audit: type=1804 audit(1677521706.295:2): pid=9411 uid=0 auid=4294967295 ses=4294967295 op="invalid_pcr" cause="open_writers" comm="syz-executor.0" name="/root/syzkaller-testdir3294587106/syzkaller.7ShA4F/4/bus/bus" dev="loop0" ino=4 res=1
batman_adv: The newly added mac address (aa:aa:aa:aa:aa:3f) already exists on: batadv_slave_1
================================================
WARNING: lock held when returning to user space!
4.14.307-syzkaller #0 Not tainted
batman_adv: It is strongly recommended to keep mac addresses unique to avoid problems!
------------------------------------------------
syz-executor.0/9411 is leaving the kernel with locks still held!
1 lock held by syz-executor.0/9411:
#0: (sb_writers#13){.+.+}, at: [<ffffffff818e21ad>] sb_start_write include/linux/fs.h:1551 [inline]
#0: (sb_writers#13){.+.+}, at: [<ffffffff818e21ad>] mnt_want_write_file+0xfd/0x3b0 fs/namespace.c:497
batman_adv: The newly added mac address (aa:aa:aa:aa:aa:3f) already exists on: batadv_slave_1
batman_adv: It is strongly recommended to keep mac addresses unique to avoid problems!
batman_adv: The newly added mac address (aa:aa:aa:aa:aa:3f) already exists on: batadv_slave_1
batman_adv: It is strongly recommended to keep mac addresses unique to avoid problems!
batman_adv: The newly added mac address (aa:aa:aa:aa:aa:3f) already exists on: batadv_slave_1
batman_adv: It is strongly recommended to keep mac addresses unique to avoid problems!
batman_adv: The newly added mac address (aa:aa:aa:aa:aa:3f) already exists on: batadv_slave_1
batman_adv: It is strongly recommended to keep mac addresses unique to avoid problems!
------------[ cut here ]------------
IPv6: ADDRCONF(NETDEV_UP): batadv_slave_1: link is not ready
WARNING: CPU: 1 PID: 7986 at fs/namespace.c:1178 cleanup_mnt+0x222/0x2c0 fs/namespace.c:1178
Kernel panic - not syncing: kernel: panic_on_warn set ...
CPU: 1 PID: 7986 Comm: syz-executor.0 Not tainted 4.14.307-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/16/2023
Call Trace:
__dump_stack lib/dump_stack.c:17 [inline]
dump_stack+0x1b2/0x281 lib/dump_stack.c:58
panic+0x21d/0x451 kernel/panic.c:247
check_panic_on_warn.cold+0x19/0x35 kernel/panic.c:171
__warn+0xdf/0x1e0 kernel/panic.c:603
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:967
RIP: 0010:cleanup_mnt+0x222/0x2c0 fs/namespace.c:1178
RSP: 0018:ffff8880b3e0fe18 EFLAGS: 00010297
RAX: ffff88809f43a140 RBX: dffffc0000000000 RCX: 0000000000000002
RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffffffff8a094768
RBP: 0000000000000008 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000000 R11: ffff88809f43a140 R12: ffff8880968f9000
R13: 0000000000000001 R14: 0000000000000007 R15: fffffbfff1412926
task_work_run+0x11f/0x190 kernel/task_work.c:113
tracehook_notify_resume include/linux/tracehook.h:191 [inline]
exit_to_usermode_loop+0x1ad/0x200 arch/x86/entry/common.c:164
prepare_exit_to_usermode arch/x86/entry/common.c:199 [inline]
syscall_return_slowpath arch/x86/entry/common.c:270 [inline]
do_syscall_64+0x4a3/0x640 arch/x86/entry/common.c:297
entry_SYSCALL_64_after_hwframe+0x5e/0xd3
RIP: 0033:0x7fe019c35567
RSP: 002b:00007ffe723e1d28 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007fe019c35567
RDX: 00007ffe723e1df7 RSI: 000000000000000a RDI: 00007ffe723e1df0
RBP: 00007ffe723e1df0 R08: 00000000ffffffff R09: 00007ffe723e1bc0
R10: 0000555555c6d8e3 R11: 0000000000000246 R12: 00007fe019c8eb24
R13: 00007ffe723e2eb0 R14: 0000555555c6d810 R15: 00007ffe723e2ef0
Kernel Offset: disabled
Rebooting in 86400 seconds..