[LU-15119] BUG: unable to handle kernel paging request at tgt_brw_read+0x16bf/0x1d80

• Type: Bug
• Resolution: Fixed
• Priority: Minor
• Fix Version/s: Lustre 2.15.0
• Severity: 3
• Assignee: Andriy Skulysh
• Reporter: Andriy Skulysh

Description

PID: 163433  TASK: ffff89ce48f76180  CPU: 9   COMMAND: "mdt_io02_023"
#0 [ffff89d21ffe3780] machine_kexec at ffffffff89263674
#1 [ffff89d21ffe37e0] __crash_kexec at ffffffff8931d252
#2 [ffff89d21ffe38b0] crash_kexec at ffffffff8931d340
#3 [ffff89d21ffe38c8] oops_end at ffffffff8996f758
#4 [ffff89d21ffe38f0] no_context at ffffffff8995dafe
#5 [ffff89d21ffe3940] __bad_area_nosemaphore at ffffffff8995db95
#6 [ffff89d21ffe3990] bad_area_nosemaphore at ffffffff8995dd06
#7 [ffff89d21ffe39a0] __do_page_fault at ffffffff899726b0
#8 [ffff89d21ffe3a10] do_page_fault at ffffffff89972915
#9 [ffff89d21ffe3a40] page_fault at ffffffff8996e758
   [exception RIP: tgt_brw_read+5823]
   RIP: ffffffffc105dfef  RSP: ffff89d21ffe3af8  RFLAGS: 00010256
   RAX: ffffac584f8d2fc0  RBX: ffff89d09d275a00  RCX: 0000000000000000
   RDX: 008000000b184f21  RSI: ffff89c4eee5f780  RDI: 0000000000006000
   RBP: ffff89d21ffe3c98   R8: ffffddee6adb5060   R9: ffffffffc10cca60
   R10: ffff89c52ff510c0  R11: ffffddee57c67800  R12: ffff89b65f297ce0
   R13: ffffac584f8d3000  R14: 0000000000000000  R15: ffff89c4e7f97800
   ORIG_RAX: ffffffffffffffff  CS: 0010  SS: 0018
#10 [ffff89d21ffe3af0] tgt_brw_read at ffffffffc105dfaf [ptlrpc]
#11 [ffff89d21ffe3ca0] tgt_request_handle at ffffffffc1059eda [ptlrpc]
#12 [ffff89d21ffe3d30] ptlrpc_server_handle_request at ffffffffc0fff796 [ptlrpc]
#13 [ffff89d21ffe3de8] ptlrpc_main at ffffffffc1003875 [ptlrpc]
#14 [ffff89d21ffe3ec8] kthread at ffffffff892c1f81
#15 [ffff89d21ffe3f50] ret_from_fork_nospec_begin at ffffffff89977c1d