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: 0 PID: 1430 Comm: syz-executor.1 Not tainted 4.19.141-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:batadv_hardif_get_by_netdev+0x147/0x3e0 net/batman-adv/hard-interface.c:83 Code: 80 3c 18 00 0f 85 7b 02 00 00 4d 8b 3f 49 81 ff e0 65 50 8c 0f 84 af 01 00 00 e8 a4 4b 49 fa 49 8d 7f 20 48 89 f8 48 c1 e8 03 <80> 3c 18 00 0f 85 5e 02 00 00 49 39 6f 20 75 ba e8 84 4b 49 fa 4d RSP: 0018:ffff888206ab75f0 EFLAGS: 00010202 RAX: 0000000000000004 RBX: dffffc0000000000 RCX: ffffc90007cf3000 RDX: 0000000000040000 RSI: ffffffff8720655c RDI: 0000000000000020 RBP: ffff888211bd6a40 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000001 R11: 0000000000000000 R12: ffff888211bd6a40 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 FS: 00007f030865f700(0000) GS:ffff8880ae600000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00000000016a8660 CR3: 0000000207262000 CR4: 00000000001406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: batadv_hard_if_event+0xaf/0x15c0 net/batman-adv/hard-interface.c:1035 notifier_call_chain+0xc0/0x230 kernel/notifier.c:93 call_netdevice_notifiers net/core/dev.c:1762 [inline] register_netdevice+0xdd2/0x10f0 net/core/dev.c:8747 __ip_tunnel_create+0x398/0x580 net/ipv4/ip_tunnel.c:280 ip_tunnel_init_net+0x330/0x990 net/ipv4/ip_tunnel.c:1025 ops_init+0xb3/0x410 net/core/net_namespace.c:129 setup_net+0x2c2/0x720 net/core/net_namespace.c:315 copy_net_ns+0x1f7/0x335 net/core/net_namespace.c:438 create_new_namespaces+0x3f6/0x7b0 kernel/nsproxy.c:107 copy_namespaces+0x325/0x3c0 kernel/nsproxy.c:165 copy_process.part.0+0x3e13/0x7f40 kernel/fork.c:1900 copy_process kernel/fork.c:1694 [inline] _do_fork+0x22f/0xf30 kernel/fork.c:2207 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x45d4d9 Code: 5d b4 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 2b b4 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007f030865ec78 EFLAGS: 00000246 ORIG_RAX: 0000000000000038 RAX: ffffffffffffffda RBX: 0000000000001f40 RCX: 000000000045d4d9 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 000000006e20cf00 RBP: 000000000118cf90 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000118cf4c R13: 00007ffe429e9eaf R14: 00007f030865f9c0 R15: 000000000118cf4c Modules linked in: kasan: CONFIG_KASAN_INLINE enabled kasan: GPF could be caused by NULL-ptr deref or user memory access general protection fault: 0000 [#2] PREEMPT SMP KASAN CPU: 1 PID: 1447 Comm: syz-executor.3 Tainted: G D 4.19.141-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:__read_once_size include/linux/compiler.h:193 [inline] RIP: 0010:mm_update_next_owner+0x3c6/0x650 kernel/exit.c:452 Code: 48 8d bd 30 03 00 00 48 89 f8 48 c1 e8 03 80 3c 18 00 0f 85 52 02 00 00 48 8b ad 30 03 00 00 4c 8d 6d 10 4c 89 e8 48 c1 e8 03 <80> 3c 18 00 0f 85 29 02 00 00 48 8b 45 10 48 8d a8 70 fa ff ff 49 RSP: 0018:ffff888203f5fd48 EFLAGS: 00010202 RAX: 0000004040404002 RBX: dffffc0000000000 RCX: ffffffff813ecb4e RDX: 0000000000000000 RSI: ffffffff813ecb5c RDI: ffff8880001be9c0 RBP: 0000020202020000 R08: ffff88805641a6a0 R09: 0000000000000000 R10: 0000000000000005 R11: 000000001e9b12f9 R12: ffff8880a5da6e00 R13: 0000020202020010 R14: ffff8882055b0100 R15: ffff888055f2cf80 FS: 0000000000000000(0000) GS:ffff8880ae700000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ffb5a0f2008 CR3: 000000020d2b8000 CR4: 00000000001406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: exit_mm kernel/exit.c:545 [inline] do_exit+0xaad/0x2b70 kernel/exit.c:874 do_group_exit+0x125/0x310 kernel/exit.c:990 __do_sys_exit_group kernel/exit.c:1001 [inline] __se_sys_exit_group kernel/exit.c:999 [inline] __x64_sys_exit_group+0x3a/0x50 kernel/exit.c:999 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x45d4d9 Code: 5d b4 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 2b b4 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007ffd3cc40978 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 RAX: ffffffffffffffda RBX: 000000000000001e RCX: 000000000045d4d9 RDX: 0000000000416e21 RSI: fffffffffffffff7 RDI: 0000000000000000 RBP: 0000000000000000 R08: 0000000000000000 R09: 00007ffd3cc409d0 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 R13: 00007ffd3cc409d0 R14: 0000000000000000 R15: 00007ffd3cc409e0 Modules linked in: ---[ end trace 4753b6118a500d00 ]--- RIP: 0010:batadv_hardif_get_by_netdev+0x147/0x3e0 net/batman-adv/hard-interface.c:83 Code: 80 3c 18 00 0f 85 7b 02 00 00 4d 8b 3f 49 81 ff e0 65 50 8c 0f 84 af 01 00 00 e8 a4 4b 49 fa 49 8d 7f 20 48 89 f8 48 c1 e8 03 <80> 3c 18 00 0f 85 5e 02 00 00 49 39 6f 20 75 ba e8 84 4b 49 fa 4d RSP: 0018:ffff888206ab75f0 EFLAGS: 00010202 RAX: 0000000000000004 RBX: dffffc0000000000 RCX: ffffc90007cf3000 RDX: 0000000000040000 RSI: ffffffff8720655c RDI: 0000000000000020 RBP: ffff888211bd6a40 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000001 R11: 0000000000000000 R12: ffff888211bd6a40 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 FS: 0000000000000000(0000) GS:ffff8880ae700000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ffb5a0f2008 CR3: 000000020d2b8000 CR4: 00000000001406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400