Details
-
Bug
-
Resolution: Fixed
-
Minor
-
Lustre 2.4.0
-
3
-
7059
Description
To reproduce run
while true; do cat /proc/fs/lustre/llite/*/site &> /dev/null; done & llmount.sh
crash> bt
PID: 2221 TASK: ffff88018da2a040 CPU: 1 COMMAND: "cat"
#0 [ffff8801671c18d0] machine_kexec at ffffffff81031f7b
#1 [ffff8801671c1930] crash_kexec at ffffffff810b8c22
#2 [ffff8801671c1a00] oops_end at ffffffff814eef80
#3 [ffff8801671c1a30] no_context at ffffffff81042a0b
#4 [ffff8801671c1a80] __bad_area_nosemaphore at ffffffff81042c95
#5 [ffff8801671c1ad0] bad_area at ffffffff81042dbe
#6 [ffff8801671c1b00] __do_page_fault at ffffffff81043570
#7 [ffff8801671c1c20] do_page_fault at ffffffff814f0f5e
#8 [ffff8801671c1c50] page_fault at ffffffff814ee315
[exception RIP: lu_site_stats_print+66]
RIP: ffffffffa10a4752 RSP: ffff8801671c1d08 RFLAGS: 00010282
RAX: ffff880118714000 RBX: 0000000000000000 RCX: 0000000000001000
RDX: 0000000000001000 RSI: ffff8801671c1d98 RDI: 0000000000000000
RBP: ffff8801671c1dd8 R8: ffff8801671c1e64 R9: ffff8801664b6c00
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000001000
R13: 0000000000000000 R14: ffff880166ee4000 R15: 0000000000000000
ORIG_RAX: ffffffffffffffff CS: 0010 SS: 0018
#9 [ffff8801671c1de0] cl_site_stats_print at ffffffffa10ac617 [obdclass]
#10 [ffff8801671c1e30] ll_rd_site_stats at ffffffffa0c5ad25 [lustre]
#11 [ffff8801671c1e40] lprocfs_fops_read at ffffffffa10649e3 [obdclass]
#12 [ffff8801671c1ea0] proc_reg_read at ffffffff811dcbde
#13 [ffff8801671c1ef0] vfs_read at ffffffff811782b5
#14 [ffff8801671c1f30] sys_read at ffffffff811783f1
#15 [ffff8801671c1f80] system_call_fastpath at ffffffff8100b072
RIP: 0000003282eda360 RSP: 00007fff17cae0f0 RFLAGS: 00010206
RAX: 0000000000000000 RBX: ffffffff8100b072 RCX: 0000000000a2f030
RDX: 0000000000008000 RSI: 0000000000a27000 RDI: 0000000000000003
RBP: 0000000000a27000 R8: 000000328318dee8 R9: 0000000000000001
R10: 0000000000008fff R11: 0000000000000246 R12: ffffffffffff8000
R13: 0000000000000003 R14: 0000000000008000 R15: 0000000000000003
ORIG_RAX: 0000000000000000 CS: 0033 SS: 002b
crash> dis -l lu_site_stats_print+66
/root/lustre-release/lustre/obdclass/lu_object.c: 2121
0xffffffffa10a4752 <lu_site_stats_print+66>: mov (%rdi),%rdi