kasan: CONFIG_KASAN_INLINE enabled kasan: GPF could be caused by NULL-ptr deref or user memory access general protection fault: 0000 [#1] PREEMPT SMP KASAN CPU: 1 PID: 12079 Comm: syz-executor.0 Not tainted 5.2.0-rc3+ #50 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:dst_dev_put+0x24/0x280 net/core/dst.c:156 Code: 90 90 90 90 90 90 55 48 89 e5 41 56 41 55 41 54 53 48 89 fb e8 3d b8 eb fb 48 89 da 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 <80> 3c 02 00 0f 85 e1 01 00 00 48 8d 7b 3a 4c 8b 23 48 b8 00 00 00 RSP: 0018:ffff8880ae909cf8 EFLAGS: 00010207 RAX: dffffc0000000000 RBX: 0000000000003ffc RCX: 1ffffffff13017d6 RDX: 00000000000007ff RSI: ffffffff8584ee73 RDI: 0000000000003ffc RBP: ffff8880ae909d18 R08: ffff888085df2240 R09: ffff888085df2b08 R10: ffff888085df2ae8 R11: ffff888085df2240 R12: 0000000000000000 R13: 0000000000000007 R14: 0000000000003ffc R15: 0000607f5146c7d8 FS: 00007f8433786700(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ff4173de518 CR3: 000000008d0c9000 CR4: 00000000001406e0 Call Trace: rt_fibinfo_free_cpus.part.0+0xdb/0x130 net/ipv4/fib_semantics.c:198 rt_fibinfo_free_cpus net/ipv4/fib_semantics.c:190 [inline] fib_nh_common_release+0x107/0x280 net/ipv4/fib_semantics.c:211 fib_nh_release net/ipv4/fib_semantics.c:223 [inline] free_fib_info_rcu+0x117/0x210 net/ipv4/fib_semantics.c:232 __rcu_reclaim kernel/rcu/rcu.h:222 [inline] rcu_do_batch kernel/rcu/tree.c:2092 [inline] invoke_rcu_callbacks kernel/rcu/tree.c:2310 [inline] rcu_core+0xba5/0x1500 kernel/rcu/tree.c:2291 __do_softirq+0x25c/0x94c kernel/softirq.c:293 invoke_softirq kernel/softirq.c:374 [inline] irq_exit+0x180/0x1d0 kernel/softirq.c:414 exiting_irq arch/x86/include/asm/apic.h:536 [inline] smp_apic_timer_interrupt+0x13b/0x550 arch/x86/kernel/apic/apic.c:1068 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:806 RIP: 0010:should_resched arch/x86/include/asm/preempt.h:102 [inline] RIP: 0010:__local_bh_enable_ip+0x18e/0x270 kernel/softirq.c:197 Code: 00 00 00 00 fc ff df 48 c1 e8 03 80 3c 10 00 0f 85 df 00 00 00 48 83 3d df f9 6d 07 00 0f 84 8f 00 00 00 fb 66 0f 1f 44 00 00 <65> 8b 05 53 83 bd 7e 85 c0 74 7f 5b 41 5c 41 5d 5d c3 80 3d bf 48 RSP: 0018:ffff8880672b7588 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff13 RAX: 1ffffffff1164e80 RBX: 0000000000000200 RCX: 1ffff11010bbe55c RDX: dffffc0000000000 RSI: ffff888085df2ac0 RDI: ffff888085df2abc RBP: ffff8880672b75a0 R08: ffff888085df2240 R09: ffff888085df2ae0 R10: 0000000000000000 R11: 0000000000000000 R12: ffffffff85b719d1 R13: ffff888085df2240 R14: 0000000000000001 R15: dffffc0000000000 local_bh_enable include/linux/bottom_half.h:32 [inline] get_next_corpse net/netfilter/nf_conntrack_core.c:2018 [inline] nf_ct_iterate_cleanup+0x217/0x4e0 net/netfilter/nf_conntrack_core.c:2041 nf_ct_iterate_cleanup_net net/netfilter/nf_conntrack_core.c:2126 [inline] nf_ct_iterate_cleanup_net+0x133/0x190 net/netfilter/nf_conntrack_core.c:2111 masq_device_event+0xb5/0xe0 net/netfilter/nf_nat_masquerade.c:88 notifier_call_chain+0xc2/0x230 kernel/notifier.c:95 __raw_notifier_call_chain kernel/notifier.c:396 [inline] raw_notifier_call_chain+0x2e/0x40 kernel/notifier.c:403 call_netdevice_notifiers_info+0x3f/0x90 net/core/dev.c:1749 call_netdevice_notifiers_extack net/core/dev.c:1761 [inline] call_netdevice_notifiers net/core/dev.c:1775 [inline] __dev_notify_flags+0x1e9/0x2c0 net/core/dev.c:7590 dev_change_flags+0x10d/0x170 net/core/dev.c:7626 devinet_ioctl+0x138a/0x1c50 net/ipv4/devinet.c:1100 inet_ioctl+0x1f4/0x340 net/ipv4/af_inet.c:948 sock_do_ioctl+0xd8/0x2f0 net/socket.c:1043 sock_ioctl+0x3ed/0x780 net/socket.c:1194 vfs_ioctl fs/ioctl.c:46 [inline] file_ioctl fs/ioctl.c:509 [inline] do_vfs_ioctl+0xd5f/0x1380 fs/ioctl.c:696 ksys_ioctl+0xab/0xd0 fs/ioctl.c:713 __do_sys_ioctl fs/ioctl.c:720 [inline] __se_sys_ioctl fs/ioctl.c:718 [inline] __x64_sys_ioctl+0x73/0xb0 fs/ioctl.c:718 do_syscall_64+0xfd/0x680 arch/x86/entry/common.c:301 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x4592c9 Code: fd b7 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 cb b7 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007f8433785c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00000000004592c9 RDX: 00000000200001c0 RSI: 0000000000008914 RDI: 0000000000000003 RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f84337866d4 R13: 00000000004c4f17 R14: 00000000004d8f60 R15: 00000000ffffffff Modules linked in: ---[ end trace 44dbbfe85fde908f ]--- RIP: 0010:dst_dev_put+0x24/0x280 net/core/dst.c:156 Code: 90 90 90 90 90 90 55 48 89 e5 41 56 41 55 41 54 53 48 89 fb e8 3d b8 eb fb 48 89 da 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 <80> 3c 02 00 0f 85 e1 01 00 00 48 8d 7b 3a 4c 8b 23 48 b8 00 00 00 RSP: 0018:ffff8880ae909cf8 EFLAGS: 00010207 RAX: dffffc0000000000 RBX: 0000000000003ffc RCX: 1ffffffff13017d6 RDX: 00000000000007ff RSI: ffffffff8584ee73 RDI: 0000000000003ffc RBP: ffff8880ae909d18 R08: ffff888085df2240 R09: ffff888085df2b08 R10: ffff888085df2ae8 R11: ffff888085df2240 R12: 0000000000000000 R13: 0000000000000007 R14: 0000000000003ffc R15: 0000607f5146c7d8 FS: 00007f8433786700(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ff4173de518 CR3: 000000008d0c9000 CR4: 00000000001406e0