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Message-Id: <200802211103.04762.bonganilinux@mweb.co.za> Date: Thu, 21 Feb 2008 11:03:04 +0200 From: Bongani Hlope <bonganilinux@...b.co.za> To: Mauro Carvalho Chehab <mchehab@...radead.org> Cc: video4linux-list@...hat.com, linux-kernel@...r.kernel.org, Ingo Molnar <mingo@...e.hu> Subject: Re: 2.6.25-rc[12] Video4Linux Bttv Regression I've enabled MUTEX and SPINLOCK DEBUG, this is what I get ------------[ cut here ]------------ WARNING: at /home/bongani/kernel/git/linux-2.6/kernel/mutex.c:134 mutex_lock_nested+0xc0/0x2a3() Modules linked in: snd_seq_dummy snd_seq_oss snd_seq_midi_event snd_seq binfmt_misc loop nls_cp437 vfat fat nls_iso8859_1 ntfs dm_mod thermal processor fan container button pcspkr snd_pcm_oss snd_mixer_oss tuner snd_emu10k1 tea5767 tda8290 tuner_xc2028 tda9887 tuner_simple snd_rawmidi mt20xx snd_ac97_codec tea5761 ac97_bus snd_pcm bttv snd_seq_device snd_timer firewire_ohci videodev snd_page_alloc firewire_core v4l1_compat snd_util_mem uhci_hcd ehci_hcd ir_common snd_hwdep ide_cd_mod compat_ioctl32 crc_itu_t usbcore snd sr_mod v4l2_common ohci1394 videobuf_dma_sg cdrom ieee1394 i2c_viapro videobuf_core emu10k1_gp tg3 btcx_risc gameport soundcore tveeprom sg evdev Pid: 4563, comm: radio Not tainted 2.6.25-rc2-00015-g1309d4e #36 kernel: Call Trace: [<ffffffff802324a3>] warn_on_slowpath+0x58/0x6b [<ffffffff80211799>] ? native_sched_clock+0x4d/0x6c [<ffffffff8024eb31>] ? get_lock_stats+0x16/0x49 [<ffffffff8024eb72>] ? put_lock_stats+0xe/0x27 [<ffffffff8024ebe1>] ? lock_release_holdtime+0x56/0x5e [<ffffffff8039a269>] ? ide_dma_intr+0x0/0x8f [<ffffffff80211799>] ? native_sched_clock+0x4d/0x6c [<ffffffff8046482e>] mutex_lock_nested+0xc0/0x2a3 [<ffffffff88133f3f>] ? :bttv:radio_g_tuner+0x42/0xa8 [<ffffffff802203de>] ? virt_to_highmap+0x9/0x18 [<ffffffff80220566>] ? __change_page_attr+0x179/0x697 [<ffffffff88133f3f>] :bttv:radio_g_tuner+0x42/0xa8 [<ffffffff88118f83>] :videodev:__video_do_ioctl+0x2a6e/0x2e25 [<ffffffff80220af0>] ? __change_page_attr_set_clr+0x6c/0xc0 [<ffffffff80220d2d>] ? kernel_map_pages+0x130/0x13b [<ffffffff8810103c>] :v4l1_compat:v4l_compat_translate_ioctl+0xea9/0x1af5 [<ffffffff88116515>] ? :videodev:__video_do_ioctl+0x0/0x2e25 [<ffffffff802203de>] ? virt_to_highmap+0x9/0x18 [<ffffffff80220566>] ? __change_page_attr+0x179/0x697 [<ffffffff802afb2e>] ? __find_get_block+0x171/0x183 [<ffffffff802203de>] ? virt_to_highmap+0x9/0x18 [<ffffffff80220566>] ? __change_page_attr+0x179/0x697 [<ffffffff80220af0>] ? __change_page_attr_set_clr+0x6c/0xc0 [<ffffffff8026895f>] ? mempool_alloc_slab+0x11/0x13 [<ffffffff80211799>] ? native_sched_clock+0x4d/0x6c [<ffffffff80250dfb>] ? mark_held_locks+0x59/0x75 [<ffffffff804659dd>] ? trace_hardirqs_on_thunk+0x35/0x3a [<ffffffff80250fa5>] ? trace_hardirqs_on+0xf9/0x124 [<ffffffff804659dd>] ? trace_hardirqs_on_thunk+0x35/0x3a [<ffffffff80211799>] ? native_sched_clock+0x4d/0x6c [<ffffffff8020b9c3>] ? restore_args+0x0/0x3d [<ffffffff8031bbe7>] ? __delay+0x33/0x4f last message repeated 2 times [<ffffffff80211799>] ? native_sched_clock+0x4d/0x6c [<ffffffff8024eb31>] ? get_lock_stats+0x16/0x49 [<ffffffff8024eb72>] ? put_lock_stats+0xe/0x27 [<ffffffff80250dfb>] ? mark_held_locks+0x59/0x75 [<ffffffff80464740>] ? __mutex_unlock_slowpath+0xf9/0x11c [<ffffffff80250fa5>] ? trace_hardirqs_on+0xf9/0x124 [<ffffffff80211799>] ? native_sched_clock+0x4d/0x6c [<ffffffff802520d7>] ? __lock_acquire+0xc93/0xcb4 [<ffffffff80211799>] ? native_sched_clock+0x4d/0x6c [<ffffffff8024eb31>] ? get_lock_stats+0x16/0x49 [<ffffffff8024eb72>] ? put_lock_stats+0xe/0x27 [<ffffffff8024ebe1>] ? lock_release_holdtime+0x56/0x5e [<ffffffff80211799>] ? native_sched_clock+0x4d/0x6c [<ffffffff802520d7>] ? __lock_acquire+0xc93/0xcb4 [<ffffffff80211799>] ? native_sched_clock+0x4d/0x6c [<ffffffff8024eb31>] ? get_lock_stats+0x16/0x49 [<ffffffff8024eb72>] ? put_lock_stats+0xe/0x27 [<ffffffff8811664e>] :videodev:__video_do_ioctl+0x139/0x2e25 [<ffffffff802520d7>] ? __lock_acquire+0xc93/0xcb4 [<ffffffff80211799>] ? native_sched_clock+0x4d/0x6c [<ffffffff8024eb72>] ? put_lock_stats+0xe/0x27 [<ffffffff8024ebe1>] ? lock_release_holdtime+0x56/0x5e [<ffffffff80211799>] ? native_sched_clock+0x4d/0x6c [<ffffffff881196b1>] :videodev:video_ioctl2+0x1b8/0x259 [<ffffffff8046668b>] ? _spin_unlock_irqrestore+0x3f/0x68 [<ffffffff80250fa5>] ? trace_hardirqs_on+0xf9/0x124 [<ffffffff8029b22e>] vfs_ioctl+0x5e/0x77 [<ffffffff8029b4a2>] do_vfs_ioctl+0x25b/0x270 [<ffffffff804659dd>] ? trace_hardirqs_on_thunk+0x35/0x3a [<ffffffff8029b4f9>] sys_ioctl+0x42/0x65 [<ffffffff8020b36b>] system_call_after_swapgs+0x7b/0x80 kernel: ---[ end trace bb0fc13470ac3add ]--- BUG: unable to handle kernel NULL pointer dereference at 0000000000000000 IP: [<ffffffff8031f5d4>] __list_add+0x2e/0x5b PGD 68e90067 PUD 6833a067 PMD 0 Oops: 0000 [1] PREEMPT SMP DEBUG_PAGEALLOC CPU 1 Modules linked in: snd_seq_dummy snd_seq_oss snd_seq_midi_event snd_seq binfmt_misc loop nls_cp437 vfat fat nls_iso8859_1 ntfs dm_mod thermal processor fan container button pcspkr snd_pcm_oss snd_mixer_oss tuner snd_emu10k1 tea5767 tda8290 tuner_xc2028 tda9887 tuner_simple snd_rawmidi mt20xx snd_ac97_codec tea5761 ac97_bus snd_pcm bttv snd_seq_device snd_timer firewire_ohci videodev snd_page_alloc firewire_core v4l1_compat snd_util_mem uhci_hcd ehci_hcd ir_common snd_hwdep ide_cd_mod compat_ioctl32 crc_itu_t usbcore snd sr_mod v4l2_common ohci1394 videobuf_dma_sg cdrom ieee1394 i2c_viapro videobuf_core emu10k1_gp tg3 btcx_risc gameport soundcore tveeprom sg evdev Pid: 4563, comm: radio Not tainted 2.6.25-rc2-00015-g1309d4e #36 RIP: 0010:[<ffffffff8031f5d4>] [<ffffffff8031f5d4>] __list_add+0x2e/0x5b RSP: 0018:ffff81005231d5b8 EFLAGS: 00010046 RAX: 0000000000000000 RBX: ffffffffffffffff RCX: 0000000000000000 RDX: ffff81007f2bc378 RSI: ffff81007f2bc378 RDI: ffff81005231d5d8 RBP: ffff81005231d5b8 R08: 0000000000000000 R09: 0000000000000001 R10: ffff81005231d2d8 R11: 0000000000007420 R12: ffff81007f2bc338 R13: 0000000000000246 R14: ffff81007f2bc3a0 R15: ffff81005da847c0 FS: 00007f3c348aa6f0(0000) GS:ffff81007f0554c8(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000000 CR3: 0000000075c6e000 CR4: 00000000000006e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400 Process radio (pid: 4563, threadinfo ffff81005231c000, task ffff81005da847c0) Stack: ffff81005231d638 ffffffff8046487f ffffffff88133f3f 000000005da84808 ffff81005231d5d8 ffff81005231d5d8 1111111111111111 ffff81007f2bc338 ffff81005231d5d8 ffff81006002d000 ffff81005231d6e8 ffff81005231daa8 Call Trace: [<ffffffff8046487f>] mutex_lock_nested+0x111/0x2a3 [<ffffffff88133f3f>] ? :bttv:radio_g_tuner+0x42/0xa8 [<ffffffff88133f3f>] :bttv:radio_g_tuner+0x42/0xa8 [<ffffffff88118f83>] :videodev:__video_do_ioctl+0x2a6e/0x2e25 [<ffffffff80220af0>] ? __change_page_attr_set_clr+0x6c/0xc0 [<ffffffff80220d2d>] ? kernel_map_pages+0x130/0x13b [<ffffffff8810103c>] :v4l1_compat:v4l_compat_translate_ioctl+0xea9/0x1af5 [<ffffffff88116515>] ? :videodev:__video_do_ioctl+0x0/0x2e25 [<ffffffff802203de>] ? virt_to_highmap+0x9/0x18 [<ffffffff80220566>] ? __change_page_attr+0x179/0x697 [<ffffffff802afb2e>] ? __find_get_block+0x171/0x183 [<ffffffff802203de>] ? virt_to_highmap+0x9/0x18 [<ffffffff80220566>] ? __change_page_attr+0x179/0x697 [<ffffffff80220af0>] ? __change_page_attr_set_clr+0x6c/0xc0 [<ffffffff8026895f>] ? mempool_alloc_slab+0x11/0x13 [<ffffffff80211799>] ? native_sched_clock+0x4d/0x6c [<ffffffff80250dfb>] ? mark_held_locks+0x59/0x75 [<ffffffff804659dd>] ? trace_hardirqs_on_thunk+0x35/0x3a [<ffffffff80250fa5>] ? trace_hardirqs_on+0xf9/0x124 [<ffffffff804659dd>] ? trace_hardirqs_on_thunk+0x35/0x3a [<ffffffff80211799>] ? native_sched_clock+0x4d/0x6c [<ffffffff8020b9c3>] ? restore_args+0x0/0x3d [<ffffffff8031bbe7>] ? __delay+0x33/0x4f last message repeated 2 times [<ffffffff80211799>] ? native_sched_clock+0x4d/0x6c [<ffffffff8024eb31>] ? get_lock_stats+0x16/0x49 [<ffffffff8024eb72>] ? put_lock_stats+0xe/0x27 [<ffffffff80250dfb>] ? mark_held_locks+0x59/0x75 [<ffffffff80464740>] ? __mutex_unlock_slowpath+0xf9/0x11c [<ffffffff80250fa5>] ? trace_hardirqs_on+0xf9/0x124 [<ffffffff80211799>] ? native_sched_clock+0x4d/0x6c [<ffffffff802520d7>] ? __lock_acquire+0xc93/0xcb4 [<ffffffff80211799>] ? native_sched_clock+0x4d/0x6c [<ffffffff8024eb31>] ? get_lock_stats+0x16/0x49 [<ffffffff8024eb72>] ? put_lock_stats+0xe/0x27 [<ffffffff8024ebe1>] ? lock_release_holdtime+0x56/0x5e [<ffffffff80211799>] ? native_sched_clock+0x4d/0x6c [<ffffffff802520d7>] ? __lock_acquire+0xc93/0xcb4 [<ffffffff80211799>] ? native_sched_clock+0x4d/0x6c [<ffffffff8024eb31>] ? get_lock_stats+0x16/0x49 [<ffffffff8024eb72>] ? put_lock_stats+0xe/0x27 [<ffffffff8811664e>] :videodev:__video_do_ioctl+0x139/0x2e25 [<ffffffff802520d7>] ? __lock_acquire+0xc93/0xcb4 [<ffffffff80211799>] ? native_sched_clock+0x4d/0x6c [<ffffffff8024eb72>] ? put_lock_stats+0xe/0x27 [<ffffffff8024ebe1>] ? lock_release_holdtime+0x56/0x5e [<ffffffff80211799>] ? native_sched_clock+0x4d/0x6c [<ffffffff881196b1>] :videodev:video_ioctl2+0x1b8/0x259 [<ffffffff8046668b>] ? _spin_unlock_irqrestore+0x3f/0x68 [<ffffffff80250fa5>] ? trace_hardirqs_on+0xf9/0x124 [<ffffffff8029b22e>] vfs_ioctl+0x5e/0x77 [<ffffffff8029b4a2>] do_vfs_ioctl+0x25b/0x270 [<ffffffff804659dd>] ? trace_hardirqs_on_thunk+0x35/0x3a [<ffffffff8029b4f9>] sys_ioctl+0x42/0x65 [<ffffffff8020b36b>] system_call_after_swapgs+0x7b/0x80 kernel: kernel: Code: 42 08 49 89 f0 48 89 d6 48 89 e5 4c 39 c0 74 1b 48 89 d1 4c 89 c6 48 89 c2 48 c7 c7 b4 ed 54 80 31 c0 e8 6d 3d f1 ff 0f 0b eb fe <48> 8b 10 48 39 f2 74 15 48 89 c1 48 c7 c7 04 ee 54 80 31 c0 e8 RIP [<ffffffff8031f5d4>] __list_add+0x2e/0x5b RSP <ffff81005231d5b8> CR2: 0000000000000000 ---[ end trace bb0fc13470ac3add ]--- BUG: sleeping function called from invalid context at /home/bongani/kernel/git/linux-2.6/kernel/rwsem.c:21 in_atomic():0, irqs_disabled():1 INFO: lockdep is turned off. irq event stamp: 7544 hardirqs last enabled at (7543): [<ffffffff804659dd>] trace_hardirqs_on_thunk+0x35/0x3a hardirqs last disabled at (7544): [<ffffffff804647ea>] mutex_lock_nested+0x7c/0x2a3 softirqs last enabled at (7516): [<ffffffff802377c7>] __do_softirq+0xbf/0xc8 softirqs last disabled at (7511): [<ffffffff8020c65c>] call_softirq+0x1c/0x28 Pid: 4563, comm: radio Tainted: G D 2.6.25-rc2-00015-g1309d4e #36 kernel: Call Trace: [<ffffffff8024e6bf>] ? print_irqtrace_events+0x110/0x114 [<ffffffff80229c52>] __might_sleep+0xda/0xdc [<ffffffff80464ecf>] down_read+0x20/0x68 [<ffffffff802604ed>] acct_collect+0x42/0x1a9 [<ffffffff80235bfe>] do_exit+0x20a/0x6f3 [<ffffffff8036be33>] ? do_unblank_screen+0x29/0x125 [<ffffffff80466eae>] oops_begin+0x0/0x95 [<ffffffff80468d15>] do_page_fault+0x708/0x7bf [<ffffffff804669ad>] error_exit+0x0/0xa9 [<ffffffff8031f5d4>] ? __list_add+0x2e/0x5b [<ffffffff8046487f>] ? mutex_lock_nested+0x111/0x2a3 [<ffffffff88133f3f>] ? :bttv:radio_g_tuner+0x42/0xa8 [<ffffffff88133f3f>] ? :bttv:radio_g_tuner+0x42/0xa8 [<ffffffff88118f83>] ? :videodev:__video_do_ioctl+0x2a6e/0x2e25 [<ffffffff80220af0>] ? __change_page_attr_set_clr+0x6c/0xc0 [<ffffffff80220d2d>] ? kernel_map_pages+0x130/0x13b [<ffffffff8810103c>] ? :v4l1_compat:v4l_compat_translate_ioctl+0xea9/0x1af5 [<ffffffff88116515>] ? :videodev:__video_do_ioctl+0x0/0x2e25 [<ffffffff802203de>] ? virt_to_highmap+0x9/0x18 [<ffffffff80220566>] ? __change_page_attr+0x179/0x697 [<ffffffff802afb2e>] ? __find_get_block+0x171/0x183 [<ffffffff802203de>] ? virt_to_highmap+0x9/0x18 [<ffffffff80220566>] ? __change_page_attr+0x179/0x697 [<ffffffff80220af0>] ? __change_page_attr_set_clr+0x6c/0xc0 [<ffffffff8026895f>] ? mempool_alloc_slab+0x11/0x13 [<ffffffff80211799>] ? native_sched_clock+0x4d/0x6c [<ffffffff80250dfb>] ? mark_held_locks+0x59/0x75 [<ffffffff804659dd>] ? trace_hardirqs_on_thunk+0x35/0x3a [<ffffffff80250fa5>] ? trace_hardirqs_on+0xf9/0x124 [<ffffffff804659dd>] ? trace_hardirqs_on_thunk+0x35/0x3a [<ffffffff80211799>] ? native_sched_clock+0x4d/0x6c [<ffffffff8020b9c3>] ? restore_args+0x0/0x3d [<ffffffff8031bbe7>] ? __delay+0x33/0x4f last message repeated 2 times [<ffffffff80211799>] ? native_sched_clock+0x4d/0x6c [<ffffffff8024eb31>] ? get_lock_stats+0x16/0x49 [<ffffffff8024eb72>] ? put_lock_stats+0xe/0x27 [<ffffffff80250dfb>] ? mark_held_locks+0x59/0x75 [<ffffffff80464740>] ? __mutex_unlock_slowpath+0xf9/0x11c [<ffffffff80250fa5>] ? trace_hardirqs_on+0xf9/0x124 [<ffffffff80211799>] ? native_sched_clock+0x4d/0x6c [<ffffffff802520d7>] ? __lock_acquire+0xc93/0xcb4 [<ffffffff80211799>] ? native_sched_clock+0x4d/0x6c [<ffffffff8024eb31>] ? get_lock_stats+0x16/0x49 [<ffffffff8024eb72>] ? put_lock_stats+0xe/0x27 [<ffffffff8024ebe1>] ? lock_release_holdtime+0x56/0x5e [<ffffffff80211799>] ? native_sched_clock+0x4d/0x6c [<ffffffff802520d7>] ? __lock_acquire+0xc93/0xcb4 [<ffffffff80211799>] ? native_sched_clock+0x4d/0x6c [<ffffffff8024eb31>] ? get_lock_stats+0x16/0x49 [<ffffffff8024eb72>] ? put_lock_stats+0xe/0x27 [<ffffffff8811664e>] ? :videodev:__video_do_ioctl+0x139/0x2e25 [<ffffffff802520d7>] ? __lock_acquire+0xc93/0xcb4 [<ffffffff80211799>] ? native_sched_clock+0x4d/0x6c [<ffffffff8024eb72>] ? put_lock_stats+0xe/0x27 [<ffffffff8024ebe1>] ? lock_release_holdtime+0x56/0x5e [<ffffffff80211799>] ? native_sched_clock+0x4d/0x6c [<ffffffff881196b1>] ? :videodev:video_ioctl2+0x1b8/0x259 [<ffffffff8046668b>] ? _spin_unlock_irqrestore+0x3f/0x68 [<ffffffff80250fa5>] ? trace_hardirqs_on+0xf9/0x124 [<ffffffff8029b22e>] ? vfs_ioctl+0x5e/0x77 [<ffffffff8029b4a2>] ? do_vfs_ioctl+0x25b/0x270 [<ffffffff804659dd>] ? trace_hardirqs_on_thunk+0x35/0x3a [<ffffffff8029b4f9>] ? sys_ioctl+0x42/0x65 [<ffffffff8020b36b>] ? system_call_after_swapgs+0x7b/0x80 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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