Hello, syzbot found the following issue on: HEAD commit: b1bc554e009e Merge tag 'media/v6.11-1' of git://git.kernel.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=165f372d980000 kernel config: https://syzkaller.appspot.com/x/.config?x=65e004fdd6e65e46 dashboard link: https://syzkaller.appspot.com/bug?extid=c226757eb784a9da3e8b 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/eba440b3a1dc/disk-b1bc554e.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/7ef97684b39f/vmlinux-b1bc554e.xz kernel image: https://storage.googleapis.com/syzbot-assets/c465a94c9348/bzImage-b1bc554e.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+c226757eb784a9da3e8b@xxxxxxxxxxxxxxxxxxxxxxxxx Oops: general protection fault, probably for non-canonical address 0xe3fffb240028e7c8: 0000 [#1] PREEMPT SMP KASAN PTI KASAN: maybe wild-memory-access in range [0x1ffff92001473e40-0x1ffff92001473e47] CPU: 0 PID: 5818 Comm: syz.2.162 Not tainted 6.10.0-syzkaller-05505-gb1bc554e009e #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/27/2024 RIP: 0010:__cpu_map_flush+0x42/0xd0 Code: e8 e3 d9 d6 ff 4c 89 f0 48 c1 e8 03 42 80 3c 38 00 74 08 4c 89 f7 e8 8d c7 39 00 49 8b 1e 4c 39 f3 74 77 48 89 d8 48 c1 e8 03 <42> 80 3c 38 00 74 08 48 89 df e8 6f c7 39 00 4c 8b 23 48 8d 7b c0 RSP: 0018:ffffc90000007bb0 EFLAGS: 00010203 RAX: 03ffff240028e7c8 RBX: 1ffff92001473e44 RCX: ffff888027121e00 RDX: 0000000080000101 RSI: 0000000000000000 RDI: ffffc9000a39f1a0 RBP: dffffc0000000000 R08: ffffffff895d4e8a R09: 1ffffffff1f5a8c5 R10: dffffc0000000000 R11: fffffbfff1f5a8c6 R12: ffffc9000a39f1a0 R13: ffffc9000a39f160 R14: ffffc9000a39f1a0 R15: dffffc0000000000 FS: 00007feb6f7916c0(0000) GS:ffff8880b9400000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000110c343cd0 CR3: 000000001ec24000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: <IRQ> xdp_do_check_flushed+0x136/0x240 net/core/filter.c:4304 __napi_poll+0xe4/0x490 net/core/dev.c:6774 napi_poll net/core/dev.c:6840 [inline] net_rx_action+0x89b/0x1240 net/core/dev.c:6962 handle_softirqs+0x2c4/0x970 kernel/softirq.c:554 do_softirq+0x11b/0x1e0 kernel/softirq.c:455 </IRQ> <TASK> __local_bh_enable_ip+0x1bb/0x200 kernel/softirq.c:382 tun_rx_batched+0x732/0x8f0 tun_get_user+0x2f84/0x4720 drivers/net/tun.c:2006 tun_chr_write_iter+0x113/0x1f0 drivers/net/tun.c:2052 new_sync_write fs/read_write.c:497 [inline] vfs_write+0xa72/0xc90 fs/read_write.c:590 ksys_write+0x1a0/0x2c0 fs/read_write.c:643 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: 0033:0x7feb6e9746df Code: 89 54 24 18 48 89 74 24 10 89 7c 24 08 e8 29 8c 02 00 48 8b 54 24 18 48 8b 74 24 10 41 89 c0 8b 7c 24 08 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 31 44 89 c7 48 89 44 24 08 e8 7c 8c 02 00 48 RSP: 002b:00007feb6f791010 EFLAGS: 00000293 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 00007feb6eb03f60 RCX: 00007feb6e9746df RDX: 0000000000000036 RSI: 0000000020000240 RDI: 00000000000000c8 RBP: 00007feb6e9e4e5d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000036 R11: 0000000000000293 R12: 0000000000000000 R13: 000000000000000b R14: 00007feb6eb03f60 R15: 00007ffcc6c5e298 </TASK> Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:__cpu_map_flush+0x42/0xd0 Code: e8 e3 d9 d6 ff 4c 89 f0 48 c1 e8 03 42 80 3c 38 00 74 08 4c 89 f7 e8 8d c7 39 00 49 8b 1e 4c 39 f3 74 77 48 89 d8 48 c1 e8 03 <42> 80 3c 38 00 74 08 48 89 df e8 6f c7 39 00 4c 8b 23 48 8d 7b c0 RSP: 0018:ffffc90000007bb0 EFLAGS: 00010203 RAX: 03ffff240028e7c8 RBX: 1ffff92001473e44 RCX: ffff888027121e00 RDX: 0000000080000101 RSI: 0000000000000000 RDI: ffffc9000a39f1a0 RBP: dffffc0000000000 R08: ffffffff895d4e8a R09: 1ffffffff1f5a8c5 R10: dffffc0000000000 R11: fffffbfff1f5a8c6 R12: ffffc9000a39f1a0 R13: ffffc9000a39f160 R14: ffffc9000a39f1a0 R15: dffffc0000000000 FS: 00007feb6f7916c0(0000) GS:ffff8880b9400000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000110c343cd0 CR3: 000000001ec24000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess): 0: e8 e3 d9 d6 ff call 0xffd6d9e8 5: 4c 89 f0 mov %r14,%rax 8: 48 c1 e8 03 shr $0x3,%rax c: 42 80 3c 38 00 cmpb $0x0,(%rax,%r15,1) 11: 74 08 je 0x1b 13: 4c 89 f7 mov %r14,%rdi 16: e8 8d c7 39 00 call 0x39c7a8 1b: 49 8b 1e mov (%r14),%rbx 1e: 4c 39 f3 cmp %r14,%rbx 21: 74 77 je 0x9a 23: 48 89 d8 mov %rbx,%rax 26: 48 c1 e8 03 shr $0x3,%rax * 2a: 42 80 3c 38 00 cmpb $0x0,(%rax,%r15,1) <-- trapping instruction 2f: 74 08 je 0x39 31: 48 89 df mov %rbx,%rdi 34: e8 6f c7 39 00 call 0x39c7a8 39: 4c 8b 23 mov (%rbx),%r12 3c: 48 8d 7b c0 lea -0x40(%rbx),%rdi --- 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
