WARNING in its_msi_teardown

Status: upstream: reported C repro on 2026/07/29 00:08
Subsystems: kernel
Labels: prio:high
[Documentation on labels]
Reported-by: syzbot+229d761b8a110e6de517@syzkaller.appspotmail.com
First crash: 6d06h, last: 6d05h
✨ AI Patch Versions (1)
Version Stage Reported Report Link Job
1 moderation 2026/07/29 09:50 Discussion 09d24d0b-29ec-4b31-b433-6367b7670bfc
✨ AI Jobs (2)
ID Workflow Result Correct Bug Created Started Finished Revision Error
09d24d0b patching WARNING in its_msi_teardown 2026/07/29 08:36 2026/07/29 08:36 2026/07/29 09:50 19622d9d

			
		
98ab0c86 assessment-security DenialOfService: ✅ Exploitable: ❌ FilesystemTrigger: ❌ NetworkTrigger: ❌ PeripheralTrigger: ✅ RemoteTrigger: ❌ Unprivileged: ❌ UserNamespace: ❌ VMGuestTrigger: ❌ VMHostTrigger: ❌ WARNING in its_msi_teardown 2026/07/25 00:01 2026/07/25 00:01 2026/07/25 00:45 1bdb5c57

			
		
Discussions (1)
Title Replies (including bot) Last reply
[syzbot] [kernel?] WARNING in its_msi_teardown 1 (3) 2026/07/29 09:29
Last patch testing requests (1)
Created Duration User Patch Repo Result
2026/07/29 08:11 2h43m rihyeon8648@gmail.com patch git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci OK log

Sample crash report:
 el0_svc_common+0xec/0x23c arch/arm64/kernel/syscall.c:121
 do_el0_svc+0x4c/0x5c arch/arm64/kernel/syscall.c:140
 el0_svc+0x64/0x260 arch/arm64/kernel/entry-common.c:736
 el0t_64_sync_handler+0x48/0x148 arch/arm64/kernel/entry-common.c:755
 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:594
------------[ cut here ]------------
WARNING: drivers/irqchip/irq-gic-v3-its.c:2251 at its_lpi_free drivers/irqchip/irq-gic-v3-its.c:2251 [inline], CPU#0: syz.0.18/4916
WARNING: drivers/irqchip/irq-gic-v3-its.c:2251 at its_msi_teardown+0x3a4/0x424 drivers/irqchip/irq-gic-v3-its.c:3644, CPU#0: syz.0.18/4916
Modules linked in:
CPU: 0 UID: 0 PID: 4916 Comm: syz.0.18 Not tainted syzkaller #0 PREEMPT 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/02/2026
pstate: 83400005 (Nzcv daif +PAN -UAO +TCO +DIT -SSBS BTYPE=--)
pc : its_lpi_free drivers/irqchip/irq-gic-v3-its.c:2251 [inline]
pc : its_msi_teardown+0x3a4/0x424 drivers/irqchip/irq-gic-v3-its.c:3644
lr : its_lpi_free drivers/irqchip/irq-gic-v3-its.c:2251 [inline]
lr : its_msi_teardown+0x3a4/0x424 drivers/irqchip/irq-gic-v3-its.c:3644
sp : ffff800098017560
x29: ffff8000980175f0 x28: ffff0000cfc75930 x27: 1fffe00019f8eb26
x26: 1fffe00019f8eb22 x25: ffff0000c13e1000 x24: dfff800000000000
x23: ffff700013002eac x22: 00000000fffffff4 x21: ffff800098017580
x20: ffff0000c1e07ce0 x19: ffff0000cfc75900 x18: 00000000ffffffff
x17: 70202c31206c6176 x16: 0000000000000001 x15: 0000000000000000
x14: 0000000000000000 x13: 0000000000000001 x12: 0000000000000000
x11: 0000000000000000 x10: 0000000000000003 x9 : 0000000000000000
x8 : 0000000000000000 x7 : 0000000000000000 x6 : 0000000000000000
x5 : 00000000ffffffff x4 : 0000000000000cc0 x3 : ffff800081ba1c7c
x2 : 00000000fffffff4 x1 : ffff0000cfb10000 x0 : 0000000000000000
Call trace:
 its_lpi_free drivers/irqchip/irq-gic-v3-its.c:2251 [inline] (P)
 its_msi_teardown+0x3a4/0x424 drivers/irqchip/irq-gic-v3-its.c:3644 (P)
 its_msi_teardown+0xa0/0xb8 drivers/irqchip/irq-gic-its-msi-parent.c:249
 msi_remove_device_irq_domain+0x16c/0x27c kernel/irq/msi.c:1127
 msi_device_data_release+0x38/0x9c kernel/irq/msi.c:293
 dr_node_release+0x4c/0x5c drivers/base/devres.c:122
 release_nodes+0xac/0x108 drivers/base/devres.c:546
 devres_release_all+0x138/0x1a4 drivers/base/devres.c:576
 device_unbind_cleanup+0x80/0x1c8 drivers/base/dd.c:597
 __device_release_driver drivers/base/dd.c:1354 [inline]
 device_release_driver_internal+0x19c/0x20c drivers/base/dd.c:1372
 device_release_driver+0x28/0x38 drivers/base/dd.c:1395
 pci_stop_dev drivers/pci/remove.c:27 [inline]
 pci_stop_bus_device+0x108/0x14c drivers/pci/remove.c:93
 pci_stop_and_remove_bus_device+0x84/0xd0 drivers/pci/remove.c:128
 pci_stop_and_remove_bus_device_locked+0x24/0x38 drivers/pci/remove.c:136
 remove_store+0xdc/0x148 drivers/pci/pci-sysfs.c:523
 dev_attr_store+0x6c/0x90 drivers/base/core.c:2505
 sysfs_kf_write+0xe0/0x108 fs/sysfs/file.c:145
 kernfs_fop_write_iter+0x260/0x3b8 fs/kernfs/file.c:345
 new_sync_write fs/read_write.c:595 [inline]
 vfs_write+0x51c/0xa0c fs/read_write.c:687
 ksys_write+0x12c/0x228 fs/read_write.c:739
 __do_sys_write fs/read_write.c:750 [inline]
 __se_sys_write fs/read_write.c:747 [inline]
 __arm64_sys_write+0x7c/0x90 fs/read_write.c:747
 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline]
 invoke_syscall+0x98/0x244 arch/arm64/kernel/syscall.c:49
 el0_svc_common+0xec/0x23c arch/arm64/kernel/syscall.c:121
 do_el0_svc+0x4c/0x5c arch/arm64/kernel/syscall.c:140
 el0_svc+0x64/0x260 arch/arm64/kernel/entry-common.c:736
 el0t_64_sync_handler+0x48/0x148 arch/arm64/kernel/entry-common.c:755
 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:594
irq event stamp: 1608
hardirqs last  enabled at (1607): [<ffff8000868e3f4c>] irqentry_exit_to_kernel_mode_after_preempt include/linux/irq-entry-common.h:507 [inline]
hardirqs last  enabled at (1607): [<ffff8000868e3f4c>] arm64_exit_to_kernel_mode+0x80/0x94 arch/arm64/kernel/entry-common.c:62
hardirqs last disabled at (1608): [<ffff8000868dfe78>] el1_brk64+0x20/0x54 arch/arm64/kernel/entry-common.c:425
softirqs last  enabled at (1528): [<ffff800084c10fac>] __alloc_skb+0x1c0/0x610 net/core/skbuff.c:698
softirqs last disabled at (1526): [<ffff800084c10f94>] local_bh_disable include/linux/bottom_half.h:20 [inline]
softirqs last disabled at (1526): [<ffff800084c10f94>] __alloc_skb+0x1a8/0x610 net/core/skbuff.c:697
---[ end trace 0000000000000000 ]---
pci 0000:00:01.0: [1af4:1005] type 00 class 0x00ff00 conventional PCI endpoint
pci 0000:00:01.0: BAR 0 [io  0x1000-0x101f]
pci 0000:00:01.0: BAR 1 [mem 0x10110080-0x101100bf]
pci 0000:00:01.0: BAR 1 [mem 0x10110080-0x101100bf]: assigned
pci 0000:00:01.0: BAR 0 [io  0x1000-0x101f]: assigned
virtio-pci 0000:00:01.0: virtio_pci: leaving for legacy driver

Crashes (2):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2026/07/24 22:33 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci b66b0005b6ce 05b26a28 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 WARNING in its_msi_teardown
2026/07/24 21:34 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci b66b0005b6ce 05b26a28 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 WARNING in its_msi_teardown
* Struck through repros no longer work on HEAD.