From: syzbot <syzbot+989b6c53cd6d6ec47ab2@syzkaller.appspotmail.com>
To: davem@davemloft.net, edumazet@google.com, kuba@kernel.org,
linux-kernel@vger.kernel.org, netdev@vger.kernel.org,
pabeni@redhat.com, syzkaller-bugs@googlegroups.com
Subject: [syzbot] [net?] memory leak in copy_net_ns (2)
Date: Fri, 01 Dec 2023 08:14:21 -0800 [thread overview]
Message-ID: <0000000000009fffb7060b750f4f@google.com> (raw)
Hello,
syzbot found the following issue on:
HEAD commit: e017769f4ce2 Merge tag 'for-6.6-rc7-tag' of git://git.kern..
git tree: upstream
console output: https://syzkaller.appspot.com/x/log.txt?x=10277593680000
kernel config: https://syzkaller.appspot.com/x/.config?x=8c4e4700f1727d30
dashboard link: https://syzkaller.appspot.com/bug?extid=989b6c53cd6d6ec47ab2
compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40
syz repro: https://syzkaller.appspot.com/x/repro.syz?x=174e61ed680000
Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/52a9cd027b72/disk-e017769f.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/646078695995/vmlinux-e017769f.xz
kernel image: https://storage.googleapis.com/syzbot-assets/a78855f93880/bzImage-e017769f.xz
IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+989b6c53cd6d6ec47ab2@syzkaller.appspotmail.com
BUG: memory leak
unreferenced object 0xffff88810e8d3660 (size 32):
comm "syz-executor.3", pid 5088, jiffies 4294979538 (age 423.340s)
hex dump (first 32 bytes):
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
00 00 00 00 01 00 00 00 00 00 00 00 00 00 00 00 ................
backtrace:
[<ffffffff81574aa5>] kmalloc_trace+0x25/0x90 mm/slab_common.c:1117
[<ffffffff83eb94f0>] kmalloc include/linux/slab.h:599 [inline]
[<ffffffff83eb94f0>] kzalloc include/linux/slab.h:720 [inline]
[<ffffffff83eb94f0>] net_alloc net/core/net_namespace.c:422 [inline]
[<ffffffff83eb94f0>] copy_net_ns+0xc0/0x3d0 net/core/net_namespace.c:476
[<ffffffff812db5d7>] create_new_namespaces+0x197/0x500 kernel/nsproxy.c:110
[<ffffffff812dc012>] unshare_nsproxy_namespaces+0xa2/0x120 kernel/nsproxy.c:228
[<ffffffff81293f84>] ksys_unshare+0x314/0x610 kernel/fork.c:3435
[<ffffffff81294296>] __do_sys_unshare kernel/fork.c:3506 [inline]
[<ffffffff81294296>] __se_sys_unshare kernel/fork.c:3504 [inline]
[<ffffffff81294296>] __x64_sys_unshare+0x16/0x20 kernel/fork.c:3504
[<ffffffff84b2b548>] do_syscall_x64 arch/x86/entry/common.c:50 [inline]
[<ffffffff84b2b548>] do_syscall_64+0x38/0xb0 arch/x86/entry/common.c:80
[<ffffffff84c0008b>] entry_SYSCALL_64_after_hwframe+0x63/0xcd
BUG: memory leak
unreferenced object 0xffff88810e8d3fa0 (size 32):
comm "syz-executor.4", pid 5078, jiffies 4294979546 (age 423.260s)
hex dump (first 32 bytes):
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
00 00 00 00 01 00 00 00 00 00 00 00 00 00 00 00 ................
backtrace:
[<ffffffff81574aa5>] kmalloc_trace+0x25/0x90 mm/slab_common.c:1117
[<ffffffff83eb94f0>] kmalloc include/linux/slab.h:599 [inline]
[<ffffffff83eb94f0>] kzalloc include/linux/slab.h:720 [inline]
[<ffffffff83eb94f0>] net_alloc net/core/net_namespace.c:422 [inline]
[<ffffffff83eb94f0>] copy_net_ns+0xc0/0x3d0 net/core/net_namespace.c:476
[<ffffffff812db5d7>] create_new_namespaces+0x197/0x500 kernel/nsproxy.c:110
[<ffffffff812dc012>] unshare_nsproxy_namespaces+0xa2/0x120 kernel/nsproxy.c:228
[<ffffffff81293f84>] ksys_unshare+0x314/0x610 kernel/fork.c:3435
[<ffffffff81294296>] __do_sys_unshare kernel/fork.c:3506 [inline]
[<ffffffff81294296>] __se_sys_unshare kernel/fork.c:3504 [inline]
[<ffffffff81294296>] __x64_sys_unshare+0x16/0x20 kernel/fork.c:3504
[<ffffffff84b2b548>] do_syscall_x64 arch/x86/entry/common.c:50 [inline]
[<ffffffff84b2b548>] do_syscall_64+0x38/0xb0 arch/x86/entry/common.c:80
[<ffffffff84c0008b>] entry_SYSCALL_64_after_hwframe+0x63/0xcd
BUG: memory leak
unreferenced object 0xffff888111239400 (size 32):
comm "syz-executor.1", pid 5075, jiffies 4294979553 (age 423.190s)
hex dump (first 32 bytes):
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
00 00 00 00 01 00 00 00 00 00 00 00 00 00 00 00 ................
backtrace:
[<ffffffff81574aa5>] kmalloc_trace+0x25/0x90 mm/slab_common.c:1117
[<ffffffff83eb94f0>] kmalloc include/linux/slab.h:599 [inline]
[<ffffffff83eb94f0>] kzalloc include/linux/slab.h:720 [inline]
[<ffffffff83eb94f0>] net_alloc net/core/net_namespace.c:422 [inline]
[<ffffffff83eb94f0>] copy_net_ns+0xc0/0x3d0 net/core/net_namespace.c:476
[<ffffffff812db5d7>] create_new_namespaces+0x197/0x500 kernel/nsproxy.c:110
[<ffffffff812dc012>] unshare_nsproxy_namespaces+0xa2/0x120 kernel/nsproxy.c:228
[<ffffffff81293f84>] ksys_unshare+0x314/0x610 kernel/fork.c:3435
[<ffffffff81294296>] __do_sys_unshare kernel/fork.c:3506 [inline]
[<ffffffff81294296>] __se_sys_unshare kernel/fork.c:3504 [inline]
[<ffffffff81294296>] __x64_sys_unshare+0x16/0x20 kernel/fork.c:3504
[<ffffffff84b2b548>] do_syscall_x64 arch/x86/entry/common.c:50 [inline]
[<ffffffff84b2b548>] do_syscall_64+0x38/0xb0 arch/x86/entry/common.c:80
[<ffffffff84c0008b>] entry_SYSCALL_64_after_hwframe+0x63/0xcd
BUG: memory leak
unreferenced object 0xffff888111239840 (size 32):
comm "syz-executor.7", pid 5076, jiffies 4294979555 (age 423.170s)
hex dump (first 32 bytes):
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
00 00 00 00 01 00 00 00 00 00 00 00 00 00 00 00 ................
backtrace:
[<ffffffff81574aa5>] kmalloc_trace+0x25/0x90 mm/slab_common.c:1117
[<ffffffff83eb94f0>] kmalloc include/linux/slab.h:599 [inline]
[<ffffffff83eb94f0>] kzalloc include/linux/slab.h:720 [inline]
[<ffffffff83eb94f0>] net_alloc net/core/net_namespace.c:422 [inline]
[<ffffffff83eb94f0>] copy_net_ns+0xc0/0x3d0 net/core/net_namespace.c:476
[<ffffffff812db5d7>] create_new_namespaces+0x197/0x500 kernel/nsproxy.c:110
[<ffffffff812dc012>] unshare_nsproxy_namespaces+0xa2/0x120 kernel/nsproxy.c:228
[<ffffffff81293f84>] ksys_unshare+0x314/0x610 kernel/fork.c:3435
[<ffffffff81294296>] __do_sys_unshare kernel/fork.c:3506 [inline]
[<ffffffff81294296>] __se_sys_unshare kernel/fork.c:3504 [inline]
[<ffffffff81294296>] __x64_sys_unshare+0x16/0x20 kernel/fork.c:3504
[<ffffffff84b2b548>] do_syscall_x64 arch/x86/entry/common.c:50 [inline]
[<ffffffff84b2b548>] do_syscall_64+0x38/0xb0 arch/x86/entry/common.c:80
[<ffffffff84c0008b>] entry_SYSCALL_64_after_hwframe+0x63/0xcd
BUG: memory leak
unreferenced object 0xffff888143eae6c0 (size 32):
comm "syz-executor.6", pid 5077, jiffies 4294979559 (age 423.180s)
hex dump (first 32 bytes):
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
00 00 00 00 01 00 00 00 00 00 00 00 00 00 00 00 ................
backtrace:
[<ffffffff81574aa5>] kmalloc_trace+0x25/0x90 mm/slab_common.c:1117
[<ffffffff83eb94f0>] kmalloc include/linux/slab.h:599 [inline]
[<ffffffff83eb94f0>] kzalloc include/linux/slab.h:720 [inline]
[<ffffffff83eb94f0>] net_alloc net/core/net_namespace.c:422 [inline]
[<ffffffff83eb94f0>] copy_net_ns+0xc0/0x3d0 net/core/net_namespace.c:476
[<ffffffff812db5d7>] create_new_namespaces+0x197/0x500 kernel/nsproxy.c:110
[<ffffffff812dc012>] unshare_nsproxy_namespaces+0xa2/0x120 kernel/nsproxy.c:228
[<ffffffff81293f84>] ksys_unshare+0x314/0x610 kernel/fork.c:3435
[<ffffffff81294296>] __do_sys_unshare kernel/fork.c:3506 [inline]
[<ffffffff81294296>] __se_sys_unshare kernel/fork.c:3504 [inline]
[<ffffffff81294296>] __x64_sys_unshare+0x16/0x20 kernel/fork.c:3504
[<ffffffff84b2b548>] do_syscall_x64 arch/x86/entry/common.c:50 [inline]
[<ffffffff84b2b548>] do_syscall_64+0x38/0xb0 arch/x86/entry/common.c:80
[<ffffffff84c0008b>] entry_SYSCALL_64_after_hwframe+0x63/0xcd
[ 846.
---
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 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.
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
reply other threads:[~2023-12-01 16:14 UTC|newest]
Thread overview: [no followups] expand[flat|nested] mbox.gz Atom feed
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=0000000000009fffb7060b750f4f@google.com \
--to=syzbot+989b6c53cd6d6ec47ab2@syzkaller.appspotmail.com \
--cc=davem@davemloft.net \
--cc=edumazet@google.com \
--cc=kuba@kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=netdev@vger.kernel.org \
--cc=pabeni@redhat.com \
--cc=syzkaller-bugs@googlegroups.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.