Verified on moonshot node "" with the proposed kernel 5.0.0-40
OK ] Unmounted Mount unit for core, revision 8271.
[ OK ] Unmounted /boot.
[ OK ] Unmounted /run/snapd/ns/lxd.mnt.
Unmounting /run/snapd/ns...
[ OK ] Unmounted /run/snapd/ns.
[ OK ] Stopped target Local File Systems (Pre).
[ OK ] Stopped Create Static Device Nodes in /dev.
[ OK ] Stopped Create System Users.
Stopping Monitoring of LVM…meventd or progress polling...
[ OK ] Stopped target Swap.
Deactivating swap /swap.img...
[ OK ] Stopped Monitoring of LVM2… dmeventd or progress polling.
[ OK ] Deactivated swap /swap.img.
[ OK ] Reached target Unmount All Filesystems.
[ OK ] Stopped Remount Root and Kernel File Systems.
[ OK ] Reached target Shutdown.
[ OK ] Reached target Final Step.
[ OK ] Started Reboot.
[ OK ] Reached target Reboot.
Stopping LVM2 metadata daemon...
[ 195.186614] reboot: Restarting system
Reboot process is good, thanks!
** Tags removed: verification-needed-disco
** Tags added: verification-done-disco
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https://bugs.launchpad.net/bugs/1859582
Title:
System hang with kernel traces while entering reboot process on a
Disco ARM64 moonshot node
Status in linux package in Ubuntu:
Invalid
Status in linux source package in Disco:
Fix Committed
Bug description:
This issue occurs on a Moonshot node, the node was just deployed by
MAAS, but it never came back after the reboot command.
Here is the console output:
[ OK ] Started Reboot.
[ OK ] Reached target Reboot.
[ 450.084108] kernel BUG at mm/slub.c:305!
[ 450.131160] Internal error: Oops - BUG: 0 [#1] SMP
[ 450.188640] Modules linked in: dm_multipath scsi_dh_rdac scsi_dh_emc
scsi_dh_alua gpio_keys_polled input_polldev crct10dif_ce xgene_rng
mailbox_xgene_slimpro uio_pdrv_genirq uio sch_fq_codel ib_iser rdma_cm iw_cm
ib_cm iscsi_tcp libiscsi_tcp libiscsi scsi_transport_iscsi ip_tables x_tables
autofs4 btrfs zstd_compress raid10 raid456 async_raid6_recov async_memcpy
async_pq async_xor async_tx xor xor_neon raid6_pq libcrc32c raid1 raid0
multipath linear mlx4_ib ib_uverbs ib_core mlx4_en mlx4_core gpio_dwapb devlink
ahci_xgene gpio_xgene_sb
[ 450.758357] Process shutdown (pid: 1, stack limit = 0x00000000cb9d7b95)
[ 450.837642] CPU: 2 PID: 1 Comm: shutdown Not tainted 5.0.0-38-generic
#41-Ubuntu
[ 450.926416] Hardware name: HP ProLiant m400 Server Cartridge (DT)
[ 450.999441] pstate: 60400005 (nZCv daif +PAN -UAO)
[ 451.056823] pc : __slab_free+0x170/0x3d8
[ 451.103865] lr : kfree+0x1b4/0x1c8
[ 451.144549] sp : ffff000017c2b950
[ 451.184190] x29: ffff000017c2b950 x28: ffff00001173c708
[ 451.247825] x27: 0000000000000010 x26: ffff7e003e700220
[ 451.311461] x25: 0000000000000002 x24: ffff800f9c00a000
[ 451.375095] x23: ffff800ff6003800 x22: 0000000000000000
[ 451.438731] x21: 0000000080200008 x20: ffff800f9c00a000
[ 451.502365] x19: ffff7e003e700200 x18: 0000000000000000
[ 451.566001] x17: 0000000000000000 x16: 0000000000000000
[ 451.629637] x15: ffff000010fb7f30 x14: ffff800fab1ef390
[ 451.693271] x13: ffff800ff5a59020 x12: 0000000000000000
[ 451.756906] x11: ffff800ff5a58ff8 x10: 0000000000000040
[ 451.820542] x9 : ffff800fab1ef398 x8 : 0000000000000001
[ 451.884178] x7 : ffff800f9c00a000 x6 : 0000000000000001
[ 451.947812] x5 : 0000000000210d00 x4 : 0000000000000001
[ 452.011448] x3 : ffff800f9c00a000 x2 : 0000000000000000
[ 452.075083] x1 : 0000000040000000 x0 : 0000000000210d00
[ 452.138719] Call trace:
[ 452.167930] __slab_free+0x170/0x3d8
[ 452.210700] kfree+0x1b4/0x1c8
[ 452.247217] cm_remove_one+0x21c/0x2b0 [ib_cm]
[ 452.300540] ib_unregister_device+0x100/0x218 [ib_core]
[ 452.363237] mlx4_ib_remove+0x84/0x1f8 [mlx4_ib]
[ 452.418655] mlx4_remove_device+0xcc/0xf8 [mlx4_core]
[ 452.479272] mlx4_unregister_device+0x84/0x158 [mlx4_core]
[ 452.545104] mlx4_unload_one+0x88/0x2c8 [mlx4_core]
[ 452.603634] mlx4_shutdown+0x70/0x88 [mlx4_core]
[ 452.659025] pci_device_shutdown+0x44/0x88
[ 452.708159] device_shutdown+0x134/0x240
[ 452.755207] kernel_restart_prepare+0x44/0x50
[ 452.807469] kernel_restart+0x20/0x68
[ 452.851284] __se_sys_reboot+0x10c/0x230
[ 452.898228] __arm64_sys_reboot+0x24/0x30
[ 452.946216] el0_svc_common+0xa0/0x168
[ 452.991073] el0_svc_handler+0x38/0x78
[ 453.035930] el0_svc+0x8/0xc
[ 453.070357] Code: 8b020303 eb14031f 54fff921 d503201f (d4210000)
[ 453.143490] ---[ end trace 6177acd8b3b927ab ]---
[ 453.201910] printk: shutdown: 4 output lines suppressed due to ratelimiting
[ 453.285555] Kernel panic - not syncing: Attempted to kill init!
exitcode=0x0000000b
[ 453.377460] Kernel Offset: disabled
[ 453.419286] CPU features: 0x000,20802000
[ 453.466230] Memory Limit: none
[ 453.502745] ---[ end Kernel panic - not syncing: Attempted to kill init!
exitcode=0x0000000b ]---
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