INFO: task kworker/0:14:14670 blocked for more than 426 seconds.
      Tainted: G             L      syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/0:14    state:D stack:0     pid:14670 tgid:14670 ppid:2      task_flags:0x4208060 flags:0x00000000
Workqueue: events bpf_prog_free_deferred
Call trace: 
[<81b5f2fc>] (__schedule) from [<81b60794>] (__schedule_loop kernel/sched/core.c:7311 [inline])
[<81b5f2fc>] (__schedule) from [<81b60794>] (schedule+0x2c/0xec kernel/sched/core.c:7326)
 r10:dfb31da4 r9:dfb31dac r8:00000002 r7:60000013 r6:82cd7e0c r5:84859880
 r4:84859880
[<81b60768>] (schedule) from [<81b608d8>] (schedule_preempt_disabled+0x18/0x24 kernel/sched/core.c:7383)
 r5:84859880 r4:82cd7e08
[<81b608c0>] (schedule_preempt_disabled) from [<81b63a50>] (__mutex_lock_common kernel/locking/mutex.c:726 [inline])
[<81b608c0>] (schedule_preempt_disabled) from [<81b63a50>] (__mutex_lock.constprop.0+0x50c/0xa48 kernel/locking/mutex.c:821)
[<81b63544>] (__mutex_lock.constprop.0) from [<81b64060>] (__mutex_lock_slowpath+0x14/0x18 kernel/locking/mutex.c:1164)
 r10:82a0b444 r9:00000001 r8:00000000 r7:ffffffff r6:00000000 r5:dfb31e28
 r4:86ffbbc0
[<81b6404c>] (__mutex_lock_slowpath) from [<81b640a0>] (mutex_lock+0x3c/0x40 kernel/locking/mutex.c:319)
[<81b64064>] (mutex_lock) from [<8051e8a0>] (_vm_unmap_aliases+0x5c/0x238 mm/vmalloc.c:2951)
[<8051e844>] (_vm_unmap_aliases) from [<80522630>] (vm_reset_perms mm/vmalloc.c:3382 [inline])
[<8051e844>] (_vm_unmap_aliases) from [<80522630>] (vfree+0x110/0x17c mm/vmalloc.c:3486)
 r10:8302b005 r9:00000001 r8:00000000 r7:ffffffff r6:00000000 r5:00000000
 r4:86ffbbc0
[<80522520>] (vfree) from [<805991e0>] (execmem_free+0x30/0x50 mm/execmem.c:506)
 r9:84859880 r8:00800000 r7:00000000 r6:8302b000 r5:00001000 r4:7f268000
[<805991b0>] (execmem_free) from [<803dc850>] (bpf_jit_free_exec+0x10/0x14 kernel/bpf/core.c:1125)
 r5:00001000 r4:df961000
[<803dc840>] (bpf_jit_free_exec) from [<803dcd40>] (bpf_jit_binary_free kernel/bpf/core.c:1171 [inline])
[<803dc840>] (bpf_jit_free_exec) from [<803dcd40>] (bpf_jit_free+0x64/0xe0 kernel/bpf/core.c:1295)
[<803dccdc>] (bpf_jit_free) from [<803dde18>] (bpf_prog_free_deferred+0x148/0x160 kernel/bpf/core.c:3106)
 r5:877d6798 r4:877d6798
[<803ddcd0>] (bpf_prog_free_deferred) from [<802761e8>] (process_one_work+0x1c8/0x580 kernel/workqueue.c:3322)
 r7:dddd0f00 r6:8302b000 r5:877d6798 r4:86addf80
[<80276020>] (process_one_work) from [<80276e94>] (process_scheduled_works kernel/workqueue.c:3405 [inline])
[<80276020>] (process_one_work) from [<80276e94>] (worker_thread+0x16c/0x318 kernel/workqueue.c:3486)
 r10:00000000 r9:86addfb0 r8:84859880 r7:82a03d80 r6:dddd0f20 r5:dddd0f00
 r4:86addf80
[<80276d28>] (worker_thread) from [<80281710>] (kthread+0x11c/0x154 kernel/kthread.c:436)
 r10:00000000 r9:df841e88 r8:85847f00 r7:86addf80 r6:80276d28 r5:84859880
 r4:86c69d40
[<802815f4>] (kthread) from [<80200114>] (ret_from_fork+0x14/0x20 arch/arm/kernel/entry-common.S:137)
Exception stack(0xdfb31fb0 to 0xdfb31ff8)
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 r5:802815f4 r4:86c69d40
INFO: task kworker/0:14:14670 is blocked on a mutex likely owned by task kworker/0:6:18610.
task:kworker/0:6     state:R  running task     stack:0     pid:18610 tgid:18610 ppid:2      task_flags:0x4208060 flags:0x00000000
Workqueue: events bpf_prog_free_deferred
Call trace: 
[<81b5f2fc>] (__schedule) from [<81b60b84>] (preempt_schedule_irq+0x40/0xa8 kernel/sched/core.c:7556)
 r10:82a0b498 r9:87b3b100 r8:80200c04 r7:dfa01d7c r6:ffffffff r5:87b3b100
 r4:00000000
[<81b60b44>] (preempt_schedule_irq) from [<80200c24>] (svc_preempt+0x8/0x18)
Exception stack(0xdfa01d48 to 0xdfa01d90)
1d40:                   81b35000 ebc37000 00000000 80238790 82cd71a0 82cd7de4
1d60: 7f268000 ebc37000 00000000 00000001 82a0b498 dfa01dbc ebc37000 dfa01d98
1d80: 8022f6d0 802387a8 80000013 ffffffff
 r5:80000013 r4:802387a8
[<8022f670>] (flush_tlb_kernel_range) from [<8051e654>] (__purge_vmap_area_lazy+0x28c/0x47c mm/vmalloc.c:2376)
[<8051e3c8>] (__purge_vmap_area_lazy) from [<8051ea2c>] (_vm_unmap_aliases+0x1e8/0x238 mm/vmalloc.c:2990)
 r10:00000000 r9:dfa01de0 r8:00000000 r7:ffffffff r6:00000008 r5:dfa01e28
 r4:dfa01de0
[<8051e844>] (_vm_unmap_aliases) from [<80522630>] (vm_reset_perms mm/vmalloc.c:3382 [inline])
[<8051e844>] (_vm_unmap_aliases) from [<80522630>] (vfree+0x110/0x17c mm/vmalloc.c:3486)
 r10:8302b005 r9:00000001 r8:00000000 r7:ffffffff r6:00000000 r5:00000000
 r4:87906ec0
[<80522520>] (vfree) from [<805991e0>] (execmem_free+0x30/0x50 mm/execmem.c:506)
 r9:87b3b100 r8:00800000 r7:00000000 r6:8302b000 r5:00001000 r4:7f28a000
[<805991b0>] (execmem_free) from [<803dc850>] (bpf_jit_free_exec+0x10/0x14 kernel/bpf/core.c:1125)
 r5:00001000 r4:dfcbd000
[<803dc840>] (bpf_jit_free_exec) from [<803dcd40>] (bpf_jit_binary_free kernel/bpf/core.c:1171 [inline])
[<803dc840>] (bpf_jit_free_exec) from [<803dcd40>] (bpf_jit_free+0x64/0xe0 kernel/bpf/core.c:1295)