INFO: task kworker/1:10:14298 blocked for more than 430 seconds. Not tainted syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/1:10 state:D stack:0 pid:14298 tgid:14298 ppid:2 task_flags:0x4208060 flags:0x00000000 Workqueue: events bpf_prog_free_deferred Call trace: [<81a643fc>] (__schedule) from [<81a65390>] (__schedule_loop kernel/sched/core.c:7011 [inline]) [<81a643fc>] (__schedule) from [<81a65390>] (schedule+0x2c/0x130 kernel/sched/core.c:7026) r10:dffcdd84 r9:00000002 r8:60000013 r7:829171a0 r6:dffcdd8c r5:83aec800 r4:83aec800 [<81a65364>] (schedule) from [<81a65778>] (schedule_preempt_disabled+0x18/0x24 kernel/sched/core.c:7083) r5:83aec800 r4:8291719c [<81a65760>] (schedule_preempt_disabled) from [<81a68328>] (__mutex_lock_common kernel/locking/mutex.c:676 [inline]) [<81a65760>] (schedule_preempt_disabled) from [<81a68328>] (__mutex_lock.constprop.0+0x350/0xa24 kernel/locking/mutex.c:760) [<81a67fd8>] (__mutex_lock.constprop.0) from [<81a68ad0>] (__mutex_lock_slowpath+0x14/0x18 kernel/locking/mutex.c:1049) r10:8280c960 r9:00000001 r8:00000000 r7:ffffffff r6:00000000 r5:dffcde08 r4:00000000 [<81a68abc>] (__mutex_lock_slowpath) from [<81a68b10>] (mutex_lock+0x3c/0x40 kernel/locking/mutex.c:274) [<81a68ad4>] (mutex_lock) from [<804ea30c>] (_vm_unmap_aliases+0x68/0x240 mm/vmalloc.c:2918) [<804ea2a4>] (_vm_unmap_aliases) from [<804ee0ec>] (vm_reset_perms mm/vmalloc.c:3349 [inline]) [<804ea2a4>] (_vm_unmap_aliases) from [<804ee0ec>] (vfree+0x16c/0x210 mm/vmalloc.c:3428) r10:83016170 r9:00000001 r8:00000000 r7:ffffffff r6:00000000 r5:85c7b080 r4:00000000 [<804edf80>] (vfree) from [<80559038>] (execmem_free+0x30/0x50 mm/execmem.c:503) r9:83018605 r8:83aec800 r7:00000000 r6:83018600 r5:00001000 r4:7f2fc000 [<80559008>] (execmem_free) from [<803c5fa0>] (bpf_jit_free_exec+0x10/0x14 kernel/bpf/core.c:1052) r5:00001000 r4:ea37b000 [<803c5f90>] (bpf_jit_free_exec) from [<803c6380>] (bpf_jit_binary_free kernel/bpf/core.c:1098 [inline]) [<803c5f90>] (bpf_jit_free_exec) from [<803c6380>] (bpf_jit_free+0x68/0xe4 kernel/bpf/core.c:1221) [<803c6318>] (bpf_jit_free) from [<803c7428>] (bpf_prog_free_deferred+0x140/0x158 kernel/bpf/core.c:2898) r5:85ceab8c r4:85c57e00 [<803c72e8>] (bpf_prog_free_deferred) from [<802785a0>] (process_one_work+0x1b4/0x4f4 kernel/workqueue.c:3263) r7:ddde3d80 r6:83018600 r5:85ceab8c r4:85c57e00 [<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 r9:83aec800 r8:85c57e2c r7:82804d40 r6:ddde3d80 r5:ddde3da0 r4:85c57e00 [<80278fec>] (worker_thread) from [<8028020c>] (kthread+0x12c/0x280 kernel/kthread.c:463) r10:00000000 r9:85c57e00 r8:80278fec r7:df9e9e60 r6:85c57000 r5:83aec800 r4:00000001 [<802800e0>] (kthread) from [<80200114>] (ret_from_fork+0x14/0x20 arch/arm/kernel/entry-common.S:137) Exception stack(0xdffcdfb0 to 0xdffcdff8) 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 r4:85526300 INFO: task kworker/1:10:14298 is blocked on a mutex likely owned by task kworker/1:31:16340. task:kworker/1:31 state:R running task stack:0 pid:16340 tgid:16340 ppid:2 task_flags:0x4208060 flags:0x00000000 Workqueue: events bpf_prog_free_deferred Call trace: [<81a643fc>] (__schedule) from [<81a657c4>] (preempt_schedule_irq+0x40/0xa8 kernel/sched/core.c:7256) r10:8280c9b4 r9:85849800 r8:80200c04 r7:ea421d54 r6:ffffffff r5:85849800 r4:00000000 [<81a65784>] (preempt_schedule_irq) from [<80200c24>] (svc_preempt+0x8/0x18) Exception stack(0xea421d20 to 0xea421d68) 1d20: 99fc7000 eaa35000 00000001 80239bf8 7f2ec000 00000001 82acb1c4 82aca5a0 1d40: 7f2ec000 eaa35000 8280c9b4 ea421d9c ea421da0 ea421d70 80230af0 80239c10 1d60: 80010013 ffffffff r5:80010013 r4:80239c10 [<80230a8c>] (flush_tlb_kernel_range) from [<804ea0d0>] (__purge_vmap_area_lazy+0x284/0x458 mm/vmalloc.c:2342) r4:82acb1e4 [<804e9e4c>] (__purge_vmap_area_lazy) from [<804ea488>] (_vm_unmap_aliases+0x1e4/0x240 mm/vmalloc.c:2957) r10:00000000 r9:00000000 r8:00000000 r7:ffffffff r6:ea421dc0 r5:ea421e08 r4:ea421dc0 [<804ea2a4>] (_vm_unmap_aliases) from [<804ee0ec>] (vm_reset_perms mm/vmalloc.c:3349 [inline]) [<804ea2a4>] (_vm_unmap_aliases) from [<804ee0ec>] (vfree+0x16c/0x210 mm/vmalloc.c:3428) r10:83016170 r9:00000001 r8:00000000 r7:ffffffff r6:00000000 r5:861a59c0 r4:00000000 [<804edf80>] (vfree) from [<80559038>] (execmem_free+0x30/0x50 mm/execmem.c:503) r9:83018605 r8:85849800 r7:00000000 r6:83018600 r5:00001000 r4:7f2d8000 [<80559008>] (execmem_free) from [<803c5fa0>] (bpf_jit_free_exec+0x10/0x14 kernel/bpf/core.c:1052) r5:00001000 r4:dff17000 [<803c5f90>] (bpf_jit_free_exec) from [<803c6380>] (bpf_jit_binary_free kernel/bpf/core.c:1098 [inline]) [<803c5f90>] (bpf_jit_free_exec) from [<803c6380>] (bpf_jit_free+0x68/0xe4 kernel/bpf/core.c:1221) [<803c6318>] (bpf_jit_free) from [<803c7428>] (bpf_prog_free_deferred+0x140/0x158 kernel/bpf/core.c:2898) r5:84fde38c r4:85422d80 [<803c72e8>] (bpf_prog_free_deferred) from [<802785a0>] (process_one_work+0x1b4/0x4f4 kernel/workqueue.c:3263) r7:ddde3d80 r6:83018600 r5:84fde38c r4:85422d80 [<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 r9:85849800 r8:85422dac r7:82804d40 r6:ddde3d80 r5:ddde3da0 r4:85422d80 [<80278fec>] (worker_thread) from [<8028020c>] (kthread+0x12c/0x280 kernel/kthread.c:463) r10:00000000 r9:85422d80 r8:80278fec r7:ea395e60 r6:85422300 r5:85849800 r4:00000001 [<802800e0>] (kthread) from [<80200114>] (ret_from_fork+0x14/0x20 arch/arm/kernel/entry-common.S:137) Exception stack(0xea421fb0 to 0xea421ff8) 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 r4:84612540 INFO: task kworker/1:13:14309 blocked for more than 430 seconds. Not tainted syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/1:13 state:D stack:0 pid:14309 tgid:14309 ppid:2 task_flags:0x4208060 flags:0x00000000 Workqueue: events bpf_prog_free_deferred Call trace: [<81a643fc>] (__schedule) from [<81a65390>] (__schedule_loop kernel/sched/core.c:7011 [inline]) [<81a643fc>] (__schedule) from [<81a65390>] (schedule+0x2c/0x130 kernel/sched/core.c:7026) r10:e0061d84 r9:00000002 r8:600e0113 r7:829171a0 r6:e0061d8c r5:845d3000 r4:845d3000 [<81a65364>] (schedule) from [<81a65778>] (schedule_preempt_disabled+0x18/0x24 kernel/sched/core.c:7083) r5:845d3000 r4:8291719c [<81a65760>] (schedule_preempt_disabled) from [<81a68328>] (__mutex_lock_common kernel/locking/mutex.c:676 [inline]) [<81a65760>] (schedule_preempt_disabled) from [<81a68328>] (__mutex_lock.constprop.0+0x350/0xa24 kernel/locking/mutex.c:760) [<81a67fd8>] (__mutex_lock.constprop.0) from [<81a68ad0>] (__mutex_lock_slowpath+0x14/0x18 kernel/locking/mutex.c:1049) r10:8280c960 r9:00000001 r8:00000000 r7:ffffffff r6:00000000 r5:e0061e08 r4:00000000 [<81a68abc>] (__mutex_lock_slowpath) from [<81a68b10>] (mutex_lock+0x3c/0x40 kernel/locking/mutex.c:274) [<81a68ad4>] (mutex_lock) from [<804ea30c>] (_vm_unmap_aliases+0x68/0x240 mm/vmalloc.c:2918) [<804ea2a4>] (_vm_unmap_aliases) from [<804ee0ec>] (vm_reset_perms mm/vmalloc.c:3349 [inline]) [<804ea2a4>] (_vm_unmap_aliases) from [<804ee0ec>] (vfree+0x16c/0x210 mm/vmalloc.c:3428) r10:83016170 r9:00000001 r8:00000000 r7:ffffffff r6:00000000 r5:865cea40 r4:00000000 [<804edf80>] (vfree) from [<80559038>] (execmem_free+0x30/0x50 mm/execmem.c:503) r9:83018605 r8:845d3000 r7:00000000 r6:83018600 r5:00001000 r4:7f2fa000 [<80559008>] (execmem_free) from [<803c5fa0>] (bpf_jit_free_exec+0x10/0x14 kernel/bpf/core.c:1052) r5:00001000 r4:ea375000 [<803c5f90>] (bpf_jit_free_exec) from [<803c6380>] (bpf_jit_binary_free kernel/bpf/core.c:1098 [inline]) [<803c5f90>] (bpf_jit_free_exec) from [<803c6380>] (bpf_jit_free+0x68/0xe4 kernel/bpf/core.c:1221) [<803c6318>] (bpf_jit_free) from [<803c7428>] (bpf_prog_free_deferred+0x140/0x158 kernel/bpf/core.c:2898) r5:85cea38c r4:85c57100 [<803c72e8>] (bpf_prog_free_deferred) from [<802785a0>] (process_one_work+0x1b4/0x4f4 kernel/workqueue.c:3263) r7:ddde3d80 r6:83018600 r5:85cea38c r4:85c57100 [<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 r9:845d3000 r8:85c5712c r7:82804d40 r6:ddde3d80 r5:ddde3da0 r4:85c57100 [<80278fec>] (worker_thread) from [<8028020c>] (kthread+0x12c/0x280 kernel/kthread.c:463) r10:00000000 r9:85c57100 r8:80278fec r7:dffcde60 r6:85c57b00 r5:845d3000 r4:00000001 [<802800e0>] (kthread) from [<80200114>] (ret_from_fork+0x14/0x20 arch/arm/kernel/entry-common.S:137) Exception stack(0xe0061fb0 to 0xe0061ff8) 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 r4:85526600 INFO: task kworker/1:13:14309 is blocked on a mutex likely owned by task kworker/1:31:16340. task:kworker/1:31 state:R running task stack:0 pid:16340 tgid:16340 ppid:2 task_flags:0x4208060 flags:0x00000000 Workqueue: events bpf_prog_free_deferred Call trace: [<81a643fc>] (__schedule) from [<81a657c4>] (preempt_schedule_irq+0x40/0xa8 kernel/sched/core.c:7256) r10:8280c9b4 r9:85849800 r8:80200c04 r7:ea421d54 r6:ffffffff r5:85849800 r4:00000000 [<81a65784>] (preempt_schedule_irq) from [<80200c24>] (svc_preempt+0x8/0x18) Exception stack(0xea421d20 to 0xea421d68) 1d20: 99fc7000 eaa35000 00000001 80239bf8 7f2ec000 00000001 82acb1c4 82aca5a0 1d40: 7f2ec000 eaa35000 8280c9b4 ea421d9c ea421da0 ea421d70 80230af0 80239c10 1d60: 80010013 ffffffff r5:80010013 r4:80239c10 [<80230a8c>] (flush_tlb_kernel_range) from [<804ea0d0>] (__purge_vmap_area_lazy+0x284/0x458 mm/vmalloc.c:2342) r4:82acb1e4 [<804e9e4c>] (__purge_vmap_area_lazy) from [<804ea488>] (_vm_unmap_aliases+0x1e4/0x240 mm/vmalloc.c:2957) r10:00000000 r9:00000000 r8:00000000 r7:ffffffff r6:ea421dc0 r5:ea421e08 r4:ea421dc0 [<804ea2a4>] (_vm_unmap_aliases) from [<804ee0ec>] (vm_reset_perms mm/vmalloc.c:3349 [inline]) [<804ea2a4>] (_vm_unmap_aliases) from [<804ee0ec>] (vfree+0x16c/0x210 mm/vmalloc.c:3428) r10:83016170 r9:00000001 r8:00000000 r7:ffffffff r6:00000000 r5:861a59c0 r4:00000000 [<804edf80>] (vfree) from [<80559038>] (execmem_free+0x30/0x50 mm/execmem.c:503) r9:83018605 r8:85849800 r7:00000000 r6:83018600 r5:00001000 r4:7f2d8000 [<80559008>] (execmem_free) from [<803c5fa0>] (bpf_jit_free_exec+0x10/0x14 kernel/bpf/core.c:1052) r5:00001000 r4:dff17000 [<803c5f90>] (bpf_jit_free_exec) from [<803c6380>] (bpf_jit_binary_free kernel/bpf/core.c:1098 [inline]) [<803c5f90>] (bpf_jit_free_exec) from [<803c6380>] (bpf_jit_free+0x68/0xe4 kernel/bpf/core.c:1221) [<803c6318>] (bpf_jit_free) from [<803c7428>] (bpf_prog_free_deferred+0x140/0x158 kernel/bpf/core.c:2898) r5:84fde38c r4:85422d80 [<803c72e8>] (bpf_prog_free_deferred) from [<802785a0>] (process_one_work+0x1b4/0x4f4 kernel/workqueue.c:3263) r7:ddde3d80 r6:83018600 r5:84fde38c r4:85422d80 [<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 r9:85849800 r8:85422dac r7:82804d40 r6:ddde3d80 r5:ddde3da0 r4:85422d80 [<80278fec>] (worker_thread) from [<8028020c>] (kthread+0x12c/0x280 kernel/kthread.c:463) r10:00000000 r9:85422d80 r8:80278fec r7:ea395e60 r6:85422300 r5:85849800 r4:00000001 [<802800e0>] (kthread) from [<80200114>] (ret_from_fork+0x14/0x20 arch/arm/kernel/entry-common.S:137) Exception stack(0xea421fb0 to 0xea421ff8) 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 r4:84612540 INFO: task kworker/0:9:14327 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:14327 tgid:14327 ppid:2 task_flags:0x4208060 flags:0x00000000 Workqueue: events bpf_prog_free_deferred Call trace: [<81a643fc>] (__schedule) from [<81a65390>] (__schedule_loop kernel/sched/core.c:7011 [inline]) [<81a643fc>] (__schedule) from [<81a65390>] (schedule+0x2c/0x130 kernel/sched/core.c:7026) r10:dfb2dd84 r9:00000002 r8:60000013 r7:829171a0 r6:dfb2dd8c r5:85904800 r4:85904800 [<81a65364>] (schedule) from [<81a65778>] (schedule_preempt_disabled+0x18/0x24 kernel/sched/core.c:7083) r5:85904800 r4:8291719c [<81a65760>] (schedule_preempt_disabled) from [<81a68328>] (__mutex_lock_common kernel/locking/mutex.c:676 [inline]) [<81a65760>] (schedule_preempt_disabled) from [<81a68328>] (__mutex_lock.constprop.0+0x350/0xa24 kernel/locking/mutex.c:760) [<81a67fd8>] (__mutex_lock.constprop.0) from [<81a68ad0>] (__mutex_lock_slowpath+0x14/0x18 kernel/locking/mutex.c:1049) r10:8280c960 r9:00000001 r8:00000000 r7:ffffffff r6:00000000 r5:dfb2de08 r4:00000000 [<81a68abc>] (__mutex_lock_slowpath) from [<81a68b10>] (mutex_lock+0x3c/0x40 kernel/locking/mutex.c:274) [<81a68ad4>] (mutex_lock) from [<804ea30c>] (_vm_unmap_aliases+0x68/0x240 mm/vmalloc.c:2918) [<804ea2a4>] (_vm_unmap_aliases) from [<804ee0ec>] (vm_reset_perms mm/vmalloc.c:3349 [inline]) [<804ea2a4>] (_vm_unmap_aliases) from [<804ee0ec>] (vfree+0x16c/0x210 mm/vmalloc.c:3428) r10:83016170 r9:00000001 r8:00000000 r7:ffffffff r6:00000000 r5:86605140 r4:00000000 [<804edf80>] (vfree) from [<80559038>] (execmem_free+0x30/0x50 mm/execmem.c:503) r9:83018405 r8:85904800 r7:00000000 r6:83018400 r5:00001000 r4:7f292000 [<80559008>] (execmem_free) from [<803c5fa0>] (bpf_jit_free_exec+0x10/0x14 kernel/bpf/core.c:1052) r5:00001000 r4:df83f000 [<803c5f90>] (bpf_jit_free_exec) from [<803c6380>] (bpf_jit_binary_free kernel/bpf/core.c:1098 [inline]) [<803c5f90>] (bpf_jit_free_exec) from [<803c6380>] (bpf_jit_free+0x68/0xe4 kernel/bpf/core.c:1221) [<803c6318>] (bpf_jit_free) from [<803c7428>] (bpf_prog_free_deferred+0x140/0x158 kernel/bpf/core.c:2898) r5:85e3b38c r4:85ebd480 [<803c72e8>] (bpf_prog_free_deferred) from [<802785a0>] (process_one_work+0x1b4/0x4f4 kernel/workqueue.c:3263) r7:dddcfd80 r6:83018400 r5:85e3b38c r4:85ebd480 [<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 r9:85904800 r8:85ebd4ac r7:82804d40 r6:dddcfd80 r5:dddcfda0 r4:85ebd480 [<80278fec>] (worker_thread) from [<8028020c>] (kthread+0x12c/0x280 kernel/kthread.c:463) r10:00000000 r9:85ebd480 r8:80278fec r7:dfff5e60 r6:865ded80 r5:85904800 r4:00000001 [<802800e0>] (kthread) from [<80200114>] (ret_from_fork+0x14/0x20 arch/arm/kernel/entry-common.S:137) Exception stack(0xdfb2dfb0 to 0xdfb2dff8) 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 r4:8566b080 INFO: task kworker/0:9:14327 is blocked on a mutex likely owned by task kworker/1:31:16340. task:kworker/1:31 state:R running task stack:0 pid:16340 tgid:16340 ppid:2 task_flags:0x4208060 flags:0x00000000 Workqueue: events bpf_prog_free_deferred Call trace: [<81a643fc>] (__schedule) from [<81a657c4>] (preempt_schedule_irq+0x40/0xa8 kernel/sched/core.c:7256) r10:8280c9b4 r9:85849800 r8:80200c04 r7:ea421d54 r6:ffffffff r5:85849800 r4:00000000 [<81a65784>] (preempt_schedule_irq) from [<80200c24>] (svc_preempt+0x8/0x18) Exception stack(0xea421d20 to 0xea421d68) 1d20: 99fc7000 eaa35000 00000001 80239bf8 7f2ec000 00000001 82acb1c4 82aca5a0 1d40: 7f2ec000 eaa35000 8280c9b4 ea421d9c ea421da0 ea421d70 80230af0 80239c10 1d60: 80010013 ffffffff r5:80010013 r4:80239c10 [<80230a8c>] (flush_tlb_kernel_range) from [<804ea0d0>] (__purge_vmap_area_lazy+0x284/0x458 mm/vmalloc.c:2342) r4:82acb1e4 [<804e9e4c>] (__purge_vmap_area_lazy) from [<804ea488>] (_vm_unmap_aliases+0x1e4/0x240 mm/vmalloc.c:2957) r10:00000000 r9:00000000 r8:00000000 r7:ffffffff r6:ea421dc0 r5:ea421e08 r4:ea421dc0 [<804ea2a4>] (_vm_unmap_aliases) from [<804ee0ec>] (vm_reset_perms mm/vmalloc.c:3349 [inline]) [<804ea2a4>] (_vm_unmap_aliases) from [<804ee0ec>] (vfree+0x16c/0x210 mm/vmalloc.c:3428) r10:83016170 r9:00000001 r8:00000000 r7:ffffffff r6:00000000 r5:861a59c0 r4:00000000 [<804edf80>] (vfree) from [<80559038>] (execmem_free+0x30/0x50 mm/execmem.c:503) r9:83018605 r8:85849800 r7:00000000 r6:83018600 r5:00001000 r4:7f2d8000 [<80559008>] (execmem_free) from [<803c5fa0>] (bpf_jit_free_exec+0x10/0x14 kernel/bpf/core.c:1052) r5:00001000 r4:dff17000 [<803c5f90>] (bpf_jit_free_exec) from [<803c6380>] (bpf_jit_binary_free kernel/bpf/core.c:1098 [inline]) [<803c5f90>] (bpf_jit_free_exec) from [<803c6380>] (bpf_jit_free+0x68/0xe4 kernel/bpf/core.c:1221) [<803c6318>] (bpf_jit_free) from [<803c7428>] (bpf_prog_free_deferred+0x140/0x158 kernel/bpf/core.c:2898) r5:84fde38c r4:85422d80 [<803c72e8>] (bpf_prog_free_deferred) from [<802785a0>] (process_one_work+0x1b4/0x4f4 kernel/workqueue.c:3263) r7:ddde3d80 r6:83018600 r5:84fde38c r4:85422d80 [<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 r9:85849800 r8:85422dac r7:82804d40 r6:ddde3d80 r5:ddde3da0 r4:85422d80 [<80278fec>] (worker_thread) from [<8028020c>] (kthread+0x12c/0x280 kernel/kthread.c:463) r10:00000000 r9:85422d80 r8:80278fec r7:ea395e60 r6:85422300 r5:85849800 r4:00000001 [<802800e0>] (kthread) from [<80200114>] (ret_from_fork+0x14/0x20 arch/arm/kernel/entry-common.S:137) Exception stack(0xea421fb0 to 0xea421ff8) 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 r4:84612540 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 r6:00000013 r5:60000093 r4:82252738 [<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 [<81a4e014>] (nmi_cpu_backtrace+0x160/0x17c lib/nmi_backtrace.c:113) [<81a4deb4>] (nmi_cpu_backtrace) from [<81a4e160>] (nmi_trigger_cpumask_backtrace+0x130/0x1d8 lib/nmi_backtrace.c:62) r7:00000000 r6:8280c690 r5:8281ae34 r4:ffffffff [<81a4e030>] (nmi_trigger_cpumask_backtrace) from [<802304fc>] (arch_trigger_cpumask_backtrace+0x18/0x1c arch/arm/kernel/smp.c:852) r9:8281ba28 r8:8280c810 r7:00049ccd r6:00007e78 r5:82abf7d4 r4:86451a0c [<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: 2821 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 : [<81a6e264>] lr : [<80a8f568>] psr: 600f0013 sp : eadc9eb0 ip : eadc9ec0 fp : eadc9ebc r10: 82959594 r9 : 00000001 r8 : 00000000 r7 : 00000117 r6 : 829594f8 r5 : 00000000 r4 : 00000001 r3 : 00001a34 r2 : 00000000 r1 : 600f0013 r0 : 83ff1c40 Flags: nZCv IRQs on FIQs on Mode SVC_32 ISA ARM Segment none Control: 30c5387d Table: 85bf7680 DAC: 00000000 Call trace: [<81a6e23c>] (_raw_spin_unlock_irqrestore) from [<80a8f568>] (spin_unlock_irqrestore include/linux/spinlock.h:406 [inline]) [<81a6e23c>] (_raw_spin_unlock_irqrestore) from [<80a8f568>] (__uart_port_unlock_irqrestore include/linux/serial_core.h:616 [inline]) [<81a6e23c>] (_raw_spin_unlock_irqrestore) from [<80a8f568>] (pl011_console_device_unlock+0x20/0x24 drivers/tty/serial/amba-pl011.c:2603) [<80a8f548>] (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 r5:83845400 r4:829594f8 [<802e37c8>] (nbcon_kthread_func) from [<8028020c>] (kthread+0x12c/0x280 kernel/kthread.c:463) r10:00000000 r9:829594f8 r8:802e37c8 r7:8487cd80 r6:8487cd80 r5:83845400 r4:00000001 [<802800e0>] (kthread) from [<80200114>] (ret_from_fork+0x14/0x20 arch/arm/kernel/entry-common.S:137) Exception stack(0xeadc9fb0 to 0xeadc9ff8) 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 r4:84875200