netlink: 28 bytes leftover after parsing attributes in process `syz-executor.2'. ============================= WARNING: suspicious RCU usage 4.14.306-syzkaller #0 Not tainted ----------------------------- net/sched/act_sample.c:95 suspicious rcu_dereference_protected() usage! other info that might help us debug this: xt_SECMARK: target only valid in the 'mangle' or 'security' tables, not 'filter'. rcu_scheduler_active = 2, debug_locks = 1 1 lock held by syz-executor.2/10977: #0: (rtnl_mutex){+.+.}, at: [] rtnl_lock net/core/rtnetlink.c:72 [inline] #0: (rtnl_mutex){+.+.}, at: [] rtnetlink_rcv_msg+0x31d/0xb10 net/core/rtnetlink.c:4317 stack backtrace: CPU: 1 PID: 10977 Comm: syz-executor.2 Not tainted 4.14.306-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/21/2023 Call Trace: __dump_stack lib/dump_stack.c:17 [inline] dump_stack+0x1b2/0x281 lib/dump_stack.c:58 tcf_sample_init+0x71c/0x8c0 net/sched/act_sample.c:95 tcf_action_init_1+0x51a/0x9e0 net/sched/act_api.c:691 tcf_action_init+0x26d/0x400 net/sched/act_api.c:760 tcf_action_add net/sched/act_api.c:1088 [inline] tc_ctl_action+0x2e3/0x510 net/sched/act_api.c:1140 rtnetlink_rcv_msg+0x3be/0xb10 net/core/rtnetlink.c:4322 netlink_rcv_skb+0x125/0x390 net/netlink/af_netlink.c:2461 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: 0033:0x7fdb52dbc0f9 RSP: 002b:00007fdb5132e168 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007fdb52edbf80 RCX: 00007fdb52dbc0f9 RDX: 0000000000000000 RSI: 0000000020002980 RDI: 0000000000000003 RBP: 00007fdb52e17ae9 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fff9086084f R14: 00007fdb5132e300 R15: 0000000000022000 IPv6: ADDRCONF(NETDEV_CHANGE): vcan0: link becomes ready IPv6: ADDRCONF(NETDEV_CHANGE): vcan0: link becomes ready net_ratelimit: 4 callbacks suppressed A link change request failed with some changes committed already. Interface caif0 may have been left with an inconsistent configuration, please check. bridge0: port 2(bridge_slave_1) entered disabled state bridge0: port 1(bridge_slave_0) entered disabled state batman_adv: batadv0: Interface deactivated: batadv_slave_0 batman_adv: batadv0: Interface deactivated: batadv_slave_1 netlink: 28 bytes leftover after parsing attributes in process `syz-executor.2'. netlink: 28 bytes leftover after parsing attributes in process `syz-executor.2'. netlink: 28 bytes leftover after parsing attributes in process `syz-executor.2'. ceph: device name is missing path (no : separator in .) kauditd_printk_skb: 5 callbacks suppressed audit: type=1800 audit(1677162981.481:42): pid=11037 uid=0 auid=4294967295 ses=4294967295 op="collect_data" cause="failed(directio)" comm="syz-executor.5" name=".log" dev="sda1" ino=14040 res=0 unregister_netdevice: waiting for ip6gre0 to become free. Usage count = -1 dccp_close: ABORT with 3 bytes unread audit: type=1800 audit(1677162981.751:43): pid=11062 uid=0 auid=4294967295 ses=4294967295 op="collect_data" cause="failed(directio)" comm="syz-executor.5" name=".log" dev="sda1" ino=14074 res=0 audit: type=1800 audit(1677162981.981:44): pid=11075 uid=0 auid=4294967295 ses=4294967295 op="collect_data" cause="failed(directio)" comm="syz-executor.5" name=".log" dev="sda1" ino=14064 res=0 audit: type=1800 audit(1677162982.241:45): pid=11096 uid=0 auid=4294967295 ses=4294967295 op="collect_data" cause="failed(directio)" comm="syz-executor.5" name=".log" dev="sda1" ino=14064 res=0 audit: type=1800 audit(1677162982.901:46): pid=11132 uid=0 auid=4294967295 ses=4294967295 op="collect_data" cause="failed(directio)" comm="syz-executor.0" name=".log" dev="sda1" ino=14082 res=0 audit: type=1800 audit(1677162983.151:47): pid=11151 uid=0 auid=4294967295 ses=4294967295 op="collect_data" cause="failed(directio)" comm="syz-executor.0" name=".log" dev="sda1" ino=14056 res=0 audit: type=1800 audit(1677162983.231:48): pid=11157 uid=0 auid=4294967295 ses=4294967295 op="collect_data" cause="failed(directio)" comm="syz-executor.1" name=".log" dev="sda1" ino=14085 res=0 audit: type=1800 audit(1677162983.451:49): pid=11174 uid=0 auid=4294967295 ses=4294967295 op="collect_data" cause="failed(directio)" comm="syz-executor.0" name=".log" dev="sda1" ino=14042 res=0 audit: type=1800 audit(1677162983.611:50): pid=11186 uid=0 auid=4294967295 ses=4294967295 op="collect_data" cause="failed(directio)" comm="syz-executor.1" name=".log" dev="sda1" ino=14085 res=0 audit: type=1800 audit(1677162983.741:51): pid=11196 uid=0 auid=4294967295 ses=4294967295 op="collect_data" cause="failed(directio)" comm="syz-executor.0" name=".log" dev="sda1" ino=13885 res=0 overlayfs: unrecognized mount option "index=ogf" or missing value F2FS-fs (loop1): Mismatch start address, segment0(512) cp_blkaddr(605) F2FS-fs (loop1): Can't find valid F2FS filesystem in 1th superblock F2FS-fs (loop1): invalid crc value F2FS-fs (loop1): Found nat_bits in checkpoint F2FS-fs (loop1): Mounted with checkpoint version = 753bd00b F2FS-fs (loop5): Mismatch start address, segment0(512) cp_blkaddr(605) F2FS-fs (loop5): Can't find valid F2FS filesystem in 1th superblock F2FS-fs (loop5): invalid crc value F2FS-fs (loop5): Found nat_bits in checkpoint F2FS-fs (loop5): Mounted with checkpoint version = 753bd00b overlayfs: unrecognized mount option "index=ogf" or missing value overlayfs: unrecognized mount option "index=ogf" or missing value attempt to access beyond end of device loop5: rw=2049, want=63368, limit=63271 attempt to access beyond end of device loop1: rw=2049, want=63368, limit=63271 kauditd_printk_skb: 6 callbacks suppressed audit: type=1800 audit(1677162987.371:58): pid=11358 uid=0 auid=4294967295 ses=4294967295 op="collect_data" cause="failed(directio)" comm="syz-executor.5" name="file0" dev="loop5" ino=4 res=0 audit: type=1800 audit(1677162988.031:59): pid=11367 uid=0 auid=4294967295 ses=4294967295 op="collect_data" cause="failed(directio)" comm="syz-executor.1" name="file0" dev="loop1" ino=4 res=0 audit: type=1800 audit(1677162988.901:60): pid=11399 uid=0 auid=4294967295 ses=4294967295 op="collect_data" cause="failed(directio)" comm="syz-executor.5" name="file0" dev="loop5" ino=4 res=0 audit: type=1800 audit(1677162989.311:61): pid=11409 uid=0 auid=4294967295 ses=4294967295 op="collect_data" cause="failed(directio)" comm="syz-executor.1" name="file0" dev="loop1" ino=4 res=0 overlayfs: unrecognized mount option "index=ogf" or missing value overlayfs: unrecognized mount option "index=ogf" or missing value overlayfs: unrecognized mount option "index=ogf" or missing value NILFS (loop1): broken superblock, retrying with spare superblock (blocksize = 1024) hfs: request for non-existent node 1280 in B*Tree NILFS (loop1): broken superblock, retrying with spare superblock (blocksize = 4096) hfs: request for non-existent node 1280 in B*Tree NILFS (loop1): mounting unchecked fs