====================================================== WARNING: possible circular locking dependency detected 4.14.0+ #193 Not tainted ------------------------------------------------------ syz-executor6/12390 is trying to acquire lock: (&sb->s_type->i_mutex_key#10){++++}, at: [] inode_lock include/linux/fs.h:713 [inline] (&sb->s_type->i_mutex_key#10){++++}, at: [] generic_file_write_iter+0xdc/0x7a0 mm/filemap.c:3289 but task is already holding lock: (&pipe->mutex/1){+.+.}, at: [] pipe_lock_nested fs/pipe.c:67 [inline] (&pipe->mutex/1){+.+.}, at: [] pipe_lock fs/pipe.c:75 [inline] (&pipe->mutex/1){+.+.}, at: [] pipe_wait+0x1e6/0x280 fs/pipe.c:123 which lock already depends on the new lock. the existing dependency chain (in reverse order) is: -> #6 (&pipe->mutex/1){+.+.}: lock_acquire+0x1d5/0x580 kernel/locking/lockdep.c:4004 __mutex_lock_common kernel/locking/mutex.c:756 [inline] __mutex_lock+0x16f/0x1a80 kernel/locking/mutex.c:893 mutex_lock_nested+0x16/0x20 kernel/locking/mutex.c:908 pipe_lock_nested fs/pipe.c:67 [inline] pipe_lock+0x56/0x70 fs/pipe.c:75 iter_file_splice_write+0x264/0xf30 fs/splice.c:699 do_splice_from fs/splice.c:851 [inline] do_splice fs/splice.c:1147 [inline] SYSC_splice fs/splice.c:1402 [inline] SyS_splice+0x7d5/0x1630 fs/splice.c:1382 entry_SYSCALL_64_fastpath+0x1f/0x96 -> #5 (sb_writers){.+.+}: spin_lock include/linux/spinlock.h:315 [inline] lockref_get_not_dead+0x19/0x80 lib/lockref.c:180 -> #4 ((completion)&req.done){+.+.}: lock_acquire+0x1d5/0x580 kernel/locking/lockdep.c:4004 complete_acquire include/linux/completion.h:40 [inline] __wait_for_common kernel/sched/completion.c:109 [inline] wait_for_common kernel/sched/completion.c:123 [inline] wait_for_completion+0xcb/0x7b0 kernel/sched/completion.c:144 devtmpfs_create_node+0x32b/0x4a0 drivers/base/devtmpfs.c:115 device_add+0x120f/0x1640 drivers/base/core.c:1824 device_create_groups_vargs+0x1f3/0x250 drivers/base/core.c:2430 device_create_vargs drivers/base/core.c:2470 [inline] device_create+0xda/0x110 drivers/base/core.c:2506 msr_device_create+0x26/0x40 arch/x86/kernel/msr.c:188 cpuhp_invoke_callback+0x2ea/0x1d20 kernel/cpu.c:182 cpuhp_thread_fun+0x48e/0x7e0 kernel/cpu.c:571 smpboot_thread_fn+0x450/0x7c0 kernel/smpboot.c:164 kthread+0x37a/0x440 kernel/kthread.c:238 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:437 -> #3 (cpuhp_state-up){+.+.}: lock_acquire+0x1d5/0x580 kernel/locking/lockdep.c:4004 cpuhp_lock_acquire kernel/cpu.c:85 [inline] cpuhp_invoke_ap_callback kernel/cpu.c:605 [inline] cpuhp_issue_call+0x1e5/0x520 kernel/cpu.c:1495 __cpuhp_setup_state_cpuslocked+0x282/0x600 kernel/cpu.c:1642 __cpuhp_setup_state+0xb0/0x140 kernel/cpu.c:1671 cpuhp_setup_state include/linux/cpuhotplug.h:201 [inline] page_writeback_init+0x4d/0x71 mm/page-writeback.c:2083 pagecache_init+0x48/0x4f mm/filemap.c:977 start_kernel+0x6bc/0x74f init/main.c:690 x86_64_start_reservations+0x2a/0x2c arch/x86/kernel/head64.c:378 x86_64_start_kernel+0x77/0x7a arch/x86/kernel/head64.c:359 secondary_startup_64+0xa5/0xb0 arch/x86/kernel/head_64.S:237 -> #2 (cpuhp_state_mutex){+.+.}: lock_acquire+0x1d5/0x580 kernel/locking/lockdep.c:4004 __mutex_lock_common kernel/locking/mutex.c:756 [inline] __mutex_lock+0x16f/0x1a80 kernel/locking/mutex.c:893 mutex_lock_nested+0x16/0x20 kernel/locking/mutex.c:908 __cpuhp_setup_state_cpuslocked+0x5b/0x600 kernel/cpu.c:1617 __cpuhp_setup_state+0xb0/0x140 kernel/cpu.c:1671 cpuhp_setup_state_nocalls include/linux/cpuhotplug.h:229 [inline] kvm_guest_init+0x1f3/0x20f arch/x86/kernel/kvm.c:528 setup_arch+0x17e8/0x1a02 arch/x86/kernel/setup.c:1266 start_kernel+0xa5/0x74f init/main.c:530 x86_64_start_reservations+0x2a/0x2c arch/x86/kernel/head64.c:378 x86_64_start_kernel+0x77/0x7a arch/x86/kernel/head64.c:359 secondary_startup_64+0xa5/0xb0 arch/x86/kernel/head_64.S:237 -> #1 (cpu_hotplug_lock.rw_sem){++++}: lock_acquire+0x1d5/0x580 kernel/locking/lockdep.c:4004 percpu_down_read_preempt_disable include/linux/percpu-rwsem.h:36 [inline] percpu_down_read include/linux/percpu-rwsem.h:59 [inline] cpus_read_lock+0x42/0x90 kernel/cpu.c:293 get_online_cpus include/linux/cpu.h:117 [inline] lru_add_drain_all+0xe/0x20 mm/swap.c:729 shmem_wait_for_pins mm/shmem.c:2672 [inline] shmem_add_seals+0x3df/0x1060 mm/shmem.c:2780 shmem_fcntl+0xfe/0x130 mm/shmem.c:2815 do_fcntl+0x73e/0x1160 fs/fcntl.c:421 SYSC_fcntl fs/fcntl.c:463 [inline] SyS_fcntl+0xdc/0x120 fs/fcntl.c:448 entry_SYSCALL_64_fastpath+0x1f/0x96 -> #0 (&sb->s_type->i_mutex_key#10){++++}: check_prevs_add kernel/locking/lockdep.c:2031 [inline] validate_chain kernel/locking/lockdep.c:2473 [inline] __lock_acquire+0x3498/0x47f0 kernel/locking/lockdep.c:3500 lock_acquire+0x1d5/0x580 kernel/locking/lockdep.c:4004 down_write+0x87/0x120 kernel/locking/rwsem.c:70 inode_lock include/linux/fs.h:713 [inline] generic_file_write_iter+0xdc/0x7a0 mm/filemap.c:3289 call_write_iter include/linux/fs.h:1772 [inline] do_iter_readv_writev+0x531/0x7f0 fs/read_write.c:653 do_iter_write+0x15a/0x540 fs/read_write.c:932 vfs_iter_write+0x77/0xb0 fs/read_write.c:945 iter_file_splice_write+0x7db/0xf30 fs/splice.c:749 do_splice_from fs/splice.c:851 [inline] do_splice fs/splice.c:1147 [inline] SYSC_splice fs/splice.c:1402 [inline] SyS_splice+0x7d5/0x1630 fs/splice.c:1382 entry_SYSCALL_64_fastpath+0x1f/0x96 other info that might help us debug this: Chain exists of: &sb->s_type->i_mutex_key#10 --> sb_writers --> &pipe->mutex/1 Possible unsafe locking scenario: CPU0 CPU1 ---- ---- lock(&pipe->mutex/1); lock(sb_writers); lock(&pipe->mutex/1); lock(&sb->s_type->i_mutex_key#10); *** DEADLOCK *** 2 locks held by syz-executor6/12390: #0: (sb_writers#5){.+.+}, at: [] file_start_write include/linux/fs.h:2715 [inline] #0: (sb_writers#5){.+.+}, at: [] do_splice fs/splice.c:1146 [inline] #0: (sb_writers#5){.+.+}, at: [] SYSC_splice fs/splice.c:1402 [inline] #0: (sb_writers#5){.+.+}, at: [] SyS_splice+0x1117/0x1630 fs/splice.c:1382 #1: (&pipe->mutex/1){+.+.}, at: [] pipe_lock_nested fs/pipe.c:67 [inline] #1: (&pipe->mutex/1){+.+.}, at: [] pipe_lock fs/pipe.c:75 [inline] #1: (&pipe->mutex/1){+.+.}, at: [] pipe_wait+0x1e6/0x280 fs/pipe.c:123 stack backtrace: CPU: 1 PID: 12390 Comm: syz-executor6 Not tainted 4.14.0+ #193 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 print_circular_bug+0x42d/0x610 kernel/locking/lockdep.c:1271 check_prev_add+0x666/0x15f0 kernel/locking/lockdep.c:1914 check_prevs_add kernel/locking/lockdep.c:2031 [inline] validate_chain kernel/locking/lockdep.c:2473 [inline] __lock_acquire+0x3498/0x47f0 kernel/locking/lockdep.c:3500 lock_acquire+0x1d5/0x580 kernel/locking/lockdep.c:4004 down_write+0x87/0x120 kernel/locking/rwsem.c:70 inode_lock include/linux/fs.h:713 [inline] generic_file_write_iter+0xdc/0x7a0 mm/filemap.c:3289 call_write_iter include/linux/fs.h:1772 [inline] do_iter_readv_writev+0x531/0x7f0 fs/read_write.c:653 do_iter_write+0x15a/0x540 fs/read_write.c:932 vfs_iter_write+0x77/0xb0 fs/read_write.c:945 iter_file_splice_write+0x7db/0xf30 fs/splice.c:749 do_splice_from fs/splice.c:851 [inline] do_splice fs/splice.c:1147 [inline] SYSC_splice fs/splice.c:1402 [inline] SyS_splice+0x7d5/0x1630 fs/splice.c:1382 entry_SYSCALL_64_fastpath+0x1f/0x96 RIP: 0033:0x452879 RSP: 002b:00007f4136becbe8 EFLAGS: 00000212 ORIG_RAX: 0000000000000113 RAX: ffffffffffffffda RBX: 00000000007580d8 RCX: 0000000000452879 RDX: 0000000000000022 RSI: 0000000000000000 RDI: 0000000000000020 RBP: 0000000000000086 R08: 00000000fffffffe R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000212 R12: 00000000006f2cb0 R13: 00000000ffffffff R14: 00007f4136bed6d4 R15: 0000000000000001 netlink: 16 bytes leftover after parsing attributes in process `syz-executor7'. device gre0 entered promiscuous mode SELinux: unrecognized netlink message: protocol=6 nlmsg_type=514 sclass=netlink_xfrm_socket pig=12515 comm=syz-executor1 SELinux: unrecognized netlink message: protocol=6 nlmsg_type=514 sclass=netlink_xfrm_socket pig=12515 comm=syz-executor1 autofs4:pid:12552:check_dev_ioctl_version: ioctl control interface version mismatch: kernel(1.1), user(0.256), cmd(0x0000937e) autofs4:pid:12552:validate_dev_ioctl: invalid device control module version supplied for cmd(0x0000937e) autofs4:pid:12552:check_dev_ioctl_version: ioctl control interface version mismatch: kernel(1.1), user(0.256), cmd(0x0000937e) autofs4:pid:12552:validate_dev_ioctl: invalid device control module version supplied for cmd(0x0000937e) device gre0 entered promiscuous mode device gre0 entered promiscuous mode RDS: rds_bind could not find a transport for 172.20.6.170, load rds_tcp or rds_rdma? RDS: rds_bind could not find a transport for 172.20.6.170, load rds_tcp or rds_rdma? sctp: [Deprecated]: syz-executor0 (pid 12664) Use of struct sctp_assoc_value in delayed_ack socket option. Use struct sctp_sack_info instead QAT: Invalid ioctl RDS: rds_bind could not find a transport for 172.20.0.170, load rds_tcp or rds_rdma? QAT: Invalid ioctl SELinux: unrecognized netlink message: protocol=4 nlmsg_type=17 sclass=netlink_tcpdiag_socket pig=12755 comm=syz-executor4 netlink: 4 bytes leftover after parsing attributes in process `syz-executor5'. SELinux: unrecognized netlink message: protocol=4 nlmsg_type=17 sclass=netlink_tcpdiag_socket pig=12755 comm=syz-executor4 netlink: 4 bytes leftover after parsing attributes in process `syz-executor5'. kauditd_printk_skb: 147 callbacks suppressed audit: type=1326 audit(1511629107.229:899): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=kernel pid=12905 comm="syz-executor0" exe="/root/syz-executor0" sig=0 arch=c000003e syscall=202 compat=0 ip=0x452879 code=0x7ffc0000 audit: type=1326 audit(1511629107.264:900): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=kernel pid=12905 comm="syz-executor0" exe="/root/syz-executor0" sig=0 arch=c000003e syscall=9 compat=0 ip=0x452879 code=0x7ffc0000 audit: type=1326 audit(1511629107.269:901): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=kernel pid=12905 comm="syz-executor0" exe="/root/syz-executor0" sig=0 arch=c000003e syscall=202 compat=0 ip=0x452879 code=0x7ffc0000 audit: type=1326 audit(1511629107.269:902): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=kernel pid=12905 comm="syz-executor0" exe="/root/syz-executor0" sig=0 arch=c000003e syscall=202 compat=0 ip=0x452879 code=0x7ffc0000 audit: type=1326 audit(1511629107.295:903): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=kernel pid=12905 comm="syz-executor0" exe="/root/syz-executor0" sig=0 arch=c000003e syscall=41 compat=0 ip=0x452879 code=0x7ffc0000 audit: type=1326 audit(1511629107.295:904): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=kernel pid=12905 comm="syz-executor0" exe="/root/syz-executor0" sig=0 arch=c000003e syscall=202 compat=0 ip=0x452879 code=0x7ffc0000 audit: type=1326 audit(1511629107.295:905): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=kernel pid=12905 comm="syz-executor0" exe="/root/syz-executor0" sig=0 arch=c000003e syscall=202 compat=0 ip=0x452879 code=0x7ffc0000 audit: type=1326 audit(1511629107.297:906): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=kernel pid=12905 comm="syz-executor0" exe="/root/syz-executor0" sig=0 arch=c000003e syscall=9 compat=0 ip=0x452879 code=0x7ffc0000 audit: type=1326 audit(1511629107.298:907): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=kernel pid=12905 comm="syz-executor0" exe="/root/syz-executor0" sig=0 arch=c000003e syscall=202 compat=0 ip=0x452879 code=0x7ffc0000 audit: type=1326 audit(1511629107.298:908): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=kernel pid=12905 comm="syz-executor0" exe="/root/syz-executor0" sig=0 arch=c000003e syscall=202 compat=0 ip=0x452879 code=0x7ffc0000 tty_warn_deprecated_flags: 'syz-executor7' is using deprecated serial flags (with no effect): 00008000 tty_warn_deprecated_flags: 'syz-executor7' is using deprecated serial flags (with no effect): 00008000 Option ' Option ' SELinux: unrecognized netlink message: protocol=0 nlmsg_type=0 sclass=netlink_route_socket pig=13094 comm=syz-executor4 sctp: [Deprecated]: syz-executor5 (pid 13131) Use of struct sctp_assoc_value in delayed_ack socket option. Use struct sctp_sack_info instead sctp: [Deprecated]: syz-executor5 (pid 13131) Use of struct sctp_assoc_value in delayed_ack socket option. Use struct sctp_sack_info instead device syz2 entered promiscuous mode device syz2 left promiscuous mode sctp: [Deprecated]: syz-executor4 (pid 13200) Use of int in maxseg socket option. Use struct sctp_assoc_value instead sctp: [Deprecated]: syz-executor4 (pid 13200) Use of int in maxseg socket option. Use struct sctp_assoc_value instead dccp_invalid_packet: P.CsCov 15 exceeds packet length 1020 QAT: Invalid ioctl QAT: Invalid ioctl QAT: Invalid ioctl dccp_invalid_packet: P.CsCov 15 exceeds packet length 1020 QAT: Invalid ioctl QAT: Invalid ioctl QAT: Invalid ioctl sock: sock_set_timeout: `syz-executor3' (pid 13355) tries to set negative timeout sctp: [Deprecated]: syz-executor3 (pid 13372) Use of int in maxseg socket option. Use struct sctp_assoc_value instead pit: kvm: requested 4190 ns i8254 timer period limited to 500000 ns sock: sock_set_timeout: `syz-executor3' (pid 13372) tries to set negative timeout sctp: [Deprecated]: syz-executor3 (pid 13372) Use of int in maxseg socket option. Use struct sctp_assoc_value instead pit: kvm: requested 4190 ns i8254 timer period limited to 500000 ns netlink: 15 bytes leftover after parsing attributes in process `syz-executor7'. netlink: 8 bytes leftover after parsing attributes in process `syz-executor7'. netlink: 1 bytes leftover after parsing attributes in process `syz-executor5'. netlink: 15 bytes leftover after parsing attributes in process `syz-executor7'. netlink: 1 bytes leftover after parsing attributes in process `syz-executor5'. rfkill: input handler disabled rfkill: input handler enabled netlink: 1 bytes leftover after parsing attributes in process `syz-executor3'. netlink: 1 bytes leftover after parsing attributes in process `syz-executor3'. netlink: 16 bytes leftover after parsing attributes in process `syz-executor0'. QAT: Invalid ioctl QAT: Invalid ioctl FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 1 CPU: 0 PID: 13741 Comm: syz-executor1 Not tainted 4.14.0+ #193 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:421 [inline] slab_alloc mm/slab.c:3371 [inline] kmem_cache_alloc+0x47/0x760 mm/slab.c:3545 dst_alloc+0x11f/0x1a0 net/core/dst.c:107 rt_dst_alloc+0xe9/0x540 net/ipv4/route.c:1500 __mkroute_output net/ipv4/route.c:2242 [inline] ip_route_output_key_hash_rcu+0xa40/0x2c20 net/ipv4/route.c:2470 ip_route_output_key_hash+0x20b/0x370 net/ipv4/route.c:2299 __ip_route_output_key include/net/route.h:125 [inline] ip_route_connect include/net/route.h:300 [inline] dccp_v4_connect+0xdd8/0x1750 net/dccp/ipv4.c:75 __inet_stream_connect+0x2d4/0xf00 net/ipv4/af_inet.c:619 inet_stream_connect+0x58/0xa0 net/ipv4/af_inet.c:683 SYSC_connect+0x20a/0x480 net/socket.c:1641 SyS_connect+0x24/0x30 net/socket.c:1622 entry_SYSCALL_64_fastpath+0x1f/0x96 RIP: 0033:0x452879 RSP: 002b:00007f0871155be8 EFLAGS: 00000212 ORIG_RAX: 000000000000002a RAX: ffffffffffffffda RBX: 0000000000758020 RCX: 0000000000452879 RDX: 0000000000000010 RSI: 0000000020da8000 RDI: 0000000000000013 RBP: 00007f0871155a20 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000212 R12: 00000000004b757e R13: 00007f0871155b58 R14: 00000000004b758e R15: 0000000000000000 FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 CPU: 1 PID: 13745 Comm: syz-executor1 Not tainted 4.14.0+ #193 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:421 [inline] slab_alloc mm/slab.c:3371 [inline] kmem_cache_alloc+0x47/0x760 mm/slab.c:3545 inet_bind_bucket_create+0x7a/0x350 net/ipv4/inet_hashtables.c:69 __inet_hash_connect+0x666/0xea0 net/ipv4/inet_hashtables.c:608 inet_hash_connect+0x6a/0x140 net/ipv4/inet_hashtables.c:656 dccp_v4_connect+0xac5/0x1750 net/dccp/ipv4.c:106 __inet_stream_connect+0x2d4/0xf00 net/ipv4/af_inet.c:619 inet_stream_connect+0x58/0xa0 net/ipv4/af_inet.c:683 SYSC_connect+0x20a/0x480 net/socket.c:1641 SyS_connect+0x24/0x30 net/socket.c:1622 entry_SYSCALL_64_fastpath+0x1f/0x96 RIP: 0033:0x452879 RSP: 002b:00007f0871155be8 EFLAGS: 00000212 ORIG_RAX: 000000000000002a RAX: ffffffffffffffda RBX: 0000000000758020 RCX: 0000000000452879 RDX: 0000000000000010 RSI: 0000000020da8000 RDI: 0000000000000013 RBP: 00007f0871155a20 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000212 R12: 00000000004b757e R13: 00007f0871155b58 R14: 00000000004b758e R15: 0000000000000000 FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 CPU: 1 PID: 13747 Comm: syz-executor1 Not tainted 4.14.0+ #193 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:421 [inline] slab_alloc_node mm/slab.c:3292 [inline] kmem_cache_alloc_node+0x56/0x760 mm/slab.c:3635 __alloc_skb+0xf1/0x780 net/core/skbuff.c:193 alloc_skb include/linux/skbuff.h:983 [inline] dccp_connect+0x260/0x670 net/dccp/output.c:555 dccp_v4_connect+0xc95/0x1750 net/dccp/ipv4.c:126 __inet_stream_connect+0x2d4/0xf00 net/ipv4/af_inet.c:619 inet_stream_connect+0x58/0xa0 net/ipv4/af_inet.c:683 SYSC_connect+0x20a/0x480 net/socket.c:1641 SyS_connect+0x24/0x30 net/socket.c:1622 entry_SYSCALL_64_fastpath+0x1f/0x96 RIP: 0033:0x452879 RSP: 002b:00007f0871155be8 EFLAGS: 00000212 ORIG_RAX: 000000000000002a RAX: ffffffffffffffda RBX: 0000000000758020 RCX: 0000000000452879 RDX: 0000000000000010 RSI: 0000000020da8000 RDI: 0000000000000013 RBP: 00007f0871155a20 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000212 R12: 00000000004b757e R13: 00007f0871155b58 R14: 00000000004b758e R15: 0000000000000000 FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 CPU: 0 PID: 13751 Comm: syz-executor1 Not tainted 4.14.0+ #193 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:421 [inline] slab_alloc_node mm/slab.c:3292 [inline] kmem_cache_alloc_node_trace+0x5a/0x760 mm/slab.c:3654 __do_kmalloc_node mm/slab.c:3674 [inline] __kmalloc_node_track_caller+0x33/0x70 mm/slab.c:3689 __kmalloc_reserve.isra.41+0x41/0xd0 net/core/skbuff.c:137 __alloc_skb+0x13b/0x780 net/core/skbuff.c:205 alloc_skb include/linux/skbuff.h:983 [inline] dccp_connect+0x260/0x670 net/dccp/output.c:555 dccp_v4_connect+0xc95/0x1750 net/dccp/ipv4.c:126 __inet_stream_connect+0x2d4/0xf00 net/ipv4/af_inet.c:619 inet_stream_connect+0x58/0xa0 net/ipv4/af_inet.c:683 SYSC_connect+0x20a/0x480 net/socket.c:1641 SyS_connect+0x24/0x30 net/socket.c:1622 entry_SYSCALL_64_fastpath+0x1f/0x96 RIP: 0033:0x452879 RSP: 002b:00007f0871155be8 EFLAGS: 00000212 ORIG_RAX: 000000000000002a RAX: ffffffffffffffda RBX: 0000000000758020 RCX: 0000000000452879 RDX: 0000000000000010 RSI: 0000000020da8000 RDI: 0000000000000013 RBP: 00007f0871155a20 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000212 R12: 00000000004b757e R13: 00007f0871155b58 R14: 00000000004b758e R15: 0000000000000000 device gre0 entered promiscuous mode FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 CPU: 0 PID: 13763 Comm: syz-executor1 Not tainted 4.14.0+ #193 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:421 [inline] slab_alloc mm/slab.c:3371 [inline] kmem_cache_alloc+0x47/0x760 mm/slab.c:3545 skb_clone+0x1ae/0x480 net/core/skbuff.c:1278 dccp_skb_entail+0x96/0xc0 net/dccp/output.c:37 dccp_connect+0x35e/0x670 net/dccp/output.c:564 dccp_v4_connect+0xc95/0x1750 net/dccp/ipv4.c:126 __inet_stream_connect+0x2d4/0xf00 net/ipv4/af_inet.c:619 inet_stream_connect+0x58/0xa0 net/ipv4/af_inet.c:683 SYSC_connect+0x20a/0x480 net/socket.c:1641 SyS_connect+0x24/0x30 net/socket.c:1622 entry_SYSCALL_64_fastpath+0x1f/0x96 RIP: 0033:0x452879 RSP: 002b:00007f0871155be8 EFLAGS: 00000212 ORIG_RAX: 000000000000002a RAX: ffffffffffffffda RBX: 0000000000758020 RCX: 0000000000452879 RDX: 0000000000000010 RSI: 0000000020da8000 RDI: 0000000000000013 RBP: 00007f0871155a20 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000212 R12: 00000000004b757e R13: 00007f0871155b58 R14: 00000000004b758e R15: 0000000000000000 device gre0 entered promiscuous mode QAT: Invalid ioctl QAT: Invalid ioctl sctp: [Deprecated]: syz-executor7 (pid 13860) Use of int in max_burst socket option. Use struct sctp_assoc_value instead nla_parse: 3 callbacks suppressed netlink: 14 bytes leftover after parsing attributes in process `syz-executor4'. sctp: [Deprecated]: syz-executor7 (pid 13872) Use of int in max_burst socket option. Use struct sctp_assoc_value instead netlink: 14 bytes leftover after parsing attributes in process `syz-executor4'. device lo entered promiscuous mode sctp: [Deprecated]: syz-executor0 (pid 13983) Use of int in maxseg socket option. Use struct sctp_assoc_value instead kauditd_printk_skb: 220 callbacks suppressed audit: type=1326 audit(1511629113.426:1129): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=kernel pid=14055 comm="" exe="/root/syz-executor5" sig=0 arch=c000003e syscall=202 compat=0 ip=0x452879 code=0x7ffc0000 netlink: 4 bytes leftover after parsing attributes in process `syz-executor6'. audit: type=1326 audit(1511629113.452:1130): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=kernel pid=14055 comm="" exe="/root/syz-executor5" sig=0 arch=c000003e syscall=202 compat=0 ip=0x452879 code=0x7ffc0000 audit: type=1326 audit(1511629113.453:1131): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=kernel pid=14055 comm="syz-executor5" exe="/root/syz-executor5" sig=0 arch=c000003e syscall=202 compat=0 ip=0x452879 code=0x7ffc0000 audit: type=1326 audit(1511629113.453:1132): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=kernel pid=14055 comm="syz-executor5" exe="/root/syz-executor5" sig=0 arch=c000003e syscall=228 compat=0 ip=0x45561a code=0x7ffc0000 audit: type=1326 audit(1511629113.453:1133): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=kernel pid=14055 comm="syz-executor5" exe="/root/syz-executor5" sig=0 arch=c000003e syscall=202 compat=0 ip=0x452879 code=0x7ffc0000 audit: type=1326 audit(1511629113.453:1134): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=kernel pid=14055 comm="" exe="/root/syz-executor5" sig=0 arch=c000003e syscall=53 compat=0 ip=0x452879 code=0x7ffc0000 audit: type=1326 audit(1511629113.461:1135): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=kernel pid=14055 comm="" exe="/root/syz-executor5" sig=0 arch=c000003e syscall=202 compat=0 ip=0x452879 code=0x7ffc0000 audit: type=1326 audit(1511629113.461:1136): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=kernel pid=14055 comm="" exe="/root/syz-executor5" sig=0 arch=c000003e syscall=202 compat=0 ip=0x452879 code=0x7ffc0000 audit: type=1326 audit(1511629113.461:1137): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=kernel pid=14055 comm="syz-executor5" exe="/root/syz-executor5" sig=0 arch=c000003e syscall=202 compat=0 ip=0x452879 code=0x7ffc0000 audit: type=1326 audit(1511629113.461:1138): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=kernel pid=14055 comm="syz-executor5" exe="/root/syz-executor5" sig=0 arch=c000003e syscall=228 compat=0 ip=0x45561a code=0x7ffc0000 netlink: 4 bytes leftover after parsing attributes in process `syz-executor6'. RDS: rds_bind could not find a transport for 172.20.0.170, load rds_tcp or rds_rdma? 9pnet_virtio: no channels available for device ./file0