Revision d66e0452bf6b0d98cd1a478918c92f2baffcb413 authored by Peter Meerwald on 18 September 2013, 21:10:00 UTC, committed by Jonathan Cameron on 21 September 2013, 11:30:58 UTC
if device has available_scan_masks set and the buffer is enabled without any scan_elements enabled, in a NULL pointer is dereferenced in iio_compute_scan_bytes() [ 18.993713] Unable to handle kernel NULL pointer dereference at virtual address 00000000 [ 19.002593] pgd = debd4000 [ 19.005432] [00000000] *pgd=9ebc0831, *pte=00000000, *ppte=00000000 [ 19.012329] Internal error: Oops: 17 [#1] PREEMPT ARM [ 19.017639] Modules linked in: [ 19.020843] CPU: 0 Not tainted (3.9.11-00036-g75c888a-dirty #207) [ 19.027587] PC is at _find_first_bit_le+0xc/0x2c [ 19.032440] LR is at iio_compute_scan_bytes+0x2c/0xf4 [ 19.037719] pc : [<c021dc60>] lr : [<c03198d0>] psr: 200d0013 [ 19.037719] sp : debd9ed0 ip : 00000000 fp : 000802bc [ 19.049713] r10: 00000000 r9 : 00000000 r8 : deb67250 [ 19.055206] r7 : 00000000 r6 : 00000000 r5 : 00000000 r4 : deb67000 [ 19.062011] r3 : de96ec00 r2 : 00000000 r1 : 00000004 r0 : 00000000 [ 19.068847] Flags: nzCv IRQs on FIQs on Mode SVC_32 ISA ARM Segment user [ 19.076324] Control: 10c5387d Table: 9ebd4019 DAC: 00000015 problem is the rollback code in iio_update_buffers(), old_mask may be NULL (e.g. on first call) I'm not too confident about the fix; works for me... Signed-off-by: Peter Meerwald <pmeerw@pmeerw.net> Reviewed-by: Lars-Peter Clausen <lars@metafoo.de> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
1 parent a97dd06
| File | Mode | Size |
|---|---|---|
| asymmetric_keys | ||
| async_tx | ||
| 842.c | -rw-r--r-- | 4.6 KB |
| Kconfig | -rw-r--r-- | 39.4 KB |
| Makefile | -rw-r--r-- | 3.7 KB |
| ablkcipher.c | -rw-r--r-- | 18.2 KB |
| aead.c | -rw-r--r-- | 14.0 KB |
| aes_generic.c | -rw-r--r-- | 61.9 KB |
| af_alg.c | -rw-r--r-- | 9.3 KB |
| ahash.c | -rw-r--r-- | 12.7 KB |
| algapi.c | -rw-r--r-- | 19.8 KB |
| algboss.c | -rw-r--r-- | 6.4 KB |
| algif_hash.c | -rw-r--r-- | 6.8 KB |
| algif_skcipher.c | -rw-r--r-- | 13.2 KB |
| ansi_cprng.c | -rw-r--r-- | 10.8 KB |
| anubis.c | -rw-r--r-- | 27.8 KB |
| api.c | -rw-r--r-- | 13.4 KB |
| arc4.c | -rw-r--r-- | 3.4 KB |
| authenc.c | -rw-r--r-- | 19.6 KB |
| authencesn.c | -rw-r--r-- | 23.4 KB |
| blkcipher.c | -rw-r--r-- | 19.4 KB |
| blowfish_common.c | -rw-r--r-- | 15.7 KB |
| blowfish_generic.c | -rw-r--r-- | 3.4 KB |
| camellia_generic.c | -rw-r--r-- | 34.9 KB |
| cast5_generic.c | -rw-r--r-- | 20.8 KB |
| cast6_generic.c | -rw-r--r-- | 9.5 KB |
| cast_common.c | -rw-r--r-- | 13.1 KB |
| cbc.c | -rw-r--r-- | 7.4 KB |
| ccm.c | -rw-r--r-- | 21.4 KB |
| chainiv.c | -rw-r--r-- | 8.5 KB |
| cipher.c | -rw-r--r-- | 3.3 KB |
| cmac.c | -rw-r--r-- | 7.5 KB |
| compress.c | -rw-r--r-- | 1.3 KB |
| crc32.c | -rw-r--r-- | 3.7 KB |
| crc32c.c | -rw-r--r-- | 4.3 KB |
| crct10dif_common.c | -rw-r--r-- | 3.6 KB |
| crct10dif_generic.c | -rw-r--r-- | 3.2 KB |
| cryptd.c | -rw-r--r-- | 24.9 KB |
| crypto_null.c | -rw-r--r-- | 4.4 KB |
| crypto_user.c | -rw-r--r-- | 12.3 KB |
| crypto_wq.c | -rw-r--r-- | 968 bytes |
| ctr.c | -rw-r--r-- | 12.3 KB |
| cts.c | -rw-r--r-- | 9.8 KB |
| deflate.c | -rw-r--r-- | 5.4 KB |
| des_generic.c | -rw-r--r-- | 35.3 KB |
| ecb.c | -rw-r--r-- | 4.9 KB |
| eseqiv.c | -rw-r--r-- | 6.5 KB |
| fcrypt.c | -rw-r--r-- | 18.0 KB |
| fips.c | -rw-r--r-- | 705 bytes |
| gcm.c | -rw-r--r-- | 36.5 KB |
| gf128mul.c | -rw-r--r-- | 13.2 KB |
| ghash-generic.c | -rw-r--r-- | 3.7 KB |
| hmac.c | -rw-r--r-- | 6.9 KB |
| internal.h | -rw-r--r-- | 4.1 KB |
| khazad.c | -rw-r--r-- | 51.8 KB |
| krng.c | -rw-r--r-- | 1.4 KB |
| lrw.c | -rw-r--r-- | 9.2 KB |
| lz4.c | -rw-r--r-- | 2.5 KB |
| lz4hc.c | -rw-r--r-- | 2.5 KB |
| lzo.c | -rw-r--r-- | 2.4 KB |
| md4.c | -rw-r--r-- | 6.2 KB |
| md5.c | -rw-r--r-- | 3.9 KB |
| michael_mic.c | -rw-r--r-- | 3.6 KB |
| pcbc.c | -rw-r--r-- | 7.7 KB |
| pcompress.c | -rw-r--r-- | 3.0 KB |
| pcrypt.c | -rw-r--r-- | 14.7 KB |
| proc.c | -rw-r--r-- | 3.7 KB |
| ripemd.h | -rw-r--r-- | 974 bytes |
| rmd128.c | -rw-r--r-- | 10.2 KB |
| rmd160.c | -rw-r--r-- | 12.6 KB |
| rmd256.c | -rw-r--r-- | 10.5 KB |
| rmd320.c | -rw-r--r-- | 13.1 KB |
| rng.c | -rw-r--r-- | 3.3 KB |
| salsa20_generic.c | -rw-r--r-- | 6.7 KB |
| scatterwalk.c | -rw-r--r-- | 3.3 KB |
| seed.c | -rw-r--r-- | 17.4 KB |
| seqiv.c | -rw-r--r-- | 8.5 KB |
| serpent_generic.c | -rw-r--r-- | 21.2 KB |
| sha1_generic.c | -rw-r--r-- | 3.5 KB |
| sha256_generic.c | -rw-r--r-- | 12.1 KB |
| sha512_generic.c | -rw-r--r-- | 8.7 KB |
| shash.c | -rw-r--r-- | 17.5 KB |
| tcrypt.c | -rw-r--r-- | 44.9 KB |
| tcrypt.h | -rw-r--r-- | 3.6 KB |
| tea.c | -rw-r--r-- | 6.6 KB |
| testmgr.c | -rw-r--r-- | 69.4 KB |
| testmgr.h | -rw-r--r-- | 965.5 KB |
| tgr192.c | -rw-r--r-- | 30.5 KB |
| twofish_common.c | -rw-r--r-- | 37.8 KB |
| twofish_generic.c | -rw-r--r-- | 6.2 KB |
| vmac.c | -rw-r--r-- | 18.9 KB |
| wp512.c | -rw-r--r-- | 59.7 KB |
| xcbc.c | -rw-r--r-- | 7.2 KB |
| xor.c | -rw-r--r-- | 4.0 KB |
| xts.c | -rw-r--r-- | 8.7 KB |
| zlib.c | -rw-r--r-- | 9.5 KB |
Computing file changes ...
