This is very repeatable and I have done this over and over to look
at the output messages on the console :

phobos# apt-get upgrade
E: dpkg was interrupted, you must manually run 'dpkg --configure -a' to
correct the problem.
phobos# dpkg --configure -a
Setting up grub-ieee1275 (2.04-9) ...
[ 4458.342137] watchdog: BUG: soft lockup - CPU#0 stuck for 23s! [grub-probe:916]
[ 4458.437149] Modules linked in: drm(E) drm_panel_orientation_quirks(E) i2c_core(E) sg(E) envctrl(E) display7seg(E) flash(E) ip_tables(E)
x_tables(E) autofs4(E) ext4(E) crc16(E) mbcache(E) jbd2(E)
crc32c_generic(E) sd_mod(E) ata_generic(E) pata_cmd64x(E) libata(E) sym53c8xx(E) scsi_transport_spi(E) sunhme(E) scsi_mod(E)
[ 4458.807960] CPU: 0 PID: 916 Comm: grub-probe Tainted: G E
5.5.0-2-sparc64 #1 Debian 5.5.17-1
[ 4458.936131] TSTATE: 0000000011001605 TPC: 00000000008804ec TNPC: 00000000008804f0 Y: 00000000 Tainted: G E
[ 4459.083802] TPC: <misc_open+0x4c/0x180>
[ 4459.134194] g0: 0000000000000000 g1: 0000000010032838 g2:
0000000000000000 g3: 0000000003581820
[ 4459.248577] g4: fffff8003befd3c0 g5: 000000005f8bcbd1 g6:
fffff80037ea4000 g7: 000000000dd33530
[ 4459.363056] o0: 0000000000d9c458 o1: fffff80037ea790c o2:
fffff8003a2559d0 o3: 0000000000000000
[ 4459.477535] o4: 0000000000000000 o5: 0000000000000000 sp:
fffff80037ea6fa1 ret_pc: 00000000008804c0
[ 4459.596594] RPC: <misc_open+0x20/0x180>
[ 4459.647013] l0: 0000000000d9c400 l1: 0000000000000000 l2:
000000000063a500 l3: 00000000eff80000
[ 4459.761416] l4: 0000000000000000 l5: ffffffffffffff9c l6:
fffff80037ea4000 l7: 0000000000632b60
[ 4459.875884] i0: fffff80037f66ad8 i1: fffff80037eab900 i2:
0000000000d9c400 i3: 0000000000d9c470
[ 4459.990362] i4: 00000000000000ec i5: 0000000010032820 i6:
fffff80037ea7051 i7: 000000000063b0f8
[ 4460.104849] I7: <chrdev_open+0x78/0x160>
[ 4460.156399] Call Trace:
[ 4460.188433] [000000000063b0f8] chrdev_open+0x78/0x160
[ 4460.256043] [0000000000631398] do_dentry_open+0x158/0x440
[ 4460.328183] [00000000006326e8] vfs_open+0x28/0x40
[ 4460.391204] [0000000000646658] path_openat+0x4d8/0x1420
[ 4460.461070] [00000000006486b0] do_filp_open+0x50/0xc0
[ 4460.528650] [0000000000632a30] do_sys_open+0x170/0x260
[ 4460.597379] [0000000000632b80] sys_openat+0x20/0x40
[ 4460.662688] [0000000000406154] linux_sparc_syscall+0x34/0x44
~
Type 'go' to resume
ok

Not sure if there is a way to fix this or if it is already known.


--
Dennis Clarke
RISC-V/SPARC/PPC/ARM/CISC
UNIX and Linux spoken
GreyBeard and suspenders optional

--- SoupGate-Win32 v1.05
* Origin: fsxNet Usenet Gateway (21:1/5)