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Date: Thu, 16 Nov 2023 16:17:36 +0200 From: Martin Zaharinov <micron10@...il.com> To: Eric Dumazet <edumazet@...gle.com> Cc: netdev <netdev@...r.kernel.org>, Paolo Abeni <pabeni@...hat.com>, patchwork-bot+netdevbpf@...nel.org, Jakub Kicinski <kuba@...nel.org>, Stephen Hemminger <stephen@...workplumber.org>, kuba+netdrv@...nel.org, dsahern@...il.com Subject: Re: Urgent Bug Report Kernel crash 6.5.2 Hi All report same problem with kernel 6.6.1 - i think problem is in rcu but … if have options to add people from RCU here. See report : [141229.505339] ------------[ cut here ]------------ [141229.505492] rcuref - imbalanced put() [141229.505504] WARNING: CPU: 8 PID: 0 at lib/rcuref.c:267 rcuref_put_slowpath (lib/rcuref.c:267 (discriminator 1)) [141229.505821] Modules linked in: xsk_diag unix_diag iptable_filter xt_TCPMSS iptable_mangle xt_addrtype xt_nat xt_MASQUERADE iptable_nat ip_tables netconsole coretemp e1000 ixgbe mdio pppoe pppox sha1_ssse3 sha1_generic ppp_mppe libarc4 ppp_generic slhc nf_nat_sip nf_conntrack_sip nf_nat_pptp nf_conntrack_pptp nf_nat_tftp nf_conntrack_tftp nf_nat_ftp nf_conntrack_ftp nf_nat nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 [141229.506349] CPU: 8 PID: 0 Comm: swapper/8 Tainted: G O 6.6.1 #1 [141229.506527] Hardware name: Persy Super Server/X11DDW-L, BIOS 4.0 07/11/2023 [141229.506701] RIP: 0010:rcuref_put_slowpath (lib/rcuref.c:267 (discriminator 1)) [141229.506843] Code: 31 c0 eb e2 80 3d ef 4e e6 00 00 74 0a c7 03 00 00 00 e0 31 c0 eb cf 48 c7 c7 07 99 e3 97 c6 05 d5 4e e6 00 01 e8 d1 1f c7 ff <0f> 0b eb df cc cc cc cc cc cc cc cc cc cc cc cc cc 48 89 fa 83 e2 All code ======== 0: 31 c0 xor %eax,%eax 2: eb e2 jmp 0xffffffffffffffe6 4: 80 3d ef 4e e6 00 00 cmpb $0x0,0xe64eef(%rip) # 0xe64efa b: 74 0a je 0x17 d: c7 03 00 00 00 e0 movl $0xe0000000,(%rbx) 13: 31 c0 xor %eax,%eax 15: eb cf jmp 0xffffffffffffffe6 17: 48 c7 c7 07 99 e3 97 mov $0xffffffff97e39907,%rdi 1e: c6 05 d5 4e e6 00 01 movb $0x1,0xe64ed5(%rip) # 0xe64efa 25: e8 d1 1f c7 ff call 0xffffffffffc71ffb 2a:* 0f 0b ud2 <-- trapping instruction 2c: eb df jmp 0xd 2e: cc int3 2f: cc int3 30: cc int3 31: cc int3 32: cc int3 33: cc int3 34: cc int3 35: cc int3 36: cc int3 37: cc int3 38: cc int3 39: cc int3 3a: cc int3 3b: 48 89 fa mov %rdi,%rdx 3e: 83 .byte 0x83 3f: e2 .byte 0xe2 Code starting with the faulting instruction =========================================== 0: 0f 0b ud2 2: eb df jmp 0xffffffffffffffe3 4: cc int3 5: cc int3 6: cc int3 7: cc int3 8: cc int3 9: cc int3 a: cc int3 b: cc int3 c: cc int3 d: cc int3 e: cc int3 f: cc int3 10: cc int3 11: 48 89 fa mov %rdi,%rdx 14: 83 .byte 0x83 15: e2 .byte 0xe2 [141229.507086] RSP: 0018:ffffa444449e0978 EFLAGS: 00010296 [141229.507229] RAX: 0000000000000019 RBX: ffff9b54866a4100 RCX: 00000000fff7ffff [141229.507404] RDX: 00000000fff7ffff RSI: 0000000000000001 RDI: 00000000ffffffea [141229.507577] RBP: ffff9b53e57b1ec0 R08: 0000000000000000 R09: 00000000fff7ffff [141229.507751] R10: ffff9b62db200000 R11: 0000000000000003 R12: ffff9b5b0595c000 [141229.507929] R13: ffff9b5b09c32200 R14: ffff9b5b09e29a00 R15: ffff9b5b0557e080 [141229.508101] FS: 0000000000000000(0000) GS:ffff9b62dfa00000(0000) knlGS:0000000000000000 [141229.508279] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [141229.508425] CR2: 00007fbadced6a80 CR3: 000000096f014002 CR4: 00000000003706e0 [141229.508599] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [141229.508773] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [141229.508947] Call Trace: [141229.509079] <IRQ> [141229.509206] ? __warn (kernel/panic.c:235 kernel/panic.c:673) [141229.509342] ? report_bug (lib/bug.c:180 lib/bug.c:219) [141229.509482] ? handle_bug (arch/x86/kernel/traps.c:237) [141229.509617] ? exc_invalid_op (arch/x86/kernel/traps.c:258 (discriminator 1)) [141229.509751] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) [141229.509892] ? rcuref_put_slowpath (lib/rcuref.c:267 (discriminator 1)) [141229.510028] ? rcuref_put_slowpath (lib/rcuref.c:267 (discriminator 1)) [141229.510164] dst_release (./arch/x86/include/asm/preempt.h:95 ./include/linux/rcuref.h:151 net/core/dst.c:166) [141229.510302] __dev_queue_xmit (./include/net/dst.h:283 net/core/dev.c:4324) [141229.510441] vlan_dev_hard_start_xmit (net/8021q/vlan_dev.c:130) [141229.510584] dev_hard_start_xmit (./include/linux/netdevice.h:4904 net/core/dev.c:3573 net/core/dev.c:3589) [141229.510722] __dev_queue_xmit (./include/linux/netdevice.h:3278 (discriminator 25) net/core/dev.c:4370 (discriminator 25)) [141229.510862] ? eth_header (net/ethernet/eth.c:85) [141229.510998] ip_finish_output2 (./include/net/neighbour.h:542 (discriminator 2) net/ipv4/ip_output.c:233 (discriminator 2)) [141229.511135] ip_sabotage_in (net/bridge/br_netfilter_hooks.c:881 net/bridge/br_netfilter_hooks.c:866) [141229.511269] nf_hook_slow (./include/linux/netfilter.h:144 net/netfilter/core.c:626) [141229.511406] ip_rcv (./include/linux/netfilter.h:259 ./include/linux/netfilter.h:302 net/ipv4/ip_input.c:569) [141229.511540] ? ip_rcv_core.constprop.0 (net/ipv4/ip_input.c:436) [141229.511678] netif_receive_skb (net/core/dev.c:5552 net/core/dev.c:5666 net/core/dev.c:5752 net/core/dev.c:5811) [141229.511814] br_handle_frame_finish (net/bridge/br_input.c:216) [141229.511954] ? br_pass_frame_up (net/bridge/br_input.c:75) [141229.512092] br_nf_hook_thresh (net/bridge/br_netfilter_hooks.c:1051) [141229.512227] ? br_pass_frame_up (net/bridge/br_input.c:75) [141229.512363] br_nf_pre_routing_finish (net/bridge/br_netfilter_hooks.c:427) [141229.512501] ? br_pass_frame_up (net/bridge/br_input.c:75) [141229.512644] ? nf_nat_ipv4_pre_routing (net/netfilter/nf_nat_proto.c:656) nf_nat [141229.512792] br_nf_pre_routing (net/bridge/br_netfilter_hooks.c:538) [141229.512928] ? br_nf_hook_thresh (net/bridge/br_netfilter_hooks.c:354) [141229.513061] br_handle_frame (./include/linux/netfilter.h:144 net/bridge/br_input.c:272 net/bridge/br_input.c:417) [141229.513196] ? br_pass_frame_up (net/bridge/br_input.c:75) [141229.513333] __netif_receive_skb_core.constprop.0 (net/core/dev.c:5446 (discriminator 1)) [141229.513475] ? ip_finish_output2 (net/ipv4/ip_output.c:243) [141229.513613] process_backlog (net/core/dev.c:5551 net/core/dev.c:5666 net/core/dev.c:5994) [141229.513749] __napi_poll (net/core/dev.c:6556) [141229.513887] net_rx_action (net/core/dev.c:6625 net/core/dev.c:6756) [141229.514023] __do_softirq (./arch/x86/include/asm/preempt.h:27 kernel/softirq.c:564) [141229.514158] do_softirq (kernel/softirq.c:463 (discriminator 32) kernel/softirq.c:450 (discriminator 32)) [141229.514292] </IRQ> [141229.514420] <TASK> [141229.514548] flush_smp_call_function_queue (./arch/x86/include/asm/irqflags.h:134 (discriminator 1) kernel/smp.c:579 (discriminator 1)) [141229.514688] do_idle (kernel/sched/idle.c:314) [141229.514822] cpu_startup_entry (kernel/sched/idle.c:379) [141229.516148] start_secondary (arch/x86/kernel/smpboot.c:326) [141229.516291] secondary_startup_64_no_verify (arch/x86/kernel/head_64.S:433) [141229.516435] </TASK> [141229.516562] ---[ end trace 0000000000000000 ]— Best regards, Martin > On 15 Sep 2023, at 9:45, Eric Dumazet <edumazet@...gle.com> wrote: > > scripts/decode_stacktrace.sh
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