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| author | Shung-Hsi Yu <shung-hsi.yu@suse.com> | 2020-08-31 22:37:09 +0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2020-09-12 11:45:33 +0200 |
| commit | c426d2c1cb9f6dde805b7592890194bedfc13f76 (patch) | |
| tree | a9f182b439bfbb71b4594f7d1c3f91e338f98c7a /kernel/trace/trace_functions_graph.c | |
| parent | 38f2f49b7bf236fc4c23a5fb4b64761432e0120d (diff) | |
net: ethernet: mlx4: Fix memory allocation in mlx4_buddy_init()
commit cbedcb044e9cc4e14bbe6658111224bb923094f4 upstream.
On machines with much memory (> 2 TByte) and log_mtts_per_seg == 0, a
max_order of 31 will be passed to mlx_buddy_init(), which results in
s = BITS_TO_LONGS(1 << 31) becoming a negative value, leading to
kvmalloc_array() failure when it is converted to size_t.
mlx4_core 0000:b1:00.0: Failed to initialize memory region table, aborting
mlx4_core: probe of 0000:b1:00.0 failed with error -12
Fix this issue by changing the left shifting operand from a signed literal to
an unsigned one.
Fixes: 225c7b1feef1 ("IB/mlx4: Add a driver Mellanox ConnectX InfiniBand adapters")
Signed-off-by: Shung-Hsi Yu <shung-hsi.yu@suse.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'kernel/trace/trace_functions_graph.c')
0 files changed, 0 insertions, 0 deletions