#991978 zram-tools: running zramswap with kernel 5.10.52 #1441 result in cpu warning

Package:
zram-tools
Source:
zram-tools
Submitter:
UN-pi
Date:
2021-08-07 10:30:03 UTC
Severity:
normal
Tags:
#991978#5
Date:
2021-08-07 10:26:50 UTC
From:
To:
Dear Maintainer,

*** Reporter, please consider answering these questions, where appropriate ***

   * What led up to the situation?
zramswap was running before #1441 without problems
   * What exactly did you do (or not do) that was effective (or
     ineffective)?
after installting kernel update #1441 the system was running for ca. 2 days.
   * What was the outcome of this action?
Aug  7 07:30:01 nextcloudpi kernel: [120894.788674] ------------[ cut here ]------------
Aug  7 07:30:01 nextcloudpi kernel: [120894.788712] WARNING: CPU: 3 PID: 14802 at kernel/rcu/tree_plugin.h:297 rcu_note_context_switch+0x64/0x428
Aug  7 07:30:01 nextcloudpi kernel: [120894.788715] Modules linked in: binfmt_misc zram zsmalloc md4 md5 nls_utf8 cifs libarc4 nft_ct tun cfg80211 rfkill 8021q garp stp llc sg vc4 cec v3d bcm283
Aug  7 07:30:01 nextcloudpi kernel: [120894.788906]  sha256_generic aes_neon_blk crypto_simd cryptd ip_tables x_tables ipv6 [last unloaded: zsmalloc]
Aug  7 07:30:01 nextcloudpi kernel: [120894.788931] CPU: 3 PID: 14802 Comm: cron Tainted: G         C        5.10.52-v8+ #1441
Aug  7 07:30:01 nextcloudpi kernel: [120894.788934] Hardware name: Raspberry Pi 4 Model B Rev 1.2 (DT)
Aug  7 07:30:01 nextcloudpi kernel: [120894.788940] pstate: 20000085 (nzCv daIf -PAN -UAO -TCO BTYPE=--)
Aug  7 07:30:01 nextcloudpi kernel: [120894.788945] pc : rcu_note_context_switch+0x64/0x428
Aug  7 07:30:01 nextcloudpi kernel: [120894.788949] lr : rcu_note_context_switch+0x54/0x428
Aug  7 07:30:01 nextcloudpi kernel: [120894.788951] sp : ffffffc013bd3ac0
Aug  7 07:30:01 nextcloudpi kernel: [120894.788954] x29: ffffffc013bd3ac0 x28: ffffff806b771e40.
Aug  7 07:30:01 nextcloudpi kernel: [120894.788961] x27: 0000000000000000 x26: ffffffc011476000.
Aug  7 07:30:01 nextcloudpi kernel: [120894.788968] x25: 0000000000000000 x24: ffffff807fbbf240.
Aug  7 07:30:01 nextcloudpi kernel: [120894.788973] x23: 0000000000000000 x22: ffffff806b771e40.
Aug  7 07:30:01 nextcloudpi kernel: [120894.788979] x21: ffffffc011462328 x20: ffffffc011298948.
Aug  7 07:30:01 nextcloudpi kernel: [120894.788986] x19: ffffff807fbbfec0 x18: 0000000000000000.
Aug  7 07:30:01 nextcloudpi kernel: [120894.788991] x17: 0000000000000000 x16: 0000000000000000.
Aug  7 07:30:01 nextcloudpi kernel: [120894.788997] x15: 0000000000000000 x14: 0000000000000000.
Aug  7 07:30:01 nextcloudpi kernel: [120894.789003] x13: 0000000000000000 x12: 0000000000000000.
Aug  7 07:30:01 nextcloudpi kernel: [120894.789009] x11: 0000000000000000 x10: 0000000000000000.
Aug  7 07:30:01 nextcloudpi kernel: [120894.789015] x9 : ffffffc010acffb8 x8 : 0000000000000000.
Aug  7 07:30:01 nextcloudpi kernel: [120894.789021] x7 : 0000000000000000 x6 : ffffffc013bd3ab0.
Aug  7 07:30:01 nextcloudpi kernel: [120894.789026] x5 : 0000000000000001 x4 : ffffffc06ebe3000.
Aug  7 07:30:01 nextcloudpi kernel: [120894.789033] x3 : 0000000000000001 x2 : ffffffc010fc7000.
Aug  7 07:30:01 nextcloudpi kernel: [120894.789039] x1 : ffffffc06ebe3000 x0 : 0000000000000001.
Aug  7 07:30:01 nextcloudpi kernel: [120894.789046] Call trace:
Aug  7 07:30:01 nextcloudpi kernel: [120894.789051]  rcu_note_context_switch+0x64/0x428
Aug  7 07:30:01 nextcloudpi kernel: [120894.789060]  __schedule+0xc8/0x818
Aug  7 07:30:01 nextcloudpi kernel: [120894.789063]  schedule+0x48/0x100
Aug  7 07:30:01 nextcloudpi kernel: [120894.789066]  io_schedule+0x24/0xb0
Aug  7 07:30:01 nextcloudpi kernel: [120894.789072]  __lock_page_or_retry+0x1cc/0x498
Aug  7 07:30:01 nextcloudpi kernel: [120894.789077]  do_swap_page+0x1f4/0x700
Aug  7 07:30:01 nextcloudpi kernel: [120894.789081]  handle_mm_fault+0x4a8/0xcb8
Aug  7 07:30:01 nextcloudpi kernel: [120894.789085]  do_page_fault+0x148/0x3e8
Aug  7 07:30:01 nextcloudpi kernel: [120894.789089]  do_translation_fault+0x58/0x70
Aug  7 07:30:01 nextcloudpi kernel: [120894.789095]  do_mem_abort+0x48/0xa8
Aug  7 07:30:01 nextcloudpi kernel: [120894.789099]  el0_da+0x40/0x58
Aug  7 07:30:01 nextcloudpi kernel: [120894.789104]  el0_sync_handler+0x68/0xb8
Aug  7 07:30:01 nextcloudpi kernel: [120894.789108]  el0_sync+0x180/0x1c0
Aug  7 07:30:01 nextcloudpi kernel: [120894.789112] ---[ end trace 586c9eec844f90cf ]---

   * What outcome did you expect instead?
normal operation
*** End of the template - remove these template lines ***