Gentle Reminder. Thanks Tony > -----Original Message----- > From: Tony K Nadackal [mailto:tony.kn@xxxxxxxxxxx] > Sent: Wednesday, December 17, 2014 11:55 AM > To: linux-media@xxxxxxxxxxxxxxx; linux-arm-kernel@xxxxxxxxxxxxxxxxxxx; linux- > samsung-soc@xxxxxxxxxxxxxxx > Cc: mchehab@xxxxxxxxxxxxxxx; j.anaszewski@xxxxxxxxxxx; > kgene@xxxxxxxxxx; k.debski@xxxxxxxxxxx; s.nawrocki@xxxxxxxxxxx; > bhushan.r@xxxxxxxxxxx; Tony K Nadackal > Subject: [PATCH] [media] s5p-jpeg: Fix crash in jpeg isr due to multiple interrupts. > > In case of corrupt images, multiple interrupts may occur due to different error > scenarios. > > Since we are removing the src and dest buffers in the first interrupt itself, crash > occurs in the second error interrupts. > > Disable the global interrupt before we start processing the interrupt avoid the > crash. > > Disable System interrupt in isr to avoid the crash below. > > Unable to handle kernel NULL pointer dereference at virtual address 000000c8 > pgd = ffffffc0007db000 [000000c8] *pgd=00000000fb006003, > *pud=00000000fb006003, *pmd=00000000fb007003, *pte=0060000011001707 > Internal error: Oops: 96000007 [#1] PREEMPT SMP Modules linked in: > CPU: 0 PID: 0 Comm: swapper/0 Not tainted 3.18.0-next-20141210+ #22 Hardware > name: Samsung Exynos7 Espresso board based on EXYNOS7 (DT) > task: ffffffc00075e5c0 ti: ffffffc00074c000 task.ti: ffffffc00074c000 PC is at > exynos4_jpeg_irq+0x30/0x15c LR is at exynos4_jpeg_irq+0x2c/0x15c pc : > [<ffffffc00040873c>] lr : [<ffffffc000408738>] pstate: 800001c5 sp : > ffffffc00074fc60 > x29: ffffffc00074fc60 x28: 0000004040000000 > x27: ffffffc000673928 x26: ffffffc000673940 > x25: ffffffc0007a030c x24: ffffffc0bb20a400 > x23: 0000000000000030 x22: ffffffc0ba56ba40 > x21: 0000000000000000 x20: 0000000000000000 > x19: ffffffc0ba56ba18 x18: 0000000000000000 > x17: 0000000000000000 x16: ffffffc00018b508 > x15: 0000000000000000 x14: 0000000000000000 > x13: 0098968000000000 x12: 0000000000989680 > x11: 0000000000000004 x10: 0101010101010101 > x9 : 00000020a285a9ea x8 : ffffffc0007af880 > x7 : ffffffc0bac001a8 x6 : ffffffc0bac00000 > x5 : 00000000fffffffa x4 : ffffffc00040870c > x3 : 0000000000000003 x2 : 0000000000010003 > x1 : 0000000000010002 x0 : 0000000000000000 > > Process swapper/0 (pid: 0, stack limit = 0xffffffc00074c058) > Stack: (0xffffffc00074fc60 to 0xffffffc000750000) > fc60: 0074fca0 ffffffc0 000e4508 ffffffc0 bb225300 ffffffc0 bb20a494 ffffffc0 > fc80: 00000000 00000000 00000000 00000000 00000030 00000000 000f8c6c ffffffc0 > fca0: 0074fd00 ffffffc0 000e4644 ffffffc0 bb20a400 ffffffc0 bb20a494 ffffffc0 > fcc0: 00776a00 ffffffc0 00670da8 ffffffc0 00000000 00000000 00000001 00000000 > fce0: bb008000 ffffffc0 407db000 00000000 00081230 ffffffc0 000e4638 ffffffc0 > fd00: 0074fd40 ffffffc0 000e7338 ffffffc0 bb20a400 ffffffc0 bb20a494 ffffffc0 > fd20: 00776a00 ffffffc0 000e7280 ffffffc0 bb225300 ffffffc0 000e72e0 ffffffc0 > fd40: 0074fd70 ffffffc0 000e3d60 ffffffc0 00000030 00000000 00743000 ffffffc0 > fd60: 0066e000 ffffffc0 006c2000 ffffffc0 0074fd90 ffffffc0 000e3e90 ffffffc0 > fd80: 007437c8 ffffffc0 000e3e6c ffffffc0 0074fdf0 ffffffc0 00082404 ffffffc0 > fda0: 0074fe20 ffffffc0 0075a000 ffffffc0 0000200c ffffff80 00002010 ffffff80 > fdc0: 60000145 00000000 00672cc8 ffffffc0 407d9000 00000000 befb9b40 ffffffc0 > fde0: 0074fe20 ffffffc0 000001d2 00000000 0074ff40 ffffffc0 00085da8 ffffffc0 > fe00: 00758584 ffffffc0 0052c000 ffffffc0 0074ff40 ffffffc0 00087114 ffffffc0 > fe20: 00000000 00000000 0074ff50 ffffffc0 0067d760 ffffffc0 befb9adc ffffffc0 > fe40: 00000001 00000000 d4414200 00000020 d6a39c00 00000020 007a6a18 ffffffc0 > fe60: 0075eb00 ffffffc0 0074fd60 ffffffc0 ffffc185 00000000 00000020 00000000 > fe80: 0052d340 ffffffc0 00000030 00000000 fffffffe 0fffffff 00000000 00000000 > fea0: 0018b508 ffffffc0 00000000 00000000 00000000 00000000 00758584 ffffffc0 > fec0: 0052c000 ffffffc0 006c24e8 ffffffc0 007a030a ffffffc0 00000001 00000000 > fee0: 00672cc8 ffffffc0 407d9000 00000000 407db000 00000000 00081230 ffffffc0 > ff00: 40000000 00000040 0074ff40 ffffffc0 00087110 ffffffc0 0074ff40 ffffffc0 > ff20: 00087114 ffffffc0 60000145 00000000 00758584 ffffffc0 0052c000 ffffffc0 > ff40: 0074ff50 ffffffc0 000db568 ffffffc0 0074ff90 ffffffc0 00515fdc ffffffc0 > ff60: 00758000 ffffffc0 007a3000 ffffffc0 007a3000 ffffffc0 befc8940 ffffffc0 > ff80: 40760000 00000000 40000000 00000000 0074ffb0 ffffffc0 006ff998 ffffffc0 > ffa0: 00000002 00000000 006ff988 ffffffc0 00000000 00000000 400826c0 00000000 > ffc0: 8f03a688 00000000 00000e11 00000000 48000000 00000000 410fd030 > 00000000 > ffe0: 0072c250 ffffffc0 00000000 00000000 00000000 00000000 00000000 00000000 > Call trace: > [<ffffffc00040873c>] exynos4_jpeg_irq+0x30/0x15c [<ffffffc0000e4504>] > handle_irq_event_percpu+0x6c/0x160 > [<ffffffc0000e4640>] handle_irq_event+0x48/0x78 [<ffffffc0000e7334>] > handle_fasteoi_irq+0xe0/0x198 [<ffffffc0000e3d5c>] > generic_handle_irq+0x24/0x40 [<ffffffc0000e3e8c>] > __handle_domain_irq+0x80/0xf0 [<ffffffc000082400>] gic_handle_irq+0x30/0x80 > Exception stack(0xffffffc00074fe00 to 0xffffffc00074ff20) > fe00: 00758584 ffffffc0 0052c000 ffffffc0 0074ff40 ffffffc0 00087114 ffffffc0 > fe20: 00000000 00000000 0074ff50 ffffffc0 0067d760 ffffffc0 befb9adc ffffffc0 > fe40: 00000001 00000000 d4414200 00000020 d6a39c00 00000020 007a6a18 ffffffc0 > fe60: 0075eb00 ffffffc0 0074fd60 ffffffc0 ffffc185 00000000 00000020 00000000 > fe80: 0052d340 ffffffc0 00000030 00000000 fffffffe 0fffffff 00000000 00000000 > fea0: 0018b508 ffffffc0 00000000 00000000 00000000 00000000 00758584 ffffffc0 > fec0: 0052c000 ffffffc0 006c24e8 ffffffc0 007a030a ffffffc0 00000001 00000000 > fee0: 00672cc8 ffffffc0 407d9000 00000000 407db000 00000000 00081230 ffffffc0 > ff00: 40000000 00000040 0074ff40 ffffffc0 00087110 ffffffc0 0074ff40 ffffffc0 > [<ffffffc000085da4>] el1_irq+0x64/0xd8 [<ffffffc0000db564>] > cpu_startup_entry+0x118/0x168 [<ffffffc000515fd8>] rest_init+0x7c/0x88 > [<ffffffc0006ff994>] start_kernel+0x3a8/0x3bc > Code: 94045c34 f9406e60 97ffdc74 aa0003f4 (f9406400) ---[ end trace > fa6dc0ea2efad21f ]--- Kernel panic - not syncing: Fatal exception in interrupt ---[ > end Kernel panic - not syncing: Fatal exception in interrupt > > Signed-off-by: Tony K Nadackal <tony.kn@xxxxxxxxxxx> > --- > This patch is created and tested on top of linux-next-20141210. > It can be cleanly applied on media-next and kgene/for-next. > > drivers/media/platform/s5p-jpeg/jpeg-core.c | 3 +++ > 1 file changed, 3 insertions(+) > > diff --git a/drivers/media/platform/s5p-jpeg/jpeg-core.c > b/drivers/media/platform/s5p-jpeg/jpeg-core.c > index 12f7452..91bd3e6 100644 > --- a/drivers/media/platform/s5p-jpeg/jpeg-core.c > +++ b/drivers/media/platform/s5p-jpeg/jpeg-core.c > @@ -1933,6 +1933,7 @@ static void exynos4_jpeg_device_run(void *priv) > exynos4_jpeg_set_dec_bitstream_size(jpeg->regs, > bitstream_size); > } > > + exynos4_jpeg_set_sys_int_enable(jpeg->regs, 1); > exynos4_jpeg_set_enc_dec_mode(jpeg->regs, ctx->mode); > > spin_unlock_irqrestore(&ctx->jpeg->slock, flags); @@ -2313,6 +2314,8 > @@ static irqreturn_t exynos4_jpeg_irq(int irq, void *priv) > > spin_lock(&jpeg->slock); > > + exynos4_jpeg_set_sys_int_enable(jpeg->regs, 0); > + > curr_ctx = v4l2_m2m_get_curr_priv(jpeg->m2m_dev); > > src_vb = v4l2_m2m_src_buf_remove(curr_ctx->fh.m2m_ctx); > -- > 2.2.0 -- To unsubscribe from this list: send the line "unsubscribe linux-samsung-soc" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
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