04-Feb-2026 09:40:33: starting attempt #0
04-Feb-2026 09:50:41: attempt failed: "WARNING in cp_is_new_root"
04-Feb-2026 09:50:41: starting attempt #1
04-Feb-2026 10:00:49: attempt failed: "WARNING in cp_is_new_root"
04-Feb-2026 10:00:49: starting attempt #2
04-Feb-2026 10:10:56: attempt failed: "WARNING in cp_is_new_root"
04-Feb-2026 10:10:56: report:
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 18662 pages
Node 1, zone Normal: page owner found early allocated 17283 pages
Kernel/User page tables isolation: enabled
Dynamic Preempt: full
Running RCU self tests
Running RCU synchronous self tests
rcu: Preemptible hierarchical RCU implementation.
rcu: RCU lockdep checking is enabled.
rcu: RCU restricting CPUs from NR_CPUS=8 to nr_cpu_ids=2.
rcu: RCU callback double-/use-after-free debug is enabled.
rcu: RCU debug extended QS entry/exit.
All grace periods are expedited (rcu_expedited).
Trampoline variant of Tasks RCU enabled.
Tracing variant of Tasks RCU enabled.
rcu: RCU calculated value of scheduler-enlistment delay is 10 jiffies.
rcu: Adjusting geometry for rcu_fanout_leaf=16, nr_cpu_ids=2
Running RCU synchronous self tests
RCU Tasks: Setting shift to 1 and lim to 1 rcu_task_cb_adjust=1 rcu_task_cpu_ids=2.
RCU Tasks Trace: Setting shift to 1 and lim to 1 rcu_task_cb_adjust=1 rcu_task_cpu_ids=2.
NR_IRQS: 4352, nr_irqs: 440, preallocated irqs: 16
------------[ cut here ]------------
cp->dst[0].node != mte_to_node( mt_slot_locked(mas->tree, cp->slot, 0))
WARNING: lib/maple_tree.c:2618 at cp_is_new_root+0x753/0x8a0, 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:cp_is_new_root+0x753/0x8a0
Code: 00 74 08 48 89 df e8 6c ca b6 f6 4c 89 33 b0 01 48 83 c4 18 5b 41 5c 41 5d 41 5e 41 5f 5d 2e e9 c3 c4 08 00 e8 be 6d 4f f6 90 <0f> 0b 90 43 80 3c 2f 00 0f 85 0b fd ff ff e9 0e fd ff ff 44 89 f9
RSP: 0000:ffffffff8e007250 EFLAGS: 00010093
RAX: ffffffff8b732c32 RBX: ffffffff8e007e00 RCX: ffffffff8e0953c0
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: ffff888100efd64f R09: 0000000000000000
R10: ffff888100efd618 R11: ffffed10201dfaca R12: ffffffff8e007648
R13: dffffc0000000000 R14: ffffffff8e0075a0 R15: 1ffffffff1c00fc0
FS: 0000000000000000(0000) GS:ffff88818e324000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffff88823ffff000 CR3: 000000000e146000 CR4: 00000000000000b0
Call Trace:
mas_wr_store_entry+0x27f9/0x6f10
mas_store_gfp+0x6a0/0x850
irq_insert_desc+0x10b/0x1a0
early_irq_init+0x124/0x170
start_kernel+0x1ab/0x3d0
x86_64_start_reservations+0x24/0x30
x86_64_start_kernel+0x143/0x1c0
common_startup_64+0x13e/0x147
04-Feb-2026 10:10:56: output:
failed to run ["ssh" "-p" "26780" "-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] usable
[ 0.000000][ T0] BIOS-e820: [mem 0x000000000009fc00-0x000000000009ffff] reserved
[ 0.000000][ T0] BIOS-e820: [mem 0x00000000000f0000-0x00000000000fffff] reserved
[ 0.000000][ T0] BIOS-e820: [mem 0x0000000000100000-0x000000007ffdefff] usable
[ 0.000000][ T0] BIOS-e820: [mem 0x000000007ffdf000-0x000000007fffffff] reserved
[ 0.000000][ T0] BIOS-e820: [mem 0x00000000b0000000-0x00000000bfffffff] reserved
[ 0.000000][ T0] BIOS-e820: [mem 0x00000000fed1c000-0x00000000fed1ffff] reserved
[ 0.000000][ T0] BIOS-e820: [mem 0x00000000feffc000-0x00000000feffffff] reserved
[ 0.000000][ T0] BIOS-e820: [mem 0x00000000fffc0000-0x00000000ffffffff] reserved
[ 0.000000][ T0] BIOS-e820: [mem 0x0000000100000000-0x000000023fffffff] usable
[ 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
[ 0.000006][ T0] kvm-clock: using sched offset of 1998875897 cycles
[ 0.003453][ T0] clocksource: kvm-clock: mask: 0xffffffffffffffff max_cycles: 0x1cd42e4dffb, max_idle_ns: 881590591483 ns
[ 0.013726][ T0] tsc: Detected 2800.220 MHz processor
[ 0.023038][ T0] last_pfn = 0x240000 max_arch_pfn = 0x400000000
[ 0.027211][ T0] MTRR map: 4 entries (3 fixed + 1 variable; max 19), built from 8 variable MTRRs
[ 0.032353][ T0] x86/PAT: Configuration [0-7]: WB WC UC- UC WB WP UC- WT
[ 0.036942][ T0] last_pfn = 0x7ffdf max_arch_pfn = 0x400000000
[ 0.048868][ T0] found SMP MP-table at [mem 0x000f5b80-0x000f5b8f]
[ 0.057578][ T0] ACPI: Early table checksum verification disabled
[ 0.061648][ T0] ACPI: RSDP 0x00000000000F5960 000014 (v00 BOCHS )
[ 0.065689][ T0] ACPI: RSDT 0x000000007FFE234D 000038 (v01 BOCHS BXPC 00000001 BXPC 00000001)
[ 0.071090][ T0] ACPI: FACP 0x000000007FFE213D 0000F4 (v03 BOCHS BXPC 00000001 BXPC 00000001)
[ 0.076663][ T0] ACPI: DSDT 0x000000007FFE0040 0020FD (v01 BOCHS BXPC 00000001 BXPC 00000001)
[ 0.082453][ T0] ACPI: FACS 0x000000007FFE0000 000040
[ 0.085821][ T0] ACPI: APIC 0x000000007FFE2231 000080 (v01 BOCHS BXPC 00000001 BXPC 00000001)
[ 0.091512][ T0] ACPI: HPET 0x000000007FFE22B1 000038 (v01 BOCHS BXPC 00000001 BXPC 00000001)
[ 0.096899][ T0] ACPI: MCFG 0x000000007FFE22E9 00003C (v01 BOCHS BXPC 00000001 BXPC 00000001)
[ 0.102506][ T0] ACPI: WAET 0x000000007FFE2325 000028 (v01 BOCHS BXPC 00000001 BXPC 00000001)
[ 0.107815][ T0] ACPI: Reserving FACP table memory at [mem 0x7ffe213d-0x7ffe2230]
[ 0.112659][ T0] ACPI: Reserving DSDT table memory at [mem 0x7ffe0040-0x7ffe213c]
[ 0.117107][ T0] ACPI: Reserving FACS table memory at [mem 0x7ffe0000-0x7ffe003f]
[ 0.121875][ T0] ACPI: Reserving APIC table memory at [mem 0x7ffe2231-0x7ffe22b0]
[ 0.126312][ T0] ACPI: Reserving HPET table memory at [mem 0x7ffe22b1-0x7ffe22e8]
[ 0.130836][ T0] ACPI: Reserving MCFG table memory at [mem 0x7ffe22e9-0x7ffe2324]
[ 0.135595][ T0] ACPI: Reserving WAET table memory at [mem 0x7ffe2325-0x7ffe234c]
[ 0.142109][ T0] No NUMA configuration found
[ 0.144748][ T0] Faking a node at [mem 0x0000000000000000-0x000000023fffffff]
[ 0.149063][ T0] Faking node 0 at [mem 0x0000000000001000-0x0000000160000fff] (5632MB)
[ 0.153699][ T0] Faking node 1 at [mem 0x0000000160001000-0x000000023fffffff] (3583MB)
[ 0.158328][ T0] NODE_DATA(0) allocated [mem 0x15fffb400-0x160000fff]
[ 0.162905][ T0] NODE_DATA(1) allocated [mem 0x23fff7400-0x23fffcfff]
[ 0.416853][ T0] KernelAddressSanitizer initialized (generic)
[ 0.422661][ T0] ACPI: PM-Timer IO Port: 0x608
[ 0.425706][ T0] ACPI: LAPIC_NMI (acpi_id[0xff] dfl dfl lint[0x1])
[ 0.430107][ T0] IOAPIC[0]: apic_id 0, version 17, address 0xfec00000, GSI 0-23
[ 0.434841][ T0] ACPI: INT_SRC_OVR (bus 0 bus_irq 0 global_irq 2 dfl dfl)
[ 0.439201][ T0] ACPI: INT_SRC_OVR (bus 0 bus_irq 5 global_irq 5 high level)
[ 0.443607][ T0] ACPI: INT_SRC_OVR (bus 0 bus_irq 9 global_irq 9 high level)
[ 0.448303][ T0] ACPI: INT_SRC_OVR (bus 0 bus_irq 10 global_irq 10 high level)
[ 0.452603][ T0] ACPI: INT_SRC_OVR (bus 0 bus_irq 11 global_irq 11 high level)
[ 0.457176][ T0] ACPI: Using ACPI (MADT) for SMP configuration information
[ 0.461053][ T0] ACPI: HPET id: 0x8086a201 base: 0xfed00000
[ 0.464366][ T0] CPU topo: Max. logical packages: 2
[ 0.467703][ T0] CPU topo: Max. logical dies: 2
[ 0.470686][ T0] CPU topo: Max. dies per package: 1
[ 0.473948][ T0] CPU topo: Max. threads per core: 1
[ 0.477202][ T0] CPU topo: Num. cores per package: 1
[ 0.480591][ T0] CPU topo: Num. threads per package: 1
[ 0.483921][ T0] CPU topo: Allowing 2 present CPUs plus 0 hotplug CPUs
[ 0.488030][ T0] kvm-guest: APIC: eoi() replaced with kvm_guest_apic_eoi_write()
[ 0.493123][ T0] PM: hibernation: Registered nosave memory: [mem 0x00000000-0x00000fff]
[ 0.498124][ T0] PM: hibernation: Registered nosave memory: [mem 0x0009f000-0x000fffff]
[ 0.502914][ T0] PM: hibernation: Registered nosave memory: [mem 0x7ffdf000-0xffffffff]
[ 0.507538][ T0] [mem 0xc0000000-0xfed1bfff] available for PCI devices
[ 0.511360][ T0] Booting paravirtualized kernel on KVM
[ 0.514361][ T0] clocksource: refined-jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 19112604462750000 ns
[ 0.614064][ T0] Section 41 and 43 (node 0) have a circular dependency on usemap and pgdat allocations
[ 0.635994][ T0] Zone ranges:
[ 0.637907][ T0] DMA [mem 0x0000000000001000-0x0000000000ffffff]
[ 0.642225][ T0] DMA32 [mem 0x0000000001000000-0x00000000ffffffff]
[ 0.646682][ T0] Normal [mem 0x0000000100000000-0x000000023fffffff]
[ 0.650723][ T0] Device empty
[ 0.652859][ T0] Movable zone start for each node
[ 0.655714][ T0] Early memory node ranges
[ 0.658337][ T0] node 0: [mem 0x0000000000001000-0x000000000009efff]
[ 0.662456][ T0] node 0: [mem 0x0000000000100000-0x000000007ffdefff]
[ 0.666425][ T0] node 0: [mem 0x0000000100000000-0x0000000160000fff]
[ 0.670283][ T0] node 1: [mem 0x0000000160001000-0x000000023fffffff]
[ 0.674187][ T0] Initmem setup node 0 [mem 0x0000000000001000-0x0000000160000fff]
[ 0.678509][ T0] Initmem setup node 1 [mem 0x0000000160001000-0x000000023fffffff]
[ 0.682798][ T0] On node 0, zone DMA: 1 pages in unavailable ranges
[ 0.686616][ T0] On node 0, zone DMA: 97 pages in unavailable ranges
[ 0.741832][ T0] On node 0, zone Normal: 33 pages in unavailable ranges
[ 0.797190][ T0] setup_percpu: NR_CPUS:8 nr_cpumask_bits:2 nr_cpu_ids:2 nr_node_ids:2
[ 0.803159][ T0] percpu: Embedded 70 pages/cpu s248968 r8192 d29560 u2097152
[ 0.807724][ T0] kvm-guest: PV spinlocks disabled, no host support
[ 0.811578][ 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 \
[ 0.864467][ T0] Kernel command line: comedi.comedi_num_legacy_minors=4 panic_on_warn=1 root=/dev/sda console=ttyS0 root=/dev/sda1
[ 0.875668][ T0] Unknown kernel command line parameters "nbds_max=32", will be passed to user space.
[ 0.881111][ T0] printk: log buffer data + meta data: 262144 + 917504 = 1179648 bytes
[ 0.886656][ T0] software IO TLB: area num 2.
[ 0.915853][ T0] Fallback order for Node 0: 0 1
[ 0.915872][ T0] Fallback order for Node 1: 1 0
[ 0.915882][ T0] Built 2 zonelists, mobility grouping on. Total pages: 1834877
[ 0.924046][ T0] Policy zone: Normal
[ 0.926417][ T0] mem auto-init: stack:all(zero), heap alloc:on, heap free:off
[ 0.929817][ T0] stackdepot: allocating hash table via alloc_large_system_hash
[ 0.933215][ T0] stackdepot hash table entries: 1048576 (order: 12, 16777216 bytes, linear)
[ 0.941241][ T0] stackdepot: allocating space for 8192 stack pools via memblock
[ 1.404330][ T0] **********************************************************
[ 1.408275][ T0] ** NOTICE NOTICE NOTICE NOTICE NOTICE NOTICE NOTICE **
[ 1.411722][ T0] ** **
[ 1.415323][ T0] ** This system shows unhashed kernel memory addresses **
[ 1.418568][ T0] ** via the console, logs, and other interfaces. This **
[ 1.421863][ T0] ** might reduce the security of your system. **
[ 1.425129][ T0] ** **
[ 1.428375][ T0] ** If you see this message and you are not debugging **
[ 1.431631][ T0] ** the kernel, report this immediately to your system **
[ 1.434868][ T0] ** administrator! **
[ 1.438114][ T0] ** **
[ 1.441362][ T0] ** Use hash_pointers=always to force this mode off **
[ 1.444606][ T0] ** **
[ 1.447840][ T0] ** NOTICE NOTICE NOTICE NOTICE NOTICE NOTICE NOTICE **
[ 1.451075][ T0] **********************************************************
[ 1.455698][ T0] SLUB: HWalign=64, Order=0-3, MinObjects=0, CPUs=2, Nodes=2
[ 1.548124][ T0] allocated 146800640 bytes of page_ext
[ 1.550607][ T0] Node 0, zone DMA: page owner found early allocated 0 pages
[ 1.556136][ T0] Node 0, zone DMA32: page owner found early allocated 0 pages
[ 1.572443][ T0] Node 0, zone Normal: page owner found early allocated 18662 pages
[ 1.584195][ T0] Node 1, zone Normal: page owner found early allocated 17283 pages
[ 1.588175][ T0] Kernel/User page tables isolation: enabled
[ 1.591889][ T0] Dynamic Preempt: full
[ 1.594883][ T0] Running RCU self tests
[ 1.596863][ T0] Running RCU synchronous self tests
[ 1.599195][ T0] rcu: Preemptible hierarchical RCU implementation.
[ 1.602105][ T0] rcu: RCU lockdep checking is enabled.
[ 1.604582][ T0] rcu: RCU restricting CPUs from NR_CPUS=8 to nr_cpu_ids=2.
[ 1.607885][ T0] rcu: RCU callback double-/use-after-free debug is enabled.
[ 1.611797][ T0] rcu: RCU debug extended QS entry/exit.
[ 1.614307][ T0] All grace periods are expedited (rcu_expedited).
[ 1.617271][ T0] Trampoline variant of Tasks RCU enabled.
[ 1.619918][ T0] Tracing variant of Tasks RCU enabled.
[ 1.622434][ T0] rcu: RCU calculated value of scheduler-enlistment delay is 10 jiffies.
[ 1.626170][ T0] rcu: Adjusting geometry for rcu_fanout_leaf=16, nr_cpu_ids=2
[ 1.629841][ T0] Running RCU synchronous self tests
[ 1.632200][ T0] RCU Tasks: Setting shift to 1 and lim to 1 rcu_task_cb_adjust=1 rcu_task_cpu_ids=2.
[ 1.636455][ T0] RCU Tasks Trace: Setting shift to 1 and lim to 1 rcu_task_cb_adjust=1 rcu_task_cpu_ids=2.
[ 1.753867][ T0] NR_IRQS: 4352, nr_irqs: 440, preallocated irqs: 16
[ 1.757756][ T0] ------------[ cut here ]------------
[ 1.760434][ T0] cp->dst[0].node != mte_to_node( mt_slot_locked(mas->tree, cp->slot, 0))
[ 1.760444][ T0] WARNING: lib/maple_tree.c:2618 at cp_is_new_root+0x753/0x8a0, CPU#0: swapper/0/0
[ 1.768963][ T0] Modules linked in:
[ 1.770678][ T0] CPU: 0 UID: 0 PID: 0 Comm: swapper/0 Not tainted syzkaller #0 PREEMPT(full)
[ 1.774736][ T0] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
[ 1.779404][ T0] RIP: 0010:cp_is_new_root+0x753/0x8a0
[ 1.781804][ T0] Code: 00 74 08 48 89 df e8 6c ca b6 f6 4c 89 33 b0 01 48 83 c4 18 5b 41 5c 41 5d 41 5e 41 5f 5d 2e e9 c3 c4 08 00 e8 be 6d 4f f6 90 <0f> 0b 90 43 80 3c 2f 00 0f 85 0b fd ff ff e9 0e fd ff ff 44 89 f9
[ 1.790794][ T0] RSP: 0000:ffffffff8e007250 EFLAGS: 00010093
[ 1.793648][ T0] RAX: ffffffff8b732c32 RBX: ffffffff8e007e00 RCX: ffffffff8e0953c0
[ 1.797157][ T0] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
[ 1.800734][ T0] RBP: 0000000000000000 R08: ffff888100efd64f R09: 0000000000000000
[ 1.804225][ T0] R10: ffff888100efd618 R11: ffffed10201dfaca R12: ffffffff8e007648
[ 1.807725][ T0] R13: dffffc0000000000 R14: ffffffff8e0075a0 R15: 1ffffffff1c00fc0
[ 1.811614][ T0] FS: 0000000000000000(0000) GS:ffff88818e324000(0000) knlGS:0000000000000000
[ 1.816463][ T0] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1.819722][ T0] CR2: ffff88823ffff000 CR3: 000000000e146000 CR4: 00000000000000b0
[ 1.823926][ T0] Call Trace:
[ 1.825715][ T0]
[ 1.827058][ T0] mas_wr_store_entry+0x27f9/0x6f10
[ 1.829313][ T0] ? common_startup_64+0x13e/0x147
[ 1.831879][ T0] ? __pfx_mas_wr_store_entry+0x10/0x10
[ 1.834750][ T0] ? common_startup_64+0x13e/0x147
[ 1.836960][ T0] ? stack_trace_save+0xa9/0x100
[ 1.839377][ T0] ? __pfx_stack_trace_save+0x10/0x10
[ 1.841870][ T0] ? __lock_acquire+0x6b5/0x2cf0
[ 1.844007][ T0] ? __update_page_owner_handle+0x5a/0x570
[ 1.846485][ T0] ? __update_page_owner_handle+0x5a/0x570
[ 1.849067][ T0] ? prep_compound_page+0x2f6/0x6d0
[ 1.851301][ T0] ? lock_acquire+0x106/0x330
[ 1.853297][ T0] ? __native_queued_spin_unlock+0xd/0x50
[ 1.855758][ T0] ? do_raw_spin_unlock+0xf6/0x210
[ 1.857963][ T0] ? __lock_acquire+0x6b5/0x2cf0
[ 1.860300][ T0] ? __alloc_frozen_pages_noprof+0x1de/0x380
[ 1.863006][ T0] ? __lock_acquire+0x6b5/0x2cf0
[ 1.865704][ T0] ? local_trylock_acquire+0xb/0x80
[ 1.868523][ T0] ? lock_acquire+0x106/0x330
[ 1.871077][ T0] ? local_trylock_acquire+0xb/0x80
[ 1.873931][ T0] ? local_lock_acquire+0xb/0x70
[ 1.876611][ T0] ? lock_acquire+0x106/0x330
[ 1.879151][ T0] ? local_lock_acquire+0xb/0x70
[ 1.881949][ T0] ? __kmem_cache_alloc_bulk+0x92/0x4d0
[ 1.884785][ T0] ? __kmem_cache_alloc_bulk+0x3c0/0x4d0
[ 1.887832][ T0] ? kmem_cache_prefill_sheaf+0x6d/0x480
[ 1.890884][ T0] ? __kmem_cache_alloc_bulk+0x92/0x4d0
[ 1.893712][ T0] ? kmem_cache_prefill_sheaf+0x2b9/0x480
[ 1.896943][ T0] ? kmem_cache_prefill_sheaf+0x6d/0x480
[ 1.900000][ T0] ? mas_alloc_nodes+0x1f0/0x350
[ 1.902680][ T0] mas_store_gfp+0x6a0/0x850
[ 1.905196][ T0] ? __mutex_unlock_slowpath+0x1bd/0x7d0
[ 1.908283][ T0] ? __pfx_mas_store_gfp+0x10/0x10
[ 1.910665][ T0] ? pcpu_alloc+0x10/0x360
[ 1.912953][ T0] irq_insert_desc+0x10b/0x1a0
[ 1.915123][ T0] ? __pfx_irq_insert_desc+0x10/0x10
[ 1.917515][ T0] ? do_raw_spin_unlock+0xf6/0x210
[ 1.920035][ T0] early_irq_init+0x124/0x170
[ 1.922386][ T0] start_kernel+0x1ab/0x3d0
[ 1.924465][ T0] x86_64_start_reservations+0x24/0x30
[ 1.927078][ T0] x86_64_start_kernel+0x143/0x1c0
[ 1.929569][ T0] common_startup_64+0x13e/0x147
[ 1.931780][ T0]
[ 1.933107][ T0] Kernel panic - not syncing: kernel: panic_on_warn set ...
[ 1.936263][ T0] CPU: 0 UID: 0 PID: 0 Comm: swapper/0 Not tainted syzkaller #0 PREEMPT(full)
[ 1.940382][ T0] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
[ 1.944774][ T0] Call Trace:
[ 1.946189][ T0]
[ 1.947414][ T0] vpanic+0x1e0/0x670
[ 1.949128][ T0] panic+0xc5/0xd0
[ 1.950723][ T0] ? __pfx_panic+0x10/0x10
[ 1.952638][ T0] ? common_startup_64+0x13e/0x147
[ 1.954837][ T0] __warn+0x315/0x4a0
[ 1.956536][ T0] ? cp_is_new_root+0x753/0x8a0
[ 1.958595][ T0] ? cp_is_new_root+0x753/0x8a0
[ 1.960664][ T0] __report_bug+0x29a/0x540
[ 1.962600][ T0] ? cp_is_new_root+0x753/0x8a0
[ 1.964698][ T0] ? __pfx___report_bug+0x10/0x10
[ 1.966844][ T0] ? cp_is_new_root+0x753/0x8a0
[ 1.968927][ T0] report_bug+0x16a/0x220
[ 1.970803][ T0] ? cp_is_new_root+0x753/0x8a0
[ 1.972904][ T0] ? cp_is_new_root+0x755/0x8a0
[ 1.974986][ T0] handle_bug+0x98/0x200
[ 1.976821][ T0] exc_invalid_op+0x1a/0x50
[ 1.978740][ T0] asm_exc_invalid_op+0x1a/0x20
[ 1.980822][ T0] RIP: 0010:cp_is_new_root+0x753/0x8a0
[ 1.983167][ T0] Code: 00 74 08 48 89 df e8 6c ca b6 f6 4c 89 33 b0 01 48 83 c4 18 5b 41 5c 41 5d 41 5e 41 5f 5d 2e e9 c3 c4 08 00 e8 be 6d 4f f6 90 <0f> 0b 90 43 80 3c 2f 00 0f 85 0b fd ff ff e9 0e fd ff ff 44 89 f9
[ 1.991759][ T0] RSP: 0000:ffffffff8e007250 EFLAGS: 00010093
[ 1.994387][ T0] RAX: ffffffff8b732c32 RBX: ffffffff8e007e00 RCX: ffffffff8e0953c0
[ 1.997837][ T0] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
[ 2.001312][ T0] RBP: 0000000000000000 R08: ffff888100efd64f R09: 0000000000000000
[ 2.004780][ T0] R10: ffff888100efd618 R11: ffffed10201dfaca R12: ffffffff8e007648
[ 2.008273][ T0] R13: dffffc0000000000 R14: ffffffff8e0075a0 R15: 1ffffffff1c00fc0
[ 2.011747][ T0] ? cp_is_new_root+0x752/0x8a0
[ 2.013856][ T0] mas_wr_store_entry+0x27f9/0x6f10
[ 2.016133][ T0] ? common_startup_64+0x13e/0x147
[ 2.018362][ T0] ? __pfx_mas_wr_store_entry+0x10/0x10
[ 2.020748][ T0] ? common_startup_64+0x13e/0x147
[ 2.022957][ T0] ? stack_trace_save+0xa9/0x100
[ 2.025116][ T0] ? __pfx_stack_trace_save+0x10/0x10
[ 2.027426][ T0] ? __lock_acquire+0x6b5/0x2cf0
[ 2.029567][ T0] ? __update_page_owner_handle+0x5a/0x570
[ 2.032081][ T0] ? __update_page_owner_handle+0x5a/0x570
[ 2.034596][ T0] ? prep_compound_page+0x2f6/0x6d0
[ 2.036847][ T0] ? lock_acquire+0x106/0x330
[ 2.038889][ T0] ? __native_queued_spin_unlock+0xd/0x50
[ 2.041370][ T0] ? do_raw_spin_unlock+0xf6/0x210
[ 2.043593][ T0] ? __lock_acquire+0x6b5/0x2cf0
[ 2.045738][ T0] ? __alloc_frozen_pages_noprof+0x1de/0x380
[ 2.048365][ T0] ? __lock_acquire+0x6b5/0x2cf0
[ 2.050487][ T0] ? local_trylock_acquire+0xb/0x80
[ 2.052757][ T0] ? lock_acquire+0x106/0x330
[ 2.054779][ T0] ? local_trylock_acquire+0xb/0x80
[ 2.057064][ T0] ? local_lock_acquire+0xb/0x70
[ 2.059217][ T0] ? lock_acquire+0x106/0x330
[ 2.061262][ T0] ? local_lock_acquire+0xb/0x70
[ 2.063409][ T0] ? __kmem_cache_alloc_bulk+0x92/0x4d0
[ 2.065834][ T0] ? __kmem_cache_alloc_bulk+0x3c0/0x4d0
[ 2.068312][ T0] ? kmem_cache_prefill_sheaf+0x6d/0x480
[ 2.070778][ T0] ? __kmem_cache_alloc_bulk+0x92/0x4d0
[ 2.073236][ T0] ? kmem_cache_prefill_sheaf+0x2b9/0x480
[ 2.075737][ T0] ? kmem_cache_prefill_sheaf+0x6d/0x480
[ 2.078210][ T0] ? mas_alloc_nodes+0x1f0/0x350
[ 2.080372][ T0] mas_store_gfp+0x6a0/0x850
[ 2.082388][ T0] ? __mutex_unlock_slowpath+0x1bd/0x7d0
[ 2.084852][ T0] ? __pfx_mas_store_gfp+0x10/0x10
[ 2.087118][ T0] ? pcpu_alloc+0x10/0x360
[ 2.089056][ T0] irq_insert_desc+0x10b/0x1a0
[ 2.091169][ T0] ? __pfx_irq_insert_desc+0x10/0x10
[ 2.093489][ T0] ? do_raw_spin_unlock+0xf6/0x210
[ 2.095746][ T0] early_irq_init+0x124/0x170
[ 2.097792][ T0] start_kernel+0x1ab/0x3d0
[ 2.099758][ T0] x86_64_start_reservations+0x24/0x30
[ 2.102138][ T0] x86_64_start_kernel+0x143/0x1c0
[ 2.104378][ T0] common_startup_64+0x13e/0x147
[ 2.106549][ T0]
[ 2.108223][ T0] Rebooting in 86400 seconds..