can: request_module (can-proto-5) failed. can: request_module (can-proto-5) failed. ============================= WARNING: suspicious RCU usage 4.15.0+ #307 Not tainted ----------------------------- ./include/linux/rcupdate.h:302 Illegal context switch in RCU read-side critical section! other info that might help us debug this: rcu_scheduler_active = 2, debug_locks = 1 1 lock held by syz-executor2/5707: #0: (rcu_read_lock){....}, at: [<0000000049a98698>] __rds_conn_create+0xe46/0x1b50 net/rds/connection.c:218 stack backtrace: CPU: 0 PID: 5707 Comm: syz-executor2 Not tainted 4.15.0+ #307 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:17 [inline] dump_stack+0x194/0x257 lib/dump_stack.c:53 lockdep_rcu_suspicious+0x123/0x170 kernel/locking/lockdep.c:4592 rcu_preempt_sleep_check include/linux/rcupdate.h:301 [inline] ___might_sleep+0x385/0x470 kernel/sched/core.c:6093 __might_sleep+0x95/0x190 kernel/sched/core.c:6081 slab_pre_alloc_hook mm/slab.h:420 [inline] slab_alloc mm/slab.c:3365 [inline] kmem_cache_alloc_trace+0x299/0x740 mm/slab.c:3605 kmalloc include/linux/slab.h:512 [inline] kzalloc include/linux/slab.h:701 [inline] rds_loop_conn_alloc+0xc8/0x380 net/rds/loop.c:126 __rds_conn_create+0x112f/0x1b50 net/rds/connection.c:227 rds_conn_create_outgoing+0x3f/0x50 net/rds/connection.c:309 rds_sendmsg+0xda3/0x2390 net/rds/send.c:1126 sock_sendmsg_nosec net/socket.c:630 [inline] sock_sendmsg+0xca/0x110 net/socket.c:640 SYSC_sendto+0x361/0x5c0 net/socket.c:1747 SyS_sendto+0x40/0x50 net/socket.c:1715 do_syscall_64+0x282/0x940 arch/x86/entry/common.c:287 entry_SYSCALL_64_after_hwframe+0x26/0x9b RIP: 0033:0x453a59 RSP: 002b:00007f497f5b1c68 EFLAGS: 00000246 ORIG_RAX: 000000000000002c RAX: ffffffffffffffda RBX: 00007f497f5b26d4 RCX: 0000000000453a59 RDX: 0000000000000901 RSI: 00000000204c7000 RDI: 0000000000000014 RBP: 000000000071bea0 R08: 000000002055cff0 R09: 0000000000000010 R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff R13: 00000000000004b9 R14: 00000000006f71f8 R15: 0000000000000000 BUG: sleeping function called from invalid context at mm/slab.h:420 in_atomic(): 1, irqs_disabled(): 0, pid: 5707, name: syz-executor2 1 lock held by syz-executor2/5707: #0: (rcu_read_lock){....}, at: [<0000000049a98698>] __rds_conn_create+0xe46/0x1b50 net/rds/connection.c:218 CPU: 0 PID: 5707 Comm: syz-executor2 Not tainted 4.15.0+ #307 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:17 [inline] dump_stack+0x194/0x257 lib/dump_stack.c:53 ___might_sleep+0x2b2/0x470 kernel/sched/core.c:6128 __might_sleep+0x95/0x190 kernel/sched/core.c:6081 slab_pre_alloc_hook mm/slab.h:420 [inline] slab_alloc mm/slab.c:3365 [inline] kmem_cache_alloc_trace+0x299/0x740 mm/slab.c:3605 kmalloc include/linux/slab.h:512 [inline] kzalloc include/linux/slab.h:701 [inline] rds_loop_conn_alloc+0xc8/0x380 net/rds/loop.c:126 __rds_conn_create+0x112f/0x1b50 net/rds/connection.c:227 rds_conn_create_outgoing+0x3f/0x50 net/rds/connection.c:309 rds_sendmsg+0xda3/0x2390 net/rds/send.c:1126 sock_sendmsg_nosec net/socket.c:630 [inline] sock_sendmsg+0xca/0x110 net/socket.c:640 SYSC_sendto+0x361/0x5c0 net/socket.c:1747 SyS_sendto+0x40/0x50 net/socket.c:1715 do_syscall_64+0x282/0x940 arch/x86/entry/common.c:287 entry_SYSCALL_64_after_hwframe+0x26/0x9b RIP: 0033:0x453a59 RSP: 002b:00007f497f5b1c68 EFLAGS: 00000246 ORIG_RAX: 000000000000002c RAX: ffffffffffffffda RBX: 00007f497f5b26d4 RCX: 0000000000453a59 RDX: 0000000000000901 RSI: 00000000204c7000 RDI: 0000000000000014 RBP: 000000000071bea0 R08: 000000002055cff0 R09: 0000000000000010 R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff R13: 00000000000004b9 R14: 00000000006f71f8 R15: 0000000000000000 Unknown options in mask 430 Unknown options in mask 430 netlink: 'syz-executor2': attribute type 1 has an invalid length. netlink: 'syz-executor2': attribute type 1 has an invalid length. Protocol error: SET target dimension is over the limit! Protocol error: SET target dimension is over the limit! binder: BINDER_SET_CONTEXT_MGR already set binder_alloc: 5905: binder_alloc_buf, no vma binder: 5905:5922 transaction failed 29189/-3, size 0-0 line 2957 binder: 5905:5913 ioctl 40046207 0 returned -16 binder: undelivered TRANSACTION_ERROR: 29189 binder: release 5905:5913 transaction 2 out, still active binder: undelivered TRANSACTION_COMPLETE binder: send failed reply for transaction 2, target dead binder: 5943:5961 unknown command 0 binder: 5943:5961 ioctl c0306201 203d7fd0 returned -22 binder: 5943:5961 unknown command 0 binder: 5943:5961 ioctl c0306201 203d7fd0 returned -22 syz-executor1 (6115) used greatest stack depth: 15968 bytes left device syz4 entered promiscuous mode device syz4 left promiscuous mode device syz4 entered promiscuous mode device syz4 left promiscuous mode binder_alloc: binder_alloc_mmap_handler: 6127 20000000-20002000 already mapped failed -16 binder: BINDER_SET_CONTEXT_MGR already set binder: 6127:6132 ioctl 40046207 0 returned -16 binder_alloc: 6127: binder_alloc_buf, no vma binder: 6127:6161 transaction failed 29189/-3, size 80-16 line 2957 binder: 6127:6132 IncRefs 0 refcount change on invalid ref 2 ret -22 binder: undelivered TRANSACTION_ERROR: 29189 binder: release 6127:6132 transaction 5 out, still active binder: unexpected work type, 4, not freed binder: unexpected work type, 4, not freed binder: undelivered TRANSACTION_COMPLETE binder: send failed reply for transaction 5, target dead SELinux: unrecognized netlink message: protocol=0 nlmsg_type=44985 sclass=netlink_route_socket pig=6194 comm=syz-executor1 SELinux: unrecognized netlink message: protocol=0 nlmsg_type=44985 sclass=netlink_route_socket pig=6202 comm=syz-executor1 QAT: Invalid ioctl QAT: Invalid ioctl QAT: Invalid ioctl QAT: Invalid ioctl binder: 6280:6285 BC_FREE_BUFFER u0000000000000000 no match binder: 6280:6285 BC_FREE_BUFFER u0000000000000000 no match binder: 6280:6292 BC_FREE_BUFFER u0000000000000000 no match binder: 6280:6292 BC_FREE_BUFFER u0000000000000000 no match QAT: Invalid ioctl QAT: Invalid ioctl netlink: 8 bytes leftover after parsing attributes in process `syz-executor1'. Empty option to dns_resolver key Empty option to dns_resolver key QAT: Invalid ioctl QAT: Invalid ioctl x_tables: ip6_tables: rpfilter match: used from hooks PREROUTING/OUTPUT, but only valid from PREROUTING device eql entered promiscuous mode binder: undelivered death notification, 0000000000000000 x_tables: ip6_tables: rpfilter match: used from hooks PREROUTING/OUTPUT, but only valid from PREROUTING binder: BINDER_SET_CONTEXT_MGR already set binder: 6711:6715 ioctl 40046207 0 returned -16 netlink: 'syz-executor3': attribute type 1 has an invalid length. netlink: 'syz-executor3': attribute type 1 has an invalid length. IPVS: length: 696 != 8 binder: 6908:6922 BC_CLEAR_DEATH_NOTIFICATION invalid ref 1 binder: 6908:6922 BC_CLEAR_DEATH_NOTIFICATION invalid ref 1 binder: 6955:6957 BC_CLEAR_DEATH_NOTIFICATION invalid ref 1 QAT: Invalid ioctl QAT: Invalid ioctl binder: 6991:7027 BC_CLEAR_DEATH_NOTIFICATION invalid ref 1 kauditd_printk_skb: 14 callbacks suppressed audit: type=1400 audit(1518301306.414:43): avc: denied { ioctl } for pid=7029 comm="syz-executor3" path="socket:[18258]" dev="sockfs" ino=18258 ioctlcmd=0x8903 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tclass=netlink_netfilter_socket permissive=1 sctp: [Deprecated]: syz-executor3 (pid 7067) Use of struct sctp_assoc_value in delayed_ack socket option. Use struct sctp_sack_info instead binder: 7077:7079 BC_CLEAR_DEATH_NOTIFICATION invalid ref 1 audit: type=1400 audit(1518301306.690:44): avc: denied { map } for pid=7086 comm="syz-executor2" path="/selinux/mls" dev="selinuxfs" ino=12 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=system_u:object_r:security_t:s0 tclass=file permissive=1 binder: 7124:7126 BC_CLEAR_DEATH_NOTIFICATION invalid ref 1 binder: 7175:7176 BC_CLEAR_DEATH_NOTIFICATION invalid ref 1 binder: 7194:7195 BC_CLEAR_DEATH_NOTIFICATION invalid ref 1 binder: 7247:7260 BC_CLEAR_DEATH_NOTIFICATION invalid ref 1 binder: 7289:7291 BC_CLEAR_DEATH_NOTIFICATION invalid ref 1 audit: type=1400 audit(1518301307.654:45): avc: denied { map } for pid=7322 comm="syz-executor2" path="pipe:[19340]" dev="pipefs" ino=19340 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tclass=fifo_file permissive=1 binder: 7330:7331 BC_CLEAR_DEATH_NOTIFICATION invalid ref 1 binder: 7356:7357 BC_CLEAR_DEATH_NOTIFICATION invalid ref 1 device syz2 entered promiscuous mode device syz2 left promiscuous mode device syz2 entered promiscuous mode device syz2 left promiscuous mode audit: type=1400 audit(1518301308.719:46): avc: denied { setopt } for pid=7597 comm="syz-executor2" scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tclass=netlink_generic_socket permissive=1 audit: type=1400 audit(1518301308.872:47): avc: denied { getopt } for pid=7619 comm="syz-executor2" scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tclass=netlink_generic_socket permissive=1 encrypted_key: insufficient parameters specified encrypted_key: insufficient parameters specified device eql entered promiscuous mode binder: 7761:7765 got transaction to invalid handle binder: 7761:7765 transaction failed 29201/-22, size 0-0 line 2842 binder: 7761:7770 got transaction to invalid handle binder: 7761:7770 transaction failed 29201/-22, size 0-0 line 2842