INFO: task kworker/1:18:5394 blocked for more than 430 seconds.
      Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/1:18    state:D stack:0     pid:5394  tgid:5394  ppid:2      task_flags:0x4208060 flags:0x00000000
Workqueue: events bpf_prog_free_deferred
Call trace: 
[<81ab1a1c>] (__schedule) from [<81ab2cc8>] (__schedule_loop kernel/sched/core.c:6945 [inline])
[<81ab1a1c>] (__schedule) from [<81ab2cc8>] (schedule+0x2c/0x130 kernel/sched/core.c:6960)
 r10:dfa91d84 r9:829174a8 r8:60000113 r7:829174a8 r6:dfa91d8c r5:839aa400
 r4:839aa400
[<81ab2c9c>] (schedule) from [<81ab2e50>] (schedule_preempt_disabled+0x18/0x24 kernel/sched/core.c:7017)
 r5:839aa400 r4:829174a4
[<81ab2e38>] (schedule_preempt_disabled) from [<81ab64d4>] (__mutex_lock_common kernel/locking/mutex.c:692 [inline])
[<81ab2e38>] (schedule_preempt_disabled) from [<81ab64d4>] (__mutex_lock.constprop.0+0x658/0xf8c kernel/locking/mutex.c:776)
[<81ab5e7c>] (__mutex_lock.constprop.0) from [<81ab6edc>] (__mutex_lock_slowpath+0x14/0x18 kernel/locking/mutex.c:1065)
 r10:8280c9a4 r9:00000001 r8:00000000 r7:ffffffff r6:00000000 r5:dfa91e08
 r4:00000000
[<81ab6ec8>] (__mutex_lock_slowpath) from [<81ab6f1c>] (mutex_lock+0x3c/0x40 kernel/locking/mutex.c:290)
[<81ab6ee0>] (mutex_lock) from [<804f4260>] (_vm_unmap_aliases+0x68/0x240 mm/vmalloc.c:2944)
[<804f41f8>] (_vm_unmap_aliases) from [<804f8048>] (vm_reset_perms mm/vmalloc.c:3375 [inline])
[<804f41f8>] (_vm_unmap_aliases) from [<804f8048>] (vfree+0x16c/0x210 mm/vmalloc.c:3454)
 r10:83016170 r9:00000001 r8:00000000 r7:ffffffff r6:00000000 r5:862bab80
 r4:00000000
[<804f7edc>] (vfree) from [<80563e54>] (execmem_free+0x30/0x50 mm/execmem.c:503)
 r9:83018605 r8:839aa400 r7:00000000 r6:83018600 r5:00001000 r4:7f05b000
[<80563e24>] (execmem_free) from [<803cb1cc>] (bpf_jit_free_exec+0x10/0x14 kernel/bpf/core.c:1052)
 r5:00001000 r4:ea863000
[<803cb1bc>] (bpf_jit_free_exec) from [<803cb5ac>] (bpf_jit_binary_free kernel/bpf/core.c:1098 [inline])
[<803cb1bc>] (bpf_jit_free_exec) from [<803cb5ac>] (bpf_jit_free+0x68/0xe4 kernel/bpf/core.c:1221)
[<803cb544>] (bpf_jit_free) from [<803cc6d4>] (bpf_prog_free_deferred+0x140/0x158 kernel/bpf/core.c:2919)
 r5:85b94f8c r4:861ef600
[<803cc594>] (bpf_prog_free_deferred) from [<80275db8>] (process_one_work+0x1b4/0x4f4 kernel/workqueue.c:3257)
 r7:ddde3b40 r6:83018600 r5:85b94f8c r4:861ef600
[<80275c04>] (process_one_work) from [<802764f8>] (process_scheduled_works kernel/workqueue.c:3340 [inline])
[<80275c04>] (process_one_work) from [<802764f8>] (worker_thread+0x1fc/0x3d8 kernel/workqueue.c:3421)
 r10:61c88647 r9:839aa400 r8:861ef62c r7:82804d80 r6:ddde3b40 r5:ddde3b60
 r4:861ef600
[<802762fc>] (worker_thread) from [<8027f6fc>] (kthread+0x12c/0x280 kernel/kthread.c:463)
 r10:00000000 r9:861ef600 r8:802762fc r7:e01c9e60 r6:85aed100 r5:839aa400
 r4:00000001
[<8027f5d0>] (kthread) from [<80200114>] (ret_from_fork+0x14/0x20 arch/arm/kernel/entry-common.S:137)
Exception stack(0xdfa91fb0 to 0xdfa91ff8)
1fa0:                                     00000000 00000000 00000000 00000000
1fc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
1fe0: 00000000 00000000 00000000 00000000 00000013 00000000
 r10:00000000 r9:00000000 r8:00000000 r7:00000000 r6:00000000 r5:8027f5d0
 r4:8610a200
INFO: task kworker/1:18:5394 is blocked on a mutex likely owned by task kworker/0:181:6610.
task:kworker/0:181   state:R  running task     stack:0     pid:6610  tgid:6610  ppid:2      task_flags:0x4208060 flags:0x00000000
Workqueue: events bpf_prog_free_deferred
Call trace: 
[<81ab1a1c>] (__schedule) from [<81ab30fc>] (preempt_schedule_irq+0x40/0xa8 kernel/sched/core.c:7190)
 r10:8280c9f8 r9:8617d400 r8:80200c04 r7:eaa75d54 r6:ffffffff r5:8617d400
 r4:00000000
[<81ab30bc>] (preempt_schedule_irq) from [<80200c24>] (svc_preempt+0x8/0x18)
Exception stack(0xeaa75d20 to 0xeaa75d68)
5d20: b290d000 ebef3000 00000001 80239018 7f047000 00000001 82ace204 82acd5e0
5d40: 7f047000 ebef3000 8280c9f8 eaa75d9c eaa75da0 eaa75d70 8022fe10 80239030
5d60: 80000013 ffffffff
 r5:80000013 r4:80239030
[<8022fdac>] (flush_tlb_kernel_range) from [<804f4024>] (__purge_vmap_area_lazy+0x284/0x458 mm/vmalloc.c:2369)
 r4:82ace224
[<804f3da0>] (__purge_vmap_area_lazy) from [<804f43dc>] (_vm_unmap_aliases+0x1e4/0x240 mm/vmalloc.c:2983)
 r10:00000000 r9:00000000 r8:00000000 r7:ffffffff r6:eaa75dc0 r5:eaa75e08
 r4:eaa75dc0
[<804f41f8>] (_vm_unmap_aliases) from [<804f8048>] (vm_reset_perms mm/vmalloc.c:3375 [inline])
[<804f41f8>] (_vm_unmap_aliases) from [<804f8048>] (vfree+0x16c/0x210 mm/vmalloc.c:3454)
 r10:83016170 r9:00000001 r8:00000000 r7:ffffffff r6:00000000 r5:862c8400
 r4:00000000
[<804f7edc>] (vfree) from [<80563e54>] (execmem_free+0x30/0x50 mm/execmem.c:503)
 r9:83018405 r8:8617d400 r7:00000000 r6:83018400 r5:00001000 r4:7f04b000
[<80563e24>] (execmem_free) from [<803cb1cc>] (bpf_jit_free_exec+0x10/0x14 kernel/bpf/core.c:1052)
 r5:00001000 r4:e0303000
[<803cb1bc>] (bpf_jit_free_exec) from [<803cb5ac>] (bpf_jit_binary_free kernel/bpf/core.c:1098 [inline])
[<803cb1bc>] (bpf_jit_free_exec) from [<803cb5ac>] (bpf_jit_free+0x68/0xe4 kernel/bpf/core.c:1221)
[<803cb544>] (bpf_jit_free) from [<803cc6d4>] (bpf_prog_free_deferred+0x140/0x158 kernel/bpf/core.c:2919)
 r5:8623a38c r4:860cb600
[<803cc594>] (bpf_prog_free_deferred) from [<80275db8>] (process_one_work+0x1b4/0x4f4 kernel/workqueue.c:3257)
 r7:dddcfb40 r6:83018400 r5:8623a38c r4:860cb600
[<80275c04>] (process_one_work) from [<802764f8>] (process_scheduled_works kernel/workqueue.c:3340 [inline])
[<80275c04>] (process_one_work) from [<802764f8>] (worker_thread+0x1fc/0x3d8 kernel/workqueue.c:3421)
 r10:61c88647 r9:8617d400 r8:860cb62c r7:82804d80 r6:dddcfb40 r5:dddcfb60
 r4:860cb600
[<802762fc>] (worker_thread) from [<8027f6fc>] (kthread+0x12c/0x280 kernel/kthread.c:463)
 r10:00000000 r9:860cb600 r8:802762fc r7:eaa45e60 r6:860cb680 r5:8617d400
 r4:00000001
[<8027f5d0>] (kthread) from [<80200114>] (ret_from_fork+0x14/0x20 arch/arm/kernel/entry-common.S:137)
Exception stack(0xeaa75fb0 to 0xeaa75ff8)
5fa0:                                     00000000 00000000 00000000 00000000
5fc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
5fe0: 00000000 00000000 00000000 00000000 00000013 00000000
 r10:00000000 r9:00000000 r8:00000000 r7:00000000 r6:00000000 r5:8027f5d0
 r4:8610ad80
INFO: task kworker/1:19:5395 blocked for more than 430 seconds.
      Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/1:19    state:D stack:0     pid:5395  tgid:5395  ppid:2      task_flags:0x4208060 flags:0x00000000
Workqueue: events bpf_prog_free_deferred
Call trace: 
[<81ab1a1c>] (__schedule) from [<81ab2cc8>] (__schedule_loop kernel/sched/core.c:6945 [inline])
[<81ab1a1c>] (__schedule) from [<81ab2cc8>] (schedule+0x2c/0x130 kernel/sched/core.c:6960)
 r10:dfa9dd84 r9:829174a8 r8:60000113 r7:829174a8 r6:dfa9dd8c r5:833a4800
 r4:833a4800
[<81ab2c9c>] (schedule) from [<81ab2e50>] (schedule_preempt_disabled+0x18/0x24 kernel/sched/core.c:7017)
 r5:833a4800 r4:829174a4
[<81ab2e38>] (schedule_preempt_disabled) from [<81ab64d4>] (__mutex_lock_common kernel/locking/mutex.c:692 [inline])
[<81ab2e38>] (schedule_preempt_disabled) from [<81ab64d4>] (__mutex_lock.constprop.0+0x658/0xf8c kernel/locking/mutex.c:776)
[<81ab5e7c>] (__mutex_lock.constprop.0) from [<81ab6edc>] (__mutex_lock_slowpath+0x14/0x18 kernel/locking/mutex.c:1065)
 r10:8280c9a4 r9:00000001 r8:00000000 r7:ffffffff r6:00000000 r5:dfa9de08
 r4:00000000
[<81ab6ec8>] (__mutex_lock_slowpath) from [<81ab6f1c>] (mutex_lock+0x3c/0x40 kernel/locking/mutex.c:290)
[<81ab6ee0>] (mutex_lock) from [<804f4260>] (_vm_unmap_aliases+0x68/0x240 mm/vmalloc.c:2944)
[<804f41f8>] (_vm_unmap_aliases) from [<804f8048>] (vm_reset_perms mm/vmalloc.c:3375 [inline])
[<804f41f8>] (_vm_unmap_aliases) from [<804f8048>] (vfree+0x16c/0x210 mm/vmalloc.c:3454)
 r10:83016170 r9:00000001 r8:00000000 r7:ffffffff r6:00000000 r5:85f94440
 r4:00000000
[<804f7edc>] (vfree) from [<80563e54>] (execmem_free+0x30/0x50 mm/execmem.c:503)
 r9:83018605 r8:833a4800 r7:00000000 r6:83018600 r5:00001000 r4:7f047000
[<80563e24>] (execmem_free) from [<803cb1cc>] (bpf_jit_free_exec+0x10/0x14 kernel/bpf/core.c:1052)
 r5:00001000 r4:dfd35000
[<803cb1bc>] (bpf_jit_free_exec) from [<803cb5ac>] (bpf_jit_binary_free kernel/bpf/core.c:1098 [inline])
[<803cb1bc>] (bpf_jit_free_exec) from [<803cb5ac>] (bpf_jit_free+0x68/0xe4 kernel/bpf/core.c:1221)
[<803cb544>] (bpf_jit_free) from [<803cc6d4>] (bpf_prog_free_deferred+0x140/0x158 kernel/bpf/core.c:2919)
 r5:862f5b8c r4:861ef800
[<803cc594>] (bpf_prog_free_deferred) from [<80275db8>] (process_one_work+0x1b4/0x4f4 kernel/workqueue.c:3257)
 r7:ddde3b40 r6:83018600 r5:862f5b8c r4:861ef800
[<80275c04>] (process_one_work) from [<802764f8>] (process_scheduled_works kernel/workqueue.c:3340 [inline])
[<80275c04>] (process_one_work) from [<802764f8>] (worker_thread+0x1fc/0x3d8 kernel/workqueue.c:3421)
 r10:61c88647 r9:833a4800 r8:861ef82c r7:82804d80 r6:ddde3b40 r5:ddde3b60
 r4:861ef800
[<802762fc>] (worker_thread) from [<8027f6fc>] (kthread+0x12c/0x280 kernel/kthread.c:463)
 r10:00000000 r9:861ef800 r8:802762fc r7:e01c9e60 r6:85aed780 r5:833a4800
 r4:00000001
[<8027f5d0>] (kthread) from [<80200114>] (ret_from_fork+0x14/0x20 arch/arm/kernel/entry-common.S:137)
Exception stack(0xdfa9dfb0 to 0xdfa9dff8)
dfa0:                                     00000000 00000000 00000000 00000000
dfc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
dfe0: 00000000 00000000 00000000 00000000 00000013 00000000
 r10:00000000 r9:00000000 r8:00000000 r7:00000000 r6:00000000 r5:8027f5d0
 r4:85ae9d80
INFO: task kworker/1:19:5395 is blocked on a mutex likely owned by task kworker/0:181:6610.
task:kworker/0:181   state:R  running task     stack:0     pid:6610  tgid:6610  ppid:2      task_flags:0x4208060 flags:0x00000000
Workqueue: events bpf_prog_free_deferred
Call trace: 
[<81ab1a1c>] (__schedule) from [<81ab30fc>] (preempt_schedule_irq+0x40/0xa8 kernel/sched/core.c:7190)
 r10:8280c9f8 r9:8617d400 r8:80200c04 r7:eaa75d54 r6:ffffffff r5:8617d400
 r4:00000000
[<81ab30bc>] (preempt_schedule_irq) from [<80200c24>] (svc_preempt+0x8/0x18)
Exception stack(0xeaa75d20 to 0xeaa75d68)
5d20: b290d000 ebef3000 00000001 80239018 7f047000 00000001 82ace204 82acd5e0
5d40: 7f047000 ebef3000 8280c9f8 eaa75d9c eaa75da0 eaa75d70 8022fe10 80239030
5d60: 80000013 ffffffff
 r5:80000013 r4:80239030
[<8022fdac>] (flush_tlb_kernel_range) from [<804f4024>] (__purge_vmap_area_lazy+0x284/0x458 mm/vmalloc.c:2369)
 r4:82ace224
[<804f3da0>] (__purge_vmap_area_lazy) from [<804f43dc>] (_vm_unmap_aliases+0x1e4/0x240 mm/vmalloc.c:2983)
 r10:00000000 r9:00000000 r8:00000000 r7:ffffffff r6:eaa75dc0 r5:eaa75e08
 r4:eaa75dc0
[<804f41f8>] (_vm_unmap_aliases) from [<804f8048>] (vm_reset_perms mm/vmalloc.c:3375 [inline])
[<804f41f8>] (_vm_unmap_aliases) from [<804f8048>] (vfree+0x16c/0x210 mm/vmalloc.c:3454)
 r10:83016170 r9:00000001 r8:00000000 r7:ffffffff r6:00000000 r5:862c8400
 r4:00000000
[<804f7edc>] (vfree) from [<80563e54>] (execmem_free+0x30/0x50 mm/execmem.c:503)
 r9:83018405 r8:8617d400 r7:00000000 r6:83018400 r5:00001000 r4:7f04b000
[<80563e24>] (execmem_free) from [<803cb1cc>] (bpf_jit_free_exec+0x10/0x14 kernel/bpf/core.c:1052)
 r5:00001000 r4:e0303000
[<803cb1bc>] (bpf_jit_free_exec) from [<803cb5ac>] (bpf_jit_binary_free kernel/bpf/core.c:1098 [inline])
[<803cb1bc>] (bpf_jit_free_exec) from [<803cb5ac>] (bpf_jit_free+0x68/0xe4 kernel/bpf/core.c:1221)
[<803cb544>] (bpf_jit_free) from [<803cc6d4>] (bpf_prog_free_deferred+0x140/0x158 kernel/bpf/core.c:2919)
 r5:8623a38c r4:860cb600
[<803cc594>] (bpf_prog_free_deferred) from [<80275db8>] (process_one_work+0x1b4/0x4f4 kernel/workqueue.c:3257)
 r7:dddcfb40 r6:83018400 r5:8623a38c r4:860cb600
[<80275c04>] (process_one_work) from [<802764f8>] (process_scheduled_works kernel/workqueue.c:3340 [inline])
[<80275c04>] (process_one_work) from [<802764f8>] (worker_thread+0x1fc/0x3d8 kernel/workqueue.c:3421)
 r10:61c88647 r9:8617d400 r8:860cb62c r7:82804d80 r6:dddcfb40 r5:dddcfb60
 r4:860cb600
[<802762fc>] (worker_thread) from [<8027f6fc>] (kthread+0x12c/0x280 kernel/kthread.c:463)
 r10:00000000 r9:860cb600 r8:802762fc r7:eaa45e60 r6:860cb680 r5:8617d400
 r4:00000001
[<8027f5d0>] (kthread) from [<80200114>] (ret_from_fork+0x14/0x20 arch/arm/kernel/entry-common.S:137)
Exception stack(0xeaa75fb0 to 0xeaa75ff8)
5fa0:                                     00000000 00000000 00000000 00000000
5fc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
5fe0: 00000000 00000000 00000000 00000000 00000013 00000000
 r10:00000000 r9:00000000 r8:00000000 r7:00000000 r6:00000000 r5:8027f5d0
 r4:8610ad80
INFO: task kworker/1:21:5414 blocked for more than 430 seconds.
      Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/1:21    state:D stack:0     pid:5414  tgid:5414  ppid:2      task_flags:0x4208060 flags:0x00000000
Workqueue: events bpf_prog_free_deferred
Call trace: 
[<81ab1a1c>] (__schedule) from [<81ab2cc8>] (__schedule_loop kernel/sched/core.c:6945 [inline])
[<81ab1a1c>] (__schedule) from [<81ab2cc8>] (schedule+0x2c/0x130 kernel/sched/core.c:6960)
 r10:e0345d84 r9:829174a8 r8:60000113 r7:829174a8 r6:e0345d8c r5:839b6000
 r4:839b6000
[<81ab2c9c>] (schedule) from [<81ab2e50>] (schedule_preempt_disabled+0x18/0x24 kernel/sched/core.c:7017)
 r5:839b6000 r4:829174a4
[<81ab2e38>] (schedule_preempt_disabled) from [<81ab64d4>] (__mutex_lock_common kernel/locking/mutex.c:692 [inline])
[<81ab2e38>] (schedule_preempt_disabled) from [<81ab64d4>] (__mutex_lock.constprop.0+0x658/0xf8c kernel/locking/mutex.c:776)
[<81ab5e7c>] (__mutex_lock.constprop.0) from [<81ab6edc>] (__mutex_lock_slowpath+0x14/0x18 kernel/locking/mutex.c:1065)
 r10:8280c9a4 r9:00000001 r8:00000000 r7:ffffffff r6:00000000 r5:e0345e08
 r4:00000000
[<81ab6ec8>] (__mutex_lock_slowpath) from [<81ab6f1c>] (mutex_lock+0x3c/0x40 kernel/locking/mutex.c:290)
[<81ab6ee0>] (mutex_lock) from [<804f4260>] (_vm_unmap_aliases+0x68/0x240 mm/vmalloc.c:2944)
[<804f41f8>] (_vm_unmap_aliases) from [<804f8048>] (vm_reset_perms mm/vmalloc.c:3375 [inline])
[<804f41f8>] (_vm_unmap_aliases) from [<804f8048>] (vfree+0x16c/0x210 mm/vmalloc.c:3454)
 r10:83016170 r9:00000001 r8:00000000 r7:ffffffff r6:00000000 r5:862ba040
 r4:00000000
[<804f7edc>] (vfree) from [<80563e54>] (execmem_free+0x30/0x50 mm/execmem.c:503)
 r9:83018605 r8:839b6000 r7:00000000 r6:83018600 r5:00001000 r4:7f055000
[<80563e24>] (execmem_free) from [<803cb1cc>] (bpf_jit_free_exec+0x10/0x14 kernel/bpf/core.c:1052)
 r5:00001000 r4:e0289000
[<803cb1bc>] (bpf_jit_free_exec) from [<803cb5ac>] (bpf_jit_binary_free kernel/bpf/core.c:1098 [inline])
[<803cb1bc>] (bpf_jit_free_exec) from [<803cb5ac>] (bpf_jit_free+0x68/0xe4 kernel/bpf/core.c:1221)
[<803cb544>] (bpf_jit_free) from [<803cc6d4>] (bpf_prog_free_deferred+0x140/0x158 kernel/bpf/core.c:2919)
 r5:8622978c r4:861efd00
[<803cc594>] (bpf_prog_free_deferred) from [<80275db8>] (process_one_work+0x1b4/0x4f4 kernel/workqueue.c:3257)
 r7:ddde3b40 r6:83018600 r5:8622978c r4:861efd00
[<80275c04>] (process_one_work) from [<802764f8>] (process_scheduled_works kernel/workqueue.c:3340 [inline])
[<80275c04>] (process_one_work) from [<802764f8>] (worker_thread+0x1fc/0x3d8 kernel/workqueue.c:3421)
 r10:61c88647 r9:839b6000 r8:861efd2c r7:82804d80 r6:ddde3b40 r5:ddde3b60
 r4:861efd00
[<802762fc>] (worker_thread) from [<8027f6fc>] (kthread+0x12c/0x280 kernel/kthread.c:463)
 r10:00000000 r9:861efd00 r8:802762fc r7:dfaf5e60 r6:861efd80 r5:839b6000
 r4:00000001
[<8027f5d0>] (kthread) from [<80200114>] (ret_from_fork+0x14/0x20 arch/arm/kernel/entry-common.S:137)
Exception stack(0xe0345fb0 to 0xe0345ff8)
5fa0:                                     00000000 00000000 00000000 00000000
5fc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
5fe0: 00000000 00000000 00000000 00000000 00000013 00000000
 r10:00000000 r9:00000000 r8:00000000 r7:00000000 r6:00000000 r5:8027f5d0
 r4:8610de40
INFO: task kworker/1:21:5414 is blocked on a mutex likely owned by task kworker/0:181:6610.
task:kworker/0:181   state:R  running task     stack:0     pid:6610  tgid:6610  ppid:2      task_flags:0x4208060 flags:0x00000000
Workqueue: events bpf_prog_free_deferred
Call trace: 
[<81ab1a1c>] (__schedule) from [<81ab30fc>] (preempt_schedule_irq+0x40/0xa8 kernel/sched/core.c:7190)
 r10:8280c9f8 r9:8617d400 r8:80200c04 r7:eaa75d54 r6:ffffffff r5:8617d400
 r4:00000000
[<81ab30bc>] (preempt_schedule_irq) from [<80200c24>] (svc_preempt+0x8/0x18)
Exception stack(0xeaa75d20 to 0xeaa75d68)
5d20: b290d000 ebef3000 00000001 80239018 7f047000 00000001 82ace204 82acd5e0
5d40: 7f047000 ebef3000 8280c9f8 eaa75d9c eaa75da0 eaa75d70 8022fe10 80239030
5d60: 80000013 ffffffff
 r5:80000013 r4:80239030
[<8022fdac>] (flush_tlb_kernel_range) from [<804f4024>] (__purge_vmap_area_lazy+0x284/0x458 mm/vmalloc.c:2369)
 r4:82ace224
[<804f3da0>] (__purge_vmap_area_lazy) from [<804f43dc>] (_vm_unmap_aliases+0x1e4/0x240 mm/vmalloc.c:2983)
 r10:00000000 r9:00000000 r8:00000000 r7:ffffffff r6:eaa75dc0 r5:eaa75e08
 r4:eaa75dc0
[<804f41f8>] (_vm_unmap_aliases) from [<804f8048>] (vm_reset_perms mm/vmalloc.c:3375 [inline])
[<804f41f8>] (_vm_unmap_aliases) from [<804f8048>] (vfree+0x16c/0x210 mm/vmalloc.c:3454)
 r10:83016170 r9:00000001 r8:00000000 r7:ffffffff r6:00000000 r5:862c8400
 r4:00000000
[<804f7edc>] (vfree) from [<80563e54>] (execmem_free+0x30/0x50 mm/execmem.c:503)
 r9:83018405 r8:8617d400 r7:00000000 r6:83018400 r5:00001000 r4:7f04b000
[<80563e24>] (execmem_free) from [<803cb1cc>] (bpf_jit_free_exec+0x10/0x14 kernel/bpf/core.c:1052)
 r5:00001000 r4:e0303000
[<803cb1bc>] (bpf_jit_free_exec) from [<803cb5ac>] (bpf_jit_binary_free kernel/bpf/core.c:1098 [inline])
[<803cb1bc>] (bpf_jit_free_exec) from [<803cb5ac>] (bpf_jit_free+0x68/0xe4 kernel/bpf/core.c:1221)
[<803cb544>] (bpf_jit_free) from [<803cc6d4>] (bpf_prog_free_deferred+0x140/0x158 kernel/bpf/core.c:2919)
 r5:8623a38c r4:860cb600
[<803cc594>] (bpf_prog_free_deferred) from [<80275db8>] (process_one_work+0x1b4/0x4f4 kernel/workqueue.c:3257)
 r7:dddcfb40 r6:83018400 r5:8623a38c r4:860cb600
[<80275c04>] (process_one_work) from [<802764f8>] (process_scheduled_works kernel/workqueue.c:3340 [inline])
[<80275c04>] (process_one_work) from [<802764f8>] (worker_thread+0x1fc/0x3d8 kernel/workqueue.c:3421)
 r10:61c88647 r9:8617d400 r8:860cb62c r7:82804d80 r6:dddcfb40 r5:dddcfb60
 r4:860cb600
[<802762fc>] (worker_thread) from [<8027f6fc>] (kthread+0x12c/0x280 kernel/kthread.c:463)
 r10:00000000 r9:860cb600 r8:802762fc r7:eaa45e60 r6:860cb680 r5:8617d400
 r4:00000001
[<8027f5d0>] (kthread) from [<80200114>] (ret_from_fork+0x14/0x20 arch/arm/kernel/entry-common.S:137)
Exception stack(0xeaa75fb0 to 0xeaa75ff8)
5fa0:                                     00000000 00000000 00000000 00000000
5fc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
5fe0: 00000000 00000000 00000000 00000000 00000013 00000000
 r10:00000000 r9:00000000 r8:00000000 r7:00000000 r6:00000000 r5:8027f5d0
 r4:8610ad80
INFO: task kworker/0:182:6611 blocked for more than 430 seconds.
      Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/0:182   state:D stack:0     pid:6611  tgid:6611  ppid:2      task_flags:0x4208060 flags:0x00000000
Workqueue: events bpf_prog_free_deferred
Call trace: 
[<81ab1a1c>] (__schedule) from [<81ab2cc8>] (__schedule_loop kernel/sched/core.c:6945 [inline])
[<81ab1a1c>] (__schedule) from [<81ab2cc8>] (schedule+0x2c/0x130 kernel/sched/core.c:6960)
 r10:ea939d84 r9:829174a8 r8:60000113 r7:829174a8 r6:ea939d8c r5:8617e000
 r4:8617e000
[<81ab2c9c>] (schedule) from [<81ab2e50>] (schedule_preempt_disabled+0x18/0x24 kernel/sched/core.c:7017)
 r5:8617e000 r4:829174a4
[<81ab2e38>] (schedule_preempt_disabled) from [<81ab64d4>] (__mutex_lock_common kernel/locking/mutex.c:692 [inline])
[<81ab2e38>] (schedule_preempt_disabled) from [<81ab64d4>] (__mutex_lock.constprop.0+0x658/0xf8c kernel/locking/mutex.c:776)
[<81ab5e7c>] (__mutex_lock.constprop.0) from [<81ab6edc>] (__mutex_lock_slowpath+0x14/0x18 kernel/locking/mutex.c:1065)
 r10:8280c9a4 r9:00000001 r8:00000000 r7:ffffffff r6:00000000 r5:ea939e08
 r4:00000000
[<81ab6ec8>] (__mutex_lock_slowpath) from [<81ab6f1c>] (mutex_lock+0x3c/0x40 kernel/locking/mutex.c:290)
[<81ab6ee0>] (mutex_lock) from [<804f4260>] (_vm_unmap_aliases+0x68/0x240 mm/vmalloc.c:2944)
[<804f41f8>] (_vm_unmap_aliases) from [<804f8048>] (vm_reset_perms mm/vmalloc.c:3375 [inline])
[<804f41f8>] (_vm_unmap_aliases) from [<804f8048>] (vfree+0x16c/0x210 mm/vmalloc.c:3454)
 r10:83016170 r9:00000001 r8:00000000 r7:ffffffff r6:00000000 r5:862c8140
 r4:00000000
[<804f7edc>] (vfree) from [<80563e54>] (execmem_free+0x30/0x50 mm/execmem.c:503)
 r9:83018405 r8:8617e000 r7:00000000 r6:83018400 r5:00001000 r4:7f051000
[<80563e24>] (execmem_free) from [<803cb1cc>] (bpf_jit_free_exec+0x10/0x14 kernel/bpf/core.c:1052)
 r5:00001000 r4:ea4fd000
[<803cb1bc>] (bpf_jit_free_exec) from [<803cb5ac>] (bpf_jit_binary_free kernel/bpf/core.c:1098 [inline])
[<803cb1bc>] (bpf_jit_free_exec) from [<803cb5ac>] (bpf_jit_free+0x68/0xe4 kernel/bpf/core.c:1221)
[<803cb544>] (bpf_jit_free) from [<803cc6d4>] (bpf_prog_free_deferred+0x140/0x158 kernel/bpf/core.c:2919)
 r5:86270f8c r4:860cb780
[<803cc594>] (bpf_prog_free_deferred) from [<80275db8>] (process_one_work+0x1b4/0x4f4 kernel/workqueue.c:3257)
 r7:dddcfb40 r6:83018400 r5:86270f8c r4:860cb780
[<80275c04>] (process_one_work) from [<802764f8>] (process_scheduled_works kernel/workqueue.c:3340 [inline])
[<80275c04>] (process_one_work) from [<802764f8>] (worker_thread+0x1fc/0x3d8 kernel/workqueue.c:3421)
 r10:61c88647 r9:8617e000 r8:860cb7ac r7:82804d80 r6:dddcfb40 r5:dddcfb60
 r4:860cb780
[<802762fc>] (worker_thread) from [<8027f6fc>] (kthread+0x12c/0x280 kernel/kthread.c:463)
 r10:00000000 r9:860cb780 r8:802762fc r7:eaa75e60 r6:860cb800 r5:8617e000
 r4:00000001
[<8027f5d0>] (kthread) from [<80200114>] (ret_from_fork+0x14/0x20 arch/arm/kernel/entry-common.S:137)
Exception stack(0xea939fb0 to 0xea939ff8)
9fa0:                                     00000000 00000000 00000000 00000000
9fc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
9fe0: 00000000 00000000 00000000 00000000 00000013 00000000
 r10:00000000 r9:00000000 r8:00000000 r7:00000000 r6:00000000 r5:8027f5d0
 r4:8610ad80
INFO: task kworker/0:182:6611 is blocked on a mutex likely owned by task kworker/0:181:6610.
task:kworker/0:181   state:R  running task     stack:0     pid:6610  tgid:6610  ppid:2      task_flags:0x4208060 flags:0x00000000
Workqueue: events bpf_prog_free_deferred
Call trace: 
[<81ab1a1c>] (__schedule) from [<81ab30fc>] (preempt_schedule_irq+0x40/0xa8 kernel/sched/core.c:7190)
 r10:8280c9f8 r9:8617d400 r8:80200c04 r7:eaa75d54 r6:ffffffff r5:8617d400
 r4:00000000
[<81ab30bc>] (preempt_schedule_irq) from [<80200c24>] (svc_preempt+0x8/0x18)
Exception stack(0xeaa75d20 to 0xeaa75d68)
5d20: b290d000 ebef3000 00000001 80239018 7f047000 00000001 82ace204 82acd5e0
5d40: 7f047000 ebef3000 8280c9f8 eaa75d9c eaa75da0 eaa75d70 8022fe10 80239030
5d60: 80000013 ffffffff
 r5:80000013 r4:80239030
[<8022fdac>] (flush_tlb_kernel_range) from [<804f4024>] (__purge_vmap_area_lazy+0x284/0x458 mm/vmalloc.c:2369)
 r4:82ace224
[<804f3da0>] (__purge_vmap_area_lazy) from [<804f43dc>] (_vm_unmap_aliases+0x1e4/0x240 mm/vmalloc.c:2983)
 r10:00000000 r9:00000000 r8:00000000 r7:ffffffff r6:eaa75dc0 r5:eaa75e08
 r4:eaa75dc0
[<804f41f8>] (_vm_unmap_aliases) from [<804f8048>] (vm_reset_perms mm/vmalloc.c:3375 [inline])
[<804f41f8>] (_vm_unmap_aliases) from [<804f8048>] (vfree+0x16c/0x210 mm/vmalloc.c:3454)
 r10:83016170 r9:00000001 r8:00000000 r7:ffffffff r6:00000000 r5:862c8400
 r4:00000000
[<804f7edc>] (vfree) from [<80563e54>] (execmem_free+0x30/0x50 mm/execmem.c:503)
 r9:83018405 r8:8617d400 r7:00000000 r6:83018400 r5:00001000 r4:7f04b000
[<80563e24>] (execmem_free) from [<803cb1cc>] (bpf_jit_free_exec+0x10/0x14 kernel/bpf/core.c:1052)
 r5:00001000 r4:e0303000
[<803cb1bc>] (bpf_jit_free_exec) from [<803cb5ac>] (bpf_jit_binary_free kernel/bpf/core.c:1098 [inline])
[<803cb1bc>] (bpf_jit_free_exec) from [<803cb5ac>] (bpf_jit_free+0x68/0xe4 kernel/bpf/core.c:1221)
[<803cb544>] (bpf_jit_free) from [<803cc6d4>] (bpf_prog_free_deferred+0x140/0x158 kernel/bpf/core.c:2919)
 r5:8623a38c r4:860cb600
[<803cc594>] (bpf_prog_free_deferred) from [<80275db8>] (process_one_work+0x1b4/0x4f4 kernel/workqueue.c:3257)
 r7:dddcfb40 r6:83018400 r5:8623a38c r4:860cb600
[<80275c04>] (process_one_work) from [<802764f8>] (process_scheduled_works kernel/workqueue.c:3340 [inline])
[<80275c04>] (process_one_work) from [<802764f8>] (worker_thread+0x1fc/0x3d8 kernel/workqueue.c:3421)
 r10:61c88647 r9:8617d400 r8:860cb62c r7:82804d80 r6:dddcfb40 r5:dddcfb60
 r4:860cb600
[<802762fc>] (worker_thread) from [<8027f6fc>] (kthread+0x12c/0x280 kernel/kthread.c:463)
 r10:00000000 r9:860cb600 r8:802762fc r7:eaa45e60 r6:860cb680 r5:8617d400
 r4:00000001
[<8027f5d0>] (kthread) from [<80200114>] (ret_from_fork+0x14/0x20 arch/arm/kernel/entry-common.S:137)
Exception stack(0xeaa75fb0 to 0xeaa75ff8)
5fa0:                                     00000000 00000000 00000000 00000000
5fc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
5fe0: 00000000 00000000 00000000 00000000 00000013 00000000
 r10:00000000 r9:00000000 r8:00000000 r7:00000000 r6:00000000 r5:8027f5d0
 r4:8610ad80
INFO: task kworker/1:246:6676 blocked for more than 430 seconds.
      Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/1:246   state:D stack:0     pid:6676  tgid:6676  ppid:2      task_flags:0x4208060 flags:0x00000000
Workqueue: events bpf_prog_free_deferred
Call trace: 
[<81ab1a1c>] (__schedule) from [<81ab2cc8>] (__schedule_loop kernel/sched/core.c:6945 [inline])
[<81ab1a1c>] (__schedule) from [<81ab2cc8>] (schedule+0x2c/0x130 kernel/sched/core.c:6960)
 r10:eaac1d84 r9:829174a8 r8:60000113 r7:829174a8 r6:eaac1d8c r5:8629c800
 r4:8629c800
[<81ab2c9c>] (schedule) from [<81ab2e50>] (schedule_preempt_disabled+0x18/0x24 kernel/sched/core.c:7017)
 r5:8629c800 r4:829174a4
[<81ab2e38>] (schedule_preempt_disabled) from [<81ab64d4>] (__mutex_lock_common kernel/locking/mutex.c:692 [inline])
[<81ab2e38>] (schedule_preempt_disabled) from [<81ab64d4>] (__mutex_lock.constprop.0+0x658/0xf8c kernel/locking/mutex.c:776)
[<81ab5e7c>] (__mutex_lock.constprop.0) from [<81ab6edc>] (__mutex_lock_slowpath+0x14/0x18 kernel/locking/mutex.c:1065)
 r10:8280c9a4 r9:00000001 r8:00000000 r7:ffffffff r6:00000000 r5:eaac1e08
 r4:00000000
[<81ab6ec8>] (__mutex_lock_slowpath) from [<81ab6f1c>] (mutex_lock+0x3c/0x40 kernel/locking/mutex.c:290)
[<81ab6ee0>] (mutex_lock) from [<804f4260>] (_vm_unmap_aliases+0x68/0x240 mm/vmalloc.c:2944)
[<804f41f8>] (_vm_unmap_aliases) from [<804f8048>] (vm_reset_perms mm/vmalloc.c:3375 [inline])
[<804f41f8>] (_vm_unmap_aliases) from [<804f8048>] (vfree+0x16c/0x210 mm/vmalloc.c:3454)
 r10:83016170 r9:00000001 r8:00000000 r7:ffffffff r6:00000000 r5:862c8bc0
 r4:00000000
[<804f7edc>] (vfree) from [<80563e54>] (execmem_free+0x30/0x50 mm/execmem.c:503)
 r9:83018605 r8:8629c800 r7:00000000 r6:83018600 r5:00001000 r4:7f059000
[<80563e24>] (execmem_free) from [<803cb1cc>] (bpf_jit_free_exec+0x10/0x14 kernel/bpf/core.c:1052)
 r5:00001000 r4:ea82f000
[<803cb1bc>] (bpf_jit_free_exec) from [<803cb5ac>] (bpf_jit_binary_free kernel/bpf/core.c:1098 [inline])
[<803cb1bc>] (bpf_jit_free_exec) from [<803cb5ac>] (bpf_jit_free+0x68/0xe4 kernel/bpf/core.c:1221)
[<803cb544>] (bpf_jit_free) from [<803cc6d4>] (bpf_prog_free_deferred+0x140/0x158 kernel/bpf/core.c:2919)
 r5:8623af8c r4:862c7080
[<803cc594>] (bpf_prog_free_deferred) from [<80275db8>] (process_one_work+0x1b4/0x4f4 kernel/workqueue.c:3257)
 r7:ddde3b40 r6:83018600 r5:8623af8c r4:862c7080
[<80275c04>] (process_one_work) from [<802764f8>] (process_scheduled_works kernel/workqueue.c:3340 [inline])
[<80275c04>] (process_one_work) from [<802764f8>] (worker_thread+0x1fc/0x3d8 kernel/workqueue.c:3421)
 r10:61c88647 r9:8629c800 r8:862c70ac r7:82804d80 r6:ddde3b40 r5:ddde3b60
 r4:862c7080
[<802762fc>] (worker_thread) from [<8027f6fc>] (kthread+0x12c/0x280 kernel/kthread.c:463)
 r10:00000000 r9:862c7080 r8:802762fc r7:eaa29e60 r6:862c7200 r5:8629c800
 r4:00000001
[<8027f5d0>] (kthread) from [<80200114>] (ret_from_fork+0x14/0x20 arch/arm/kernel/entry-common.S:137)
Exception stack(0xeaac1fb0 to 0xeaac1ff8)
1fa0:                                     00000000 00000000 00000000 00000000
1fc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
1fe0: 00000000 00000000 00000000 00000000 00000013 00000000
 r10:00000000 r9:00000000 r8:00000000 r7:00000000 r6:00000000 r5:8027f5d0
 r4:85f82d80
INFO: task kworker/1:246:6676 is blocked on a mutex likely owned by task kworker/0:181:6610.
task:kworker/0:181   state:R  running task     stack:0     pid:6610  tgid:6610  ppid:2      task_flags:0x4208060 flags:0x00000000
Workqueue: events bpf_prog_free_deferred
Call trace: 
[<81ab1a1c>] (__schedule) from [<81ab30fc>] (preempt_schedule_irq+0x40/0xa8 kernel/sched/core.c:7190)
 r10:8280c9f8 r9:8617d400 r8:80200c04 r7:eaa75d54 r6:ffffffff r5:8617d400
 r4:00000000
[<81ab30bc>] (preempt_schedule_irq) from [<80200c24>] (svc_preempt+0x8/0x18)
Exception stack(0xeaa75d20 to 0xeaa75d68)
5d20: b290d000 ebef3000 00000001 80239018 7f047000 00000001 82ace204 82acd5e0
5d40: 7f047000 ebef3000 8280c9f8 eaa75d9c eaa75da0 eaa75d70 8022fe10 80239030
5d60: 80000013 ffffffff
 r5:80000013 r4:80239030
[<8022fdac>] (flush_tlb_kernel_range) from [<804f4024>] (__purge_vmap_area_lazy+0x284/0x458 mm/vmalloc.c:2369)
 r4:82ace224
[<804f3da0>] (__purge_vmap_area_lazy) from [<804f43dc>] (_vm_unmap_aliases+0x1e4/0x240 mm/vmalloc.c:2983)
 r10:00000000 r9:00000000 r8:00000000 r7:ffffffff r6:eaa75dc0 r5:eaa75e08
 r4:eaa75dc0
[<804f41f8>] (_vm_unmap_aliases) from [<804f8048>] (vm_reset_perms mm/vmalloc.c:3375 [inline])
[<804f41f8>] (_vm_unmap_aliases) from [<804f8048>] (vfree+0x16c/0x210 mm/vmalloc.c:3454)
 r10:83016170 r9:00000001 r8:00000000 r7:ffffffff r6:00000000 r5:862c8400
 r4:00000000
[<804f7edc>] (vfree) from [<80563e54>] (execmem_free+0x30/0x50 mm/execmem.c:503)
 r9:83018405 r8:8617d400 r7:00000000 r6:83018400 r5:00001000 r4:7f04b000
[<80563e24>] (execmem_free) from [<803cb1cc>] (bpf_jit_free_exec+0x10/0x14 kernel/bpf/core.c:1052)
 r5:00001000 r4:e0303000
[<803cb1bc>] (bpf_jit_free_exec) from [<803cb5ac>] (bpf_jit_binary_free kernel/bpf/core.c:1098 [inline])
[<803cb1bc>] (bpf_jit_free_exec) from [<803cb5ac>] (bpf_jit_free+0x68/0xe4 kernel/bpf/core.c:1221)
[<803cb544>] (bpf_jit_free) from [<803cc6d4>] (bpf_prog_free_deferred+0x140/0x158 kernel/bpf/core.c:2919)
 r5:8623a38c r4:860cb600
[<803cc594>] (bpf_prog_free_deferred) from [<80275db8>] (process_one_work+0x1b4/0x4f4 kernel/workqueue.c:3257)
 r7:dddcfb40 r6:83018400 r5:8623a38c r4:860cb600
[<80275c04>] (process_one_work) from [<802764f8>] (process_scheduled_works kernel/workqueue.c:3340 [inline])
[<80275c04>] (process_one_work) from [<802764f8>] (worker_thread+0x1fc/0x3d8 kernel/workqueue.c:3421)
 r10:61c88647 r9:8617d400 r8:860cb62c r7:82804d80 r6:dddcfb40 r5:dddcfb60
 r4:860cb600
[<802762fc>] (worker_thread) from [<8027f6fc>] (kthread+0x12c/0x280 kernel/kthread.c:463)
 r10:00000000 r9:860cb600 r8:802762fc r7:eaa45e60 r6:860cb680 r5:8617d400
 r4:00000001
[<8027f5d0>] (kthread) from [<80200114>] (ret_from_fork+0x14/0x20 arch/arm/kernel/entry-common.S:137)
Exception stack(0xeaa75fb0 to 0xeaa75ff8)
5fa0:                                     00000000 00000000 00000000 00000000
5fc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
5fe0: 00000000 00000000 00000000 00000000 00000013 00000000
 r10:00000000 r9:00000000 r8:00000000 r7:00000000 r6:00000000 r5:8027f5d0
 r4:8610ad80
INFO: task kworker/1:248:6683 blocked for more than 430 seconds.
      Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/1:248   state:D stack:0     pid:6683  tgid:6683  ppid:2      task_flags:0x4208060 flags:0x00000000
Workqueue: events bpf_prog_free_deferred
Call trace: 
[<81ab1a1c>] (__schedule) from [<81ab2cc8>] (__schedule_loop kernel/sched/core.c:6945 [inline])
[<81ab1a1c>] (__schedule) from [<81ab2cc8>] (schedule+0x2c/0x130 kernel/sched/core.c:6960)
 r10:eab19d84 r9:829174a8 r8:60000113 r7:829174a8 r6:eab19d8c r5:8629a400
 r4:8629a400
[<81ab2c9c>] (schedule) from [<81ab2e50>] (schedule_preempt_disabled+0x18/0x24 kernel/sched/core.c:7017)
 r5:8629a400 r4:829174a4
[<81ab2e38>] (schedule_preempt_disabled) from [<81ab64d4>] (__mutex_lock_common kernel/locking/mutex.c:692 [inline])
[<81ab2e38>] (schedule_preempt_disabled) from [<81ab64d4>] (__mutex_lock.constprop.0+0x658/0xf8c kernel/locking/mutex.c:776)
[<81ab5e7c>] (__mutex_lock.constprop.0) from [<81ab6edc>] (__mutex_lock_slowpath+0x14/0x18 kernel/locking/mutex.c:1065)
 r10:8280c9a4 r9:00000001 r8:00000000 r7:ffffffff r6:00000000 r5:eab19e08
 r4:00000000
[<81ab6ec8>] (__mutex_lock_slowpath) from [<81ab6f1c>] (mutex_lock+0x3c/0x40 kernel/locking/mutex.c:290)
[<81ab6ee0>] (mutex_lock) from [<804f4260>] (_vm_unmap_aliases+0x68/0x240 mm/vmalloc.c:2944)
[<804f41f8>] (_vm_unmap_aliases) from [<804f8048>] (vm_reset_perms mm/vmalloc.c:3375 [inline])
[<804f41f8>] (_vm_unmap_aliases) from [<804f8048>] (vfree+0x16c/0x210 mm/vmalloc.c:3454)
 r10:83016170 r9:00000001 r8:00000000 r7:ffffffff r6:00000000 r5:862bd780
 r4:00000000
[<804f7edc>] (vfree) from [<80563e54>] (execmem_free+0x30/0x50 mm/execmem.c:503)
 r9:83018605 r8:8629a400 r7:00000000 r6:83018600 r5:00001000 r4:7f083000
[<80563e24>] (execmem_free) from [<803cb1cc>] (bpf_jit_free_exec+0x10/0x14 kernel/bpf/core.c:1052)
 r5:00001000 r4:eab13000
[<803cb1bc>] (bpf_jit_free_exec) from [<803cb5ac>] (bpf_jit_binary_free kernel/bpf/core.c:1098 [inline])
[<803cb1bc>] (bpf_jit_free_exec) from [<803cb5ac>] (bpf_jit_free+0x68/0xe4 kernel/bpf/core.c:1221)
[<803cb544>] (bpf_jit_free) from [<803cc6d4>] (bpf_prog_free_deferred+0x140/0x158 kernel/bpf/core.c:2919)
 r5:862f438c r4:862c7380
[<803cc594>] (bpf_prog_free_deferred) from [<80275db8>] (process_one_work+0x1b4/0x4f4 kernel/workqueue.c:3257)
 r7:ddde3b40 r6:83018600 r5:862f438c r4:862c7380
[<80275c04>] (process_one_work) from [<802764f8>] (process_scheduled_works kernel/workqueue.c:3340 [inline])
[<80275c04>] (process_one_work) from [<802764f8>] (worker_thread+0x1fc/0x3d8 kernel/workqueue.c:3421)
 r10:61c88647 r9:8629a400 r8:862c73ac r7:82804d80 r6:ddde3b40 r5:ddde3b60
 r4:862c7380
[<802762fc>] (worker_thread) from [<8027f6fc>] (kthread+0x12c/0x280 kernel/kthread.c:463)
 r10:00000000 r9:862c7380 r8:802762fc r7:eaac5e60 r6:862c7580 r5:8629a400
 r4:00000001
[<8027f5d0>] (kthread) from [<80200114>] (ret_from_fork+0x14/0x20 arch/arm/kernel/entry-common.S:137)
Exception stack(0xeab19fb0 to 0xeab19ff8)
9fa0:                                     00000000 00000000 00000000 00000000
9fc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
9fe0: 00000000 00000000 00000000 00000000 00000013 00000000
 r10:00000000 r9:00000000 r8:00000000 r7:00000000 r6:00000000 r5:8027f5d0
 r4:85f8ba80
INFO: task kworker/1:248:6683 is blocked on a mutex likely owned by task kworker/0:181:6610.
task:kworker/0:181   state:R  running task     stack:0     pid:6610  tgid:6610  ppid:2      task_flags:0x4208060 flags:0x00000000
Workqueue: events bpf_prog_free_deferred
Call trace: 
[<81ab1a1c>] (__schedule) from [<81ab30fc>] (preempt_schedule_irq+0x40/0xa8 kernel/sched/core.c:7190)
 r10:8280c9f8 r9:8617d400 r8:80200c04 r7:eaa75d54 r6:ffffffff r5:8617d400
 r4:00000000
[<81ab30bc>] (preempt_schedule_irq) from [<80200c24>] (svc_preempt+0x8/0x18)
Exception stack(0xeaa75d20 to 0xeaa75d68)
5d20: b290d000 ebef3000 00000001 80239018 7f047000 00000001 82ace204 82acd5e0
5d40: 7f047000 ebef3000 8280c9f8 eaa75d9c eaa75da0 eaa75d70 8022fe10 80239030
5d60: 80000013 ffffffff
 r5:80000013 r4:80239030
[<8022fdac>] (flush_tlb_kernel_range) from [<804f4024>] (__purge_vmap_area_lazy+0x284/0x458 mm/vmalloc.c:2369)
 r4:82ace224
[<804f3da0>] (__purge_vmap_area_lazy) from [<804f43dc>] (_vm_unmap_aliases+0x1e4/0x240 mm/vmalloc.c:2983)
 r10:00000000 r9:00000000 r8:00000000 r7:ffffffff r6:eaa75dc0 r5:eaa75e08
 r4:eaa75dc0
[<804f41f8>] (_vm_unmap_aliases) from [<804f8048>] (vm_reset_perms mm/vmalloc.c:3375 [inline])
[<804f41f8>] (_vm_unmap_aliases) from [<804f8048>] (vfree+0x16c/0x210 mm/vmalloc.c:3454)
 r10:83016170 r9:00000001 r8:00000000 r7:ffffffff r6:00000000 r5:862c8400
 r4:00000000
[<804f7edc>] (vfree) from [<80563e54>] (execmem_free+0x30/0x50 mm/execmem.c:503)
 r9:83018405 r8:8617d400 r7:00000000 r6:83018400 r5:00001000 r4:7f04b000
[<80563e24>] (execmem_free) from [<803cb1cc>] (bpf_jit_free_exec+0x10/0x14 kernel/bpf/core.c:1052)
 r5:00001000 r4:e0303000
[<803cb1bc>] (bpf_jit_free_exec) from [<803cb5ac>] (bpf_jit_binary_free kernel/bpf/core.c:1098 [inline])
[<803cb1bc>] (bpf_jit_free_exec) from [<803cb5ac>] (bpf_jit_free+0x68/0xe4 kernel/bpf/core.c:1221)
[<803cb544>] (bpf_jit_free) from [<803cc6d4>] (bpf_prog_free_deferred+0x140/0x158 kernel/bpf/core.c:2919)
 r5:8623a38c r4:860cb600
[<803cc594>] (bpf_prog_free_deferred) from [<80275db8>] (process_one_work+0x1b4/0x4f4 kernel/workqueue.c:3257)
 r7:dddcfb40 r6:83018400 r5:8623a38c r4:860cb600
[<80275c04>] (process_one_work) from [<802764f8>] (process_scheduled_works kernel/workqueue.c:3340 [inline])
[<80275c04>] (process_one_work) from [<802764f8>] (worker_thread+0x1fc/0x3d8 kernel/workqueue.c:3421)
 r10:61c88647 r9:8617d400 r8:860cb62c r7:82804d80 r6:dddcfb40 r5:dddcfb60
 r4:860cb600
[<802762fc>] (worker_thread) from [<8027f6fc>] (kthread+0x12c/0x280 kernel/kthread.c:463)
 r10:00000000 r9:860cb600 r8:802762fc r7:eaa45e60 r6:860cb680 r5:8617d400
 r4:00000001
[<8027f5d0>] (kthread) from [<80200114>] (ret_from_fork+0x14/0x20 arch/arm/kernel/entry-common.S:137)
Exception stack(0xeaa75fb0 to 0xeaa75ff8)
5fa0:                                     00000000 00000000 00000000 00000000
5fc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
5fe0: 00000000 00000000 00000000 00000000 00000013 00000000
 r10:00000000 r9:00000000 r8:00000000 r7:00000000 r6:00000000 r5:8027f5d0
 r4:8610ad80
INFO: task kworker/1:249:6688 blocked for more than 430 seconds.
      Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/1:249   state:D stack:0     pid:6688  tgid:6688  ppid:2      task_flags:0x4208060 flags:0x00000000
Workqueue: events bpf_prog_free_deferred
Call trace: 
[<81ab1a1c>] (__schedule) from [<81ab2cc8>] (__schedule_loop kernel/sched/core.c:6945 [inline])
[<81ab1a1c>] (__schedule) from [<81ab2cc8>] (schedule+0x2c/0x130 kernel/sched/core.c:6960)
 r10:eaac9d84 r9:829174a8 r8:60000113 r7:829174a8 r6:eaac9d8c r5:8629d400
 r4:8629d400
[<81ab2c9c>] (schedule) from [<81ab2e50>] (schedule_preempt_disabled+0x18/0x24 kernel/sched/core.c:7017)
 r5:8629d400 r4:829174a4
[<81ab2e38>] (schedule_preempt_disabled) from [<81ab64d4>] (__mutex_lock_common kernel/locking/mutex.c:692 [inline])
[<81ab2e38>] (schedule_preempt_disabled) from [<81ab64d4>] (__mutex_lock.constprop.0+0x658/0xf8c kernel/locking/mutex.c:776)
[<81ab5e7c>] (__mutex_lock.constprop.0) from [<81ab6edc>] (__mutex_lock_slowpath+0x14/0x18 kernel/locking/mutex.c:1065)
 r10:8280c9a4 r9:00000001 r8:00000000 r7:ffffffff r6:00000000 r5:eaac9e08
 r4:00000000
[<81ab6ec8>] (__mutex_lock_slowpath) from [<81ab6f1c>] (mutex_lock+0x3c/0x40 kernel/locking/mutex.c:290)
[<81ab6ee0>] (mutex_lock) from [<804f4260>] (_vm_unmap_aliases+0x68/0x240 mm/vmalloc.c:2944)
[<804f41f8>] (_vm_unmap_aliases) from [<804f8048>] (vm_reset_perms mm/vmalloc.c:3375 [inline])
[<804f41f8>] (_vm_unmap_aliases) from [<804f8048>] (vfree+0x16c/0x210 mm/vmalloc.c:3454)
 r10:83016170 r9:00000001 r8:00000000 r7:ffffffff r6:00000000 r5:85f94e40
 r4:00000000
[<804f7edc>] (vfree) from [<80563e54>] (execmem_free+0x30/0x50 mm/execmem.c:503)
 r9:83018605 r8:8629d400 r7:00000000 r6:83018600 r5:00001000 r4:7f057000
[<80563e24>] (execmem_free) from [<803cb1cc>] (bpf_jit_free_exec+0x10/0x14 kernel/bpf/core.c:1052)
 r5:00001000 r4:e0291000
[<803cb1bc>] (bpf_jit_free_exec) from [<803cb5ac>] (bpf_jit_binary_free kernel/bpf/core.c:1098 [inline])
[<803cb1bc>] (bpf_jit_free_exec) from [<803cb5ac>] (bpf_jit_free+0x68/0xe4 kernel/bpf/core.c:1221)
[<803cb544>] (bpf_jit_free) from [<803cc6d4>] (bpf_prog_free_deferred+0x140/0x158 kernel/bpf/core.c:2919)
 r5:8623978c r4:862c7680
[<803cc594>] (bpf_prog_free_deferred) from [<80275db8>] (process_one_work+0x1b4/0x4f4 kernel/workqueue.c:3257)
 r7:ddde3b40 r6:83018600 r5:8623978c r4:862c7680
[<80275c04>] (process_one_work) from [<802764f8>] (process_scheduled_works kernel/workqueue.c:3340 [inline])
[<80275c04>] (process_one_work) from [<802764f8>] (worker_thread+0x1fc/0x3d8 kernel/workqueue.c:3421)
 r10:61c88647 r9:8629d400 r8:862c76ac r7:82804d80 r6:ddde3b40 r5:ddde3b60
 r4:862c7680
[<802762fc>] (worker_thread) from [<8027f6fc>] (kthread+0x12c/0x280 kernel/kthread.c:463)
 r10:00000000 r9:862c7680 r8:802762fc r7:eaac1e60 r6:862c7700 r5:8629d400
 r4:00000001
[<8027f5d0>] (kthread) from [<80200114>] (ret_from_fork+0x14/0x20 arch/arm/kernel/entry-common.S:137)
Exception stack(0xeaac9fb0 to 0xeaac9ff8)
9fa0:                                     00000000 00000000 00000000 00000000
9fc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
9fe0: 00000000 00000000 00000000 00000000 00000013 00000000
 r10:00000000 r9:00000000 r8:00000000 r7:00000000 r6:00000000 r5:8027f5d0
 r4:862d01c0
INFO: task kworker/1:249:6688 is blocked on a mutex likely owned by task kworker/0:181:6610.
task:kworker/0:181   state:R  running task     stack:0     pid:6610  tgid:6610  ppid:2      task_flags:0x4208060 flags:0x00000000
Workqueue: events bpf_prog_free_deferred
Call trace: 
[<81ab1a1c>] (__schedule) from [<81ab30fc>] (preempt_schedule_irq+0x40/0xa8 kernel/sched/core.c:7190)
 r10:8280c9f8 r9:8617d400 r8:80200c04 r7:eaa75d54 r6:ffffffff r5:8617d400
 r4:00000000
[<81ab30bc>] (preempt_schedule_irq) from [<80200c24>] (svc_preempt+0x8/0x18)
Exception stack(0xeaa75d20 to 0xeaa75d68)
5d20: b290d000 ebef3000 00000001 80239018 7f047000 00000001 82ace204 82acd5e0
5d40: 7f047000 ebef3000 8280c9f8 eaa75d9c eaa75da0 eaa75d70 8022fe10 80239030
5d60: 80000013 ffffffff
 r5:80000013 r4:80239030
[<8022fdac>] (flush_tlb_kernel_range) from [<804f4024>] (__purge_vmap_area_lazy+0x284/0x458 mm/vmalloc.c:2369)
 r4:82ace224
[<804f3da0>] (__purge_vmap_area_lazy) from [<804f43dc>] (_vm_unmap_aliases+0x1e4/0x240 mm/vmalloc.c:2983)
 r10:00000000 r9:00000000 r8:00000000 r7:ffffffff r6:eaa75dc0 r5:eaa75e08
 r4:eaa75dc0
[<804f41f8>] (_vm_unmap_aliases) from [<804f8048>] (vm_reset_perms mm/vmalloc.c:3375 [inline])
[<804f41f8>] (_vm_unmap_aliases) from [<804f8048>] (vfree+0x16c/0x210 mm/vmalloc.c:3454)
 r10:83016170 r9:00000001 r8:00000000 r7:ffffffff r6:00000000 r5:862c8400
 r4:00000000
[<804f7edc>] (vfree) from [<80563e54>] (execmem_free+0x30/0x50 mm/execmem.c:503)
 r9:83018405 r8:8617d400 r7:00000000 r6:83018400 r5:00001000 r4:7f04b000
[<80563e24>] (execmem_free) from [<803cb1cc>] (bpf_jit_free_exec+0x10/0x14 kernel/bpf/core.c:1052)
 r5:00001000 r4:e0303000
[<803cb1bc>] (bpf_jit_free_exec) from [<803cb5ac>] (bpf_jit_binary_free kernel/bpf/core.c:1098 [inline])
[<803cb1bc>] (bpf_jit_free_exec) from [<803cb5ac>] (bpf_jit_free+0x68/0xe4 kernel/bpf/core.c:1221)
[<803cb544>] (bpf_jit_free) from [<803cc6d4>] (bpf_prog_free_deferred+0x140/0x158 kernel/bpf/core.c:2919)
 r5:8623a38c r4:860cb600
[<803cc594>] (bpf_prog_free_deferred) from [<80275db8>] (process_one_work+0x1b4/0x4f4 kernel/workqueue.c:3257)
 r7:dddcfb40 r6:83018400 r5:8623a38c r4:860cb600
[<80275c04>] (process_one_work) from [<802764f8>] (process_scheduled_works kernel/workqueue.c:3340 [inline])
[<80275c04>] (process_one_work) from [<802764f8>] (worker_thread+0x1fc/0x3d8 kernel/workqueue.c:3421)
 r10:61c88647 r9:8617d400 r8:860cb62c r7:82804d80 r6:dddcfb40 r5:dddcfb60
 r4:860cb600
[<802762fc>] (worker_thread) from [<8027f6fc>] (kthread+0x12c/0x280 kernel/kthread.c:463)
 r10:00000000 r9:860cb600 r8:802762fc r7:eaa45e60 r6:860cb680 r5:8617d400
 r4:00000001
[<8027f5d0>] (kthread) from [<80200114>] (ret_from_fork+0x14/0x20 arch/arm/kernel/entry-common.S:137)
Exception stack(0xeaa75fb0 to 0xeaa75ff8)
5fa0:                                     00000000 00000000 00000000 00000000
5fc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
5fe0: 00000000 00000000 00000000 00000000 00000013 00000000
 r10:00000000 r9:00000000 r8:00000000 r7:00000000 r6:00000000 r5:8027f5d0
 r4:8610ad80
INFO: task kworker/0:184:6696 blocked for more than 430 seconds.
      Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/0:184   state:D stack:0     pid:6696  tgid:6696  ppid:2      task_flags:0x4208060 flags:0x00000000
Workqueue: events bpf_prog_free_deferred
Call trace: 
[<81ab1a1c>] (__schedule) from [<81ab2cc8>] (__schedule_loop kernel/sched/core.c:6945 [inline])
[<81ab1a1c>] (__schedule) from [<81ab2cc8>] (schedule+0x2c/0x130 kernel/sched/core.c:6960)
 r10:eaae9d84 r9:829174a8 r8:60000113 r7:829174a8 r6:eaae9d8c r5:8613ec00
 r4:8613ec00
[<81ab2c9c>] (schedule) from [<81ab2e50>] (schedule_preempt_disabled+0x18/0x24 kernel/sched/core.c:7017)
 r5:8613ec00 r4:829174a4
[<81ab2e38>] (schedule_preempt_disabled) from [<81ab64d4>] (__mutex_lock_common kernel/locking/mutex.c:692 [inline])
[<81ab2e38>] (schedule_preempt_disabled) from [<81ab64d4>] (__mutex_lock.constprop.0+0x658/0xf8c kernel/locking/mutex.c:776)
[<81ab5e7c>] (__mutex_lock.constprop.0) from [<81ab6edc>] (__mutex_lock_slowpath+0x14/0x18 kernel/locking/mutex.c:1065)
 r10:8280c9a4 r9:00000001 r8:00000000 r7:ffffffff r6:00000000 r5:eaae9e08
 r4:00000000
[<81ab6ec8>] (__mutex_lock_slowpath) from [<81ab6f1c>] (mutex_lock+0x3c/0x40 kernel/locking/mutex.c:290)
[<81ab6ee0>] (mutex_lock) from [<804f4260>] (_vm_unmap_aliases+0x68/0x240 mm/vmalloc.c:2944)
[<804f41f8>] (_vm_unmap_aliases) from [<804f8048>] (vm_reset_perms mm/vmalloc.c:3375 [inline])
[<804f41f8>] (_vm_unmap_aliases) from [<804f8048>] (vfree+0x16c/0x210 mm/vmalloc.c:3454)
 r10:83016170 r9:00000001 r8:00000000 r7:ffffffff r6:00000000 r5:862c8080
 r4:00000000
[<804f7edc>] (vfree) from [<80563e54>] (execmem_free+0x30/0x50 mm/execmem.c:503)
 r9:83018405 r8:8613ec00 r7:00000000 r6:83018400 r5:00001000 r4:7f04f000
[<80563e24>] (execmem_free) from [<803cb1cc>] (bpf_jit_free_exec+0x10/0x14 kernel/bpf/core.c:1052)
 r5:00001000 r4:dfae9000
[<803cb1bc>] (bpf_jit_free_exec) from [<803cb5ac>] (bpf_jit_binary_free kernel/bpf/core.c:1098 [inline])
[<803cb1bc>] (bpf_jit_free_exec) from [<803cb5ac>] (bpf_jit_free+0x68/0xe4 kernel/bpf/core.c:1221)
[<803cb544>] (bpf_jit_free) from [<803cc6d4>] (bpf_prog_free_deferred+0x140/0x158 kernel/bpf/core.c:2919)
 r5:8623bb8c r4:862c0480
[<803cc594>] (bpf_prog_free_deferred) from [<80275db8>] (process_one_work+0x1b4/0x4f4 kernel/workqueue.c:3257)
 r7:dddcfb40 r6:83018400 r5:8623bb8c r4:862c0480
[<80275c04>] (process_one_work) from [<802764f8>] (process_scheduled_works kernel/workqueue.c:3340 [inline])
[<80275c04>] (process_one_work) from [<802764f8>] (worker_thread+0x1fc/0x3d8 kernel/workqueue.c:3421)
 r10:61c88647 r9:8613ec00 r8:862c04ac r7:82804d80 r6:dddcfb40 r5:dddcfb60
 r4:862c0480
[<802762fc>] (worker_thread) from [<8027f6fc>] (kthread+0x12c/0x280 kernel/kthread.c:463)
 r10:00000000 r9:862c0480 r8:802762fc r7:ea939e60 r6:862c0500 r5:8613ec00
 r4:00000001
[<8027f5d0>] (kthread) from [<80200114>] (ret_from_fork+0x14/0x20 arch/arm/kernel/entry-common.S:137)
Exception stack(0xeaae9fb0 to 0xeaae9ff8)
9fa0:                                     00000000 00000000 00000000 00000000
9fc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
9fe0: 00000000 00000000 00000000 00000000 00000013 00000000
 r10:00000000 r9:00000000 r8:00000000 r7:00000000 r6:00000000 r5:8027f5d0
 r4:862c80c0
INFO: task kworker/0:184:6696 is blocked on a mutex likely owned by task kworker/0:181:6610.
task:kworker/0:181   state:R  running task     stack:0     pid:6610  tgid:6610  ppid:2      task_flags:0x4208060 flags:0x00000000
Workqueue: events bpf_prog_free_deferred
Call trace: 
[<81ab1a1c>] (__schedule) from [<81ab30fc>] (preempt_schedule_irq+0x40/0xa8 kernel/sched/core.c:7190)
 r10:8280c9f8 r9:8617d400 r8:80200c04 r7:eaa75d54 r6:ffffffff r5:8617d400
 r4:00000000
[<81ab30bc>] (preempt_schedule_irq) from [<80200c24>] (svc_preempt+0x8/0x18)
Exception stack(0xeaa75d20 to 0xeaa75d68)
5d20: b290d000 ebef3000 00000001 80239018 7f047000 00000001 82ace204 82acd5e0
5d40: 7f047000 ebef3000 8280c9f8 eaa75d9c eaa75da0 eaa75d70 8022fe10 80239030
5d60: 80000013 ffffffff
 r5:80000013 r4:80239030
[<8022fdac>] (flush_tlb_kernel_range) from [<804f4024>] (__purge_vmap_area_lazy+0x284/0x458 mm/vmalloc.c:2369)
 r4:82ace224
[<804f3da0>] (__purge_vmap_area_lazy) from [<804f43dc>] (_vm_unmap_aliases+0x1e4/0x240 mm/vmalloc.c:2983)
 r10:00000000 r9:00000000 r8:00000000 r7:ffffffff r6:eaa75dc0 r5:eaa75e08
 r4:eaa75dc0
[<804f41f8>] (_vm_unmap_aliases) from [<804f8048>] (vm_reset_perms mm/vmalloc.c:3375 [inline])
[<804f41f8>] (_vm_unmap_aliases) from [<804f8048>] (vfree+0x16c/0x210 mm/vmalloc.c:3454)
 r10:83016170 r9:00000001 r8:00000000 r7:ffffffff r6:00000000 r5:862c8400
 r4:00000000
[<804f7edc>] (vfree) from [<80563e54>] (execmem_free+0x30/0x50 mm/execmem.c:503)
 r9:83018405 r8:8617d400 r7:00000000 r6:83018400 r5:00001000 r4:7f04b000
[<80563e24>] (execmem_free) from [<803cb1cc>] (bpf_jit_free_exec+0x10/0x14 kernel/bpf/core.c:1052)
 r5:00001000 r4:e0303000
[<803cb1bc>] (bpf_jit_free_exec) from [<803cb5ac>] (bpf_jit_binary_free kernel/bpf/core.c:1098 [inline])
[<803cb1bc>] (bpf_jit_free_exec) from [<803cb5ac>] (bpf_jit_free+0x68/0xe4 kernel/bpf/core.c:1221)
[<803cb544>] (bpf_jit_free) from [<803cc6d4>] (bpf_prog_free_deferred+0x140/0x158 kernel/bpf/core.c:2919)
 r5:8623a38c r4:860cb600
[<803cc594>] (bpf_prog_free_deferred) from [<80275db8>] (process_one_work+0x1b4/0x4f4 kernel/workqueue.c:3257)
 r7:dddcfb40 r6:83018400 r5:8623a38c r4:860cb600
[<80275c04>] (process_one_work) from [<802764f8>] (process_scheduled_works kernel/workqueue.c:3340 [inline])
[<80275c04>] (process_one_work) from [<802764f8>] (worker_thread+0x1fc/0x3d8 kernel/workqueue.c:3421)
 r10:61c88647 r9:8617d400 r8:860cb62c r7:82804d80 r6:dddcfb40 r5:dddcfb60
 r4:860cb600
[<802762fc>] (worker_thread) from [<8027f6fc>] (kthread+0x12c/0x280 kernel/kthread.c:463)
 r10:00000000 r9:860cb600 r8:802762fc r7:eaa45e60 r6:860cb680 r5:8617d400
 r4:00000001
[<8027f5d0>] (kthread) from [<80200114>] (ret_from_fork+0x14/0x20 arch/arm/kernel/entry-common.S:137)
Exception stack(0xeaa75fb0 to 0xeaa75ff8)
5fa0:                                     00000000 00000000 00000000 00000000
5fc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
5fe0: 00000000 00000000 00000000 00000000 00000013 00000000
 r10:00000000 r9:00000000 r8:00000000 r7:00000000 r6:00000000 r5:8027f5d0
 r4:8610ad80
INFO: task kworker/0:185:6698 blocked for more than 430 seconds.
      Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/0:185   state:D stack:0     pid:6698  tgid:6698  ppid:2      task_flags:0x4208060 flags:0x00000000
Workqueue: events bpf_prog_free_deferred
Call trace: 
[<81ab1a1c>] (__schedule) from [<81ab2cc8>] (__schedule_loop kernel/sched/core.c:6945 [inline])
[<81ab1a1c>] (__schedule) from [<81ab2cc8>] (schedule+0x2c/0x130 kernel/sched/core.c:6960)
 r10:eaaedd84 r9:829174a8 r8:60000013 r7:829174a8 r6:eaaedd8c r5:8613e000
 r4:8613e000
[<81ab2c9c>] (schedule) from [<81ab2e50>] (schedule_preempt_disabled+0x18/0x24 kernel/sched/core.c:7017)
 r5:8613e000 r4:829174a4
[<81ab2e38>] (schedule_preempt_disabled) from [<81ab64d4>] (__mutex_lock_common kernel/locking/mutex.c:692 [inline])
[<81ab2e38>] (schedule_preempt_disabled) from [<81ab64d4>] (__mutex_lock.constprop.0+0x658/0xf8c kernel/locking/mutex.c:776)
[<81ab5e7c>] (__mutex_lock.constprop.0) from [<81ab6edc>] (__mutex_lock_slowpath+0x14/0x18 kernel/locking/mutex.c:1065)
 r10:8280c9a4 r9:00000001 r8:00000000 r7:ffffffff r6:00000000 r5:eaaede08
 r4:00000000
[<81ab6ec8>] (__mutex_lock_slowpath) from [<81ab6f1c>] (mutex_lock+0x3c/0x40 kernel/locking/mutex.c:290)
[<81ab6ee0>] (mutex_lock) from [<804f4260>] (_vm_unmap_aliases+0x68/0x240 mm/vmalloc.c:2944)
[<804f41f8>] (_vm_unmap_aliases) from [<804f8048>] (vm_reset_perms mm/vmalloc.c:3375 [inline])
[<804f41f8>] (_vm_unmap_aliases) from [<804f8048>] (vfree+0x16c/0x210 mm/vmalloc.c:3454)
 r10:83016170 r9:00000001 r8:00000000 r7:ffffffff r6:00000000 r5:862c8a80
 r4:00000000
[<804f7edc>] (vfree) from [<80563e54>] (execmem_free+0x30/0x50 mm/execmem.c:503)
 r9:83018405 r8:8613e000 r7:00000000 r6:83018400 r5:00001000 r4:7f053000
[<80563e24>] (execmem_free) from [<803cb1cc>] (bpf_jit_free_exec+0x10/0x14 kernel/bpf/core.c:1052)
 r5:00001000 r4:ea741000
[<803cb1bc>] (bpf_jit_free_exec) from [<803cb5ac>] (bpf_jit_binary_free kernel/bpf/core.c:1098 [inline])
[<803cb1bc>] (bpf_jit_free_exec) from [<803cb5ac>] (bpf_jit_free+0x68/0xe4 kernel/bpf/core.c:1221)
[<803cb544>] (bpf_jit_free) from [<803cc6d4>] (bpf_prog_free_deferred+0x140/0x158 kernel/bpf/core.c:2919)
 r5:8623a78c r4:862c0600
[<803cc594>] (bpf_prog_free_deferred) from [<80275db8>] (process_one_work+0x1b4/0x4f4 kernel/workqueue.c:3257)
 r7:dddcfb40 r6:83018400 r5:8623a78c r4:862c0600
[<80275c04>] (process_one_work) from [<802764f8>] (process_scheduled_works kernel/workqueue.c:3340 [inline])
[<80275c04>] (process_one_work) from [<802764f8>] (worker_thread+0x1fc/0x3d8 kernel/workqueue.c:3421)
 r10:61c88647 r9:8613e000 r8:862c062c r7:82804d80 r6:dddcfb40 r5:dddcfb60
 r4:862c0600
[<802762fc>] (worker_thread) from [<8027f6fc>] (kthread+0x12c/0x280 kernel/kthread.c:463)
 r10:00000000 r9:862c0600 r8:802762fc r7:eaae9e60 r6:862c0680 r5:8613e000
 r4:00000001
[<8027f5d0>] (kthread) from [<80200114>] (ret_from_fork+0x14/0x20 arch/arm/kernel/entry-common.S:137)
Exception stack(0xeaaedfb0 to 0xeaaedff8)
dfa0:                                     00000000 00000000 00000000 00000000
dfc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
dfe0: 00000000 00000000 00000000 00000000 00000013 00000000
 r10:00000000 r9:00000000 r8:00000000 r7:00000000 r6:00000000 r5:8027f5d0
 r4:862c85c0
INFO: task kworker/0:185:6698 is blocked on a mutex likely owned by task kworker/0:181:6610.
task:kworker/0:181   state:R  running task     stack:0     pid:6610  tgid:6610  ppid:2      task_flags:0x4208060 flags:0x00000000
Workqueue: events bpf_prog_free_deferred
Call trace: 
[<81ab1a1c>] (__schedule) from [<81ab30fc>] (preempt_schedule_irq+0x40/0xa8 kernel/sched/core.c:7190)
 r10:8280c9f8 r9:8617d400 r8:80200c04 r7:eaa75d54 r6:ffffffff r5:8617d400
 r4:00000000
[<81ab30bc>] (preempt_schedule_irq) from [<80200c24>] (svc_preempt+0x8/0x18)
Exception stack(0xeaa75d20 to 0xeaa75d68)
5d20: b290d000 ebef3000 00000001 80239018 7f047000 00000001 82ace204 82acd5e0
5d40: 7f047000 ebef3000 8280c9f8 eaa75d9c eaa75da0 eaa75d70 8022fe10 80239030
5d60: 80000013 ffffffff
 r5:80000013 r4:80239030
[<8022fdac>] (flush_tlb_kernel_range) from [<804f4024>] (__purge_vmap_area_lazy+0x284/0x458 mm/vmalloc.c:2369)
 r4:82ace224
[<804f3da0>] (__purge_vmap_area_lazy) from [<804f43dc>] (_vm_unmap_aliases+0x1e4/0x240 mm/vmalloc.c:2983)
 r10:00000000 r9:00000000 r8:00000000 r7:ffffffff r6:eaa75dc0 r5:eaa75e08
 r4:eaa75dc0
[<804f41f8>] (_vm_unmap_aliases) from [<804f8048>] (vm_reset_perms mm/vmalloc.c:3375 [inline])
[<804f41f8>] (_vm_unmap_aliases) from [<804f8048>] (vfree+0x16c/0x210 mm/vmalloc.c:3454)
 r10:83016170 r9:00000001 r8:00000000 r7:ffffffff r6:00000000 r5:862c8400
 r4:00000000
[<804f7edc>] (vfree) from [<80563e54>] (execmem_free+0x30/0x50 mm/execmem.c:503)
 r9:83018405 r8:8617d400 r7:00000000 r6:83018400 r5:00001000 r4:7f04b000
[<80563e24>] (execmem_free) from [<803cb1cc>] (bpf_jit_free_exec+0x10/0x14 kernel/bpf/core.c:1052)
 r5:00001000 r4:e0303000
[<803cb1bc>] (bpf_jit_free_exec) from [<803cb5ac>] (bpf_jit_binary_free kernel/bpf/core.c:1098 [inline])
[<803cb1bc>] (bpf_jit_free_exec) from [<803cb5ac>] (bpf_jit_free+0x68/0xe4 kernel/bpf/core.c:1221)
[<803cb544>] (bpf_jit_free) from [<803cc6d4>] (bpf_prog_free_deferred+0x140/0x158 kernel/bpf/core.c:2919)
 r5:8623a38c r4:860cb600
[<803cc594>] (bpf_prog_free_deferred) from [<80275db8>] (process_one_work+0x1b4/0x4f4 kernel/workqueue.c:3257)
 r7:dddcfb40 r6:83018400 r5:8623a38c r4:860cb600
[<80275c04>] (process_one_work) from [<802764f8>] (process_scheduled_works kernel/workqueue.c:3340 [inline])
[<80275c04>] (process_one_work) from [<802764f8>] (worker_thread+0x1fc/0x3d8 kernel/workqueue.c:3421)
 r10:61c88647 r9:8617d400 r8:860cb62c r7:82804d80 r6:dddcfb40 r5:dddcfb60
 r4:860cb600
[<802762fc>] (worker_thread) from [<8027f6fc>] (kthread+0x12c/0x280 kernel/kthread.c:463)
 r10:00000000 r9:860cb600 r8:802762fc r7:eaa45e60 r6:860cb680 r5:8617d400
 r4:00000001
[<8027f5d0>] (kthread) from [<80200114>] (ret_from_fork+0x14/0x20 arch/arm/kernel/entry-common.S:137)
Exception stack(0xeaa75fb0 to 0xeaa75ff8)
5fa0:                                     00000000 00000000 00000000 00000000
5fc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
5fe0: 00000000 00000000 00000000 00000000 00000013 00000000
 r10:00000000 r9:00000000 r8:00000000 r7:00000000 r6:00000000 r5:8027f5d0
 r4:8610ad80
INFO: task kworker/0:186:6700 blocked for more than 430 seconds.
      Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/0:186   state:D stack:0     pid:6700  tgid:6700  ppid:2      task_flags:0x4208060 flags:0x00000000
Workqueue: events bpf_prog_free_deferred
Call trace: 
[<81ab1a1c>] (__schedule) from [<81ab2cc8>] (__schedule_loop kernel/sched/core.c:6945 [inline])
[<81ab1a1c>] (__schedule) from [<81ab2cc8>] (schedule+0x2c/0x130 kernel/sched/core.c:6960)
 r10:eab1dd84 r9:829174a8 r8:60000013 r7:829174a8 r6:eab1dd8c r5:8613bc00
 r4:8613bc00
[<81ab2c9c>] (schedule) from [<81ab2e50>] (schedule_preempt_disabled+0x18/0x24 kernel/sched/core.c:7017)
 r5:8613bc00 r4:829174a4
[<81ab2e38>] (schedule_preempt_disabled) from [<81ab64d4>] (__mutex_lock_common kernel/locking/mutex.c:692 [inline])
[<81ab2e38>] (schedule_preempt_disabled) from [<81ab64d4>] (__mutex_lock.constprop.0+0x658/0xf8c kernel/locking/mutex.c:776)
[<81ab5e7c>] (__mutex_lock.constprop.0) from [<81ab6edc>] (__mutex_lock_slowpath+0x14/0x18 kernel/locking/mutex.c:1065)
 r10:8280c9a4 r9:00000001 r8:00000000 r7:ffffffff r6:00000000 r5:eab1de08
 r4:00000000
[<81ab6ec8>] (__mutex_lock_slowpath) from [<81ab6f1c>] (mutex_lock+0x3c/0x40 kernel/locking/mutex.c:290)
[<81ab6ee0>] (mutex_lock) from [<804f4260>] (_vm_unmap_aliases+0x68/0x240 mm/vmalloc.c:2944)
[<804f41f8>] (_vm_unmap_aliases) from [<804f8048>] (vm_reset_perms mm/vmalloc.c:3375 [inline])
[<804f41f8>] (_vm_unmap_aliases) from [<804f8048>] (vfree+0x16c/0x210 mm/vmalloc.c:3454)
 r10:83016170 r9:00000001 r8:00000000 r7:ffffffff r6:00000000 r5:862d0dc0
 r4:00000000
[<804f7edc>] (vfree) from [<80563e54>] (execmem_free+0x30/0x50 mm/execmem.c:503)
 r9:83018405 r8:8613bc00 r7:00000000 r6:83018400 r5:00001000 r4:7f04d000
[<80563e24>] (execmem_free) from [<803cb1cc>] (bpf_jit_free_exec+0x10/0x14 kernel/bpf/core.c:1052)
 r5:00001000 r4:df9b3000
[<803cb1bc>] (bpf_jit_free_exec) from [<803cb5ac>] (bpf_jit_binary_free kernel/bpf/core.c:1098 [inline])
[<803cb1bc>] (bpf_jit_free_exec) from [<803cb5ac>] (bpf_jit_free+0x68/0xe4 kernel/bpf/core.c:1221)
[<803cb544>] (bpf_jit_free) from [<803cc6d4>] (bpf_prog_free_deferred+0x140/0x158 kernel/bpf/core.c:2919)
 r5:86266b8c r4:862c0800
[<803cc594>] (bpf_prog_free_deferred) from [<80275db8>] (process_one_work+0x1b4/0x4f4 kernel/workqueue.c:3257)
 r7:dddcfb40 r6:83018400 r5:86266b8c r4:862c0800
[<80275c04>] (process_one_work) from [<802764f8>] (process_scheduled_works kernel/workqueue.c:3340 [inline])
[<80275c04>] (process_one_work) from [<802764f8>] (worker_thread+0x1fc/0x3d8 kernel/workqueue.c:3421)
 r10:61c88647 r9:8613bc00 r8:862c082c r7:82804d80 r6:dddcfb40 r5:dddcfb60
 r4:862c0800
[<802762fc>] (worker_thread) from [<8027f6fc>] (kthread+0x12c/0x280 kernel/kthread.c:463)
 r10:00000000 r9:862c0800 r8:802762fc r7:eaae9e60 r6:862c0880 r5:8613bc00
 r4:00000001
[<8027f5d0>] (kthread) from [<80200114>] (ret_from_fork+0x14/0x20 arch/arm/kernel/entry-common.S:137)
Exception stack(0xeab1dfb0 to 0xeab1dff8)
dfa0:                                     00000000 00000000 00000000 00000000
dfc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
dfe0: 00000000 00000000 00000000 00000000 00000013 00000000
 r10:00000000 r9:00000000 r8:00000000 r7:00000000 r6:00000000 r5:8027f5d0
 r4:862c8780
INFO: task kworker/0:186:6700 is blocked on a mutex likely owned by task kworker/0:181:6610.
task:kworker/0:181   state:R  running task     stack:0     pid:6610  tgid:6610  ppid:2      task_flags:0x4208060 flags:0x00000000
Workqueue: events bpf_prog_free_deferred
Call trace: 
[<81ab1a1c>] (__schedule) from [<81ab30fc>] (preempt_schedule_irq+0x40/0xa8 kernel/sched/core.c:7190)
 r10:8280c9f8 r9:8617d400 r8:80200c04 r7:eaa75d54 r6:ffffffff r5:8617d400
 r4:00000000
[<81ab30bc>] (preempt_schedule_irq) from [<80200c24>] (svc_preempt+0x8/0x18)
Exception stack(0xeaa75d20 to 0xeaa75d68)
5d20: b290d000 ebef3000 00000001 80239018 7f047000 00000001 82ace204 82acd5e0
5d40: 7f047000 ebef3000 8280c9f8 eaa75d9c eaa75da0 eaa75d70 8022fe10 80239030
5d60: 80000013 ffffffff
 r5:80000013 r4:80239030
[<8022fdac>] (flush_tlb_kernel_range) from [<804f4024>] (__purge_vmap_area_lazy+0x284/0x458 mm/vmalloc.c:2369)
 r4:82ace224
[<804f3da0>] (__purge_vmap_area_lazy) from [<804f43dc>] (_vm_unmap_aliases+0x1e4/0x240 mm/vmalloc.c:2983)
 r10:00000000 r9:00000000 r8:00000000 r7:ffffffff r6:eaa75dc0 r5:eaa75e08
 r4:eaa75dc0
[<804f41f8>] (_vm_unmap_aliases) from [<804f8048>] (vm_reset_perms mm/vmalloc.c:3375 [inline])
[<804f41f8>] (_vm_unmap_aliases) from [<804f8048>] (vfree+0x16c/0x210 mm/vmalloc.c:3454)
 r10:83016170 r9:00000001 r8:00000000 r7:ffffffff r6:00000000 r5:862c8400
 r4:00000000
[<804f7edc>] (vfree) from [<80563e54>] (execmem_free+0x30/0x50 mm/execmem.c:503)
 r9:83018405 r8:8617d400 r7:00000000 r6:83018400 r5:00001000 r4:7f04b000
[<80563e24>] (execmem_free) from [<803cb1cc>] (bpf_jit_free_exec+0x10/0x14 kernel/bpf/core.c:1052)
 r5:00001000 r4:e0303000
[<803cb1bc>] (bpf_jit_free_exec) from [<803cb5ac>] (bpf_jit_binary_free kernel/bpf/core.c:1098 [inline])
[<803cb1bc>] (bpf_jit_free_exec) from [<803cb5ac>] (bpf_jit_free+0x68/0xe4 kernel/bpf/core.c:1221)
[<803cb544>] (bpf_jit_free) from [<803cc6d4>] (bpf_prog_free_deferred+0x140/0x158 kernel/bpf/core.c:2919)
 r5:8623a38c r4:860cb600
[<803cc594>] (bpf_prog_free_deferred) from [<80275db8>] (process_one_work+0x1b4/0x4f4 kernel/workqueue.c:3257)
 r7:dddcfb40 r6:83018400 r5:8623a38c r4:860cb600
[<80275c04>] (process_one_work) from [<802764f8>] (process_scheduled_works kernel/workqueue.c:3340 [inline])
[<80275c04>] (process_one_work) from [<802764f8>] (worker_thread+0x1fc/0x3d8 kernel/workqueue.c:3421)
 r10:61c88647 r9:8617d400 r8:860cb62c r7:82804d80 r6:dddcfb40 r5:dddcfb60
 r4:860cb600
[<802762fc>] (worker_thread) from [<8027f6fc>] (kthread+0x12c/0x280 kernel/kthread.c:463)
 r10:00000000 r9:860cb600 r8:802762fc r7:eaa45e60 r6:860cb680 r5:8617d400
 r4:00000001
[<8027f5d0>] (kthread) from [<80200114>] (ret_from_fork+0x14/0x20 arch/arm/kernel/entry-common.S:137)
Exception stack(0xeaa75fb0 to 0xeaa75ff8)
5fa0:                                     00000000 00000000 00000000 00000000
5fc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
5fe0: 00000000 00000000 00000000 00000000 00000013 00000000
 r10:00000000 r9:00000000 r8:00000000 r7:00000000 r6:00000000 r5:8027f5d0
 r4:8610ad80
Future hung task reports are suppressed, see sysctl kernel.hung_task_warnings
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 30 Comm: khungtaskd Not tainted syzkaller #0 PREEMPT 
Hardware name: ARM-Versatile Express
Call trace: 
[<80201a74>] (dump_backtrace) from [<80201b70>] (show_stack+0x18/0x1c arch/arm/kernel/traps.c:257)
 r7:00000000 r6:00000013 r5:60000093 r4:8229579c
[<80201b58>] (show_stack) from [<8021edec>] (__dump_stack lib/dump_stack.c:94 [inline])
[<80201b58>] (show_stack) from [<8021edec>] (dump_stack_lvl+0x70/0x7c lib/dump_stack.c:120)
[<8021ed7c>] (dump_stack_lvl) from [<8021ee10>] (dump_stack+0x18/0x1c lib/dump_stack.c:129)
 r5:00000001 r4:00000001
[<8021edf8>] (dump_stack) from [<81a9b500>] (nmi_cpu_backtrace+0x160/0x17c lib/nmi_backtrace.c:113)
[<81a9b3a0>] (nmi_cpu_backtrace) from [<81a9b64c>] (nmi_trigger_cpumask_backtrace+0x130/0x1d8 lib/nmi_backtrace.c:62)
 r7:00000001 r6:8280c6d0 r5:8281af1c r4:ffffffff
[<81a9b51c>] (nmi_trigger_cpumask_backtrace) from [<8022f818>] (arch_trigger_cpumask_backtrace+0x18/0x1c arch/arm/kernel/smp.c:852)
 r9:00007bba r8:8280c850 r7:0001239e r6:00007bba r5:82ac27e4 r4:00000048
[<8022f800>] (arch_trigger_cpumask_backtrace) from [<81aa315c>] (trigger_all_cpu_backtrace include/linux/nmi.h:160 [inline])
[<8022f800>] (arch_trigger_cpumask_backtrace) from [<81aa315c>] (__sys_info lib/sys_info.c:157 [inline])
[<8022f800>] (arch_trigger_cpumask_backtrace) from [<81aa315c>] (sys_info+0x68/0xa8 lib/sys_info.c:165)
[<81aa30f4>] (sys_info) from [<80383788>] (check_hung_uninterruptible_tasks kernel/hung_task.c:346 [inline])
[<81aa30f4>] (sys_info) from [<80383788>] (watchdog+0x464/0x8a0 kernel/hung_task.c:515)
 r5:82ac27e4 r4:8659020c
[<80383324>] (watchdog) from [<8027f6fc>] (kthread+0x12c/0x280 kernel/kthread.c:463)
 r10:00000000 r9:00000000 r8:80383324 r7:830d6b00 r6:830d6b00 r5:8321d400
 r4:00000001
[<8027f5d0>] (kthread) from [<80200114>] (ret_from_fork+0x14/0x20 arch/arm/kernel/entry-common.S:137)
Exception stack(0xdf8d9fb0 to 0xdf8d9ff8)
9fa0:                                     00000000 00000000 00000000 00000000
9fc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
9fe0: 00000000 00000000 00000000 00000000 00000013 00000000
 r10:00000000 r9:00000000 r8:00000000 r7:00000000 r6:00000000 r5:8027f5d0
 r4:833ce680
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 2816 Comm: pr/ttyAMA-1 Not tainted syzkaller #0 PREEMPT 
Hardware name: ARM-Versatile Express
PC is at __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:152 [inline]
PC is at _raw_spin_unlock_irqrestore+0x28/0x54 kernel/locking/spinlock.c:194
LR is at spin_unlock_irqrestore include/linux/spinlock.h:406 [inline]
LR is at __uart_port_unlock_irqrestore include/linux/serial_core.h:616 [inline]
LR is at pl011_console_device_unlock+0x20/0x24 drivers/tty/serial/amba-pl011.c:2603
pc : [<81abc670>]    lr : [<80aa3828>]    psr: 60000013
sp : eb08deb0  ip : eb08dec0  fp : eb08debc
r10: 82959bc4  r9 : 00000000  r8 : 00000000
r7 : 00000117  r6 : 82959b28  r5 : 00000000  r4 : 00000001
r3 : 0000086b  r2 : 00000000  r1 : 60000013  r0 : 84f1d840
Flags: nZCv  IRQs on  FIQs on  Mode SVC_32  ISA ARM  Segment user
Control: 30c5387d  Table: 85a24380  DAC: fffffffd
Call trace: 
[<81abc648>] (_raw_spin_unlock_irqrestore) from [<80aa3828>] (spin_unlock_irqrestore include/linux/spinlock.h:406 [inline])
[<81abc648>] (_raw_spin_unlock_irqrestore) from [<80aa3828>] (__uart_port_unlock_irqrestore include/linux/serial_core.h:616 [inline])
[<81abc648>] (_raw_spin_unlock_irqrestore) from [<80aa3828>] (pl011_console_device_unlock+0x20/0x24 drivers/tty/serial/amba-pl011.c:2603)
[<80aa3808>] (pl011_console_device_unlock) from [<802e5720>] (nbcon_emit_one+0x88/0x100 kernel/printk/nbcon.c:1149)
[<802e5698>] (nbcon_emit_one) from [<802e59a0>] (nbcon_kthread_func+0x208/0x2e4 kernel/printk/nbcon.c:1255)
 r6:82abf0fc r5:82959b28 r4:83ef9800
[<802e5798>] (nbcon_kthread_func) from [<8027f6fc>] (kthread+0x12c/0x280 kernel/kthread.c:463)
 r10:00000000 r9:82959b28 r8:802e5798 r7:84b6be00 r6:84b6be00 r5:83ef9800
 r4:00000001
[<8027f5d0>] (kthread) from [<80200114>] (ret_from_fork+0x14/0x20 arch/arm/kernel/entry-common.S:137)
Exception stack(0xeb08dfb0 to 0xeb08dff8)
dfa0:                                     00000000 00000000 00000000 00000000
dfc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
dfe0: 00000000 00000000 00000000 00000000 00000013 00000000
 r10:00000000 r9:00000000 r8:00000000 r7:00000000 r6:00000000 r5:8027f5d0
 r4:84b6ea80