Hello, syzbot found the following issue on: HEAD commit: 68b59730459e Merge tag 'perf-tools-for-v6.11-2024-07-16' o.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=14cb0ab5980000 kernel config: https://syzkaller.appspot.com/x/.config?x=b6230d83d52af231 dashboard link: https://syzkaller.appspot.com/bug?extid=44623300f057a28baf1e 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/8229997a3dbb/disk-68b59730.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/fd51823e0836/vmlinux-68b59730.xz kernel image: https://storage.googleapis.com/syzbot-assets/01811b27f987/bzImage-68b59730.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+44623300f057a28baf1e@xxxxxxxxxxxxxxxxxxxxxxxxx Oops: general protection fault, probably for non-canonical address 0xfbd5a5d5a0000001: 0000 [#1] PREEMPT SMP KASAN NOPTI KASAN: maybe wild-memory-access in range [0xdead4ead00000008-0xdead4ead0000000f] CPU: 1 PID: 8860 Comm: syz.0.1070 Not tainted 6.10.0-syzkaller-08280-g68b59730459e #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/27/2024 RIP: 0010:__list_del include/linux/list.h:195 [inline] RIP: 0010:__list_del_clearprev include/linux/list.h:209 [inline] RIP: 0010:__dev_flush+0xe4/0x160 kernel/bpf/devmap.c:428 Code: b8 00 00 00 00 00 fc ff df 41 80 7c 05 00 00 49 89 c5 74 08 48 89 df e8 6a c3 3d 00 48 8b 2b 48 8d 5d 08 48 89 d8 48 c1 e8 03 <42> 80 3c 28 00 74 08 48 89 df e8 3d c4 3d 00 4c 89 23 4c 89 e0 48 RSP: 0018:ffffc90000a18af0 EFLAGS: 00010212 RAX: 1bd5a9d5a0000001 RBX: dead4ead00000008 RCX: 0000000000000000 RDX: 0000000000000010 RSI: 0000000000000000 RDI: ffff8880b943e868 RBP: dead4ead00000000 R08: ffff8880b943e867 R09: ffff8880b943e858 R10: dffffc0000000000 R11: ffffed1017287d0d R12: 00000000ffffffff R13: dffffc0000000000 R14: ffff8880b943e848 R15: 1ffff11017287d09 FS: 00007f33633c96c0(0000) GS:ffff8880b9500000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffffffffec0000 CR3: 0000000054f40000 CR4: 0000000000350ef0 Call Trace: <IRQ> xdp_do_check_flushed+0x129/0x240 net/core/filter.c:4300 __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+0x2c6/0x970 kernel/softirq.c:554 __do_softirq kernel/softirq.c:588 [inline] invoke_softirq kernel/softirq.c:428 [inline] __irq_exit_rcu+0xf4/0x1c0 kernel/softirq.c:637 irq_exit_rcu+0x9/0x30 kernel/softirq.c:649 common_interrupt+0xaa/0xd0 arch/x86/kernel/irq.c:278 </IRQ> <TASK> asm_common_interrupt+0x26/0x40 arch/x86/include/asm/idtentry.h:693 RIP: 0010:finish_task_switch+0x1ea/0x870 kernel/sched/core.c:5062 Code: c9 50 e8 19 b6 0b 00 48 83 c4 08 4c 89 f7 e8 7d 38 00 00 e9 de 04 00 00 4c 89 f7 e8 d0 d9 32 0a e8 4b e8 36 00 fb 48 8b 5d c0 <48> 8d bb f8 15 00 00 48 89 f8 48 c1 e8 03 49 be 00 00 00 00 00 fc RSP: 0018:ffffc90003a377a8 EFLAGS: 00000286 RAX: 94ed15acce52c200 RBX: ffff88807e01da00 RCX: ffffffff947db703 RDX: dffffc0000000000 RSI: ffffffff8bcac9a0 RDI: ffffffff8c205b20 RBP: ffffc90003a377f0 R08: ffffffff8faec7af R09: 1ffffffff1f5d8f5 R10: dffffc0000000000 R11: fffffbfff1f5d8f6 R12: 1ffff110172a7ebb R13: dffffc0000000000 R14: ffff8880b943e840 R15: ffff8880b953f5d8 context_switch kernel/sched/core.c:5191 [inline] __schedule+0x1808/0x4a60 kernel/sched/core.c:6529 __schedule_loop kernel/sched/core.c:6606 [inline] schedule+0x14b/0x320 kernel/sched/core.c:6621 futex_wait_queue+0x14e/0x1d0 kernel/futex/waitwake.c:370 __futex_wait+0x17f/0x320 kernel/futex/waitwake.c:669 futex_wait+0x101/0x360 kernel/futex/waitwake.c:697 do_futex+0x33b/0x560 kernel/futex/syscalls.c:102 __do_sys_futex kernel/futex/syscalls.c:179 [inline] __se_sys_futex+0x3f9/0x480 kernel/futex/syscalls.c:160 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: 0033:0x7f3362575b59 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:00007f33633c90f8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca RAX: ffffffffffffffda RBX: 00007f3362705f68 RCX: 00007f3362575b59 RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007f3362705f68 RBP: 00007f3362705f60 R08: 00007f33633c96c0 R09: 00007f33633c96c0 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f3362705f6c R13: 000000000000000b R14: 00007ffec9a21080 R15: 00007ffec9a21168 </TASK> Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:__list_del include/linux/list.h:195 [inline] RIP: 0010:__list_del_clearprev include/linux/list.h:209 [inline] RIP: 0010:__dev_flush+0xe4/0x160 kernel/bpf/devmap.c:428 Code: b8 00 00 00 00 00 fc ff df 41 80 7c 05 00 00 49 89 c5 74 08 48 89 df e8 6a c3 3d 00 48 8b 2b 48 8d 5d 08 48 89 d8 48 c1 e8 03 <42> 80 3c 28 00 74 08 48 89 df e8 3d c4 3d 00 4c 89 23 4c 89 e0 48 RSP: 0018:ffffc90000a18af0 EFLAGS: 00010212 RAX: 1bd5a9d5a0000001 RBX: dead4ead00000008 RCX: 0000000000000000 RDX: 0000000000000010 RSI: 0000000000000000 RDI: ffff8880b943e868 RBP: dead4ead00000000 R08: ffff8880b943e867 R09: ffff8880b943e858 R10: dffffc0000000000 R11: ffffed1017287d0d R12: 00000000ffffffff R13: dffffc0000000000 R14: ffff8880b943e848 R15: 1ffff11017287d09 FS: 00007f33633c96c0(0000) GS:ffff8880b9500000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffffffffec0000 CR3: 0000000054f40000 CR4: 0000000000350ef0 ---------------- Code disassembly (best guess): 0: b8 00 00 00 00 mov $0x0,%eax 5: 00 fc add %bh,%ah 7: ff (bad) 8: df 41 80 filds -0x80(%rcx) b: 7c 05 jl 0x12 d: 00 00 add %al,(%rax) f: 49 89 c5 mov %rax,%r13 12: 74 08 je 0x1c 14: 48 89 df mov %rbx,%rdi 17: e8 6a c3 3d 00 call 0x3dc386 1c: 48 8b 2b mov (%rbx),%rbp 1f: 48 8d 5d 08 lea 0x8(%rbp),%rbx 23: 48 89 d8 mov %rbx,%rax 26: 48 c1 e8 03 shr $0x3,%rax * 2a: 42 80 3c 28 00 cmpb $0x0,(%rax,%r13,1) <-- trapping instruction 2f: 74 08 je 0x39 31: 48 89 df mov %rbx,%rdi 34: e8 3d c4 3d 00 call 0x3dc476 39: 4c 89 23 mov %r12,(%rbx) 3c: 4c 89 e0 mov %r12,%rax 3f: 48 rex.W --- 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
