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| author | Stewart Smith <stewart@linux.vnet.ibm.com> | 2017-02-23 13:01:42 +1100 |
|---|---|---|
| committer | Stewart Smith <stewart@linux.vnet.ibm.com> | 2017-03-02 18:22:43 +1100 |
| commit | 0d31de63ff037a4a0d77ce96005977b62ce12532 (patch) | |
| tree | 7b74f7639a32fd4bcb8344b29ddf8f778ab34ab1 /hw/slw.c | |
| parent | 42b7ef13b3475199791ce2cdc6e6f9858003f670 (diff) | |
| download | skiboot-0d31de63ff037a4a0d77ce96005977b62ce12532.zip skiboot-0d31de63ff037a4a0d77ce96005977b62ce12532.tar.gz skiboot-0d31de63ff037a4a0d77ce96005977b62ce12532.tar.bz2 | |
hw/slw: fix possible NULL dereference
Found by static analysis
Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com>
Diffstat (limited to 'hw/slw.c')
| -rw-r--r-- | hw/slw.c | 10 |
1 files changed, 8 insertions, 2 deletions
@@ -1219,11 +1219,17 @@ int64_t opal_slw_set_reg(uint64_t cpu_pir, uint64_t sprn, uint64_t val) { struct cpu_thread *c = find_cpu_by_pir(cpu_pir); - struct proc_chip *chip = get_chip(c->chip_id); - void *image = (void *) chip->slw_base; + struct proc_chip *chip; + void *image; int rc; int i; int spr_is_supported = 0; + + assert(c); + chip = get_chip(c->chip_id); + assert(chip); + image = (void *) chip->slw_base; + /* Check of the SPR is supported by libpore */ for ( i=0; i < SLW_SPR_REGS_SIZE ; i++) { if (sprn == SLW_SPR_REGS[i].value) { |