sctp: failed to load transform for md5: -2 device lo entered promiscuous mode device lo left promiscuous mode ====================================================== WARNING: possible circular locking dependency detected 4.13.0-rc6-next-20170823+ #7 Not tainted ------------------------------------------------------ kworker/1:2/1335 is trying to acquire lock: (rcu_sched_state.barrier_mutex){+.+.}, at: [] _rcu_barrier+0x13f/0x7a0 kernel/rcu/tree.c:3502 but task is already holding lock: ((&map->work)){+.+.}, at: [] process_one_work+0xb2c/0x1be0 kernel/workqueue.c:2094 which lock already depends on the new lock. the existing dependency chain (in reverse order) is: -> #3 ((&map->work)){+.+.}: process_one_work+0xba5/0x1be0 kernel/workqueue.c:2095 worker_thread+0x223/0x1860 kernel/workqueue.c:2233 kthread+0x39c/0x470 kernel/kthread.c:231 ret_from_fork+0x2a/0x40 arch/x86/entry/entry_64.S:431 0xffffffffffffffff -> #2 ((complete)&rcu.completion){+.+.}: check_prevs_add kernel/locking/lockdep.c:2020 [inline] validate_chain kernel/locking/lockdep.c:2469 [inline] __lock_acquire+0x3286/0x4620 kernel/locking/lockdep.c:3498 lock_acquire+0x1d5/0x580 kernel/locking/lockdep.c:4002 complete_acquire include/linux/completion.h:39 [inline] __wait_for_common kernel/sched/completion.c:108 [inline] wait_for_common kernel/sched/completion.c:122 [inline] wait_for_completion+0xc8/0x770 kernel/sched/completion.c:143 __synchronize_srcu+0x1b5/0x250 kernel/rcu/srcutree.c:898 synchronize_srcu_expedited kernel/rcu/srcutree.c:923 [inline] synchronize_srcu+0x1a3/0x560 kernel/rcu/srcutree.c:974 quarantine_remove_cache+0xd7/0xf0 mm/kasan/quarantine.c:327 kasan_cache_shrink+0x9/0x10 mm/kasan/kasan.c:380 kmem_cache_shrink+0x15/0x30 mm/slab_common.c:857 acpi_os_purge_cache+0x15/0x20 drivers/acpi/osl.c:1560 acpi_purge_cached_objects+0x38/0xc9 drivers/acpi/acpica/utxface.c:271 acpi_initialize_objects+0xc5/0x112 drivers/acpi/acpica/utxfinit.c:302 acpi_bus_init drivers/acpi/bus.c:1131 [inline] acpi_init+0x23c/0x8e6 drivers/acpi/bus.c:1220 do_one_initcall+0x9e/0x330 init/main.c:825 do_initcall_level init/main.c:891 [inline] do_initcalls init/main.c:899 [inline] do_basic_setup init/main.c:917 [inline] kernel_init_freeable+0x46e/0x526 init/main.c:1067 kernel_init+0x13/0x172 init/main.c:992 ret_from_fork+0x2a/0x40 arch/x86/entry/entry_64.S:431 -> #1 (cpu_hotplug_lock.rw_sem){++++}: check_prevs_add kernel/locking/lockdep.c:2020 [inline] validate_chain kernel/locking/lockdep.c:2469 [inline] __lock_acquire+0x3286/0x4620 kernel/locking/lockdep.c:3498 lock_acquire+0x1d5/0x580 kernel/locking/lockdep.c:4002 percpu_down_read_preempt_disable include/linux/percpu-rwsem.h:35 [inline] percpu_down_read include/linux/percpu-rwsem.h:58 [inline] cpus_read_lock+0x42/0x90 kernel/cpu.c:218 get_online_cpus include/linux/cpu.h:126 [inline] _rcu_barrier+0x33d/0x7a0 kernel/rcu/tree.c:3525 rcu_barrier_sched kernel/rcu/tree.c:3591 [inline] rcu_barrier+0x10/0x20 kernel/rcu/tree_plugin.h:891 l2tp_exit_net+0x373/0x550 net/l2tp/l2tp_core.c:1906 ops_exit_list.isra.6+0xae/0x150 net/core/net_namespace.c:142 cleanup_net+0x5c7/0xb60 net/core/net_namespace.c:483 process_one_work+0xbfd/0x1be0 kernel/workqueue.c:2098 worker_thread+0x223/0x1860 kernel/workqueue.c:2233 kthread+0x39c/0x470 kernel/kthread.c:231 ret_from_fork+0x2a/0x40 arch/x86/entry/entry_64.S:431 -> #0 (rcu_sched_state.barrier_mutex){+.+.}: check_prev_add+0x865/0x1520 kernel/locking/lockdep.c:1894 check_prevs_add kernel/locking/lockdep.c:2020 [inline] validate_chain kernel/locking/lockdep.c:2469 [inline] __lock_acquire+0x3286/0x4620 kernel/locking/lockdep.c:3498 lock_acquire+0x1d5/0x580 kernel/locking/lockdep.c:4002 __mutex_lock_common kernel/locking/mutex.c:756 [inline] __mutex_lock+0x16f/0x1870 kernel/locking/mutex.c:893 mutex_lock_nested+0x16/0x20 kernel/locking/mutex.c:908 _rcu_barrier+0x13f/0x7a0 kernel/rcu/tree.c:3502 rcu_barrier_sched kernel/rcu/tree.c:3591 [inline] rcu_barrier+0x10/0x20 kernel/rcu/tree_plugin.h:891 htab_map_free+0x9d/0x640 kernel/bpf/hashtab.c:1112 bpf_map_free_deferred+0xac/0xd0 kernel/bpf/syscall.c:209 process_one_work+0xbfd/0x1be0 kernel/workqueue.c:2098 worker_thread+0x223/0x1860 kernel/workqueue.c:2233 kthread+0x39c/0x470 kernel/kthread.c:231 ret_from_fork+0x2a/0x40 arch/x86/entry/entry_64.S:431 other info that might help us debug this: Chain exists of: rcu_sched_state.barrier_mutex --> (complete)&rcu.completion --> (&map->work) Possible unsafe locking scenario: CPU0 CPU1 ---- ---- lock((&map->work)); lock((complete)&rcu.completion); lock((&map->work)); lock(rcu_sched_state.barrier_mutex); *** DEADLOCK *** 2 locks held by kworker/1:2/1335: #0: ("events"){.+.+}, at: [] __write_once_size include/linux/compiler.h:305 [inline] #0: ("events"){.+.+}, at: [] atomic64_set arch/x86/include/asm/atomic64_64.h:33 [inline] #0: ("events"){.+.+}, at: [] atomic_long_set include/asm-generic/atomic-long.h:56 [inline] #0: ("events"){.+.+}, at: [] set_work_data kernel/workqueue.c:617 [inline] #0: ("events"){.+.+}, at: [] set_work_pool_and_clear_pending kernel/workqueue.c:644 [inline] #0: ("events"){.+.+}, at: [] process_one_work+0xad4/0x1be0 kernel/workqueue.c:2090 #1: ((&map->work)){+.+.}, at: [] process_one_work+0xb2c/0x1be0 kernel/workqueue.c:2094 stack backtrace: CPU: 1 PID: 1335 Comm: kworker/1:2 Not tainted 4.13.0-rc6-next-20170823+ #7 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Workqueue: events bpf_map_free_deferred Call Trace: __dump_stack lib/dump_stack.c:16 [inline] dump_stack+0x194/0x257 lib/dump_stack.c:52 print_circular_bug+0x503/0x710 kernel/locking/lockdep.c:1259 check_prev_add+0x865/0x1520 kernel/locking/lockdep.c:1894 check_prevs_add kernel/locking/lockdep.c:2020 [inline] validate_chain kernel/locking/lockdep.c:2469 [inline] __lock_acquire+0x3286/0x4620 kernel/locking/lockdep.c:3498 lock_acquire+0x1d5/0x580 kernel/locking/lockdep.c:4002 __mutex_lock_common kernel/locking/mutex.c:756 [inline] __mutex_lock+0x16f/0x1870 kernel/locking/mutex.c:893 mutex_lock_nested+0x16/0x20 kernel/locking/mutex.c:908 _rcu_barrier+0x13f/0x7a0 kernel/rcu/tree.c:3502 rcu_barrier_sched kernel/rcu/tree.c:3591 [inline] rcu_barrier+0x10/0x20 kernel/rcu/tree_plugin.h:891 htab_map_free+0x9d/0x640 kernel/bpf/hashtab.c:1112 bpf_map_free_deferred+0xac/0xd0 kernel/bpf/syscall.c:209 process_one_work+0xbfd/0x1be0 kernel/workqueue.c:2098 worker_thread+0x223/0x1860 kernel/workqueue.c:2233 kthread+0x39c/0x470 kernel/kthread.c:231 ret_from_fork+0x2a/0x40 arch/x86/entry/entry_64.S:431 device lo entered promiscuous mode device lo left promiscuous mode SELinux: unrecognized netlink message: protocol=9 nlmsg_type=0 sclass=netlink_audit_socket pig=3669 comm=syz-executor1 capability: warning: `syz-executor1' uses deprecated v2 capabilities in a way that may be insecure device lo entered promiscuous mode nla_parse: 1 callbacks suppressed netlink: 3 bytes leftover after parsing attributes in process `syz-executor1'. audit: type=1326 audit(1503488311.113:3): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=kernel pid=3850 comm="syz-executor1" exe="/root/syz-executor1" sig=31 arch=c000003e syscall=202 compat=0 ip=0x4512e9 code=0xffff0000 sg_write: data in/out 1473841115/4058 bytes for SCSI command 0x33-- guessing data in; program syz-executor2 not setting count and/or reply_len properly sg_write: data in/out 1473841115/4058 bytes for SCSI command 0x33-- guessing data in; program syz-executor2 not setting count and/or reply_len properly netlink: 13 bytes leftover after parsing attributes in process `syz-executor2'. !: renamed from syz2 netlink: 13 bytes leftover after parsing attributes in process `syz-executor2'. netlink: 13 bytes leftover after parsing attributes in process `syz-executor2'. FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 1 FAULT_FLAG_ALLOW_RETRY missing 30 CPU: 1 PID: 5146 Comm: syz-executor4 Not tainted 4.13.0-rc6-next-20170823+ #7 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:16 [inline] dump_stack+0x194/0x257 lib/dump_stack.c:52 handle_userfault+0x11ec/0x2380 fs/userfaultfd.c:409 do_anonymous_page mm/memory.c:3095 [inline] handle_pte_fault mm/memory.c:3908 [inline] __handle_mm_fault+0x2e10/0x39e0 mm/memory.c:4035 handle_mm_fault+0x3bb/0x860 mm/memory.c:4072 __do_page_fault+0x4f6/0xb60 arch/x86/mm/fault.c:1445 do_page_fault+0x54/0x70 arch/x86/mm/fault.c:1508 page_fault+0x22/0x30 arch/x86/entry/entry_64.S:1090 RIP: 0010:fault_in_pages_readable include/linux/pagemap.h:596 [inline] RIP: 0010:iov_iter_fault_in_readable+0x1a7/0x410 lib/iov_iter.c:421 RSP: 0018:ffff8801d02c7930 EFLAGS: 00010246 RAX: 0000000000010000 RBX: 0000000020012000 RCX: ffffc9000406e000 RDX: 00000000000000c0 RSI: ffffffff823a7091 RDI: ffff8801d02c7d28 RBP: ffff8801d02c7a10 R08: 1ffff10038dfd4a2 R09: 1ffff1003a058f1a R10: ffff8801cf4a65c0 R11: ffff8801cf4a65c0 R12: 1ffff1003a058f29 R13: ffff8801d02c79e8 R14: 0000000000000000 R15: ffff8801d02c7d20 generic_perform_write+0x1fd/0x650 mm/filemap.c:2969 __generic_file_write_iter+0x366/0x5b0 mm/filemap.c:3104 generic_file_write_iter+0x399/0x7a0 mm/filemap.c:3132 call_write_iter include/linux/fs.h:1743 [inline] new_sync_write fs/read_write.c:457 [inline] __vfs_write+0x68a/0x970 fs/read_write.c:470 vfs_write+0x18f/0x510 fs/read_write.c:518 SYSC_write fs/read_write.c:565 [inline] SyS_write+0xef/0x220 fs/read_write.c:557 entry_SYSCALL_64_fastpath+0x1f/0xbe RIP: 0033:0x4512e9 RSP: 002b:00007ff00cd3fc08 EFLAGS: 00000216 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 0000000000718000 RCX: 00000000004512e9 RDX: 0000000000000008 RSI: 0000000020012000 RDI: 0000000000000006 RBP: 0000000000718000 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000216 R12: 0000000000000000 R13: 0000000000a6f7ef R14: 00007ff00cd409c0 R15: 0000000000000000 FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 1 CPU: 1 PID: 5252 Comm: syz-executor6 Not tainted 4.13.0-rc6-next-20170823+ #7 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:16 [inline] dump_stack+0x194/0x257 lib/dump_stack.c:52 fail_dump lib/fault-inject.c:51 [inline] should_fail+0x8c0/0xa40 lib/fault-inject.c:149 should_failslab+0xec/0x120 mm/failslab.c:31 slab_pre_alloc_hook mm/slab.h:422 [inline] slab_alloc_node mm/slab.c:3304 [inline] kmem_cache_alloc_node+0x56/0x760 mm/slab.c:3649 alloc_task_struct_node kernel/fork.c:156 [inline] dup_task_struct kernel/fork.c:517 [inline] copy_process.part.35+0x1a6a/0x4af0 kernel/fork.c:1564 copy_process kernel/fork.c:1539 [inline] _do_fork+0x1ef/0xfe0 kernel/fork.c:2018 SYSC_clone kernel/fork.c:2128 [inline] SyS_clone+0x37/0x50 kernel/fork.c:2122 do_syscall_64+0x26c/0x8c0 arch/x86/entry/common.c:287 entry_SYSCALL64_slow_path+0x25/0x25 RIP: 0033:0x4512e9 RSP: 002b:00007f0730b79c08 EFLAGS: 00000216 ORIG_RAX: 0000000000000038 RAX: ffffffffffffffda RBX: 0000000000718000 RCX: 00000000004512e9 RDX: 0000000020000000 RSI: 0000000020000000 RDI: 000000004804a7fd RBP: 00000000000003b0 R08: 0000000020450000 R09: 0000000000000000 R10: 0000000020663000 R11: 0000000000000216 R12: 00000000004b65e0 R13: 0000000000000006 R14: 000000004804a7fd R15: 0000000020000000 FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 CPU: 1 PID: 5260 Comm: syz-executor6 Not tainted 4.13.0-rc6-next-20170823+ #7 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:16 [inline] dump_stack+0x194/0x257 lib/dump_stack.c:52 fail_dump lib/fault-inject.c:51 [inline] should_fail+0x8c0/0xa40 lib/fault-inject.c:149 should_failslab+0xec/0x120 mm/failslab.c:31 slab_pre_alloc_hook mm/slab.h:422 [inline] slab_alloc mm/slab.c:3383 [inline] kmem_cache_alloc+0x47/0x760 mm/slab.c:3559 prepare_creds+0x78/0x360 kernel/cred.c:252 copy_creds+0x7b/0x3a0 kernel/cred.c:344 copy_process.part.35+0xb28/0x4af0 kernel/fork.c:1597 copy_process kernel/fork.c:1539 [inline] _do_fork+0x1ef/0xfe0 kernel/fork.c:2018 SYSC_clone kernel/fork.c:2128 [inline] SyS_clone+0x37/0x50 kernel/fork.c:2122 do_syscall_64+0x26c/0x8c0 arch/x86/entry/common.c:287 entry_SYSCALL64_slow_path+0x25/0x25 RIP: 0033:0x4512e9 RSP: 002b:00007f0730b79c08 EFLAGS: 00000216 ORIG_RAX: 0000000000000038 RAX: ffffffffffffffda RBX: 0000000000718000 RCX: 00000000004512e9 RDX: 0000000020000000 RSI: 0000000020000000 RDI: 000000004804a7fd RBP: 00000000000003b0 R08: 0000000020450000 R09: 0000000000000000 R10: 0000000020663000 R11: 0000000000000216 R12: 00000000004b65e0 R13: 0000000000000006 R14: 000000004804a7fd R15: 0000000020000000 FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 CPU: 1 PID: 5277 Comm: syz-executor6 Not tainted 4.13.0-rc6-next-20170823+ #7 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:16 [inline] dump_stack+0x194/0x257 lib/dump_stack.c:52 fail_dump lib/fault-inject.c:51 [inline] should_fail+0x8c0/0xa40 lib/fault-inject.c:149 should_failslab+0xec/0x120 mm/failslab.c:31 slab_pre_alloc_hook mm/slab.h:422 [inline] slab_alloc mm/slab.c:3383 [inline] __do_kmalloc mm/slab.c:3723 [inline] __kmalloc_track_caller+0x5f/0x760 mm/slab.c:3740 kmemdup+0x24/0x50 mm/util.c:118 kmemdup include/linux/string.h:412 [inline] selinux_cred_prepare+0x43/0xa0 security/selinux/hooks.c:3820 security_prepare_creds+0x7d/0xb0 security/security.c:999 prepare_creds+0x2b1/0x360 kernel/cred.c:278 copy_creds+0x7b/0x3a0 kernel/cred.c:344 copy_process.part.35+0xb28/0x4af0 kernel/fork.c:1597 copy_process kernel/fork.c:1539 [inline] _do_fork+0x1ef/0xfe0 kernel/fork.c:2018 SYSC_clone kernel/fork.c:2128 [inline] SyS_clone+0x37/0x50 kernel/fork.c:2122 do_syscall_64+0x26c/0x8c0 arch/x86/entry/common.c:287 entry_SYSCALL64_slow_path+0x25/0x25 RIP: 0033:0x4512e9 RSP: 002b:00007f0730b79c08 EFLAGS: 00000216 ORIG_RAX: 0000000000000038 RAX: ffffffffffffffda RBX: 0000000000718000 RCX: 00000000004512e9 RDX: 0000000020000000 RSI: 0000000020000000 RDI: 000000004804a7fd RBP: 00000000000003b0 R08: 0000000020450000 R09: 0000000000000000 R10: 0000000020663000 R11: 0000000000000216 R12: 00000000004b65e0 R13: 0000000000000006 R14: 000000004804a7fd R15: 0000000020000000 CPU: 1 PID: 5204 Comm: syz-executor1 Not tainted 4.13.0-rc6-next-20170823+ #7 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:16 [inline] dump_stack+0x194/0x257 lib/dump_stack.c:52 fail_dump lib/fault-inject.c:51 [inline] should_fail+0x8c0/0xa40 lib/fault-inject.c:149 should_failslab+0xec/0x120 mm/failslab.c:31 slab_pre_alloc_hook mm/slab.h:422 [inline] slab_alloc_node mm/slab.c:3304 [inline] kmem_cache_alloc_node+0x56/0x760 mm/slab.c:3649 alloc_task_struct_node kernel/fork.c:156 [inline] dup_task_struct kernel/fork.c:517 [inline] copy_process.part.35+0x1a6a/0x4af0 kernel/fork.c:1564 copy_process kernel/fork.c:1539 [inline] _do_fork+0x1ef/0xfe0 kernel/fork.c:2018 SYSC_clone kernel/fork.c:2128 [inline] SyS_clone+0x37/0x50 kernel/fork.c:2122 do_syscall_64+0x26c/0x8c0 arch/x86/entry/common.c:287 entry_SYSCALL64_slow_path+0x25/0x25 RIP: 0033:0x4512e9 RSP: 002b:00007f02fe45ec08 EFLAGS: 00000216 ORIG_RAX: 0000000000000038 RAX: ffffffffffffffda RBX: 0000000000718000 RCX: 00000000004512e9 RDX: 0000000020000000 RSI: 0000000020000000 RDI: 000000004804a7fd RBP: 00000000000003b0 R08: 0000000020450000 R09: 0000000000000000 R10: 0000000020663000 R11: 0000000000000216 R12: 00000000004b65e0 R13: 0000000000000006 R14: 000000004804a7fd R15: 0000000020000000 FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 CPU: 0 PID: 5307 Comm: syz-executor6 Not tainted 4.13.0-rc6-next-20170823+ #7 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:16 [inline] dump_stack+0x194/0x257 lib/dump_stack.c:52 fail_dump lib/fault-inject.c:51 [inline] should_fail+0x8c0/0xa40 lib/fault-inject.c:149 should_failslab+0xec/0x120 mm/failslab.c:31 slab_pre_alloc_hook mm/slab.h:422 [inline] slab_alloc mm/slab.c:3383 [inline] __do_kmalloc mm/slab.c:3723 [inline] __kmalloc_track_caller+0x5f/0x760 mm/slab.c:3740 kmemdup+0x24/0x50 mm/util.c:118 kmemdup include/linux/string.h:412 [inline] selinux_cred_prepare+0x43/0xa0 security/selinux/hooks.c:3820 security_prepare_creds+0x7d/0xb0 security/security.c:999 prepare_creds+0x2b1/0x360 kernel/cred.c:278 copy_creds+0x7b/0x3a0 kernel/cred.c:344 copy_process.part.35+0xb28/0x4af0 kernel/fork.c:1597 copy_process kernel/fork.c:1539 [inline] _do_fork+0x1ef/0xfe0 kernel/fork.c:2018 SYSC_clone kernel/fork.c:2128 [inline] SyS_clone+0x37/0x50 kernel/fork.c:2122 do_syscall_64+0x26c/0x8c0 arch/x86/entry/common.c:287 entry_SYSCALL64_slow_path+0x25/0x25 RIP: 0033:0x4512e9 RSP: 002b:00007f0730b79c08 EFLAGS: 00000216 ORIG_RAX: 0000000000000038 RAX: ffffffffffffffda RBX: 0000000000718000 RCX: 00000000004512e9 RDX: 0000000020000000 RSI: 0000000020000000 RDI: 000000004804a7fd RBP: 00000000000003b0 R08: 0000000020450000 R09: 0000000000000000 R10: 0000000020663000 R11: 0000000000000216 R12: 00000000004b65e0 R13: 0000000000000006 R14: 000000004804a7fd R15: 0000000020000000 FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 CPU: 0 PID: 5321 Comm: syz-executor6 Not tainted 4.13.0-rc6-next-20170823+ #7 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:16 [inline] dump_stack+0x194/0x257 lib/dump_stack.c:52 fail_dump lib/fault-inject.c:51 [inline] should_fail+0x8c0/0xa40 lib/fault-inject.c:149 should_failslab+0xec/0x120 mm/failslab.c:31 slab_pre_alloc_hook mm/slab.h:422 [inline] slab_alloc mm/slab.c:3383 [inline] kmem_cache_alloc+0x47/0x760 mm/slab.c:3559 __mpol_dup+0x90/0x3f0 mm/mempolicy.c:2067 mpol_dup include/linux/mempolicy.h:90 [inline] copy_process.part.35+0x125c/0x4af0 kernel/fork.c:1650 copy_process kernel/fork.c:1539 [inline] _do_fork+0x1ef/0xfe0 kernel/fork.c:2018 SYSC_clone kernel/fork.c:2128 [inline] SyS_clone+0x37/0x50 kernel/fork.c:2122 do_syscall_64+0x26c/0x8c0 arch/x86/entry/common.c:287 entry_SYSCALL64_slow_path+0x25/0x25 RIP: 0033:0x4512e9 RSP: 002b:00007f0730b79c08 EFLAGS: 00000216 ORIG_RAX: 0000000000000038 RAX: ffffffffffffffda RBX: 0000000000718000 RCX: 00000000004512e9 RDX: 0000000020000000 RSI: 0000000020000000 RDI: 000000004804a7fd RBP: 00000000000003b0 R08: 0000000020450000 R09: 0000000000000000 R10: 0000000020663000 R11: 0000000000000216 R12: 00000000004b65e0 R13: 0000000000000006 R14: 000000004804a7fd R15: 0000000020000000 FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 CPU: 1 PID: 5361 Comm: syz-executor6 Not tainted 4.13.0-rc6-next-20170823+ #7 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:16 [inline] dump_stack+0x194/0x257 lib/dump_stack.c:52 fail_dump lib/fault-inject.c:51 [inline] should_fail+0x8c0/0xa40 lib/fault-inject.c:149 should_failslab+0xec/0x120 mm/failslab.c:31 slab_pre_alloc_hook mm/slab.h:422 [inline] slab_alloc mm/slab.c:3383 [inline] kmem_cache_alloc+0x47/0x760 mm/slab.c:3559 __mpol_dup+0x90/0x3f0 mm/mempolicy.c:2067 mpol_dup include/linux/mempolicy.h:90 [inline] copy_process.part.35+0x125c/0x4af0 kernel/fork.c:1650 copy_process kernel/fork.c:1539 [inline] _do_fork+0x1ef/0xfe0 kernel/fork.c:2018 SYSC_clone kernel/fork.c:2128 [inline] SyS_clone+0x37/0x50 kernel/fork.c:2122 do_syscall_64+0x26c/0x8c0 arch/x86/entry/common.c:287 entry_SYSCALL64_slow_path+0x25/0x25 RIP: 0033:0x4512e9 RSP: 002b:00007f0730b79c08 EFLAGS: 00000216 ORIG_RAX: 0000000000000038 RAX: ffffffffffffffda RBX: 0000000000718000 RCX: 00000000004512e9 RDX: 0000000020000000 RSI: 0000000020000000 RDI: 000000004804a7fd RBP: 00000000000003b0 R08: 0000000020450000 R09: 0000000000000000 R10: 0000000020663000 R11: 0000000000000216 R12: 00000000004b65e0 R13: 0000000000000006 R14: 000000004804a7fd R15: 0000000020000000