BUG: unable to handle kernel NULL pointer dereference at 0000000000000050
PGD 106315067 P4D 106315067 PUD 10431b067 PMD 0
Oops: 0000 [#1] SMP DEBUG_PAGEALLOC
CPU: 2 PID: 32250 Comm: lnetctl 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
RIP: 0010:lnet_net_show_start+0x567/0x860 [lnet]
Code: 44 24 08 e8 6b 82 02 00 4c 8b 44 24 08 8b 4c 24 10 83 f8 ff 41 89 04 24 4c 8b 5c 24 18 44 8b 4c 24 24 0f 84 18 01 00 00 31 ff <48> 8b 77 50 48 83 c7 50 48 39 fe 0f 84 fd 00 00 00 44 8b 15 d1 c3
RSP: 0018:ffffb13487f778d8 EFLAGS: 00010246
RAX: 0000000000020000 RBX: ffffb13487f77b48 RCX: 0000000000000018
RDX: 0000000000000000 RSI: ffffffffc06339cf RDI: 0000000000000000
RBP: ffff932a0500b468 R08: 0000000000000000 R09: 0000000000000000
R10: 000000000056447e R11: ffff932a02ac1c2c R12: ffff932a055e1f20
R13: ffff932a02ac1c18 R14: 000000000000001c R15: 0000000000000003
FS: 00007f24a4460c40(0000) GS:ffff932a42100000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000050 CR3: 0000000104f0d001 CR4: 0000000000170ee0
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+0x54/0x70
? do_user_addr_fault+0x6f9/0x8a0
? _raw_spin_unlock+0x12/0x30
? __do_page_fault+0x6b/0xa0
? do_page_fault+0x87/0x30f
? page_fault+0x1e/0x30
? _nfs4_proc_getdeviceinfo.cold.90+0xc/0x5b [nfsv4]
? lnet_net_show_start+0x567/0x860 [lnet]
? lnet_net_show_start+0x545/0x860 [lnet]
genl_start+0x123/0x250
__netlink_dump_start+0x1c1/0x2f0
genl_family_rcv_msg_dumpit.isra.12+0x9b/0x170
? genl_rcv_msg+0xd0/0xd0
? lnet_peer_ni_cmd+0xe80/0xe80 [lnet]
? genl_rcv+0x60/0x60
genl_family_rcv_msg+0x125/0x1f0
? lnet_dyn_del_net+0x360/0x360 [lnet]
? lnet_peer_ni_decref_locked+0x40/0x40 [lnet]
? lnet_peer_ni_cmd+0xe80/0xe80 [lnet]
? lnet_counters_get_common+0x60/0x60 [lnet]
genl_rcv_msg+0x5b/0xd0
? genl_family_rcv_msg+0x1f0/0x1f0
netlink_rcv_skb+0x62/0x180
genl_rcv+0x34/0x60
netlink_unicast+0x250/0x3e0
netlink_sendmsg+0x3da/0x600
__sock_sendmsg+0x50/0x90
____sys_sendmsg+0x1ea/0x330
? copy_msghdr_from_user+0x74/0xb0
___sys_sendmsg+0x8c/0xe0
? do_raw_spin_unlock+0x75/0x190
? _raw_spin_unlock+0x12/0x30
? do_fault+0x3f5/0x6a0
? __handle_mm_fault+0xa51/0xfe0
__sys_sendmsg+0x6b/0xe0
__x64_sys_sendmsg+0x23/0x30
do_syscall_64+0xc1/0x440
entry_SYSCALL_64_after_hwframe+0x49/0xae
RIP: 0033:0x7f24a33d5d78

Lustre: DEBUG MARKER: /home/green/git/lustre-release/lustre/../lnet/utils/lnetctl lnet unconfigure
LNet: 32129:0:(lib-ptl.c:964:lnet_clear_lazy_portal()) Active lazy portal 0 on exit
Lustre: DEBUG MARKER: /home/green/git/lustre-release/lustre/../lnet/utils/lnetctl lnet configure
Lustre: DEBUG MARKER: /home/green/git/lustre-release/lustre/../lnet/utils/lnetctl net add --net tcp --if ens2
LNet: Added LNI 192.168.202.33@tcp [8/256/0/180]

BUG: unable to handle kernel NULL pointer dereference at 0000000000000050
PGD 102e29067 P4D 102e29067 PUD 106923067 PMD 0
Oops: 0000 [#1] SMP DEBUG_PAGEALLOC
CPU: 2 PID: 33433 Comm: lnetctl 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
RIP: 0010:lnet_net_show_start+0x567/0x860 [lnet]
Code: 44 24 08 e8 6b 82 02 00 4c 8b 44 24 08 8b 4c 24 10 83 f8 ff 41 89 04 24 4c 8b 5c 24 18 44 8b 4c 24 24 0f 84 18 01 00 00 31 ff <48> 8b 77 50 48 83 c7 50 48 39 fe 0f 84 fd 00 00 00 44 8b 15 d1 c3
RSP: 0018:ffffbc9187f638d8 EFLAGS: 00010246
RAX: 0000000000020000 RBX: ffffbc9187f63b48 RCX: 0000000000000018
RDX: 0000000000000000 RSI: ffffffffc05aa797 RDI: 0000000000000000
RBP: ffff992b60f8c468 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000571ad6 R11: ffff992b43f7f22c R12: ffff992b43feb0c8
R13: ffff992b43f7f218 R14: 000000000000001c R15: 0000000000000003
FS: 00007f19855bec40(0000) GS:ffff992b82100000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000050 CR3: 000000012e183002 CR4: 0000000000170ee0
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+0x54/0x70
? do_user_addr_fault+0x6f9/0x8a0
? _raw_spin_unlock+0x12/0x30
? __do_page_fault+0x6b/0xa0
? do_page_fault+0x87/0x30f
? page_fault+0x1e/0x30
? pnfs_destroy_layout_final+0x67/0x180 [nfsv4]
? lnet_net_show_start+0x567/0x860 [lnet]
? lnet_net_show_start+0x545/0x860 [lnet]
genl_start+0x123/0x250
__netlink_dump_start+0x1c1/0x2f0
genl_family_rcv_msg_dumpit.isra.12+0x9b/0x170
? genl_rcv_msg+0xd0/0xd0
? lnet_peer_ni_cmd+0xe80/0xe80 [lnet]
? genl_rcv+0x60/0x60
genl_family_rcv_msg+0x125/0x1f0
? lnet_dyn_del_net+0x360/0x360 [lnet]
? lnet_peer_ni_decref_locked+0x40/0x40 [lnet]
? lnet_peer_ni_cmd+0xe80/0xe80 [lnet]
? lnet_counters_get_common+0x60/0x60 [lnet]
genl_rcv_msg+0x5b/0xd0
? genl_family_rcv_msg+0x1f0/0x1f0
netlink_rcv_skb+0x62/0x180
genl_rcv+0x34/0x60
netlink_unicast+0x250/0x3e0
netlink_sendmsg+0x3da/0x600
__sock_sendmsg+0x50/0x90
____sys_sendmsg+0x1ea/0x330
? copy_msghdr_from_user+0x74/0xb0
___sys_sendmsg+0x8c/0xe0
? do_raw_spin_unlock+0x75/0x190
? _raw_spin_unlock+0x12/0x30
? do_fault+0x3f5/0x6a0
? __handle_mm_fault+0xa51/0xfe0
__sys_sendmsg+0x6b/0xe0
__x64_sys_sendmsg+0x23/0x30
do_syscall_64+0xc1/0x440
entry_SYSCALL_64_after_hwframe+0x49/0xae
RIP: 0033:0x7f1984533d78

Lustre: DEBUG MARKER: /home/green/git/lustre-release/lustre/../lnet/utils/lnetctl lnet unconfigure
LNet: 33311:0:(lib-ptl.c:964:lnet_clear_lazy_portal()) Active lazy portal 0 on exit
Lustre: DEBUG MARKER: /home/green/git/lustre-release/lustre/../lnet/utils/lnetctl lnet configure
Lustre: DEBUG MARKER: /home/green/git/lustre-release/lustre/../lnet/utils/lnetctl net add --net tcp --if ens2
LNet: Added LNI 192.168.204.33@tcp [8/256/0/180]