Kernel crash in the cifs module with general protection fault in smb2_close_cached_fid
This document (000021737) is provided subject to the disclaimer at the end of this document.
Environment
SUSE Linux Enterprise Server 15 SP6
Situation
The kernel crashed in the cifs module with general protection fault in smb2_close_cached_fid with the following kdump stack trace.
For example:
crash> bt
PID: 13725 TASK: ffff8e8a769a4000 CPU: 1 COMMAND: "nmon"
#0 [ffffa87e4177f6e0] machine_kexec at ffffffff83290ec0
#1 [ffffa87e4177f740] __crash_kexec at ffffffff833bc153
#2 [ffffa87e4177f808] crash_kexec at ffffffff833bd5e4
#3 [ffffa87e4177f818] oops_end at ffffffff83246ba4
#4 [ffffa87e4177f838] exc_general_protection at ffffffff83e59934
#5 [ffffa87e4177f8d0] asm_exc_general_protection at ffffffff84000b62
[exception RIP: smb2_close_cached_fid+37]
RIP: ffffffffc1156f35 RSP: ffffa87e4177f988 RFLAGS: 00010202
RAX: dead000000000122 RBX: ffff8e9120d91830 RCX: 0000003a42cbc001
RDX: dead000000000100 RSI: 0000000000000000 RDI: ffff8e8a47921f00
RBP: ffff8e9120d91800 R8: 0000000000956798 R9: 0000000000956798
R10: ffffa87e4177f878 R11: 0000000000000f99 R12: ffffa87e4177fc08
R13: ffff8e8a47889800 R14: 0000000000000400 R15: 0000000000000000
ORIG_RAX: ffffffffffffffff CS: 0010 SS: 0018
#6 [ffffa87e4177f998] smb2_query_info_compound at ffffffffc116eaf6 [cifs]
#7 [ffffa87e4177fca0] smb2_queryfs at ffffffffc116f76a [cifs]
#8 [ffffa87e4177fd10] cifs_statfs at ffffffffc112821f [cifs]
#9 [ffffa87e4177fd40] statfs_by_dentry at ffffffff836442b4
#10 [ffffa87e4177fd58] vfs_statfs at ffffffff83644a06
#11 [ffffa87e4177fd70] fd_statfs at ffffffff83644d9d
#12 [ffffa87e4177fd98] __do_sys_fstatfs at ffffffff83644e00
#13 [ffffa87e4177fe28] do_syscall_64 at ffffffff83e57478
#14 [ffffa87e4177ff50] entry_SYSCALL_64_after_hwframe at ffffffff84000134Resolution
This bug is fixed in SLE 15 SP6 kernel versions 6.4.0-150600.23.42.2
Cause
This bug is caused by a race condition between opening, closing and lease-break closing of cached directories for cifs mount points.
Disclaimer
This Support Knowledgebase provides a valuable tool for SUSE customers and parties interested in our products and solutions to acquire information, ideas and learn from one another. Materials are provided for informational, personal or non-commercial use within your organization and are presented "AS IS" WITHOUT WARRANTY OF ANY KIND.
- Document ID:000021737
- Creation Date: 17-Mar-2025
- Modified Date:18-Mar-2025
-
- SUSE Linux Enterprise Server
For questions or concerns with the SUSE Knowledgebase please contact: tidfeedback[at]suse.com
