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Tue, 01 Sep 2026 01:24:02 -0700 (PDT) Date: Tue, 01 Sep 2026 01:24:02 -0700 In-Reply-To: <2ae556b1-526f-46a4-a307-25848b0baf8en@googlegroups.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <6a968ba2.99925153.16bd3d.000a.GAE@google.com> Subject: Re: [syzbot] [edac?] general protection fault in detach_timer (3) From: syzbot To: linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com, tao1.yu@intel.com Content-Type: text/plain; charset="UTF-8" Hello, syzbot has tested the proposed patch but the reproducer is still triggering an issue: WARNING in __set_cpus_allowed_ptr_locked ------------[ cut here ]------------ !pending WARNING: kernel/sched/core.c:3057 at affine_move_task kernel/sched/core.c:3057 [inline], CPU#0: irq/33-virtio1-/1193 WARNING: kernel/sched/core.c:3057 at __set_cpus_allowed_ptr_locked+0x10ff/0x19c0 kernel/sched/core.c:3190, CPU#0: irq/33-virtio1-/1193 Modules linked in: CPU: 0 UID: 0 PID: 1193 Comm: irq/33-virtio1- Not tainted syzkaller #0 PREEMPT_{RT,(full)} Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026 RIP: 0010:affine_move_task kernel/sched/core.c:3057 [inline] RIP: 0010:__set_cpus_allowed_ptr_locked+0x10ff/0x19c0 kernel/sched/core.c:3190 Code: cf ff ff 48 8b 5c 24 18 48 8d 7b 08 e8 5a 93 09 00 e9 2e fe ff ff 90 0f 0b 90 e9 74 f3 ff ff e8 57 eb 9d ff e9 dd f8 ff ff 90 <0f> 0b 90 48 8b 3c 24 48 8b 74 24 08 48 8b 54 24 10 e8 2b cf ff ff RSP: 0018:ffffc9000712f900 EFLAGS: 00010046 RAX: 0000000000000000 RBX: ffff8880268e84b8 RCX: ffffffff81950d8b RDX: dffffc0000000000 RSI: 0000000000000008 RDI: ffff8880268e84b0 RBP: ffffc9000712fb10 R08: ffff8880268e84b7 R09: 1ffff11004d1d096 R10: dffffc0000000000 R11: ffffed1004d1d097 R12: 1ffff11004d1d097 R13: 1ffff92000e25f28 R14: ffff8880268e84b0 R15: 0000000000000004 FS: 0000000000000000(0000) GS:ffff888125be1000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000555568e077b8 CR3: 000000003c6c2000 CR4: 00000000003526f0 Call Trace: __set_cpus_allowed_ptr kernel/sched/core.c:3222 [inline] ___migrate_enable+0x19c/0x1f0 kernel/sched/core.c:2486 __migrate_enable include/linux/sched.h:2471 [inline] migrate_enable include/linux/sched.h:2520 [inline] __local_bh_enable+0x21c/0x2f0 kernel/softirq.c:273 __local_bh_enable_ip+0x19f/0x2b0 kernel/softirq.c:328 local_bh_enable include/linux/bottom_half.h:33 [inline] irq_forced_thread_fn+0xe9/0x120 kernel/irq/manage.c:1169 irq_thread+0x455/0x690 kernel/irq/manage.c:1272 kthread+0x38b/0x470 kernel/kthread.c:436 ret_from_fork+0x514/0xb70 arch/x86/kernel/process.c:158 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 Tested on: commit: 8ff706df x86/mce: Prevent polling timer rearm across t.. git tree: https://github.com/yutao-intel/linux.git fix-edac-v2 console output: https://syzkaller.appspot.com/x/log.txt?x=12f18779580000 kernel config: https://syzkaller.appspot.com/x/.config?x=e618aabdc2dca7e6 dashboard link: https://syzkaller.appspot.com/bug?extid=edc6b57cbed1fb72d0f9 compiler: Debian clang version 22.1.8 (++20260613092233+e80beda6e255-1~exp1~20260613092250.77), Debian LLD 22.1.8 Note: no patches were applied.