INFO: task kworker/0:9:4037 blocked for more than 430 seconds.
      Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/0:9     state:D stack:0     pid:4037  tgid:4037  ppid:2      task_flags:0x4208060 flags:0x00000000
Workqueue: events bpf_prog_free_deferred
Call trace: 
[<81a6441c>] (__schedule) from [<81a653b0>] (__schedule_loop kernel/sched/core.c:7011 [inline])
[<81a6441c>] (__schedule) from [<81a653b0>] (schedule+0x2c/0x130 kernel/sched/core.c:7026)
 r10:dfc8dd84 r9:00000002 r8:60000013 r7:829171a0 r6:dfc8dd8c r5:84b34800
 r4:84b34800
[<81a65384>] (schedule) from [<81a65798>] (schedule_preempt_disabled+0x18/0x24 kernel/sched/core.c:7083)
 r5:84b34800 r4:8291719c
[<81a65780>] (schedule_preempt_disabled) from [<81a68348>] (__mutex_lock_common kernel/locking/mutex.c:676 [inline])
[<81a65780>] (schedule_preempt_disabled) from [<81a68348>] (__mutex_lock.constprop.0+0x350/0xa24 kernel/locking/mutex.c:760)
[<81a67ff8>] (__mutex_lock.constprop.0) from [<81a68af0>] (__mutex_lock_slowpath+0x14/0x18 kernel/locking/mutex.c:1049)
 r10:8280c960 r9:00000001 r8:00000000 r7:ffffffff r6:00000000 r5:dfc8de08
 r4:00000000
[<81a68adc>] (__mutex_lock_slowpath) from [<81a68b30>] (mutex_lock+0x3c/0x40 kernel/locking/mutex.c:274)
[<81a68af4>] (mutex_lock) from [<804ea37c>] (_vm_unmap_aliases+0x68/0x240 mm/vmalloc.c:2918)
[<804ea314>] (_vm_unmap_aliases) from [<804ee15c>] (vm_reset_perms mm/vmalloc.c:3349 [inline])
[<804ea314>] (_vm_unmap_aliases) from [<804ee15c>] (vfree+0x16c/0x210 mm/vmalloc.c:3428)
 r10:83016170 r9:00000001 r8:00000000 r7:ffffffff r6:00000000 r5:84ec7e00
 r4:00000000
[<804edff0>] (vfree) from [<80559088>] (execmem_free+0x30/0x50 mm/execmem.c:503)
 r9:83018405 r8:84b34800 r7:00000000 r6:83018400 r5:00001000 r4:7f011000
[<80559058>] (execmem_free) from [<803c5fb0>] (bpf_jit_free_exec+0x10/0x14 kernel/bpf/core.c:1052)
 r5:00001000 r4:dfca9000
[<803c5fa0>] (bpf_jit_free_exec) from [<803c6390>] (bpf_jit_binary_free kernel/bpf/core.c:1098 [inline])
[<803c5fa0>] (bpf_jit_free_exec) from [<803c6390>] (bpf_jit_free+0x68/0xe4 kernel/bpf/core.c:1221)
[<803c6328>] (bpf_jit_free) from [<803c7438>] (bpf_prog_free_deferred+0x140/0x158 kernel/bpf/core.c:2898)
 r5:852ee78c r4:84943c00
[<803c72f8>] (bpf_prog_free_deferred) from [<802785a0>] (process_one_work+0x1b4/0x4f4 kernel/workqueue.c:3263)
 r7:dddcfd80 r6:83018400 r5:852ee78c r4:84943c00
[<802783ec>] (process_one_work) from [<802791e8>] (process_scheduled_works kernel/workqueue.c:3346 [inline])
[<802783ec>] (process_one_work) from [<802791e8>] (worker_thread+0x1fc/0x3d8 kernel/workqueue.c:3427)
 r10:61c88647 r9:84b34800 r8:84943c2c r7:82804d40 r6:dddcfd80 r5:dddcfda0
 r4:84943c00
[<80278fec>] (worker_thread) from [<8028020c>] (kthread+0x12c/0x280 kernel/kthread.c:463)
 r10:00000000 r9:84943c00 r8:80278fec r7:dfcbde60 r6:848fcc80 r5:84b34800
 r4:00000001
[<802800e0>] (kthread) from [<80200114>] (ret_from_fork+0x14/0x20 arch/arm/kernel/entry-common.S:137)
Exception stack(0xdfc8dfb0 to 0xdfc8dff8)
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 r5:802800e0
 r4:84ee0b80
INFO: task kworker/0:9:4037 is blocked on a mutex likely owned by task kworker/1:55:4553.
task:kworker/1:55    state:R  running task     stack:0     pid:4553  tgid:4553  ppid:2      task_flags:0x4208060 flags:0x00000000
Workqueue: events bpf_prog_free_deferred
Call trace: 
[<81a6441c>] (__schedule) from [<81a657e4>] (preempt_schedule_irq+0x40/0xa8 kernel/sched/core.c:7256)
 r10:8280c9b4 r9:83b41800 r8:80200c04 r7:e01b9d54 r6:ffffffff r5:83b41800
 r4:00000000
[<81a657a4>] (preempt_schedule_irq) from [<80200c24>] (svc_preempt+0x8/0x18)
Exception stack(0xe01b9d20 to 0xe01b9d68)
9d20: 9a7cc000 eaf4b000 00000001 80239bf8 7f011000 00000001 82acb1c4 82aca5a0
9d40: 7f011000 eaf4b000 8280c9b4 e01b9d9c e01b9da0 e01b9d70 80230af0 80239c10
9d60: 80000113 ffffffff
 r5:80000113 r4:80239c10
[<80230a8c>] (flush_tlb_kernel_range) from [<804ea140>] (__purge_vmap_area_lazy+0x284/0x458 mm/vmalloc.c:2342)
 r4:82acb1e4
[<804e9ebc>] (__purge_vmap_area_lazy) from [<804ea4f8>] (_vm_unmap_aliases+0x1e4/0x240 mm/vmalloc.c:2957)
 r10:00000000 r9:00000000 r8:00000000 r7:ffffffff r6:e01b9dc0 r5:e01b9e08
 r4:e01b9dc0
[<804ea314>] (_vm_unmap_aliases) from [<804ee15c>] (vm_reset_perms mm/vmalloc.c:3349 [inline])
[<804ea314>] (_vm_unmap_aliases) from [<804ee15c>] (vfree+0x16c/0x210 mm/vmalloc.c:3428)
 r10:83016170 r9:00000001 r8:00000000 r7:ffffffff r6:00000000 r5:853344c0
 r4:00000000
[<804edff0>] (vfree) from [<80559088>] (execmem_free+0x30/0x50 mm/execmem.c:503)
 r9:83018605 r8:83b41800 r7:00000000 r6:83018600 r5:00001000 r4:7f033000
[<80559058>] (execmem_free) from [<803c5fb0>] (bpf_jit_free_exec+0x10/0x14 kernel/bpf/core.c:1052)
 r5:00001000 r4:e01e7000
[<803c5fa0>] (bpf_jit_free_exec) from [<803c6390>] (bpf_jit_binary_free kernel/bpf/core.c:1098 [inline])
[<803c5fa0>] (bpf_jit_free_exec) from [<803c6390>] (bpf_jit_free+0x68/0xe4 kernel/bpf/core.c:1221)
[<803c6328>] (bpf_jit_free) from [<803c7438>] (bpf_prog_free_deferred+0x140/0x158 kernel/bpf/core.c:2898)
 r5:84f7cb8c r4:85331f00
[<803c72f8>] (bpf_prog_free_deferred) from [<802785a0>] (process_one_work+0x1b4/0x4f4 kernel/workqueue.c:3263)
 r7:ddde3d80 r6:83018600 r5:84f7cb8c r4:85331f00
[<802783ec>] (process_one_work) from [<802791e8>] (process_scheduled_works kernel/workqueue.c:3346 [inline])
[<802783ec>] (process_one_work) from [<802791e8>] (worker_thread+0x1fc/0x3d8 kernel/workqueue.c:3427)
 r10:61c88647 r9:83b41800 r8:85331f2c r7:82804d40 r6:ddde3d80 r5:ddde3da0
 r4:85331f00
[<80278fec>] (worker_thread) from [<8028020c>] (kthread+0x12c/0x280 kernel/kthread.c:463)
 r10:00000000 r9:85331f00 r8:80278fec r7:df959e60 r6:85331f80 r5:83b41800
 r4:00000001
[<802800e0>] (kthread) from [<80200114>] (ret_from_fork+0x14/0x20 arch/arm/kernel/entry-common.S:137)
Exception stack(0xe01b9fb0 to 0xe01b9ff8)
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 r5:802800e0
 r4:84e0e300
INFO: task kworker/0:12:4060 blocked for more than 430 seconds.
      Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/0:12    state:D stack:0     pid:4060  tgid:4060  ppid:2      task_flags:0x4208060 flags:0x00000000
Workqueue: events bpf_prog_free_deferred
Call trace: 
[<81a6441c>] (__schedule) from [<81a653b0>] (__schedule_loop kernel/sched/core.c:7011 [inline])
[<81a6441c>] (__schedule) from [<81a653b0>] (schedule+0x2c/0x130 kernel/sched/core.c:7026)
 r10:e0055d84 r9:00000002 r8:60000113 r7:829171a0 r6:e0055d8c r5:83bd5400
 r4:83bd5400
[<81a65384>] (schedule) from [<81a65798>] (schedule_preempt_disabled+0x18/0x24 kernel/sched/core.c:7083)
 r5:83bd5400 r4:8291719c
[<81a65780>] (schedule_preempt_disabled) from [<81a68348>] (__mutex_lock_common kernel/locking/mutex.c:676 [inline])
[<81a65780>] (schedule_preempt_disabled) from [<81a68348>] (__mutex_lock.constprop.0+0x350/0xa24 kernel/locking/mutex.c:760)
[<81a67ff8>] (__mutex_lock.constprop.0) from [<81a68af0>] (__mutex_lock_slowpath+0x14/0x18 kernel/locking/mutex.c:1049)
 r10:8280c960 r9:00000001 r8:00000000 r7:ffffffff r6:00000000 r5:e0055e08
 r4:00000000
[<81a68adc>] (__mutex_lock_slowpath) from [<81a68b30>] (mutex_lock+0x3c/0x40 kernel/locking/mutex.c:274)
[<81a68af4>] (mutex_lock) from [<804ea37c>] (_vm_unmap_aliases+0x68/0x240 mm/vmalloc.c:2918)
[<804ea314>] (_vm_unmap_aliases) from [<804ee15c>] (vm_reset_perms mm/vmalloc.c:3349 [inline])
[<804ea314>] (_vm_unmap_aliases) from [<804ee15c>] (vfree+0x16c/0x210 mm/vmalloc.c:3428)
 r10:83016170 r9:00000001 r8:00000000 r7:ffffffff r6:00000000 r5:85334440
 r4:00000000
[<804edff0>] (vfree) from [<80559088>] (execmem_free+0x30/0x50 mm/execmem.c:503)
 r9:83018405 r8:83bd5400 r7:00000000 r6:83018400 r5:00001000 r4:7f00f000
[<80559058>] (execmem_free) from [<803c5fb0>] (bpf_jit_free_exec+0x10/0x14 kernel/bpf/core.c:1052)
 r5:00001000 r4:e0273000
[<803c5fa0>] (bpf_jit_free_exec) from [<803c6390>] (bpf_jit_binary_free kernel/bpf/core.c:1098 [inline])
[<803c5fa0>] (bpf_jit_free_exec) from [<803c6390>] (bpf_jit_free+0x68/0xe4 kernel/bpf/core.c:1221)
[<803c6328>] (bpf_jit_free) from [<803c7438>] (bpf_prog_free_deferred+0x140/0x158 kernel/bpf/core.c:2898)
 r5:8526d78c r4:849e7480
[<803c72f8>] (bpf_prog_free_deferred) from [<802785a0>] (process_one_work+0x1b4/0x4f4 kernel/workqueue.c:3263)
 r7:dddcfd80 r6:83018400 r5:8526d78c r4:849e7480
[<802783ec>] (process_one_work) from [<802791e8>] (process_scheduled_works kernel/workqueue.c:3346 [inline])
[<802783ec>] (process_one_work) from [<802791e8>] (worker_thread+0x1fc/0x3d8 kernel/workqueue.c:3427)
 r10:61c88647 r9:83bd5400 r8:849e74ac r7:82804d40 r6:dddcfd80 r5:dddcfda0
 r4:849e7480
[<80278fec>] (worker_thread) from [<8028020c>] (kthread+0x12c/0x280 kernel/kthread.c:463)
 r10:00000000 r9:849e7480 r8:80278fec r7:dfc8de60 r6:849e7500 r5:83bd5400
 r4:00000001
[<802800e0>] (kthread) from [<80200114>] (ret_from_fork+0x14/0x20 arch/arm/kernel/entry-common.S:137)
Exception stack(0xe0055fb0 to 0xe0055ff8)
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 r5:802800e0
 r4:849f1180
INFO: task kworker/0:12:4060 is blocked on a mutex likely owned by task kworker/1:55:4553.
task:kworker/1:55    state:R  running task     stack:0     pid:4553  tgid:4553  ppid:2      task_flags:0x4208060 flags:0x00000000
Workqueue: events bpf_prog_free_deferred
Call trace: 
[<81a6441c>] (__schedule) from [<81a657e4>] (preempt_schedule_irq+0x40/0xa8 kernel/sched/core.c:7256)
 r10:8280c9b4 r9:83b41800 r8:80200c04 r7:e01b9d54 r6:ffffffff r5:83b41800
 r4:00000000
[<81a657a4>] (preempt_schedule_irq) from [<80200c24>] (svc_preempt+0x8/0x18)
Exception stack(0xe01b9d20 to 0xe01b9d68)
9d20: 9dcc2000 eaf4b000 00000001 80239bf8 7f011000 00000001 82acb1c4 82aca5a0
9d40: 7f011000 eaf4b000 8280c9b4 e01b9d9c e01b9da0 e01b9d70 80230af0 80239c10
9d60: 80000113 ffffffff
 r5:80000113 r4:80239c10
[<80230a8c>] (flush_tlb_kernel_range) from [<804ea140>] (__purge_vmap_area_lazy+0x284/0x458 mm/vmalloc.c:2342)
 r4:82acb1e4
[<804e9ebc>] (__purge_vmap_area_lazy) from [<804ea4f8>] (_vm_unmap_aliases+0x1e4/0x240 mm/vmalloc.c:2957)
 r10:00000000 r9:00000000 r8:00000000 r7:ffffffff r6:e01b9dc0 r5:e01b9e08
 r4:e01b9dc0
[<804ea314>] (_vm_unmap_aliases) from [<804ee15c>] (vm_reset_perms mm/vmalloc.c:3349 [inline])
[<804ea314>] (_vm_unmap_aliases) from [<804ee15c>] (vfree+0x16c/0x210 mm/vmalloc.c:3428)
 r10:83016170 r9:00000001 r8:00000000 r7:ffffffff r6:00000000 r5:853344c0
 r4:00000000
[<804edff0>] (vfree) from [<80559088>] (execmem_free+0x30/0x50 mm/execmem.c:503)
 r9:83018605 r8:83b41800 r7:00000000 r6:83018600 r5:00001000 r4:7f033000
[<80559058>] (execmem_free) from [<803c5fb0>] (bpf_jit_free_exec+0x10/0x14 kernel/bpf/core.c:1052)
 r5:00001000 r4:e01e7000
[<803c5fa0>] (bpf_jit_free_exec) from [<803c6390>] (bpf_jit_binary_free kernel/bpf/core.c:1098 [inline])
[<803c5fa0>] (bpf_jit_free_exec) from [<803c6390>] (bpf_jit_free+0x68/0xe4 kernel/bpf/core.c:1221)
[<803c6328>] (bpf_jit_free) from [<803c7438>] (bpf_prog_free_deferred+0x140/0x158 kernel/bpf/core.c:2898)
 r5:84f7cb8c r4:85331f00
[<803c72f8>] (bpf_prog_free_deferred) from [<802785a0>] (process_one_work+0x1b4/0x4f4 kernel/workqueue.c:3263)
 r7:ddde3d80 r6:83018600 r5:84f7cb8c r4:85331f00
[<802783ec>] (process_one_work) from [<802791e8>] (process_scheduled_works kernel/workqueue.c:3346 [inline])
[<802783ec>] (process_one_work) from [<802791e8>] (worker_thread+0x1fc/0x3d8 kernel/workqueue.c:3427)
 r10:61c88647 r9:83b41800 r8:85331f2c r7:82804d40 r6:ddde3d80 r5:ddde3da0
 r4:85331f00
[<80278fec>] (worker_thread) from [<8028020c>] (kthread+0x12c/0x280 kernel/kthread.c:463)
 r10:00000000 r9:85331f00 r8:80278fec r7:df959e60 r6:85331f80 r5:83b41800
 r4:00000001
[<802800e0>] (kthread) from [<80200114>] (ret_from_fork+0x14/0x20 arch/arm/kernel/entry-common.S:137)
Exception stack(0xe01b9fb0 to 0xe01b9ff8)
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 r5:802800e0
 r4:84e0e300
INFO: task kworker/0:13:4065 blocked for more than 430 seconds.
      Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/0:13    state:D stack:0     pid:4065  tgid:4065  ppid:2      task_flags:0x4208060 flags:0x00000000
Workqueue: events bpf_prog_free_deferred
Call trace: 
[<81a6441c>] (__schedule) from [<81a653b0>] (__schedule_loop kernel/sched/core.c:7011 [inline])
[<81a6441c>] (__schedule) from [<81a653b0>] (schedule+0x2c/0x130 kernel/sched/core.c:7026)
 r10:e01c9d84 r9:00000002 r8:60000113 r7:829171a0 r6:e01c9d8c r5:83bcec00
 r4:83bcec00
[<81a65384>] (schedule) from [<81a65798>] (schedule_preempt_disabled+0x18/0x24 kernel/sched/core.c:7083)
 r5:83bcec00 r4:8291719c
[<81a65780>] (schedule_preempt_disabled) from [<81a68348>] (__mutex_lock_common kernel/locking/mutex.c:676 [inline])
[<81a65780>] (schedule_preempt_disabled) from [<81a68348>] (__mutex_lock.constprop.0+0x350/0xa24 kernel/locking/mutex.c:760)
[<81a67ff8>] (__mutex_lock.constprop.0) from [<81a68af0>] (__mutex_lock_slowpath+0x14/0x18 kernel/locking/mutex.c:1049)
 r10:8280c960 r9:00000001 r8:00000000 r7:ffffffff r6:00000000 r5:e01c9e08
 r4:00000000
[<81a68adc>] (__mutex_lock_slowpath) from [<81a68b30>] (mutex_lock+0x3c/0x40 kernel/locking/mutex.c:274)
[<81a68af4>] (mutex_lock) from [<804ea37c>] (_vm_unmap_aliases+0x68/0x240 mm/vmalloc.c:2918)
[<804ea314>] (_vm_unmap_aliases) from [<804ee15c>] (vm_reset_perms mm/vmalloc.c:3349 [inline])
[<804ea314>] (_vm_unmap_aliases) from [<804ee15c>] (vfree+0x16c/0x210 mm/vmalloc.c:3428)
 r10:83016170 r9:00000001 r8:00000000 r7:ffffffff r6:00000000 r5:85341200
 r4:00000000
[<804edff0>] (vfree) from [<80559088>] (execmem_free+0x30/0x50 mm/execmem.c:503)
 r9:83018405 r8:83bcec00 r7:00000000 r6:83018400 r5:00001000 r4:7f02d000
[<80559058>] (execmem_free) from [<803c5fb0>] (bpf_jit_free_exec+0x10/0x14 kernel/bpf/core.c:1052)
 r5:00001000 r4:e00c3000
[<803c5fa0>] (bpf_jit_free_exec) from [<803c6390>] (bpf_jit_binary_free kernel/bpf/core.c:1098 [inline])
[<803c5fa0>] (bpf_jit_free_exec) from [<803c6390>] (bpf_jit_free+0x68/0xe4 kernel/bpf/core.c:1221)
[<803c6328>] (bpf_jit_free) from [<803c7438>] (bpf_prog_free_deferred+0x140/0x158 kernel/bpf/core.c:2898)
 r5:852abb8c r4:849e7680
[<803c72f8>] (bpf_prog_free_deferred) from [<802785a0>] (process_one_work+0x1b4/0x4f4 kernel/workqueue.c:3263)
 r7:dddcfd80 r6:83018400 r5:852abb8c r4:849e7680
[<802783ec>] (process_one_work) from [<802791e8>] (process_scheduled_works kernel/workqueue.c:3346 [inline])
[<802783ec>] (process_one_work) from [<802791e8>] (worker_thread+0x1fc/0x3d8 kernel/workqueue.c:3427)
 r10:61c88647 r9:83bcec00 r8:849e76ac r7:82804d40 r6:dddcfd80 r5:dddcfda0
 r4:849e7680
[<80278fec>] (worker_thread) from [<8028020c>] (kthread+0x12c/0x280 kernel/kthread.c:463)
 r10:00000000 r9:849e7680 r8:80278fec r7:dfc8de60 r6:849e7400 r5:83bcec00
 r4:00000001
[<802800e0>] (kthread) from [<80200114>] (ret_from_fork+0x14/0x20 arch/arm/kernel/entry-common.S:137)
Exception stack(0xe01c9fb0 to 0xe01c9ff8)
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 r5:802800e0
 r4:849f1480
INFO: task kworker/0:13:4065 is blocked on a mutex likely owned by task kworker/1:55:4553.
task:kworker/1:55    state:R  running task     stack:0     pid:4553  tgid:4553  ppid:2      task_flags:0x4208060 flags:0x00000000
Workqueue: events bpf_prog_free_deferred
Call trace: 
[<81a6441c>] (__schedule) from [<81a657e4>] (preempt_schedule_irq+0x40/0xa8 kernel/sched/core.c:7256)
 r10:8280c9b4 r9:83b41800 r8:80200c04 r7:e01b9d54 r6:ffffffff r5:83b41800
 r4:00000000
[<81a657a4>] (preempt_schedule_irq) from [<80200c24>] (svc_preempt+0x8/0x18)
Exception stack(0xe01b9d20 to 0xe01b9d68)
9d20: 9dcc2000 eaf4b000 00000001 80239bf8 7f011000 00000001 82acb1c4 82aca5a0
9d40: 7f011000 eaf4b000 8280c9b4 e01b9d9c e01b9da0 e01b9d70 80230af0 80239c10
9d60: 80000113 ffffffff
 r5:80000113 r4:80239c10
[<80230a8c>] (flush_tlb_kernel_range) from [<804ea140>] (__purge_vmap_area_lazy+0x284/0x458 mm/vmalloc.c:2342)
 r4:82acb1e4
[<804e9ebc>] (__purge_vmap_area_lazy) from [<804ea4f8>] (_vm_unmap_aliases+0x1e4/0x240 mm/vmalloc.c:2957)
 r10:00000000 r9:00000000 r8:00000000 r7:ffffffff r6:e01b9dc0 r5:e01b9e08
 r4:e01b9dc0
[<804ea314>] (_vm_unmap_aliases) from [<804ee15c>] (vm_reset_perms mm/vmalloc.c:3349 [inline])
[<804ea314>] (_vm_unmap_aliases) from [<804ee15c>] (vfree+0x16c/0x210 mm/vmalloc.c:3428)
 r10:83016170 r9:00000001 r8:00000000 r7:ffffffff r6:00000000 r5:853344c0
 r4:00000000
[<804edff0>] (vfree) from [<80559088>] (execmem_free+0x30/0x50 mm/execmem.c:503)
 r9:83018605 r8:83b41800 r7:00000000 r6:83018600 r5:00001000 r4:7f033000
[<80559058>] (execmem_free) from [<803c5fb0>] (bpf_jit_free_exec+0x10/0x14 kernel/bpf/core.c:1052)
 r5:00001000 r4:e01e7000
[<803c5fa0>] (bpf_jit_free_exec) from [<803c6390>] (bpf_jit_binary_free kernel/bpf/core.c:1098 [inline])
[<803c5fa0>] (bpf_jit_free_exec) from [<803c6390>] (bpf_jit_free+0x68/0xe4 kernel/bpf/core.c:1221)
[<803c6328>] (bpf_jit_free) from [<803c7438>] (bpf_prog_free_deferred+0x140/0x158 kernel/bpf/core.c:2898)
 r5:84f7cb8c r4:85331f00
[<803c72f8>] (bpf_prog_free_deferred) from [<802785a0>] (process_one_work+0x1b4/0x4f4 kernel/workqueue.c:3263)
 r7:ddde3d80 r6:83018600 r5:84f7cb8c r4:85331f00
[<802783ec>] (process_one_work) from [<802791e8>] (process_scheduled_works kernel/workqueue.c:3346 [inline])
[<802783ec>] (process_one_work) from [<802791e8>] (worker_thread+0x1fc/0x3d8 kernel/workqueue.c:3427)
 r10:61c88647 r9:83b41800 r8:85331f2c r7:82804d40 r6:ddde3d80 r5:ddde3da0
 r4:85331f00
[<80278fec>] (worker_thread) from [<8028020c>] (kthread+0x12c/0x280 kernel/kthread.c:463)
 r10:00000000 r9:85331f00 r8:80278fec r7:df959e60 r6:85331f80 r5:83b41800
 r4:00000001
[<802800e0>] (kthread) from [<80200114>] (ret_from_fork+0x14/0x20 arch/arm/kernel/entry-common.S:137)
Exception stack(0xe01b9fb0 to 0xe01b9ff8)
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 r5:802800e0
 r4:84e0e300
INFO: task kworker/0:14:4068 blocked for more than 430 seconds.
      Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/0:14    state:D stack:0     pid:4068  tgid:4068  ppid:2      task_flags:0x4208060 flags:0x00000000
Workqueue: events bpf_prog_free_deferred
Call trace: 
[<81a6441c>] (__schedule) from [<81a653b0>] (__schedule_loop kernel/sched/core.c:7011 [inline])
[<81a6441c>] (__schedule) from [<81a653b0>] (schedule+0x2c/0x130 kernel/sched/core.c:7026)
 r10:e01d9d84 r9:00000002 r8:60000013 r7:829171a0 r6:e01d9d8c r5:83bc8c00
 r4:83bc8c00
[<81a65384>] (schedule) from [<81a65798>] (schedule_preempt_disabled+0x18/0x24 kernel/sched/core.c:7083)
 r5:83bc8c00 r4:8291719c
[<81a65780>] (schedule_preempt_disabled) from [<81a68348>] (__mutex_lock_common kernel/locking/mutex.c:676 [inline])
[<81a65780>] (schedule_preempt_disabled) from [<81a68348>] (__mutex_lock.constprop.0+0x350/0xa24 kernel/locking/mutex.c:760)
[<81a67ff8>] (__mutex_lock.constprop.0) from [<81a68af0>] (__mutex_lock_slowpath+0x14/0x18 kernel/locking/mutex.c:1049)
 r10:8280c960 r9:00000001 r8:00000000 r7:ffffffff r6:00000000 r5:e01d9e08
 r4:00000000
[<81a68adc>] (__mutex_lock_slowpath) from [<81a68b30>] (mutex_lock+0x3c/0x40 kernel/locking/mutex.c:274)
[<81a68af4>] (mutex_lock) from [<804ea37c>] (_vm_unmap_aliases+0x68/0x240 mm/vmalloc.c:2918)
[<804ea314>] (_vm_unmap_aliases) from [<804ee15c>] (vm_reset_perms mm/vmalloc.c:3349 [inline])
[<804ea314>] (_vm_unmap_aliases) from [<804ee15c>] (vfree+0x16c/0x210 mm/vmalloc.c:3428)
 r10:83016170 r9:00000001 r8:00000000 r7:ffffffff r6:00000000 r5:84e0e380
 r4:00000000
[<804edff0>] (vfree) from [<80559088>] (execmem_free+0x30/0x50 mm/execmem.c:503)
 r9:83018405 r8:83bc8c00 r7:00000000 r6:83018400 r5:00001000 r4:7f00f000
[<80559058>] (execmem_free) from [<803c5fb0>] (bpf_jit_free_exec+0x10/0x14 kernel/bpf/core.c:1052)
 r5:00001000 r4:dfbab000
[<803c5fa0>] (bpf_jit_free_exec) from [<803c6390>] (bpf_jit_binary_free kernel/bpf/core.c:1098 [inline])
[<803c5fa0>] (bpf_jit_free_exec) from [<803c6390>] (bpf_jit_free+0x68/0xe4 kernel/bpf/core.c:1221)
[<803c6328>] (bpf_jit_free) from [<803c7438>] (bpf_prog_free_deferred+0x140/0x158 kernel/bpf/core.c:2898)
 r5:852efb8c r4:849e7900
[<803c72f8>] (bpf_prog_free_deferred) from [<802785a0>] (process_one_work+0x1b4/0x4f4 kernel/workqueue.c:3263)
 r7:dddcfd80 r6:83018400 r5:852efb8c r4:849e7900
[<802783ec>] (process_one_work) from [<802791e8>] (process_scheduled_works kernel/workqueue.c:3346 [inline])
[<802783ec>] (process_one_work) from [<802791e8>] (worker_thread+0x1fc/0x3d8 kernel/workqueue.c:3427)
 r10:61c88647 r9:83bc8c00 r8:849e792c r7:82804d40 r6:dddcfd80 r5:dddcfda0
 r4:849e7900
[<80278fec>] (worker_thread) from [<8028020c>] (kthread+0x12c/0x280 kernel/kthread.c:463)
 r10:00000000 r9:849e7900 r8:80278fec r7:e01c9e60 r6:849e7980 r5:83bc8c00
 r4:00000001
[<802800e0>] (kthread) from [<80200114>] (ret_from_fork+0x14/0x20 arch/arm/kernel/entry-common.S:137)
Exception stack(0xe01d9fb0 to 0xe01d9ff8)
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 r5:802800e0
 r4:849f1900
INFO: task kworker/0:14:4068 is blocked on a mutex likely owned by task kworker/1:55:4553.
task:kworker/1:55    state:R  running task     stack:0     pid:4553  tgid:4553  ppid:2      task_flags:0x4208060 flags:0x00000000
Workqueue: events bpf_prog_free_deferred
Call trace: 
[<81a6441c>] (__schedule) from [<81a657e4>] (preempt_schedule_irq+0x40/0xa8 kernel/sched/core.c:7256)
 r10:8280c9b4 r9:83b41800 r8:80200c04 r7:e01b9d54 r6:ffffffff r5:83b41800
 r4:00000000
[<81a657a4>] (preempt_schedule_irq) from [<80200c24>] (svc_preempt+0x8/0x18)
Exception stack(0xe01b9d20 to 0xe01b9d68)
9d20: 9dcc2000 eaf4b000 00000001 80239bf8 7f011000 00000001 82acb1c4 82aca5a0
9d40: 7f011000 eaf4b000 8280c9b4 e01b9d9c e01b9da0 e01b9d70 80230af0 80239c10
9d60: 80000113 ffffffff
 r5:80000113 r4:80239c10
[<80230a8c>] (flush_tlb_kernel_range) from [<804ea140>] (__purge_vmap_area_lazy+0x284/0x458 mm/vmalloc.c:2342)
 r4:82acb1e4
[<804e9ebc>] (__purge_vmap_area_lazy) from [<804ea4f8>] (_vm_unmap_aliases+0x1e4/0x240 mm/vmalloc.c:2957)
 r10:00000000 r9:00000000 r8:00000000 r7:ffffffff r6:e01b9dc0 r5:e01b9e08
 r4:e01b9dc0
[<804ea314>] (_vm_unmap_aliases) from [<804ee15c>] (vm_reset_perms mm/vmalloc.c:3349 [inline])
[<804ea314>] (_vm_unmap_aliases) from [<804ee15c>] (vfree+0x16c/0x210 mm/vmalloc.c:3428)
 r10:83016170 r9:00000001 r8:00000000 r7:ffffffff r6:00000000 r5:853344c0
 r4:00000000
[<804edff0>] (vfree) from [<80559088>] (execmem_free+0x30/0x50 mm/execmem.c:503)
 r9:83018605 r8:83b41800 r7:00000000 r6:83018600 r5:00001000 r4:7f033000
[<80559058>] (execmem_free) from [<803c5fb0>] (bpf_jit_free_exec+0x10/0x14 kernel/bpf/core.c:1052)
 r5:00001000 r4:e01e7000
[<803c5fa0>] (bpf_jit_free_exec) from [<803c6390>] (bpf_jit_binary_free kernel/bpf/core.c:1098 [inline])
[<803c5fa0>] (bpf_jit_free_exec) from [<803c6390>] (bpf_jit_free+0x68/0xe4 kernel/bpf/core.c:1221)
[<803c6328>] (bpf_jit_free) from [<803c7438>] (bpf_prog_free_deferred+0x140/0x158 kernel/bpf/core.c:2898)
 r5:84f7cb8c r4:85331f00
[<803c72f8>] (bpf_prog_free_deferred) from [<802785a0>] (process_one_work+0x1b4/0x4f4 kernel/workqueue.c:3263)
 r7:ddde3d80 r6:83018600 r5:84f7cb8c r4:85331f00
[<802783ec>] (process_one_work) from [<802791e8>] (process_scheduled_works kernel/workqueue.c:3346 [inline])
[<802783ec>] (process_one_work) from [<802791e8>] (worker_thread+0x1fc/0x3d8 kernel/workqueue.c:3427)
 r10:61c88647 r9:83b41800 r8:85331f2c r7:82804d40 r6:ddde3d80 r5:ddde3da0
 r4:85331f00
[<80278fec>] (worker_thread) from [<8028020c>] (kthread+0x12c/0x280 kernel/kthread.c:463)
 r10:00000000 r9:85331f00 r8:80278fec r7:df959e60 r6:85331f80 r5:83b41800
 r4:00000001
[<802800e0>] (kthread) from [<80200114>] (ret_from_fork+0x14/0x20 arch/arm/kernel/entry-common.S:137)
Exception stack(0xe01b9fb0 to 0xe01b9ff8)
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 r5:802800e0
 r4:84e0e300
INFO: task kworker/0:15:4072 blocked for more than 430 seconds.
      Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/0:15    state:D stack:0     pid:4072  tgid:4072  ppid:2      task_flags:0x4208060 flags:0x00000000
Workqueue: events bpf_prog_free_deferred
Call trace: 
[<81a6441c>] (__schedule) from [<81a653b0>] (__schedule_loop kernel/sched/core.c:7011 [inline])
[<81a6441c>] (__schedule) from [<81a653b0>] (schedule+0x2c/0x130 kernel/sched/core.c:7026)
 r10:e0225d84 r9:00000002 r8:60000113 r7:829171a0 r6:e0225d8c r5:83bcbc00
 r4:83bcbc00
[<81a65384>] (schedule) from [<81a65798>] (schedule_preempt_disabled+0x18/0x24 kernel/sched/core.c:7083)
 r5:83bcbc00 r4:8291719c
[<81a65780>] (schedule_preempt_disabled) from [<81a68348>] (__mutex_lock_common kernel/locking/mutex.c:676 [inline])
[<81a65780>] (schedule_preempt_disabled) from [<81a68348>] (__mutex_lock.constprop.0+0x350/0xa24 kernel/locking/mutex.c:760)
[<81a67ff8>] (__mutex_lock.constprop.0) from [<81a68af0>] (__mutex_lock_slowpath+0x14/0x18 kernel/locking/mutex.c:1049)
 r10:8280c960 r9:00000001 r8:00000000 r7:ffffffff r6:00000000 r5:e0225e08
 r4:00000000
[<81a68adc>] (__mutex_lock_slowpath) from [<81a68b30>] (mutex_lock+0x3c/0x40 kernel/locking/mutex.c:274)
[<81a68af4>] (mutex_lock) from [<804ea37c>] (_vm_unmap_aliases+0x68/0x240 mm/vmalloc.c:2918)
[<804ea314>] (_vm_unmap_aliases) from [<804ee15c>] (vm_reset_perms mm/vmalloc.c:3349 [inline])
[<804ea314>] (_vm_unmap_aliases) from [<804ee15c>] (vfree+0x16c/0x210 mm/vmalloc.c:3428)
 r10:83016170 r9:00000001 r8:00000000 r7:ffffffff r6:00000000 r5:85341440
 r4:00000000
[<804edff0>] (vfree) from [<80559088>] (execmem_free+0x30/0x50 mm/execmem.c:503)
 r9:83018405 r8:83bcbc00 r7:00000000 r6:83018400 r5:00001000 r4:7f029000
[<80559058>] (execmem_free) from [<803c5fb0>] (bpf_jit_free_exec+0x10/0x14 kernel/bpf/core.c:1052)
 r5:00001000 r4:df93d000
[<803c5fa0>] (bpf_jit_free_exec) from [<803c6390>] (bpf_jit_binary_free kernel/bpf/core.c:1098 [inline])
[<803c5fa0>] (bpf_jit_free_exec) from [<803c6390>] (bpf_jit_free+0x68/0xe4 kernel/bpf/core.c:1221)
[<803c6328>] (bpf_jit_free) from [<803c7438>] (bpf_prog_free_deferred+0x140/0x158 kernel/bpf/core.c:2898)
 r5:852aaf8c r4:849e7800
[<803c72f8>] (bpf_prog_free_deferred) from [<802785a0>] (process_one_work+0x1b4/0x4f4 kernel/workqueue.c:3263)
 r7:dddcfd80 r6:83018400 r5:852aaf8c r4:849e7800
[<802783ec>] (process_one_work) from [<802791e8>] (process_scheduled_works kernel/workqueue.c:3346 [inline])
[<802783ec>] (process_one_work) from [<802791e8>] (worker_thread+0x1fc/0x3d8 kernel/workqueue.c:3427)
 r10:61c88647 r9:83bcbc00 r8:849e782c r7:82804d40 r6:dddcfd80 r5:dddcfda0
 r4:849e7800
[<80278fec>] (worker_thread) from [<8028020c>] (kthread+0x12c/0x280 kernel/kthread.c:463)
 r10:00000000 r9:849e7800 r8:80278fec r7:e01c9e60 r6:849e7880 r5:83bcbc00
 r4:00000001
[<802800e0>] (kthread) from [<80200114>] (ret_from_fork+0x14/0x20 arch/arm/kernel/entry-common.S:137)
Exception stack(0xe0225fb0 to 0xe0225ff8)
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 r5:802800e0
 r4:849f1b80
INFO: task kworker/0:15:4072 is blocked on a mutex likely owned by task kworker/1:55:4553.
task:kworker/1:55    state:R  running task     stack:0     pid:4553  tgid:4553  ppid:2      task_flags:0x4208060 flags:0x00000000
Workqueue: events bpf_prog_free_deferred
Call trace: 
[<81a6441c>] (__schedule) from [<81a657e4>] (preempt_schedule_irq+0x40/0xa8 kernel/sched/core.c:7256)
 r10:8280c9b4 r9:83b41800 r8:80200c04 r7:e01b9d54 r6:ffffffff r5:83b41800
 r4:00000000
[<81a657a4>] (preempt_schedule_irq) from [<80200c24>] (svc_preempt+0x8/0x18)
Exception stack(0xe01b9d20 to 0xe01b9d68)
9d20: 9dcc2000 eaf4b000 00000001 80239bf8 7f011000 00000001 82acb1c4 82aca5a0
9d40: 7f011000 eaf4b000 8280c9b4 e01b9d9c e01b9da0 e01b9d70 80230af0 80239c10
9d60: 80000113 ffffffff
 r5:80000113 r4:80239c10
[<80230a8c>] (flush_tlb_kernel_range) from [<804ea140>] (__purge_vmap_area_lazy+0x284/0x458 mm/vmalloc.c:2342)
 r4:82acb1e4
[<804e9ebc>] (__purge_vmap_area_lazy) from [<804ea4f8>] (_vm_unmap_aliases+0x1e4/0x240 mm/vmalloc.c:2957)
 r10:00000000 r9:00000000 r8:00000000 r7:ffffffff r6:e01b9dc0 r5:e01b9e08
 r4:e01b9dc0
[<804ea314>] (_vm_unmap_aliases) from [<804ee15c>] (vm_reset_perms mm/vmalloc.c:3349 [inline])
[<804ea314>] (_vm_unmap_aliases) from [<804ee15c>] (vfree+0x16c/0x210 mm/vmalloc.c:3428)
 r10:83016170 r9:00000001 r8:00000000 r7:ffffffff r6:00000000 r5:853344c0
 r4:00000000
[<804edff0>] (vfree) from [<80559088>] (execmem_free+0x30/0x50 mm/execmem.c:503)
 r9:83018605 r8:83b41800 r7:00000000 r6:83018600 r5:00001000 r4:7f033000
[<80559058>] (execmem_free) from [<803c5fb0>] (bpf_jit_free_exec+0x10/0x14 kernel/bpf/core.c:1052)
 r5:00001000 r4:e01e7000
[<803c5fa0>] (bpf_jit_free_exec) from [<803c6390>] (bpf_jit_binary_free kernel/bpf/core.c:1098 [inline])
[<803c5fa0>] (bpf_jit_free_exec) from [<803c6390>] (bpf_jit_free+0x68/0xe4 kernel/bpf/core.c:1221)
[<803c6328>] (bpf_jit_free) from [<803c7438>] (bpf_prog_free_deferred+0x140/0x158 kernel/bpf/core.c:2898)
 r5:84f7cb8c r4:85331f00
[<803c72f8>] (bpf_prog_free_deferred) from [<802785a0>] (process_one_work+0x1b4/0x4f4 kernel/workqueue.c:3263)
 r7:ddde3d80 r6:83018600 r5:84f7cb8c r4:85331f00
[<802783ec>] (process_one_work) from [<802791e8>] (process_scheduled_works kernel/workqueue.c:3346 [inline])
[<802783ec>] (process_one_work) from [<802791e8>] (worker_thread+0x1fc/0x3d8 kernel/workqueue.c:3427)
 r10:61c88647 r9:83b41800 r8:85331f2c r7:82804d40 r6:ddde3d80 r5:ddde3da0
 r4:85331f00
[<80278fec>] (worker_thread) from [<8028020c>] (kthread+0x12c/0x280 kernel/kthread.c:463)
 r10:00000000 r9:85331f00 r8:80278fec r7:df959e60 r6:85331f80 r5:83b41800
 r4:00000001
[<802800e0>] (kthread) from [<80200114>] (ret_from_fork+0x14/0x20 arch/arm/kernel/entry-common.S:137)
Exception stack(0xe01b9fb0 to 0xe01b9ff8)
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 r5:802800e0
 r4:84e0e300
INFO: task kworker/1:57:4575 blocked for more than 430 seconds.
      Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/1:57    state:D stack:0     pid:4575  tgid:4575  ppid:2      task_flags:0x4208060 flags:0x00000000
Workqueue: events bpf_prog_free_deferred
Call trace: 
[<81a6441c>] (__schedule) from [<81a653b0>] (__schedule_loop kernel/sched/core.c:7011 [inline])
[<81a6441c>] (__schedule) from [<81a653b0>] (schedule+0x2c/0x130 kernel/sched/core.c:7026)
 r10:e832dd84 r9:00000002 r8:60000113 r7:829171a0 r6:e832dd8c r5:85312400
 r4:85312400
[<81a65384>] (schedule) from [<81a65798>] (schedule_preempt_disabled+0x18/0x24 kernel/sched/core.c:7083)
 r5:85312400 r4:8291719c
[<81a65780>] (schedule_preempt_disabled) from [<81a68348>] (__mutex_lock_common kernel/locking/mutex.c:676 [inline])
[<81a65780>] (schedule_preempt_disabled) from [<81a68348>] (__mutex_lock.constprop.0+0x350/0xa24 kernel/locking/mutex.c:760)
[<81a67ff8>] (__mutex_lock.constprop.0) from [<81a68af0>] (__mutex_lock_slowpath+0x14/0x18 kernel/locking/mutex.c:1049)
 r10:8280c960 r9:00000001 r8:00000000 r7:ffffffff r6:00000000 r5:e832de08
 r4:00000000
[<81a68adc>] (__mutex_lock_slowpath) from [<81a68b30>] (mutex_lock+0x3c/0x40 kernel/locking/mutex.c:274)
[<81a68af4>] (mutex_lock) from [<804ea37c>] (_vm_unmap_aliases+0x68/0x240 mm/vmalloc.c:2918)
[<804ea314>] (_vm_unmap_aliases) from [<804ee15c>] (vm_reset_perms mm/vmalloc.c:3349 [inline])
[<804ea314>] (_vm_unmap_aliases) from [<804ee15c>] (vfree+0x16c/0x210 mm/vmalloc.c:3428)
 r10:83016170 r9:00000001 r8:00000000 r7:ffffffff r6:00000000 r5:846f2d00
 r4:00000000
[<804edff0>] (vfree) from [<80559088>] (execmem_free+0x30/0x50 mm/execmem.c:503)
 r9:83018605 r8:85312400 r7:00000000 r6:83018600 r5:00001000 r4:7f011000
[<80559058>] (execmem_free) from [<803c5fb0>] (bpf_jit_free_exec+0x10/0x14 kernel/bpf/core.c:1052)
 r5:00001000 r4:dfb91000
[<803c5fa0>] (bpf_jit_free_exec) from [<803c6390>] (bpf_jit_binary_free kernel/bpf/core.c:1098 [inline])
[<803c5fa0>] (bpf_jit_free_exec) from [<803c6390>] (bpf_jit_free+0x68/0xe4 kernel/bpf/core.c:1221)
[<803c6328>] (bpf_jit_free) from [<803c7438>] (bpf_prog_free_deferred+0x140/0x158 kernel/bpf/core.c:2898)
 r5:852e578c r4:84182780
[<803c72f8>] (bpf_prog_free_deferred) from [<802785a0>] (process_one_work+0x1b4/0x4f4 kernel/workqueue.c:3263)
 r7:ddde3d80 r6:83018600 r5:852e578c r4:84182780
[<802783ec>] (process_one_work) from [<802791e8>] (process_scheduled_works kernel/workqueue.c:3346 [inline])
[<802783ec>] (process_one_work) from [<802791e8>] (worker_thread+0x1fc/0x3d8 kernel/workqueue.c:3427)
 r10:61c88647 r9:85312400 r8:841827ac r7:82804d40 r6:ddde3d80 r5:ddde3da0
 r4:84182780
[<80278fec>] (worker_thread) from [<8028020c>] (kthread+0x12c/0x280 kernel/kthread.c:463)
 r10:00000000 r9:84182780 r8:80278fec r7:e01b9e60 r6:84178380 r5:85312400
 r4:00000001
[<802800e0>] (kthread) from [<80200114>] (ret_from_fork+0x14/0x20 arch/arm/kernel/entry-common.S:137)
Exception stack(0xe832dfb0 to 0xe832dff8)
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 r5:802800e0
 r4:852f6600
INFO: task kworker/1:57:4575 is blocked on a mutex likely owned by task kworker/1:55:4553.
task:kworker/1:55    state:R  running task     stack:0     pid:4553  tgid:4553  ppid:2      task_flags:0x4208060 flags:0x00000000
Workqueue: events bpf_prog_free_deferred
Call trace: 
[<81a6441c>] (__schedule) from [<81a657e4>] (preempt_schedule_irq+0x40/0xa8 kernel/sched/core.c:7256)
 r10:8280c9b4 r9:83b41800 r8:80200c04 r7:e01b9d54 r6:ffffffff r5:83b41800
 r4:00000000
[<81a657a4>] (preempt_schedule_irq) from [<80200c24>] (svc_preempt+0x8/0x18)
Exception stack(0xe01b9d20 to 0xe01b9d68)
9d20: 9dcc2000 eaf4b000 00000001 80239bf8 7f011000 00000001 82acb1c4 82aca5a0
9d40: 7f011000 eaf4b000 8280c9b4 e01b9d9c e01b9da0 e01b9d70 80230af0 80239c10
9d60: 80000113 ffffffff
 r5:80000113 r4:80239c10
[<80230a8c>] (flush_tlb_kernel_range) from [<804ea140>] (__purge_vmap_area_lazy+0x284/0x458 mm/vmalloc.c:2342)
 r4:82acb1e4
[<804e9ebc>] (__purge_vmap_area_lazy) from [<804ea4f8>] (_vm_unmap_aliases+0x1e4/0x240 mm/vmalloc.c:2957)
 r10:00000000 r9:00000000 r8:00000000 r7:ffffffff r6:e01b9dc0 r5:e01b9e08
 r4:e01b9dc0
[<804ea314>] (_vm_unmap_aliases) from [<804ee15c>] (vm_reset_perms mm/vmalloc.c:3349 [inline])
[<804ea314>] (_vm_unmap_aliases) from [<804ee15c>] (vfree+0x16c/0x210 mm/vmalloc.c:3428)
 r10:83016170 r9:00000001 r8:00000000 r7:ffffffff r6:00000000 r5:853344c0
 r4:00000000
[<804edff0>] (vfree) from [<80559088>] (execmem_free+0x30/0x50 mm/execmem.c:503)
 r9:83018605 r8:83b41800 r7:00000000 r6:83018600 r5:00001000 r4:7f033000
[<80559058>] (execmem_free) from [<803c5fb0>] (bpf_jit_free_exec+0x10/0x14 kernel/bpf/core.c:1052)
 r5:00001000 r4:e01e7000
[<803c5fa0>] (bpf_jit_free_exec) from [<803c6390>] (bpf_jit_binary_free kernel/bpf/core.c:1098 [inline])
[<803c5fa0>] (bpf_jit_free_exec) from [<803c6390>] (bpf_jit_free+0x68/0xe4 kernel/bpf/core.c:1221)
[<803c6328>] (bpf_jit_free) from [<803c7438>] (bpf_prog_free_deferred+0x140/0x158 kernel/bpf/core.c:2898)
 r5:84f7cb8c r4:85331f00
[<803c72f8>] (bpf_prog_free_deferred) from [<802785a0>] (process_one_work+0x1b4/0x4f4 kernel/workqueue.c:3263)
 r7:ddde3d80 r6:83018600 r5:84f7cb8c r4:85331f00
[<802783ec>] (process_one_work) from [<802791e8>] (process_scheduled_works kernel/workqueue.c:3346 [inline])
[<802783ec>] (process_one_work) from [<802791e8>] (worker_thread+0x1fc/0x3d8 kernel/workqueue.c:3427)
 r10:61c88647 r9:83b41800 r8:85331f2c r7:82804d40 r6:ddde3d80 r5:ddde3da0
 r4:85331f00
[<80278fec>] (worker_thread) from [<8028020c>] (kthread+0x12c/0x280 kernel/kthread.c:463)
 r10:00000000 r9:85331f00 r8:80278fec r7:df959e60 r6:85331f80 r5:83b41800
 r4:00000001
[<802800e0>] (kthread) from [<80200114>] (ret_from_fork+0x14/0x20 arch/arm/kernel/entry-common.S:137)
Exception stack(0xe01b9fb0 to 0xe01b9ff8)
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 r5:802800e0
 r4:84e0e300
INFO: task kworker/1:61:4593 blocked for more than 430 seconds.
      Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/1:61    state:D stack:0     pid:4593  tgid:4593  ppid:2      task_flags:0x4208060 flags:0x00000000
Workqueue: events bpf_prog_free_deferred
Call trace: 
[<81a6441c>] (__schedule) from [<81a653b0>] (__schedule_loop kernel/sched/core.c:7011 [inline])
[<81a6441c>] (__schedule) from [<81a653b0>] (schedule+0x2c/0x130 kernel/sched/core.c:7026)
 r10:e0179d84 r9:00000002 r8:60000113 r7:829171a0 r6:e0179d8c r5:85310000
 r4:85310000
[<81a65384>] (schedule) from [<81a65798>] (schedule_preempt_disabled+0x18/0x24 kernel/sched/core.c:7083)
 r5:85310000 r4:8291719c
[<81a65780>] (schedule_preempt_disabled) from [<81a68348>] (__mutex_lock_common kernel/locking/mutex.c:676 [inline])
[<81a65780>] (schedule_preempt_disabled) from [<81a68348>] (__mutex_lock.constprop.0+0x350/0xa24 kernel/locking/mutex.c:760)
[<81a67ff8>] (__mutex_lock.constprop.0) from [<81a68af0>] (__mutex_lock_slowpath+0x14/0x18 kernel/locking/mutex.c:1049)
 r10:8280c960 r9:00000001 r8:00000000 r7:ffffffff r6:00000000 r5:e0179e08
 r4:00000000
[<81a68adc>] (__mutex_lock_slowpath) from [<81a68b30>] (mutex_lock+0x3c/0x40 kernel/locking/mutex.c:274)
[<81a68af4>] (mutex_lock) from [<804ea37c>] (_vm_unmap_aliases+0x68/0x240 mm/vmalloc.c:2918)
[<804ea314>] (_vm_unmap_aliases) from [<804ee15c>] (vm_reset_perms mm/vmalloc.c:3349 [inline])
[<804ea314>] (_vm_unmap_aliases) from [<804ee15c>] (vfree+0x16c/0x210 mm/vmalloc.c:3428)
 r10:83016170 r9:00000001 r8:00000000 r7:ffffffff r6:00000000 r5:84960440
 r4:00000000
[<804edff0>] (vfree) from [<80559088>] (execmem_free+0x30/0x50 mm/execmem.c:503)
 r9:83018605 r8:85310000 r7:00000000 r6:83018600 r5:00001000 r4:7f02f000
[<80559058>] (execmem_free) from [<803c5fb0>] (bpf_jit_free_exec+0x10/0x14 kernel/bpf/core.c:1052)
 r5:00001000 r4:dfc5f000
[<803c5fa0>] (bpf_jit_free_exec) from [<803c6390>] (bpf_jit_binary_free kernel/bpf/core.c:1098 [inline])
[<803c5fa0>] (bpf_jit_free_exec) from [<803c6390>] (bpf_jit_free+0x68/0xe4 kernel/bpf/core.c:1221)
[<803c6328>] (bpf_jit_free) from [<803c7438>] (bpf_prog_free_deferred+0x140/0x158 kernel/bpf/core.c:2898)
 r5:8529638c r4:85337100
[<803c72f8>] (bpf_prog_free_deferred) from [<802785a0>] (process_one_work+0x1b4/0x4f4 kernel/workqueue.c:3263)
 r7:ddde3d80 r6:83018600 r5:8529638c r4:85337100
[<802783ec>] (process_one_work) from [<802791e8>] (process_scheduled_works kernel/workqueue.c:3346 [inline])
[<802783ec>] (process_one_work) from [<802791e8>] (worker_thread+0x1fc/0x3d8 kernel/workqueue.c:3427)
 r10:61c88647 r9:85310000 r8:8533712c r7:82804d40 r6:ddde3d80 r5:ddde3da0
 r4:85337100
[<80278fec>] (worker_thread) from [<8028020c>] (kthread+0x12c/0x280 kernel/kthread.c:463)
 r10:00000000 r9:85337100 r8:80278fec r7:e01b9e60 r6:85337180 r5:85310000
 r4:00000001
[<802800e0>] (kthread) from [<80200114>] (ret_from_fork+0x14/0x20 arch/arm/kernel/entry-common.S:137)
Exception stack(0xe0179fb0 to 0xe0179ff8)
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 r5:802800e0
 r4:85334480
INFO: task kworker/1:61:4593 is blocked on a mutex likely owned by task kworker/1:55:4553.
task:kworker/1:55    state:R  running task     stack:0     pid:4553  tgid:4553  ppid:2      task_flags:0x4208060 flags:0x00000000
Workqueue: events bpf_prog_free_deferred
Call trace: 
[<81a6441c>] (__schedule) from [<81a657e4>] (preempt_schedule_irq+0x40/0xa8 kernel/sched/core.c:7256)
 r10:8280c9b4 r9:83b41800 r8:80200c04 r7:e01b9d54 r6:ffffffff r5:83b41800
 r4:00000000
[<81a657a4>] (preempt_schedule_irq) from [<80200c24>] (svc_preempt+0x8/0x18)
Exception stack(0xe01b9d20 to 0xe01b9d68)
9d20: 9dcc2000 eaf4b000 00000001 80239bf8 7f011000 00000001 82acb1c4 82aca5a0
9d40: 7f011000 eaf4b000 8280c9b4 e01b9d9c e01b9da0 e01b9d70 80230af0 80239c10
9d60: 80000113 ffffffff
 r5:80000113 r4:80239c10
[<80230a8c>] (flush_tlb_kernel_range) from [<804ea140>] (__purge_vmap_area_lazy+0x284/0x458 mm/vmalloc.c:2342)
 r4:82acb1e4
[<804e9ebc>] (__purge_vmap_area_lazy) from [<804ea4f8>] (_vm_unmap_aliases+0x1e4/0x240 mm/vmalloc.c:2957)
 r10:00000000 r9:00000000 r8:00000000 r7:ffffffff r6:e01b9dc0 r5:e01b9e08
 r4:e01b9dc0
[<804ea314>] (_vm_unmap_aliases) from [<804ee15c>] (vm_reset_perms mm/vmalloc.c:3349 [inline])
[<804ea314>] (_vm_unmap_aliases) from [<804ee15c>] (vfree+0x16c/0x210 mm/vmalloc.c:3428)
 r10:83016170 r9:00000001 r8:00000000 r7:ffffffff r6:00000000 r5:853344c0
 r4:00000000
[<804edff0>] (vfree) from [<80559088>] (execmem_free+0x30/0x50 mm/execmem.c:503)
 r9:83018605 r8:83b41800 r7:00000000 r6:83018600 r5:00001000 r4:7f033000
[<80559058>] (execmem_free) from [<803c5fb0>] (bpf_jit_free_exec+0x10/0x14 kernel/bpf/core.c:1052)
 r5:00001000 r4:e01e7000
[<803c5fa0>] (bpf_jit_free_exec) from [<803c6390>] (bpf_jit_binary_free kernel/bpf/core.c:1098 [inline])
[<803c5fa0>] (bpf_jit_free_exec) from [<803c6390>] (bpf_jit_free+0x68/0xe4 kernel/bpf/core.c:1221)
[<803c6328>] (bpf_jit_free) from [<803c7438>] (bpf_prog_free_deferred+0x140/0x158 kernel/bpf/core.c:2898)
 r5:84f7cb8c r4:85331f00
[<803c72f8>] (bpf_prog_free_deferred) from [<802785a0>] (process_one_work+0x1b4/0x4f4 kernel/workqueue.c:3263)
 r7:ddde3d80 r6:83018600 r5:84f7cb8c r4:85331f00
[<802783ec>] (process_one_work) from [<802791e8>] (process_scheduled_works kernel/workqueue.c:3346 [inline])
[<802783ec>] (process_one_work) from [<802791e8>] (worker_thread+0x1fc/0x3d8 kernel/workqueue.c:3427)
 r10:61c88647 r9:83b41800 r8:85331f2c r7:82804d40 r6:ddde3d80 r5:ddde3da0
 r4:85331f00
[<80278fec>] (worker_thread) from [<8028020c>] (kthread+0x12c/0x280 kernel/kthread.c:463)
 r10:00000000 r9:85331f00 r8:80278fec r7:df959e60 r6:85331f80 r5:83b41800
 r4:00000001
[<802800e0>] (kthread) from [<80200114>] (ret_from_fork+0x14/0x20 arch/arm/kernel/entry-common.S:137)
Exception stack(0xe01b9fb0 to 0xe01b9ff8)
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 r5:802800e0
 r4:84e0e300
INFO: task kworker/1:62:4596 blocked for more than 430 seconds.
      Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/1:62    state:D stack:0     pid:4596  tgid:4596  ppid:2      task_flags:0x4208060 flags:0x00000000
Workqueue: events bpf_prog_free_deferred
Call trace: 
[<81a6441c>] (__schedule) from [<81a653b0>] (__schedule_loop kernel/sched/core.c:7011 [inline])
[<81a6441c>] (__schedule) from [<81a653b0>] (schedule+0x2c/0x130 kernel/sched/core.c:7026)
 r10:ea4e9d84 r9:00000002 r8:60000113 r7:829171a0 r6:ea4e9d8c r5:85313000
 r4:85313000
[<81a65384>] (schedule) from [<81a65798>] (schedule_preempt_disabled+0x18/0x24 kernel/sched/core.c:7083)
 r5:85313000 r4:8291719c
[<81a65780>] (schedule_preempt_disabled) from [<81a68348>] (__mutex_lock_common kernel/locking/mutex.c:676 [inline])
[<81a65780>] (schedule_preempt_disabled) from [<81a68348>] (__mutex_lock.constprop.0+0x350/0xa24 kernel/locking/mutex.c:760)
[<81a67ff8>] (__mutex_lock.constprop.0) from [<81a68af0>] (__mutex_lock_slowpath+0x14/0x18 kernel/locking/mutex.c:1049)
 r10:8280c960 r9:00000001 r8:00000000 r7:ffffffff r6:00000000 r5:ea4e9e08
 r4:00000000
[<81a68adc>] (__mutex_lock_slowpath) from [<81a68b30>] (mutex_lock+0x3c/0x40 kernel/locking/mutex.c:274)
[<81a68af4>] (mutex_lock) from [<804ea37c>] (_vm_unmap_aliases+0x68/0x240 mm/vmalloc.c:2918)
[<804ea314>] (_vm_unmap_aliases) from [<804ee15c>] (vm_reset_perms mm/vmalloc.c:3349 [inline])
[<804ea314>] (_vm_unmap_aliases) from [<804ee15c>] (vfree+0x16c/0x210 mm/vmalloc.c:3428)
 r10:83016170 r9:00000001 r8:00000000 r7:ffffffff r6:00000000 r5:8533d580
 r4:00000000
[<804edff0>] (vfree) from [<80559088>] (execmem_free+0x30/0x50 mm/execmem.c:503)
 r9:83018605 r8:85313000 r7:00000000 r6:83018600 r5:00001000 r4:7f033000
[<80559058>] (execmem_free) from [<803c5fb0>] (bpf_jit_free_exec+0x10/0x14 kernel/bpf/core.c:1052)
 r5:00001000 r4:e0181000
[<803c5fa0>] (bpf_jit_free_exec) from [<803c6390>] (bpf_jit_binary_free kernel/bpf/core.c:1098 [inline])
[<803c5fa0>] (bpf_jit_free_exec) from [<803c6390>] (bpf_jit_free+0x68/0xe4 kernel/bpf/core.c:1221)
[<803c6328>] (bpf_jit_free) from [<803c7438>] (bpf_prog_free_deferred+0x140/0x158 kernel/bpf/core.c:2898)
 r5:852a8b8c r4:85337280
[<803c72f8>] (bpf_prog_free_deferred) from [<802785a0>] (process_one_work+0x1b4/0x4f4 kernel/workqueue.c:3263)
 r7:ddde3d80 r6:83018600 r5:852a8b8c r4:85337280
[<802783ec>] (process_one_work) from [<802791e8>] (process_scheduled_works kernel/workqueue.c:3346 [inline])
[<802783ec>] (process_one_work) from [<802791e8>] (worker_thread+0x1fc/0x3d8 kernel/workqueue.c:3427)
 r10:61c88647 r9:85313000 r8:853372ac r7:82804d40 r6:ddde3d80 r5:ddde3da0
 r4:85337280
[<80278fec>] (worker_thread) from [<8028020c>] (kthread+0x12c/0x280 kernel/kthread.c:463)
 r10:00000000 r9:85337280 r8:80278fec r7:e0179e60 r6:85337300 r5:85313000
 r4:00000001
[<802800e0>] (kthread) from [<80200114>] (ret_from_fork+0x14/0x20 arch/arm/kernel/entry-common.S:137)
Exception stack(0xea4e9fb0 to 0xea4e9ff8)
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 r5:802800e0
 r4:85334400
INFO: task kworker/1:62:4596 is blocked on a mutex likely owned by task kworker/1:55:4553.
task:kworker/1:55    state:R  running task     stack:0     pid:4553  tgid:4553  ppid:2      task_flags:0x4208060 flags:0x00000000
Workqueue: events bpf_prog_free_deferred
Call trace: 
[<81a6441c>] (__schedule) from [<81a657e4>] (preempt_schedule_irq+0x40/0xa8 kernel/sched/core.c:7256)
 r10:8280c9b4 r9:83b41800 r8:80200c04 r7:e01b9d54 r6:ffffffff r5:83b41800
 r4:00000000
[<81a657a4>] (preempt_schedule_irq) from [<80200c24>] (svc_preempt+0x8/0x18)
Exception stack(0xe01b9d20 to 0xe01b9d68)
9d20: 9dcc2000 eaf4b000 00000001 80239bf8 7f011000 00000001 82acb1c4 82aca5a0
9d40: 7f011000 eaf4b000 8280c9b4 e01b9d9c e01b9da0 e01b9d70 80230af0 80239c10
9d60: 80000113 ffffffff
 r5:80000113 r4:80239c10
[<80230a8c>] (flush_tlb_kernel_range) from [<804ea140>] (__purge_vmap_area_lazy+0x284/0x458 mm/vmalloc.c:2342)
 r4:82acb1e4
[<804e9ebc>] (__purge_vmap_area_lazy) from [<804ea4f8>] (_vm_unmap_aliases+0x1e4/0x240 mm/vmalloc.c:2957)
 r10:00000000 r9:00000000 r8:00000000 r7:ffffffff r6:e01b9dc0 r5:e01b9e08
 r4:e01b9dc0
[<804ea314>] (_vm_unmap_aliases) from [<804ee15c>] (vm_reset_perms mm/vmalloc.c:3349 [inline])
[<804ea314>] (_vm_unmap_aliases) from [<804ee15c>] (vfree+0x16c/0x210 mm/vmalloc.c:3428)
 r10:83016170 r9:00000001 r8:00000000 r7:ffffffff r6:00000000 r5:853344c0
 r4:00000000
[<804edff0>] (vfree) from [<80559088>] (execmem_free+0x30/0x50 mm/execmem.c:503)
 r9:83018605 r8:83b41800 r7:00000000 r6:83018600 r5:00001000 r4:7f033000
[<80559058>] (execmem_free) from [<803c5fb0>] (bpf_jit_free_exec+0x10/0x14 kernel/bpf/core.c:1052)
 r5:00001000 r4:e01e7000
[<803c5fa0>] (bpf_jit_free_exec) from [<803c6390>] (bpf_jit_binary_free kernel/bpf/core.c:1098 [inline])
[<803c5fa0>] (bpf_jit_free_exec) from [<803c6390>] (bpf_jit_free+0x68/0xe4 kernel/bpf/core.c:1221)
[<803c6328>] (bpf_jit_free) from [<803c7438>] (bpf_prog_free_deferred+0x140/0x158 kernel/bpf/core.c:2898)
 r5:84f7cb8c r4:85331f00
[<803c72f8>] (bpf_prog_free_deferred) from [<802785a0>] (process_one_work+0x1b4/0x4f4 kernel/workqueue.c:3263)
 r7:ddde3d80 r6:83018600 r5:84f7cb8c r4:85331f00
[<802783ec>] (process_one_work) from [<802791e8>] (process_scheduled_works kernel/workqueue.c:3346 [inline])
[<802783ec>] (process_one_work) from [<802791e8>] (worker_thread+0x1fc/0x3d8 kernel/workqueue.c:3427)
 r10:61c88647 r9:83b41800 r8:85331f2c r7:82804d40 r6:ddde3d80 r5:ddde3da0
 r4:85331f00
[<80278fec>] (worker_thread) from [<8028020c>] (kthread+0x12c/0x280 kernel/kthread.c:463)
 r10:00000000 r9:85331f00 r8:80278fec r7:df959e60 r6:85331f80 r5:83b41800
 r4:00000001
[<802800e0>] (kthread) from [<80200114>] (ret_from_fork+0x14/0x20 arch/arm/kernel/entry-common.S:137)
Exception stack(0xe01b9fb0 to 0xe01b9ff8)
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 r5:802800e0
 r4:84e0e300
INFO: task kworker/1:63:4603 blocked for more than 430 seconds.
      Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/1:63    state:D stack:0     pid:4603  tgid:4603  ppid:2      task_flags:0x4208060 flags:0x00000000
Workqueue: events bpf_prog_free_deferred
Call trace: 
[<81a6441c>] (__schedule) from [<81a653b0>] (__schedule_loop kernel/sched/core.c:7011 [inline])
[<81a6441c>] (__schedule) from [<81a653b0>] (schedule+0x2c/0x130 kernel/sched/core.c:7026)
 r10:e42bdd84 r9:00000002 r8:60000013 r7:829171a0 r6:e42bdd8c r5:851d0c00
 r4:851d0c00
[<81a65384>] (schedule) from [<81a65798>] (schedule_preempt_disabled+0x18/0x24 kernel/sched/core.c:7083)
 r5:851d0c00 r4:8291719c
[<81a65780>] (schedule_preempt_disabled) from [<81a68348>] (__mutex_lock_common kernel/locking/mutex.c:676 [inline])
[<81a65780>] (schedule_preempt_disabled) from [<81a68348>] (__mutex_lock.constprop.0+0x350/0xa24 kernel/locking/mutex.c:760)
[<81a67ff8>] (__mutex_lock.constprop.0) from [<81a68af0>] (__mutex_lock_slowpath+0x14/0x18 kernel/locking/mutex.c:1049)
 r10:8280c960 r9:00000001 r8:00000000 r7:ffffffff r6:00000000 r5:e42bde08
 r4:00000000
[<81a68adc>] (__mutex_lock_slowpath) from [<81a68b30>] (mutex_lock+0x3c/0x40 kernel/locking/mutex.c:274)
[<81a68af4>] (mutex_lock) from [<804ea37c>] (_vm_unmap_aliases+0x68/0x240 mm/vmalloc.c:2918)
[<804ea314>] (_vm_unmap_aliases) from [<804ee15c>] (vm_reset_perms mm/vmalloc.c:3349 [inline])
[<804ea314>] (_vm_unmap_aliases) from [<804ee15c>] (vfree+0x16c/0x210 mm/vmalloc.c:3428)
 r10:83016170 r9:00000001 r8:00000000 r7:ffffffff r6:00000000 r5:85334f40
 r4:00000000
[<804edff0>] (vfree) from [<80559088>] (execmem_free+0x30/0x50 mm/execmem.c:503)
 r9:83018605 r8:851d0c00 r7:00000000 r6:83018600 r5:00001000 r4:7f031000
[<80559058>] (execmem_free) from [<803c5fb0>] (bpf_jit_free_exec+0x10/0x14 kernel/bpf/core.c:1052)
 r5:00001000 r4:e0015000
[<803c5fa0>] (bpf_jit_free_exec) from [<803c6390>] (bpf_jit_binary_free kernel/bpf/core.c:1098 [inline])
[<803c5fa0>] (bpf_jit_free_exec) from [<803c6390>] (bpf_jit_free+0x68/0xe4 kernel/bpf/core.c:1221)
[<803c6328>] (bpf_jit_free) from [<803c7438>] (bpf_prog_free_deferred+0x140/0x158 kernel/bpf/core.c:2898)
 r5:85295b8c r4:85337500
[<803c72f8>] (bpf_prog_free_deferred) from [<802785a0>] (process_one_work+0x1b4/0x4f4 kernel/workqueue.c:3263)
 r7:ddde3d80 r6:83018600 r5:85295b8c r4:85337500
[<802783ec>] (process_one_work) from [<802791e8>] (process_scheduled_works kernel/workqueue.c:3346 [inline])
[<802783ec>] (process_one_work) from [<802791e8>] (worker_thread+0x1fc/0x3d8 kernel/workqueue.c:3427)
 r10:61c88647 r9:851d0c00 r8:8533752c r7:82804d40 r6:ddde3d80 r5:ddde3da0
 r4:85337500
[<80278fec>] (worker_thread) from [<8028020c>] (kthread+0x12c/0x280 kernel/kthread.c:463)
 r10:00000000 r9:85337500 r8:80278fec r7:ea4e9e60 r6:85337580 r5:851d0c00
 r4:00000001
[<802800e0>] (kthread) from [<80200114>] (ret_from_fork+0x14/0x20 arch/arm/kernel/entry-common.S:137)
Exception stack(0xe42bdfb0 to 0xe42bdff8)
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 r5:802800e0
 r4:85334fc0
INFO: task kworker/1:63:4603 is blocked on a mutex likely owned by task kworker/1:55:4553.
task:kworker/1:55    state:R  running task     stack:0     pid:4553  tgid:4553  ppid:2      task_flags:0x4208060 flags:0x00000000
Workqueue: events bpf_prog_free_deferred
Call trace: 
[<81a6441c>] (__schedule) from [<81a657e4>] (preempt_schedule_irq+0x40/0xa8 kernel/sched/core.c:7256)
 r10:8280c9b4 r9:83b41800 r8:80200c04 r7:e01b9d54 r6:ffffffff r5:83b41800
 r4:00000000
[<81a657a4>] (preempt_schedule_irq) from [<80200c24>] (svc_preempt+0x8/0x18)
Exception stack(0xe01b9d20 to 0xe01b9d68)
9d20: 9dcc2000 eaf4b000 00000001 80239bf8 7f011000 00000001 82acb1c4 82aca5a0
9d40: 7f011000 eaf4b000 8280c9b4 e01b9d9c e01b9da0 e01b9d70 80230af0 80239c10
9d60: 80000113 ffffffff
 r5:80000113 r4:80239c10
[<80230a8c>] (flush_tlb_kernel_range) from [<804ea140>] (__purge_vmap_area_lazy+0x284/0x458 mm/vmalloc.c:2342)
 r4:82acb1e4
[<804e9ebc>] (__purge_vmap_area_lazy) from [<804ea4f8>] (_vm_unmap_aliases+0x1e4/0x240 mm/vmalloc.c:2957)
 r10:00000000 r9:00000000 r8:00000000 r7:ffffffff r6:e01b9dc0 r5:e01b9e08
 r4:e01b9dc0
[<804ea314>] (_vm_unmap_aliases) from [<804ee15c>] (vm_reset_perms mm/vmalloc.c:3349 [inline])
[<804ea314>] (_vm_unmap_aliases) from [<804ee15c>] (vfree+0x16c/0x210 mm/vmalloc.c:3428)
 r10:83016170 r9:00000001 r8:00000000 r7:ffffffff r6:00000000 r5:853344c0
 r4:00000000
[<804edff0>] (vfree) from [<80559088>] (execmem_free+0x30/0x50 mm/execmem.c:503)
 r9:83018605 r8:83b41800 r7:00000000 r6:83018600 r5:00001000 r4:7f033000
[<80559058>] (execmem_free) from [<803c5fb0>] (bpf_jit_free_exec+0x10/0x14 kernel/bpf/core.c:1052)
 r5:00001000 r4:e01e7000
[<803c5fa0>] (bpf_jit_free_exec) from [<803c6390>] (bpf_jit_binary_free kernel/bpf/core.c:1098 [inline])
[<803c5fa0>] (bpf_jit_free_exec) from [<803c6390>] (bpf_jit_free+0x68/0xe4 kernel/bpf/core.c:1221)
[<803c6328>] (bpf_jit_free) from [<803c7438>] (bpf_prog_free_deferred+0x140/0x158 kernel/bpf/core.c:2898)
 r5:84f7cb8c r4:85331f00
[<803c72f8>] (bpf_prog_free_deferred) from [<802785a0>] (process_one_work+0x1b4/0x4f4 kernel/workqueue.c:3263)
 r7:ddde3d80 r6:83018600 r5:84f7cb8c r4:85331f00
[<802783ec>] (process_one_work) from [<802791e8>] (process_scheduled_works kernel/workqueue.c:3346 [inline])
[<802783ec>] (process_one_work) from [<802791e8>] (worker_thread+0x1fc/0x3d8 kernel/workqueue.c:3427)
 r10:61c88647 r9:83b41800 r8:85331f2c r7:82804d40 r6:ddde3d80 r5:ddde3da0
 r4:85331f00
[<80278fec>] (worker_thread) from [<8028020c>] (kthread+0x12c/0x280 kernel/kthread.c:463)
 r10:00000000 r9:85331f00 r8:80278fec r7:df959e60 r6:85331f80 r5:83b41800
 r4:00000001
[<802800e0>] (kthread) from [<80200114>] (ret_from_fork+0x14/0x20 arch/arm/kernel/entry-common.S:137)
Exception stack(0xe01b9fb0 to 0xe01b9ff8)
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 r5:802800e0
 r4:84e0e300
INFO: task kworker/1:64:4604 blocked for more than 430 seconds.
      Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/1:64    state:D stack:0     pid:4604  tgid:4604  ppid:2      task_flags:0x4208060 flags:0x00000000
Workqueue: events bpf_prog_free_deferred
Call trace: 
[<81a6441c>] (__schedule) from [<81a653b0>] (__schedule_loop kernel/sched/core.c:7011 [inline])
[<81a6441c>] (__schedule) from [<81a653b0>] (schedule+0x2c/0x130 kernel/sched/core.c:7026)
 r10:e42cdd84 r9:00000002 r8:60000113 r7:829171a0 r6:e42cdd8c r5:851d0000
 r4:851d0000
[<81a65384>] (schedule) from [<81a65798>] (schedule_preempt_disabled+0x18/0x24 kernel/sched/core.c:7083)
 r5:851d0000 r4:8291719c
[<81a65780>] (schedule_preempt_disabled) from [<81a68348>] (__mutex_lock_common kernel/locking/mutex.c:676 [inline])
[<81a65780>] (schedule_preempt_disabled) from [<81a68348>] (__mutex_lock.constprop.0+0x350/0xa24 kernel/locking/mutex.c:760)
[<81a67ff8>] (__mutex_lock.constprop.0) from [<81a68af0>] (__mutex_lock_slowpath+0x14/0x18 kernel/locking/mutex.c:1049)
 r10:8280c960 r9:00000001 r8:00000000 r7:ffffffff r6:00000000 r5:e42cde08
 r4:00000000
[<81a68adc>] (__mutex_lock_slowpath) from [<81a68b30>] (mutex_lock+0x3c/0x40 kernel/locking/mutex.c:274)
[<81a68af4>] (mutex_lock) from [<804ea37c>] (_vm_unmap_aliases+0x68/0x240 mm/vmalloc.c:2918)
[<804ea314>] (_vm_unmap_aliases) from [<804ee15c>] (vm_reset_perms mm/vmalloc.c:3349 [inline])
[<804ea314>] (_vm_unmap_aliases) from [<804ee15c>] (vfree+0x16c/0x210 mm/vmalloc.c:3428)
 r10:83016170 r9:00000001 r8:00000000 r7:ffffffff r6:00000000 r5:84905900
 r4:00000000
[<804edff0>] (vfree) from [<80559088>] (execmem_free+0x30/0x50 mm/execmem.c:503)
 r9:83018605 r8:851d0000 r7:00000000 r6:83018600 r5:00001000 r4:7f029000
[<80559058>] (execmem_free) from [<803c5fb0>] (bpf_jit_free_exec+0x10/0x14 kernel/bpf/core.c:1052)
 r5:00001000 r4:df93b000
[<803c5fa0>] (bpf_jit_free_exec) from [<803c6390>] (bpf_jit_binary_free kernel/bpf/core.c:1098 [inline])
[<803c5fa0>] (bpf_jit_free_exec) from [<803c6390>] (bpf_jit_free+0x68/0xe4 kernel/bpf/core.c:1221)
[<803c6328>] (bpf_jit_free) from [<803c7438>] (bpf_prog_free_deferred+0x140/0x158 kernel/bpf/core.c:2898)
 r5:84d8238c r4:85337480
[<803c72f8>] (bpf_prog_free_deferred) from [<802785a0>] (process_one_work+0x1b4/0x4f4 kernel/workqueue.c:3263)
 r7:ddde3d80 r6:83018600 r5:84d8238c r4:85337480
[<802783ec>] (process_one_work) from [<802791e8>] (process_scheduled_works kernel/workqueue.c:3346 [inline])
[<802783ec>] (process_one_work) from [<802791e8>] (worker_thread+0x1fc/0x3d8 kernel/workqueue.c:3427)
 r10:61c88647 r9:851d0000 r8:853374ac r7:82804d40 r6:ddde3d80 r5:ddde3da0
 r4:85337480
[<80278fec>] (worker_thread) from [<8028020c>] (kthread+0x12c/0x280 kernel/kthread.c:463)
 r10:00000000 r9:85337480 r8:80278fec r7:ea4e9e60 r6:85337680 r5:851d0000
 r4:00000001
[<802800e0>] (kthread) from [<80200114>] (ret_from_fork+0x14/0x20 arch/arm/kernel/entry-common.S:137)
Exception stack(0xe42cdfb0 to 0xe42cdff8)
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 r5:802800e0
 r4:84ec7840
INFO: task kworker/1:64:4604 is blocked on a mutex likely owned by task kworker/1:55:4553.
task:kworker/1:55    state:R  running task     stack:0     pid:4553  tgid:4553  ppid:2      task_flags:0x4208060 flags:0x00000000
Workqueue: events bpf_prog_free_deferred
Call trace: 
[<81a6441c>] (__schedule) from [<81a657e4>] (preempt_schedule_irq+0x40/0xa8 kernel/sched/core.c:7256)
 r10:8280c9b4 r9:83b41800 r8:80200c04 r7:e01b9d54 r6:ffffffff r5:83b41800
 r4:00000000
[<81a657a4>] (preempt_schedule_irq) from [<80200c24>] (svc_preempt+0x8/0x18)
Exception stack(0xe01b9d20 to 0xe01b9d68)
9d20: 9dcc2000 eaf4b000 00000001 80239bf8 7f011000 00000001 82acb1c4 82aca5a0
9d40: 7f011000 eaf4b000 8280c9b4 e01b9d9c e01b9da0 e01b9d70 80230af0 80239c10
9d60: 80000113 ffffffff
 r5:80000113 r4:80239c10
[<80230a8c>] (flush_tlb_kernel_range) from [<804ea140>] (__purge_vmap_area_lazy+0x284/0x458 mm/vmalloc.c:2342)
 r4:82acb1e4
[<804e9ebc>] (__purge_vmap_area_lazy) from [<804ea4f8>] (_vm_unmap_aliases+0x1e4/0x240 mm/vmalloc.c:2957)
 r10:00000000 r9:00000000 r8:00000000 r7:ffffffff r6:e01b9dc0 r5:e01b9e08
 r4:e01b9dc0
[<804ea314>] (_vm_unmap_aliases) from [<804ee15c>] (vm_reset_perms mm/vmalloc.c:3349 [inline])
[<804ea314>] (_vm_unmap_aliases) from [<804ee15c>] (vfree+0x16c/0x210 mm/vmalloc.c:3428)
 r10:83016170 r9:00000001 r8:00000000 r7:ffffffff r6:00000000 r5:853344c0
 r4:00000000
[<804edff0>] (vfree) from [<80559088>] (execmem_free+0x30/0x50 mm/execmem.c:503)
 r9:83018605 r8:83b41800 r7:00000000 r6:83018600 r5:00001000 r4:7f033000
[<80559058>] (execmem_free) from [<803c5fb0>] (bpf_jit_free_exec+0x10/0x14 kernel/bpf/core.c:1052)
 r5:00001000 r4:e01e7000
[<803c5fa0>] (bpf_jit_free_exec) from [<803c6390>] (bpf_jit_binary_free kernel/bpf/core.c:1098 [inline])
[<803c5fa0>] (bpf_jit_free_exec) from [<803c6390>] (bpf_jit_free+0x68/0xe4 kernel/bpf/core.c:1221)
[<803c6328>] (bpf_jit_free) from [<803c7438>] (bpf_prog_free_deferred+0x140/0x158 kernel/bpf/core.c:2898)
 r5:84f7cb8c r4:85331f00
[<803c72f8>] (bpf_prog_free_deferred) from [<802785a0>] (process_one_work+0x1b4/0x4f4 kernel/workqueue.c:3263)
 r7:ddde3d80 r6:83018600 r5:84f7cb8c r4:85331f00
[<802783ec>] (process_one_work) from [<802791e8>] (process_scheduled_works kernel/workqueue.c:3346 [inline])
[<802783ec>] (process_one_work) from [<802791e8>] (worker_thread+0x1fc/0x3d8 kernel/workqueue.c:3427)
 r10:61c88647 r9:83b41800 r8:85331f2c r7:82804d40 r6:ddde3d80 r5:ddde3da0
 r4:85331f00
[<80278fec>] (worker_thread) from [<8028020c>] (kthread+0x12c/0x280 kernel/kthread.c:463)
 r10:00000000 r9:85331f00 r8:80278fec r7:df959e60 r6:85331f80 r5:83b41800
 r4:00000001
[<802800e0>] (kthread) from [<80200114>] (ret_from_fork+0x14/0x20 arch/arm/kernel/entry-common.S:137)
Exception stack(0xe01b9fb0 to 0xe01b9ff8)
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 r5:802800e0
 r4:84e0e300
Future hung task reports are suppressed, see sysctl kernel.hung_task_warnings
INFO: task kworker/1:65:4607 blocked for more than 430 seconds.
      Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/1:65    state:D stack:0     pid:4607  tgid:4607  ppid:2      task_flags:0x4208060 flags:0x00000000
Workqueue: events bpf_prog_free_deferred
Call trace: 
[<81a6441c>] (__schedule) from [<81a653b0>] (__schedule_loop kernel/sched/core.c:7011 [inline])
[<81a6441c>] (__schedule) from [<81a653b0>] (schedule+0x2c/0x130 kernel/sched/core.c:7026)
 r10:e01a1d84 r9:00000002 r8:60000113 r7:829171a0 r6:e01a1d8c r5:851d2400
 r4:851d2400
[<81a65384>] (schedule) from [<81a65798>] (schedule_preempt_disabled+0x18/0x24 kernel/sched/core.c:7083)
 r5:851d2400 r4:8291719c
[<81a65780>] (schedule_preempt_disabled) from [<81a68348>] (__mutex_lock_common kernel/locking/mutex.c:676 [inline])
[<81a65780>] (schedule_preempt_disabled) from [<81a68348>] (__mutex_lock.constprop.0+0x350/0xa24 kernel/locking/mutex.c:760)
[<81a67ff8>] (__mutex_lock.constprop.0) from [<81a68af0>] (__mutex_lock_slowpath+0x14/0x18 kernel/locking/mutex.c:1049)
 r10:8280c960 r9:00000001 r8:00000000 r7:ffffffff r6:00000000 r5:e01a1e08
 r4:00000000
[<81a68adc>] (__mutex_lock_slowpath) from [<81a68b30>] (mutex_lock+0x3c/0x40 kernel/locking/mutex.c:274)
[<81a68af4>] (mutex_lock) from [<804ea37c>] (_vm_unmap_aliases+0x68/0x240 mm/vmalloc.c:2918)
[<804ea314>] (_vm_unmap_aliases) from [<804ee15c>] (vm_reset_perms mm/vmalloc.c:3349 [inline])
[<804ea314>] (_vm_unmap_aliases) from [<804ee15c>] (vfree+0x16c/0x210 mm/vmalloc.c:3428)
 r10:83016170 r9:00000001 r8:00000000 r7:ffffffff r6:00000000 r5:84a2bb40
 r4:00000000
[<804edff0>] (vfree) from [<80559088>] (execmem_free+0x30/0x50 mm/execmem.c:503)
 r9:83018605 r8:851d2400 r7:00000000 r6:83018600 r5:00001000 r4:7f02b000
[<80559058>] (execmem_free) from [<803c5fb0>] (bpf_jit_free_exec+0x10/0x14 kernel/bpf/core.c:1052)
 r5:00001000 r4:dfa87000
[<803c5fa0>] (bpf_jit_free_exec) from [<803c6390>] (bpf_jit_binary_free kernel/bpf/core.c:1098 [inline])
[<803c5fa0>] (bpf_jit_free_exec) from [<803c6390>] (bpf_jit_free+0x68/0xe4 kernel/bpf/core.c:1221)
[<803c6328>] (bpf_jit_free) from [<803c7438>] (bpf_prog_free_deferred+0x140/0x158 kernel/bpf/core.c:2898)
 r5:85297b8c r4:85337880
[<803c72f8>] (bpf_prog_free_deferred) from [<802785a0>] (process_one_work+0x1b4/0x4f4 kernel/workqueue.c:3263)
 r7:ddde3d80 r6:83018600 r5:85297b8c r4:85337880
[<802783ec>] (process_one_work) from [<802791e8>] (process_scheduled_works kernel/workqueue.c:3346 [inline])
[<802783ec>] (process_one_work) from [<802791e8>] (worker_thread+0x1fc/0x3d8 kernel/workqueue.c:3427)
 r10:61c88647 r9:851d2400 r8:853378ac r7:82804d40 r6:ddde3d80 r5:ddde3da0
 r4:85337880
[<80278fec>] (worker_thread) from [<8028020c>] (kthread+0x12c/0x280 kernel/kthread.c:463)
 r10:00000000 r9:85337880 r8:80278fec r7:ea4e9e60 r6:85337900 r5:851d2400
 r4:00000001
[<802800e0>] (kthread) from [<80200114>] (ret_from_fork+0x14/0x20 arch/arm/kernel/entry-common.S:137)
Exception stack(0xe01a1fb0 to 0xe01a1ff8)
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 r5:802800e0
 r4:852f4300
INFO: task kworker/1:65:4607 is blocked on a mutex likely owned by task kworker/1:55:4553.
task:kworker/1:55    state:R  running task     stack:0     pid:4553  tgid:4553  ppid:2      task_flags:0x4208060 flags:0x00000000
Workqueue: events bpf_prog_free_deferred
Call trace: 
[<81a6441c>] (__schedule) from [<81a657e4>] (preempt_schedule_irq+0x40/0xa8 kernel/sched/core.c:7256)
 r10:8280c9b4 r9:83b41800 r8:80200c04 r7:e01b9d54 r6:ffffffff r5:83b41800
 r4:00000000
[<81a657a4>] (preempt_schedule_irq) from [<80200c24>] (svc_preempt+0x8/0x18)
Exception stack(0xe01b9d20 to 0xe01b9d68)
9d20: 9dcc2000 eaf4b000 00000001 80239bf8 7f011000 00000001 82acb1c4 82aca5a0
9d40: 7f011000 eaf4b000 8280c9b4 e01b9d9c e01b9da0 e01b9d70 80230af0 80239c10
9d60: 80000113 ffffffff
 r5:80000113 r4:80239c10
[<80230a8c>] (flush_tlb_kernel_range) from [<804ea140>] (__purge_vmap_area_lazy+0x284/0x458 mm/vmalloc.c:2342)
 r4:82acb1e4
[<804e9ebc>] (__purge_vmap_area_lazy) from [<804ea4f8>] (_vm_unmap_aliases+0x1e4/0x240 mm/vmalloc.c:2957)
 r10:00000000 r9:00000000 r8:00000000 r7:ffffffff r6:e01b9dc0 r5:e01b9e08
 r4:e01b9dc0
[<804ea314>] (_vm_unmap_aliases) from [<804ee15c>] (vm_reset_perms mm/vmalloc.c:3349 [inline])
[<804ea314>] (_vm_unmap_aliases) from [<804ee15c>] (vfree+0x16c/0x210 mm/vmalloc.c:3428)
 r10:83016170 r9:00000001 r8:00000000 r7:ffffffff r6:00000000 r5:853344c0
 r4:00000000
[<804edff0>] (vfree) from [<80559088>] (execmem_free+0x30/0x50 mm/execmem.c:503)
 r9:83018605 r8:83b41800 r7:00000000 r6:83018600 r5:00001000 r4:7f033000
[<80559058>] (execmem_free) from [<803c5fb0>] (bpf_jit_free_exec+0x10/0x14 kernel/bpf/core.c:1052)
 r5:00001000 r4:e01e7000
[<803c5fa0>] (bpf_jit_free_exec) from [<803c6390>] (bpf_jit_binary_free kernel/bpf/core.c:1098 [inline])
[<803c5fa0>] (bpf_jit_free_exec) from [<803c6390>] (bpf_jit_free+0x68/0xe4 kernel/bpf/core.c:1221)
[<803c6328>] (bpf_jit_free) from [<803c7438>] (bpf_prog_free_deferred+0x140/0x158 kernel/bpf/core.c:2898)
 r5:84f7cb8c r4:85331f00
[<803c72f8>] (bpf_prog_free_deferred) from [<802785a0>] (process_one_work+0x1b4/0x4f4 kernel/workqueue.c:3263)
 r7:ddde3d80 r6:83018600 r5:84f7cb8c r4:85331f00
[<802783ec>] (process_one_work) from [<802791e8>] (process_scheduled_works kernel/workqueue.c:3346 [inline])
[<802783ec>] (process_one_work) from [<802791e8>] (worker_thread+0x1fc/0x3d8 kernel/workqueue.c:3427)
 r10:61c88647 r9:83b41800 r8:85331f2c r7:82804d40 r6:ddde3d80 r5:ddde3da0
 r4:85331f00
[<80278fec>] (worker_thread) from [<8028020c>] (kthread+0x12c/0x280 kernel/kthread.c:463)
 r10:00000000 r9:85331f00 r8:80278fec r7:df959e60 r6:85331f80 r5:83b41800
 r4:00000001
[<802800e0>] (kthread) from [<80200114>] (ret_from_fork+0x14/0x20 arch/arm/kernel/entry-common.S:137)
Exception stack(0xe01b9fb0 to 0xe01b9ff8)
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 r5:802800e0
 r4:84e0e300
Future hung task reports are suppressed, see sysctl kernel.hung_task_warnings
INFO: task kworker/1:66:4609 blocked for more than 430 seconds.
      Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/1:66    state:D stack:0     pid:4609  tgid:4609  ppid:2      task_flags:0x4208060 flags:0x00000000
Workqueue: events bpf_prog_free_deferred
Call trace: 
[<81a6441c>] (__schedule) from [<81a653b0>] (__schedule_loop kernel/sched/core.c:7011 [inline])
[<81a6441c>] (__schedule) from [<81a653b0>] (schedule+0x2c/0x130 kernel/sched/core.c:7026)
 r10:e0231d84 r9:00000002 r8:60000113 r7:829171a0 r6:e0231d8c r5:851d3000
 r4:851d3000
[<81a65384>] (schedule) from [<81a65798>] (schedule_preempt_disabled+0x18/0x24 kernel/sched/core.c:7083)
 r5:851d3000 r4:8291719c
[<81a65780>] (schedule_preempt_disabled) from [<81a68348>] (__mutex_lock_common kernel/locking/mutex.c:676 [inline])
[<81a65780>] (schedule_preempt_disabled) from [<81a68348>] (__mutex_lock.constprop.0+0x350/0xa24 kernel/locking/mutex.c:760)
[<81a67ff8>] (__mutex_lock.constprop.0) from [<81a68af0>] (__mutex_lock_slowpath+0x14/0x18 kernel/locking/mutex.c:1049)
 r10:8280c960 r9:00000001 r8:00000000 r7:ffffffff r6:00000000 r5:e0231e08
 r4:00000000
[<81a68adc>] (__mutex_lock_slowpath) from [<81a68b30>] (mutex_lock+0x3c/0x40 kernel/locking/mutex.c:274)
[<81a68af4>] (mutex_lock) from [<804ea37c>] (_vm_unmap_aliases+0x68/0x240 mm/vmalloc.c:2918)
[<804ea314>] (_vm_unmap_aliases) from [<804ee15c>] (vm_reset_perms mm/vmalloc.c:3349 [inline])
[<804ea314>] (_vm_unmap_aliases) from [<804ee15c>] (vfree+0x16c/0x210 mm/vmalloc.c:3428)
 r10:83016170 r9:00000001 r8:00000000 r7:ffffffff r6:00000000 r5:85334fc0
 r4:00000000
[<804edff0>] (vfree) from [<80559088>] (execmem_free+0x30/0x50 mm/execmem.c:503)
 r9:83018605 r8:851d3000 r7:00000000 r6:83018600 r5:00001000 r4:7f02d000
[<80559058>] (execmem_free) from [<803c5fb0>] (bpf_jit_free_exec+0x10/0x14 kernel/bpf/core.c:1052)
 r5:00001000 r4:e00c5000
[<803c5fa0>] (bpf_jit_free_exec) from [<803c6390>] (bpf_jit_binary_free kernel/bpf/core.c:1098 [inline])
[<803c5fa0>] (bpf_jit_free_exec) from [<803c6390>] (bpf_jit_free+0x68/0xe4 kernel/bpf/core.c:1221)
[<803c6328>] (bpf_jit_free) from [<803c7438>] (bpf_prog_free_deferred+0x140/0x158 kernel/bpf/core.c:2898)
 r5:852caf8c r4:85337a00
[<803c72f8>] (bpf_prog_free_deferred) from [<802785a0>] (process_one_work+0x1b4/0x4f4 kernel/workqueue.c:3263)
 r7:ddde3d80 r6:83018600 r5:852caf8c r4:85337a00
[<802783ec>] (process_one_work) from [<802791e8>] (process_scheduled_works kernel/workqueue.c:3346 [inline])
[<802783ec>] (process_one_work) from [<802791e8>] (worker_thread+0x1fc/0x3d8 kernel/workqueue.c:3427)
 r10:61c88647 r9:851d3000 r8:85337a2c r7:82804d40 r6:ddde3d80 r5:ddde3da0
 r4:85337a00
[<80278fec>] (worker_thread) from [<8028020c>] (kthread+0x12c/0x280 kernel/kthread.c:463)
 r10:00000000 r9:85337a00 r8:80278fec r7:e01a1e60 r6:85337a80 r5:851d3000
 r4:00000001
[<802800e0>] (kthread) from [<80200114>] (ret_from_fork+0x14/0x20 arch/arm/kernel/entry-common.S:137)
Exception stack(0xe0231fb0 to 0xe0231ff8)
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 r5:802800e0
 r4:850c7c00
INFO: task kworker/1:66:4609 is blocked on a mutex likely owned by task kworker/1:55:4553.
task:kworker/1:55    state:R  running task     stack:0     pid:4553  tgid:4553  ppid:2      task_flags:0x4208060 flags:0x00000000
Workqueue: events bpf_prog_free_deferred
Call trace: 
[<81a6441c>] (__schedule) from [<81a657e4>] (preempt_schedule_irq+0x40/0xa8 kernel/sched/core.c:7256)
 r10:8280c9b4 r9:83b41800 r8:80200c04 r7:e01b9d54 r6:ffffffff r5:83b41800
 r4:00000000
[<81a657a4>] (preempt_schedule_irq) from [<80200c24>] (svc_preempt+0x8/0x18)
Exception stack(0xe01b9d20 to 0xe01b9d68)
9d20: 9dcc2000 eaf4b000 00000001 80239bf8 7f011000 00000001 82acb1c4 82aca5a0
9d40: 7f011000 eaf4b000 8280c9b4 e01b9d9c e01b9da0 e01b9d70 80230af0 80239c10
9d60: 80000113 ffffffff
 r5:80000113 r4:80239c10
[<80230a8c>] (flush_tlb_kernel_range) from [<804ea140>] (__purge_vmap_area_lazy+0x284/0x458 mm/vmalloc.c:2342)
 r4:82acb1e4
[<804e9ebc>] (__purge_vmap_area_lazy) from [<804ea4f8>] (_vm_unmap_aliases+0x1e4/0x240 mm/vmalloc.c:2957)
 r10:00000000 r9:00000000 r8:00000000 r7:ffffffff r6:e01b9dc0 r5:e01b9e08
 r4:e01b9dc0
[<804ea314>] (_vm_unmap_aliases) from [<804ee15c>] (vm_reset_perms mm/vmalloc.c:3349 [inline])
[<804ea314>] (_vm_unmap_aliases) from [<804ee15c>] (vfree+0x16c/0x210 mm/vmalloc.c:3428)
 r10:83016170 r9:00000001 r8:00000000 r7:ffffffff r6:00000000 r5:853344c0
 r4:00000000
[<804edff0>] (vfree) from [<80559088>] (execmem_free+0x30/0x50 mm/execmem.c:503)
 r9:83018605 r8:83b41800 r7:00000000 r6:83018600 r5:00001000 r4:7f033000
[<80559058>] (execmem_free) from [<803c5fb0>] (bpf_jit_free_exec+0x10/0x14 kernel/bpf/core.c:1052)
 r5:00001000 r4:e01e7000
[<803c5fa0>] (bpf_jit_free_exec) from [<803c6390>] (bpf_jit_binary_free kernel/bpf/core.c:1098 [inline])
[<803c5fa0>] (bpf_jit_free_exec) from [<803c6390>] (bpf_jit_free+0x68/0xe4 kernel/bpf/core.c:1221)
[<803c6328>] (bpf_jit_free) from [<803c7438>] (bpf_prog_free_deferred+0x140/0x158 kernel/bpf/core.c:2898)
 r5:84f7cb8c r4:85331f00
[<803c72f8>] (bpf_prog_free_deferred) from [<802785a0>] (process_one_work+0x1b4/0x4f4 kernel/workqueue.c:3263)
 r7:ddde3d80 r6:83018600 r5:84f7cb8c r4:85331f00
[<802783ec>] (process_one_work) from [<802791e8>] (process_scheduled_works kernel/workqueue.c:3346 [inline])
[<802783ec>] (process_one_work) from [<802791e8>] (worker_thread+0x1fc/0x3d8 kernel/workqueue.c:3427)
 r10:61c88647 r9:83b41800 r8:85331f2c r7:82804d40 r6:ddde3d80 r5:ddde3da0
 r4:85331f00
[<80278fec>] (worker_thread) from [<8028020c>] (kthread+0x12c/0x280 kernel/kthread.c:463)
 r10:00000000 r9:85331f00 r8:80278fec r7:df959e60 r6:85331f80 r5:83b41800
 r4:00000001
[<802800e0>] (kthread) from [<80200114>] (ret_from_fork+0x14/0x20 arch/arm/kernel/entry-common.S:137)
Exception stack(0xe01b9fb0 to 0xe01b9ff8)
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 r5:802800e0
 r4:84e0e300
Future hung task reports are suppressed, see sysctl kernel.hung_task_warnings
INFO: task kworker/1:68:4614 blocked for more than 430 seconds.
      Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/1:68    state:D stack:0     pid:4614  tgid:4614  ppid:2      task_flags:0x4208060 flags:0x00000000
Workqueue: events bpf_prog_free_deferred
Call trace: 
[<81a6441c>] (__schedule) from [<81a653b0>] (__schedule_loop kernel/sched/core.c:7011 [inline])
[<81a6441c>] (__schedule) from [<81a653b0>] (schedule+0x2c/0x130 kernel/sched/core.c:7026)
 r10:e42edd84 r9:00000002 r8:60000013 r7:829171a0 r6:e42edd8c r5:851d6000
 r4:851d6000
[<81a65384>] (schedule) from [<81a65798>] (schedule_preempt_disabled+0x18/0x24 kernel/sched/core.c:7083)
 r5:851d6000 r4:8291719c
[<81a65780>] (schedule_preempt_disabled) from [<81a68348>] (__mutex_lock_common kernel/locking/mutex.c:676 [inline])
[<81a65780>] (schedule_preempt_disabled) from [<81a68348>] (__mutex_lock.constprop.0+0x350/0xa24 kernel/locking/mutex.c:760)
[<81a67ff8>] (__mutex_lock.constprop.0) from [<81a68af0>] (__mutex_lock_slowpath+0x14/0x18 kernel/locking/mutex.c:1049)
 r10:8280c960 r9:00000001 r8:00000000 r7:ffffffff r6:00000000 r5:e42ede08
 r4:00000000
[<81a68adc>] (__mutex_lock_slowpath) from [<81a68b30>] (mutex_lock+0x3c/0x40 kernel/locking/mutex.c:274)
[<81a68af4>] (mutex_lock) from [<804ea37c>] (_vm_unmap_aliases+0x68/0x240 mm/vmalloc.c:2918)
[<804ea314>] (_vm_unmap_aliases) from [<804ee15c>] (vm_reset_perms mm/vmalloc.c:3349 [inline])
[<804ea314>] (_vm_unmap_aliases) from [<804ee15c>] (vfree+0x16c/0x210 mm/vmalloc.c:3428)
 r10:83016170 r9:00000001 r8:00000000 r7:ffffffff r6:00000000 r5:8533d2c0
 r4:00000000
[<804edff0>] (vfree) from [<80559088>] (execmem_free+0x30/0x50 mm/execmem.c:503)
 r9:83018605 r8:851d6000 r7:00000000 r6:83018600 r5:00001000 r4:7f00f000
[<80559058>] (execmem_free) from [<803c5fb0>] (bpf_jit_free_exec+0x10/0x14 kernel/bpf/core.c:1052)
 r5:00001000 r4:dfb69000
[<803c5fa0>] (bpf_jit_free_exec) from [<803c6390>] (bpf_jit_binary_free kernel/bpf/core.c:1098 [inline])
[<803c5fa0>] (bpf_jit_free_exec) from [<803c6390>] (bpf_jit_free+0x68/0xe4 kernel/bpf/core.c:1221)
[<803c6328>] (bpf_jit_free) from [<803c7438>] (bpf_prog_free_deferred+0x140/0x158 kernel/bpf/core.c:2898)
 r5:852a978c r4:85337e00
[<803c72f8>] (bpf_prog_free_deferred) from [<802785a0>] (process_one_work+0x1b4/0x4f4 kernel/workqueue.c:3263)
 r7:ddde3d80 r6:83018600 r5:852a978c r4:85337e00
[<802783ec>] (process_one_work) from [<802791e8>] (process_scheduled_works kernel/workqueue.c:3346 [inline])
[<802783ec>] (process_one_work) from [<802791e8>] (worker_thread+0x1fc/0x3d8 kernel/workqueue.c:3427)
 r10:61c88647 r9:851d6000 r8:85337e2c r7:82804d40 r6:ddde3d80 r5:ddde3da0
 r4:85337e00
[<80278fec>] (worker_thread) from [<8028020c>] (kthread+0x12c/0x280 kernel/kthread.c:463)
 r10:00000000 r9:85337e00 r8:80278fec r7:ea4e9e60 r6:85337e80 r5:851d6000
 r4:00000001
[<802800e0>] (kthread) from [<80200114>] (ret_from_fork+0x14/0x20 arch/arm/kernel/entry-common.S:137)
Exception stack(0xe42edfb0 to 0xe42edff8)
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 r5:802800e0
 r4:8533d180
INFO: task kworker/1:68:4614 is blocked on a mutex likely owned by task kworker/1:55:4553.
task:kworker/1:55    state:R  running task     stack:0     pid:4553  tgid:4553  ppid:2      task_flags:0x4208060 flags:0x00000000
Workqueue: events bpf_prog_free_deferred
Call trace: 
[<81a6441c>] (__schedule) from [<81a657e4>] (preempt_schedule_irq+0x40/0xa8 kernel/sched/core.c:7256)
 r10:8280c9b4 r9:83b41800 r8:80200c04 r7:e01b9d54 r6:ffffffff r5:83b41800
 r4:00000000
[<81a657a4>] (preempt_schedule_irq) from [<80200c24>] (svc_preempt+0x8/0x18)
Exception stack(0xe01b9d20 to 0xe01b9d68)
9d20: 9dcc2000 eaf4b000 00000001 80239bf8 7f011000 00000001 82acb1c4 82aca5a0
9d40: 7f011000 eaf4b000 8280c9b4 e01b9d9c e01b9da0 e01b9d70 80230af0 80239c10
9d60: 80000113 ffffffff
 r5:80000113 r4:80239c10
[<80230a8c>] (flush_tlb_kernel_range) from [<804ea140>] (__purge_vmap_area_lazy+0x284/0x458 mm/vmalloc.c:2342)
 r4:82acb1e4
[<804e9ebc>] (__purge_vmap_area_lazy) from [<804ea4f8>] (_vm_unmap_aliases+0x1e4/0x240 mm/vmalloc.c:2957)
 r10:00000000 r9:00000000 r8:00000000 r7:ffffffff r6:e01b9dc0 r5:e01b9e08
 r4:e01b9dc0
[<804ea314>] (_vm_unmap_aliases) from [<804ee15c>] (vm_reset_perms mm/vmalloc.c:3349 [inline])
[<804ea314>] (_vm_unmap_aliases) from [<804ee15c>] (vfree+0x16c/0x210 mm/vmalloc.c:3428)
 r10:83016170 r9:00000001 r8:00000000 r7:ffffffff r6:00000000 r5:853344c0
 r4:00000000
[<804edff0>] (vfree) from [<80559088>] (execmem_free+0x30/0x50 mm/execmem.c:503)
 r9:83018605 r8:83b41800 r7:00000000 r6:83018600 r5:00001000 r4:7f033000
[<80559058>] (execmem_free) from [<803c5fb0>] (bpf_jit_free_exec+0x10/0x14 kernel/bpf/core.c:1052)
 r5:00001000 r4:e01e7000
[<803c5fa0>] (bpf_jit_free_exec) from [<803c6390>] (bpf_jit_binary_free kernel/bpf/core.c:1098 [inline])
[<803c5fa0>] (bpf_jit_free_exec) from [<803c6390>] (bpf_jit_free+0x68/0xe4 kernel/bpf/core.c:1221)
[<803c6328>] (bpf_jit_free) from [<803c7438>] (bpf_prog_free_deferred+0x140/0x158 kernel/bpf/core.c:2898)
 r5:84f7cb8c r4:85331f00
[<803c72f8>] (bpf_prog_free_deferred) from [<802785a0>] (process_one_work+0x1b4/0x4f4 kernel/workqueue.c:3263)
 r7:ddde3d80 r6:83018600 r5:84f7cb8c r4:85331f00
[<802783ec>] (process_one_work) from [<802791e8>] (process_scheduled_works kernel/workqueue.c:3346 [inline])
[<802783ec>] (process_one_work) from [<802791e8>] (worker_thread+0x1fc/0x3d8 kernel/workqueue.c:3427)
 r10:61c88647 r9:83b41800 r8:85331f2c r7:82804d40 r6:ddde3d80 r5:ddde3da0
 r4:85331f00
[<80278fec>] (worker_thread) from [<8028020c>] (kthread+0x12c/0x280 kernel/kthread.c:463)
 r10:00000000 r9:85331f00 r8:80278fec r7:df959e60 r6:85331f80 r5:83b41800
 r4:00000001
[<802800e0>] (kthread) from [<80200114>] (ret_from_fork+0x14/0x20 arch/arm/kernel/entry-common.S:137)
Exception stack(0xe01b9fb0 to 0xe01b9ff8)
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 r5:802800e0
 r4:84e0e300
Future hung task reports are suppressed, see sysctl kernel.hung_task_warnings
INFO: task kworker/1:69:4619 blocked for more than 430 seconds.
      Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/1:69    state:D stack:0     pid:4619  tgid:4619  ppid:2      task_flags:0x4208060 flags:0x00000000
Workqueue: events bpf_prog_free_deferred
Call trace: 
[<81a6441c>] (__schedule) from [<81a653b0>] (__schedule_loop kernel/sched/core.c:7011 [inline])
[<81a6441c>] (__schedule) from [<81a653b0>] (schedule+0x2c/0x130 kernel/sched/core.c:7026)
 r10:e42d1d84 r9:00000002 r8:60000013 r7:829171a0 r6:e42d1d8c r5:851d4800
 r4:851d4800
[<81a65384>] (schedule) from [<81a65798>] (schedule_preempt_disabled+0x18/0x24 kernel/sched/core.c:7083)
 r5:851d4800 r4:8291719c
[<81a65780>] (schedule_preempt_disabled) from [<81a68348>] (__mutex_lock_common kernel/locking/mutex.c:676 [inline])
[<81a65780>] (schedule_preempt_disabled) from [<81a68348>] (__mutex_lock.constprop.0+0x350/0xa24 kernel/locking/mutex.c:760)
[<81a67ff8>] (__mutex_lock.constprop.0) from [<81a68af0>] (__mutex_lock_slowpath+0x14/0x18 kernel/locking/mutex.c:1049)
 r10:8280c960 r9:00000001 r8:00000000 r7:ffffffff r6:00000000 r5:e42d1e08
 r4:00000000
[<81a68adc>] (__mutex_lock_slowpath) from [<81a68b30>] (mutex_lock+0x3c/0x40 kernel/locking/mutex.c:274)
[<81a68af4>] (mutex_lock) from [<804ea37c>] (_vm_unmap_aliases+0x68/0x240 mm/vmalloc.c:2918)
[<804ea314>] (_vm_unmap_aliases) from [<804ee15c>] (vm_reset_perms mm/vmalloc.c:3349 [inline])
[<804ea314>] (_vm_unmap_aliases) from [<804ee15c>] (vfree+0x16c/0x210 mm/vmalloc.c:3428)
 r10:83016170 r9:00000001 r8:00000000 r7:ffffffff r6:00000000 r5:849604c0
 r4:00000000
[<804edff0>] (vfree) from [<80559088>] (execmem_free+0x30/0x50 mm/execmem.c:503)
 r9:83018605 r8:851d4800 r7:00000000 r6:83018600 r5:00001000 r4:7f011000
[<80559058>] (execmem_free) from [<803c5fb0>] (bpf_jit_free_exec+0x10/0x14 kernel/bpf/core.c:1052)
 r5:00001000 r4:dfc4f000
[<803c5fa0>] (bpf_jit_free_exec) from [<803c6390>] (bpf_jit_binary_free kernel/bpf/core.c:1098 [inline])
[<803c5fa0>] (bpf_jit_free_exec) from [<803c6390>] (bpf_jit_free+0x68/0xe4 kernel/bpf/core.c:1221)
[<803c6328>] (bpf_jit_free) from [<803c7438>] (bpf_prog_free_deferred+0x140/0x158 kernel/bpf/core.c:2898)
 r5:852a9b8c r4:85340080
[<803c72f8>] (bpf_prog_free_deferred) from [<802785a0>] (process_one_work+0x1b4/0x4f4 kernel/workqueue.c:3263)
 r7:ddde3d80 r6:83018600 r5:852a9b8c r4:85340080
[<802783ec>] (process_one_work) from [<802791e8>] (process_scheduled_works kernel/workqueue.c:3346 [inline])
[<802783ec>] (process_one_work) from [<802791e8>] (worker_thread+0x1fc/0x3d8 kernel/workqueue.c:3427)
 r10:61c88647 r9:851d4800 r8:853400ac r7:82804d40 r6:ddde3d80 r5:ddde3da0
 r4:85340080
[<80278fec>] (worker_thread) from [<8028020c>] (kthread+0x12c/0x280 kernel/kthread.c:463)
 r10:00000000 r9:85340080 r8:80278fec r7:e0255e60 r6:85340100 r5:851d4800
 r4:00000001
[<802800e0>] (kthread) from [<80200114>] (ret_from_fork+0x14/0x20 arch/arm/kernel/entry-common.S:137)
Exception stack(0xe42d1fb0 to 0xe42d1ff8)
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 r5:802800e0
 r4:8533de40
INFO: task kworker/1:69:4619 is blocked on a mutex likely owned by task kworker/1:55:4553.
task:kworker/1:55    state:R  running task     stack:0     pid:4553  tgid:4553  ppid:2      task_flags:0x4208060 flags:0x00000000
Workqueue: events bpf_prog_free_deferred
Call trace: 
[<81a6441c>] (__schedule) from [<81a657e4>] (preempt_schedule_irq+0x40/0xa8 kernel/sched/core.c:7256)
 r10:8280c9b4 r9:83b41800 r8:80200c04 r7:e01b9d54 r6:ffffffff r5:83b41800
 r4:00000000
[<81a657a4>] (preempt_schedule_irq) from [<80200c24>] (svc_preempt+0x8/0x18)
Exception stack(0xe01b9d20 to 0xe01b9d68)
9d20: 9dcc2000 eaf4b000 00000001 80239bf8 7f011000 00000001 82acb1c4 82aca5a0
9d40: 7f011000 eaf4b000 8280c9b4 e01b9d9c e01b9da0 e01b9d70 80230af0 80239c10
9d60: 80000113 ffffffff
 r5:80000113 r4:80239c10
[<80230a8c>] (flush_tlb_kernel_range) from [<804ea140>] (__purge_vmap_area_lazy+0x284/0x458 mm/vmalloc.c:2342)
 r4:82acb1e4
[<804e9ebc>] (__purge_vmap_area_lazy) from [<804ea4f8>] (_vm_unmap_aliases+0x1e4/0x240 mm/vmalloc.c:2957)
 r10:00000000 r9:00000000 r8:00000000 r7:ffffffff r6:e01b9dc0 r5:e01b9e08
 r4:e01b9dc0
[<804ea314>] (_vm_unmap_aliases) from [<804ee15c>] (vm_reset_perms mm/vmalloc.c:3349 [inline])
[<804ea314>] (_vm_unmap_aliases) from [<804ee15c>] (vfree+0x16c/0x210 mm/vmalloc.c:3428)
 r10:83016170 r9:00000001 r8:00000000 r7:ffffffff r6:00000000 r5:853344c0
 r4:00000000
[<804edff0>] (vfree) from [<80559088>] (execmem_free+0x30/0x50 mm/execmem.c:503)
 r9:83018605 r8:83b41800 r7:00000000 r6:83018600 r5:00001000 r4:7f033000
[<80559058>] (execmem_free) from [<803c5fb0>] (bpf_jit_free_exec+0x10/0x14 kernel/bpf/core.c:1052)
 r5:00001000 r4:e01e7000
[<803c5fa0>] (bpf_jit_free_exec) from [<803c6390>] (bpf_jit_binary_free kernel/bpf/core.c:1098 [inline])
[<803c5fa0>] (bpf_jit_free_exec) from [<803c6390>] (bpf_jit_free+0x68/0xe4 kernel/bpf/core.c:1221)
[<803c6328>] (bpf_jit_free) from [<803c7438>] (bpf_prog_free_deferred+0x140/0x158 kernel/bpf/core.c:2898)
 r5:84f7cb8c r4:85331f00
[<803c72f8>] (bpf_prog_free_deferred) from [<802785a0>] (process_one_work+0x1b4/0x4f4 kernel/workqueue.c:3263)
 r7:ddde3d80 r6:83018600 r5:84f7cb8c r4:85331f00
[<802783ec>] (process_one_work) from [<802791e8>] (process_scheduled_works kernel/workqueue.c:3346 [inline])
[<802783ec>] (process_one_work) from [<802791e8>] (worker_thread+0x1fc/0x3d8 kernel/workqueue.c:3427)
 r10:61c88647 r9:83b41800 r8:85331f2c r7:82804d40 r6:ddde3d80 r5:ddde3da0
 r4:85331f00
[<80278fec>] (worker_thread) from [<8028020c>] (kthread+0x12c/0x280 kernel/kthread.c:463)
 r10:00000000 r9:85331f00 r8:80278fec r7:df959e60 r6:85331f80 r5:83b41800
 r4:00000001
[<802800e0>] (kthread) from [<80200114>] (ret_from_fork+0x14/0x20 arch/arm/kernel/entry-common.S:137)
Exception stack(0xe01b9fb0 to 0xe01b9ff8)
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 r5:802800e0
 r4:84e0e300
Future hung task reports are suppressed, see sysctl kernel.hung_task_warnings
INFO: task kworker/1:70:4622 blocked for more than 430 seconds.
      Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/1:70    state:D stack:0     pid:4622  tgid:4622  ppid:2      task_flags:0x4208060 flags:0x00000000
Workqueue: events bpf_prog_free_deferred
Call trace: 
[<81a6441c>] (__schedule) from [<81a653b0>] (__schedule_loop kernel/sched/core.c:7011 [inline])
[<81a6441c>] (__schedule) from [<81a653b0>] (schedule+0x2c/0x130 kernel/sched/core.c:7026)
 r10:e01c1d84 r9:00000002 r8:60000013 r7:829171a0 r6:e01c1d8c r5:851d6c00
 r4:851d6c00
[<81a65384>] (schedule) from [<81a65798>] (schedule_preempt_disabled+0x18/0x24 kernel/sched/core.c:7083)
 r5:851d6c00 r4:8291719c
[<81a65780>] (schedule_preempt_disabled) from [<81a68348>] (__mutex_lock_common kernel/locking/mutex.c:676 [inline])
[<81a65780>] (schedule_preempt_disabled) from [<81a68348>] (__mutex_lock.constprop.0+0x350/0xa24 kernel/locking/mutex.c:760)
[<81a67ff8>] (__mutex_lock.constprop.0) from [<81a68af0>] (__mutex_lock_slowpath+0x14/0x18 kernel/locking/mutex.c:1049)
 r10:8280c960 r9:00000001 r8:00000000 r7:ffffffff r6:00000000 r5:e01c1e08
 r4:00000000
[<81a68adc>] (__mutex_lock_slowpath) from [<81a68b30>] (mutex_lock+0x3c/0x40 kernel/locking/mutex.c:274)
[<81a68af4>] (mutex_lock) from [<804ea37c>] (_vm_unmap_aliases+0x68/0x240 mm/vmalloc.c:2918)
[<804ea314>] (_vm_unmap_aliases) from [<804ee15c>] (vm_reset_perms mm/vmalloc.c:3349 [inline])
[<804ea314>] (_vm_unmap_aliases) from [<804ee15c>] (vfree+0x16c/0x210 mm/vmalloc.c:3428)
 r10:83016170 r9:00000001 r8:00000000 r7:ffffffff r6:00000000 r5:8533dac0
 r4:00000000
[<804edff0>] (vfree) from [<80559088>] (execmem_free+0x30/0x50 mm/execmem.c:503)
 r9:83018605 r8:851d6c00 r7:00000000 r6:83018600 r5:00001000 r4:7f02f000
[<80559058>] (execmem_free) from [<803c5fb0>] (bpf_jit_free_exec+0x10/0x14 kernel/bpf/core.c:1052)
 r5:00001000 r4:e0033000
[<803c5fa0>] (bpf_jit_free_exec) from [<803c6390>] (bpf_jit_binary_free kernel/bpf/core.c:1098 [inline])
[<803c5fa0>] (bpf_jit_free_exec) from [<803c6390>] (bpf_jit_free+0x68/0xe4 kernel/bpf/core.c:1221)
[<803c6328>] (bpf_jit_free) from [<803c7438>] (bpf_prog_free_deferred+0x140/0x158 kernel/bpf/core.c:2898)
 r5:852a938c r4:85340300
[<803c72f8>] (bpf_prog_free_deferred) from [<802785a0>] (process_one_work+0x1b4/0x4f4 kernel/workqueue.c:3263)
 r7:ddde3d80 r6:83018600 r5:852a938c r4:85340300
[<802783ec>] (process_one_work) from [<802791e8>] (process_scheduled_works kernel/workqueue.c:3346 [inline])
[<802783ec>] (process_one_work) from [<802791e8>] (worker_thread+0x1fc/0x3d8 kernel/workqueue.c:3427)
 r10:61c88647 r9:851d6c00 r8:8534032c r7:82804d40 r6:ddde3d80 r5:ddde3da0
 r4:85340300
[<80278fec>] (worker_thread) from [<8028020c>] (kthread+0x12c/0x280 kernel/kthread.c:463)
 r10:00000000 r9:85340300 r8:80278fec r7:e0255e60 r6:85340380 r5:851d6c00
 r4:00000001
[<802800e0>] (kthread) from [<80200114>] (ret_from_fork+0x14/0x20 arch/arm/kernel/entry-common.S:137)
Exception stack(0xe01c1fb0 to 0xe01c1ff8)
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 r5:802800e0
 r4:8533d280
INFO: task kworker/1:70:4622 is blocked on a mutex likely owned by task kworker/1:55:4553.
task:kworker/1:55    state:R  running task     stack:0     pid:4553  tgid:4553  ppid:2      task_flags:0x4208060 flags:0x00000000
Workqueue: events bpf_prog_free_deferred
Call trace: 
[<81a6441c>] (__schedule) from [<81a657e4>] (preempt_schedule_irq+0x40/0xa8 kernel/sched/core.c:7256)
 r10:8280c9b4 r9:83b41800 r8:80200c04 r7:e01b9d54 r6:ffffffff r5:83b41800
 r4:00000000
[<81a657a4>] (preempt_schedule_irq) from [<80200c24>] (svc_preempt+0x8/0x18)
Exception stack(0xe01b9d20 to 0xe01b9d68)
9d20: 9dcc2000 eaf4b000 00000001 80239bf8 7f011000 00000001 82acb1c4 82aca5a0
9d40: 7f011000 eaf4b000 8280c9b4 e01b9d9c e01b9da0 e01b9d70 80230af0 80239c10
9d60: 80000113 ffffffff
 r5:80000113 r4:80239c10
[<80230a8c>] (flush_tlb_kernel_range) from [<804ea140>] (__purge_vmap_area_lazy+0x284/0x458 mm/vmalloc.c:2342)
 r4:82acb1e4
[<804e9ebc>] (__purge_vmap_area_lazy) from [<804ea4f8>] (_vm_unmap_aliases+0x1e4/0x240 mm/vmalloc.c:2957)
 r10:00000000 r9:00000000 r8:00000000 r7:ffffffff r6:e01b9dc0 r5:e01b9e08
 r4:e01b9dc0
[<804ea314>] (_vm_unmap_aliases) from [<804ee15c>] (vm_reset_perms mm/vmalloc.c:3349 [inline])
[<804ea314>] (_vm_unmap_aliases) from [<804ee15c>] (vfree+0x16c/0x210 mm/vmalloc.c:3428)
 r10:83016170 r9:00000001 r8:00000000 r7:ffffffff r6:00000000 r5:853344c0
 r4:00000000
[<804edff0>] (vfree) from [<80559088>] (execmem_free+0x30/0x50 mm/execmem.c:503)
 r9:83018605 r8:83b41800 r7:00000000 r6:83018600 r5:00001000 r4:7f033000
[<80559058>] (execmem_free) from [<803c5fb0>] (bpf_jit_free_exec+0x10/0x14 kernel/bpf/core.c:1052)
 r5:00001000 r4:e01e7000
[<803c5fa0>] (bpf_jit_free_exec) from [<803c6390>] (bpf_jit_binary_free kernel/bpf/core.c:1098 [inline])
[<803c5fa0>] (bpf_jit_free_exec) from [<803c6390>] (bpf_jit_free+0x68/0xe4 kernel/bpf/core.c:1221)
[<803c6328>] (bpf_jit_free) from [<803c7438>] (bpf_prog_free_deferred+0x140/0x158 kernel/bpf/core.c:2898)
 r5:84f7cb8c r4:85331f00
[<803c72f8>] (bpf_prog_free_deferred) from [<802785a0>] (process_one_work+0x1b4/0x4f4 kernel/workqueue.c:3263)
 r7:ddde3d80 r6:83018600 r5:84f7cb8c r4:85331f00
[<802783ec>] (process_one_work) from [<802791e8>] (process_scheduled_works kernel/workqueue.c:3346 [inline])
[<802783ec>] (process_one_work) from [<802791e8>] (worker_thread+0x1fc/0x3d8 kernel/workqueue.c:3427)
 r10:61c88647 r9:83b41800 r8:85331f2c r7:82804d40 r6:ddde3d80 r5:ddde3da0
 r4:85331f00
[<80278fec>] (worker_thread) from [<8028020c>] (kthread+0x12c/0x280 kernel/kthread.c:463)
 r10:00000000 r9:85331f00 r8:80278fec r7:df959e60 r6:85331f80 r5:83b41800
 r4:00000001
[<802800e0>] (kthread) from [<80200114>] (ret_from_fork+0x14/0x20 arch/arm/kernel/entry-common.S:137)
Exception stack(0xe01b9fb0 to 0xe01b9ff8)
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 r5:802800e0
 r4:84e0e300
Future hung task reports are suppressed, see sysctl kernel.hung_task_warnings
INFO: task kworker/1:72:4628 blocked for more than 430 seconds.
      Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/1:72    state:D stack:0     pid:4628  tgid:4628  ppid:2      task_flags:0x4208060 flags:0x00000000
Workqueue: events bpf_prog_free_deferred
Call trace: 
[<81a6441c>] (__schedule) from [<81a653b0>] (__schedule_loop kernel/sched/core.c:7011 [inline])
[<81a6441c>] (__schedule) from [<81a653b0>] (schedule+0x2c/0x130 kernel/sched/core.c:7026)
 r10:e8315d84 r9:00000002 r8:60000013 r7:829171a0 r6:e8315d8c r5:83884800
 r4:83884800
[<81a65384>] (schedule) from [<81a65798>] (schedule_preempt_disabled+0x18/0x24 kernel/sched/core.c:7083)
 r5:83884800 r4:8291719c
[<81a65780>] (schedule_preempt_disabled) from [<81a68348>] (__mutex_lock_common kernel/locking/mutex.c:676 [inline])
[<81a65780>] (schedule_preempt_disabled) from [<81a68348>] (__mutex_lock.constprop.0+0x350/0xa24 kernel/locking/mutex.c:760)
[<81a67ff8>] (__mutex_lock.constprop.0) from [<81a68af0>] (__mutex_lock_slowpath+0x14/0x18 kernel/locking/mutex.c:1049)
 r10:8280c960 r9:00000001 r8:00000000 r7:ffffffff r6:00000000 r5:e8315e08
 r4:00000000
[<81a68adc>] (__mutex_lock_slowpath) from [<81a68b30>] (mutex_lock+0x3c/0x40 kernel/locking/mutex.c:274)
[<81a68af4>] (mutex_lock) from [<804ea37c>] (_vm_unmap_aliases+0x68/0x240 mm/vmalloc.c:2918)
[<804ea314>] (_vm_unmap_aliases) from [<804ee15c>] (vm_reset_perms mm/vmalloc.c:3349 [inline])
[<804ea314>] (_vm_unmap_aliases) from [<804ee15c>] (vfree+0x16c/0x210 mm/vmalloc.c:3428)
 r10:83016170 r9:00000001 r8:00000000 r7:ffffffff r6:00000000 r5:85341980
 r4:00000000
[<804edff0>] (vfree) from [<80559088>] (execmem_free+0x30/0x50 mm/execmem.c:503)
 r9:83018605 r8:83884800 r7:00000000 r6:83018600 r5:00001000 r4:7f02b000
[<80559058>] (execmem_free) from [<803c5fb0>] (bpf_jit_free_exec+0x10/0x14 kernel/bpf/core.c:1052)
 r5:00001000 r4:dfa9b000
[<803c5fa0>] (bpf_jit_free_exec) from [<803c6390>] (bpf_jit_binary_free kernel/bpf/core.c:1098 [inline])
[<803c5fa0>] (bpf_jit_free_exec) from [<803c6390>] (bpf_jit_free+0x68/0xe4 kernel/bpf/core.c:1221)
[<803c6328>] (bpf_jit_free) from [<803c7438>] (bpf_prog_free_deferred+0x140/0x158 kernel/bpf/core.c:2898)
 r5:852ab78c r4:85340600
[<803c72f8>] (bpf_prog_free_deferred) from [<802785a0>] (process_one_work+0x1b4/0x4f4 kernel/workqueue.c:3263)
 r7:ddde3d80 r6:83018600 r5:852ab78c r4:85340600
[<802783ec>] (process_one_work) from [<802791e8>] (process_scheduled_works kernel/workqueue.c:3346 [inline])
[<802783ec>] (process_one_work) from [<802791e8>] (worker_thread+0x1fc/0x3d8 kernel/workqueue.c:3427)
 r10:61c88647 r9:83884800 r8:8534062c r7:82804d40 r6:ddde3d80 r5:ddde3da0
 r4:85340600
[<80278fec>] (worker_thread) from [<8028020c>] (kthread+0x12c/0x280 kernel/kthread.c:463)
 r10:00000000 r9:85340600 r8:80278fec r7:e0255e60 r6:85340680 r5:83884800
 r4:00000001
[<802800e0>] (kthread) from [<80200114>] (ret_from_fork+0x14/0x20 arch/arm/kernel/entry-common.S:137)
Exception stack(0xe8315fb0 to 0xe8315ff8)
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 r5:802800e0
 r4:85341580
INFO: task kworker/1:72:4628 is blocked on a mutex likely owned by task kworker/1:55:4553.
task:kworker/1:55    state:R  running task     stack:0     pid:4553  tgid:4553  ppid:2      task_flags:0x4208060 flags:0x00000000
Workqueue: events bpf_prog_free_deferred
Call trace: 
[<81a6441c>] (__schedule) from [<81a657e4>] (preempt_schedule_irq+0x40/0xa8 kernel/sched/core.c:7256)
 r10:8280c9b4 r9:83b41800 r8:80200c04 r7:e01b9d54 r6:ffffffff r5:83b41800
 r4:00000000
[<81a657a4>] (preempt_schedule_irq) from [<80200c24>] (svc_preempt+0x8/0x18)
Exception stack(0xe01b9d20 to 0xe01b9d68)
9d20: 9dcc2000 eaf4b000 00000001 80239bf8 7f011000 00000001 82acb1c4 82aca5a0
9d40: 7f011000 eaf4b000 8280c9b4 e01b9d9c e01b9da0 e01b9d70 80230af0 80239c10
9d60: 80000113 ffffffff
 r5:80000113 r4:80239c10
[<80230a8c>] (flush_tlb_kernel_range) from [<804ea140>] (__purge_vmap_area_lazy+0x284/0x458 mm/vmalloc.c:2342)
 r4:82acb1e4
[<804e9ebc>] (__purge_vmap_area_lazy) from [<804ea4f8>] (_vm_unmap_aliases+0x1e4/0x240 mm/vmalloc.c:2957)
 r10:00000000 r9:00000000 r8:00000000 r7:ffffffff r6:e01b9dc0 r5:e01b9e08
 r4:e01b9dc0
[<804ea314>] (_vm_unmap_aliases) from [<804ee15c>] (vm_reset_perms mm/vmalloc.c:3349 [inline])
[<804ea314>] (_vm_unmap_aliases) from [<804ee15c>] (vfree+0x16c/0x210 mm/vmalloc.c:3428)
 r10:83016170 r9:00000001 r8:00000000 r7:ffffffff r6:00000000 r5:853344c0
 r4:00000000
[<804edff0>] (vfree) from [<80559088>] (execmem_free+0x30/0x50 mm/execmem.c:503)
 r9:83018605 r8:83b41800 r7:00000000 r6:83018600 r5:00001000 r4:7f033000
[<80559058>] (execmem_free) from [<803c5fb0>] (bpf_jit_free_exec+0x10/0x14 kernel/bpf/core.c:1052)
 r5:00001000 r4:e01e7000
[<803c5fa0>] (bpf_jit_free_exec) from [<803c6390>] (bpf_jit_binary_free kernel/bpf/core.c:1098 [inline])
[<803c5fa0>] (bpf_jit_free_exec) from [<803c6390>] (bpf_jit_free+0x68/0xe4 kernel/bpf/core.c:1221)
[<803c6328>] (bpf_jit_free) from [<803c7438>] (bpf_prog_free_deferred+0x140/0x158 kernel/bpf/core.c:2898)
 r5:84f7cb8c r4:85331f00
[<803c72f8>] (bpf_prog_free_deferred) from [<802785a0>] (process_one_work+0x1b4/0x4f4 kernel/workqueue.c:3263)
 r7:ddde3d80 r6:83018600 r5:84f7cb8c r4:85331f00
[<802783ec>] (process_one_work) from [<802791e8>] (process_scheduled_works kernel/workqueue.c:3346 [inline])
[<802783ec>] (process_one_work) from [<802791e8>] (worker_thread+0x1fc/0x3d8 kernel/workqueue.c:3427)
 r10:61c88647 r9:83b41800 r8:85331f2c r7:82804d40 r6:ddde3d80 r5:ddde3da0
 r4:85331f00
[<80278fec>] (worker_thread) from [<8028020c>] (kthread+0x12c/0x280 kernel/kthread.c:463)
 r10:00000000 r9:85331f00 r8:80278fec r7:df959e60 r6:85331f80 r5:83b41800
 r4:00000001
[<802800e0>] (kthread) from [<80200114>] (ret_from_fork+0x14/0x20 arch/arm/kernel/entry-common.S:137)
Exception stack(0xe01b9fb0 to 0xe01b9ff8)
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 r5:802800e0
 r4:84e0e300
Future hung task reports are suppressed, see sysctl kernel.hung_task_warnings
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 30 Comm: khungtaskd Not tainted syzkaller #0 PREEMPT 
Hardware name: ARM-Versatile Express
Call trace: 
[<80201a24>] (dump_backtrace) from [<80201b20>] (show_stack+0x18/0x1c arch/arm/kernel/traps.c:257)
 r7:00000000 r6:000d0113 r5:600d0193 r4:8225274c
[<80201b08>] (show_stack) from [<8021f8f8>] (__dump_stack lib/dump_stack.c:94 [inline])
[<80201b08>] (show_stack) from [<8021f8f8>] (dump_stack_lvl+0x70/0x7c lib/dump_stack.c:120)
[<8021f888>] (dump_stack_lvl) from [<8021f91c>] (dump_stack+0x18/0x1c lib/dump_stack.c:129)
 r5:00000000 r4:00000001
[<8021f904>] (dump_stack) from [<81a4e034>] (nmi_cpu_backtrace+0x160/0x17c lib/nmi_backtrace.c:113)
[<81a4ded4>] (nmi_cpu_backtrace) from [<81a4e180>] (nmi_trigger_cpumask_backtrace+0x130/0x1d8 lib/nmi_backtrace.c:62)
 r7:00000000 r6:8280c690 r5:8281ae34 r4:ffffffff
[<81a4e050>] (nmi_trigger_cpumask_backtrace) from [<802304fc>] (arch_trigger_cpumask_backtrace+0x18/0x1c arch/arm/kernel/smp.c:852)
 r9:8281ba28 r8:8280c810 r7:0000b4f2 r6:00007cb1 r5:82abf7d4 r4:85a83c0c
[<802304e4>] (arch_trigger_cpumask_backtrace) from [<8037faf8>] (trigger_all_cpu_backtrace include/linux/nmi.h:160 [inline])
[<802304e4>] (arch_trigger_cpumask_backtrace) from [<8037faf8>] (check_hung_uninterruptible_tasks kernel/hung_task.c:332 [inline])
[<802304e4>] (arch_trigger_cpumask_backtrace) from [<8037faf8>] (watchdog+0x5d0/0x850 kernel/hung_task.c:495)
[<8037f528>] (watchdog) from [<8028020c>] (kthread+0x12c/0x280 kernel/kthread.c:463)
 r10:00000000 r9:00000000 r8:8037f528 r7:83329100 r6:83329100 r5:8321e000
 r4:00000001
[<802800e0>] (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 r5:802800e0
 r4:832c0ac0
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 2824 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 : [<81a6e284>]    lr : [<80a8f5a8>]    psr: 60000113
sp : eb0a5eb0  ip : eb0a5ec0  fp : eb0a5ebc
r10: 82959594  r9 : 00000001  r8 : 00000000
r7 : 00000117  r6 : 829594f8  r5 : 00000000  r4 : 00000001
r3 : 000007dd  r2 : 00000000  r1 : 60000113  r0 : 83f9e840
Flags: nZCv  IRQs on  FIQs on  Mode SVC_32  ISA ARM  Segment none
Control: 30c5387d  Table: 848c9a00  DAC: 00000000
Call trace: 
[<81a6e25c>] (_raw_spin_unlock_irqrestore) from [<80a8f5a8>] (spin_unlock_irqrestore include/linux/spinlock.h:406 [inline])
[<81a6e25c>] (_raw_spin_unlock_irqrestore) from [<80a8f5a8>] (__uart_port_unlock_irqrestore include/linux/serial_core.h:616 [inline])
[<81a6e25c>] (_raw_spin_unlock_irqrestore) from [<80a8f5a8>] (pl011_console_device_unlock+0x20/0x24 drivers/tty/serial/amba-pl011.c:2603)
[<80a8f588>] (pl011_console_device_unlock) from [<802e3750>] (nbcon_emit_one+0x88/0x100 kernel/printk/nbcon.c:1142)
[<802e36c8>] (nbcon_emit_one) from [<802e3970>] (nbcon_kthread_func+0x1a8/0x2a4 kernel/printk/nbcon.c:1229)
 r6:8280c690 r5:83bcb000 r4:829594f8
[<802e37c8>] (nbcon_kthread_func) from [<8028020c>] (kthread+0x12c/0x280 kernel/kthread.c:463)
 r10:00000000 r9:829594f8 r8:802e37c8 r7:84a47c80 r6:84a47c80 r5:83bcb000
 r4:00000001
[<802800e0>] (kthread) from [<80200114>] (ret_from_fork+0x14/0x20 arch/arm/kernel/entry-common.S:137)
Exception stack(0xeb0a5fb0 to 0xeb0a5ff8)
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 r5:802800e0
 r4:84a2b780