[LU-12462] osc_cache_writeback_range(): ASSERTION( ext->oe_start >= start && ext->oe_end <= end ) failed

Cloners — Mon, 3 Aug 2020 14:25:11 +0000

This is a new failure in racer happening only in maloo full testning. First crash recorded was on June 1st right after landing this below bunch of patches. On both patched and patchless master builds:

~~LU-12034~~ obdclass: put all service's env on the list (detail / gitweb)
~~LU-11359~~ mdt: fix mdt_dom_discard_data() timeouts (detail / gitweb)
~~LU-9846~~ lod: Add overstriping support (detail / gitweb)
~~LU-11893~~ o2iblnd: add secondary IP address handling (detail / gitweb)
~~LU-11526~~ rpc: support maximum 64MB I/O RPC (detail / gitweb)
~~LU-11872~~ utils: don't follow link files in default (detail / gitweb)
~~LU-10894~~ dom: per-resource ELC for WRITE lock enqueue (detail / gitweb)
~~LU-10894~~ dom: mdc_lock_flush() improvement (detail / gitweb)
~~LU-11946~~ build: no zlib check during configure --enable-dist (detail / gitweb)
~~LU-11946~~ build: no yaml check during configure --enable-dist (detail / gitweb)
~~LU-12302~~ lnet: Fix NI status in proc for loopback ni (detail / gitweb)
~~LU-12333~~ ptlrpc: Add more flags to DEBUG_REQ_FLAGS macro (detail / gitweb)
~~LU-12342~~ spec: mark lsvcgss as a config file in the rpm (detail / gitweb)
~~LU-12350~~ tests: Do not use background failover (detail / gitweb)
~~LU-11089~~ obd: use wait_event_var() in lu_context_key_degister() (detail / gitweb)
~~LU-11089~~ obd: remove lock from key register/degister (detail / gitweb)
LU-6142 ldlm: Fix style issues for ldlm_plain.c (detail / gitweb)
~~LU-12323~~ libcfs: check if save_stack_trace_tsk is exported (detail / gitweb)
~~LU-10467~~ ptlrpc: discard SVC_SIGNAL and related functions (detail / gitweb)
~~LU-12345~~ ldiskfs: optimize nodelalloc mode (detail / gitweb)
~~LU-11041~~ kernel: Enable tons of kernel debug options (detail / gitweb)
LU-10948 llite: Revalidate dentries in ll_intent_file_open (detail / gitweb)

This does not appear to happen in any of my testing, with major difference being in my testing I have DOM disabled, but then again the backtrace is not in DOM:

Lustre: DEBUG MARKER: DURATION=900 MDSCOUNT=4 OSTCOUNT=8 RACER_ENABLE_REMOTE_DIRS=true RACER_ENABLE_STRIPED_DIRS=true RACER_ENABLE_MIGRATION=false RACER_ENABLE_PFL=true RACER_ENABLE_DOM=true RACER_ENABLE_FLR=true LFS=/usr/bin/lfs LCTL=/usr/sbin/lctl
Lustre: DEBUG MARKER: DURATION=900 MDSCOUNT=4 OSTCOUNT=8 RACER_ENABLE_REMOTE_DIRS=true RACER_ENABLE_STRIPED_DIRS=true RACER_ENABLE_MIGRATION=false RACER_ENABLE_PFL=true RACER_ENABLE_DOM=true RACER_ENABLE_FLR=true LFS=/usr/bin/lfs LCTL=/usr/sbin/lctl
Lustre: DEBUG MARKER: DURATION=900 MDSCOUNT=4 OSTCOUNT=8 RACER_ENABLE_REMOTE_DIRS=true RACER_ENABLE_STRIPED_DIRS=true RACER_ENABLE_MIGRATION=false RACER_ENABLE_PFL=true RACER_ENABLE_DOM=true RACER_ENABLE_FLR=true LFS=/usr/bin/lfs LCTL=/usr/sbin/lctl
Lustre: DEBUG MARKER: DURATION=900 MDSCOUNT=4 OSTCOUNT=8 RACER_ENABLE_REMOTE_DIRS=true RACER_ENABLE_STRIPED_DIRS=true RACER_ENABLE_MIGRATION=false RACER_ENABLE_PFL=true RACER_ENABLE_DOM=true RACER_ENABLE_FLR=true LFS=/usr/bin/lfs LCTL=/usr/sbin/lctl
Lustre: DEBUG MARKER: DURATION=900 MDSCOUNT=4 OSTCOUNT=8 RACER_ENABLE_REMOTE_DIRS=true RACER_ENABLE_STRIPED_DIRS=true RACER_ENABLE_MIGRATION=false RACER_ENABLE_PFL=true RACER_ENABLE_DOM=true RACER_ENABLE_FLR=true LFS=/usr/bin/lfs LCTL=/usr/sbin/lctl
Lustre: DEBUG MARKER: DURATION=900 MDSCOUNT=4 OSTCOUNT=8 RACER_ENABLE_REMOTE_DIRS=true RACER_ENABLE_STRIPED_DIRS=true RACER_ENABLE_MIGRATION=false RACER_ENABLE_PFL=true RACER_ENABLE_DOM=true RACER_ENABLE_FLR=true LFS=/usr/bin/lfs LCTL=/usr/sbin/lctl
Lustre: DEBUG MARKER: DURATION=900 MDSCOUNT=4 OSTCOUNT=8 RACER_ENABLE_REMOTE_DIRS=true RACER_ENABLE_STRIPED_DIRS=true RACER_ENABLE_MIGRATION=false RACER_ENABLE_PFL=true RACER_ENABLE_DOM=true RACER_ENABLE_FLR=true LFS=/usr/bin/lfs LCTL=/usr/sbin/lctl
Lustre: DEBUG MARKER: DURATION=900 MDSCOUNT=4 OSTCOUNT=8 RACER_ENABLE_REMOTE_DIRS=true RACER_ENABLE_STRIPED_DIRS=true RACER_ENABLE_MIGRATION=false RACER_ENABLE_PFL=true RACER_ENABLE_DOM=true RACER_ENABLE_FLR=true LFS=/usr/bin/lfs LCTL=/usr/sbin/lctl
15[30843]: segfault at 0 ip (null) sp 00007fff2f60f558 error 14 in 15[400000+6000]
19[11605]: segfault at 8 ip 00007fb7cd1f2958 sp 00007fffbcc378f0 error 4 in ld-2.17.so[7fb7cd1e7000+22000]
5[24620]: segfault at 8 ip 00007f432a0fe958 sp 00007fff4e77a210 error 4 in ld-2.17.so[7f432a0f3000+22000]
16[23010]: segfault at 8 ip 00007f4ab1b40958 sp 00007ffebe439030 error 4 in ld-2.17.so[7f4ab1b35000+22000]
LustreError: 3977:0:(osc_cache.c:3035:osc_cache_writeback_range()) extent ffff8eb4a553f4d0@{[0 -> 255/255], [1|0|-|cache|wiY|ffff8eb48a5f3000], [1703936|128|+|-|ffff8eb498770d80|256| (null)]}
LustreError: 3977:0:(osc_cache.c:3035:osc_cache_writeback_range()) ### extent: ffff8eb4a553f4d0 ns: lustre-OST0003-osc-ffff8eb4b8348800 lock: ffff8eb498770d80/0x127dda6c42633b5a lrc: 2/0,0 mode: PW/PW res: [0xb1c:0x0:0x0].0x0 rrc: 2 type: EXT [0->18446744073709551615] (req 524288->18446744073709551615) flags: 0x20080020000 nid: local remote: 0xf6ccd1090fb739f3 expref: -99 pid: 3963 timeout: 0 lvb_type: 1
LustreError: 3977:0:(osc_cache.c:1246:osc_extent_tree_dump0()) Dump object ffff8eb48a5f3000 extents at osc_cache_writeback_range:3035, mppr: 256.
LustreError: 3977:0:(osc_cache.c:1251:osc_extent_tree_dump0()) extent ffff8eb4a553f4d0@{[0 -> 255/255], [1|0|-|cache|wiY|ffff8eb48a5f3000], [1703936|128|+|-|ffff8eb498770d80|256| (null)]} in tree 1.
LustreError: 3977:0:(osc_cache.c:1251:osc_extent_tree_dump0()) ### extent: ffff8eb4a553f4d0 ns: lustre-OST0003-osc-ffff8eb4b8348800 lock: ffff8eb498770d80/0x127dda6c42633b5a lrc: 2/0,0 mode: PW/PW res: [0xb1c:0x0:0x0].0x0 rrc: 2 type: EXT [0->18446744073709551615] (req 524288->18446744073709551615) flags: 0x20080020000 nid: local remote: 0xf6ccd1090fb739f3 expref: -99 pid: 3963 timeout: 0 lvb_type: 1
LustreError: 3977:0:(osc_cache.c:3035:osc_cache_writeback_range()) ASSERTION( ext->oe_start >= start && ext->oe_end <= end ) failed:
LustreError: 3977:0:(osc_cache.c:3035:osc_cache_writeback_range()) LBUG
Pid: 3977, comm: cat 3.10.0-862.14.4.el7.x86_64 #1 SMP Wed Sep 26 15:12:11 UTC 2018
Call Trace:
[<ffffffffc06e47cc>] libcfs_call_trace+0x8c/0xc0 [libcfs]
[<ffffffffc06e487c>] lbug_with_loc+0x4c/0xa0 [libcfs]
[<ffffffffc0cd0cad>] osc_cache_writeback_range+0xacd/0x1260 [osc]
[<ffffffffc0cbf765>] osc_io_fsync_start+0x85/0x1a0 [osc]
[<ffffffffc087b4c8>] cl_io_start+0x68/0x130 [obdclass]
[<ffffffffc0d10cb7>] lov_io_call.isra.7+0x87/0x140 [lov]
[<ffffffffc0d10e76>] lov_io_start+0x56/0x150 [lov]
[<ffffffffc087b4c8>] cl_io_start+0x68/0x130 [obdclass]
[<ffffffffc087d69c>] cl_io_loop+0xcc/0x1c0 [obdclass]
[<ffffffffc0d77c2b>] cl_sync_file_range+0x2db/0x380 [lustre]
[<ffffffffc0d8d090>] ll_delete_inode+0x150/0x220 [lustre]
[<ffffffff9423c504>] evict+0xb4/0x180
[<ffffffff9423ce0c>] iput+0xfc/0x190
[<ffffffff942376f0>] __dentry_kill+0x120/0x180
[<ffffffff942377f9>] dput+0xa9/0x160
[<ffffffff9422158e>] __fput+0x17e/0x260
[<ffffffff9422175e>] ____fput+0xe/0x10
[<ffffffff940bab8b>] task_work_run+0xbb/0xe0
[<ffffffff9402bc55>] do_notify_resume+0xa5/0xc0
[<ffffffff94725ae4>] int_signal+0x12/0x17
[<ffffffffffffffff>] 0xffffffffffffffff

Very first crash:
https://testing.whamcloud.com/test_sessions/2d05c3e5-2252-4056-8082-3c9183b4aef4

last crash as of the time of this writing:
https://testing.whamcloud.com/test_sets/35838dd8-93da-11e9-a1a3-52540065bddc

as of now 13 crashes like this were recorded, all in delete_inode path.

Whamcloud Community JIRA

[LU-12462] osc_cache_writeback_range(): ASSERTION( ext->oe_start >= start && ext->oe_end <= end ) failed