============================= audit: type=1800 audit(1677540796.917:61): pid=10838 uid=0 auid=4294967295 ses=4294967295 op="collect_data" cause="failed(directio)" comm="syz-executor.2" name="file0" dev="sda1" ino=14290 res=0 WARNING: suspicious RCU usage 4.14.307-syzkaller #0 Not tainted ----------------------------- net/sched/act_sample.c:95 suspicious rcu_dereference_protected() usage! other info that might help us debug this: rcu_scheduler_active = 2, debug_locks = 1 audit: type=1804 audit(1677540796.927:62): pid=10838 uid=0 auid=4294967295 ses=4294967295 op="invalid_pcr" cause="open_writers" comm="syz-executor.2" name="/root/syzkaller-testdir2258221254/syzkaller.bU2O0u/41/file0" dev="sda1" ino=14290 res=1 1 lock held by syz-executor.5/10832: #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: audit: type=1804 audit(1677540796.937:63): pid=10838 uid=0 auid=4294967295 ses=4294967295 op="invalid_pcr" cause="ToMToU" comm="syz-executor.2" name="/root/syzkaller-testdir2258221254/syzkaller.bU2O0u/41/file0" dev="sda1" ino=14290 res=1 CPU: 0 PID: 10832 Comm: syz-executor.5 Not tainted 4.14.307-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/16/2023 Call Trace: audit: type=1800 audit(1677540797.557:64): pid=10849 uid=0 auid=4294967295 ses=4294967295 op="collect_data" cause="failed(directio)" comm="syz-executor.3" name="file0" dev="sda1" ino=14166 res=0 __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 audit: type=1804 audit(1677540797.567:65): pid=10849 uid=0 auid=4294967295 ses=4294967295 op="invalid_pcr" cause="open_writers" comm="syz-executor.3" name="/root/syzkaller-testdir252825366/syzkaller.TYqI6P/47/file0" dev="sda1" ino=14166 res=1 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 syz-executor.3 (10849) used greatest stack depth: 24768 bytes left __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: 0033:0x7f95e92c20f9 RSP: 002b:00007f95e7834168 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007f95e93e1f80 RCX: 00007f95e92c20f9 RDX: 0000000000000000 RSI: 0000000020002980 RDI: 0000000000000003 RBP: 00007f95e931dae9 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fff81e46c7f R14: 00007f95e7834300 R15: 0000000000022000 IPv6: ADDRCONF(NETDEV_CHANGE): vcan0: link becomes ready IPv6: ADDRCONF(NETDEV_CHANGE): vcan0: link becomes ready A link change request failed with some changes committed already. Interface caif0 may have been left with an inconsistent configuration, please check. audit: type=1800 audit(1677540798.567:66): pid=10867 uid=0 auid=4294967295 ses=4294967295 op="collect_data" cause="failed(directio)" comm="syz-executor.2" name="file0" dev="sda1" ino=14347 res=0 audit: type=1804 audit(1677540798.597:67): pid=10867 uid=0 auid=4294967295 ses=4294967295 op="invalid_pcr" cause="open_writers" comm="syz-executor.2" name="/root/syzkaller-testdir2258221254/syzkaller.bU2O0u/42/file0" dev="sda1" ino=14347 res=1 kauditd_printk_skb: 1 callbacks suppressed audit: type=1800 audit(1677540799.057:69): pid=10865 uid=0 auid=4294967295 ses=4294967295 op="collect_data" cause="failed(directio)" comm="syz-executor.3" name="file0" dev="sda1" ino=14012 res=0 IPv6: ADDRCONF(NETDEV_CHANGE): vcan0: link becomes ready A link change request failed with some changes committed already. Interface caif0 may have been left with an inconsistent configuration, please check. nla_parse: 2 callbacks suppressed netlink: 4 bytes leftover after parsing attributes in process `syz-executor.5'. audit: type=1804 audit(1677540799.057:70): pid=10865 uid=0 auid=4294967295 ses=4294967295 op="invalid_pcr" cause="open_writers" comm="syz-executor.3" name="/root/syzkaller-testdir252825366/syzkaller.TYqI6P/48/file0" dev="sda1" ino=14012 res=1 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 audit: type=1800 audit(1677540801.467:71): pid=10893 uid=0 auid=4294967295 ses=4294967295 op="collect_data" cause="failed(directio)" comm="syz-executor.3" name="file0" dev="sda1" ino=14359 res=0 audit: type=1804 audit(1677540801.487:72): pid=10893 uid=0 auid=4294967295 ses=4294967295 op="invalid_pcr" cause="open_writers" comm="syz-executor.3" name="/root/syzkaller-testdir252825366/syzkaller.TYqI6P/49/file0" dev="sda1" ino=14359 res=1 audit: type=1800 audit(1677540801.567:73): pid=10896 uid=0 auid=4294967295 ses=4294967295 op="collect_data" cause="failed(directio)" comm="syz-executor.0" name="file0" dev="sda1" ino=14362 res=0 syz-executor.5 (10884) used greatest stack depth: 23936 bytes left IPv6: ADDRCONF(NETDEV_CHANGE): vcan0: link becomes ready audit: type=1800 audit(1677540802.327:74): pid=10904 uid=0 auid=4294967295 ses=4294967295 op="collect_data" cause="failed(directio)" comm="syz-executor.2" name="file0" dev="sda1" ino=14363 res=0 A link change request failed with some changes committed already. Interface caif0 may have been left with an inconsistent configuration, please check. IPv6: ADDRCONF(NETDEV_UP): bridge0: link is not ready IPv6: ADDRCONF(NETDEV_CHANGE): vcan0: link becomes ready IPv6: ADDRCONF(NETDEV_CHANGE): vcan0: link becomes ready 8021q: adding VLAN 0 to HW filter on device bond0 IPv6: ADDRCONF(NETDEV_UP): team0: link is not ready 8021q: adding VLAN 0 to HW filter on device team0 A link change request failed with some changes committed already. Interface caif0 may have been left with an inconsistent configuration, please check. audit: type=1804 audit(1677540802.337:75): pid=10904 uid=0 auid=4294967295 ses=4294967295 op="invalid_pcr" cause="open_writers" comm="syz-executor.2" name="/root/syzkaller-testdir2258221254/syzkaller.bU2O0u/43/file0" dev="sda1" ino=14363 res=1 audit: type=1804 audit(1677540802.337:76): pid=10904 uid=0 auid=4294967295 ses=4294967295 op="invalid_pcr" cause="ToMToU" comm="syz-executor.2" name="/root/syzkaller-testdir2258221254/syzkaller.bU2O0u/43/file0" dev="sda1" ino=14363 res=1 audit: type=1804 audit(1677540802.717:77): pid=10896 uid=0 auid=4294967295 ses=4294967295 op="invalid_pcr" cause="open_writers" comm="syz-executor.0" name="/root/syzkaller-testdir3485596388/syzkaller.NYj7KU/51/file0" dev="sda1" ino=14362 res=1 IPv6: ADDRCONF(NETDEV_CHANGE): vcan0: link becomes ready A link change request failed with some changes committed already. Interface caif0 may have been left with an inconsistent configuration, please check. audit: type=1800 audit(1677540802.797:78): pid=10898 uid=0 auid=4294967295 ses=4294967295 op="collect_data" cause="failed(directio)" comm="syz-executor.1" name="file0" dev="sda1" ino=14113 res=0 audit: type=1800 audit(1677540803.007:79): pid=10917 uid=0 auid=4294967295 ses=4294967295 op="collect_data" cause="failed(directio)" comm="syz-executor.2" name="file0" dev="sda1" ino=14364 res=0 audit: type=1804 audit(1677540803.067:80): pid=10917 uid=0 auid=4294967295 ses=4294967295 op="invalid_pcr" cause="open_writers" comm="syz-executor.2" name="/root/syzkaller-testdir2258221254/syzkaller.bU2O0u/44/file0" dev="sda1" ino=14364 res=1