From: Per Oberg <pero@wolfram.com>
To: xenomai@lists.linux.dev
Subject: RTNet unable to handle kernel NULL pointer dereference at 0000000000000068
Date: Wed, 4 Oct 2023 03:45:26 -0500 (CDT) [thread overview]
Message-ID: <1516654157.3383261.1696409126391.JavaMail.zimbra@wolfram.com> (raw)
Hi list
I experienced a crash with Xenomai-3.1 on Linux 4.19.114-cip24
It does not seem to be the end of the world though because things were not immediately broken for me and I can't reproduce it.
Any thoughts ?
[ 129.326872] RTnet: registered rteth1
[ 129.326874] rt_igb 0000:02:00.0: Intel(R) Gigabit Ethernet Network Connection
[ 129.326875] rt_igb 0000:02:00.0: rteth1: (PCIe:2.5Gb/s:Width x1) 00:1b:21:e0:b6:31
[ 129.327002] rt_igb 0000:02:00.0: rteth1: PBA No: G69016-005
[ 129.327003] rt_igb 0000:02:00.0: Using MSI-X interrupts. 1 rx queue(s), 1 tx queue(s)
[ 321.182356] rt_igb: rteth1: igb: rteth1 NIC Link is Up 1000 Mbps Full Duplex, Flow Control: RX
[ 361.783381] [Xenomai] switching rtnet-rtpc to secondary mode after exception #14 in kernel-space at 0xffffffffc03855a0 (pid 1445)
[ 361.783386] BUG: unable to handle kernel NULL pointer dereference at 0000000000000068
[ 361.783415] PGD 0 P4D 0
[ 361.783428] Oops: 0000 [#1] PREEMPT SMP PTI
[ 361.784109] CPU: 2 PID: 1445 Comm: rtnet-rtpc Tainted: G W O 4.19.114-cip24-xeno-cobolt #1
[ 361.784809] Hardware name: Default string Default string/SKYBAY, BIOS 5.11 09/22/2016
[ 361.785504] I-pipe domain: Linux
[ 361.786214] RIP: 0010:rtdev_reference+0x0/0x70 [rtnet]
[ 361.786911] Code: 00 eb e0 48 89 ef e8 ff 25 00 00 89 de 48 c7 c7 19 cf 38 c0 e8 da fb 91 c1 eb c8 0f 1f 44 00 00 66 2e 0f 1f 84 00 00 00 00 00 <48> 8b 57 68 48 85 d2 74 52 53 8b 47 5c 85 c0 74 19 8d 50 01 48 8d
[ 361.787708] RSP: 0018:ffff947dc01a7df0 EFLAGS: 00010206
[ 361.788516] RAX: 000000000000587e RBX: 0000000000000000 RCX: 0000000000000000
[ 361.789333] RDX: 0000000083ca0000 RSI: 0000000000001a00 RDI: 0000000000000000
[ 361.790153] RBP: ffff891e64a4c058 R08: ffff891e617e8138 R09: 0000000000000002
[ 361.790980] R10: 0000000000000000 R11: 00000000000005dc R12: ffff891e617e8110
[ 361.791812] R13: 0000000000025540 R14: ffff891e64a4c278 R15: ffff891e617e8000
[ 361.792646] FS: 0000000000000000(0000) GS:ffff891e65b00000(0000) knlGS:0000000000000000
[ 361.793490] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 361.794334] CR2: 0000000000000068 CR3: 0000000051c0a005 CR4: 00000000003606e0
[ 361.795182] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 361.796026] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 361.796869] Call Trace:
[ 361.797721] rt_tcp_segment.constprop.21+0x1ca/0x510 [rttcp]
[ 361.798557] rt_tcp_send+0x3e/0xd0 [rttcp]
[ 361.799411] ? rtdm_event_timedwait+0x181/0x320
[ 361.800271] rtpc_dispatch_handler+0xd4/0x1f0 [rtnet]
[ 361.801137] ? xnthread_map+0x370/0x370
[ 361.802002] kthread_trampoline+0x77/0x133
[ 361.802868] kthread+0x10e/0x130
[ 361.803716] ? kthread_create_worker_on_cpu+0x70/0x70
[ 361.804591] ret_from_fork+0x36/0x50
[ 361.805464] Modules linked in: rttcp rtpacket rtudp rtipv4 igb rt_igb rtnet x86_pkg_temp_thermal e1000e pcan(O)
[ 361.806378] CR2: 0000000000000068
[ 361.807284] ---[ end trace a94628c3ed940012 ]---
[ 361.808201] RIP: 0010:rtdev_reference+0x0/0x70 [rtnet]
[ 361.809144] Code: 00 eb e0 48 89 ef e8 ff 25 00 00 89 de 48 c7 c7 19 cf 38 c0 e8 da fb 91 c1 eb c8 0f 1f 44 00 00 66 2e 0f 1f 84 00 00 00 00 00 <48> 8b 57 68 48 85 d2 74 52 53 8b 47 5c 85 c0 74 19 8d 50 01 48 8d
[ 361.810147] RSP: 0018:ffff947dc01a7df0 EFLAGS: 00010206
[ 361.811161] RAX: 000000000000587e RBX: 0000000000000000 RCX: 0000000000000000
[ 361.812184] RDX: 0000000083ca0000 RSI: 0000000000001a00 RDI: 0000000000000000
[ 361.813207] RBP: ffff891e64a4c058 R08: ffff891e617e8138 R09: 0000000000000002
[ 361.814222] R10: 0000000000000000 R11: 00000000000005dc R12: ffff891e617e8110
[ 361.815248] R13: 0000000000025540 R14: ffff891e64a4c278 R15: ffff891e617e8000
[ 361.816246] FS: 0000000000000000(0000) GS:ffff891e65b00000(0000) knlGS:0000000000000000
[ 361.817247] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 361.818213] CR2: 0000000000000068 CR3: 0000000051c0a005 CR4: 00000000003606e0
[ 361.819152] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 361.820047] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Regards
Per Öberg
next reply other threads:[~2023-10-04 8:45 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-10-04 8:45 Per Oberg [this message]
2023-10-04 9:42 ` RTNet unable to handle kernel NULL pointer dereference at 0000000000000068 Jan Kiszka
2023-10-04 13:01 ` Per Oberg
2023-10-04 13:57 ` Jan Kiszka
2023-10-04 14:15 ` Per Oberg
2023-10-05 14:19 ` Per Oberg
2023-10-05 14:21 ` Jan Kiszka
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