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authorAndrey Ryabinin <aryabinin@virtuozzo.com>2018-09-24 18:20:42 +0200
committerJozsef Kadlecsik <kadlec@blackhole.kfki.hu>2018-09-24 18:20:42 +0200
commit77740180d1dad8669a8b64108849a2c012d3011a (patch)
tree0a7b3f1bfe114a96c9c3490c4d7e3a9ea205e5b7 /lib/print.c
parent4c16de1a51928ee023199195652ed90ce0fd5950 (diff)
netfilter: ipset: fix ip_set_list allocation failure
ip_set_create() and ip_set_net_init() attempt to allocate physically contiguous memory for ip_set_list. If memory is fragmented, the allocations could easily fail: vzctl: page allocation failure: order:7, mode:0xc0d0 Call Trace: dump_stack+0x19/0x1b warn_alloc_failed+0x110/0x180 __alloc_pages_nodemask+0x7bf/0xc60 alloc_pages_current+0x98/0x110 kmalloc_order+0x18/0x40 kmalloc_order_trace+0x26/0xa0 __kmalloc+0x279/0x290 ip_set_net_init+0x4b/0x90 [ip_set] ops_init+0x3b/0xb0 setup_net+0xbb/0x170 copy_net_ns+0xf1/0x1c0 create_new_namespaces+0xf9/0x180 copy_namespaces+0x8e/0xd0 copy_process+0xb61/0x1a00 do_fork+0x91/0x320 Use kvcalloc() to fallback to 0-order allocations if high order page isn't available. Signed-off-by: Andrey Ryabinin <aryabinin@virtuozzo.com> Signed-off-by: Jozsef Kadlecsik <kadlec@blackhole.kfki.hu>
Diffstat (limited to 'lib/print.c')
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