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kalamlacki opened this issue Feb 23, 2022 · 4 comments
Closed

issue in kernelr 5.16.11 #193

kalamlacki opened this issue Feb 23, 2022 · 4 comments

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@kalamlacki
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Hi!

I get:

BUG: using smp_processor_id() in preemptible [00000000] code: sysctl/1311
[ 20.078493] caller is netflow_scan_and_export+0x268/0x690 [ipt_NETFLOW]
[ 20.078502] CPU: 0 PID: 1311 Comm: sysctl Tainted: G OE 5.16.11 #1
[ 20.078505] Hardware name: To Be Filled By O.E.M. To Be Filled By O.E.M./D1800B-ITX, BIOS P2.10 03/01/2018
[ 20.078507] Call Trace:
[ 20.078509]
[ 20.078511] dump_stack_lvl+0x48/0x5e
[ 20.078516] check_preemption_disabled+0xde/0xe0
[ 20.078521] netflow_scan_and_export+0x268/0x690 [ipt_NETFLOW]
[ 20.078532] protocol_procctl.cold.49+0x2e/0x4f [ipt_NETFLOW]
[ 20.078541] ? netflow_scan_and_export+0x690/0x690 [ipt_NETFLOW]
[ 20.078549] proc_sys_call_handler+0x1b7/0x2c0
[ 20.078554] new_sync_write+0x11f/0x1b0
[ 20.078561] vfs_write+0x20d/0x2a0
[ 20.078566] ksys_write+0x5f/0xe0
[ 20.078571] do_syscall_64+0x3b/0xc0
[ 20.078575] entry_SYSCALL_64_after_hwframe+0x44/0xae
[ 20.078579] RIP: 0033:0x7fc6700d0504
[ 20.078583] Code: 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b3 0f 1f 80 00 00 00 00 48 8d 05 f9 61 0d 00 8b 00 85 c0 75 13 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 54 c3 0f 1f 00 41 54 49 89 d4 55 48 89 f5 53
[ 20.078586] RSP: 002b:00007ffed74abdf8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 20.078590] RAX: ffffffffffffffda RBX: 000055d22caa2560 RCX: 00007fc6700d0504
[ 20.078592] RDX: 0000000000000003 RSI: 000055d22caa48f0 RDI: 0000000000000003
[ 20.078595] RBP: 000055d22caa6900 R08: 00007fc66fd8b7c0 R09: 00007fc66fd8b7c0
[ 20.078597] R10: 000055d22caa2010 R11: 0000000000000246 R12: 00007fc67019d8e0
[ 20.078599] R13: 0000000000000003 R14: 00007fc67019d760 R15: 0000000000000003
[ 20.078604]
[ 20.078607] BUG: using smp_processor_id() in preemptible [00000000] code: sysctl/1311
[ 20.078713] caller is netflow_scan_and_export+0x24b/0x690 [ipt_NETFLOW]
[ 20.078724] CPU: 0 PID: 1311 Comm: sysctl Tainted: G OE 5.16.11 #1
[ 20.078728] Hardware name: To Be Filled By O.E.M. To Be Filled By O.E.M./D1800B-ITX, BIOS P2.10 03/01/2018
[ 20.078730] Call Trace:
[ 20.078732]
[ 20.078735] dump_stack_lvl+0x48/0x5e
[ 20.078740] check_preemption_disabled+0xde/0xe0
[ 20.078746] netflow_scan_and_export+0x24b/0x690 [ipt_NETFLOW]
[ 20.078756] protocol_procctl.cold.49+0x2e/0x4f [ipt_NETFLOW]
[ 20.078766] ? netflow_scan_and_export+0x690/0x690 [ipt_NETFLOW]
[ 20.078774] proc_sys_call_handler+0x1b7/0x2c0
[ 20.078779] new_sync_write+0x11f/0x1b0
[ 20.078786] vfs_write+0x20d/0x2a0
[ 20.078791] ksys_write+0x5f/0xe0
[ 20.078796] do_syscall_64+0x3b/0xc0
[ 20.078800] entry_SYSCALL_64_after_hwframe+0x44/0xae
[ 20.078805] RIP: 0033:0x7fc6700d0504
[ 20.078808] Code: 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b3 0f 1f 80 00 00 00 00 48 8d 05 f9 61 0d 00 8b 00 85 c0 75 13 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 54 c3 0f 1f 00 41 54 49 89 d4 55 48 89 f5 53
[ 20.078812] RSP: 002b:00007ffed74abdf8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 20.078816] RAX: ffffffffffffffda RBX: 000055d22caa2560 RCX: 00007fc6700d0504
[ 20.078818] RDX: 0000000000000003 RSI: 000055d22caa48f0 RDI: 0000000000000003
[ 20.078821] RBP: 000055d22caa6900 R08: 00007fc66fd8b7c0 R09: 00007fc66fd8b7c0
[ 20.078823] R10: 000055d22caa2010 R11: 0000000000000246 R12: 00007fc67019d8e0
[ 20.078825] R13: 0000000000000003 R14: 00007fc67019d760 R15: 0000000000000003
[ 20.078830]
[ 20.078832] BUG: using smp_processor_id() in preemptible [00000000] code: sysctl/1311
[ 20.078901] caller is netflow_scan_and_export+0x268/0x690 [ipt_NETFLOW]
[ 20.078910] CPU: 0 PID: 1311 Comm: sysctl Tainted: G OE 5.16.11 #1
[ 20.078914] Hardware name: To Be Filled By O.E.M. To Be Filled By O.E.M./D1800B-ITX, BIOS P2.10 03/01/2018
[ 20.078915] Call Trace:
[ 20.078917]
[ 20.078919] dump_stack_lvl+0x48/0x5e
[ 20.078925] check_preemption_disabled+0xde/0xe0
[ 20.078930] netflow_scan_and_export+0x268/0x690 [ipt_NETFLOW]
[ 20.078940] protocol_procctl.cold.49+0x2e/0x4f [ipt_NETFLOW]
[ 20.078950] ? netflow_scan_and_export+0x690/0x690 [ipt_NETFLOW]
[ 20.078958] proc_sys_call_handler+0x1b7/0x2c0
[ 20.078963] new_sync_write+0x11f/0x1b0
[ 20.078969] vfs_write+0x20d/0x2a0
[ 20.078974] ksys_write+0x5f/0xe0
[ 20.078979] do_syscall_64+0x3b/0xc0
[ 20.078983] entry_SYSCALL_64_after_hwframe+0x44/0xae
[ 20.078988] RIP: 0033:0x7fc6700d0504
[ 20.078991] Code: 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b3 0f 1f 80 00 00 00 00 48 8d 05 f9 61 0d 00 8b 00 85 c0 75 13 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 54 c3 0f 1f 00 41 54 49 89 d4 55 48 89 f5 53
[ 20.078994] RSP: 002b:00007ffed74abdf8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 20.078999] RAX: ffffffffffffffda RBX: 000055d22caa2560 RCX: 00007fc6700d0504
[ 20.079001] RDX: 0000000000000003 RSI: 000055d22caa48f0 RDI: 0000000000000003
[ 20.079003] RBP: 000055d22caa6900 R08: 00007fc66fd8b7c0 R09: 00007fc66fd8b7c0
[ 20.079006] R10: 000055d22caa2010 R11: 0000000000000246 R12: 00007fc67019d8e0
[ 20.079008] R13: 0000000000000003 R14: 00007fc67019d760 R15: 0000000000000003
[ 20.079013]
[ 20.081003] ipt_NETFLOW protocol version 10 (IPFIX) enabled.

on KERNEL 5.16.11

Best regards,
Łukasz
@kalamlacki
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Hi,

The same issue is in Kernel 5.16.12

BR
Łukasz

@kalamlacki
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https://www.kernel.org/doc/html/latest/locking/preempt-locking.html

@vvfedorenko
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Looks like you have CONFIG_DEBUG_PREEMPT in your kernel config. It's not a good idea to have it production environment.
But anyway, I will propose PR to fix the issue

@vvfedorenko vvfedorenko mentioned this issue Mar 28, 2022
Merged
@aabc
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aabc commented May 9, 2022 •
edited
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Thanks for the report! Proposed fix is merged too.

@aabc aabc closed this as completed May 9, 2022
aabc pushed a commit that referenced this issue May 9, 2022
@vvfedorenko @aabc
Fix preemptive enabled warning
122662f 
Issue 193, we can use unstable reading because we actually don't
care much of actual CPU that executed worker

Link: #193
Link: #197
@aldem aldem mentioned this issue Mar 12, 2023
Open
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@aabc @kalamlacki @vvfedorenko