On 2021-05-17 11:14, Stefan Agner wrote:

Hi,

We are currently testing a new release using Linux 5.10.33. I've
received since several reports of random reboots every couple of days.
Unfortunately the log (journald) doesn't show anything, just a hard cut
at some point.

After running serial console on several instances, I was able to catch
this stack trace:

[202983.988153] SError Interrupt on CPU3, code 0xbf000000 -- SError
[202983.988155] CPU: 3 PID: 3463 Comm: mdns-repeater Not tainted 5.10.33
#1
[202983.988156] Hardware name: Hardkernel ODROID-N2Plus (DT)
[202983.988157] pstate: 80000005 (Nzcv daif -PAN -UAO -TCO BTYPE=--)
[202983.988158] pc : udp_send_skb.isra.0+0x178/0x390
[202983.988159] lr : udp_send_skb.isra.0+0x130/0x390
[202983.988160] sp : ffff8000132a3ae0
[202983.988160] x29: ffff8000132a3ae0 x28: ffff8000132a3bf0
[202983.988164] x27: 00000000fb0000e0 x26: ffff8000132a3d58
[202983.988165] x25: 0000000000000073 x24: ffff000007963e24
[202983.988167] x23: ffff8000132a3bf0 x22: ffff000005a72a80
[202983.988169] x21: 0000000000000011 x20: 0000000000000073
[202983.988170] x19: ffff000001a92c00 x18: 0000000000000001
[202983.988172] x17: 0000000000000000 x16: 0000000000000000
[202983.988173] x15: ffff8000132a3460 x14: 00000000ac1e2001
[202983.988175] x13: ffff0000079181a0 x12: 0000000000000028
[202983.988176] x11: ffff8000d3407000 x10: ffff800010ea8af0
[202983.988178] x9 : 000000000000001b x8 : ffff000007963e00
[202983.988179] x7 : ffff000000000000 x6 : 0000046a76b5fe28
[202983.988181] x5 : 0000000000941cc2 x4 : 0000000000000000
[202983.988182] x3 : 0000000000000001 x2 : ffff8000d3407000
[202983.988184] x1 : ffff00002f6e0000 x0 : 0000000100000001
[202983.988186] Kernel panic - not syncing: Asynchronous SError
Interrupt
[202983.988187] CPU: 3 PID: 3463 Comm: mdns-repeater Not tainted 5.10.33
#1
[202983.988187] Hardware name: Hardkernel ODROID-N2Plus (DT)
[202983.988188] Call trace:
[202983.988188]  dump_backtrace+0x0/0x1a0
[202983.988189]  show_stack+0x18/0x70
[202983.988190]  dump_stack+0xd0/0x12c
[202983.988190]  panic+0x170/0x338
[202983.988191]  nmi_panic+0x8c/0x90
[202983.988191]  arm64_serror_panic+0x78/0x84
[202983.988192]  do_serror+0x38/0xa0
[202983.988193]  el1_error+0x88/0x108
[202983.988193]  udp_send_skb.isra.0+0x178/0x390
[202983.988194]  udp_sendmsg+0x7c8/0x9c0
[202983.988194]  inet_sendmsg+0x44/0x70
[202983.988195]  sock_sendmsg+0x4c/0x60
[202983.988196]  __sys_sendto+0xd0/0x140
[202983.988196]  __arm64_sys_sendto+0x28/0x40
[202983.988197]  el0_svc_common.constprop.0+0x78/0x1a0
[202983.988197]  do_el0_svc+0x24/0x90
[202983.988198]  el0_svc+0x14/0x20
[202983.988199]  el0_sync_handler+0xb0/0xc0
[202983.988199]  el0_sync+0x178/0x180
[202983.988211] SMP: stopping secondary CPUs
[202983.988212] Kernel Offset: disabled
[202983.988212] CPU features: 0x0240002,61082004
[202983.988213] Memory Limit: none

A second stack trace, same build etc. but different board (instance):

[48112.247242] SError Interrupt on CPU5, code 0xbf000000 -- SError
[48112.247244] CPU: 5 PID: 264945 Comm: python3 Not tainted 5.10.33 #1
[48112.247245] Hardware name: Hardkernel ODROID-N2Plus (DT)
[48112.247246] pstate: 40000005 (nZcv daif -PAN -UAO -TCO BTYPE=--)
[48112.247247] pc : __rcu_read_lock+0x18/0x20
[48112.247248] lr : lock_page_memcg+0x28/0xd0
[48112.247249] sp : ffff800013e238e0
[48112.247249] x29: ffff800013e238e0 x28: ffff800013e23b18
[48112.247252] x27: ffff000055c5c780 x26: 0000ffff9163c000
[48112.247254] x25: ffff0000053000c0 x24: 00e00000d40e3bc3
[48112.247256] x23: fffffe00033038c0 x22: ffff800013e23a18
[48112.247257] x21: 0000ffff9163b000 x20: fffffe00033038c0
[48112.247259] x19: fffffe00033038c0 x18: 0000000000000000
[48112.247261] x17: 0000000000000000 x16: 0000000000000000
[48112.247262] x15: 0000000000000002 x14: 0000000000000001
[48112.247264] x13: fffffe0001acdd08 x12: 0000000000000000
[48112.247265] x11: ffff0000e4650100 x10: ffff00004c640000
[48112.247267] x9 : 000000000000000c x8 : 00000000ffffffff
[48112.247268] x7 : 0000000000000020 x6 : 0000000000000000
[48112.247270] x5 : 00000000000d40e3 x4 : 0000ffff9163b000
[48112.247271] x3 : 00000000ffffffff x2 : 0000000000000001
[48112.247273] x1 : ffff000000182ac0 x0 : 0000000000000001
[48112.247275] Kernel panic - not syncing: Asynchronous SError Interrupt
[48112.247275] CPU: 5 PID: 264945 Comm: python3 Not tainted 5.10.33 #1
[48112.247276] Hardware name: Hardkernel ODROID-N2Plus (DT)
[48112.247277] Call trace:
[48112.247277]  dump_backtrace+0x0/0x1a0
[48112.247278]  show_stack+0x18/0x70
[48112.247279]  dump_stack+0xd0/0x12c
[48112.247279]  panic+0x170/0x338
[48112.247280]  nmi_panic+0x8c/0x90
[48112.247280]  arm64_serror_panic+0x78/0x84
[48112.247281]  do_serror+0x38/0xa0
[48112.247281]  el1_error+0x88/0x108
[48112.247282]  __rcu_read_lock+0x18/0x20
[48112.247283]  page_remove_rmap+0x1c/0x560
[48112.247283]  unmap_page_range+0x5b0/0x7b0
[48112.247284]  unmap_single_vma+0x4c/0xb0
[48112.247285]  unmap_vmas+0x70/0xf0
[48112.247285]  exit_mmap+0xc8/0x180
[48112.247286]  mmput+0x7c/0x150
[48112.247286]  begin_new_exec+0x2d4/0xa90
[48112.247287]  load_elf_binary+0x38c/0x1800
[48112.247288]  bprm_execve+0x29c/0x5d0
[48112.247288]  do_execveat_common.isra.0+0x178/0x1d0
[48112.247289]  __arm64_sys_execve+0x40/0x60
[48112.247290]  el0_svc_common.constprop.0+0x78/0x1a0
[48112.247290]  do_el0_svc+0x24/0x90
[48112.247291]  el0_svc+0x14/0x20
[48112.247291]  el0_sync_handler+0xb0/0xc0
[48112.247292]  el0_sync+0x178/0x180
[48112.247303] SMP: stopping secondary CPUs
[48112.247304] Kernel Offset: disabled
[48112.247305] CPU features: 0x0240002,61082004
[48112.247305] Memory Limit: none

The stack trace does not look related to me...

--
Stefan

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