Hello,
syzbot found the following issue on:
HEAD commit: 4ba8e26127c3 Linux 4.14.262
git tree: linux-4.14.y
console output:
https://syzkaller.appspot.com/x/log.txt?x=13233717b00000
kernel config:
https://syzkaller.appspot.com/x/.config?x=51e11aabddb4cf62
dashboard link:
https://syzkaller.appspot.com/bug?extid=1943fcb08cd1de57ec0f
compiler: gcc version 10.2.1 20210110 (Debian 10.2.1-6)
Unfortunately, I don't have any reproducer for this issue yet.
IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by:
syzbot+1943fc...@syzkaller.appspotmail.com
audit: type=1800 audit(1642242141.815:25): pid=12022 uid=0 auid=4294967295 ses=4294967295 op="collect_data" cause="failed(directio)" comm="syz-executor.1" name="bus" dev="sda1" ino=14022 res=0
qnx4: no qnx4 filesystem (no root dir).
DEBUG_LOCKS_WARN_ON(depth <= 0)
------------[ cut here ]------------
WARNING: CPU: 1 PID: 11960 at kernel/locking/lockdep.c:3760 __lock_release kernel/locking/lockdep.c:3760 [inline]
WARNING: CPU: 1 PID: 11960 at kernel/locking/lockdep.c:3760 lock_release.cold+0x13/0xbf kernel/locking/lockdep.c:4017
Kernel panic - not syncing: panic_on_warn set ...
CPU: 1 PID: 11960 Comm: syz-executor.0 Not tainted 4.14.262-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
__dump_stack lib/dump_stack.c:17 [inline]
dump_stack+0x1b2/0x281 lib/dump_stack.c:58
panic+0x1f9/0x42d kernel/panic.c:183
__warn.cold+0x20/0x44 kernel/panic.c:547
report_bug+0x208/0x250 lib/bug.c:183
fixup_bug arch/x86/kernel/traps.c:177 [inline]
fixup_bug arch/x86/kernel/traps.c:172 [inline]
do_error_trap+0x195/0x2d0 arch/x86/kernel/traps.c:295
invalid_op+0x1b/0x40 arch/x86/entry/entry_64.S:964
RIP: 0010:__lock_release kernel/locking/lockdep.c:3760 [inline]
RIP: 0010:lock_release.cold+0x13/0xbf kernel/locking/lockdep.c:4017
RSP: 0018:ffff8880532d7948 EFLAGS: 00010086
RAX: 000000000000001f RBX: 1ffff1100a65af2c RCX: 0000000000000000
RDX: 0000000000000000 RSI: 0000000000000001 RDI: ffffed100a65af1f
RBP: ffff888098206c88 R08: 000000000000001f R09: 0000000000000000
R10: 0000000000000001 R11: 0000003f1f7d9e87 R12: ffffffff867fd173
R13: ffffffff8bec9d40 R14: ffff888052b22380 R15: 0000000000000000
__mutex_unlock_slowpath+0x75/0x770 kernel/locking/mutex.c:1018
rxrpc_do_sendmsg+0x513/0xfb0 net/rxrpc/sendmsg.c:643
rxrpc_sendmsg+0x3cf/0x5f0 net/rxrpc/af_rxrpc.c:543
sock_sendmsg_nosec net/socket.c:646 [inline]
sock_sendmsg+0xb5/0x100 net/socket.c:656
___sys_sendmsg+0x6c8/0x800 net/socket.c:2062
__sys_sendmsg+0xa3/0x120 net/socket.c:2096
SYSC_sendmsg net/socket.c:2107 [inline]
SyS_sendmsg+0x27/0x40 net/socket.c:2103
do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292
entry_SYSCALL_64_after_hwframe+0x46/0xbb
RIP: 0033:0x7fac02543fe9
RSP: 002b:00007fac00e56168 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007fac026571d0 RCX: 00007fac02543fe9
RDX: 0000000000000700 RSI: 0000000020000000 RDI: 0000000000000004
RBP: 00007fac0259e08d R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffdc38b0e9f R14: 00007fac00e56300 R15: 0000000000022000
Kernel Offset: disabled
Rebooting in 86400 seconds..
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