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自研补丁net/sched: flower: Fix kabi change，修复kabi变化的时候，引入问题
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#I9IQLI
Task
shaozhengchao
Opened this issue
2024-04-22 18:36
<!-- #请根据issue的类型在标题左侧下拉框中选择对应的选项（需求、缺陷或CVE等）--> <!-- #请根据issue相关的版本在里程碑中选择对应的节点，若是与版本无关，请选择“不关联里程碑”--> 自研补丁net/sched: flower: Fix kabi change，修复kabi变化的时候，引入问题 [ 38.391240] BUG: unable to handle page fault for address: ffffffff98715da0 [ 38.391329] #PF: supervisor write access in kernel mode [ 38.391382] #PF: error_code(0x0003) - permissions violation [ 38.391421] PGD ec0d067 P4D ec0d067 PUD ec0e063 PMD 800000000e0001e1 [ 38.391481] Oops: 0003 [#1] SMP PTI [ 38.391535] CPU: 20 PID: 7533 Comm: tc Kdump: loaded Not tainted 5.10.0+ #40 [ 38.391593] Hardware name: Red Hat KVM, BIOS 0.5.1 01/01/2011 [ 38.391648] RIP: 0010:fl_init+0xcf/0x100 [ 38.391686] Code: 48 c7 85 38 01 00 00 00 00 00 00 48 83 05 00 03 d1 02 01 e8 a8 d4 1e 00 48 c7 c6 40 87 71 98 48 89 ef 48 83 05 f1 02 d1 02 01 <48> c7 05 66 78 78 00 30 92 f8 97 e8 61 1f a6 ff 48 83 05 e1 02 d1 [ 38.391767] RSP: 0018:ffffb6e7c0fe7978 EFLAGS: 00010202 [ 38.391813] RAX: 0000000000000049 RBX: ffff99c6b3580480 RCX: 0000000000000027 [ 38.391850] RDX: 0000000000000000 RSI: ffffffff98718740 RDI: ffff99c6a359f800 [ 38.391881] RBP: ffff99c6a359f800 R08: ffff99cfdce1fe50 R09: ffffb6e7c0fe77a0 [ 38.391927] R10: ffffb6e7c0fe7798 R11: ffffffff9967d5a8 R12: ffff99c6b3580480 [ 38.391972] R13: ffffb6e7c0fe7b80 R14: 0000000000000001 R15: ffffb6e7c0fe7ab0 [ 38.392003] FS: 00007fbaef7b1800(0000) GS:ffff99cfdce00000(0000) knlGS:0000000000000000 [ 38.392047] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 38.392083] CR2: ffffffff98715da0 CR3: 000000011299c000 CR4: 00000000000006e0 [ 38.392122] Call Trace: [ 38.392177] ? show_regs.cold+0x22/0x2f [ 38.392219] ? __die_body+0x23/0xa0 [ 38.392260] ? __die+0x34/0x45 [ 38.392299] ? no_context+0x273/0x310 [ 38.392338] ? __bad_area_nosemaphore+0x5e/0x250 [ 38.392378] ? bad_area_nosemaphore+0x1a/0x30 [ 38.392405] ? do_kern_addr_fault+0x93/0xe0 [ 38.392448] ? exc_page_fault+0x552/0xa60 [ 38.392488] ? asm_exc_page_fault+0x1e/0x30 [ 38.392526] ? fl_init+0xcf/0x100 [ 38.392561] ? fl_init+0xbd/0x100 [ 38.392597] tcf_proto_create.cold+0x66/0x9e [ 38.392638] tc_new_tfilter+0x611/0xa70 [ 38.392679] ? tcf_chain_tp_insert_unique+0x1f0/0x1f0 [ 38.392716] rtnetlink_rcv_msg+0x406/0x560 [ 38.392778] ? get_page_from_freelist+0xe3c/0x1180 [ 38.392828] ? rtnl_calcit.isra.0+0x1b0/0x1b0 [ 38.392915] netlink_rcv_skb+0x64/0x180 [ 38.392982] rtnetlink_rcv+0x19/0x30 [ 38.393039] netlink_unicast_kernel+0x7b/0x180 [ 38.393083] netlink_unicast+0x13d/0x230 [ 38.393141] netlink_sendmsg+0x432/0x610 [ 38.393192] __sock_sendmsg+0xc6/0xd0 [ 38.393716] ____sys_sendmsg+0x1f5/0x380 由于tmplt_reoffload函数指针是个const类型，而在fl_init又对这个常量进行赋值，导致错误。
<!-- #请根据issue的类型在标题左侧下拉框中选择对应的选项（需求、缺陷或CVE等）--> <!-- #请根据issue相关的版本在里程碑中选择对应的节点，若是与版本无关，请选择“不关联里程碑”--> 自研补丁net/sched: flower: Fix kabi change，修复kabi变化的时候，引入问题 [ 38.391240] BUG: unable to handle page fault for address: ffffffff98715da0 [ 38.391329] #PF: supervisor write access in kernel mode [ 38.391382] #PF: error_code(0x0003) - permissions violation [ 38.391421] PGD ec0d067 P4D ec0d067 PUD ec0e063 PMD 800000000e0001e1 [ 38.391481] Oops: 0003 [#1] SMP PTI [ 38.391535] CPU: 20 PID: 7533 Comm: tc Kdump: loaded Not tainted 5.10.0+ #40 [ 38.391593] Hardware name: Red Hat KVM, BIOS 0.5.1 01/01/2011 [ 38.391648] RIP: 0010:fl_init+0xcf/0x100 [ 38.391686] Code: 48 c7 85 38 01 00 00 00 00 00 00 48 83 05 00 03 d1 02 01 e8 a8 d4 1e 00 48 c7 c6 40 87 71 98 48 89 ef 48 83 05 f1 02 d1 02 01 <48> c7 05 66 78 78 00 30 92 f8 97 e8 61 1f a6 ff 48 83 05 e1 02 d1 [ 38.391767] RSP: 0018:ffffb6e7c0fe7978 EFLAGS: 00010202 [ 38.391813] RAX: 0000000000000049 RBX: ffff99c6b3580480 RCX: 0000000000000027 [ 38.391850] RDX: 0000000000000000 RSI: ffffffff98718740 RDI: ffff99c6a359f800 [ 38.391881] RBP: ffff99c6a359f800 R08: ffff99cfdce1fe50 R09: ffffb6e7c0fe77a0 [ 38.391927] R10: ffffb6e7c0fe7798 R11: ffffffff9967d5a8 R12: ffff99c6b3580480 [ 38.391972] R13: ffffb6e7c0fe7b80 R14: 0000000000000001 R15: ffffb6e7c0fe7ab0 [ 38.392003] FS: 00007fbaef7b1800(0000) GS:ffff99cfdce00000(0000) knlGS:0000000000000000 [ 38.392047] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 38.392083] CR2: ffffffff98715da0 CR3: 000000011299c000 CR4: 00000000000006e0 [ 38.392122] Call Trace: [ 38.392177] ? show_regs.cold+0x22/0x2f [ 38.392219] ? __die_body+0x23/0xa0 [ 38.392260] ? __die+0x34/0x45 [ 38.392299] ? no_context+0x273/0x310 [ 38.392338] ? __bad_area_nosemaphore+0x5e/0x250 [ 38.392378] ? bad_area_nosemaphore+0x1a/0x30 [ 38.392405] ? do_kern_addr_fault+0x93/0xe0 [ 38.392448] ? exc_page_fault+0x552/0xa60 [ 38.392488] ? asm_exc_page_fault+0x1e/0x30 [ 38.392526] ? fl_init+0xcf/0x100 [ 38.392561] ? fl_init+0xbd/0x100 [ 38.392597] tcf_proto_create.cold+0x66/0x9e [ 38.392638] tc_new_tfilter+0x611/0xa70 [ 38.392679] ? tcf_chain_tp_insert_unique+0x1f0/0x1f0 [ 38.392716] rtnetlink_rcv_msg+0x406/0x560 [ 38.392778] ? get_page_from_freelist+0xe3c/0x1180 [ 38.392828] ? rtnl_calcit.isra.0+0x1b0/0x1b0 [ 38.392915] netlink_rcv_skb+0x64/0x180 [ 38.392982] rtnetlink_rcv+0x19/0x30 [ 38.393039] netlink_unicast_kernel+0x7b/0x180 [ 38.393083] netlink_unicast+0x13d/0x230 [ 38.393141] netlink_sendmsg+0x432/0x610 [ 38.393192] __sock_sendmsg+0xc6/0xd0 [ 38.393716] ____sys_sendmsg+0x1f5/0x380 由于tmplt_reoffload函数指针是个const类型，而在fl_init又对这个常量进行赋值，导致错误。
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