BUG: unable to handle kernel NULL pointer dereference at 0000000000000187
PGD 0 P4D 0
Oops: 0002 [#1] SMP DEBUG_PAGEALLOC
CPU: 0 PID: 19442 Comm: kworker/0:4 Kdump: loaded Tainted: G O -------- - - 4.18.0rh8.10-debug #2
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.17.0-10.fc44 06/10/2025
Workqueue: events rsc_entry_free_work [ptlrpc_gss]
RIP: 0010:down_write+0x57/0xd0
Code: cf 91 ff ff 48 83 05 37 f4 f9 01 01 48 83 05 9f ee f9 01 01 65 ff 05 00 b3 44 7c 48 83 05 98 ee f9 01 01 31 c0 ba 01 00 00 00 <f0> 48 0f b1 13 0f 94 c0 48 83 05 89 ee f9 01 01 84 c0 75 3e be 02
RSP: 0018:ffffb1f180dd3d98 EFLAGS: 00010246
RAX: 0000000000000000 RBX: 0000000000000187 RCX: 0000000007cc2b8a
RDX: 0000000000000001 RSI: 0000000000000626 RDI: ffffffff845869d4
RBP: ffff967d501ba0f0 R08: 00000000000009ab R09: 0000000000000000
R10: 000000000245ab6c R11: ffff967d7fa66000 R12: ffff967d501ba148
R13: ffff967d501ba1a8 R14: ffffffff864587d4 R15: ffff967d501ba0f0
FS: 0000000000000000(0000) GS:ffff967d82000000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000187 CR3: 000000007fe16002 CR4: 0000000000170ef0
Call Trace:
? show_regs.cold.9+0x22/0x2f
? __die_body+0x22/0x90
? __die+0x33/0x4a
? no_context+0x30f/0x5a0
? __bad_area_nosemaphore+0x1c6/0x260
? bad_area_nosemaphore+0x1a/0x30
? do_user_addr_fault+0x540/0x8a0
? __do_page_fault+0x6b/0xa0
? do_page_fault+0x87/0x30f
? page_fault+0x1e/0x30
? down_write+0x57/0xd0
? down_write+0x31/0xd0
debugfs_remove_recursive+0x59/0x260
lprocfs_nodemap_remove+0x1a/0x160 [ptlrpc]
nodemap_destroy+0x45/0x700 [ptlrpc]
nodemap_putref+0xd3/0x130 [ptlrpc]
nodemap_destroy+0x298/0x700 [ptlrpc]
nodemap_putref+0xd3/0x130 [ptlrpc]
gssiam_delete_sec_context+0x22/0x80 [ptlrpc_gss]
lgss_delete_sec_context+0x60/0x2d0 [ptlrpc_gss]
__rsc_free+0x9b/0x140 [ptlrpc_gss]
rsc_entry_free_work+0x21/0xf0 [ptlrpc_gss]
process_one_work+0x2c8/0x700
worker_thread+0x296/0x6e0
? rescuer_thread+0x570/0x570
kthread+0x1d1/0x200
? set_kthread_struct+0x70/0x70
ret_from_fork+0x1f/0x30
Modules linked in: lquota(O) ec(O) ptlrpc_gss(O-) ptlrpc(O) obdclass(O) ksocklnd(O) lnet(O) libcfs(O) zfs(O) spl(O) rpcsec_gss_krb5 auth_rpcgss nfsv4 dns_resolver intel_rapl_msr intel_rapl_common sb_edac rapl pcspkr i2c_piix4 squashfs crct10dif_pclmul crc32_pclmul crc32c_intel ata_generic ghash_clmulni_intel serio_raw ata_piix libata dm_mirror dm_region_hash dm_log dm_mod sha512_ssse3 sha512_generic [last unloaded: mgc]
CR2: 0000000000000187

Lustre: DEBUG MARKER: === recovery-small: start cleanup 02:13:22 (1779430402) ===
Lustre: DEBUG MARKER: === recovery-small: finish cleanup 02:13:23 (1779430403) ===
Lustre: lustre-MDT0000-osp-MDT0001: Connection to lustre-MDT0000 (at 0@lo) was lost; in progress operations using this service will wait for recovery to complete
LustreError: lustre-MDT0000-osp-MDT0001: operation mds_statfs to node 0@lo failed: rc = -107
Lustre: lustre-MDT0000: Not available for connect from 0@lo (stopping)
Lustre: Skipped 5 previous similar messages
Lustre: server umount lustre-MDT0000 complete
LustreError: 13699:0:(ldlm_lockd.c:2564:ldlm_cancel_handler()) ldlm_cancel from 0@lo arrived at 1779430408 with bad export cookie 7813735241879552488
LustreError: MGC192.168.203.138@tcp: Connection to MGS (at 0@lo) was lost; in progress operations using this service will fail
LustreError: 13699:0:(ldlm_lockd.c:2564:ldlm_cancel_handler()) Skipped 3 previous similar messages
Lustre: server umount lustre-MDT0001 complete
Lustre: server umount lustre-OST0000 complete
Lustre: server umount lustre-OST0001 complete
Lustre: DEBUG MARKER: oleg338-server.virtnet: executing unload_modules_local
Key type lgssc unregistered