| lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC | |
|
Open Source and information security mailing list archives
| ||
|
Message-ID: <ZXu9tn42ouzCZBt7@xpf.sh.intel.com> Date: Fri, 15 Dec 2023 10:45:10 +0800 From: Pengfei Xu <pengfei.xu@...el.com> To: Mark Rutland <mark.rutland@....com> CC: <peterz@...radead.org>, <linux-kernel@...r.kernel.org>, <heng.su@...el.com>, <lkp@...el.com> Subject: Re: [Syzkaller & bisect] There is WARNING in perf_event_open in v6.7-rc5 kernel Hi Mark, On 2023-12-14 at 15:13:12 +0000, Mark Rutland wrote: > On Thu, Dec 14, 2023 at 10:22:34AM +0800, Pengfei Xu wrote: > > There is WARNING in perf_event_open in v6.7-rc5 kernel. > > > Bisected and found related commit: > > " > > 382c27f4ed28 perf: Fix perf_event_validate_size() > > " > > I believe this is the same issue that Lucas reported at: > > https://lore.kernel.org/lkml/20231214000620.3081018-1-lucas.demarchi@intel.com/ > > ... please see the analysis there. > Thanks for your information, glad to know the latest status. Thanks! > Mark. > > > Revert on top of v6.7-rc5, this issue was gone. > > > > [ 23.133852] ------------[ cut here ]------------ > > [ 23.134146] WARNING: CPU: 1 PID: 727 at kernel/events/core.c:1950 __do_sys_perf_event_open+0x2ba3/0x2c50 > > [ 23.134752] Modules linked in: > > [ 23.134924] CPU: 1 PID: 727 Comm: repro Not tainted 6.7.0-rc5-a39b6ac3781d+ #1 > > [ 23.135292] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.0-0-gd239552ce722-prebuilt.qemu.org 04/01/2014 > > [ 23.135882] RIP: 0010:__do_sys_perf_event_open+0x2ba3/0x2c50 > > [ 23.136212] Code: 48 8d b8 a8 00 00 00 e8 5b 99 bb 03 bf 01 00 00 00 41 89 c5 89 c6 e8 fc d9 c9 ff 41 83 ed 01 0f 84 81 ec ff ff e8 fd d7 c9 ff <0f> 0b e9 75 ec ff ff e8 f1 16 29 00 e9 d1 ec ff ff e8 77 17 29 00 > > [ 23.137194] RSP: 0018:ffff88800cb27d88 EFLAGS: 00010293 > > [ 23.137465] RAX: ffff888010ea8000 RBX: ffff88800d44bd40 RCX: ffffffff8196ccf4 > > [ 23.137832] RDX: 0000000000000000 RSI: ffffffff8196cd03 RDI: 0000000000000005 > > [ 23.138229] RBP: ffff88800cb27ef8 R08: ffff888010ea8000 R09: fffffbfff11c7a2a > > [ 23.138724] R10: 0000000000000001 R11: ffffffff88e3d14f R12: ffff88800d44bd40 > > [ 23.139126] R13: 00000000ffffffff R14: 0000000000000000 R15: 1ffff11001964fbe > > [ 23.139492] FS: 00007fef8c620600(0000) GS:ffff88806cd00000(0000) knlGS:0000000000000000 > > [ 23.139901] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 > > [ 23.140223] CR2: 00000000200000c0 CR3: 000000000d90a000 CR4: 0000000000750ef0 > > [ 23.140619] PKRU: 55555554 > > [ 23.140778] Call Trace: > > [ 23.140920] <TASK> > > [ 23.141049] ? show_regs+0xa2/0xb0 > > [ 23.141236] ? __warn+0xef/0x340 > > [ 23.141412] ? report_bug+0x2f6/0x570 > > [ 23.141616] ? __do_sys_perf_event_open+0x2ba3/0x2c50 > > [ 23.141881] ? report_bug+0x360/0x570 > > [ 23.142083] ? __do_sys_perf_event_open+0x2ba3/0x2c50 > > [ 23.142385] ? handle_bug+0xa4/0x130 > > [ 23.142668] ? exc_invalid_op+0x3a/0x90 > > [ 23.142956] ? asm_exc_invalid_op+0x1f/0x30 > > [ 23.143241] ? __do_sys_perf_event_open+0x2b94/0x2c50 > > [ 23.143506] ? __do_sys_perf_event_open+0x2ba3/0x2c50 > > [ 23.143788] ? __do_sys_perf_event_open+0x2ba3/0x2c50 > > [ 23.144089] ? __do_sys_perf_event_open+0x2ba3/0x2c50 > > [ 23.144397] ? __pfx___do_sys_perf_event_open+0x10/0x10 > > [ 23.144697] ? trace_hardirqs_on+0x26/0x120 > > [ 23.144951] __x64_sys_perf_event_open+0xc7/0x160 > > [ 23.145202] ? syscall_enter_from_user_mode+0x51/0x60 > > [ 23.145476] do_syscall_64+0x42/0xf0 > > [ 23.145670] entry_SYSCALL_64_after_hwframe+0x6e/0x76 > > [ 23.145940] RIP: 0033:0x7fef8c43ee5d > > [ 23.146145] Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 93 af 1b 00 f7 d8 64 89 01 48 > > [ 23.147095] RSP: 002b:00007ffe0ede25a8 EFLAGS: 00000246 ORIG_RAX: 000000000000012a > > [ 23.147633] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fef8c43ee5d > > [ 23.148052] RDX: 0000000000000000 RSI: 00000000ffffffff RDI: 00000000200000c0 > > [ 23.148451] RBP: 00007ffe0ede25b0 R08: 0000000000000000 R09: 00007ffe0ede25e0 > > [ 23.148860] R10: 00000000ffffffff R11: 0000000000000246 R12: 00007ffe0ede2708 > > [ 23.149263] R13: 0000000000401b49 R14: 0000000000403e08 R15: 00007fef8c661000 > > [ 23.149654] </TASK> > > [ 23.149775] irq event stamp: 1131 > > [ 23.149961] hardirqs last enabled at (1139): [<ffffffff81420a0d>] console_unlock+0x22d/0x240 > > [ 23.150428] hardirqs last disabled at (1148): [<ffffffff814209f2>] console_unlock+0x212/0x240 > > [ 23.151012] softirqs last enabled at (944): [<ffffffff8556dd60>] __do_softirq+0x4f0/0x791 > > [ 23.151445] softirqs last disabled at (935): [<ffffffff81266fb1>] irq_exit_rcu+0xc1/0x110 > > [ 23.151884] ---[ end trace 0000000000000000 ]--- > > > > > > I hope it's helpful. > > > > > > --- > > > > If you don't need the following environment to reproduce the problem or if you > > already have one reproduced environment, please ignore the following information. > > > > How to reproduce: > > git clone https://gitlab.com/xupengfe/repro_vm_env.git > > cd repro_vm_env > > tar -xvf repro_vm_env.tar.gz > > cd repro_vm_env; ./start3.sh // it needs qemu-system-x86_64 and I used v7.1.0 > > // start3.sh will load bzImage_2241ab53cbb5cdb08a6b2d4688feb13971058f65 v6.2-rc5 kernel > > // You could change the bzImage_xxx as you want > > // Maybe you need to remove line "-drive if=pflash,format=raw,readonly=on,file=./OVMF_CODE.fd \" for different qemu version > > You could use below command to log in, there is no password for root. > > ssh -p 10023 root@...alhost > > > > After login vm(virtual machine) successfully, you could transfer reproduced > > binary to the vm by below way, and reproduce the problem in vm: > > gcc -pthread -o repro repro.c > > scp -P 10023 repro root@...alhost:/root/ > > > > Get the bzImage for target kernel: > > Please use target kconfig and copy it to kernel_src/.config > > make olddefconfig > > make -jx bzImage //x should equal or less than cpu num your pc has > > > > Fill the bzImage file into above start3.sh to load the target kernel in vm. > > > > > > Tips: > > If you already have qemu-system-x86_64, please ignore below info. > > If you want to install qemu v7.1.0 version: > > git clone https://github.com/qemu/qemu.git > > cd qemu > > git checkout -f v7.1.0 > > mkdir build > > cd build > > yum install -y ninja-build.x86_64 > > yum -y install libslirp-devel.x86_64 > > ../configure --target-list=x86_64-softmmu --enable-kvm --enable-vnc --enable-gtk --enable-sdl --enable-usb-redir --enable-slirp > > make > > make install > > > > Best Regards, > > Thanks!
Powered by blists - more mailing lists