Hi Francis,
Your email program is still messing up things, the patch was sent as a
multipart message. Use git-send-email tool or something similar if possible.
Also, there are at least two checkpatch issues (run
scripts/checkpatch.pl -strict <patch>), in addition to the UTF-8
formatted message content itself.
WARNING: email address 'Francis Le Bourse<francis.lebourse@xxxxxx>
---' might be better
as 'Francis Le Bourse <francis.lebourse@xxxxxx>
---'
#144:
Signed-off-by: Francis Le Bourse<francis.lebourse@xxxxxx>
---
CHECK: Alignment should match open parenthesis
#157: FILE: drivers/crypto/omap-aes.c:101:
+static void omap_aes_read_n(struct omap_aes_dev *dd, u32 offset,
+ u32 *value, int count)
I have a couple of additional comments, but can't add them as the patch
content is an attachment (like, I would not add the WARN_ON.) Overall,
the issue you have found is a legitimate problem, and should be fixed.
-Tero
On 22/03/18 16:55, Francis Le Bourse wrote:
Hello,
In omap_crypto_cleanup(),:
if (orig && (flags & OMAP_CRYPTO_COPY_MASK))
scatterwalk_map_and_copy(buf, orig, offset, len, 1);
implies that scatterwalk_map_and_copy() is called if flag is set to
OMAP_CRYPTO_SG_COPIED.
If the output buffer crosses a page boundary, the second and subsequent
pages are overwritten.
The test should be : if(orig && (flags & OMAP_CRYPTO_DATA_COPIED))
The variable buf is always assigned but not used if flags ==
OMAP_CRYPTO_SG_COPIED.
In:
buf = sg_virt(sg);
sg_page(sg) can be NULL, leading to a kernel crash:
[ 37.624352] Unable to handle kernel NULL pointer dereference at
virtual address 00000000
[ 37.632502] pgd = ec150000
[ 37.635238] [00000000] *pgd=00000000
[ 37.638842] Internal error: Oops: 5 [#1] SMP ARM
Entering kdb (current=0xec173080, pid 1125) on processor 0 Oops:
(null)
due to oops @ 0xc02c04f4
CPU: 0 PID: 1125 Comm: ping Tainted: G C 4.14.13-ti-r25 #62
Hardware name: Generic DRA74X (Flattened Device Tree)
task: ec173080 task.stack: ec0a8000
PC is at pa> <ge_address+0x18/0xf4
LR is at omap_crypto_cleanup+0x44/0x110
pc : [<c02c04f4>] lr : [<c0b33b78>] psr: 40080113
sp : ec0a9cf8 ip : ec0a9d20 fp : ec0a9d1c
r10: 00000000 r9 : ec1918c0 r8 : 00000100
r7 : 0000000a r6 : ec0c6780 r5 : 00000000 r4 : 00000002
r3 : 00000100 r2 : 00000000 r1 : ec1918c0 r0 : 00000000
Flags: nZcv IRQs on FIQs on Mode SVC_32 ISA ARM Segment none
Control: 10c5387d Table: ac15006a DAC: 00000051
CPU: 0 PID: 1125 Comm: ping Tainted: G C 4.14.13-ti-r25 #62
Hardware name: Generic DRA74X (Flattened Device Tree)
[<c0d87df8>] (__dabt_svc) from [<c02c04f4>] (page_address+0x18/0xf4)
[<c02c04f4>] (page_address) from [<c0b33b78>]
(omap_crypto_cleanup+0x44/0x110)
[<c0b33b78>] (omap_crypto_cleanup) from [<c0b371f4>]
(omap_aes_done_task+0x1a0/0x440)
[<c0b371f4>] (omap_aes_done_task) from [<c0149388>]
(tasklet_action+0x70/0x104)
[<c0149388>] (tasklet_action) from [<c0101704>]
(__do_softirq+0x124/0x378)
[<c0101704>] (__do_softirq) from [<c0148d68>] (irq_exit+0xe8/0x150)
[<c0148d68>] (irq_exit) from [<c01acd5c>]
(__handle_domain_irq+0x70/0xc4)
[<c01acd5c>] (__handle_domain_irq) from [<c01015a0>]
(gic_handle_irq+0x4c/0x88)
[<c01015a0>] (gic_handle_irq) from [<c0d87e8c>] (__irq_svc+0x6c/0x90)
Here it is simpler to reorder the code to fix the issues.
--
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