69e8 with SMTP id ca18e2360f4ac-8797a77f3b5mr1102617839f.3.1752467583929; Sun, 13 Jul 2025 21:33:03 -0700 (PDT) Date: Sun, 13 Jul 2025 21:33:03 -0700 In-Reply-To: <20250714023645.3950-1-hdanton@sina.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <6874887f.a70a0220.3b380f.0047.GAE@google.com> Subject: Re: [syzbot] [lsm?] [net?] WARNING in kvfree_call_rcu From: syzbot To: hdanton@sina.com, linux-kernel@vger.kernel.org, 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: WARNING in kvfree_call_rcu ------------[ cut here ]------------ ODEBUG: activate active (active state 1) object: 000000005aaa2dd7 object type: rcu_head hint: 0x0 WARNING: CPU: 1 PID: 7479 at lib/debugobjects.c:615 debug_print_object lib/debugobjects.c:612 [inline] WARNING: CPU: 1 PID: 7479 at lib/debugobjects.c:615 debug_object_activate+0x344/0x460 lib/debugobjects.c:842 Modules linked in: CPU: 1 UID: 0 PID: 7479 Comm: syz.0.17 Not tainted 6.16.0-rc5-syzkaller-00067-gec4801305969-dirty #0 PREEMPT Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 pstate: 60400005 (nZCv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : debug_print_object lib/debugobjects.c:612 [inline] pc : debug_object_activate+0x344/0x460 lib/debugobjects.c:842 lr : debug_print_object lib/debugobjects.c:612 [inline] lr : debug_object_activate+0x344/0x460 lib/debugobjects.c:842 sp : ffff80009c5e76c0 x29: ffff80009c5e76c0 x28: ffff8000976d8000 x27: dfff800000000000 x26: ffff80008afc2440 x25: 0000000000000001 x24: ffff8000891ac638 x23: 0000000000000003 x22: ffff80008b5399e0 x21: 0000000000000000 x20: ffff80008afc2440 x19: ffff8000891ac638 x18: 0000000000000000 x17: 6464326161613530 x16: ffff80008aefc690 x15: 0000000000000001 x14: 1fffe000337d88e2 x13: 0000000000000000 x12: 0000000000000000 x11: ffff6000337d88e3 x10: 0000000000ff0100 x9 : 598454906fc2c600 x8 : 598454906fc2c600 x7 : 0000000000000001 x6 : 0000000000000001 x5 : ffff80009c5e7018 x4 : ffff80008f766be0 x3 : ffff8000807bcfac x2 : 0000000000000001 x1 : 0000000100000201 x0 : 0000000000000000 Call trace: debug_print_object lib/debugobjects.c:612 [inline] (P) debug_object_activate+0x344/0x460 lib/debugobjects.c:842 (P) debug_rcu_head_queue kernel/rcu/rcu.h:236 [inline] kvfree_call_rcu+0x4c/0x3f0 mm/slab_common.c:1953 cipso_v4_sock_setattr+0x2f0/0x3f4 net/ipv4/cipso_ipv4.c:1914 netlbl_sock_setattr+0x240/0x334 net/netlabel/netlabel_kapi.c:1000 smack_netlbl_add+0xf8/0x280 security/smack/smack_lsm.c:2582 smack_inode_setsecurity+0x378/0x430 security/smack/smack_lsm.c:2916 security_inode_setsecurity+0x118/0x3c0 security/security.c:2706 __vfs_setxattr_noperm+0x174/0x5c4 fs/xattr.c:251 __vfs_setxattr_locked+0x1ec/0x218 fs/xattr.c:295 vfs_setxattr+0x158/0x2ac fs/xattr.c:321 do_setxattr fs/xattr.c:636 [inline] file_setxattr+0x1b8/0x294 fs/xattr.c:646 path_setxattrat+0x2ac/0x320 fs/xattr.c:711 __do_sys_fsetxattr fs/xattr.c:761 [inline] __se_sys_fsetxattr fs/xattr.c:758 [inline] __arm64_sys_fsetxattr+0xc0/0xdc fs/xattr.c:758 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:49 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:132 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:151 el0_svc+0x58/0x180 arch/arm64/kernel/entry-common.c:879 el0t_64_sync_handler+0x84/0x12c arch/arm64/kernel/entry-common.c:898 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:596 irq event stamp: 191 hardirqs last enabled at (190): [] __up_console_sem kernel/printk/printk.c:344 [inline] hardirqs last enabled at (190): [] __console_unlock+0x70/0xc4 kernel/printk/printk.c:2885 hardirqs last disabled at (191): [] el1_brk64+0x1c/0x48 arch/arm64/kernel/entry-common.c:574 softirqs last enabled at (146): [] local_bh_enable+0x10/0x34 include/linux/bottom_half.h:32 softirqs last disabled at (162): [] local_bh_disable+0x10/0x34 include/linux/bottom_half.h:19 ---[ end trace 0000000000000000 ]--- ------------[ cut here ]------------ ODEBUG: active_state active (active state 1) object: 000000005aaa2dd7 object type: rcu_head hint: 0x0 WARNING: CPU: 1 PID: 7479 at lib/debugobjects.c:615 debug_print_object lib/debugobjects.c:612 [inline] WARNING: CPU: 1 PID: 7479 at lib/debugobjects.c:615 debug_object_active_state+0x28c/0x350 lib/debugobjects.c:1064 Modules linked in: CPU: 1 UID: 0 PID: 7479 Comm: syz.0.17 Tainted: G W 6.16.0-rc5-syzkaller-00067-gec4801305969-dirty #0 PREEMPT Tainted: [W]=WARN Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 pstate: 60400005 (nZCv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : debug_print_object lib/debugobjects.c:612 [inline] pc : debug_object_active_state+0x28c/0x350 lib/debugobjects.c:1064 lr : debug_print_object lib/debugobjects.c:612 [inline] lr : debug_object_active_state+0x28c/0x350 lib/debugobjects.c:1064 sp : ffff80009c5e76b0 x29: ffff80009c5e76c0 x28: ffff80008f671000 x27: dfff800000000000 x26: 0000000000000003 x25: 0000000000000000 x24: ffff0000d3aa8888 x23: 0000000000000001 x22: ffff80008afc2440 x21: ffff80008b5399e0 x20: 0000000000000000 x19: ffff8000891ac638 x18: 0000000000000000 x17: 6161353030303030 x16: ffff80008ae63f48 x15: ffff700011ede144 x14: 1ffff00011ede144 x13: 0000000000000004 x12: ffffffffffffffff x11: ffff700011ede144 x10: 0000000000ff0100 x9 : 598454906fc2c600 x8 : 598454906fc2c600 x7 : 0000000000000001 x6 : 0000000000000001 x5 : ffff80009c5e6ff8 x4 : ffff80008f766be0 x3 : ffff80008054d314 x2 : 0000000000000000 x1 : 0000000000000201 x0 : 0000000000000000 Call trace: debug_print_object lib/debugobjects.c:612 [inline] (P) debug_object_active_state+0x28c/0x350 lib/debugobjects.c:1064 (P) debug_rcu_head_queue kernel/rcu/rcu.h:237 [inline] kvfree_call_rcu+0x64/0x3f0 mm/slab_common.c:1953 cipso_v4_sock_setattr+0x2f0/0x3f4 net/ipv4/cipso_ipv4.c:1914 netlbl_sock_setattr+0x240/0x334 net/netlabel/netlabel_kapi.c:1000 smack_netlbl_add+0xf8/0x280 security/smack/smack_lsm.c:2582 smack_inode_setsecurity+0x378/0x430 security/smack/smack_lsm.c:2916 security_inode_setsecurity+0x118/0x3c0 security/security.c:2706 __vfs_setxattr_noperm+0x174/0x5c4 fs/xattr.c:251 __vfs_setxattr_locked+0x1ec/0x218 fs/xattr.c:295 vfs_setxattr+0x158/0x2ac fs/xattr.c:321 do_setxattr fs/xattr.c:636 [inline] file_setxattr+0x1b8/0x294 fs/xattr.c:646 path_setxattrat+0x2ac/0x320 fs/xattr.c:711 __do_sys_fsetxattr fs/xattr.c:761 [inline] __se_sys_fsetxattr fs/xattr.c:758 [inline] __arm64_sys_fsetxattr+0xc0/0xdc fs/xattr.c:758 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:49 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:132 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:151 el0_svc+0x58/0x180 arch/arm64/kernel/entry-common.c:879 el0t_64_sync_handler+0x84/0x12c arch/arm64/kernel/entry-common.c:898 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:596 irq event stamp: 219 hardirqs last enabled at (218): [] __up_console_sem kernel/printk/printk.c:344 [inline] hardirqs last enabled at (218): [] __console_unlock+0x70/0xc4 kernel/printk/printk.c:2885 hardirqs last disabled at (219): [] el1_brk64+0x1c/0x48 arch/arm64/kernel/entry-common.c:574 softirqs last enabled at (146): [] local_bh_enable+0x10/0x34 include/linux/bottom_half.h:32 softirqs last disabled at (162): [] local_bh_disable+0x10/0x34 include/linux/bottom_half.h:19 ---[ end trace 0000000000000000 ]--- ------------[ cut here ]------------ kvfree_call_rcu(): Double-freed call. rcu_head 000000005aaa2dd7 WARNING: CPU: 1 PID: 7479 at mm/slab_common.c:1956 kvfree_call_rcu+0x94/0x3f0 mm/slab_common.c:1955 Modules linked in: CPU: 1 UID: 0 PID: 7479 Comm: syz.0.17 Tainted: G W 6.16.0-rc5-syzkaller-00067-gec4801305969-dirty #0 PREEMPT Tainted: [W]=WARN Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 pstate: 60400005 (nZCv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : kvfree_call_rcu+0x94/0x3f0 mm/slab_common.c:1955 lr : kvfree_call_rcu+0x94/0x3f0 mm/slab_common.c:1955 sp : ffff80009c5e7720 x29: ffff80009c5e7720 x28: 00000000fffffff5 x27: 1fffe00019c7bee3 x26: dfff800000000000 x25: ffff0000ca2107ee x24: 0000000000000017 x23: ffff8000891ac638 x22: 00000000ffffffea x21: ffff8000891ac638 x20: ffff8000891ac638 x19: ffff80008afc2440 x18: 0000000000000000 x17: 0000000000000000 x16: ffff80008ae63f48 x15: ffff700011ede144 x14: 1ffff00011ede144 x13: 0000000000000004 x12: ffffffffffffffff x11: ffff700011ede144 x10: 0000000000ff0100 x9 : 598454906fc2c600 x8 : 598454906fc2c600 x7 : 0000000000000001 x6 : 0000000000000001 x5 : ffff80009c5e7078 x4 : ffff80008f766be0 x3 : ffff80008054d314 x2 : 0000000000000000 x1 : 0000000000000201 x0 : 0000000000000000 Call trace: kvfree_call_rcu+0x94/0x3f0 mm/slab_common.c:1955 (P) cipso_v4_sock_setattr+0x2f0/0x3f4 net/ipv4/cipso_ipv4.c:1914 netlbl_sock_setattr+0x240/0x334 net/netlabel/netlabel_kapi.c:1000 smack_netlbl_add+0xf8/0x280 security/smack/smack_lsm.c:2582 smack_inode_setsecurity+0x378/0x430 security/smack/smack_lsm.c:2916 security_inode_setsecurity+0x118/0x3c0 security/security.c:2706 __vfs_setxattr_noperm+0x174/0x5c4 fs/xattr.c:251 __vfs_setxattr_locked+0x1ec/0x218 fs/xattr.c:295 vfs_setxattr+0x158/0x2ac fs/xattr.c:321 do_setxattr fs/xattr.c:636 [inline] file_setxattr+0x1b8/0x294 fs/xattr.c:646 path_setxattrat+0x2ac/0x320 fs/xattr.c:711 __do_sys_fsetxattr fs/xattr.c:761 [inline] __se_sys_fsetxattr fs/xattr.c:758 [inline] __arm64_sys_fsetxattr+0xc0/0xdc fs/xattr.c:758 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:49 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:132 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:151 el0_svc+0x58/0x180 arch/arm64/kernel/entry-common.c:879 el0t_64_sync_handler+0x84/0x12c arch/arm64/kernel/entry-common.c:898 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:596 irq event stamp: 245 hardirqs last enabled at (244): [] __up_console_sem kernel/printk/printk.c:344 [inline] hardirqs last enabled at (244): [] __console_unlock+0x70/0xc4 kernel/printk/printk.c:2885 hardirqs last disabled at (245): [] el1_brk64+0x1c/0x48 arch/arm64/kernel/entry-common.c:574 softirqs last enabled at (146): [] local_bh_enable+0x10/0x34 include/linux/bottom_half.h:32 softirqs last disabled at (162): [] local_bh_disable+0x10/0x34 include/linux/bottom_half.h:19 ---[ end trace 0000000000000000 ]--- Tested on: commit: ec480130 Merge branches 'for-next/core' and 'for-next/.. git tree: git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci console output: https://syzkaller.appspot.com/x/log.txt?x=14c9118c580000 kernel config: https://syzkaller.appspot.com/x/.config?x=9e99b6fcd403d050 dashboard link: https://syzkaller.appspot.com/bug?extid=40bf00346c3fe40f90f2 compiler: Debian clang version 20.1.7 (++20250616065708+6146a88f6049-1~exp1~20250616065826.132), Debian LLD 20.1.7 userspace arch: arm64 patch: https://syzkaller.appspot.com/x/patch.diff?x=12a9418c580000