netlink: 'syz-executor.1': attribute type 4 has an invalid length. netlink: 'syz-executor.1': attribute type 1 has an invalid length. netlink: 'syz-executor.1': attribute type 1 has an invalid length. netlink: 'syz-executor.1': attribute type 4 has an invalid length. ============================= WARNING: suspicious RCU usage 4.19.84 #0 Not tainted ----------------------------- include/linux/radix-tree.h:241 suspicious rcu_dereference_check() usage! other info that might help us debug this: rcu_scheduler_active = 2, debug_locks = 1 2 locks held by syz-executor.5/12311: #0: 000000007ef5c71e (&sb->s_type->i_mutex_key#12){+.+.}, at: inode_lock include/linux/fs.h:747 [inline] #0: 000000007ef5c71e (&sb->s_type->i_mutex_key#12){+.+.}, at: memfd_add_seals mm/memfd.c:199 [inline] #0: 000000007ef5c71e (&sb->s_type->i_mutex_key#12){+.+.}, at: memfd_fcntl+0x235/0x1750 mm/memfd.c:249 #1: 00000000dc1ab7db (&(&(&mapping->i_pages)->xa_lock)->rlock){-.-.}, at: spin_lock_irq include/linux/spinlock.h:354 [inline] #1: 00000000dc1ab7db (&(&(&mapping->i_pages)->xa_lock)->rlock){-.-.}, at: memfd_tag_pins mm/memfd.c:42 [inline] #1: 00000000dc1ab7db (&(&(&mapping->i_pages)->xa_lock)->rlock){-.-.}, at: memfd_wait_for_pins mm/memfd.c:83 [inline] #1: 00000000dc1ab7db (&(&(&mapping->i_pages)->xa_lock)->rlock){-.-.}, at: memfd_add_seals mm/memfd.c:217 [inline] #1: 00000000dc1ab7db (&(&(&mapping->i_pages)->xa_lock)->rlock){-.-.}, at: memfd_fcntl+0x4bc/0x1750 mm/memfd.c:249 stack backtrace: CPU: 0 PID: 12311 Comm: syz-executor.5 Not tainted 4.19.84 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x197/0x210 lib/dump_stack.c:118 lockdep_rcu_suspicious+0x153/0x15d kernel/locking/lockdep.c:4539 radix_tree_deref_slot include/linux/radix-tree.h:241 [inline] radix_tree_deref_slot include/linux/radix-tree.h:239 [inline] memfd_tag_pins mm/memfd.c:44 [inline] memfd_wait_for_pins mm/memfd.c:83 [inline] memfd_add_seals mm/memfd.c:217 [inline] memfd_fcntl+0xfdf/0x1750 mm/memfd.c:249 do_fcntl+0x200/0x1020 fs/fcntl.c:421 __do_sys_fcntl fs/fcntl.c:463 [inline] __se_sys_fcntl fs/fcntl.c:448 [inline] __x64_sys_fcntl+0x16d/0x1e0 fs/fcntl.c:448 do_syscall_64+0xfd/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x45a639 Code: ad b6 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 7b b6 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007f3b7816ac78 EFLAGS: 00000246 ORIG_RAX: 0000000000000048 RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 000000000045a639 RDX: 0000000000000008 RSI: 0000000000000409 RDI: 0000000000000005 RBP: 000000000075c070 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f3b7816b6d4 R13: 00000000004c1068 R14: 00000000004d3c60 R15: 00000000ffffffff binder: 12323:12325 ioctl c018620c 20000040 returned -22 audit: type=1400 audit(1574234051.034:82): avc: denied { set_context_mgr } for pid=12323 comm="syz-executor.0" scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tclass=binder permissive=1 binder: 12323:12326 ioctl c018620c 20000040 returned -22 netlink: 20 bytes leftover after parsing attributes in process `syz-executor.5'. netlink: 20 bytes leftover after parsing attributes in process `syz-executor.5'. IPVS: ftp: loaded support on port[0] = 21 TCP: request_sock_TCPv6: Possible SYN flooding on port 20002. Sending cookies. Check SNMP counters. IPVS: ftp: loaded support on port[0] = 21 attempt to access beyond end of device loop0: rw=1, want=78, limit=64 Buffer I/O error on dev loop0, logical block 77, lost async page write attempt to access beyond end of device loop0: rw=2049, want=130, limit=64 attempt to access beyond end of device loop0: rw=1, want=79, limit=64 Buffer I/O error on dev loop0, logical block 129, lost async page write Buffer I/O error on dev loop0, logical block 78, lost async page write attempt to access beyond end of device loop0: rw=2049, want=131, limit=64 Buffer I/O error on dev loop0, logical block 130, lost async page write attempt to access beyond end of device loop0: rw=1, want=80, limit=64 Buffer I/O error on dev loop0, logical block 79, lost async page write attempt to access beyond end of device attempt to access beyond end of device loop0: rw=2049, want=132, limit=64 Buffer I/O error on dev loop0, logical block 131, lost async page write loop0: rw=1, want=81, limit=64 Buffer I/O error on dev loop0, logical block 80, lost async page write attempt to access beyond end of device loop0: rw=2049, want=133, limit=64 Buffer I/O error on dev loop0, logical block 132, lost async page write attempt to access beyond end of device loop0: rw=2049, want=142, limit=64 Buffer I/O error on dev loop0, logical block 141, lost async page write attempt to access beyond end of device loop0: rw=2049, want=143, limit=64 Buffer I/O error on dev loop0, logical block 142, lost async page write attempt to access beyond end of device loop0: rw=2049, want=144, limit=64 attempt to access beyond end of device loop0: rw=2049, want=145, limit=64 attempt to access beyond end of device loop0: rw=1, want=209, limit=64 attempt to access beyond end of device loop0: rw=2049, want=649, limit=64 sd 0:0:1:0: [sg0] tag#2640 FAILED Result: hostbyte=DID_ABORT driverbyte=DRIVER_OK sd 0:0:1:0: [sg0] tag#2640 CDB: Send volume tag, set streaming sd 0:0:1:0: [sg0] tag#2640 CDB[00]: b6 dc c5 1e bc e7 f5 fe a9 b3 20 c2 d9 e2 48 92 sd 0:0:1:0: [sg0] tag#2640 CDB[10]: e1 20 6b 1e 04 39 d8 71 21 4a 8e 94 98 3d 23 81 sd 0:0:1:0: [sg0] tag#2640 CDB[20]: 97 netlink: 16 bytes leftover after parsing attributes in process `syz-executor.0'. block nbd3: Attempted send on invalid socket print_req_error: I/O error, dev nbd3, sector 0 XFS (nbd3): SB validate failed with error -5. validate_nla: 2 callbacks suppressed netlink: 'syz-executor.5': attribute type 1 has an invalid length. netlink: 'syz-executor.5': attribute type 1 has an invalid length. kvm: pic: non byte read kvm: pic: non byte read kvm: pic: non byte read kvm: pic: non byte read kvm: pic: non byte read audit: type=1800 audit(1574234057.374:83): pid=12684 uid=0 auid=4294967295 ses=4294967295 subj=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 op=collect_data cause=failed comm="syz-executor.3" name="bus" dev="sda1" ino=16585 res=0 kvm: pic: non byte read kvm: pic: non byte read kvm: pic: non byte read audit: type=1800 audit(1574234057.414:84): pid=12688 uid=0 auid=4294967295 ses=4294967295 subj=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 op=collect_data cause=failed comm="syz-executor.3" name="bus" dev="sda1" ino=16585 res=0 kvm: pic: non byte read kvm: pic: non byte read audit: type=1400 audit(1574234057.874:85): avc: denied { sys_admin } for pid=12708 comm="syz-executor.5" capability=21 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tclass=cap_userns permissive=1 IPVS: ftp: loaded support on port[0] = 21 IPVS: ftp: loaded support on port[0] = 21 SELinux: unrecognized netlink message: protocol=4 nlmsg_type=0 sclass=netlink_tcpdiag_socket pig=12769 comm=syz-executor.3 SELinux: unrecognized netlink message: protocol=4 nlmsg_type=0 sclass=netlink_tcpdiag_socket pig=12769 comm=syz-executor.3 SELinux: unrecognized netlink message: protocol=4 nlmsg_type=0 sclass=netlink_tcpdiag_socket pig=12769 comm=syz-executor.3 protocol 88fb is buggy, dev hsr_slave_0 protocol 88fb is buggy, dev hsr_slave_1 gfs2: invalid mount option: MŮ gfs2: can't parse mount arguments SELinux: unrecognized netlink message: protocol=4 nlmsg_type=0 sclass=netlink_tcpdiag_socket pig=12769 comm=syz-executor.3 SELinux: unrecognized netlink message: protocol=4 nlmsg_type=0 sclass=netlink_tcpdiag_socket pig=12769 comm=syz-executor.3 gfs2: invalid mount option: MŮ gfs2: can't parse mount arguments IPv6: NLM_F_CREATE should be specified when creating new route IPv6: RTM_NEWROUTE with no NLM_F_CREATE or NLM_F_REPLACE IPv6: NLM_F_CREATE should be set when creating new route IPv6: NLM_F_CREATE should be set when creating new route IPv6: NLM_F_CREATE should be set when creating new route protocol 88fb is buggy, dev hsr_slave_0 protocol 88fb is buggy, dev hsr_slave_0 protocol 88fb is buggy, dev hsr_slave_1 protocol 88fb is buggy, dev hsr_slave_1 bridge0: port 3(gretap0) entered blocking state bridge0: port 3(gretap0) entered disabled state device gretap0 entered promiscuous mode 9pnet: Insufficient options for proto=fd bridge0: port 3(gretap0) entered blocking state bridge0: port 3(gretap0) entered forwarding state overlayfs: failed to resolve './file1': -2 9pnet: Insufficient options for proto=fd