fail_dump lib/fault-inject.c:51 [inline] should_fail.cold+0xa/0x14 lib/fault-inject.c:149 ------------[ cut here ]------------ __should_failslab+0x115/0x180 mm/failslab.c:32 should_failslab+0x5/0xf mm/slab_common.c:1558 WARNING: CPU: 0 PID: 6411 at net/batman-adv/bat_iv_ogm.c:597 batadv_iv_ogm_emit net/batman-adv/bat_iv_ogm.c:597 [inline] WARNING: CPU: 0 PID: 6411 at net/batman-adv/bat_iv_ogm.c:597 batadv_iv_send_outstanding_bat_ogm_packet.cold+0x3f/0x46 net/batman-adv/bat_iv_ogm.c:1857 slab_pre_alloc_hook mm/slab.h:424 [inline] slab_alloc mm/slab.c:3383 [inline] kmem_cache_alloc+0x277/0x370 mm/slab.c:3557 Kernel panic - not syncing: panic_on_warn set ... kmem_cache_zalloc include/linux/slab.h:699 [inline] __kernfs_new_node+0xd2/0x680 fs/kernfs/dir.c:633 kernfs_new_node+0x92/0x120 fs/kernfs/dir.c:693 kernfs_create_link+0xd1/0x228 fs/kernfs/symlink.c:40 sysfs_do_create_link_sd+0x90/0x130 fs/sysfs/symlink.c:43 sysfs_do_create_link fs/sysfs/symlink.c:79 [inline] sysfs_create_link+0x5f/0xc0 fs/sysfs/symlink.c:91 netdev_adjacent_sysfs_add net/core/dev.c:6947 [inline] __netdev_adjacent_dev_insert.part.0+0x3d6/0x7c0 net/core/dev.c:7002 __netdev_adjacent_dev_insert net/core/dev.c:7167 [inline] __netdev_adjacent_dev_link_lists net/core/dev.c:7079 [inline] __netdev_adjacent_dev_link_neighbour net/core/dev.c:7108 [inline] __netdev_upper_dev_link+0x521/0x980 net/core/dev.c:7167 batadv_hardif_enable_interface+0x250/0xba0 net/batman-adv/hard-interface.c:773 batadv_softif_slave_add+0x8a/0x100 net/batman-adv/soft-interface.c:898 do_set_master+0x1c8/0x220 net/core/rtnetlink.c:2321 do_setlink+0x7ec/0x3540 net/core/rtnetlink.c:2455 rtnl_newlink+0xda0/0x15a0 net/core/rtnetlink.c:3077 rtnetlink_rcv_msg+0x453/0xb80 net/core/rtnetlink.c:4777 netlink_rcv_skb+0x160/0x440 net/netlink/af_netlink.c:2455 netlink_unicast_kernel net/netlink/af_netlink.c:1318 [inline] netlink_unicast+0x4d5/0x690 net/netlink/af_netlink.c:1344 netlink_sendmsg+0x6bb/0xc40 net/netlink/af_netlink.c:1909 sock_sendmsg_nosec net/socket.c:622 [inline] sock_sendmsg+0xc3/0x120 net/socket.c:632 ___sys_sendmsg+0x7bb/0x8e0 net/socket.c:2115 __sys_sendmsg net/socket.c:2153 [inline] __do_sys_sendmsg net/socket.c:2162 [inline] __se_sys_sendmsg net/socket.c:2160 [inline] __x64_sys_sendmsg+0x132/0x220 net/socket.c:2160 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x45c1d9 Code: 8d b6 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 5b b6 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007f88c4703c78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 000000000002af00 RCX: 000000000045c1d9 RDX: 0000000000000000 RSI: 0000000020000080 RDI: 0000000000000003 RBP: 00007f88c4703ca0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000005 R13: 00007ffca592bc5f R14: 00007f88c47049c0 R15: 000000000078bfac CPU: 0 PID: 6411 Comm: kworker/u4:5 Not tainted 4.19.133-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Workqueue: bat_events batadv_iv_send_outstanding_bat_ogm_packet Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x1fc/0x2fe lib/dump_stack.c:118 panic+0x26a/0x50e kernel/panic.c:186 __warn.cold+0x20/0x61 kernel/panic.c:541 batman_adv: batadv0: Adding interface: veth205 batman_adv: batadv0: The MTU of interface veth205 is too small (1500) to handle the transport of batman-adv packets. Packets going over this interface will be fragmented on layer2 which could impact the performance. Setting the MTU to 1560 would solve the problem. report_bug+0x262/0x2b0 lib/bug.c:186 fixup_bug arch/x86/kernel/traps.c:178 [inline] fixup_bug arch/x86/kernel/traps.c:173 [inline] do_error_trap+0x1d7/0x310 arch/x86/kernel/traps.c:296 invalid_op+0x14/0x20 arch/x86/entry/entry_64.S:1038 RIP: 0010:batadv_iv_ogm_emit net/batman-adv/bat_iv_ogm.c:597 [inline] RIP: 0010:batadv_iv_send_outstanding_bat_ogm_packet.cold+0x3f/0x46 net/batman-adv/bat_iv_ogm.c:1857 Code: ad ff ff e8 3d 42 4f fa 48 c7 c7 40 5c 47 88 e8 e0 54 3a fa e9 19 ad ff ff e8 27 42 4f fa 48 c7 c7 40 59 47 88 e8 ca 54 3a fa <0f> 0b e9 01 ad ff ff e8 0f 42 4f fa 48 c7 c7 40 59 47 88 e8 b2 54 RSP: 0018:ffff8880a8a4fcc8 EFLAGS: 00010282 batman_adv: batadv0: Not using interface veth205 (retrying later): interface not active RAX: 0000000000000024 RBX: ffff88804f76c4c8 RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffffffff8154cd91 RDI: ffffed1015149f8b RBP: ffff88805117cc00 R08: 0000000000000024 R09: 0000000000000000 R10: 0000000000000005 R11: 0000000000000000 R12: ffff88809139f680 R13: ffff888029f0a040 R14: ffff88804f76c480 R15: ffff88805117cc00 process_one_work+0x864/0x1570 kernel/workqueue.c:2155 worker_thread+0x64c/0x1130 kernel/workqueue.c:2298 kthread+0x30b/0x410 kernel/kthread.c:246 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415 Kernel Offset: disabled Rebooting in 86400 seconds..