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X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: =?us-ascii?Q?HCEFZACI38HJBEwKkEzdhtkOOjx+RWx1egf/qSElKlOQAnDgpavfqvXAikud?= =?us-ascii?Q?SxwSCdFQHp6z3WVxLYHizyPFpaYPKeodLIuoURTAy3DhM5fF+PJDfaxyq0/g?= =?us-ascii?Q?bNfgR5eNAzabsYMGSipAzbRTLIW2WRpBi3H4NSggehhGBxiZ1m0hIFVPmoI2?= =?us-ascii?Q?ycjk7F3sE3RXi52ncHyTpLHREkOLpNfuGkopQvgiP8UJeVaMvj/IDdQNRbvR?= =?us-ascii?Q?+jGfkDGmG/Ibc217N77VD9VTQssck6Q4yojj+a3uOB9TNvgcCgu6AFkzen+C?= =?us-ascii?Q?sUwxLsRv8dENMhfNYtT1JqdAuB7B/7yu2oikWAqPHJ1KrZLwTg/0iMRTYt36?= =?us-ascii?Q?tnL1o3EdPHEerXc+UNOYdvyJWxfma43ulitQZ9g1AmhUeoPQoqmcoHjSueCP?= =?us-ascii?Q?6vJfresCmGusH06n0X1pg2mtTBwIXZCCtlM4Ps7KeVBlPGHwsTpi0MVWh+tn?= =?us-ascii?Q?+ISi9VpoWFV/KRkQaGYK6pZmMkTyLsbp/I9Tx57ipcGA/Rtg7+AtVmx4ap1j?= =?us-ascii?Q?Tyg/NnZV/ZQ+i3xMbZiZzjuSejNGeCIUn6GRb1wCr93IYiSLZyqnd+4z2KJf?= =?us-ascii?Q?TO5PO9RBW3J+aNURTq7I+tXOXPPu6qkD5PWdgHl/9JcpYpxCH3snn4LMtixK?= =?us-ascii?Q?mr3qW3E+1KsqUwpKsprzBf4yjkZS/cgG4A5jSYmRslU3kdgvlFbaMWBK8aO4?= =?us-ascii?Q?MfExMcEgVcKTtMBXV8RVzqIWV/9Z2uUhe6kg/4heqTpUgUne6bAqrA4Xua/z?= =?us-ascii?Q?DsMjpYQ9yRClsKDeXg6VRGE6hLbaEKVqau7c44yDrvOclVu6GZUsPjInBa2K?= =?us-ascii?Q?CpYpHwFcq5DNfiygq+ySYPXhm4wz7mFVW5OuLs+1HJV1n5hHWyDHzMfOo+kl?= =?us-ascii?Q?etdjDAq2nJMB5V9DE9fjQ4vo2RXB6tUusCoiXYFhG9bLhdgbf9ixjd6j2kOa?= =?us-ascii?Q?mDE9zlUEvp4pmfskedVchFj1F7KYb1vEXrVZ7NYQk8ZK7Pc+ho074hHQZiHf?= =?us-ascii?Q?RsQjj4qZ23s5RLxrHfUrRVm3yfWf/2cc+hJPNBe5F94DsDk3a6X0f1pSC4c2?= =?us-ascii?Q?l3vKPX5nIrYRG1JIp15OlaNfivqduCBnWQx4TC6ABN33jwZICbk5MHpwb+Xa?= =?us-ascii?Q?pYt6w28fZUVaoPP1Yf7Qjcf2N8deI5O5ixHdtKrKcOVd2RCqst3xsJfK70nb?= =?us-ascii?Q?gaCr1y/7BTJu+YizUlAqa6HvRnQtQXaYD8y7P1HPIk67RODTC0yZ+r56EN+7?= =?us-ascii?Q?PnZbcp4+fzF+1alwV5XkIFjE5FT17yPP7VonmEhPS4u4eKraZG0OZhMiRp9L?= =?us-ascii?Q?lZQZ4tIE7ZyUL3iJ76wipx1nRJhNRqSZCGiH8fqgJqn4qclbvsz1ursFL6+h?= =?us-ascii?Q?mAxMxpd3pja6/FBGUo16DlGB+MRu0qWCwdUbMJUAbEmAPuHkTVumA4q/E1LP?= =?us-ascii?Q?MBgIhpL/Xkf582Dp4q8GINiLYd9kcGzD6Nw8Ad3EFJjDLBP1QmNMGzahaHsb?= =?us-ascii?Q?FK4ddPM16X5vf+9HDsE5PoR9fIrLVRw9dZUfRVD9xhdo91a2N06Y8StDqwXS?= =?us-ascii?Q?PN6fneOtsrBqIZoEbf9vj5VU07YXv5QGmEao2I6WullJFbLcfgL/WTmb5iPq?= =?us-ascii?Q?GQ=3D=3D?= X-MS-Exchange-CrossTenant-Network-Message-Id: e0a19bf0-3a70-4050-da70-08db2758d2af X-MS-Exchange-CrossTenant-AuthSource: PH0PR11MB4839.namprd11.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 18 Mar 2023 02:31:05.3245 (UTC) X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted X-MS-Exchange-CrossTenant-Id: 46c98d88-e344-4ed4-8496-4ed7712e255d X-MS-Exchange-CrossTenant-MailboxType: HOSTED X-MS-Exchange-CrossTenant-UserPrincipalName: qCcCQbAabqAmve2PPaLZxskjPfhdzvNJUhRSO+v0fOmjoHtDJ3FvQhCASqMYUiXlhETo73PR6279i7xqnESJtg== X-MS-Exchange-Transport-CrossTenantHeadersStamped: PH7PR11MB6834 X-OriginatorOrg: intel.com Precedence: bulk List-ID: X-Mailing-List: rcu@vger.kernel.org Hi Frederic Weisbecker, On 2023-03-17 at 15:09:44 +0100, Frederic Weisbecker wrote: > On Fri, Mar 17, 2023 at 03:48:33PM +0800, Pengfei Xu wrote: > > Hi Frederic Weisbecker and kernel experts, > > > > Platform: x86 platforms > > There is "sys_perf_event_open" soft lockup BUG in v6.3-rc2 kernel in guest. > > I can reproduce with you tests which is based on v6.2-rc5. However when > I forward port your .config to a v6.3-rc2, the issue doesn't trigger anymore. > > Did you manage to reproduce on v6.3-rc2? And if so do you still have the related > .config ? > Ah, I fogot to say: kconfig_origin will be changed after "make olddefconfig", there were many items changed in .config after "make olddefconfig" in v6.3-rc2. I used below way to make the .config. 1. Copy the kconfig origin to .config: https://github.com/xupengfe/syzkaller_logs/blob/main/230316_062127_sys_perf_event_open/kconfig_origin 2. Fogort that the bisect script will change .config: CONFIG_LOCALVERSION="-kvm" -> CONFIG_LOCALVERSION="-eeac8ede1755", seems to have little effect. 3. make olddefconfig // Then .config will be changed in v6.3-rc2 kernel code. Put .config after make olddefconfig in link: https://github.com/xupengfe/syzkaller_logs/blob/main/230316_062127_sys_perf_event_open/kconfig_v6.3-rc2_after_make_olddefconfig 4. make -jx bzImage //x should equal or less than cpu num your pc has Put v6.3-rc2 bzImage in link: https://github.com/xupengfe/syzkaller_logs/blob/main/230316_062127_sys_perf_event_open/bzImage_eeac8ede17557680855031c6f305ece2378af326 And it could be reproduced after maunally test in 150s. v6.3-rc2 reproduced dmesg: https://github.com/xupengfe/syzkaller_logs/blob/main/230316_062127_sys_perf_event_open/v6.3-rc2_perf_related_problem_dmesg.log And it could be reproduced on our ADL-N client x86 PC in guest. Thanks! BR. -Pengfei > Thanks.