============================= 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: ipt_CLUSTERIP: Please specify destination IP rcu_scheduler_active = 2, debug_locks = 1 1 lock held by syz-executor6/28035: #0: (rcu_read_lock){....}, at: [<00000000c43940f9>] __rds_conn_create+0xe46/0x1b50 net/rds/connection.c:218 stack backtrace: CPU: 1 PID: 28035 Comm: syz-executor6 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:00007f27a1c48c68 EFLAGS: 00000246 ORIG_RAX: 000000000000002c RAX: ffffffffffffffda RBX: 00007f27a1c496d4 RCX: 0000000000453a59 RDX: 0000000000000000 RSI: 0000000020218000 RDI: 0000000000000013 RBP: 000000000071bea0 R08: 0000000020af3ff0 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: 28035, name: syz-executor6 1 lock held by syz-executor6/28035: #0: (rcu_read_lock){....}, at: [<00000000c43940f9>] __rds_conn_create+0xe46/0x1b50 net/rds/connection.c:218 CPU: 1 PID: 28035 Comm: syz-executor6 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:00007f27a1c48c68 EFLAGS: 00000246 ORIG_RAX: 000000000000002c RAX: ffffffffffffffda RBX: 00007f27a1c496d4 RCX: 0000000000453a59 RDX: 0000000000000000 RSI: 0000000020218000 RDI: 0000000000000013 RBP: 000000000071bea0 R08: 0000000020af3ff0 R09: 0000000000000010 R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff R13: 00000000000004b9 R14: 00000000006f71f8 R15: 0000000000000000 device eql entered promiscuous mode binder: BINDER_SET_CONTEXT_MGR already set binder: 28138:28152 ioctl 40046207 0 returned -16 kauditd_printk_skb: 643 callbacks suppressed audit: type=1400 audit(1518303098.133:23294): avc: denied { net_admin } for pid=4225 comm="syz-executor1" capability=12 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 audit: type=1400 audit(1518303098.134:23295): avc: denied { net_admin } for pid=4225 comm="syz-executor1" capability=12 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 audit: type=1400 audit(1518303098.142:23296): avc: denied { net_admin } for pid=28160 comm="syz-executor6" capability=12 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 audit: type=1400 audit(1518303098.149:23297): avc: denied { net_admin } for pid=28160 comm="syz-executor6" capability=12 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 audit: type=1400 audit(1518303098.168:23298): avc: denied { net_admin } for pid=7834 comm="syz-executor6" capability=12 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 audit: type=1400 audit(1518303098.234:23299): avc: denied { net_admin } for pid=4215 comm="syz-executor4" capability=12 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 audit: type=1400 audit(1518303098.255:23300): avc: denied { net_admin } for pid=4219 comm="syz-executor3" capability=12 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 audit: type=1400 audit(1518303098.316:23301): avc: denied { net_admin } for pid=4223 comm="syz-executor2" capability=12 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 audit: type=1400 audit(1518303098.317:23302): avc: denied { map } for pid=28185 comm="modprobe" path="/bin/kmod" dev="sda1" ino=1440 scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:object_r:file_t:s0 tclass=file permissive=1 audit: type=1400 audit(1518303098.318:23303): avc: denied { net_admin } for pid=4223 comm="syz-executor2" capability=12 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 QAT: Invalid ioctl QAT: Invalid ioctl FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 CPU: 1 PID: 28377 Comm: syz-executor2 Tainted: G W 4.15.0+ #307 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 QAT: Invalid ioctl 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 should_failslab+0xec/0x120 mm/failslab.c:32 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 QAT: Invalid ioctl alloc_skb include/linux/skbuff.h:983 [inline] alloc_skb_with_frags+0x10d/0x750 net/core/skbuff.c:5190 sock_alloc_send_pskb+0x787/0x9b0 net/core/sock.c:2085 tun_alloc_skb drivers/net/tun.c:1536 [inline] tun_get_user+0x92e/0x3940 drivers/net/tun.c:1827 tun_chr_write_iter+0xbd/0x1c0 drivers/net/tun.c:1988 call_write_iter include/linux/fs.h:1781 [inline] new_sync_write fs/read_write.c:469 [inline] __vfs_write+0x684/0x970 fs/read_write.c:482 vfs_write+0x189/0x510 fs/read_write.c:544 SYSC_write fs/read_write.c:589 [inline] SyS_write+0xef/0x220 fs/read_write.c:581 do_syscall_64+0x282/0x940 arch/x86/entry/common.c:287 entry_SYSCALL_64_after_hwframe+0x26/0x9b RIP: 0033:0x453a59 RSP: 002b:00007f3135e68c68 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 00007f3135e696d4 RCX: 0000000000453a59 RDX: 0000000000000032 RSI: 0000000020fbd02e RDI: 0000000000000013 RBP: 000000000071bea0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000014 R13: 0000000000000660 R14: 00000000006f99a0 R15: 0000000000000000 FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 CPU: 0 PID: 28429 Comm: syz-executor2 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 should_failslab+0xec/0x120 mm/failslab.c:32 slab_pre_alloc_hook mm/slab.h:422 [inline] slab_alloc_node mm/slab.c:3286 [inline] kmem_cache_alloc_node_trace+0x5a/0x760 mm/slab.c:3648 __do_kmalloc_node mm/slab.c:3668 [inline] __kmalloc_node_track_caller+0x33/0x70 mm/slab.c:3683 __kmalloc_reserve.isra.39+0x41/0xd0 net/core/skbuff.c:137 __alloc_skb+0x13b/0x780 net/core/skbuff.c:205 alloc_skb include/linux/skbuff.h:983 [inline] alloc_skb_with_frags+0x10d/0x750 net/core/skbuff.c:5190 sock_alloc_send_pskb+0x787/0x9b0 net/core/sock.c:2085 tun_alloc_skb drivers/net/tun.c:1536 [inline] tun_get_user+0x92e/0x3940 drivers/net/tun.c:1827 tun_chr_write_iter+0xbd/0x1c0 drivers/net/tun.c:1988 call_write_iter include/linux/fs.h:1781 [inline] new_sync_write fs/read_write.c:469 [inline] __vfs_write+0x684/0x970 fs/read_write.c:482 vfs_write+0x189/0x510 fs/read_write.c:544 SYSC_write fs/read_write.c:589 [inline] SyS_write+0xef/0x220 fs/read_write.c:581 do_syscall_64+0x282/0x940 arch/x86/entry/common.c:287 entry_SYSCALL_64_after_hwframe+0x26/0x9b RIP: 0033:0x453a59 RSP: 002b:00007f3135e68c68 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 00007f3135e696d4 RCX: 0000000000453a59 RDX: 0000000000000032 RSI: 0000000020fbd02e RDI: 0000000000000013 RBP: 000000000071bea0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000014 R13: 0000000000000660 R14: 00000000006f99a0 R15: 0000000000000001 netlink: 'syz-executor6': attribute type 2 has an invalid length. netlink: 'syz-executor6': attribute type 2 has an invalid length. BUG: sleeping function called from invalid context at mm/slab.h:420 in_atomic(): 1, irqs_disabled(): 0, pid: 28626, name: syz-executor4 1 lock held by syz-executor4/28626: #0: (rcu_read_lock){....}, at: [<00000000c43940f9>] __rds_conn_create+0xe46/0x1b50 net/rds/connection.c:218 CPU: 0 PID: 28626 Comm: syz-executor4 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 ___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:00007f6c04f72c68 EFLAGS: 00000246 ORIG_RAX: 000000000000002c RAX: ffffffffffffffda RBX: 00007f6c04f736d4 RCX: 0000000000453a59 RDX: 0000000000000000 RSI: 0000000020c15000 RDI: 0000000000000013 RBP: 000000000071bea0 R08: 0000000020062000 R09: 0000000000000010 R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff R13: 00000000000004b9 R14: 00000000006f71f8 R15: 0000000000000000 Option '3Ø' to dns_resolver key: bad/missing value Option '3Ø' to dns_resolver key: bad/missing value QAT: Invalid ioctl 8021q: VLANs not supported on lo 8021q: VLANs not supported on lo xt_hashlimit: Unknown mode mask FFFFFFFE, kernel too old? kauditd_printk_skb: 629 callbacks suppressed audit: type=1400 audit(1518303103.135:23934): avc: denied { map } for pid=28836 comm="modprobe" path="/lib/x86_64-linux-gnu/libc-2.13.so" dev="sda1" ino=2784 scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:object_r:file_t:s0 tclass=file permissive=1 audit: type=1400 audit(1518303103.135:23933): avc: denied { net_admin } for pid=4225 comm="syz-executor1" capability=12 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 audit: type=1400 audit(1518303103.139:23935): avc: denied { map } for pid=28836 comm="modprobe" path="/lib/x86_64-linux-gnu/libc-2.13.so" dev="sda1" ino=2784 scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:object_r:file_t:s0 tclass=file permissive=1 audit: type=1400 audit(1518303103.147:23936): avc: denied { net_admin } for pid=4215 comm="syz-executor4" capability=12 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 audit: type=1400 audit(1518303103.147:23937): avc: denied { net_admin } for pid=4215 comm="syz-executor4" capability=12 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 audit: type=1400 audit(1518303103.153:23938): avc: denied { net_admin } for pid=4225 comm="syz-executor1" capability=12 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 audit: type=1400 audit(1518303103.156:23939): avc: denied { net_admin } for pid=4225 comm="syz-executor1" capability=12 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 audit: type=1400 audit(1518303103.168:23940): avc: denied { net_admin } for pid=4224 comm="syz-executor0" capability=12 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 audit: type=1400 audit(1518303103.188:23941): avc: denied { map } for pid=28846 comm="modprobe" path="/bin/kmod" dev="sda1" ino=1440 scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:object_r:file_t:s0 tclass=file permissive=1 audit: type=1400 audit(1518303103.188:23942): avc: denied { map } for pid=28846 comm="modprobe" path="/bin/kmod" dev="sda1" ino=1440 scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:object_r:file_t:s0 tclass=file permissive=1 xt_hashlimit: Unknown mode mask FFFFFFFE, kernel too old? tmpfs: Bad mount option ,4MÏÄ7ö³É tmpfs: Bad mount option ,4MÏÄ7ö³É do_dccp_getsockopt: sockopt(PACKET_SIZE) is deprecated: fix your app do_dccp_getsockopt: sockopt(PACKET_SIZE) is deprecated: fix your app device eql entered promiscuous mode FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 CPU: 1 PID: 29287 Comm: syz-executor0 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 QAT: Invalid ioctl fail_dump lib/fault-inject.c:51 [inline] should_fail+0x8c0/0xa40 lib/fault-inject.c:149 should_failslab+0xec/0x120 mm/failslab.c:32 slab_pre_alloc_hook mm/slab.h:422 [inline] slab_alloc mm/slab.c:3365 [inline] kmem_cache_alloc+0x47/0x760 mm/slab.c:3539 kmem_cache_zalloc include/linux/slab.h:691 [inline] avc_alloc_node+0x27/0x4d0 security/selinux/avc.c:549 avc_insert security/selinux/avc.c:668 [inline] avc_compute_av+0x22a/0x710 security/selinux/avc.c:974 avc_has_extended_perms+0x881/0x12c0 security/selinux/avc.c:1022 ioctl_has_perm security/selinux/hooks.c:3497 [inline] selinux_file_ioctl+0x3ee/0x690 security/selinux/hooks.c:3545 security_file_ioctl+0x7d/0xb0 security/security.c:883 SYSC_ioctl fs/ioctl.c:699 [inline] SyS_ioctl+0x4a/0xc0 fs/ioctl.c:692 do_syscall_64+0x282/0x940 arch/x86/entry/common.c:287 entry_SYSCALL_64_after_hwframe+0x26/0x9b RIP: 0033:0x453a59 RSP: 002b:00007fb56faafc68 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007fb56fab06d4 RCX: 0000000000453a59 RDX: 000000002000cffc RSI: 00000000400454dc RDI: 0000000000000012 RBP: 000000000071bea0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000014 R13: 0000000000000347 R14: 00000000006f4f48 R15: 0000000000000000 QAT: Invalid ioctl binder: 29489:29492 ioctl 401845e0 2026e000 returned -22 binder: BINDER_SET_CONTEXT_MGR already set binder: 29489:29507 ioctl 401845e0 2026e000 returned -22 binder: 29489:29504 ioctl 40046207 0 returned -16