26-Feb-2026 15:49:42: starting attempt #0
26-Feb-2026 15:59:50: attempt failed: "WARNING in apply_wqattrs_prepare"
26-Feb-2026 15:59:50: starting attempt #1
26-Feb-2026 16:09:58: attempt failed: "WARNING in apply_wqattrs_prepare"
26-Feb-2026 16:09:58: starting attempt #2
26-Feb-2026 16:20:06: attempt failed: "WARNING in apply_wqattrs_prepare"
26-Feb-2026 16:20:06: report:
node 0: [mem 0x0000000000001000-0x000000000009efff]
node 0: [mem 0x0000000000100000-0x000000007ffdefff]
node 0: [mem 0x0000000100000000-0x0000000160000fff]
node 1: [mem 0x0000000160001000-0x000000023fffffff]
Initmem setup node 0 [mem 0x0000000000001000-0x0000000160000fff]
Initmem setup node 1 [mem 0x0000000160001000-0x000000023fffffff]
On node 0, zone DMA: 1 pages in unavailable ranges
On node 0, zone DMA: 97 pages in unavailable ranges
On node 0, zone Normal: 33 pages in unavailable ranges
setup_percpu: NR_CPUS:8 nr_cpumask_bits:2 nr_cpu_ids:2 nr_node_ids:2
percpu: Embedded 71 pages/cpu s250120 r8192 d32504 u2097152
kvm-guest: PV spinlocks disabled, no host support
Kernel command line: earlyprintk=serial net.ifnames=0 sysctl.kernel.hung_task_all_cpu_backtrace=1 ima_policy=tcb nf-conntrack-ftp.ports=20000 nf-conntrack-tftp.ports=20000 nf-conntrack-sip.ports=20000 nf-conntrack-irc.ports=20000 nf-conntrack-sane.ports=20000 binder.debug_mask=0 rcupdate.rcu_expedited=1 rcupdate.rcu_cpu_stall_cputime=1 no_hash_pointers page_owner=on sysctl.vm.nr_hugepages=4 sysctl.vm.nr_overcommit_hugepages=4 secretmem.enable=1 sysctl.max_rcu_stall_to_panic=1 msr.allow_writes=off coredump_filter=0xffff root=/dev/sda console=ttyS0 vsyscall=native numa=fake=2 kvm-intel.nested=1 spec_store_bypass_disable=prctl nopcid vivid.n_devs=64 vivid.multiplanar=1,2,1,2,1,2,1,2,1,2,1,2,1,2,1,2,1,2,1,2,1,2,1,2,1,2,1,2,1,2,1,2,1,2,1,2,1,2,1,2,1,2,1,2,1,2,1,2,1,2,1,2,1,2,1,2,1,2,1,2,1,2,1,2 netrom.nr_ndevs=32 rose.rose_ndevs=32 smp.csd_lock_timeout=100000 watchdog_thresh=55 workqueue.watchdog_thresh=140 sysctl.net.core.netdev_unregister_timeout_secs=140 dummy_hcd.num=32 max_loop=32 nbds_max=32 \
Kernel command line: comedi.comedi_num_legacy_minors=4 panic_on_warn=1 root=/dev/sda console=ttyS0 root=/dev/sda1
Unknown kernel command line parameters "nbds_max=32", will be passed to user space.
printk: log buffer data + meta data: 262144 + 917504 = 1179648 bytes
software IO TLB: area num 2.
Fallback order for Node 0: 0 1
Fallback order for Node 1: 1 0
Built 2 zonelists, mobility grouping on. Total pages: 1834877
Policy zone: Normal
mem auto-init: stack:all(zero), heap alloc:on, heap free:off
stackdepot: allocating hash table via alloc_large_system_hash
stackdepot hash table entries: 1048576 (order: 12, 16777216 bytes, linear)
stackdepot: allocating space for 8192 stack pools via memblock
**********************************************************
** NOTICE NOTICE NOTICE NOTICE NOTICE NOTICE NOTICE **
** **
** This system shows unhashed kernel memory addresses **
** via the console, logs, and other interfaces. This **
** might reduce the security of your system. **
** **
** If you see this message and you are not debugging **
** the kernel, report this immediately to your system **
** administrator! **
** **
** Use hash_pointers=always to force this mode off **
** **
** NOTICE NOTICE NOTICE NOTICE NOTICE NOTICE NOTICE **
**********************************************************
SLUB: HWalign=64, Order=0-3, MinObjects=0, CPUs=2, Nodes=2
allocated 146800640 bytes of page_ext
Node 0, zone DMA: page owner found early allocated 0 pages
Node 0, zone DMA32: page owner found early allocated 0 pages
Node 0, zone Normal: page owner found early allocated 18690 pages
Node 1, zone Normal: page owner found early allocated 17287 pages
Kernel/User page tables isolation: enabled
Dynamic Preempt: full
------------[ cut here ]------------
overflows_flex_counter_type(typeof(*ctx), pwq_tbl, __count)
WARNING: kernel/workqueue.c:5373 at apply_wqattrs_prepare+0xa5/0x1f0, CPU#0: swapper/0/0
Modules linked in:
CPU: 0 UID: 0 PID: 0 Comm: swapper/0 Not tainted syzkaller #0 PREEMPT(full)
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
RIP: 0010:apply_wqattrs_prepare+0xa5/0x1f0
Code: d8 48 c1 e8 03 42 0f b6 04 38 84 c0 0f 85 2b 01 00 00 8b 1b bf 05 00 00 00 89 de e8 a5 54 36 00 83 fb 06 0f 83 ce 00 00 00 90 <0f> 0b 90 48 c7 c0 60 11 19 8e 48 c1 e8 03 42 80 3c 38 00 74 0c 48
RSP: 0000:ffffffff8e407bf8 EFLAGS: 00010097
RAX: ffffffff818e826b RBX: 0000000000000000 RCX: 0000000000000000
RDX: ffffffff8e494f00 RSI: 0000000000000000 RDI: 0000000000000005
RBP: 0000000000000001 R08: ffffffff900fc8b7 R09: 1ffffffff201f916
R10: dffffc0000000000 R11: fffffbfff201f917 R12: ffff8881000ac9c8
R13: dffffc0000000000 R14: 0000000000000000 R15: dffffc0000000000
FS: 0000000000000000(0000) GS:ffff88818deba000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffff88823ffff000 CR3: 000000000e54a000 CR4: 00000000000000b0
Call Trace:
__alloc_workqueue+0xfc4/0x1e80
alloc_workqueue_noprof+0xe3/0x210
workqueue_init_early+0xaac/0xcf0
start_kernel+0x189/0x3d0
x86_64_start_reservations+0x24/0x30
x86_64_start_kernel+0x143/0x1c0
common_startup_64+0x13e/0x147
26-Feb-2026 16:20:06: output:
failed to run ["ssh" "-p" "34761" "-F" "/dev/null" "-o" "UserKnownHostsFile=/dev/null" "-o" "IdentitiesOnly=yes" "-o" "BatchMode=yes" "-o" "StrictHostKeyChecking=no" "-o" "ConnectTimeout=10" "root@localhost" "pwd"]: exit status 255[ 0.000000][ T0] Linux version syzkaller (syzkaller@syzkaller) (Debian clang version 21.1.8 (++20251221033036+2078da43e25a-1~exp1~20251221153213.50), Debian LLD 21.1.8) #0 SMP PREEMPT_DYNAMIC now
[ 0.000000][ T0] Command line: root=/dev/sda console=ttyS0 root=/dev/sda1
[ 0.000000][ T0] KERNEL supported cpus:
[ 0.000000][ T0] Intel GenuineIntel
[ 0.000000][ T0] AMD AuthenticAMD
[ 0.000000][ T0] x86/CPU: Model not found in latest microcode list
[ 0.000000][ T0] BIOS-provided physical RAM map:
[ 0.000000][ T0] BIOS-e820: [mem 0x0000000000000000-0x000000000009fbff] System RAM
[ 0.000000][ T0] BIOS-e820: [mem 0x000000000009fc00-0x000000000009ffff] device reserved
[ 0.000000][ T0] BIOS-e820: [gap 0x00000000000a0000-0x00000000000effff]
[ 0.000000][ T0] BIOS-e820: [mem 0x00000000000f0000-0x00000000000fffff] device reserved
[ 0.000000][ T0] BIOS-e820: [mem 0x0000000000100000-0x000000007ffdefff] System RAM
[ 0.000000][ T0] BIOS-e820: [mem 0x000000007ffdf000-0x000000007fffffff] device reserved
[ 0.000000][ T0] BIOS-e820: [gap 0x0000000080000000-0x00000000afffffff]
[ 0.000000][ T0] BIOS-e820: [mem 0x00000000b0000000-0x00000000bfffffff] device reserved
[ 0.000000][ T0] BIOS-e820: [gap 0x00000000c0000000-0x00000000fed1bfff]
[ 0.000000][ T0] BIOS-e820: [mem 0x00000000fed1c000-0x00000000fed1ffff] device reserved
[ 0.000000][ T0] BIOS-e820: [gap 0x00000000fed20000-0x00000000feffbfff]
[ 0.000000][ T0] BIOS-e820: [mem 0x00000000feffc000-0x00000000feffffff] device reserved
[ 0.000000][ T0] BIOS-e820: [gap 0x00000000ff000000-0x00000000fffbffff]
[ 0.000000][ T0] BIOS-e820: [mem 0x00000000fffc0000-0x00000000ffffffff] device reserved
[ 0.000000][ T0] BIOS-e820: [mem 0x0000000100000000-0x000000023fffffff] System RAM
[ 0.000000][ T0] printk: legacy bootconsole [earlyser0] enabled
[ 0.000000][ T0] ERROR: earlyprintk= earlyser already used
[ 0.000000][ T0] ERROR: earlyprintk= earlyser already used
[ 0.000000][ T0] Hash pointers mode set to never.
[ 0.000000][ T0] Malformed early option 'vsyscall'
[ 0.000000][ T0] NX (Execute Disable) protection: active
[ 0.000000][ T0] APIC: Static calls initialized
[ 0.000000][ T0] SMBIOS 2.8 present.
[ 0.000000][ T0] DMI: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
[ 0.000000][ T0] DMI: Memory slots populated: 1/1
[ 0.000000][ T0] Hypervisor detected: KVM
[ 0.000000][ T0] last_pfn = 0x7ffdf max_arch_pfn = 0x400000000
[ 0.000000][ T0] kvm-clock: Using msrs 4b564d01 and 4b564d00
[ 0.000009][ T0] kvm-clock: using sched offset of 2602300548 cycles
[ 0.004202][ T0] clocksource: kvm-clock: mask: 0xffffffffffffffff max_cycles: 0x1cd42e4dffb, max_idle_ns: 881590591483 ns
[ 0.017090][ T0] tsc: Detected 2800.076 MHz processor
[ 0.029057][ T0] last_pfn = 0x240000 max_arch_pfn = 0x400000000
[ 0.034120][ T0] MTRR map: 4 entries (3 fixed + 1 variable; max 19), built from 8 variable MTRRs
[ 0.040744][ T0] x86/PAT: Configuration [0-7]: WB WC UC- UC WB WP UC- WT
[ 0.046789][ T0] last_pfn = 0x7ffdf max_arch_pfn = 0x400000000
[ 0.060039][ T0] found SMP MP-table at [mem 0x000f5b80-0x000f5b8f]
[ 0.069425][ T0] ACPI: Early table checksum verification disabled
[ 0.074156][ T0] ACPI: RSDP 0x00000000000F5960 000014 (v00 BOCHS )
[ 0.079151][ T0] ACPI: RSDT 0x000000007FFE234D 000038 (v01 BOCHS BXPC 00000001 BXPC 00000001)
[ 0.085892][ T0] ACPI: FACP 0x000000007FFE213D 0000F4 (v03 BOCHS BXPC 00000001 BXPC 00000001)
[ 0.092697][ T0] ACPI: DSDT 0x000000007FFE0040 0020FD (v01 BOCHS BXPC 00000001 BXPC 00000001)
[ 0.099389][ T0] ACPI: FACS 0x000000007FFE0000 000040
[ 0.102742][ T0] ACPI: APIC 0x000000007FFE2231 000080 (v01 BOCHS BXPC 00000001 BXPC 00000001)
[ 0.108719][ T0] ACPI: HPET 0x000000007FFE22B1 000038 (v01 BOCHS BXPC 00000001 BXPC 00000001)
[ 0.115467][ T0] ACPI: MCFG 0x000000007FFE22E9 00003C (v01 BOCHS BXPC 00000001 BXPC 00000001)
[ 0.122061][ T0] ACPI: WAET 0x000000007FFE2325 000028 (v01 BOCHS BXPC 00000001 BXPC 00000001)
[ 0.128935][ T0] ACPI: Reserving FACP table memory at [mem 0x7ffe213d-0x7ffe2230]
[ 0.134704][ T0] ACPI: Reserving DSDT table memory at [mem 0x7ffe0040-0x7ffe213c]
[ 0.140335][ T0] ACPI: Reserving FACS table memory at [mem 0x7ffe0000-0x7ffe003f]
[ 0.145898][ T0] ACPI: Reserving APIC table memory at [mem 0x7ffe2231-0x7ffe22b0]
[ 0.151576][ T0] ACPI: Reserving HPET table memory at [mem 0x7ffe22b1-0x7ffe22e8]
[ 0.157252][ T0] ACPI: Reserving MCFG table memory at [mem 0x7ffe22e9-0x7ffe2324]
[ 0.162069][ T0] ACPI: Reserving WAET table memory at [mem 0x7ffe2325-0x7ffe234c]
[ 0.168113][ T0] No NUMA configuration found
[ 0.171143][ T0] Faking a node at [mem 0x0000000000000000-0x000000023fffffff]
[ 0.176608][ T0] Faking node 0 at [mem 0x0000000000001000-0x0000000160000fff] (5632MB)
[ 0.182635][ T0] Faking node 1 at [mem 0x0000000160001000-0x000000023fffffff] (3583MB)
[ 0.188729][ T0] NODE_DATA(0) allocated [mem 0x15fffb400-0x160000fff]
[ 0.194763][ T0] NODE_DATA(1) allocated [mem 0x23fff7400-0x23fffcfff]
[ 0.558578][ T0] KernelAddressSanitizer initialized (generic)
[ 0.565625][ T0] ACPI: PM-Timer IO Port: 0x608
[ 0.569334][ T0] ACPI: LAPIC_NMI (acpi_id[0xff] dfl dfl lint[0x1])
[ 0.573945][ T0] IOAPIC[0]: apic_id 0, version 17, address 0xfec00000, GSI 0-23
[ 0.579070][ T0] ACPI: INT_SRC_OVR (bus 0 bus_irq 0 global_irq 2 dfl dfl)
[ 0.584203][ T0] ACPI: INT_SRC_OVR (bus 0 bus_irq 5 global_irq 5 high level)
[ 0.588790][ T0] ACPI: INT_SRC_OVR (bus 0 bus_irq 9 global_irq 9 high level)
[ 0.593737][ T0] ACPI: INT_SRC_OVR (bus 0 bus_irq 10 global_irq 10 high level)
[ 0.599013][ T0] ACPI: INT_SRC_OVR (bus 0 bus_irq 11 global_irq 11 high level)
[ 0.604320][ T0] ACPI: Using ACPI (MADT) for SMP configuration information
[ 0.608980][ T0] ACPI: HPET id: 0x8086a201 base: 0xfed00000
[ 0.612538][ T0] CPU topo: Max. logical packages: 2
[ 0.615627][ T0] CPU topo: Max. logical dies: 2
[ 0.618741][ T0] CPU topo: Max. dies per package: 1
[ 0.622558][ T0] CPU topo: Max. threads per core: 1
[ 0.626392][ T0] CPU topo: Num. cores per package: 1
[ 0.630336][ T0] CPU topo: Num. threads per package: 1
[ 0.633818][ T0] CPU topo: Allowing 2 present CPUs plus 0 hotplug CPUs
[ 0.638371][ T0] kvm-guest: APIC: eoi() replaced with kvm_guest_apic_eoi_write()
[ 0.643926][ T0] PM: hibernation: Registered nosave memory: [mem 0x00000000-0x00000fff]
[ 0.649892][ T0] PM: hibernation: Registered nosave memory: [mem 0x0009f000-0x000fffff]
[ 0.656028][ T0] PM: hibernation: Registered nosave memory: [mem 0x7ffdf000-0xffffffff]
[ 0.662117][ T0] [gap 0xc0000000-0xfed1bfff] available for PCI devices
[ 0.667052][ T0] Booting paravirtualized kernel on KVM
[ 0.671090][ T0] clocksource: refined-jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 19112604462750000 ns
[ 0.794186][ T0] Section 41 and 43 (node 0) have a circular dependency on usemap and pgdat allocations
[ 0.824767][ T0] Zone ranges:
[ 0.827145][ T0] DMA [mem 0x0000000000001000-0x0000000000ffffff]
[ 0.832027][ T0] DMA32 [mem 0x0000000001000000-0x00000000ffffffff]
[ 0.836962][ T0] Normal [mem 0x0000000100000000-0x000000023fffffff]
[ 0.841890][ T0] Device empty
[ 0.844452][ T0] Movable zone start for each node
[ 0.847960][ T0] Early memory node ranges
[ 0.850973][ T0] node 0: [mem 0x0000000000001000-0x000000000009efff]
[ 0.855919][ T0] node 0: [mem 0x0000000000100000-0x000000007ffdefff]
[ 0.860923][ T0] node 0: [mem 0x0000000100000000-0x0000000160000fff]
[ 0.865941][ T0] node 1: [mem 0x0000000160001000-0x000000023fffffff]
[ 0.870830][ T0] Initmem setup node 0 [mem 0x0000000000001000-0x0000000160000fff]
[ 0.876356][ T0] Initmem setup node 1 [mem 0x0000000160001000-0x000000023fffffff]
[ 0.881907][ T0] On node 0, zone DMA: 1 pages in unavailable ranges
[ 0.886988][ T0] On node 0, zone DMA: 97 pages in unavailable ranges
[ 0.972327][ T0] On node 0, zone Normal: 33 pages in unavailable ranges
[ 1.056134][ T0] setup_percpu: NR_CPUS:8 nr_cpumask_bits:2 nr_cpu_ids:2 nr_node_ids:2
[ 1.063937][ T0] percpu: Embedded 71 pages/cpu s250120 r8192 d32504 u2097152
[ 1.069514][ T0] kvm-guest: PV spinlocks disabled, no host support
[ 1.074191][ T0] Kernel command line: earlyprintk=serial net.ifnames=0 sysctl.kernel.hung_task_all_cpu_backtrace=1 ima_policy=tcb nf-conntrack-ftp.ports=20000 nf-conntrack-tftp.ports=20000 nf-conntrack-sip.ports=20000 nf-conntrack-irc.ports=20000 nf-conntrack-sane.ports=20000 binder.debug_mask=0 rcupdate.rcu_expedited=1 rcupdate.rcu_cpu_stall_cputime=1 no_hash_pointers page_owner=on sysctl.vm.nr_hugepages=4 sysctl.vm.nr_overcommit_hugepages=4 secretmem.enable=1 sysctl.max_rcu_stall_to_panic=1 msr.allow_writes=off coredump_filter=0xffff root=/dev/sda console=ttyS0 vsyscall=native numa=fake=2 kvm-intel.nested=1 spec_store_bypass_disable=prctl nopcid vivid.n_devs=64 vivid.multiplanar=1,2,1,2,1,2,1,2,1,2,1,2,1,2,1,2,1,2,1,2,1,2,1,2,1,2,1,2,1,2,1,2,1,2,1,2,1,2,1,2,1,2,1,2,1,2,1,2,1,2,1,2,1,2,1,2,1,2,1,2,1,2,1,2 netrom.nr_ndevs=32 rose.rose_ndevs=32 smp.csd_lock_timeout=100000 watchdog_thresh=55 workqueue.watchdog_thresh=140 sysctl.net.core.netdev_unregister_timeout_secs=140 dummy_hcd.num=32 max_loop=32 nbds_max=32 \
[ 1.138976][ T0] Kernel command line: comedi.comedi_num_legacy_minors=4 panic_on_warn=1 root=/dev/sda console=ttyS0 root=/dev/sda1
[ 1.152713][ T0] Unknown kernel command line parameters "nbds_max=32", will be passed to user space.
[ 1.159759][ T0] printk: log buffer data + meta data: 262144 + 917504 = 1179648 bytes
[ 1.166013][ T0] software IO TLB: area num 2.
[ 1.207553][ T0] Fallback order for Node 0: 0 1
[ 1.207582][ T0] Fallback order for Node 1: 1 0
[ 1.207601][ T0] Built 2 zonelists, mobility grouping on. Total pages: 1834877
[ 1.218011][ T0] Policy zone: Normal
[ 1.221082][ T0] mem auto-init: stack:all(zero), heap alloc:on, heap free:off
[ 1.225339][ T0] stackdepot: allocating hash table via alloc_large_system_hash
[ 1.229764][ T0] stackdepot hash table entries: 1048576 (order: 12, 16777216 bytes, linear)
[ 1.241993][ T0] stackdepot: allocating space for 8192 stack pools via memblock
[ 1.990628][ T0] **********************************************************
[ 1.994412][ T0] ** NOTICE NOTICE NOTICE NOTICE NOTICE NOTICE NOTICE **
[ 1.998472][ T0] ** **
[ 2.002460][ T0] ** This system shows unhashed kernel memory addresses **
[ 2.006575][ T0] ** via the console, logs, and other interfaces. This **
[ 2.010534][ T0] ** might reduce the security of your system. **
[ 2.014758][ T0] ** **
[ 2.018160][ T0] ** If you see this message and you are not debugging **
[ 2.021383][ T0] ** the kernel, report this immediately to your system **
[ 2.024711][ T0] ** administrator! **
[ 2.027948][ T0] ** **
[ 2.031143][ T0] ** Use hash_pointers=always to force this mode off **
[ 2.034508][ T0] ** **
[ 2.037729][ T0] ** NOTICE NOTICE NOTICE NOTICE NOTICE NOTICE NOTICE **
[ 2.040876][ T0] **********************************************************
[ 2.046892][ T0] SLUB: HWalign=64, Order=0-3, MinObjects=0, CPUs=2, Nodes=2
[ 2.183808][ T0] allocated 146800640 bytes of page_ext
[ 2.186736][ T0] Node 0, zone DMA: page owner found early allocated 0 pages
[ 2.195120][ T0] Node 0, zone DMA32: page owner found early allocated 0 pages
[ 2.214548][ T0] Node 0, zone Normal: page owner found early allocated 18690 pages
[ 2.226790][ T0] Node 1, zone Normal: page owner found early allocated 17287 pages
[ 2.231252][ T0] Kernel/User page tables isolation: enabled
[ 2.235158][ T0] Dynamic Preempt: full
[ 2.238203][ T0] ------------[ cut here ]------------
[ 2.240712][ T0] overflows_flex_counter_type(typeof(*ctx), pwq_tbl, __count)
[ 2.240719][ T0] WARNING: kernel/workqueue.c:5373 at apply_wqattrs_prepare+0xa5/0x1f0, CPU#0: swapper/0/0
[ 2.249980][ T0] Modules linked in:
[ 2.252161][ T0] CPU: 0 UID: 0 PID: 0 Comm: swapper/0 Not tainted syzkaller #0 PREEMPT(full)
[ 2.257367][ T0] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
[ 2.263141][ T0] RIP: 0010:apply_wqattrs_prepare+0xa5/0x1f0
[ 2.266508][ T0] Code: d8 48 c1 e8 03 42 0f b6 04 38 84 c0 0f 85 2b 01 00 00 8b 1b bf 05 00 00 00 89 de e8 a5 54 36 00 83 fb 06 0f 83 ce 00 00 00 90 <0f> 0b 90 48 c7 c0 60 11 19 8e 48 c1 e8 03 42 80 3c 38 00 74 0c 48
[ 2.277786][ T0] RSP: 0000:ffffffff8e407bf8 EFLAGS: 00010097
[ 2.281208][ T0] RAX: ffffffff818e826b RBX: 0000000000000000 RCX: 0000000000000000
[ 2.285763][ T0] RDX: ffffffff8e494f00 RSI: 0000000000000000 RDI: 0000000000000005
[ 2.290298][ T0] RBP: 0000000000000001 R08: ffffffff900fc8b7 R09: 1ffffffff201f916
[ 2.294819][ T0] R10: dffffc0000000000 R11: fffffbfff201f917 R12: ffff8881000ac9c8
[ 2.299349][ T0] R13: dffffc0000000000 R14: 0000000000000000 R15: dffffc0000000000
[ 2.303877][ T0] FS: 0000000000000000(0000) GS:ffff88818deba000(0000) knlGS:0000000000000000
[ 2.308952][ T0] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 2.312705][ T0] CR2: ffff88823ffff000 CR3: 000000000e54a000 CR4: 00000000000000b0
[ 2.317236][ T0] Call Trace:
[ 2.319064][ T0]
[ 2.320695][ T0] __alloc_workqueue+0xfc4/0x1e80
[ 2.323231][ T0] alloc_workqueue_noprof+0xe3/0x210
[ 2.325766][ T0] ? is_dynamic_key+0xd6/0x1c0
[ 2.328262][ T0] ? __pfx_alloc_workqueue_noprof+0x10/0x10
[ 2.331230][ T0] ? __kmalloc_cache_noprof+0x31c/0x660
[ 2.334378][ T0] ? workqueue_init_early+0x89b/0xcf0
[ 2.337433][ T0] ? __kmalloc_cache_noprof+0x15b/0x660
[ 2.340382][ T0] workqueue_init_early+0xaac/0xcf0
[ 2.342771][ T0] ? __cpuhp_setup_state+0x46/0x60
[ 2.345103][ T0] ? __pfx_workqueue_init_early+0x10/0x10
[ 2.348028][ T0] ? register_trace_event+0x3f7/0x4b0
[ 2.350542][ T0] start_kernel+0x189/0x3d0
[ 2.352923][ T0] x86_64_start_reservations+0x24/0x30
[ 2.355652][ T0] x86_64_start_kernel+0x143/0x1c0
[ 2.357950][ T0] common_startup_64+0x13e/0x147
[ 2.360146][ T0]
[ 2.361804][ T0] Kernel panic - not syncing: kernel: panic_on_warn set ...
[ 2.365814][ T0] CPU: 0 UID: 0 PID: 0 Comm: swapper/0 Not tainted syzkaller #0 PREEMPT(full)
[ 2.370861][ T0] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
[ 2.375561][ T0] Call Trace:
[ 2.377374][ T0]
[ 2.378747][ T0] vpanic+0x56c/0xa60
[ 2.380372][ T0] ? __pfx__printk+0x10/0x10
[ 2.382556][ T0] ? __pfx_vpanic+0x10/0x10
[ 2.384704][ T0] ? is_bpf_text_address+0x292/0x2b0
[ 2.387496][ T0] ? is_bpf_text_address+0x26/0x2b0
[ 2.390474][ T0] panic+0xc5/0xd0
[ 2.392274][ T0] ? __pfx_panic+0x10/0x10
[ 2.394251][ T0] ? common_startup_64+0x13e/0x147
[ 2.396643][ T0] __warn+0x315/0x4f0
[ 2.398524][ T0] ? apply_wqattrs_prepare+0xa5/0x1f0
[ 2.401185][ T0] ? apply_wqattrs_prepare+0xa5/0x1f0
[ 2.404254][ T0] __report_bug+0x29a/0x540
[ 2.406588][ T0] ? apply_wqattrs_prepare+0xa5/0x1f0
[ 2.409733][ T0] ? __pfx___report_bug+0x10/0x10
[ 2.412628][ T0] ? __mutex_unlock_slowpath+0x1bd/0x7d0
[ 2.415414][ T0] ? pcpu_chunk_relocate+0x1df/0x470
[ 2.417949][ T0] ? __pfx___mutex_unlock_slowpath+0x10/0x10
[ 2.420807][ T0] ? __native_queued_spin_unlock+0xd/0x50
[ 2.423322][ T0] ? apply_wqattrs_prepare+0xa5/0x1f0
[ 2.425623][ T0] report_bug+0x16a/0x220
[ 2.427907][ T0] ? apply_wqattrs_prepare+0xa5/0x1f0
[ 2.430947][ T0] ? apply_wqattrs_prepare+0xa7/0x1f0
[ 2.433953][ T0] handle_bug+0x98/0x200
[ 2.436161][ T0] exc_invalid_op+0x1a/0x50
[ 2.438512][ T0] asm_exc_invalid_op+0x1a/0x20
[ 2.441249][ T0] RIP: 0010:apply_wqattrs_prepare+0xa5/0x1f0
[ 2.444425][ T0] Code: d8 48 c1 e8 03 42 0f b6 04 38 84 c0 0f 85 2b 01 00 00 8b 1b bf 05 00 00 00 89 de e8 a5 54 36 00 83 fb 06 0f 83 ce 00 00 00 90 <0f> 0b 90 48 c7 c0 60 11 19 8e 48 c1 e8 03 42 80 3c 38 00 74 0c 48
[ 2.454825][ T0] RSP: 0000:ffffffff8e407bf8 EFLAGS: 00010097
[ 2.457773][ T0] RAX: ffffffff818e826b RBX: 0000000000000000 RCX: 0000000000000000
[ 2.462120][ T0] RDX: ffffffff8e494f00 RSI: 0000000000000000 RDI: 0000000000000005
[ 2.466667][ T0] RBP: 0000000000000001 R08: ffffffff900fc8b7 R09: 1ffffffff201f916
[ 2.471230][ T0] R10: dffffc0000000000 R11: fffffbfff201f917 R12: ffff8881000ac9c8
[ 2.475787][ T0] R13: dffffc0000000000 R14: 0000000000000000 R15: dffffc0000000000
[ 2.480333][ T0] ? apply_wqattrs_prepare+0x9b/0x1f0
[ 2.483406][ T0] ? apply_wqattrs_prepare+0x9b/0x1f0
[ 2.486497][ T0] __alloc_workqueue+0xfc4/0x1e80
[ 2.489408][ T0] alloc_workqueue_noprof+0xe3/0x210
[ 2.492529][ T0] ? is_dynamic_key+0xd6/0x1c0
[ 2.494847][ T0] ? __pfx_alloc_workqueue_noprof+0x10/0x10
[ 2.497902][ T0] ? __kmalloc_cache_noprof+0x31c/0x660
[ 2.500522][ T0] ? workqueue_init_early+0x89b/0xcf0
[ 2.503624][ T0] ? __kmalloc_cache_noprof+0x15b/0x660
[ 2.506776][ T0] workqueue_init_early+0xaac/0xcf0
[ 2.509748][ T0] ? __cpuhp_setup_state+0x46/0x60
[ 2.512653][ T0] ? __pfx_workqueue_init_early+0x10/0x10
[ 2.515884][ T0] ? register_trace_event+0x3f7/0x4b0
[ 2.518923][ T0] start_kernel+0x189/0x3d0
[ 2.521394][ T0] x86_64_start_reservations+0x24/0x30
[ 2.524515][ T0] x86_64_start_kernel+0x143/0x1c0
[ 2.527440][ T0] common_startup_64+0x13e/0x147
[ 2.530317][ T0]
[ 2.532426][ T0] Rebooting in 86400 seconds..