On Wed, Mar 16, 2022 at 11:26:12AM +0900, Byungchul Park wrote:
I'm gonna re-add RFC for a while at Ted's request. But hard testing is needed to find false alarms for now that there's no false alarm with my system. I'm gonna look for other systems that might produce false alarms. And it'd be appreciated if you share it when you see any alarms with yours.
Is dept1.18_on_v5.17-rc7 roughly equivalent to the v5 version sent to the list. The commit date is March 16th, so I assume it was. I tried merging it with the ext4 dev branch, and tried enabling CONFIG_DEPT and running xfstests. The result was nearly test failing, because a DEPT warning.
I assume that this is due to some misconfiguration of DEPT on my part? And I'm curious why DEPT_WARN_ONCE is apparently getting many, many times?
[ 760.990409] DEPT_WARN_ONCE: Pool(ecxt) is empty. [ 770.319656] DEPT_WARN_ONCE: Pool(ecxt) is empty. [ 772.460360] DEPT_WARN_ONCE: Pool(ecxt) is empty. [ 784.039676] DEPT_WARN_ONCE: Pool(ecxt) is empty.
(and this goes on over and over...)
Here's the full output of the DEPT warning from trying to run generic/001. There is a similar warning for generic/002, generic/003, etc., for a total of 468 failures out of 495 tests run.
[ 760.945068] run fstests generic/001 at 2022-03-16 08:16:53 [ 760.985440] ------------[ cut here ]------------ [ 760.990409] DEPT_WARN_ONCE: Pool(ecxt) is empty. [ 760.995166] WARNING: CPU: 1 PID: 73369 at kernel/dependency/dept.c:297 from_pool+0xc2/0x110 [ 761.003915] CPU: 1 PID: 73369 Comm: bash Tainted: G W 5.17.0-rc7-xfstests-00649-g5456f2312272 #520 [ 761.014389] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 761.024363] RIP: 0010:from_pool+0xc2/0x110 [ 761.028598] Code: 3d 32 62 96 01 00 75 c2 48 6b db 38 48 c7 c7 00 94 f1 ad 48 89 04 24 c6 05 1a 62 96 01 01 48 8b b3 20 9a 2f ae e8 2f dd bf 00 <0f> 0b 48 8b 04 24 eb 98 48 63 c2 48 0f af 86 28 9a 2f ae 48 03 86 [ 761.048189] RSP: 0018:ffffa7ce4425fd48 EFLAGS: 00010086 [ 761.053617] RAX: 0000000000000000 RBX: 00000000000000a8 RCX: 0000000000000000 [ 761.060965] RDX: 0000000000000001 RSI: ffffffffadfb95e0 RDI: 00000000ffffffff [ 761.068322] RBP: 00000000001dc598 R08: 0000000000000000 R09: ffffa7ce4425fb90 [ 761.075789] R10: fffffffffffe0aa0 R11: fffffffffffe0ae8 R12: ffff9768e07f0600 [ 761.083063] R13: 0000000000000000 R14: 0000000000000246 R15: 0000000000000000 [ 761.090312] FS: 00007fd4ecc4c740(0000) GS:ffff976999400000(0000) knlGS:0000000000000000 [ 761.098623] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 761.104580] CR2: 0000563c61657eb0 CR3: 00000001328fa001 CR4: 00000000003706e0 [ 761.111921] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 761.119171] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 761.126617] Call Trace: [ 761.129175] <TASK> [ 761.131385] add_ecxt+0x54/0x1c0 [ 761.134736] ? simple_attr_write+0x87/0x100 [ 761.139063] dept_event+0xaa/0x1d0 [ 761.142687] ? simple_attr_write+0x87/0x100 [ 761.147089] __mutex_unlock_slowpath+0x60/0x2d0 [ 761.151866] simple_attr_write+0x87/0x100 [ 761.155997] debugfs_attr_write+0x40/0x60 [ 761.160124] vfs_write+0xec/0x390 [ 761.163557] ksys_write+0x68/0xe0 [ 761.167004] do_syscall_64+0x43/0x90 [ 761.170782] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 761.176204] RIP: 0033:0x7fd4ecd3df33 [ 761.180010] Code: 8b 15 61 ef 0c 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b7 0f 1f 00 64 8b 04 25 18 00 00 00 85 c0 75 14 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 55 c3 0f 1f 40 00 48 83 ec 28 48 89 54 24 18 [ 761.199551] RSP: 002b:00007ffe772d4808 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 761.207240] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007fd4ecd3df33 [ 761.214583] RDX: 0000000000000002 RSI: 0000563c61657eb0 RDI: 0000000000000001 [ 761.221835] RBP: 0000563c61657eb0 R08: 000000000000000a R09: 0000000000000001 [ 761.229537] R10: 0000563c61902240 R11: 0000000000000246 R12: 0000000000000002 [ 761.237239] R13: 00007fd4ece0e6a0 R14: 0000000000000002 R15: 00007fd4ece0e8a0 [ 761.245283] </TASK> [ 761.247586] ---[ end trace 0000000000000000 ]--- [ 761.761829] EXT4-fs (dm-0): mounted filesystem with ordered data mode. Quota mode: none. [ 769.903489] EXT4-fs (dm-0): mounted filesystem with ordered data mode. Quota mode: none.
Let me know what I should do in order to fix this DEPT_WARN_ONCE?
Thanks,
- Ted