[next-20220215] WARNING at fs/iomap/buffered-io.c:75 with xfstests

Wed Feb 16 18:25:02 AEDT 2022

While running xfstests on IBM Power10 logical partition (LPAR) booted
with 5.17.0-rc4-next-20220215 following warning was seen:

[ 2547.384210] xfs filesystem being mounted at /mnt/scratch supports timestamps until 2038 (0x7fffffff)
[ 2547.389021] XFS (dm-0): metadata I/O error in "xfs_imap_to_bp+0x64/0x98 [xfs]" at daddr 0x2bc2c0 len 32 error 5
[ 2547.389020] XFS (dm-0): metadata I/O error in "xfs_imap_to_bp+0x64/0x98 [xfs]" at daddr 0x15cede0 len 32 error 5
[ 2547.389026] XFS (dm-0): metadata I/O error in "xfs_btree_read_buf_block.constprop.29+0xd0/0x110 [xfs]" at daddr 0xc60 len 8 error 5
[ 2547.389032] XFS (dm-0): metadata I/O error in "xfs_btree_read_buf_block.constprop.29+0xd0/0x110 [xfs]" at daddr 0x3bffa30 len 8 error 5
[ 2547.389120] XFS (dm-0): log I/O error -5
[ 2547.389135] XFS (dm-0): Metadata I/O Error (0x1) detected at xfs_trans_read_buf_map+0x31c/0x368 [xfs] (fs/xfs/xfs_trans_buf.c:296).  Shutting down filesystem.
[ 2547.389195] XFS (dm-0): Please unmount the filesystem and rectify the problem(s)
[ 2547.662818] ------------[ cut here ]------------
[ 2547.662832] WARNING: CPU: 24 PID: 2463718 at fs/iomap/buffered-io.c:75 iomap_page_release+0x1b0/0x1e0
[ 2547.662840] Modules linked in: dm_thin_pool dm_persistent_data dm_bio_prison dm_snapshot dm_bufio loop dm_flakey xfs libcrc32c dm_mod rfkill bonding sunrpc pseries_rng xts vmx_crypto uio_pdrv_genirq uio sch_fq_codel ext4 mbcache jbd2 sd_mod t10_pi sg ibmvscsi ibmveth scsi_transport_srp fuse [last unloaded: scsi_debug]
[ 2547.662866] CPU: 24 PID: 2463718 Comm: umount Not tainted 5.17.0-rc4-next-20220215 #1
[ 2547.662871] NIP:  c000000000565b80 LR: c000000000565aa0 CTR: c000000000565e40
[ 2547.662874] REGS: c00000000f0035b0 TRAP: 0700   Not tainted  (5.17.0-rc4-next-20220215)
[ 2547.662877] MSR:  800000000282b033 <SF,VEC,VSX,EE,FP,ME,IR,DR,RI,LE>  CR: 44000228  XER: 20040000
[ 2547.662885] CFAR: c000000000565ac8 IRQMASK: 0 
[ 2547.662885] GPR00: c00000000037dd3c c00000000f003850 c000000002a03300 0000000000000001 
[ 2547.662885] GPR04: 0000000000000010 0000000000010000 c0000000df6e7bc0 0000000000000001 
[ 2547.662885] GPR08: fffffffffffeffff 0000000000000000 0000000000000010 0000000000000228 
[ 2547.662885] GPR12: c000000000565e40 c000000abfcfe680 0000000000000000 0000000000000000 
[ 2547.662885] GPR16: 0000000000000000 0000000000000000 0000000000000000 0000000000000000 
[ 2547.662885] GPR20: 0000000000000000 0000000000000000 ffffffffffffffff fffffffffffffffe 
[ 2547.662885] GPR24: 0000000000000000 ffffffffffffffff c00000000f0038e0 c0000000243db278 
[ 2547.662885] GPR28: 0000000000000012 c0000000df6e7ae0 0000000000000010 c00c00000240c100 
[ 2547.662920] NIP [c000000000565b80] iomap_page_release+0x1b0/0x1e0
[ 2547.662924] LR [c000000000565aa0] iomap_page_release+0xd0/0x1e0
[ 2547.662927] Call Trace:
[ 2547.662928] [c00000000f003850] [c00000000f003890] 0xc00000000f003890 (unreliable)
[ 2547.662932] [c00000000f003890] [c00000000037dd3c] truncate_cleanup_folio+0x7c/0x140
[ 2547.662937] [c00000000f0038c0] [c00000000037f068] truncate_inode_pages_range+0x148/0x5e0
[ 2547.662942] [c00000000f003a40] [c0000000004c2058] evict+0x248/0x270
[ 2547.662946] [c00000000f003a80] [c0000000004c20fc] dispose_list+0x7c/0xb0
[ 2547.662951] [c00000000f003ac0] [c0000000004c2314] evict_inodes+0x1e4/0x300
[ 2547.662955] [c00000000f003b60] [c0000000004922d0] generic_shutdown_super+0x70/0x1e0
[ 2547.662959] [c00000000f003bd0] [c000000000492518] kill_block_super+0x38/0x90
[ 2547.662964] [c00000000f003c00] [c0000000004926e8] deactivate_locked_super+0x78/0xf0
[ 2547.662968] [c00000000f003c30] [c0000000004cde9c] cleanup_mnt+0xfc/0x1c0
[ 2547.662972] [c00000000f003c80] [c000000000189448] task_work_run+0xf8/0x170
[ 2547.662976] [c00000000f003cd0] [c000000000021b94] do_notify_resume+0x434/0x480
[ 2547.662981] [c00000000f003d80] [c0000000000338b0] interrupt_exit_user_prepare_main+0x1a0/0x260
[ 2547.662985] [c00000000f003de0] [c000000000033d74] syscall_exit_prepare+0x74/0x150
[ 2547.662989] [c00000000f003e10] [c00000000000c658] system_call_common+0xf8/0x270
[ 2547.662994] --- interrupt: c00 at 0x7fffa6bb7dfc
[ 2547.662996] NIP:  00007fffa6bb7dfc LR: 00007fffa6bb7dcc CTR: 0000000000000000
[ 2547.662999] REGS: c00000000f003e80 TRAP: 0c00   Not tainted  (5.17.0-rc4-next-20220215)
[ 2547.663001] MSR:  800000000280f033 <SF,VEC,VSX,EE,PR,FP,ME,IR,DR,RI,LE>  CR: 28000202  XER: 00000000
[ 2547.663010] IRQMASK: 0 
[ 2547.663010] GPR00: 0000000000000034 00007fffc7ca6a70 00007fffa6c87300 0000000000000000 
[ 2547.663010] GPR04: 0000000000000000 00007fffc7ca6a88 0000000000000000 0000000166cf4e90 
[ 2547.663010] GPR08: 0000000000000000 0000000000000000 0000000000000000 0000000000000000 
[ 2547.663010] GPR12: 0000000000000000 00007fffa6f1d730 0000000000000000 0000000000000000 
[ 2547.663010] GPR16: 0000000000000000 0000000000000000 0000000000000000 0000000000000000 
[ 2547.663010] GPR20: 0000000000000000 0000000000000000 0000000000000000 0000000000000000 
[ 2547.663010] GPR24: 000000012d3b5f70 000000012d3b65d0 000000012d3cf6e8 0000000166cf0b50 
[ 2547.663010] GPR28: 00007fffa6e701a4 0000000166cf4e90 0000000000000000 0000000166cf0970 
[ 2547.663042] NIP [00007fffa6bb7dfc] 0x7fffa6bb7dfc
[ 2547.663045] LR [00007fffa6bb7dcc] 0x7fffa6bb7dcc
[ 2547.663047] --- interrupt: c00
[ 2547.663048] Instruction dump:
[ 2547.663050] 38210040 e9230000 ebe1fff8 4e800020 0fe00000 60000000 60000000 60000000 
[ 2547.663056] 0fe00000 60000000 60000000 60000000 <0fe00000> 60000000 60000000 60000000 
[ 2547.663062] ---[ end trace 0000000000000000 ]---
[ 2547.663075] XFS (dm-0): Unmounting Filesystem

The warning is seen when test tries to unmount the file system. This problem is seen
while running generic/475 sub test. Have attached captured messages during the test
run of generic/475.

xfstest is a recent add to upstream regression bucket. I don’t have any previous data
to attempt a git bisect. 

Let me know if any additional information is required.

Thanks
-Sachin

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