2015-10-02 17:14 GMT+02:00 Philipp Zabel <p.za...@pengutronix.de>: > Am Freitag, den 02.10.2015, 16:59 +0200 schrieb Jean-Michel Hautbois: > [...] >> Oups, forgot to paste the kernel output : >> >> [ 324.390498] ------------[ cut here ]------------ >> [ 324.395163] WARNING: CPU: 1 PID: 1434 at >> /run/media/jm/SSD_JM/Projets/git_mirrors/linux-2.6-imx/kernel/locking/lockdep.c:3382 >> lock_release+0x2b0/0x6d4() >> [ 324.408821] DEBUG_LOCKS_WARN_ON(depth <= 0) >> [ 324.412840] Modules linked in: >> [ 324.415917] ath9k_htc ath9k_common ath9k_hw ath snd_soc_adv76xx >> snd_soc_vbx3_fpga vbx3_fpga_vswitch smsc95xx usbnet mx6_camera(C) >> imx_ipu_scaler imx_ipu vbx3_fpga adv7604 snd_soc_sgtl5000 lmh0395 >> snd_soc_vbx3sdi vbx3_sdi fbcon bitblit softcursor font >> [ 324.437279] CPU: 1 PID: 1434 Comm: video-h264:src Tainted: G >> C 4.2.0 #106 >> [ 324.445204] Hardware name: Freescale i.MX6 Quad/DualLite (Device Tree) >> [ 324.451741] Backtrace: >> [ 324.454226] [<8001524c>] (dump_backtrace) from [<80015494>] >> (show_stack+0x20/0x24) >> [ 324.461804] r6:80fb1a60 r5:00000000 r4:00000000 r3:00000000 >> [ 324.467562] [<80015474>] (show_stack) from [<808fdd6c>] >> (dump_stack+0x98/0xc8) >> [ 324.474803] [<808fdcd4>] (dump_stack) from [<800304f0>] >> (warn_slowpath_common+0x8c/0xc8) >> [ 324.482902] r6:8007ffbc r5:00000009 r4:a4eafab8 r3:00000001 >> [ 324.488652] [<80030464>] (warn_slowpath_common) from [<8003056c>] >> (warn_slowpath_fmt+0x40/0x48) >> [ 324.497359] r8:80fb1b60 r7:80904b3c r6:a636c9c0 r5:a6c9f368 r4:80c1e150 >> [ 324.504168] [<80030530>] (warn_slowpath_fmt) from [<8007ffbc>] >> (lock_release+0x2b0/0x6d4) >> [ 324.512353] r3:80c246fc r2:80c1e150 >> [ 324.515971] r4:a6c9f32c >> [ 324.518541] [<8007fd0c>] (lock_release) from [<80904a34>] >> (__mutex_unlock_slowpath+0xc4/0x1b4) >> [ 324.527160] r10:00000000 r9:a4531281 r8:00000000 r7:8185231c >> r6:80904b3c r5:600f0013 >> [ 324.535091] r4:a6c9f32c >> [ 324.537657] [<80904970>] (__mutex_unlock_slowpath) from >> [<80904b3c>] (mutex_unlock+0x18/0x1c) >> [ 324.546189] r7:00000000 r6:a4eafcd4 r5:00000041 r4:a5e1b000 >> [ 324.551945] [<80904b24>] (mutex_unlock) from [<80602fe8>] >> (v4l2_m2m_fop_poll+0x5c/0x64) >> [ 324.559970] [<80602f8c>] (v4l2_m2m_fop_poll) from [<805ec694>] >> (v4l2_poll+0x6c/0xa0) >> [ 324.567722] r6:a4eafbec r5:00000000 r4:a6c9e090 r3:80602f8c >> [ 324.573481] [<805ec628>] (v4l2_poll) from [<80174d04>] >> (do_sys_poll+0x230/0x4d0) >> [ 324.580886] r5:00000000 r4:a4eafbe4 >> [ 324.584515] [<80174ad4>] (do_sys_poll) from [<801752e0>] >> (SyS_ppoll+0x1d4/0x1fc) >> [ 324.591917] r10:00000000 r9:a4eae000 r8:00000000 r7:00000000 >> r6:74a14790 r5:00000002 >> [ 324.599846] r4:00000000 >> [ 324.602419] [<8017510c>] (SyS_ppoll) from [<80010b00>] >> (ret_fast_syscall+0x0/0x54) >> [ 324.609996] r8:80010ce4 r7:00000150 r6:74a14790 r5:00000002 r4:00000008 >> [ 324.616798] ---[ end trace 0012dc3dcc1c27d5 ]--- > > Hm, that looks very similar to the issue Zahari's "[media] m2m: fix bad > unlock balance" is supposed to fix: > https://patchwork.linuxtv.org/patch/30906/ > > regards > Philipp > Thanks for that ! I am on 4.2, not media-tree, this is why I didn't have it.
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