============================= WARNING: suspicious RCU usage 4.15.0-rc5+ #172 Not tainted ----------------------------- net/ipv6/ip6_fib.c:1702 suspicious rcu_dereference_protected() usage! other info that might help us debug this: rcu_scheduler_active = 2, debug_locks = 1 4 locks held by syz-fuzzer/3465: #0: ((&net->ipv6.ip6_fib_timer)){+.-.}, at: [<0000000099fa010d>] lockdep_copy_map include/linux/lockdep.h:178 [inline] #0: ((&net->ipv6.ip6_fib_timer)){+.-.}, at: [<0000000099fa010d>] call_timer_fn+0x1c6/0x820 kernel/time/timer.c:1310 #1: (&(&net->ipv6.fib6_gc_lock)->rlock){+.-.}, at: [<0000000018f0672a>] spin_lock_bh include/linux/spinlock.h:315 [inline] #1: (&(&net->ipv6.fib6_gc_lock)->rlock){+.-.}, at: [<0000000018f0672a>] fib6_run_gc+0x9d/0x3c0 net/ipv6/ip6_fib.c:2007 #2: (rcu_read_lock){....}, at: [<000000004841da47>] __fib6_clean_all+0x0/0x3a0 net/ipv6/ip6_fib.c:1560 #3: (&(&tb->tb6_lock)->rlock){+.-.}, at: [<00000000d975d501>] spin_lock_bh include/linux/spinlock.h:315 [inline] #3: (&(&tb->tb6_lock)->rlock){+.-.}, at: [<00000000d975d501>] __fib6_clean_all+0x1d0/0x3a0 net/ipv6/ip6_fib.c:1948 stack backtrace: CPU: 0 PID: 3465 Comm: syz-fuzzer Not tainted 4.15.0-rc5+ #172 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:4585 fib6_del+0xcaa/0x11b0 net/ipv6/ip6_fib.c:1701 fib6_clean_node+0x3aa/0x4f0 net/ipv6/ip6_fib.c:1892 fib6_walk_continue+0x46c/0x8a0 net/ipv6/ip6_fib.c:1815 fib6_walk+0x91/0xf0 net/ipv6/ip6_fib.c:1863 fib6_clean_tree+0x1e6/0x340 net/ipv6/ip6_fib.c:1933 __fib6_clean_all+0x1f4/0x3a0 net/ipv6/ip6_fib.c:1949 fib6_clean_all net/ipv6/ip6_fib.c:1960 [inline] fib6_run_gc+0x16b/0x3c0 net/ipv6/ip6_fib.c:2016 fib6_gc_timer_cb+0x20/0x30 net/ipv6/ip6_fib.c:2033 call_timer_fn+0x228/0x820 kernel/time/timer.c:1320 expire_timers kernel/time/timer.c:1357 [inline] __run_timers+0x7ee/0xb70 kernel/time/timer.c:1660 run_timer_softirq+0x4c/0xb0 kernel/time/timer.c:1686 __do_softirq+0x2d7/0xb85 kernel/softirq.c:285 invoke_softirq kernel/softirq.c:365 [inline] irq_exit+0x1cc/0x200 kernel/softirq.c:405 exiting_irq arch/x86/include/asm/apic.h:540 [inline] smp_apic_timer_interrupt+0x16b/0x700 arch/x86/kernel/apic/apic.c:1052 apic_timer_interrupt+0xa9/0xb0 arch/x86/entry/entry_64.S:904 RIP: 0033:0x72f0e7 RSP: 002b:000000c427173178 EFLAGS: 00000202 ORIG_RAX: ffffffffffffff11 RAX: 00000000010e7820 RBX: 0000000000000000 RCX: 00000000010e7820 RDX: 0000000000b210e0 RSI: 028876ff5d078e00 RDI: 00007feffebbcf50 RBP: 000000c427173190 R08: 00000000016ffc20 R09: 0000000000804e00 R10: 0000000000725d60 R11: 00000000ffffffff R12: 000000c4213706c1 R13: 0000000000000001 R14: 000000c4213706d8 R15: 0000000000000002 ============================= WARNING: suspicious RCU usage 4.15.0-rc5+ #172 Not tainted ----------------------------- net/ipv6/ip6_fib.c:1729 suspicious rcu_dereference_protected() usage! other info that might help us debug this: rcu_scheduler_active = 2, debug_locks = 1 4 locks held by syz-fuzzer/3465: #0: ((&net->ipv6.ip6_fib_timer)){+.-.}, at: [<0000000099fa010d>] lockdep_copy_map include/linux/lockdep.h:178 [inline] #0: ((&net->ipv6.ip6_fib_timer)){+.-.}, at: [<0000000099fa010d>] call_timer_fn+0x1c6/0x820 kernel/time/timer.c:1310 #1: (&(&net->ipv6.fib6_gc_lock)->rlock){+.-.}, at: [<0000000018f0672a>] spin_lock_bh include/linux/spinlock.h:315 [inline] #1: (&(&net->ipv6.fib6_gc_lock)->rlock){+.-.}, at: [<0000000018f0672a>] fib6_run_gc+0x9d/0x3c0 net/ipv6/ip6_fib.c:2007 #2: (rcu_read_lock){....}, at: [<000000004841da47>] __fib6_clean_all+0x0/0x3a0 net/ipv6/ip6_fib.c:1560 #3: (&(&tb->tb6_lock)->rlock){+.-.}, at: [<00000000d975d501>] spin_lock_bh include/linux/spinlock.h:315 [inline] #3: (&(&tb->tb6_lock)->rlock){+.-.}, at: [<00000000d975d501>] __fib6_clean_all+0x1d0/0x3a0 net/ipv6/ip6_fib.c:1948 stack backtrace: CPU: 0 PID: 3465 Comm: syz-fuzzer Not tainted 4.15.0-rc5+ #172 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:4585 fib6_del+0x425/0x11b0 net/ipv6/ip6_fib.c:1728 fib6_clean_node+0x3aa/0x4f0 net/ipv6/ip6_fib.c:1892 fib6_walk_continue+0x46c/0x8a0 net/ipv6/ip6_fib.c:1815 fib6_walk+0x91/0xf0 net/ipv6/ip6_fib.c:1863 fib6_clean_tree+0x1e6/0x340 net/ipv6/ip6_fib.c:1933 __fib6_clean_all+0x1f4/0x3a0 net/ipv6/ip6_fib.c:1949 fib6_clean_all net/ipv6/ip6_fib.c:1960 [inline] fib6_run_gc+0x16b/0x3c0 net/ipv6/ip6_fib.c:2016 fib6_gc_timer_cb+0x20/0x30 net/ipv6/ip6_fib.c:2033 call_timer_fn+0x228/0x820 kernel/time/timer.c:1320 expire_timers kernel/time/timer.c:1357 [inline] __run_timers+0x7ee/0xb70 kernel/time/timer.c:1660 run_timer_softirq+0x4c/0xb0 kernel/time/timer.c:1686 __do_softirq+0x2d7/0xb85 kernel/softirq.c:285 invoke_softirq kernel/softirq.c:365 [inline] irq_exit+0x1cc/0x200 kernel/softirq.c:405 exiting_irq arch/x86/include/asm/apic.h:540 [inline] smp_apic_timer_interrupt+0x16b/0x700 arch/x86/kernel/apic/apic.c:1052 apic_timer_interrupt+0xa9/0xb0 arch/x86/entry/entry_64.S:904 RIP: 0033:0x72f0e7 RSP: 002b:000000c427173178 EFLAGS: 00000202 ORIG_RAX: ffffffffffffff11 RAX: 00000000010e7820 RBX: 0000000000000000 RCX: 00000000010e7820 RDX: 0000000000b210e0 RSI: 028876ff5d078e00 RDI: 00007feffebbcf50 RBP: 000000c427173190 R08: 00000000016ffc20 R09: 0000000000804e00 R10: 0000000000725d60 R11: 00000000ffffffff R12: 000000c4213706c1 R13: 0000000000000001 R14: 000000c4213706d8 R15: 0000000000000002 ============================= WARNING: suspicious RCU usage 4.15.0-rc5+ #172 Not tainted ----------------------------- net/ipv6/ip6_fib.c:1639 suspicious rcu_dereference_protected() usage! other info that might help us debug this: rcu_scheduler_active = 2, debug_locks = 1 4 locks held by syz-fuzzer/3465: #0: ((&net->ipv6.ip6_fib_timer)){+.-.}, at: [<0000000099fa010d>] lockdep_copy_map include/linux/lockdep.h:178 [inline] #0: ((&net->ipv6.ip6_fib_timer)){+.-.}, at: [<0000000099fa010d>] call_timer_fn+0x1c6/0x820 kernel/time/timer.c:1310 #1: (&(&net->ipv6.fib6_gc_lock)->rlock){+.-.}, at: [<0000000018f0672a>] spin_lock_bh include/linux/spinlock.h:315 [inline] #1: (&(&net->ipv6.fib6_gc_lock)->rlock){+.-.}, at: [<0000000018f0672a>] fib6_run_gc+0x9d/0x3c0 net/ipv6/ip6_fib.c:2007 #2: (rcu_read_lock){....}, at: [<000000004841da47>] __fib6_clean_all+0x0/0x3a0 net/ipv6/ip6_fib.c:1560 #3: (&(&tb->tb6_lock)->rlock){+.-.}, at: [<00000000d975d501>] spin_lock_bh include/linux/spinlock.h:315 [inline] #3: (&(&tb->tb6_lock)->rlock){+.-.}, at: [<00000000d975d501>] __fib6_clean_all+0x1d0/0x3a0 net/ipv6/ip6_fib.c:1948 stack backtrace: CPU: 0 PID: 3465 Comm: syz-fuzzer Not tainted 4.15.0-rc5+ #172 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:4585 fib6_del_route net/ipv6/ip6_fib.c:1638 [inline] fib6_del+0xd18/0x11b0 net/ipv6/ip6_fib.c:1731 fib6_clean_node+0x3aa/0x4f0 net/ipv6/ip6_fib.c:1892 fib6_walk_continue+0x46c/0x8a0 net/ipv6/ip6_fib.c:1815 fib6_walk+0x91/0xf0 net/ipv6/ip6_fib.c:1863 fib6_clean_tree+0x1e6/0x340 net/ipv6/ip6_fib.c:1933 __fib6_clean_all+0x1f4/0x3a0 net/ipv6/ip6_fib.c:1949 fib6_clean_all net/ipv6/ip6_fib.c:1960 [inline] fib6_run_gc+0x16b/0x3c0 net/ipv6/ip6_fib.c:2016 fib6_gc_timer_cb+0x20/0x30 net/ipv6/ip6_fib.c:2033 call_timer_fn+0x228/0x820 kernel/time/timer.c:1320 expire_timers kernel/time/timer.c:1357 [inline] __run_timers+0x7ee/0xb70 kernel/time/timer.c:1660 run_timer_softirq+0x4c/0xb0 kernel/time/timer.c:1686 __do_softirq+0x2d7/0xb85 kernel/softirq.c:285 invoke_softirq kernel/softirq.c:365 [inline] irq_exit+0x1cc/0x200 kernel/softirq.c:405 exiting_irq arch/x86/include/asm/apic.h:540 [inline] smp_apic_timer_interrupt+0x16b/0x700 arch/x86/kernel/apic/apic.c:1052 apic_timer_interrupt+0xa9/0xb0 arch/x86/entry/entry_64.S:904 RIP: 0033:0x72f0e7 RSP: 002b:000000c427173178 EFLAGS: 00000202 ORIG_RAX: ffffffffffffff11 RAX: 00000000010e7820 RBX: 0000000000000000 RCX: 00000000010e7820 RDX: 0000000000b210e0 RSI: 028876ff5d078e00 RDI: 00007feffebbcf50 RBP: 000000c427173190 R08: 00000000016ffc20 R09: 0000000000804e00 R10: 0000000000725d60 R11: 00000000ffffffff R12: 000000c4213706c1 R13: 0000000000000001 R14: 000000c4213706d8 R15: 0000000000000002 ============================= WARNING: suspicious RCU usage 4.15.0-rc5+ #172 Not tainted ----------------------------- net/ipv6/ip6_fib.c:1676 suspicious rcu_dereference_protected() usage! other info that might help us debug this: rcu_scheduler_active = 2, debug_locks = 1 5 locks held by syz-fuzzer/3465: #0: ((&net->ipv6.ip6_fib_timer)){+.-.}, at: [<0000000099fa010d>] lockdep_copy_map include/linux/lockdep.h:178 [inline] #0: ((&net->ipv6.ip6_fib_timer)){+.-.}, at: [<0000000099fa010d>] call_timer_fn+0x1c6/0x820 kernel/time/timer.c:1310 #1: (&(&net->ipv6.fib6_gc_lock)->rlock){+.-.}, at: [<0000000018f0672a>] spin_lock_bh include/linux/spinlock.h:315 [inline] #1: (&(&net->ipv6.fib6_gc_lock)->rlock){+.-.}, at: [<0000000018f0672a>] fib6_run_gc+0x9d/0x3c0 net/ipv6/ip6_fib.c:2007 #2: (rcu_read_lock){....}, at: [<000000004841da47>] __fib6_clean_all+0x0/0x3a0 net/ipv6/ip6_fib.c:1560 #3: (&(&tb->tb6_lock)->rlock){+.-.}, at: [<00000000d975d501>] spin_lock_bh include/linux/spinlock.h:315 [inline] #3: (&(&tb->tb6_lock)->rlock){+.-.}, at: [<00000000d975d501>] __fib6_clean_all+0x1d0/0x3a0 net/ipv6/ip6_fib.c:1948 #4: (&net->ipv6.fib6_walker_lock){++--}, at: [<00000000de1b883a>] fib6_del_route net/ipv6/ip6_fib.c:1671 [inline] #4: (&net->ipv6.fib6_walker_lock){++--}, at: [<00000000de1b883a>] fib6_del+0x935/0x11b0 net/ipv6/ip6_fib.c:1731 stack backtrace: CPU: 0 PID: 3465 Comm: syz-fuzzer Not tainted 4.15.0-rc5+ #172 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:4585 fib6_del_route net/ipv6/ip6_fib.c:1675 [inline] fib6_del+0xeb3/0x11b0 net/ipv6/ip6_fib.c:1731 fib6_clean_node+0x3aa/0x4f0 net/ipv6/ip6_fib.c:1892 fib6_walk_continue+0x46c/0x8a0 net/ipv6/ip6_fib.c:1815 fib6_walk+0x91/0xf0 net/ipv6/ip6_fib.c:1863 fib6_clean_tree+0x1e6/0x340 net/ipv6/ip6_fib.c:1933 __fib6_clean_all+0x1f4/0x3a0 net/ipv6/ip6_fib.c:1949 fib6_clean_all net/ipv6/ip6_fib.c:1960 [inline] fib6_run_gc+0x16b/0x3c0 net/ipv6/ip6_fib.c:2016 fib6_gc_timer_cb+0x20/0x30 net/ipv6/ip6_fib.c:2033 call_timer_fn+0x228/0x820 kernel/time/timer.c:1320 expire_timers kernel/time/timer.c:1357 [inline] __run_timers+0x7ee/0xb70 kernel/time/timer.c:1660 run_timer_softirq+0x4c/0xb0 kernel/time/timer.c:1686 __do_softirq+0x2d7/0xb85 kernel/softirq.c:285 invoke_softirq kernel/softirq.c:365 [inline] irq_exit+0x1cc/0x200 kernel/softirq.c:405 exiting_irq arch/x86/include/asm/apic.h:540 [inline] smp_apic_timer_interrupt+0x16b/0x700 arch/x86/kernel/apic/apic.c:1052 apic_timer_interrupt+0xa9/0xb0 arch/x86/entry/entry_64.S:904 RIP: 0033:0x72f0e7 RSP: 002b:000000c427173178 EFLAGS: 00000202 ORIG_RAX: ffffffffffffff11 RAX: 00000000010e7820 RBX: 0000000000000000 RCX: 00000000010e7820 RDX: 0000000000b210e0 RSI: 028876ff5d078e00 RDI: 00007feffebbcf50 RBP: 000000c427173190 R08: 00000000016ffc20 R09: 0000000000804e00 R10: 0000000000725d60 R11: 00000000ffffffff R12: 000000c4213706c1 R13: 0000000000000001 R14: 000000c4213706d8 R15: 0000000000000002 nla_parse: 33 callbacks suppressed netlink: 1 bytes leftover after parsing attributes in process `syz-executor0'. netlink: 1 bytes leftover after parsing attributes in process `syz-executor0'. netlink: 2 bytes leftover after parsing attributes in process `syz-executor2'. netlink: 'syz-executor0': attribute type 1 has an invalid length. netlink: 'syz-executor0': attribute type 1 has an invalid length. ICMPv6: NA: bb:bb:bb:bb:bb:06 advertised our address fe80::6aa on syz6! ICMPv6: NA: bb:bb:bb:bb:bb:06 advertised our address fe80::6aa on syz6! netlink: 10 bytes leftover after parsing attributes in process `syz-executor4'. netlink: 10 bytes leftover after parsing attributes in process `syz-executor4'. SELinux: unrecognized netlink message: protocol=0 nlmsg_type=770 sclass=netlink_route_socket pig=28518 comm=syz-executor3 SELinux: unrecognized netlink message: protocol=0 nlmsg_type=770 sclass=netlink_route_socket pig=28518 comm=syz-executor3 SELinux: unrecognized netlink message: protocol=0 nlmsg_type=770 sclass=netlink_route_socket pig=28543 comm=syz-executor3 SELinux: unrecognized netlink message: protocol=0 nlmsg_type=33786 sclass=netlink_route_socket pig=28577 comm=syz-executor3 SELinux: unrecognized netlink message: protocol=0 nlmsg_type=33786 sclass=netlink_route_socket pig=28577 comm=syz-executor3 netlink: 3 bytes leftover after parsing attributes in process `syz-executor1'. netlink: 3 bytes leftover after parsing attributes in process `syz-executor1'. netlink: 3 bytes leftover after parsing attributes in process `syz-executor1'. netlink: 3 bytes leftover after parsing attributes in process `syz-executor1'. netlink: 3 bytes leftover after parsing attributes in process `syz-executor1'. netlink: 'syz-executor4': attribute type 1 has an invalid length. netlink: 'syz-executor1': attribute type 29 has an invalid length. netlink: 'syz-executor1': attribute type 29 has an invalid length. SELinux: unrecognized netlink message: protocol=0 nlmsg_type=65283 sclass=netlink_route_socket pig=29079 comm=syz-executor7 SELinux: unrecognized netlink message: protocol=0 nlmsg_type=65283 sclass=netlink_route_socket pig=29099 comm=syz-executor7 sctp: [Deprecated]: syz-executor3 (pid 29138) Use of struct sctp_assoc_value in delayed_ack socket option. Use struct sctp_sack_info instead sctp: [Deprecated]: syz-executor3 (pid 29170) Use of struct sctp_assoc_value in delayed_ack socket option. Use struct sctp_sack_info instead netlink: 'syz-executor4': attribute type 1 has an invalid length. device lo entered promiscuous mode device lo left promiscuous mode device lo entered promiscuous mode device lo left promiscuous mode device lo entered promiscuous mode device lo left promiscuous mode device lo entered promiscuous mode device lo left promiscuous mode device lo entered promiscuous mode device lo left promiscuous mode device lo entered promiscuous mode device lo left promiscuous mode device lo entered promiscuous mode device lo left promiscuous mode SELinux: unrecognized netlink message: protocol=0 nlmsg_type=6248 sclass=netlink_route_socket pig=29573 comm=syz-executor4 device lo entered promiscuous mode device lo left promiscuous mode SELinux: unrecognized netlink message: protocol=0 nlmsg_type=6248 sclass=netlink_route_socket pig=29585 comm=syz-executor4 device lo left promiscuous mode nla_parse: 17 callbacks suppressed netlink: 61 bytes leftover after parsing attributes in process `syz-executor5'. netlink: 61 bytes leftover after parsing attributes in process `syz-executor5'. device lo entered promiscuous mode device lo left promiscuous mode device lo entered promiscuous mode device lo left promiscuous mode device lo entered promiscuous mode device lo left promiscuous mode device lo entered promiscuous mode netlink: 11 bytes leftover after parsing attributes in process `syz-executor1'. netlink: 11 bytes leftover after parsing attributes in process `syz-executor1'. device lo left promiscuous mode FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 CPU: 1 PID: 30036 Comm: syz-executor2 Not tainted 4.15.0-rc5+ #172 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:3368 [inline] kmem_cache_alloc_trace+0x4b/0x750 mm/slab.c:3608 kmalloc include/linux/slab.h:499 [inline] kzalloc include/linux/slab.h:688 [inline] mld_add_delrec net/ipv6/mcast.c:721 [inline] igmp6_leave_group net/ipv6/mcast.c:2435 [inline] igmp6_group_dropped+0x423/0xa80 net/ipv6/mcast.c:700 __ipv6_dev_mc_dec+0x241/0x350 net/ipv6/mcast.c:935 addrconf_leave_solict+0x19b/0x260 net/ipv6/addrconf.c:2089 __ipv6_ifa_notify+0x224/0xaa0 net/ipv6/addrconf.c:5552 ipv6_ifa_notify+0xd9/0x1c0 net/ipv6/addrconf.c:5575 ipv6_del_addr+0x472/0xb70 net/ipv6/addrconf.c:1254 inet6_addr_del+0x2ff/0x5b0 net/ipv6/addrconf.c:2928 addrconf_del_ifaddr+0x139/0x1c0 net/ipv6/addrconf.c:2973 inet6_ioctl+0x86/0x1e0 net/ipv6/af_inet6.c:525 sock_do_ioctl+0x65/0xb0 net/socket.c:956 sock_ioctl+0x2c2/0x440 net/socket.c:1053 vfs_ioctl fs/ioctl.c:46 [inline] do_vfs_ioctl+0x1b1/0x1520 fs/ioctl.c:686 SYSC_ioctl fs/ioctl.c:701 [inline] SyS_ioctl+0x8f/0xc0 fs/ioctl.c:692 entry_SYSCALL_64_fastpath+0x23/0x9a RIP: 0033:0x452ac9 RSP: 002b:00007fc426424c58 EFLAGS: 00000212 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007fc426424aa0 RCX: 0000000000452ac9 RDX: 0000000020000000 RSI: 0000000000008936 RDI: 0000000000000013 RBP: 00007fc426424a90 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000212 R12: 00000000004b767a R13: 00007fc426424bc8 R14: 00000000004b767a R15: 0000000000000000 dccp_invalid_packet: P.Data Offset(0) too small dccp_invalid_packet: P.Data Offset(0) too small SELinux: unrecognized netlink message: protocol=0 nlmsg_type=8 sclass=netlink_route_socket pig=30120 comm=syz-executor1 netlink: 14 bytes leftover after parsing attributes in process `syz-executor4'. netlink: 14 bytes leftover after parsing attributes in process `syz-executor4'. netlink: 13 bytes leftover after parsing attributes in process `syz-executor7'. netlink: 13 bytes leftover after parsing attributes in process `syz-executor7'. device lo entered promiscuous mode device lo left promiscuous mode FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 CPU: 0 PID: 30425 Comm: syz-executor3 Not tainted 4.15.0-rc5+ #172 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:3289 [inline] kmem_cache_alloc_node+0x56/0x760 mm/slab.c:3632 __alloc_skb+0xf1/0x780 net/core/skbuff.c:193 alloc_skb include/linux/skbuff.h:983 [inline] nlmsg_new include/net/netlink.h:511 [inline] rtmsg_ifinfo_build_skb+0x73/0x190 net/core/rtnetlink.c:3123 rtmsg_ifinfo_event.part.26+0x41/0xd0 net/core/rtnetlink.c:3159