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WARNING: CPU: 0 PID: 31626 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: 31626 Comm: syz-executor.5 Not tainted 4.9.181+ #9
 ffff880193c079f8 ffffffff81b57e21 ffff880193c07b00 ffffffff82a3a960
 00000000ffffffff 0000000000000000 0000000000000009 ffff880193c07ad8
 ffffffff813fd5da 0000000041b58ab3 ffffffff82e312d2 ffffffff813fd401
Call Trace:
 [<000000000f0ea5e7>] __dump_stack lib/dump_stack.c:15 [inline]
 [<000000000f0ea5e7>] dump_stack+0xc1/0x120 lib/dump_stack.c:51
 [<00000000f7d67089>] panic+0x1d9/0x3bd kernel/panic.c:180
 [<0000000026ea004d>] __warn.cold+0x2f/0x2f kernel/panic.c:546
 [<00000000d807939c>] warn_slowpath_fmt+0xc2/0x100 kernel/panic.c:569
 [<00000000751b9d9b>] pcpu_alloc+0x78a/0xab0 mm/percpu.c:891
 [<00000000b51ffe57>] __alloc_percpu_gfp+0x28/0x30 mm/percpu.c:1066
 [<00000000e482b662>] alloc_extra_elems kernel/bpf/hashtab.c:141 [inline]
 [<00000000e482b662>] htab_map_alloc+0x753/0xf00 kernel/bpf/hashtab.c:256
 [<000000007c1d68bb>] find_and_alloc_map kernel/bpf/syscall.c:38 [inline]
 [<000000007c1d68bb>] map_create kernel/bpf/syscall.c:259 [inline]
 [<000000007c1d68bb>] SYSC_bpf kernel/bpf/syscall.c:1019 [inline]
 [<000000007c1d68bb>] SyS_bpf+0x6fc/0x25d0 kernel/bpf/syscall.c:972
 [<00000000d417db78>] do_syscall_64+0x1ad/0x5c0 arch/x86/entry/common.c:288
 [<000000009fffac64>] entry_SYSCALL_64_after_swapgs+0x5d/0xdb
Kernel Offset: disabled
Rebooting in 86400 seconds..