INFO: task kworker/1:3:7013 blocked for more than 434 seconds. Not tainted 6.12.0-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/1:3 state:D stack:0 pid:7013 tgid:7013 ppid:2 flags:0x00000000 Workqueue: events bpf_prog_free_deferred Call trace: [<819c6d5c>] (__schedule) from [<819c79b4>] (__schedule_loop kernel/sched/core.c:6770 [inline]) [<819c6d5c>] (__schedule) from [<819c79b4>] (schedule+0x2c/0xfc kernel/sched/core.c:6785) r10:8260cabc r9:00000000 r8:82717bc8 r7:00000002 r6:df9f9da4 r5:8446d400 r4:8446d400 [<819c7988>] (schedule) from [<819c7d68>] (schedule_preempt_disabled+0x18/0x24 kernel/sched/core.c:6842) r5:8446d400 r4:82717bc4 [<819c7d50>] (schedule_preempt_disabled) from [<819ca840>] (__mutex_lock_common kernel/locking/mutex.c:684 [inline]) [<819c7d50>] (schedule_preempt_disabled) from [<819ca840>] (__mutex_lock.constprop.0+0x2e8/0xae0 kernel/locking/mutex.c:752) [<819ca558>] (__mutex_lock.constprop.0) from [<819cb10c>] (__mutex_lock_slowpath+0x14/0x18 kernel/locking/mutex.c:1040) r10:8260cabc r9:00000001 r8:00000000 r7:ffffffff r6:00000000 r5:df9f9e20 r4:00000000 [<819cb0f8>] (__mutex_lock_slowpath) from [<819cb14c>] (mutex_lock+0x3c/0x40 kernel/locking/mutex.c:286) [<819cb110>] (mutex_lock) from [<804aeb60>] (_vm_unmap_aliases+0x68/0x240 mm/vmalloc.c:2844) [<804aeaf8>] (_vm_unmap_aliases) from [<804b28bc>] (vm_reset_perms mm/vmalloc.c:3272 [inline]) [<804aeaf8>] (_vm_unmap_aliases) from [<804b28bc>] (vfree+0x170/0x1e4 mm/vmalloc.c:3351) r10:82c18205 r9:00000001 r8:00000000 r7:ffffffff r6:00000000 r5:84b49280 r4:00000000 [<804b274c>] (vfree) from [<805112f4>] (execmem_free+0x30/0x64 mm/execmem.c:69) r9:8446d400 r8:01800000 r7:00000000 r6:82c18200 r5:00001000 r4:7f031000 [<805112c4>] (execmem_free) from [<8039cbb4>] (bpf_jit_free_exec+0x10/0x14 kernel/bpf/core.c:1072) r5:00001000 r4:dfb69000 [<8039cba4>] (bpf_jit_free_exec) from [<8039cf94>] (bpf_jit_binary_free kernel/bpf/core.c:1118 [inline]) [<8039cba4>] (bpf_jit_free_exec) from [<8039cf94>] (bpf_jit_free+0x68/0xe4 kernel/bpf/core.c:1241) [<8039cf2c>] (bpf_jit_free) from [<8039e0e8>] (bpf_prog_free_deferred+0x14c/0x164 kernel/bpf/core.c:2815) r5:84a69754 r4:84a69400 [<8039df9c>] (bpf_prog_free_deferred) from [<80266138>] (process_one_work+0x1b4/0x4f4 kernel/workqueue.c:3229) r7:ddde40c0 r6:82c18200 r5:84a69754 r4:851b2800 [<80265f84>] (process_one_work) from [<80266d1c>] (process_scheduled_works kernel/workqueue.c:3310 [inline]) [<80265f84>] (process_one_work) from [<80266d1c>] (worker_thread+0x1ec/0x3bc kernel/workqueue.c:3391) r10:8446d400 r9:851b282c r8:61c88647 r7:ddde40e0 r6:82604d40 r5:ddde40c0 r4:851b2800 [<80266b30>] (worker_thread) from [<8026fd88>] (kthread+0x104/0x134 kernel/kthread.c:389) r10:00000000 r9:df91de78 r8:853a8600 r7:851b2800 r6:80266b30 r5:8446d400 r4:85108c40 [<8026fc84>] (kthread) from [<80200114>] (ret_from_fork+0x14/0x20 arch/arm/kernel/entry-common.S:137) Exception stack(0xdf9f9fb0 to 0xdf9f9ff8) 9fa0: 00000000 00000000 00000000 00000000 9fc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 9fe0: 00000000 00000000 00000000 00000000 00000013 00000000 r9:00000000 r8:00000000 r7:00000000 r6:00000000 r5:8026fc84 r4:85108c40 NMI backtrace for cpu 0 CPU: 0 UID: 0 PID: 32 Comm: khungtaskd Not tainted 6.12.0-syzkaller #0 Hardware name: ARM-Versatile Express Call trace: [<819a4c38>] (dump_backtrace) from [<819a4d34>] (show_stack+0x18/0x1c arch/arm/kernel/traps.c:257) r7:00000000 r6:00000013 r5:60000093 r4:8203f4b0 [<819a4d1c>] (show_stack) from [<819c2e44>] (__dump_stack lib/dump_stack.c:94 [inline]) [<819a4d1c>] (show_stack) from [<819c2e44>] (dump_stack_lvl+0x70/0x7c lib/dump_stack.c:120) [<819c2dd4>] (dump_stack_lvl) from [<819c2e68>] (dump_stack+0x18/0x1c lib/dump_stack.c:129) r5:00000000 r4:00000001 [<819c2e50>] (dump_stack) from [<81991ef0>] (nmi_cpu_backtrace+0x160/0x17c lib/nmi_backtrace.c:113) [<81991d90>] (nmi_cpu_backtrace) from [<8199203c>] (nmi_trigger_cpumask_backtrace+0x130/0x1d8 lib/nmi_backtrace.c:62) r7:00000000 r6:8260c610 r5:8261af4c r4:ffffffff [<81991f0c>] (nmi_trigger_cpumask_backtrace) from [<80210408>] (arch_trigger_cpumask_backtrace+0x18/0x1c arch/arm/kernel/smp.c:851) r9:00033eca r8:828b7cfc r7:8260c770 r6:00007f23 r5:8261b508 r4:82fb1d1c [<802103f0>] (arch_trigger_cpumask_backtrace) from [<8035887c>] (trigger_all_cpu_backtrace include/linux/nmi.h:162 [inline]) [<802103f0>] (arch_trigger_cpumask_backtrace) from [<8035887c>] (check_hung_uninterruptible_tasks kernel/hung_task.c:223 [inline]) [<802103f0>] (arch_trigger_cpumask_backtrace) from [<8035887c>] (watchdog+0x498/0x5b8 kernel/hung_task.c:379) [<803583e4>] (watchdog) from [<8026fd88>] (kthread+0x104/0x134 kernel/kthread.c:389) r10:00000000 r9:df819e58 r8:82e9f3c0 r7:00000000 r6:803583e4 r5:82ee8c00 r4:82f45a40 [<8026fc84>] (kthread) from [<80200114>] (ret_from_fork+0x14/0x20 arch/arm/kernel/entry-common.S:137) Exception stack(0xdf8e1fb0 to 0xdf8e1ff8) 1fa0: 00000000 00000000 00000000 00000000 1fc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 1fe0: 00000000 00000000 00000000 00000000 00000013 00000000 r9:00000000 r8:00000000 r7:00000000 r6:00000000 r5:8026fc84 r4:82f45a40 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 UID: 0 PID: 9841 Comm: syz.2.1502 Not tainted 6.12.0-syzkaller #0 Hardware name: ARM-Versatile Express PC is at 0x18b8c LR is at 0x18b8c pc : [<00018b8c>] lr : [<00018b8c>] psr: 20000010 sp : 20001490 ip : 20001490 fp : 76bce0bc r10: 003d0f00 r9 : 00006364 r8 : 00000000 r7 : 00000000 r6 : 00000000 r5 : 00000000 r4 : 00000000 r3 : 00000000 r2 : 000001e4 r1 : 00000004 r0 : ffffffff Flags: nzCv IRQs on FIQs on Mode USER_32 ISA ARM Segment none Control: 30c5387d Table: 85097200 DAC: 00000000 Call trace: invalid frame pointer 0x76bce0bc