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WARNING in request_threaded_irq

Status: upstream: reported on 2026/02/20 13:13
Subsystems: kernel
[Documentation on labels]
Reported-by: syzbot+1f1c9d0fa117b165b233@syzkaller.appspotmail.com
First crash: 56d, last: 2d16h
▶ ▼ ✨ AI Jobs (1)
ID Workflow Result Correct Bug Created Started Finished Revision Error
f738be2f-e3f1-43ad-962c-97abf31909ed repro ❓ WARNING in request_threaded_irq 2026/03/08 16:20 2026/03/08 16:20 2026/03/08 16:27 31e9c887f7dc24e04b3ca70d0d54fc34141844b0
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Title Replies (including bot) Last reply
[syzbot] [kernel?] WARNING in request_threaded_irq 2 (3) 2026/02/25 10:29

Sample crash report:
------------[ cut here ]------------
WARNING: [irq_settings_is_per_cpu_devid(desc)] kernel/irq/manage.c:2150 at request_threaded_irq+0x320/0x38c kernel/irq/manage.c:2150, CPU#0: syz.1.206/4996
Modules linked in:
CPU: 0 UID: 0 PID: 4996 Comm: syz.1.206 Not tainted syzkaller #0 PREEMPT 
Hardware name: riscv-virtio,qemu (DT)
epc : request_threaded_irq+0x320/0x38c kernel/irq/manage.c:2150
 ra : request_threaded_irq+0x320/0x38c kernel/irq/manage.c:2150
epc : ffffffff8033dfb0 ra : ffffffff8033dfb0 sp : ffff8f8003c977c0
 gp : ffffffff8a22a0c0 tp : ffffaf8030ee8000 t0 : 0000000000000000
 t1 : ffffffff91601820 t2 : ffffffff91601820 s0 : ffff8f8003c97820
 s1 : 0000000000000000 a0 : 0000000000000005 a1 : 0000000000000000
 a2 : 0000000000080000 a3 : ffffffff8033dfb0 a4 : ffff8f8004b4e378
 a5 : 0000000000014378 a6 : 0000000000000003 a7 : ffffffff86864460
 s2 : 0000000000200000 s3 : ffffaf80122cb800 s4 : 0000000000000007
 s5 : ffffffff84bcbc14 s6 : ffffaf801d479000 s7 : 0000000000000000
 s8 : ffffffff877b5b00 s9 : 0000000000020000 s10: ffffaf801d479000
 s11: 0000000000000001 t3 : 0000000000000001 t4 : 0000000000001fff
 t5 : 00000000000000c8 t6 : 0000000000000002 ssp : 0000000000000000
status: 0000000200000120 badaddr: ffffffff8033dfb0 cause: 0000000000000003
[<ffffffff8033dfb0>] request_threaded_irq+0x320/0x38c kernel/irq/manage.c:2150
[<ffffffff84bcd638>] request_irq include/linux/interrupt.h:176 [inline]
[<ffffffff84bcd638>] parport_attach drivers/comedi/drivers/comedi_parport.c:235 [inline]
[<ffffffff84bcd638>] parport_attach+0x780/0xb14 drivers/comedi/drivers/comedi_parport.c:224
[<ffffffff84bbdd20>] comedi_device_attach+0x350/0x7ec drivers/comedi/drivers.c:1069
[<ffffffff84ba9776>] do_devconfig_ioctl+0x1a2/0x654 drivers/comedi/comedi_fops.c:928
[<ffffffff84bb3adc>] comedi_unlocked_ioctl+0x750/0x30e0 drivers/comedi/comedi_fops.c:2300
[<ffffffff80cfa9cc>] vfs_ioctl fs/ioctl.c:51 [inline]
[<ffffffff80cfa9cc>] __do_sys_ioctl fs/ioctl.c:597 [inline]
[<ffffffff80cfa9cc>] __se_sys_ioctl fs/ioctl.c:583 [inline]
[<ffffffff80cfa9cc>] __riscv_sys_ioctl+0x17c/0x1e4 fs/ioctl.c:583
[<ffffffff80077f1e>] syscall_handler+0x92/0x114 arch/riscv/include/asm/syscall.h:112
[<ffffffff8642fdbe>] do_trap_ecall_u+0x402/0x680 arch/riscv/kernel/traps.c:342
[<ffffffff8645a152>] handle_exception+0x15e/0x16a arch/riscv/kernel/entry.S:232

Crashes (15):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2026/04/11 13:16 git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux.git for-next 9b3a2be84803 38c8e246 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu2-riscv64 WARNING in request_threaded_irq
2026/04/11 13:15 git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux.git for-next 9b3a2be84803 38c8e246 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu2-riscv64 WARNING in request_threaded_irq
2026/04/07 00:46 git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux.git for-next e7963e13f9ea 4440e7c2 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu2-riscv64 WARNING in request_threaded_irq
2026/04/07 00:45 git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux.git for-next e7963e13f9ea 4440e7c2 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu2-riscv64 WARNING in request_threaded_irq
2026/04/06 11:09 git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux.git for-next e7963e13f9ea 4440e7c2 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu2-riscv64 WARNING in request_threaded_irq
2026/04/06 11:08 git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux.git for-next e7963e13f9ea 4440e7c2 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu2-riscv64 WARNING in request_threaded_irq
2026/04/06 10:19 git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux.git for-next e7963e13f9ea 4440e7c2 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu2-riscv64 WARNING in request_threaded_irq
2026/04/06 00:46 git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux.git for-next e7963e13f9ea 4440e7c2 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu2-riscv64 WARNING in request_threaded_irq
2026/04/06 00:44 git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux.git for-next e7963e13f9ea 4440e7c2 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu2-riscv64 WARNING in request_threaded_irq
2026/03/09 12:03 git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux.git for-next 18be4ca5cb4e 5cb44a80 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu2-riscv64 WARNING in request_threaded_irq
2026/03/09 12:02 git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux.git for-next 18be4ca5cb4e 5cb44a80 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu2-riscv64 WARNING in request_threaded_irq
2026/02/23 09:23 git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux.git for-next 18be4ca5cb4e 6e7b5511 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu2-riscv64 WARNING in request_threaded_irq
2026/02/23 09:22 git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux.git for-next 18be4ca5cb4e 6e7b5511 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu2-riscv64 WARNING in request_threaded_irq
2026/02/16 13:12 git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux.git for-next 18be4ca5cb4e 1e62d198 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu2-riscv64 WARNING in request_threaded_irq
2026/02/16 13:10 git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux.git for-next 18be4ca5cb4e 1e62d198 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu2-riscv64 WARNING in request_threaded_irq
* Struck through repros no longer work on HEAD.