============================= 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 1 lock held by syz-executor.4/9514: #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: 0 PID: 9514 Comm: syz-executor.4 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 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: 0033:0x7f15a8d5a0f9 RSP: 002b:00007f15a72cc168 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007f15a8e79f80 RCX: 00007f15a8d5a0f9 RDX: 0000000000000000 RSI: 0000000020002980 RDI: 0000000000000003 RBP: 00007f15a8db5ae9 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffeaf3c14ef R14: 00007f15a72cc300 R15: 0000000000022000 IPVS: ftp: loaded support on port[0] = 21 Bluetooth: Unknown LE signaling command 0x19 Bluetooth: Wrong link type (-22) TCP: request_sock_TCPv6: Possible SYN flooding on port 20002. Sending cookies. Check SNMP counters. netlink: 1068 bytes leftover after parsing attributes in process `syz-executor.5'. syz-executor.1 (9860) used greatest stack depth: 24088 bytes left TCP: request_sock_TCPv6: Possible SYN flooding on port 20002. Sending cookies. Check SNMP counters. netlink: 8 bytes leftover after parsing attributes in process `syz-executor.3'. audit: type=1326 audit(1677526536.428:2): auid=4294967295 uid=0 gid=0 ses=4294967295 pid=9901 comm="syz-executor.4" exe="/root/syz-executor.4" sig=31 arch=c000003e syscall=202 compat=0 ip=0x7f15a8d5a0f9 code=0x0 PF_BRIDGE: RTM_NEWNEIGH with invalid ifindex TCP: request_sock_TCPv6: Possible SYN flooding on port 20002. Sending cookies. Check SNMP counters. TCP: request_sock_TCPv6: Possible SYN flooding on port 20002. Sending cookies. Check SNMP counters. netlink: 8 bytes leftover after parsing attributes in process `syz-executor.5'. audit: type=1804 audit(1677526537.258:3): pid=10047 uid=0 auid=4294967295 ses=4294967295 op="invalid_pcr" cause="open_writers" comm="syz-executor.2" name="/root/syzkaller-testdir557219622/syzkaller.ahejtv/27/file0" dev="sda1" ino=13958 res=1 audit: type=1804 audit(1677526537.868:4): pid=10061 uid=0 auid=4294967295 ses=4294967295 op="invalid_pcr" cause="open_writers" comm="syz-executor.2" name="/root/syzkaller-testdir557219622/syzkaller.ahejtv/28/file0" dev="sda1" ino=13977 res=1 audit: type=1804 audit(1677526537.888:5): pid=10065 uid=0 auid=4294967295 ses=4294967295 op="invalid_pcr" cause="open_writers" comm="syz-executor.3" name="/root/syzkaller-testdir2233395763/syzkaller.lidmIA/21/file0" dev="sda1" ino=13991 res=1 9pnet: Could not find request transport: ½ could not allocate digest TFM handle blake2s-160 EXT4-fs (loop4): Ignoring removed nobh option EXT4-fs (loop4): Unsupported blocksize for fs encryption netlink: 80 bytes leftover after parsing attributes in process `syz-executor.3'. gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" gfs2: fsid=syz:syz: Now mounting FS... gfs2: fsid=syz:syz.0: fatal: filesystem consistency error inode = 2147483648 19 function = gfs2_jdesc_check, file = fs/gfs2/super.c, line = 368 gfs2: fsid=syz:syz.0: about to withdraw this file system gfs2: fsid=syz:syz.0: withdrawn CPU: 0 PID: 10130 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 gfs2_lm_withdraw.cold+0x1d8/0x251 fs/gfs2/util.c:73 gfs2_consist_inode_i+0xca/0x110 fs/gfs2/util.c:161 gfs2_jdesc_check+0x1f6/0x220 fs/gfs2/super.c:368 init_journal fs/gfs2/ops_fstype.c:732 [inline] init_inodes+0x110b/0x18d0 fs/gfs2/ops_fstype.c:807 fill_super+0x1721/0x2310 fs/gfs2/ops_fstype.c:1177 gfs2_mount+0x439/0x510 fs/gfs2/ops_fstype.c:1340 mount_fs+0x92/0x2a0 fs/super.c:1237 vfs_kern_mount.part.0+0x5b/0x470 fs/namespace.c:1046 vfs_kern_mount fs/namespace.c:1036 [inline] do_new_mount fs/namespace.c:2572 [inline] do_mount+0xe65/0x2a30 fs/namespace.c:2905 SYSC_mount fs/namespace.c:3121 [inline] SyS_mount+0xa8/0x120 fs/namespace.c:3098 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x5e/0xd3 RIP: 0033:0x7f87c73a562a RSP: 002b:00007f87c5915f88 EFLAGS: 00000202 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 0000000000012547 RCX: 00007f87c73a562a RDX: 0000000020000040 RSI: 0000000020012500 RDI: 00007f87c5915fe0 RBP: 00007f87c5916020 R08: 00007f87c5916020 R09: 000000000020400f R10: 000000000020400f R11: 0000000000000202 R12: 0000000020000040 R13: 0000000020012500 R14: 00007f87c5915fe0 R15: 0000000020000080 gfs2: fsid=syz:syz.0: my journal (0) is bad: -5 gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" gfs2: fsid=syz:syz: Now mounting FS... gfs2: fsid=syz:syz.0: fatal: filesystem consistency error inode = 2147483648 19 function = gfs2_jdesc_check, file = fs/gfs2/super.c, line = 368 gfs2: fsid=syz:syz.0: about to withdraw this file system gfs2: fsid=syz:syz.0: withdrawn CPU: 1 PID: 10188 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 gfs2_lm_withdraw.cold+0x1d8/0x251 fs/gfs2/util.c:73 gfs2_consist_inode_i+0xca/0x110 fs/gfs2/util.c:161 gfs2_jdesc_check+0x1f6/0x220 fs/gfs2/super.c:368 init_journal fs/gfs2/ops_fstype.c:732 [inline] init_inodes+0x110b/0x18d0 fs/gfs2/ops_fstype.c:807 fill_super+0x1721/0x2310 fs/gfs2/ops_fstype.c:1177 gfs2_mount+0x439/0x510 fs/gfs2/ops_fstype.c:1340 mount_fs+0x92/0x2a0 fs/super.c:1237 vfs_kern_mount.part.0+0x5b/0x470 fs/namespace.c:1046 vfs_kern_mount fs/namespace.c:1036 [inline] do_new_mount fs/namespace.c:2572 [inline] do_mount+0xe65/0x2a30 fs/namespace.c:2905 SYSC_mount fs/namespace.c:3121 [inline] SyS_mount+0xa8/0x120 fs/namespace.c:3098 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x5e/0xd3 RIP: 0033:0x7f87c73a562a RSP: 002b:00007f87c5915f88 EFLAGS: 00000202 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 0000000000012547 RCX: 00007f87c73a562a RDX: 0000000020000040 RSI: 0000000020012500 RDI: 00007f87c5915fe0 RBP: 00007f87c5916020 R08: 00007f87c5916020 R09: 000000000020400f R10: 000000000020400f R11: 0000000000000202 R12: 0000000020000040 R13: 0000000020012500 R14: 00007f87c5915fe0 R15: 0000000020000080 gfs2: fsid=syz:syz.0: my journal (0) is bad: -5 Bluetooth: hci5 command 0x041b tx timeout gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" gfs2: fsid=syz:syz: Now mounting FS... gfs2: fsid=syz:syz.0: fatal: filesystem consistency error inode = 2147483648 19 function = gfs2_jdesc_check, file = fs/gfs2/super.c, line = 368 gfs2: fsid=syz:syz.0: about to withdraw this file system gfs2: fsid=syz:syz.0: withdrawn CPU: 0 PID: 10240 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 gfs2_lm_withdraw.cold+0x1d8/0x251 fs/gfs2/util.c:73 gfs2_consist_inode_i+0xca/0x110 fs/gfs2/util.c:161 gfs2_jdesc_check+0x1f6/0x220 fs/gfs2/super.c:368 init_journal fs/gfs2/ops_fstype.c:732 [inline] init_inodes+0x110b/0x18d0 fs/gfs2/ops_fstype.c:807 fill_super+0x1721/0x2310 fs/gfs2/ops_fstype.c:1177 gfs2_mount+0x439/0x510 fs/gfs2/ops_fstype.c:1340 mount_fs+0x92/0x2a0 fs/super.c:1237 vfs_kern_mount.part.0+0x5b/0x470 fs/namespace.c:1046 vfs_kern_mount fs/namespace.c:1036 [inline] do_new_mount fs/namespace.c:2572 [inline] do_mount+0xe65/0x2a30 fs/namespace.c:2905 SYSC_mount fs/namespace.c:3121 [inline] SyS_mount+0xa8/0x120 fs/namespace.c:3098 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x5e/0xd3 RIP: 0033:0x7f87c73a562a RSP: 002b:00007f87c5915f88 EFLAGS: 00000202 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 0000000000012547 RCX: 00007f87c73a562a RDX: 0000000020000040 RSI: 0000000020012500 RDI: 00007f87c5915fe0 RBP: 00007f87c5916020 R08: 00007f87c5916020 R09: 000000000020400f R10: 000000000020400f R11: 0000000000000202 R12: 0000000020000040 R13: 0000000020012500 R14: 00007f87c5915fe0 R15: 0000000020000080 gfs2: fsid=syz:syz.0: my journal (0) is bad: -5