On my Sun Ultra 45 with two CPUs, Debian does not boot a finished installation using Kernel 5.19. On the 5.16 kernel included on the CD the OS boots just fine if this is selected using GRUB. This also seems to be intermittent, as first booting into 5.19 was stable after trying to use quiet to get an error log after a 5.16 boot, but then rebooting afterwards gave me a more verbose error:
Booting `Debian GNU/Linux'
Loading Linux 5.19.0-2-sparc64-smp ...
Loading initial ramdisk ...
[ 0.684502] pci 0000:05:1d.0: unsupported PM cap regs version (4)
[ 4.937387] BAD IRQ ack 0
[ 5.436972] Kernel panic - not syncing: corrupted stack end detected inside scheduler
[ 5.531706] CPU: 0 PID: 107 Comm: systemd-udevd Not tainted 5.19.0-2-sparc64-smp #1 Debian 5.19.11-1
[ 5.643306] Call Trace:
[ 5.672826] [<0000000000cbe4e8>] dump_stack+0x8/0x18
[ 5.732816] [<0000000000cb7518>] panic+0xf0/0x360
[ 10.067911] ---[ end Kernel panic - not syncing: corrupted stack end detected inside scheduler ]---
Second boot:
Loading Linux 5.19.0-2-sparc64-smp ...
Loading initial ramdisk ...
[ 0.681139] pci 0000:05:1d.0: unsupported PM cap regs version (4)
[ 5.014440] Kernel panic - not syncing: corrupted stack end detected inside scheduler
[ 5.016901] tg3 0000:07:04.1 eth1: Tigon3 [partno(BCM95715) rev 9001] (PCIX:133MHz:64-bit) MAC address 00:14:4f:0f:db:ed
[ 5.016925] tg3 0000:07:04.1 eth1: attached PHY is 5714 (10/100/1000Base-T Ethernet) (WireSpeed[1], EEE[0])
[ 5.016933] tg3 0000:07:04.1 eth1: RXcsums[1] LinkChgREG[0] MIirq[0] ASF[0] TSOcap[1]
[ 5.016941] tg3 0000:07:04.1 eth1: dma_rwctrl[76148000] dma_mask[40-bit]
[ 5.546143] CPU: 0 PID: 117 Comm: systemd-udevd Not tainted 5.19.0-2-sparc64-smp #1 Debian 5.19.11-1
[ 5.675485] Call Trace:
[ 5.710701] [<0000000000cbe4e8>] dump_stack+0x8/0x18
[ 5.782158] [<0000000000cb7518>] panic+0xf0/0x360
[ 5.850408] [<0000000000cc5698>] switch_to_pc+0x834/0x85c
[ 5.927055] [<0000000000cc58e0>] __cond_resched+0x40/0x60
[ 6.003715] [<00000000006bc990>] kmem_cache_alloc_trace+0x430/0x580
[ 6.090777] [<000000001001ab9c>] usb_control_msg+0x1c/0x120 [usbcore]
[ 6.180114] [<000000001000d480>] hub_power_on+0x60/0x180 [usbcore]
[ 6.266426] [<000000001000e0c8>] hub_activate+0x868/0xa00 [usbcore]
[ 6.354029] [<0000000010015638>] hub_probe+0xeb8/0xf20 [usbcore]
[ 6.438467] [<000000001001fda8>] usb_probe_interface+0xe8/0x300 [usbcore]
[ 6.532373] [<00000000009e8c48>] really_probe+0xc8/0x480
[ 6.608355] [<00000000009e9124>] __driver_probe_device+0x124/0x180
[ 6.694905] [<00000000009e91a8>] driver_probe_device+0x28/0xe0
[ 6.777256] [<00000000009e995c>] __device_attach_driver+0x9c/0x140
[ 6.863759] [<00000000009e6568>] bus_for_each_drv+0x68/0xc0
[ 6.942884] [<00000000009e94c0>] __device_attach+0xa0/0x200
[ 7.022122] Press Stop-A (L1-A) from sun keyboard or send break
[ 7.022122] twice on console to return to the boot prom
[ 7.022158] kernel BUG at kernel/cpu.c:1092!
[ 7.022174] \|/ ____ \|/
[ 7.022174] "@'/ .. \`@"
[ 7.022174] /_| \__/ |_\
[ 7.022174] \__U_/
[ 7.022178] swapper/1(0): Kernel bad sw trap 5 [#1]
[ 7.022185] CPU: 1 PID: 0 Comm: swapper/1 Not tainted 5.19.0-2-sparc64-smp #1 Debian 5.19.11-1
[ 7.022195] TSTATE: 0000004411e01604 TPC: 0000000000470074 TNPC: 0000000000470078 Y: 0000000a Not tainted
[ 7.022201] TPC: <cpuhp_report_idle_dead+0x74/0x80>
[ 7.022220] g0: 0000000000ccc140 g1: 0000000000ff2908 g2: 0000000000ff2908 g3: 00000000000002f6
[ 7.022225] g4: fff0000200261600 g5: fff000037e8c4000 g6: fff00002002a0000 g7: 000000000000000e
[ 7.022229] o0: 0000000000e2d220 o1: 0000000000000444 o2: 0000000000004000 o3: 0000000000000001
[ 7.022234] o4: 000000018701a800 o5: 000000000000000e sp: fff00002002a3481 ret_pc: 000000000047006c
[ 7.022238] RPC: <cpuhp_report_idle_dead+0x6c/0x80>
[ 7.022244] l0: 0000000000001000 l1: 0000004411001603 l2: 000000000092979c l3: 0000000000000400
[ 7.022249] l4: 0000000000000000 l5: 0000000000000000 l6: 0000000000000000 l7: 0000000000000008
[ 7.022252] i0: 000000000000000e i1: fff00002002a0008 i2: 0000000000004000 i3: fff000037fa00e68
[ 7.022257] i4: fff000037e8c4000 i5: 000000000113ce68 i6: fff00002002a3531 i7: 00000000004be388
[ 7.022261] I7: <do_idle+0x168/0x1a0>
[ 7.022271] Call Trace:
[ 7.022273] [<00000000004be388>] do_idle+0x168/0x1a0
[ 7.022280] [<00000000004be684>] cpu_startup_entry+0x24/0x40
[ 7.022286] [<000000000044080c>] smp_callin+0xec/0x120
[ 7.022293] [<0000000000f6c3d4>] 0xf6c3d4
[ 7.022300] [<0000000080000000>] 0x80000000
[ 7.022306] Caller[00000000004be388]: do_idle+0x168/0x1a0
[ 7.022311] Caller[00000000004be684]: cpu_startup_entry+0x24/0x40
[ 7.022316] Caller[000000000044080c]: smp_callin+0xec/0x120
[ 7.022322] Caller[0000000000f6c3d4]: 0xf6c3d4
[ 7.022326] Caller[0000000080000000]: 0x80000000
[ 7.022330] Instruction DUMP:
[ 7.022332] 92102444
[ 7.022335] 7ffee2ed
[ 7.022337] 90122220
[ 7.022339] <91d02005>
[ 7.022341] 01000000
[ 7.022343] 01000000
[ 7.022345] 9de3bf50
[ 7.022347] 01000000
[ 7.022349] 3b003dbc
[ 7.022351]
[ 10.057417] ---[ end Kernel panic - not syncing: corrupted stack end detected inside scheduler ]---