Node 0 active_anon:51708kB inactive_anon:95612kB active_file:44kB inactive_file:20kB unevictable:0kB isolated(anon):0kB isolated(file):0kB mapped:174156kB dirty:0kB writeback:80kB shmem:97044kB shmem_thp: 0kB shmem_pmdmapped: 0kB anon_thp: 12288kB writeback_tmp:0kB unstable:0kB all_unreclaimable? no
------------[ cut here ]------------
Node 1 active_anon:1528kB inactive_anon:53204kB active_file:52kB inactive_file:64kB unevictable:0kB isolated(anon):0kB isolated(file):0kB mapped:34832kB dirty:0kB writeback:8kB shmem:53564kB shmem_thp: 0kB shmem_pmdmapped: 0kB anon_thp: 0kB writeback_tmp:0kB unstable:0kB all_unreclaimable? yes
WARNING: CPU: 0 PID: 23360 at lib/debugobjects.c:287 debug_print_object.cold+0xa7/0xdb lib/debugobjects.c:287
Node 0 
Kernel panic - not syncing: panic_on_warn set ...

CPU: 0 PID: 23360 Comm: syz-executor.0 Not tainted 4.14.227-syzkaller #0
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+0x1b2/0x281 lib/dump_stack.c:58
 panic+0x1f9/0x42d kernel/panic.c:183
 __warn.cold+0x20/0x44 kernel/panic.c:547
 report_bug+0x208/0x250 lib/bug.c:186
 fixup_bug arch/x86/kernel/traps.c:177 [inline]
 fixup_bug arch/x86/kernel/traps.c:172 [inline]
 do_error_trap+0x195/0x2d0 arch/x86/kernel/traps.c:295
 invalid_op+0x1b/0x40 arch/x86/entry/entry_64.S:964
DMA free:10960kB min:204kB low:252kB high:300kB active_anon:12kB inactive_anon:0kB active_file:0kB inactive_file:0kB unevictable:0kB writepending:0kB present:15992kB managed:15908kB mlocked:0kB kernel_stack:0kB pagetables:0kB bounce:0kB free_pcp:0kB local_pcp:0kB free_cma:0kB
RIP: 0010:debug_print_object.cold+0xa7/0xdb lib/debugobjects.c:287
RSP: 0018:ffff888034e4f248 EFLAGS: 00010086
RAX: 0000000000000061 RBX: 0000000000000005 RCX: 0000000000000000
RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffed10069c9e3f
RBP: ffffffff878b6e80 R08: 0000000000000061 R09: 0000000000000001
R10: 0000000000000000 R11: ffff8880ab622200 R12: 0000000000000000
R13: 0000000000000000 R14: ffff88802c3cd630 R15: 1ffff110069c9e52
 debug_object_assert_init lib/debugobjects.c:656 [inline]
 debug_object_assert_init+0x1d3/0x2d0 lib/debugobjects.c:627
 debug_timer_assert_init kernel/time/timer.c:708 [inline]
 debug_assert_init kernel/time/timer.c:756 [inline]
 del_timer+0x5d/0xe0 kernel/time/timer.c:1151
 try_to_grab_pending+0x243/0x610 kernel/workqueue.c:1225
 __cancel_work_timer+0x90/0x460 kernel/workqueue.c:2923
 batadv_nc_mesh_free+0x41/0x120 net/batman-adv/network-coding.c:1880
 batadv_mesh_free+0x70/0x150 net/batman-adv/main.c:231
 batadv_mesh_init+0x561/0x630 net/batman-adv/main.c:216
 batadv_softif_init_late+0xa26/0xc90 net/batman-adv/soft-interface.c:856
 register_netdevice+0x291/0xe40 net/core/dev.c:7590
 rtnl_newlink+0x14dc/0x1830 net/core/rtnetlink.c:2742
syz-executor.1: 
 rtnetlink_rcv_msg+0x3be/0xb10 net/core/rtnetlink.c:4316
 netlink_rcv_skb+0x125/0x390 net/netlink/af_netlink.c:2433
lowmem_reserve[]:
 netlink_unicast_kernel net/netlink/af_netlink.c:1287 [inline]
 netlink_unicast+0x437/0x610 net/netlink/af_netlink.c:1313
 0
page allocation failure: order:0
, mode:0x142c0c2(GFP_HIGHUSER|__GFP_COMP|__GFP_ZERO), nodemask=
 netlink_sendmsg+0x62e/0xb80 net/netlink/af_netlink.c:1878
 2717
 2718
 sock_sendmsg_nosec net/socket.c:646 [inline]
 sock_sendmsg+0xb5/0x100 net/socket.c:656
 SYSC_sendto net/socket.c:1763 [inline]
 SyS_sendto+0x1c7/0x2c0 net/socket.c:1731
 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292
 entry_SYSCALL_64_after_hwframe+0x46/0xbb
RIP: 0033:0x4193ec
(null)
RSP: 002b:00007fff16dc82c0 EFLAGS: 00000293
syz-executor.1 cpuset=
 ORIG_RAX: 000000000000002c
RAX: ffffffffffffffda RBX: 00000000014a4320 RCX: 00000000004193ec
RDX: 000000000000003c RSI: 00000000014a4370 RDI: 0000000000000003
RBP: 0000000000000000 R08: 00007fff16dc8314 R09: 000000000000000c
R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000000
R13: 00000000014a4370 R14: 0000000000000003 R15: 0000000000000000
Kernel Offset: disabled
Rebooting in 86400 seconds..