Hello, syzbot found the following issue on: HEAD commit: 94ede2a3e913 profiling: remove stale percpu flip buffer va.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=122f6d9d980000 kernel config: https://syzkaller.appspot.com/x/.config?x=8b0cca2f3880513d dashboard link: https://syzkaller.appspot.com/bug?extid=3bca0d9eb36e75bc36ed compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 Unfortunately, I don't have any reproducer for this issue yet. Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/e10dde6d5041/disk-94ede2a3.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/3bda8d01811d/vmlinux-94ede2a3.xz kernel image: https://storage.googleapis.com/syzbot-assets/653dc61d9ae6/bzImage-94ede2a3.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+3bca0d9eb36e75bc36ed@xxxxxxxxxxxxxxxxxxxxxxxxx kernel tried to execute NX-protected page - exploit attempt? (uid: 0) BUG: unable to handle page fault for address: ffffea000169a5c0 #PF: supervisor instruction fetch in kernel mode #PF: error_code(0x0011) - permissions violation PGD 13fff7067 P4D 13fff7067 PUD 13fff6067 PMD 800000013d4001e3 Oops: Oops: 0011 [#1] PREEMPT SMP KASAN NOPTI CPU: 0 UID: 0 PID: 6910 Comm: syz.0.357 Not tainted 6.11.0-rc1-syzkaller-00043-g94ede2a3e913 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/27/2024 RIP: 0010:0xffffea000169a5c0 Code: ad de 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 24 00 24 00 00 00 00 00 ff ff ff fd 01 00 00 00 01 e8 e4 2c 80 88 ff ff <00> 00 00 00 00 f0 ff 00 00 00 00 00 00 00 00 00 22 01 00 00 00 00 RSP: 0018:ffffc90002e0f8f8 EFLAGS: 00010286 RAX: 1ffff1100be13426 RBX: ffff88805f09a130 RCX: dffffc0000000000 RDX: ffff88807f842600 RSI: 0000000000000002 RDI: ffff88805f09a120 RBP: ffffc90002e0fa30 R08: ffff88802b3aecc7 R09: 1ffff11005675d98 R10: dffffc0000000000 R11: ffffea000169a5c0 R12: ffff88807f842600 R13: ffff88805f09a120 R14: ffff88802b3aed50 R15: ffff88802b3aecb8 FS: 00007f32016ce6c0(0000) GS:ffff8880b9200000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffea000169a5c0 CR3: 000000005af9c000 CR4: 0000000000350ef0 Call Trace: <TASK> mmap_region+0x1891/0x2090 mm/mmap.c:3058 do_mmap+0x8f9/0x1010 mm/mmap.c:1468 vm_mmap_pgoff+0x1dd/0x3d0 mm/util.c:588 ksys_mmap_pgoff+0x4f1/0x720 mm/mmap.c:1514 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f3200977299 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 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 a8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f32016ce048 EFLAGS: 00000246 ORIG_RAX: 0000000000000009 RAX: ffffffffffffffda RBX: 00007f3200b06058 RCX: 00007f3200977299 RDX: 0000000000000001 RSI: 0000000000003000 RDI: 0000000020000000 RBP: 00007f32009e48e6 R08: 0000000000000012 R09: 0000000000000000 R10: 0000000000000012 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000006e R14: 00007f3200b06058 R15: 00007ffebfee75d8 </TASK> Modules linked in: CR2: ffffea000169a5c0 ---[ end trace 0000000000000000 ]--- RIP: 0010:0xffffea000169a5c0 Code: ad de 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 24 00 24 00 00 00 00 00 ff ff ff fd 01 00 00 00 01 e8 e4 2c 80 88 ff ff <00> 00 00 00 00 f0 ff 00 00 00 00 00 00 00 00 00 22 01 00 00 00 00 RSP: 0018:ffffc90002e0f8f8 EFLAGS: 00010286 RAX: 1ffff1100be13426 RBX: ffff88805f09a130 RCX: dffffc0000000000 RDX: ffff88807f842600 RSI: 0000000000000002 RDI: ffff88805f09a120 RBP: ffffc90002e0fa30 R08: ffff88802b3aecc7 R09: 1ffff11005675d98 R10: dffffc0000000000 R11: ffffea000169a5c0 R12: ffff88807f842600 R13: ffff88805f09a120 R14: ffff88802b3aed50 R15: ffff88802b3aecb8 FS: 00007f32016ce6c0(0000) GS:ffff8880b9200000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffea000169a5c0 CR3: 000000005af9c000 CR4: 0000000000350ef0 --- 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. If the report is already addressed, let syzbot know by replying with: #syz fix: exact-commit-title If you want to overwrite report's subsystems, reply with: #syz set subsystems: new-subsystem (See the list of subsystem names on the web dashboard) If the report is a duplicate of another one, reply with: #syz dup: exact-subject-of-another-report If you want to undo deduplication, reply with: #syz undup
