Hello, syzbot found the following issue on: HEAD commit: 13e3c7793e2f Merge tag 'for-netdev' of https://git.kernel... git tree: bpf console output: https://syzkaller.appspot.com/x/log.txt?x=12eda6e7880000 kernel config: https://syzkaller.appspot.com/x/.config?x=b0e91ad4b5f69c47 dashboard link: https://syzkaller.appspot.com/bug?extid=697196bc0265049822bd compiler: gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=114a2127880000 Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/373a99daa295/disk-13e3c779.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/7fa71ed0fe17/vmlinux-13e3c779.xz kernel image: https://storage.googleapis.com/syzbot-assets/2842ad5c698b/bzImage-13e3c779.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+697196bc0265049822bd@xxxxxxxxxxxxxxxxxxxxxxxxx ------------[ cut here ]------------ WARNING: CPU: 1 PID: 22650 at kernel/events/core.c:4920 put_pmu_ctx kernel/events/core.c:4920 [inline] WARNING: CPU: 1 PID: 22650 at kernel/events/core.c:4920 put_pmu_ctx+0x2a5/0x390 kernel/events/core.c:4893 Modules linked in: CPU: 1 PID: 22650 Comm: syz-executor.4 Not tainted 6.1.0-syzkaller-09661-g13e3c7793e2f #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 RIP: 0010:put_pmu_ctx kernel/events/core.c:4920 [inline] RIP: 0010:put_pmu_ctx+0x2a5/0x390 kernel/events/core.c:4893 Code: dd ff e8 2e 0f dd ff 48 8d 7b 50 48 c7 c6 a0 f8 a2 81 e8 3e c8 c7 ff eb d6 e8 17 0f dd ff 0f 0b e9 64 ff ff ff e8 0b 0f dd ff <0f> 0b eb 88 e8 c2 bc 2a 00 eb a5 e8 fb 0e dd ff 0f 0b e9 e4 fd ff RSP: 0018:ffffc90003f47c68 EFLAGS: 00010293 RAX: 0000000000000000 RBX: ffff8880b9841978 RCX: 0000000000000000 RDX: ffff88801fc6ba80 RSI: ffffffff81a3a405 RDI: 0000000000000001 RBP: ffff8880b98419a8 R08: 0000000000000001 R09: 0000000000000001 R10: ffffed1017306b78 R11: 0000000000000000 R12: ffff8880b9835c90 R13: ffff8880b9835bc0 R14: 0000000000000293 R15: ffff8880b9841980 FS: 00007f1cdf1fe700(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f78cc3157e2 CR3: 000000001ccc0000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: <TASK> _free_event+0x3c5/0x13d0 kernel/events/core.c:5196 put_event kernel/events/core.c:5283 [inline] perf_event_release_kernel+0x6ad/0x8f0 kernel/events/core.c:5395 perf_release+0x37/0x50 kernel/events/core.c:5405 __fput+0x27c/0xa90 fs/file_table.c:320 task_work_run+0x16f/0x270 kernel/task_work.c:179 resume_user_mode_work include/linux/resume_user_mode.h:49 [inline] exit_to_user_mode_loop kernel/entry/common.c:171 [inline] exit_to_user_mode_prepare+0x23c/0x250 kernel/entry/common.c:203 __syscall_exit_to_user_mode_work kernel/entry/common.c:285 [inline] syscall_exit_to_user_mode+0x1d/0x50 kernel/entry/common.c:296 do_syscall_64+0x46/0xb0 arch/x86/entry/common.c:86 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7f1cdfe8c0d9 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 f1 19 00 00 90 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 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f1cdf1fe168 EFLAGS: 00000246 ORIG_RAX: 0000000000000003 RAX: 0000000000000000 RBX: 00007f1cdffabf80 RCX: 00007f1cdfe8c0d9 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000004 RBP: 00007f1cdfee7ae9 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffd2718bc2f R14: 00007f1cdf1fe300 R15: 0000000000022000 </TASK> --- This report is generated by a bot. It may contain errors. See https://goo.gl/tpsmEJ for more information about syzbot. syzbot engineers can be reached at syzkaller@xxxxxxxxxxxxxxxx. syzbot will keep track of this issue. See: https://goo.gl/tpsmEJ#status for how to communicate with syzbot. syzbot can test patches for this issue, for details see: https://goo.gl/tpsmEJ#testing-patches
