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Date: Wed, 30 Mar 2016 11:36:31 +0200 From: Sedat Dilek <sedat.dilek@...il.com> To: Ingo Molnar <mingo@...nel.org> Cc: Peter Zijlstra <peterz@...radead.org>, Alfredo Alvarez Fernandez <alfredoalvarezfernandez@...il.com>, Linus Torvalds <torvalds@...ux-foundation.org>, "Theodore Ts'o" <tytso@....edu>, linux-fsdevel <linux-fsdevel@...r.kernel.org>, LKML <linux-kernel@...r.kernel.org>, Sasha Levin <sasha.levin@...cle.com> Subject: Re: [Linux-v4.6-rc1] ext4: WARNING: CPU: 2 PID: 2692 at kernel/locking/lockdep.c:2017 __lock_acquire+0x180e/0x2260 > [ 0.000000] ------------------------------------------------------- > [ 0.000000] Good, all 253 testcases passed! | > [ 0.000000] --------------------------------- > > And it's all good? > ( On shutdown I saw an(other) issue - will investigate, might not be related. ) > The initial reported issue is hard but reproducible. Mar 30 08:26:52 fambox kernel: [ 683.309212] ------------[ cut here ]------------ Mar 30 08:26:52 fambox kernel: [ 683.309221] WARNING: CPU: 3 PID: 10090 at kernel/locking/lockdep.c:2023 __lock_acquire+0x147a/0x2260 Mar 30 08:26:52 fambox kernel: [ 683.309223] DEBUG_LOCKS_WARN_ON(chain_hlocks[chain->base + j] != id) Mar 30 08:26:52 fambox kernel: [ 683.309225] Modules linked in: btrfs xor raid6_pq ntfs xfs libcrc32c ppp_deflate bsd_comp ppp_async crc_ccitt option usb_wwan cdc_ether usbserial usbnet arc4 iwldvm mac80211 bnep rfcomm i915 uvcvideo snd_hda_codec_hdmi snd_hda_codec_realtek videobuf2_vmalloc kvm_intel snd_hda_codec_generic videobuf2_memops videobuf2_v4l2 snd_hda_intel videobuf2_core kvm snd_hda_codec joydev videodev usb_storage parport_pc ppdev snd_hwdep btusb snd_hda_core btrtl i2c_algo_bit snd_pcm irqbypass btbcm iwlwifi drm_kms_helper psmouse btintel snd_seq_midi bluetooth syscopyarea snd_seq_midi_event sysfillrect snd_rawmidi serio_raw samsung_laptop sysimgblt snd_seq fb_sys_fops snd_timer cfg80211 drm snd_seq_device snd soundcore wmi mac_hid video intel_rst lpc_ich lp parport binfmt_misc hid_generic usbhid hid r8169 mii Mar 30 08:26:52 fambox kernel: [ 683.309283] CPU: 3 PID: 10090 Comm: mv Not tainted 4.6.0-rc1-4-iniza-small #1 Mar 30 08:26:52 fambox kernel: [ 683.309285] Hardware name: SAMSUNG ELECTRONICS CO., LTD. 530U3BI/530U4BI/530U4BH/530U3BI/530U4BI/530U4BH, BIOS 13XK 03/28/2013 Mar 30 08:26:52 fambox kernel: [ 683.309287] 0000000000000000 ffff8800330af5d0 ffffffff81411c25 ffff8800330af620 Mar 30 08:26:52 fambox kernel: [ 683.309290] 0000000000000000 ffff8800330af610 ffffffff81083db1 000007e7330af610 Mar 30 08:26:52 fambox kernel: [ 683.309293] ffff880109059300 0000000000000000 0000000000000004 31419e23b49ae8f8 Mar 30 08:26:52 fambox kernel: [ 683.309296] Call Trace: Mar 30 08:26:52 fambox kernel: [ 683.309301] [<ffffffff81411c25>] dump_stack+0x85/0xc0 Mar 30 08:26:52 fambox kernel: [ 683.309304] [<ffffffff81083db1>] __warn+0xd1/0xf0 Mar 30 08:26:52 fambox kernel: [ 683.309307] [<ffffffff81083e1f>] warn_slowpath_fmt+0x4f/0x60 Mar 30 08:26:52 fambox kernel: [ 683.309309] [<ffffffff810dec8a>] __lock_acquire+0x147a/0x2260 Mar 30 08:26:52 fambox kernel: [ 683.309312] [<ffffffff810e0709>] lock_acquire+0x119/0x220 Mar 30 08:26:52 fambox kernel: [ 683.309316] [<ffffffff8131dc05>] ? do_get_write_access+0x3a5/0x5d0 Mar 30 08:26:52 fambox kernel: [ 683.309319] [<ffffffff8180d188>] _raw_spin_lock+0x38/0x50 Mar 30 08:26:52 fambox kernel: [ 683.309322] [<ffffffff8131dc05>] ? do_get_write_access+0x3a5/0x5d0 Mar 30 08:26:52 fambox kernel: [ 683.309324] [<ffffffff8131dc05>] do_get_write_access+0x3a5/0x5d0 Mar 30 08:26:52 fambox kernel: [ 683.309327] [<ffffffff8131de63>] jbd2_journal_get_write_access+0x33/0x60 Mar 30 08:26:52 fambox kernel: [ 683.309331] [<ffffffff812ff25e>] __ext4_journal_get_write_access+0x4e/0x90 Mar 30 08:26:52 fambox kernel: [ 683.309334] [<ffffffff8130665d>] ext4_mb_mark_diskspace_used+0x6d/0x470 Mar 30 08:26:52 fambox kernel: [ 683.309336] [<ffffffff81307f68>] ext4_mb_new_blocks+0x3e8/0x840 Mar 30 08:26:52 fambox kernel: [ 683.309338] [<ffffffff812f6807>] ? ext4_find_extent+0x1b7/0x320 Mar 30 08:26:52 fambox kernel: [ 683.309340] [<ffffffff810db9c9>] ? __lock_is_held+0x49/0x70 Mar 30 08:26:52 fambox kernel: [ 683.309343] [<ffffffff812fb1b5>] ext4_ext_map_blocks+0xab5/0x2100 Mar 30 08:26:52 fambox kernel: [ 683.309348] [<ffffffff812ca45c>] ext4_map_blocks+0x10c/0x510 Mar 30 08:26:52 fambox kernel: [ 683.309350] [<ffffffff810db9c9>] ? __lock_is_held+0x49/0x70 Mar 30 08:26:52 fambox kernel: [ 683.309353] [<ffffffff812ce093>] ext4_writepages+0x723/0x1010 Mar 30 08:26:52 fambox kernel: [ 683.309356] [<ffffffff8180d377>] ? _raw_spin_unlock+0x27/0x40 Mar 30 08:26:52 fambox kernel: [ 683.309359] [<ffffffff811bb221>] do_writepages+0x21/0x30 Mar 30 08:26:52 fambox kernel: [ 683.309362] [<ffffffff811abb5a>] __filemap_fdatawrite_range+0xaa/0xf0 Mar 30 08:26:52 fambox kernel: [ 683.309365] [<ffffffff811abc4c>] filemap_flush+0x1c/0x20 Mar 30 08:26:52 fambox kernel: [ 683.309368] [<ffffffff812cb4a3>] ext4_alloc_da_blocks+0x43/0x130 Mar 30 08:26:52 fambox kernel: [ 683.309370] [<ffffffff812db0b1>] ext4_rename+0x6a1/0x8f0 Mar 30 08:26:52 fambox kernel: [ 683.309372] [<ffffffff810dd24d>] ? mark_held_locks+0x6d/0x90 Mar 30 08:26:52 fambox kernel: [ 683.309374] [<ffffffff8180981f>] ? mutex_lock_nested+0x25f/0x3d0 Mar 30 08:26:52 fambox kernel: [ 683.309377] [<ffffffff812db31d>] ext4_rename2+0x1d/0x30 Mar 30 08:26:52 fambox kernel: [ 683.309379] [<ffffffff812428e1>] vfs_rename+0x601/0x900 Mar 30 08:26:52 fambox kernel: [ 683.309383] [<ffffffff81371500>] ? security_path_rename+0x70/0xd0 Mar 30 08:26:52 fambox kernel: [ 683.309386] [<ffffffff81247c78>] SyS_rename+0x398/0x3b0 Mar 30 08:26:52 fambox kernel: [ 683.309389] [<ffffffff8180dc00>] entry_SYSCALL_64_fastpath+0x23/0xc1 Mar 30 08:26:52 fambox kernel: [ 683.309391] ---[ end trace 7dacba969839f82f ]--- - Sedat -
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