Initmem setup node 0 [mem 0x0000000080000000-0x00000000ffffffff] percpu: Embedded 18 pages/cpu s44168 r8192 d21368 u73728 Built 1 zonelists, mobility grouping on. Total pages: 520868 Kernel command line: root=/dev/vda console=ttyAMA0 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/vda console=ttyAMA0 vmalloc=512M smp.csd_lock_timeout=300000 watchdog_thresh=165 workqueue.watchdog_thresh=420 sysctl.net.core.netdev_unregister_timeout_secs=420 dummy_hcd.num=2 panic_on_warn=1 Unknown kernel command line parameters "earlyprintk=serial page_owner=on", will be passed to user space. Dentry cache hash table entries: 262144 (order: 8, 1048576 bytes, linear) Inode-cache hash table entries: 131072 (order: 7, 524288 bytes, linear) allocated 2097152 bytes of page_ext mem auto-init: stack:off, heap alloc:on, heap free:off software IO TLB: area num 2. software IO TLB: mapped [mem 0x00000000d9a49000-0x00000000dda49000] (64MB) Memory: 1954384K/2097152K available (22528K kernel code, 2354K rwdata, 8344K rodata, 2048K init, 865K bss, 126384K reserved, 16384K cma-reserved, 524288K highmem) SLUB: HWalign=64, Order=0-3, MinObjects=0, CPUs=2, Nodes=1 trace event string verifier disabled rcu: Preemptible hierarchical RCU implementation. rcu: RCU restricting CPUs from NR_CPUS=8 to nr_cpu_ids=2. rcu: RCU callback double-/use-after-free debug is enabled. 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 NR_IRQS: 16, nr_irqs: 16, preallocated irqs: 16 GIC physical location is 0x2c001000 rcu: srcu_init: Setting srcu_struct sizes based on contention. sched_clock: 32 bits at 24MHz, resolution 41ns, wraps every 89478484971ns clocksource: arm,sp804: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 1911260446275 ns arch_timer: cp15 timer(s) running at 62.50MHz (virt). clocksource: arch_sys_counter: mask: 0x1ffffffffffffff max_cycles: 0x1cd42e208c, max_idle_ns: 881590405314 ns sched_clock: 57 bits at 63MHz, resolution 16ns, wraps every 4398046511096ns Switching to timer-based delay loop, resolution 16ns Console: colour dummy device 80x30 Calibrating delay loop (skipped), value calculated using timer frequency.. 125.00 BogoMIPS (lpj=625000) pid_max: default: 32768 minimum: 301 LSM: initializing lsm=lockdown,capability,landlock,yama,safesetid,tomoyo,selinux,bpf,integrity landlock: Up and running. Yama: becoming mindful. TOMOYO Linux initialized SELinux: Initializing. LSM support for eBPF active stackdepot: allocating hash table of 131072 entries via kvcalloc Mount-cache hash table entries: 4096 (order: 2, 16384 bytes, linear) Mountpoint-cache hash table entries: 4096 (order: 2, 16384 bytes, linear) CPU: Testing write buffer coherency: ok CPU0: Spectre BHB: enabling loop workaround for all CPUs CPU1: thread -1, cpu 1, socket 0, mpidr 80000001 Insufficient stack space to handle exception! Task stack: [0xdf85c000..0xdf85e000] IRQ stack: [0xdf804000..0xdf806000] Overflow stack: [0x828ae000..0x828af000] Internal error: kernel stack overflow: 0 [#1] PREEMPT SMP ARM Modules linked in: CPU: 1 PID: 0 Comm: swapper/1 Not tainted 6.3.0-syzkaller #0 Hardware name: ARM-Versatile Express PC is at __dabt_svc+0x14/0x60 arch/arm/kernel/entry-armv.S:210 LR is at call_with_stack+0x1c/0x20 arch/arm/lib/call_with_stack.S:40 pc : [<80200a74>] lr : [<81784394>] psr: 00000193 sp : df804020 ip : df806000 fp : df85df14 r10: 825dfa21 r9 : 828f3980 r8 : 00000000 r7 : df85df4c r6 : ffffffff r5 : 20000113 r4 : 817d05e8 r3 : df000000 r2 : 817cf008 r1 : df85df18 r0 : 8264d250 Flags: nzcv IRQs off FIQs on Mode SVC_32 ISA ARM Segment none Control: 30c5387d Table: 80003000 DAC: 00000000 Register r0 information: non-slab/vmalloc memory Register r1 information: