WARNING: CPU: 1 PID: 30474 at mm/percpu.c:891 pcpu_alloc+0x78a/0xab0 mm/percpu.c:891
illegal size (54960) or align (8) for percpu allocation
Kernel panic - not syncing: panic_on_warn set ...

CPU: 1 PID: 30474 Comm: syz-executor.2 Not tainted 4.9.166+ #35
 ffff880178127a00 ffffffff81b4ef81 ffff880178127b00 ffffffff82a39ba0
 00000000ffffffff 0000000000000001 0000000000000009 ffff880178127ae0
 ffffffff813f91aa 0000000041b58ab3 ffffffff82e2ec1a ffffffff813f8fd1
Call Trace:
 [<00000000ab6ca8f0>] __dump_stack lib/dump_stack.c:15 [inline]
 [<00000000ab6ca8f0>] dump_stack+0xc1/0x120 lib/dump_stack.c:51
 [<00000000d1acf9b1>] panic+0x1d9/0x3bd kernel/panic.c:180
 [<000000004fd388bf>] __warn.cold+0x2f/0x2f kernel/panic.c:546
 [<00000000d00d9532>] warn_slowpath_fmt+0xc2/0x100 kernel/panic.c:569
 [<00000000b6af387f>] pcpu_alloc+0x78a/0xab0 mm/percpu.c:891
 [<000000003d8c9e14>] __alloc_percpu_gfp+0x28/0x30 mm/percpu.c:1066
 [<000000002b963ca4>] alloc_extra_elems kernel/bpf/hashtab.c:133 [inline]
 [<000000002b963ca4>] htab_map_alloc+0x74f/0xef0 kernel/bpf/hashtab.c:243
 [<000000009d198475>] find_and_alloc_map kernel/bpf/syscall.c:38 [inline]
 [<000000009d198475>] map_create kernel/bpf/syscall.c:259 [inline]
 [<000000009d198475>] SYSC_bpf kernel/bpf/syscall.c:1019 [inline]
 [<000000009d198475>] SyS_bpf+0x6fc/0x25d0 kernel/bpf/syscall.c:972
 [<000000007c5939b7>] do_syscall_64+0x1ad/0x570 arch/x86/entry/common.c:285
 [<0000000003175b8b>] entry_SYSCALL_64_after_swapgs+0x5d/0xdb
Kernel Offset: disabled
Rebooting in 86400 seconds..