Bearer rejected, not supported in standalone mode ============================= WARNING: suspicious RCU usage 4.14.307-syzkaller #0 Not tainted ----------------------------- net/tipc/bearer.c:177 suspicious rcu_dereference_protected() usage! other info that might help us debug this: rcu_scheduler_active = 2, debug_locks = 1 2 locks held by syz-executor.1/9888: #0: (cb_lock){++++}, at: [] genl_rcv+0x15/0x40 net/netlink/genetlink.c:635 #1: (genl_mutex){+.+.}, at: [] genl_lock net/netlink/genetlink.c:33 [inline] #1: (genl_mutex){+.+.}, at: [] genl_rcv_msg+0x112/0x140 net/netlink/genetlink.c:623 stack backtrace: CPU: 1 PID: 9888 Comm: syz-executor.1 Not tainted 4.14.307-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/02/2023 Call Trace: __dump_stack lib/dump_stack.c:17 [inline] dump_stack+0x1b2/0x281 lib/dump_stack.c:58 tipc_bearer_find+0x1ff/0x2f0 net/tipc/bearer.c:177 tipc_nl_compat_link_set+0x40b/0xb90 net/tipc/netlink_compat.c:807 __tipc_nl_compat_doit net/tipc/netlink_compat.c:316 [inline] tipc_nl_compat_doit+0x192/0x5d0 net/tipc/netlink_compat.c:364 tipc_nl_compat_handle net/tipc/netlink_compat.c:1215 [inline] tipc_nl_compat_recv+0xa0b/0xae0 net/tipc/netlink_compat.c:1297 genl_family_rcv_msg+0x572/0xb20 net/netlink/genetlink.c:600 genl_rcv_msg+0xaf/0x140 net/netlink/genetlink.c:625 netlink_rcv_skb+0x125/0x390 net/netlink/af_netlink.c:2461 genl_rcv+0x24/0x40 net/netlink/genetlink.c:636 netlink_unicast_kernel net/netlink/af_netlink.c:1302 [inline] netlink_unicast+0x437/0x610 net/netlink/af_netlink.c:1328 netlink_sendmsg+0x651/0xbc0 net/netlink/af_netlink.c:1900 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+0x5e/0xd3 RIP: 0033:0x7f897affe0f9 RSP: 002b:00007f8979570168 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007f897b11df80 RCX: 00007f897affe0f9 RDX: 0000000000000000 RSI: 0000000020000180 RDI: 0000000000000003 RBP: 00007f897b059ae9 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffcfb19861f R14: 00007f8979570300 R15: 0000000000022000 Bearer rejected, not supported in standalone mode Bluetooth: hci3 command 0x0405 tx timeout audit: type=1804 audit(1678047645.561:5): pid=10172 uid=0 auid=4294967295 ses=4294967295 op="invalid_pcr" cause="open_writers" comm="syz-executor.1" name="/root/syzkaller-testdir3359154943/syzkaller.rhB3hc/43/bus" dev="sda1" ino=13951 res=1 syz-executor.2 (10168) used greatest stack depth: 23992 bytes left EXT4-fs (loop4): Unsupported blocksize for fs encryption xt_HMARK: hash modulus can't be zero x_tables: ip6_tables: TCPMSS target: only valid for protocol 6 audit: type=1326 audit(1678047646.802:6): auid=4294967295 uid=0 gid=0 ses=4294967295 pid=10274 comm="syz-executor.5" exe="/root/syz-executor.5" sig=0 arch=c000003e syscall=202 compat=0 ip=0x7fa8a4be30f9 code=0x7ffc0000 audit: type=1326 audit(1678047646.832:7): auid=4294967295 uid=0 gid=0 ses=4294967295 pid=10274 comm="syz-executor.5" exe="/root/syz-executor.5" sig=0 arch=c000003e syscall=226 compat=0 ip=0x7fa8a4be30f9 code=0x7ffc0000 audit: type=1326 audit(1678047646.832:8): auid=4294967295 uid=0 gid=0 ses=4294967295 pid=10274 comm="syz-executor.5" exe="/root/syz-executor.5" sig=0 arch=c000003e syscall=202 compat=0 ip=0x7fa8a4be30f9 code=0x7ffc0000 audit: type=1326 audit(1678047646.832:9): auid=4294967295 uid=0 gid=0 ses=4294967295 pid=10274 comm="syz-executor.5" exe="/root/syz-executor.5" sig=0 arch=c000003e syscall=41 compat=0 ip=0x7fa8a4be30f9 code=0x7ffc0000 audit: type=1326 audit(1678047646.832:10): auid=4294967295 uid=0 gid=0 ses=4294967295 pid=10274 comm="syz-executor.5" exe="/root/syz-executor.5" sig=0 arch=c000003e syscall=202 compat=0 ip=0x7fa8a4be30f9 code=0x7ffc0000 UDF-fs: error (device loop3): udf_process_sequence: Block 99 of volume descriptor sequence is corrupted or we could not read it UDF-fs: error (device loop3): udf_process_sequence: Block 1987 of volume descriptor sequence is corrupted or we could not read it UDF-fs: error (device loop3): udf_read_tagged: read failed, block=512, location=512 XFS (loop0): Mounting V4 Filesystem XFS (loop0): totally zeroed log XFS (loop0): Ending clean mount attempt to access beyond end of device loop0: rw=399361, want=65600, limit=65536 XFS (loop0): metadata I/O error: block 0x10000 ("xlog_iodone") error 5 numblks 64 audit: type=1804 audit(1678047648.112:11): pid=10357 uid=0 auid=4294967295 ses=4294967295 op="invalid_pcr" cause="open_writers" comm="syz-executor.2" name="/root/syzkaller-testdir503183292/syzkaller.K0MZpg/39/bus" dev="sda1" ino=14011 res=1 XFS (loop0): xfs_do_force_shutdown(0x2) called from line 1244 of file fs/xfs/xfs_log.c. Return address = 0xffffffff825f6d1b XFS (loop0): Log I/O Error Detected. Shutting down filesystem XFS (loop0): Unmounting Filesystem XFS (loop0): Please umount the filesystem and rectify the problem(s) audit: type=1800 audit(1678047648.152:12): pid=10357 uid=0 auid=4294967295 ses=4294967295 op="collect_data" cause="failed(directio)" comm="syz-executor.2" name="bus" dev="sda1" ino=14011 res=0 F2FS-fs (loop4): Unrecognized mount option "test_dummy_encryption" or missing value F2FS-fs (loop4): Unrecognized mount option "test_dummy_encryption" or missing value TCP: request_sock_TCPv6: Possible SYN flooding on port 20002. Sending cookies. Check SNMP counters. overlayfs: './file0' not a directory x_tables: ip6_tables: ERROR.0 target: invalid size 32 (kernel) != (user) 1 x_tables: ip6_tables: TCPMSS target: only valid for protocol 6 audit: type=1326 audit(1678047649.372:13): auid=4294967295 uid=0 gid=0 ses=4294967295 pid=10455 comm="syz-executor.4" exe="/root/syz-executor.4" sig=0 arch=c000003e syscall=202 compat=0 ip=0x7fdddeb0e0f9 code=0x7ffc0000 audit: type=1326 audit(1678047649.372:14): auid=4294967295 uid=0 gid=0 ses=4294967295 pid=10455 comm="syz-executor.4" exe="/root/syz-executor.4" sig=0 arch=c000003e syscall=202 compat=0 ip=0x7fdddeb0e0f9 code=0x7ffc0000 audit: type=1326 audit(1678047649.402:15): auid=4294967295 uid=0 gid=0 ses=4294967295 pid=10455 comm="syz-executor.4" exe="/root/syz-executor.4" sig=0 arch=c000003e syscall=225 compat=0 ip=0x7fdddeb0e0f9 code=0x7ffc0000 x_tables: ip6_tables: mh match: only valid for protocol 135