============================= 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.4/11446: #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: 11446 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 REISERFS (device loop3): found reiserfs format "3.6" with non-standard journal netlink_rcv_skb+0x125/0x390 net/netlink/af_netlink.c:2461 REISERFS (device loop3): using ordered data mode netlink_unicast_kernel net/netlink/af_netlink.c:1302 [inline] netlink_unicast+0x437/0x610 net/netlink/af_netlink.c:1328 reiserfs: using flush barriers netlink_sendmsg+0x651/0xbc0 net/netlink/af_netlink.c:1900 REISERFS (device loop3): journal params: device loop3, size 512, journal first block 18, max trans len 256, max batch 225, max commit age 30, max trans age 30 sock_sendmsg_nosec net/socket.c:646 [inline] sock_sendmsg+0xb5/0x100 net/socket.c:656 ___sys_sendmsg+0x6c8/0x800 net/socket.c:2062 REISERFS (device loop3): checking transaction log (loop3) __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: 0033:0x7f4e35dff0f9 RSP: 002b:00007f4e34371168 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007f4e35f1ef80 RCX: 00007f4e35dff0f9 RDX: 0000000000000000 RSI: 0000000020000140 RDI: 0000000000000003 RBP: 00007f4e35e5aae9 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffefa70722f R14: 00007f4e34371300 R15: 0000000000022000 REISERFS (device loop3): Using rupasov hash to sort names REISERFS (device loop3): Created .reiserfs_priv - reserved for xattr storage. REISERFS (device loop3): found reiserfs format "3.6" with non-standard journal REISERFS (device loop3): using ordered data mode reiserfs: using flush barriers REISERFS (device loop3): journal params: device loop3, size 512, journal first block 18, max trans len 256, max batch 225, max commit age 30, max trans age 30 REISERFS (device loop3): checking transaction log (loop3) REISERFS (device loop3): Using rupasov hash to sort names REISERFS (device loop3): Created .reiserfs_priv - reserved for xattr storage. REISERFS (device loop3): found reiserfs format "3.6" with non-standard journal REISERFS (device loop3): using ordered data mode reiserfs: using flush barriers REISERFS (device loop3): journal params: device loop3, size 512, journal first block 18, max trans len 256, max batch 225, max commit age 30, max trans age 30 REISERFS (device loop3): checking transaction log (loop3) REISERFS (device loop3): Using rupasov hash to sort names REISERFS (device loop3): Created .reiserfs_priv - reserved for xattr storage. sg_write: data in/out 1818846731/1 bytes for SCSI command 0xc8-- guessing data in; program syz-executor.0 not setting count and/or reply_len properly REISERFS (device loop3): found reiserfs format "3.6" with non-standard journal REISERFS (device loop3): using ordered data mode reiserfs: using flush barriers REISERFS (device loop3): journal params: device loop3, size 512, journal first block 18, max trans len 256, max batch 225, max commit age 30, max trans age 30 REISERFS (device loop3): checking transaction log (loop3) REISERFS (device loop3): Using rupasov hash to sort names REISERFS (device loop3): Created .reiserfs_priv - reserved for xattr storage. sg_write: data in/out 1818846731/41 bytes for SCSI command 0x80-- guessing data in; program syz-executor.1 not setting count and/or reply_len properly REISERFS (device loop3): found reiserfs format "3.6" with non-standard journal REISERFS (device loop3): using ordered data mode reiserfs: using flush barriers REISERFS (device loop3): journal params: device loop3, size 512, journal first block 18, max trans len 256, max batch 225, max commit age 30, max trans age 30 REISERFS (device loop3): checking transaction log (loop3) REISERFS (device loop3): Using rupasov hash to sort names REISERFS (device loop3): Created .reiserfs_priv - reserved for xattr storage. ptrace attach of "/root/syz-executor.2 exec"[11695] was attempted by "/root/syz-executor.2 exec"[11692] ptrace attach of "/root/syz-executor.2 exec"[11714] was attempted by "/root/syz-executor.2 exec"[11709] ptrace attach of "/root/syz-executor.2 exec"[11749] was attempted by "/root/syz-executor.2 exec"[11743] ptrace attach of "/root/syz-executor.2 exec"[11767] was attempted by "/root/syz-executor.2 exec"[11763] netlink: 320 bytes leftover after parsing attributes in process `syz-executor.1'. REISERFS (device loop2): found reiserfs format "3.5" with non-standard journal REISERFS (device loop2): using ordered data mode reiserfs: using flush barriers REISERFS (device loop2): journal params: device loop2, size 512, journal first block 18, max trans len 256, max batch 225, max commit age 30, max trans age 30 REISERFS (device loop2): checking transaction log (loop2) REISERFS (device loop2): Using r5 hash to sort names REISERFS (device loop2): using 3.5.x disk format REISERFS (device loop2): Created .reiserfs_priv - reserved for xattr storage. ====================================================== WARNING: the mand mount option is being deprecated and will be removed in v5.15! ====================================================== audit: type=1804 audit(1677479643.236:6): pid=11905 uid=0 auid=4294967295 ses=4294967295 op="invalid_pcr" cause="open_writers" comm="syz-executor.3" name="/root/syzkaller-testdir760483046/syzkaller.m7Xx0o/100/bus/bus" dev="loop3" ino=25 res=1 REISERFS (device loop5): found reiserfs format "3.6" with non-standard journal REISERFS (device loop5): using ordered data mode reiserfs: using flush barriers REISERFS (device loop5): journal params: device loop5, size 512, journal first block 18, max trans len 256, max batch 225, max commit age 30, max trans age 30 REISERFS (device loop5): checking transaction log (loop5) REISERFS (device loop5): Using rupasov hash to sort names REISERFS (device loop5): Created .reiserfs_priv - reserved for xattr storage. netlink: 12 bytes leftover after parsing attributes in process `syz-executor.0'. netlink: 12 bytes leftover after parsing attributes in process `syz-executor.0'. netlink: 4 bytes leftover after parsing attributes in process `syz-executor.3'. REISERFS (device loop5): found reiserfs format "3.6" with non-standard journal REISERFS (device loop5): using ordered data mode reiserfs: using flush barriers REISERFS (device loop5): journal params: device loop5, size 512, journal first block 18, max trans len 256, max batch 225, max commit age 30, max trans age 30 REISERFS (device loop5): checking transaction log (loop5) REISERFS (device loop5): Using rupasov hash to sort names REISERFS (device loop5): Created .reiserfs_priv - reserved for xattr storage. netlink: 12 bytes leftover after parsing attributes in process `syz-executor.0'. REISERFS (device loop5): found reiserfs format "3.6" with non-standard journal REISERFS (device loop5): using ordered data mode reiserfs: using flush barriers REISERFS (device loop5): journal params: device loop5, size 512, journal first block 18, max trans len 256, max batch 225, max commit age 30, max trans age 30 EXT4-fs (loop2): barriers disabled JBD2: no valid journal superblock found EXT4-fs (loop2): error loading journal REISERFS (device loop5): checking transaction log (loop5) REISERFS (device loop5): Using rupasov hash to sort names REISERFS (device loop5): Created .reiserfs_priv - reserved for xattr storage. netlink: 12 bytes leftover after parsing attributes in process `syz-executor.0'. REISERFS (device loop5): found reiserfs format "3.6" with non-standard journal REISERFS (device loop5): using ordered data mode reiserfs: using flush barriers REISERFS (device loop5): journal params: device loop5, size 512, journal first block 18, max trans len 256, max batch 225, max commit age 30, max trans age 30 REISERFS (device loop5): checking transaction log (loop5) REISERFS (device loop5): Using rupasov hash to sort names REISERFS (device loop5): Created .reiserfs_priv - reserved for xattr storage. IPVS: ftp: loaded support on port[0] = 21 NILFS (loop4): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds ptrace attach of "/root/syz-executor.2 exec"[12198] was attempted by "/root/syz-executor.2 exec"[12186] netlink: 4 bytes leftover after parsing attributes in process `syz-executor.0'.