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WARNING: CPU: 0 PID: 21751 at mm/percpu.c:891 pcpu_alloc+0x78a/0xab0 mm/percpu.c:891
illegal size (32816) or align (8) for percpu allocation
Kernel panic - not syncing: panic_on_warn set ...

CPU: 0 PID: 21751 Comm: syz-executor.3 Not tainted 4.9.181+ #9
 ffff8801a41879f8 ffffffff81b57e21 ffff8801a4187b00 ffffffff82a3a960
 00000000ffffffff 0000000000000000 0000000000000009 ffff8801a4187ad8
 ffffffff813fd5da 0000000041b58ab3 ffffffff82e312d2 ffffffff813fd401
Call Trace:
 [<00000000e048eea2>] __dump_stack lib/dump_stack.c:15 [inline]
 [<00000000e048eea2>] dump_stack+0xc1/0x120 lib/dump_stack.c:51
 [<00000000759e9d88>] panic+0x1d9/0x3bd kernel/panic.c:180
 [<000000009034b4a6>] __warn.cold+0x2f/0x2f kernel/panic.c:546
 [<00000000f8567d99>] warn_slowpath_fmt+0xc2/0x100 kernel/panic.c:569
 [<000000005a1eb77d>] pcpu_alloc+0x78a/0xab0 mm/percpu.c:891
 [<000000007ea70508>] __alloc_percpu_gfp+0x28/0x30 mm/percpu.c:1066
 [<00000000cdfbb49e>] alloc_extra_elems kernel/bpf/hashtab.c:141 [inline]
 [<00000000cdfbb49e>] htab_map_alloc+0x753/0xf00 kernel/bpf/hashtab.c:256
 [<0000000076f3444f>] find_and_alloc_map kernel/bpf/syscall.c:38 [inline]
 [<0000000076f3444f>] map_create kernel/bpf/syscall.c:259 [inline]
 [<0000000076f3444f>] SYSC_bpf kernel/bpf/syscall.c:1019 [inline]
 [<0000000076f3444f>] SyS_bpf+0x6fc/0x25d0 kernel/bpf/syscall.c:972
 [<00000000d88aea46>] do_syscall_64+0x1ad/0x5c0 arch/x86/entry/common.c:288
 [<000000002cd560a4>] entry_SYSCALL_64_after_swapgs+0x5d/0xdb
Kernel Offset: disabled
Rebooting in 86400 seconds..