binder: BINDER_SET_CONTEXT_MGR already set ============================= WARNING: suspicious RCU usage 4.15.0+ #307 Not tainted snd_dummy snd_dummy.0: control 76:0:0:Î:0 is already present ----------------------------- ./include/linux/rcupdate.h:302 Illegal context switch in RCU read-side critical section! binder: 29470:29486 ioctl 40046207 0 returned -16 other info that might help us debug this: rcu_scheduler_active = 2, debug_locks = 1 1 lock held by syz-executor7/29481: #0: (rcu_read_lock){....}, at: [<00000000e24f6655>] __rds_conn_create+0xe46/0x1b50 net/rds/connection.c:218 stack backtrace: CPU: 1 PID: 29481 Comm: syz-executor7 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:00007f14a3139c68 EFLAGS: 00000246 ORIG_RAX: 000000000000002c RAX: ffffffffffffffda RBX: 00007f14a313a6d4 RCX: 0000000000453a59 RDX: 0000000000000000 RSI: 0000000020dbf000 RDI: 0000000000000014 RBP: 000000000071bea0 R08: 0000000020b2d000 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: 29481, name: syz-executor7 1 lock held by syz-executor7/29481: #0: (rcu_read_lock){....}, at: [<00000000e24f6655>] __rds_conn_create+0xe46/0x1b50 net/rds/connection.c:218 CPU: 1 PID: 29481 Comm: syz-executor7 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 snd_dummy snd_dummy.0: control 76:0:0:Î:0 is already present __rds_conn_create+0x112f/0x1b50 net/rds/connection.c:227 snd_dummy snd_dummy.0: control 76:0:0:Î:0 is already present 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:00007f14a3139c68 EFLAGS: 00000246 ORIG_RAX: 000000000000002c RAX: ffffffffffffffda RBX: 00007f14a313a6d4 RCX: 0000000000453a59 RDX: 0000000000000000 RSI: 0000000020dbf000 RDI: 0000000000000014 RBP: 000000000071bea0 R08: 0000000020b2d000 R09: 0000000000000010 R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff R13: 00000000000004b9 R14: 00000000006f71f8 R15: 0000000000000000 QAT: Invalid ioctl snd_dummy snd_dummy.0: control 76:0:0:Î:0 is already present QAT: Invalid ioctl snd_dummy snd_dummy.0: control 76:0:0:Î:0 is already present mac80211_hwsim: wmediumd released netlink socket, switching to perfect channel medium snd_dummy snd_dummy.0: control 76:0:0:Î:0 is already present mac80211_hwsim: wmediumd released netlink socket, switching to perfect channel medium mac80211_hwsim: wmediumd released netlink socket, switching to perfect channel medium QAT: Invalid ioctl mac80211_hwsim: wmediumd released netlink socket, switching to perfect channel medium QAT: Invalid ioctl QAT: Invalid ioctl snd_dummy snd_dummy.0: control 76:0:0:Î:0 is already present QAT: Invalid ioctl QAT: Invalid ioctl QAT: Invalid ioctl mac80211_hwsim: wmediumd released netlink socket, switching to perfect channel medium audit: type=1401 audit(1518299975.505:86): op=security_bounded_transition seresult=denied oldcontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 newcontext=system_u:object_r:getty_var_run_t:s0 QAT: Invalid ioctl snd_dummy snd_dummy.0: control 76:0:0:Î:0 is already present QAT: Invalid ioctl snd_dummy snd_dummy.0: control 76:0:0:Î:0 is already present snd_dummy snd_dummy.0: control 76:0:0:Î:0 is already present snd_dummy snd_dummy.0: control 76:0:0:Î:0 is already present QAT: Invalid ioctl snd_dummy snd_dummy.0: control 76:0:0:Î:0 is already present QAT: Invalid ioctl snd_dummy snd_dummy.0: control 76:0:0:Î:0 is already present snd_dummy snd_dummy.0: control 76:0:0:Î:0 is already present snd_dummy snd_dummy.0: control 76:0:0:Î:0 is already present snd_dummy snd_dummy.0: control 76:0:0:Î:0 is already present snd_dummy snd_dummy.0: control 76:0:0:Î:0 is already present snd_dummy snd_dummy.0: control 76:0:0:Î:0 is already present snd_dummy snd_dummy.0: control 76:0:0:Î:0 is already present *** Guest State *** CR0: actual=0xffffffff9ffffffc, shadow=0xfffffffffffffffc, gh_mask=fffffffffffffff7 CR4: actual=0x0000000000002040, shadow=0x0000000000000000, gh_mask=ffffffffffffe871 CR3 = 0x0000000000000000 RSP = 0x0000000000000000 RIP = 0x0000000000008000 RFLAGS=0x00010002 DR7 = 0x0000000000000400 Sysenter RSP=0000000000000000 CS:RIP=0000:0000000000000000 CS: sel=0x0000, attr=0x10000, limit=0x00000000, base=0x0000000000000000 DS: sel=0x0000, attr=0x10000, limit=0x00000000, base=0x0000000000000000 SS: sel=0x0000, attr=0x10000, limit=0x00000000, base=0x0000000000000000 ES: sel=0x0000, attr=0x10000, limit=0x00000000, base=0x0000000000000000 FS: sel=0x0000, attr=0x10000, limit=0x00000000, base=0x0000000000000000 snd_dummy snd_dummy.0: control 76:0:0:Î:0 is already present GS: sel=0x0000, attr=0x10000, limit=0x00000000, base=0x0000000000000000 GDTR: limit=0x00000000, base=0x0000000000000000 LDTR: sel=0x0000, attr=0x10000, limit=0x00000000, base=0x0000000000000000 snd_dummy snd_dummy.0: control 76:0:0:Î:0 is already present IDTR: limit=0x00000000, base=0x0000000000000000 TR: sel=0x0000, attr=0x10000, limit=0x00000000, base=0x0000000000000000 EFER = 0x0000000000000000 PAT = 0x0007040600070406 DebugCtl = 0x0000000000000000 DebugExceptions = 0x0000000000000000 Interruptibility = 00000008 ActivityState = 00000000 *** Host State *** RIP = 0xffffffff811c99dc RSP = 0xffff8801cebe73b8 CS=0010 SS=0018 DS=0000 ES=0000 FS=0000 GS=0000 TR=0040 FSBase=00007fa2ccca0700 GSBase=ffff8801db500000 TRBase=fffffe0000034000 GDTBase=fffffe0000032000 IDTBase=fffffe0000000000 CR0=0000000080050033 CR3=00000001b10cb005 CR4=00000000001626e0 Sysenter RSP=fffffe0000033200 CS:RIP=0010:ffffffff85a019f0 EFER = 0x0000000000000d01 PAT = 0x0000000000000000 *** Control State *** PinBased=0000003f CPUBased=b6986dfa SecondaryExec=000000c2 EntryControls=0000d1ff ExitControls=0023efff ExceptionBitmap=00060042 PFECmask=00000000 PFECmatch=00000000 VMEntry: intr_info=80000306 errcode=00000000 ilen=00000000 VMExit: intr_info=00000000 errcode=00000000 ilen=00000003 reason=80000021 qualification=0000000000000000 IDTVectoring: info=00000000 errcode=00000000 TSC Offset = 0xffffffae617194ee EPT pointer = 0x00000001be7d401e QAT: Invalid ioctl snd_dummy snd_dummy.0: control 76:0:0:Î:0 is already present QAT: Invalid ioctl QAT: Invalid ioctl snd_dummy snd_dummy.0: control 76:0:0:Î:0 is already present QAT: Invalid ioctl snd_dummy snd_dummy.0: control 76:0:0:Î:0 is already present mac80211_hwsim: wmediumd released netlink socket, switching to perfect channel medium snd_dummy snd_dummy.0: control 76:0:0:Î:0 is already present snd_dummy snd_dummy.0: control 76:0:0:Î:0 is already present QAT: Invalid ioctl snd_dummy snd_dummy.0: control 76:0:0:Î:0 is already present QAT: Invalid ioctl snd_dummy snd_dummy.0: control 76:0:0:Î:0 is already present mac80211_hwsim: wmediumd released netlink socket, switching to perfect channel medium snd_dummy snd_dummy.0: control 76:0:0:Î:0 is already present FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 CPU: 1 PID: 30127 Comm: syz-executor3 Tainted: G W 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 fail_dump lib/fault-inject.c:51 [inline] should_fail+0x8c0/0xa40 lib/fault-inject.c:149 binder: BINDER_SET_CONTEXT_MGR already set binder: 30118:30125 ioctl 40046207 0 returned -16 binder_alloc: 30118: binder_alloc_buf, no vma should_failslab+0xec/0x120 mm/failslab.c:32 binder: 30118:30140 transaction failed 29189/-3, size 80-16 line 2957 slab_pre_alloc_hook mm/slab.h:422 [inline] slab_alloc_node mm/slab.c:3286 [inline] kmem_cache_alloc_node+0x56/0x760 mm/slab.c:3629 __alloc_skb+0xf1/0x780 net/core/skbuff.c:193 alloc_skb include/linux/skbuff.h:983 [inline] netlink_alloc_large_skb net/netlink/af_netlink.c:1180 [inline] netlink_sendmsg+0xa86/0xe60 net/netlink/af_netlink.c:1872 sock_sendmsg_nosec net/socket.c:630 [inline] sock_sendmsg+0xca/0x110 net/socket.c:640 ___sys_sendmsg+0x767/0x8b0 net/socket.c:2046 __sys_sendmsg+0xe5/0x210 net/socket.c:2080 SYSC_sendmsg net/socket.c:2091 [inline] SyS_sendmsg+0x2d/0x50 net/socket.c:2087 do_syscall_64+0x282/0x940 arch/x86/entry/common.c:287 snd_dummy snd_dummy.0: control 76:0:0:Î:0 is already present entry_SYSCALL_64_after_hwframe+0x26/0x9b RIP: 0033:0x453a59 RSP: 002b:00007f78c2c2ec68 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007f78c2c2f6d4 RCX: 0000000000453a59 RDX: 0000000000000000 RSI: 0000000020018000 RDI: 0000000000000013 RBP: 000000000071bea0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000014 R13: 00000000000004b1 R14: 00000000006f7138 R15: 0000000000000000 binder: undelivered TRANSACTION_ERROR: 29189 binder: release 30118:30125 transaction 32 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 32, target dead QAT: Invalid ioctl mac80211_hwsim: wmediumd released netlink socket, switching to perfect channel medium snd_dummy snd_dummy.0: control 76:0:0:Î:0 is already present QAT: Invalid ioctl QAT: Invalid ioctl QAT: Invalid ioctl snd_dummy snd_dummy.0: control 76:0:0:Î:0 is already present mac80211_hwsim: wmediumd released netlink socket, switching to perfect channel medium QAT: Invalid ioctl mac80211_hwsim: wmediumd released netlink socket, switching to perfect channel medium snd_dummy snd_dummy.0: control 76:0:0:Î:0 is already present QAT: Invalid ioctl snd_dummy snd_dummy.0: control 76:0:0:Î:0 is already present mac80211_hwsim: wmediumd released netlink socket, switching to perfect channel medium snd_dummy snd_dummy.0: control 76:0:0:Î:0 is already present mac80211_hwsim: wmediumd released netlink socket, switching to perfect channel medium snd_dummy snd_dummy.0: control 76:0:0:Î:0 is already present snd_dummy snd_dummy.0: control 76:0:0:Î:0 is already present mac80211_hwsim: wmediumd released netlink socket, switching to perfect channel medium snd_dummy snd_dummy.0: control 76:0:0:Î:0 is already present mac80211_hwsim: wmediumd released netlink socket, switching to perfect channel medium snd_dummy snd_dummy.0: control 76:0:0:Î:0 is already present mac80211_hwsim: wmediumd released netlink socket, switching to perfect channel medium snd_dummy snd_dummy.0: control 76:0:0:Î:0 is already present snd_dummy snd_dummy.0: control 76:0:0:Î:0 is already present QAT: Invalid ioctl QAT: Invalid ioctl QAT: Invalid ioctl QAT: Invalid ioctl QAT: Invalid ioctl mac80211_hwsim: wmediumd released netlink socket, switching to perfect channel medium QAT: Invalid ioctl QAT: Invalid ioctl QAT: Invalid ioctl QAT: Invalid ioctl QAT: Invalid ioctl snd_dummy snd_dummy.0: control 76:0:0:Î:0 is already present mac80211_hwsim: wmediumd released netlink socket, switching to perfect channel medium snd_dummy snd_dummy.0: control 76:0:0:Î:0 is already present mac80211_hwsim: wmediumd released netlink socket, switching to perfect channel medium snd_dummy snd_dummy.0: control 76:0:0:Î:0 is already present snd_dummy snd_dummy.0: control 76:0:0:Î:0 is already present mac80211_hwsim: wmediumd released netlink socket, switching to perfect channel medium QAT: Invalid ioctl snd_dummy snd_dummy.0: control 76:0:0:Î:0 is already present QAT: Invalid ioctl mac80211_hwsim: wmediumd released netlink socket, switching to perfect channel medium snd_dummy snd_dummy.0: control 76:0:0:Î:0 is already present mac80211_hwsim: wmediumd released netlink socket, switching to perfect channel medium snd_dummy snd_dummy.0: control 76:0:0:Î:0 is already present QAT: Invalid ioctl QAT: Invalid ioctl snd_dummy snd_dummy.0: control 120:0:0:Î:0 is already present QAT: Invalid ioctl mac80211_hwsim: wmediumd released netlink socket, switching to perfect channel medium QAT: Invalid ioctl snd_dummy snd_dummy.0: control 120:0:0:Î:0 is already present mac80211_hwsim: wmediumd released netlink socket, switching to perfect channel medium mac80211_hwsim: wmediumd released netlink socket, switching to perfect channel medium snd_dummy snd_dummy.0: control 76:0:0:Î:0 is already present snd_dummy snd_dummy.0: control 76:0:0:Î:0 is already present mac80211_hwsim: wmediumd released netlink socket, switching to perfect channel medium snd_dummy snd_dummy.0: control 76:0:0:Î:0 is already present snd_dummy snd_dummy.0: control 76:0:0:Î:0 is already present mac80211_hwsim: wmediumd released netlink socket, switching to perfect channel medium snd_dummy snd_dummy.0: control 76:0:0:Î:0 is already present mac80211_hwsim: wmediumd released netlink socket, switching to perfect channel medium snd_dummy snd_dummy.0: control 76:0:0:Î:0 is already present audit: type=1400 audit(1518299980.644:87): avc: denied { net_bind_service } for pid=1231 comm="kworker/u5:0" capability=10 scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=cap_userns permissive=1 mac80211_hwsim: wmediumd released netlink socket, switching to perfect channel medium snd_dummy snd_dummy.0: control 76:0:0:Î:0 is already present snd_dummy snd_dummy.0: control 76:0:0:Î:0 is already present mac80211_hwsim: wmediumd released netlink socket, switching to perfect channel medium snd_dummy snd_dummy.0: control 76:0:0:Î:0 is already present mac80211_hwsim: wmediumd released netlink socket, switching to perfect channel medium snd_dummy snd_dummy.0: control 76:0:0:Î:0 is already present QAT: Invalid ioctl mac80211_hwsim: wmediumd released netlink socket, switching to perfect channel medium snd_dummy snd_dummy.0: control 76:0:0:Î:0 is already present QAT: Invalid ioctl QAT: Invalid ioctl snd_dummy snd_dummy.0: control 76:0:0:Î:0 is already present QAT: Invalid ioctl QAT: Invalid ioctl snd_dummy snd_dummy.0: control 76:0:0:Î:0 is already present QAT: Invalid ioctl mac80211_hwsim: wmediumd released netlink socket, switching to perfect channel medium QAT: Invalid ioctl mac80211_hwsim: wmediumd released netlink socket, switching to perfect channel medium QAT: Invalid ioctl QAT: Invalid ioctl QAT: Invalid ioctl QAT: Invalid ioctl QAT: Invalid ioctl QAT: Invalid ioctl mac80211_hwsim: wmediumd released netlink socket, switching to perfect channel medium snd_dummy snd_dummy.0: control 76:0:0:Î:0 is already present snd_dummy snd_dummy.0: control 76:0:0:Î:0 is already present QAT: Invalid ioctl snd_dummy snd_dummy.0: control 76:0:0:Î:0 is already present mac80211_hwsim: wmediumd released netlink socket, switching to perfect channel medium QAT: Invalid ioctl snd_dummy snd_dummy.0: control 76:0:0:Î:0 is already present snd_dummy snd_dummy.0: control 76:0:0:Î:0 is already present netlink: 188 bytes leftover after parsing attributes in process `syz-executor3'. netlink: 188 bytes leftover after parsing attributes in process `syz-executor3'. snd_dummy snd_dummy.0: control 76:0:0:Î:0 is already present mac80211_hwsim: wmediumd released netlink socket, switching to perfect channel medium QAT: Invalid ioctl snd_dummy snd_dummy.0: control 76:0:0:Î:0 is already present mac80211_hwsim: wmediumd released netlink socket, switching to perfect channel medium binder: 31194:31196 got transaction to invalid handle binder: 31194:31196 transaction failed 29201/-22, size 512-8 line 2842 binder: 31194:31196 BC_ACQUIRE_DONE uffffffffffffffff no match binder: 31194:31196 BC_REQUEST_DEATH_NOTIFICATION invalid ref 4 mac80211_hwsim: wmediumd released netlink socket, switching to perfect channel medium binder: 31194:31196 got transaction to invalid handle binder: 31194:31196 transaction failed 29201/-22, size 56-56 line 2842 QAT: Invalid ioctl snd_dummy snd_dummy.0: control 76:0:0:Î:0 is already present binder: BINDER_SET_CONTEXT_MGR already set binder: 31194:31203 ioctl 40046207 0 returned -16 binder: 31194:31196 got transaction to invalid handle binder: 31194:31196 transaction failed 29201/-22, size 512-8 line 2842 binder: undelivered TRANSACTION_ERROR: 29201 binder: undelivered TRANSACTION_ERROR: 29201 QAT: Invalid ioctl audit: type=1400 audit(1518299982.733:88): avc: denied { map } for pid=31205 comm="syz-executor7" path="socket:[75522]" dev="sockfs" ino=75522 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tclass=rawip_socket permissive=1 snd_dummy snd_dummy.0: control 76:0:0:Î:0 is already present mac80211_hwsim: wmediumd released netlink socket, switching to perfect channel medium QAT: Invalid ioctl snd_dummy snd_dummy.0: control 76:0:0:Î:0 is already present QAT: Invalid ioctl netlink: 126 bytes leftover after parsing attributes in process `syz-executor3'. netlink: 17 bytes leftover after parsing attributes in process `syz-executor5'. netlink: 126 bytes leftover after parsing attributes in process `syz-executor3'. QAT: Invalid ioctl netlink: 17 bytes leftover after parsing attributes in process `syz-executor5'. mac80211_hwsim: wmediumd released netlink socket, switching to perfect channel medium QAT: Invalid ioctl snd_dummy snd_dummy.0: control 76:0:0:Î:0 is already present mac80211_hwsim: wmediumd released netlink socket, switching to perfect channel medium QAT: Invalid ioctl snd_dummy snd_dummy.0: control 76:0:0:Î:0 is already present mac80211_hwsim: wmediumd released netlink socket, switching to perfect channel medium snd_dummy snd_dummy.0: control 76:0:0:Î:0 is already present autofs4:pid:31360:check_dev_ioctl_version: ioctl control interface version mismatch: kernel(1.1), user(3590324411.0), cmd(0x0000937e) autofs4:pid:31360:validate_dev_ioctl: invalid device control module version supplied for cmd(0x0000937e) snd_dummy snd_dummy.0: control 76:0:0:Î:0 is already present mac80211_hwsim: wmediumd released netlink socket, switching to perfect channel medium snd_dummy snd_dummy.0: control 76:0:0:Î:0 is already present mac80211_hwsim: wmediumd released netlink socket, switching to perfect channel medium snd_dummy snd_dummy.0: control 76:0:0:Î:0 is already present sock: process `syz-executor5' is using obsolete getsockopt SO_BSDCOMPAT snd_dummy snd_dummy.0: control 76:0:0:Î:0 is already present mac80211_hwsim: wmediumd released netlink socket, switching to perfect channel medium snd_dummy snd_dummy.0: control 76:0:0:Î:0 is already present QAT: Invalid ioctl QAT: Invalid ioctl snd_dummy snd_dummy.0: control 76:0:0:Î:0 is already present QAT: Invalid ioctl QAT: Invalid ioctl snd_dummy snd_dummy.0: control 76:0:0:Î:0 is already present mac80211_hwsim: wmediumd released netlink socket, switching to perfect channel medium snd_dummy snd_dummy.0: control 76:0:0:Î:0 is already present mac80211_hwsim: wmediumd released netlink socket, switching to perfect channel medium