------------[ cut here ]------------
WARNING: CPU: 1 PID: 10021 at mm/percpu.c:891 pcpu_alloc+0x78a/0xab0 mm/percpu.c:891
illegal size (532536) or align (8) for percpu allocation
Kernel panic - not syncing: panic_on_warn set ...

CPU: 1 PID: 10021 Comm: syz-executor.5 Not tainted 4.9.168+ #39
 ffff8801cdb87a00 ffffffff81b4f5d1 ffff8801cdb87b00 ffffffff82a39ba0
 00000000ffffffff 0000000000000001 0000000000000009 ffff8801cdb87ae0
 ffffffff813f945a 0000000041b58ab3 ffffffff82e2ec5a ffffffff813f9281
Call Trace:
 [<00000000fd5b396c>] __dump_stack lib/dump_stack.c:15 [inline]
 [<00000000fd5b396c>] dump_stack+0xc1/0x120 lib/dump_stack.c:51
 [<0000000046185c08>] panic+0x1d9/0x3bd kernel/panic.c:180
 [<000000008be9c787>] __warn.cold+0x2f/0x2f kernel/panic.c:546
 [<000000007fa870a0>] warn_slowpath_fmt+0xc2/0x100 kernel/panic.c:569
 [<0000000082e95ec5>] pcpu_alloc+0x78a/0xab0 mm/percpu.c:891
 [<000000005b553d4f>] __alloc_percpu_gfp+0x28/0x30 mm/percpu.c:1066
 [<00000000377c2281>] alloc_extra_elems kernel/bpf/hashtab.c:133 [inline]
 [<00000000377c2281>] htab_map_alloc+0x74f/0xef0 kernel/bpf/hashtab.c:243
 [<000000003b904594>] find_and_alloc_map kernel/bpf/syscall.c:38 [inline]
 [<000000003b904594>] map_create kernel/bpf/syscall.c:259 [inline]
 [<000000003b904594>] SYSC_bpf kernel/bpf/syscall.c:1019 [inline]
 [<000000003b904594>] SyS_bpf+0x6fc/0x25d0 kernel/bpf/syscall.c:972
 [<000000009919c3d6>] do_syscall_64+0x1ad/0x570 arch/x86/entry/common.c:285
 [<0000000037879a4e>] entry_SYSCALL_64_after_swapgs+0x5d/0xdb
Kernel Offset: disabled
Rebooting in 86400 seconds..