Repository files (latest commit first)

Filename	Latest commit message	Latest commit date
Bixuan Cui 93937596e0 bpf: Add oversize check before call kvcalloc() ... [ Upstream commit 0e6491b559704da720f6da09dd0a52c4df44c514 ] Commit 7661809d493b ("mm: don't allow oversized kvmalloc() calls") add the oversize check. When the allocation is larger than what kmalloc() supports, the following warning triggered: WARNING: CPU: 0 PID: 8408 at mm/util.c:597 kvmalloc_node+0x108/0x110 mm/util.c:597 Modules linked in: CPU: 0 PID: 8408 Comm: syz-executor221 Not tainted 5.14.0-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:kvmalloc_node+0x108/0x110 mm/util.c:597 Call Trace: kvmalloc include/linux/mm.h:806 [inline] kvmalloc_array include/linux/mm.h:824 [inline] kvcalloc include/linux/mm.h:829 [inline] check_btf_line kernel/bpf/verifier.c:9925 [inline] check_btf_info kernel/bpf/verifier.c:10049 [inline] bpf_check+0xd634/0x150d0 kernel/bpf/verifier.c:13759 bpf_prog_load kernel/bpf/syscall.c:2301 [inline] __sys_bpf+0x11181/0x126e0 kernel/bpf/syscall.c:4587 __do_sys_bpf kernel/bpf/syscall.c:4691 [inline] __se_sys_bpf kernel/bpf/syscall.c:4689 [inline] __x64_sys_bpf+0x78/0x90 kernel/bpf/syscall.c:4689 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x44/0xae Reported-by: syzbot+f3e749d4c662818ae439@syzkaller.appspotmail.com Signed-off-by: Bixuan Cui <cuibixuan@huawei.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org> Acked-by: Yonghong Song <yhs@fb.com> Link: https://lore.kernel.org/bpf/20210911005557.45518-1-cuibixuan@huawei.com Signed-off-by: Sasha Levin <sashal@kernel.org>		2021-09-30 10:09:25 +02:00
..
arraymap.c
bpf_lru_list.c	bpf_lru_list: Read double-checked variable once without lock	2021-03-04 10:26:16 +01:00
bpf_lru_list.h
btf.c
cgroup.c	bpf, cgroup: Fix problematic bounds check	2021-02-10 09:25:27 +01:00
core.c	bpf: Introduce BPF nospec instruction for mitigating Spectre v4	2021-09-15 09:47:38 +02:00
cpumap.c
devmap.c	devmap: Use bpf_map_area_alloc() for allocating hash buckets	2020-06-30 15:36:56 -04:00
disasm.c	bpf: Introduce BPF nospec instruction for mitigating Spectre v4	2021-09-15 09:47:38 +02:00
disasm.h
hashtab.c	bpf: Zero-fill re-used per-cpu map element	2020-11-18 19:20:26 +01:00
helpers.c	bpf: Fix helper bpf_map_peek_elem_proto pointing to wrong callback	2021-01-23 15:57:56 +01:00
inode.c	bpf: Fix a rcu warning for bpffs map pretty-print	2020-10-01 13:18:19 +02:00
local_storage.c
lpm_trie.c
Makefile	bpf: Don't rely on GCC __attribute__((optimize)) to disable GCSE	2020-11-18 19:20:26 +01:00
map_in_map.c
map_in_map.h
offload.c
percpu_freelist.c
percpu_freelist.h
queue_stack_maps.c
reuseport_array.c
stackmap.c	bpf: Check for integer overflow when using roundup_pow_of_two()	2021-02-17 10:35:16 +01:00
syscall.c	bpf: sockmap: Require attach_bpf_fd when detaching a program	2020-08-07 09:34:02 +02:00
sysfs_btf.c	bpf: Fix sysfs export of empty BTF section	2020-10-14 10:32:58 +02:00
tnum.c
verifier.c	bpf: Add oversize check before call kvcalloc()	2021-09-30 10:09:25 +02:00
xskmap.c