Public bug reported:
On kernel 5.4.0-40-generic in focal I'm getting errors like this on two
machines with different hardware in the first hour after boot:
Jul 04 16:58:32 hostname kernel: BUG: unable to handle page fault for address:
ffff9083e222e632
Jul 04 16:58:32 hostname kernel: #PF: supervisor read access in kernel mode
Jul 04 16:58:32 hostname kernel: #PF: error_code(0x0000) - not-present page
Jul 04 16:58:32 hostname kernel: PGD 3ac205067 P4D 3ac205067 PUD 0
Jul 04 16:58:32 hostname kernel: Oops: 0000 [#1] SMP NOPTI
Jul 04 16:58:32 hostname kernel: CPU: 4 PID: 289 Comm: kworker/u16:4 Tainted: G
OE 5.4.0-40-generic #44-Ubuntu
Jul 04 16:58:32 hostname kernel: Hardware name: LENOVO 20N2CTO1WW/20N2CTO1WW,
BIOS N2IET88W (1.66 ) 04/22/2020
Jul 04 16:58:32 hostname kernel: Workqueue: rpciod rpc_async_schedule [sunrpc]
Jul 04 16:58:32 hostname kernel: RIP: 0010:kmem_cache_alloc+0x7e/0x230
Jul 04 16:58:32 hostname kernel: Code: 99 01 00 00 4d 8b 07 65 49 8b 50 08 65
4c 03 05 40 9d 56 44 4d 8b 20 4d 85 e4 0f 84 85 01 00 00 41 8b 47 20 49 8b 3f
4c 01 e0 <48> 8b 18 48 89 c1 49 33 9f 70 01 00 00 4c 89 e0 48 0f c9 48 31 cb
Jul 04 16:58:32 hostname kernel: RSP: 0018:ffffbc38c046fcc8 EFLAGS: 00010282
Jul 04 16:58:32 hostname kernel: RAX: ffff9083e222e632 RBX: 0000000000000000
RCX: 0000000000000002
Jul 04 16:58:32 hostname kernel: RDX: 0000000000000009 RSI: 0000000000092800
RDI: 0000000000031fb0
Jul 04 16:58:32 hostname kernel: RBP: ffffbc38c046fcf8 R08: ffff90836c331fb0
R09: ffffffffc1436a94
Jul 04 16:58:32 hostname kernel: R10: ffff908368178d2c R11: 0000000000000018
R12: ffff9083e222e632
Jul 04 16:58:32 hostname kernel: R13: 0000000000092800 R14: ffff908367ca6140
R15: ffff908367ca6140
Jul 04 16:58:32 hostname kernel: FS: 0000000000000000(0000)
GS:ffff90836c300000(0000) knlGS:0000000000000000
Jul 04 16:58:32 hostname kernel: CS: 0010 DS: 0000 ES: 0000 CR0:
0000000080050033
Jul 04 16:58:32 hostname kernel: CR2: ffff9083e222e632 CR3: 00000003ab80a003
CR4: 00000000003606e0
Jul 04 16:58:32 hostname kernel: Call Trace:
Jul 04 16:58:32 hostname kernel: ? mempool_alloc_slab+0x17/0x20
Jul 04 16:58:32 hostname kernel: mempool_alloc_slab+0x17/0x20
Jul 04 16:58:32 hostname kernel: mempool_alloc+0x64/0x180
Jul 04 16:58:32 hostname kernel: rpc_malloc+0xa1/0xb0 [sunrpc]
Jul 04 16:58:32 hostname kernel: call_allocate+0xd1/0x1b0 [sunrpc]
Jul 04 16:58:32 hostname kernel: ? call_refreshresult+0x100/0x100 [sunrpc]
Jul 04 16:58:32 hostname kernel: __rpc_execute+0x8c/0x3a0 [sunrpc]
Jul 04 16:58:32 hostname kernel: rpc_async_schedule+0x30/0x50 [sunrpc]
Jul 04 16:58:32 hostname kernel: process_one_work+0x1eb/0x3b0
Jul 04 16:58:32 hostname kernel: worker_thread+0x4d/0x400
Jul 04 16:58:32 hostname kernel: kthread+0x104/0x140
Jul 04 16:58:32 hostname kernel: ? process_one_work+0x3b0/0x3b0
Jul 04 16:58:32 hostname kernel: ? kthread_park+0x90/0x90
Jul 04 16:58:32 hostname kernel: ret_from_fork+0x35/0x40
Jul 04 16:58:32 hostname kernel: Modules linked in: rfcomm rpcsec_gss_krb5
auth_rpcgss nfsv4 nfs lockd grace fscache vboxnetadp(OE) vboxnetflt(OE)
vboxdrv(OE) msr ccm cmac algif_hash algif_skcipher af_alg aufs bnep overlay
nls_iso8859_1 mei_hdcp intel_rapl_msr snd_s>
Jul 04 16:58:32 hostname kernel: nvram ledtrig_audio mei_me cfg80211 mei
processor_thermal_device snd_seq ucsi_acpi typec_ucsi intel_rapl_common
intel_soc_dts_iosf snd_seq_device typec intel_pch_thermal snd_timer snd
int3403_thermal soundcore int340x_thermal_zone i>
Jul 04 16:58:32 hostname kernel: pinctrl_cannonlake video pinctrl_intel
Jul 04 16:58:32 hostname kernel: CR2: ffff9083e222e632
Jul 04 16:58:32 hostname kernel: ---[ end trace cbbaed921eb439ce ]---
Jul 04 16:58:32 hostname kernel: RIP: 0010:kmem_cache_alloc+0x7e/0x230
Jul 04 16:58:32 hostname kernel: Code: 99 01 00 00 4d 8b 07 65 49 8b 50 08 65
4c 03 05 40 9d 56 44 4d 8b 20 4d 85 e4 0f 84 85 01 00 00 41 8b 47 20 49 8b 3f
4c 01 e0 <48> 8b 18 48 89 c1 49 33 9f 70 01 00 00 4c 89 e0 48 0f c9 48 31 cb
Jul 04 16:58:32 hostname kernel: RSP: 0018:ffffbc38c046fcc8 EFLAGS: 00010282
Jul 04 16:58:32 hostname kernel: RAX: ffff9083e222e632 RBX: 0000000000000000
RCX: 0000000000000002
Jul 04 16:58:32 hostname kernel: RDX: 0000000000000009 RSI: 0000000000092800
RDI: 0000000000031fb0
Jul 04 16:58:32 hostname kernel: RBP: ffffbc38c046fcf8 R08: ffff90836c331fb0
R09: ffffffffc1436a94
Jul 04 16:58:32 hostname kernel: R10: ffff908368178d2c R11: 0000000000000018
R12: ffff9083e222e632
Jul 04 16:58:32 hostname kernel: R13: 0000000000092800 R14: ffff908367ca6140
R15: ffff908367ca6140
Jul 04 16:58:32 hostname kernel: FS: 0000000000000000(0000)
GS:ffff90836c300000(0000) knlGS:0000000000000000
Jul 04 16:58:32 hostname kernel: CS: 0010 DS: 0000 ES: 0000 CR0:
0000000080050033
Jul 04 16:58:32 hostname kernel: CR2: ffff9083e222e632 CR3: 00000003ab80a003
CR4: 00000000003606e0
When booting 5.4.0-39-generic the problem does not occur.
** Affects: linux (Ubuntu)
Importance: Undecided
Status: New
** Tags: focal
** Tags added: focal
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https://bugs.launchpad.net/bugs/1886277
Title:
unable to handle page fault in mempool_alloc_slab
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