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to agor...@linux.ibm.com, ali...@linux.alibaba.com, da...@davemloft.net, edum...@google.com, gu...@linux.alibaba.com, ja...@linux.ibm.com, ku...@kernel.org, linux-...@vger.kernel.org, linux...@vger.kernel.org, net...@vger.kernel.org, pab...@redhat.com, syzkall...@googlegroups.com, ton...@linux.alibaba.com, wen...@linux.ibm.com
Hello,
syzbot found the following issue on:
HEAD commit: 4854cf9c61d0 Merge tag 'mips-fixes_6.8_1' of git://git.ker..
git tree: upstream
console output:
https://syzkaller.appspot.com/x/log.txt?x=149d01efe80000
kernel config:
https://syzkaller.appspot.com/x/.config?x=e1bd33f45956bbc2
dashboard link:
https://syzkaller.appspot.com/bug?extid=ab2213db98841b6ead07
compiler: Debian clang version 15.0.6, 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/e44f160651d1/disk-4854cf9c.raw.xz
vmlinux:
https://storage.googleapis.com/syzbot-assets/f6a2062d07e6/vmlinux-4854cf9c.xz
kernel image:
https://storage.googleapis.com/syzbot-assets/3d179908ef3c/bzImage-4854cf9c.xz
IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by:
syzbot+ab2213...@syzkaller.appspotmail.com
==================================================================
BUG: KCSAN: data-race in __sys_connect / smc_switch_to_fallback
write to 0xffff88812a230bc8 of 8 bytes by task 1831 on cpu 1:
smc_switch_to_fallback+0x453/0x740 net/smc/af_smc.c:924
smc_sendmsg+0xd6/0x330 net/smc/af_smc.c:2772
sock_sendmsg_nosec net/socket.c:730 [inline]
__sock_sendmsg net/socket.c:745 [inline]
____sys_sendmsg+0x37c/0x4d0 net/socket.c:2584
___sys_sendmsg net/socket.c:2638 [inline]
__sys_sendmsg+0x1e9/0x270 net/socket.c:2667
__do_sys_sendmsg net/socket.c:2676 [inline]
__se_sys_sendmsg net/socket.c:2674 [inline]
__x64_sys_sendmsg+0x46/0x50 net/socket.c:2674
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0x59/0x120 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x63/0x6b
read to 0xffff88812a230bc8 of 8 bytes by task 1833 on cpu 0:
sock_from_file net/socket.c:514 [inline]
__sys_connect_file net/socket.c:2037 [inline]
__sys_connect+0x11d/0x1b0 net/socket.c:2065
__do_sys_connect net/socket.c:2075 [inline]
__se_sys_connect net/socket.c:2072 [inline]
__x64_sys_connect+0x41/0x50 net/socket.c:2072
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0x59/0x120 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x63/0x6b
value changed: 0xffff8881293bc000 -> 0xffff8881293bf400
Reported by Kernel Concurrency Sanitizer on:
CPU: 0 PID: 1833 Comm: syz-executor.0 Not tainted 6.8.0-rc1-syzkaller-00385-g4854cf9c61d0 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023
==================================================================
---
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