INFO: task kworker/0:53:19011 blocked for more than 430 seconds. Not tainted syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/0:53 state:D stack:0 pid:19011 tgid:19011 ppid:2 task_flags:0x4208060 flags:0x00000000 Workqueue: events bpf_prog_free_deferred Call trace: [<81a631d4>] (__schedule) from [<81a64168>] (__schedule_loop kernel/sched/core.c:7011 [inline]) [<81a631d4>] (__schedule) from [<81a64168>] (schedule+0x2c/0x130 kernel/sched/core.c:7026) r10:ea561d84 r9:00000002 r8:60000113 r7:829171a0 r6:ea561d8c r5:8423d400 r4:8423d400 [<81a6413c>] (schedule) from [<81a64550>] (schedule_preempt_disabled+0x18/0x24 kernel/sched/core.c:7083) r5:8423d400 r4:8291719c [<81a64538>] (schedule_preempt_disabled) from [<81a67100>] (__mutex_lock_common kernel/locking/mutex.c:676 [inline]) [<81a64538>] (schedule_preempt_disabled) from [<81a67100>] (__mutex_lock.constprop.0+0x350/0xa24 kernel/locking/mutex.c:760) [<81a66db0>] (__mutex_lock.constprop.0) from [<81a678a8>] (__mutex_lock_slowpath+0x14/0x18 kernel/locking/mutex.c:1049) r10:8280c960 r9:00000001 r8:00000000 r7:ffffffff r6:00000000 r5:ea561e08 r4:00000000 [<81a67894>] (__mutex_lock_slowpath) from [<81a678e8>] (mutex_lock+0x3c/0x40 kernel/locking/mutex.c:274) [<81a678ac>] (mutex_lock) from [<804e9dd4>] (_vm_unmap_aliases+0x68/0x240 mm/vmalloc.c:2918) [<804e9d6c>] (_vm_unmap_aliases) from [<804edbb4>] (vm_reset_perms mm/vmalloc.c:3349 [inline]) [<804e9d6c>] (_vm_unmap_aliases) from [<804edbb4>] (vfree+0x16c/0x210 mm/vmalloc.c:3428) r10:83016170 r9:00000001 r8:00000000 r7:ffffffff r6:00000000 r5:85c04340 r4:00000000 [<804eda48>] (vfree) from [<805588a0>] (execmem_free+0x30/0x50 mm/execmem.c:503) r9:83018405 r8:8423d400 r7:00000000 r6:83018400 r5:00001000 r4:7f296000 [<80558870>] (execmem_free) from [<803c5dd0>] (bpf_jit_free_exec+0x10/0x14 kernel/bpf/core.c:1052) r5:00001000 r4:dfa61000 [<803c5dc0>] (bpf_jit_free_exec) from [<803c61b0>] (bpf_jit_binary_free kernel/bpf/core.c:1098 [inline]) [<803c5dc0>] (bpf_jit_free_exec) from [<803c61b0>] (bpf_jit_free+0x68/0xe4 kernel/bpf/core.c:1221) [<803c6148>] (bpf_jit_free) from [<803c7258>] (bpf_prog_free_deferred+0x140/0x158 kernel/bpf/core.c:2898) r5:84de9f8c r4:858f4d00 [<803c7118>] (bpf_prog_free_deferred) from [<802785a0>] (process_one_work+0x1b4/0x4f4 kernel/workqueue.c:3263) r7:dddcfd80 r6:83018400 r5:84de9f8c r4:858f4d00 [<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 r9:8423d400 r8:858f4d2c r7:82804d40 r6:dddcfd80 r5:dddcfda0 r4:858f4d00 [<80278fec>] (worker_thread) from [<8028020c>] (kthread+0x12c/0x280 kernel/kthread.c:463) r10:00000000 r9:858f4d00 r8:80278fec r7:ea495e60 r6:858f4a80 r5:8423d400 r4:00000001 [<802800e0>] (kthread) from [<80200114>] (ret_from_fork+0x14/0x20 arch/arm/kernel/entry-common.S:137) Exception stack(0xea561fb0 to 0xea561ff8) 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 r4:86161b00 INFO: task kworker/0:53:19011 is blocked on a mutex likely owned by task kworker/0:26:15316. task:kworker/0:26 state:R running task stack:0 pid:15316 tgid:15316 ppid:2 task_flags:0x4208060 flags:0x00000000 Workqueue: events bpf_prog_free_deferred Call trace: [<81a631d4>] (__schedule) from [<81a6459c>] (preempt_schedule_irq+0x40/0xa8 kernel/sched/core.c:7256) r10:8280c9b4 r9:8321b000 r8:80200c04 r7:eab95d54 r6:ffffffff r5:8321b000 r4:00000000 [<81a6455c>] (preempt_schedule_irq) from [<80200c24>] (svc_preempt+0x8/0x18) Exception stack(0xeab95d20 to 0xeab95d68) 5d20: a9707000 ea8cf000 00000001 80239bf8 7f22e000 00000001 82acb1c4 82aca5a0 5d40: 7f22e000 ea8cf000 8280c9b4 eab95d9c eab95da0 eab95d70 80230af0 80239c10 5d60: 800b0113 ffffffff r5:800b0113 r4:80239c10 [<80230a8c>] (flush_tlb_kernel_range) from [<804e9b98>] (__purge_vmap_area_lazy+0x284/0x458 mm/vmalloc.c:2342) r4:82acb1e4 [<804e9914>] (__purge_vmap_area_lazy) from [<804e9f50>] (_vm_unmap_aliases+0x1e4/0x240 mm/vmalloc.c:2957) r10:00000000 r9:00000000 r8:00000000 r7:ffffffff r6:eab95dc0 r5:eab95e08 r4:eab95dc0 [<804e9d6c>] (_vm_unmap_aliases) from [<804edbb4>] (vm_reset_perms mm/vmalloc.c:3349 [inline]) [<804e9d6c>] (_vm_unmap_aliases) from [<804edbb4>] (vfree+0x16c/0x210 mm/vmalloc.c:3428) r10:83016170 r9:00000001 r8:00000000 r7:ffffffff r6:00000000 r5:85dd0600 r4:00000000 [<804eda48>] (vfree) from [<805588a0>] (execmem_free+0x30/0x50 mm/execmem.c:503) r9:83018405 r8:8321b000 r7:00000000 r6:83018400 r5:00001000 r4:7f2d6000 [<80558870>] (execmem_free) from [<803c5dd0>] (bpf_jit_free_exec+0x10/0x14 kernel/bpf/core.c:1052) r5:00001000 r4:e4163000 [<803c5dc0>] (bpf_jit_free_exec) from [<803c61b0>] (bpf_jit_binary_free kernel/bpf/core.c:1098 [inline]) [<803c5dc0>] (bpf_jit_free_exec) from [<803c61b0>] (bpf_jit_free+0x68/0xe4 kernel/bpf/core.c:1221) [<803c6148>] (bpf_jit_free) from [<803c7258>] (bpf_prog_free_deferred+0x140/0x158 kernel/bpf/core.c:2898) r5:84e3878c r4:85d45d00 [<803c7118>] (bpf_prog_free_deferred) from [<802785a0>] (process_one_work+0x1b4/0x4f4 kernel/workqueue.c:3263) r7:dddcfd80 r6:83018400 r5:84e3878c r4:85d45d00 [<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 r9:8321b000 r8:85d45d2c r7:82804d40 r6:dddcfd80 r5:dddcfda0 r4:85d45d00 [<80278fec>] (worker_thread) from [<8028020c>] (kthread+0x12c/0x280 kernel/kthread.c:463) r10:00000000 r9:85d45d00 r8:80278fec r7:eaabde60 r6:85d45d80 r5:8321b000 r4:00000001 [<802800e0>] (kthread) from [<80200114>] (ret_from_fork+0x14/0x20 arch/arm/kernel/entry-common.S:137) Exception stack(0xeab95fb0 to 0xeab95ff8) 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 r4:86777c40 INFO: task kworker/1:51:19111 blocked for more than 430 seconds. Not tainted syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/1:51 state:D stack:0 pid:19111 tgid:19111 ppid:2 task_flags:0x4208060 flags:0x00000000 Workqueue: events bpf_prog_free_deferred Call trace: [<81a631d4>] (__schedule) from [<81a64168>] (__schedule_loop kernel/sched/core.c:7011 [inline]) [<81a631d4>] (__schedule) from [<81a64168>] (schedule+0x2c/0x130 kernel/sched/core.c:7026) r10:ea695d84 r9:00000002 r8:60000113 r7:829171a0 r6:ea695d8c r5:8423bc00 r4:8423bc00 [<81a6413c>] (schedule) from [<81a64550>] (schedule_preempt_disabled+0x18/0x24 kernel/sched/core.c:7083) r5:8423bc00 r4:8291719c [<81a64538>] (schedule_preempt_disabled) from [<81a67100>] (__mutex_lock_common kernel/locking/mutex.c:676 [inline]) [<81a64538>] (schedule_preempt_disabled) from [<81a67100>] (__mutex_lock.constprop.0+0x350/0xa24 kernel/locking/mutex.c:760) [<81a66db0>] (__mutex_lock.constprop.0) from [<81a678a8>] (__mutex_lock_slowpath+0x14/0x18 kernel/locking/mutex.c:1049) r10:8280c960 r9:00000001 r8:00000000 r7:ffffffff r6:00000000 r5:ea695e08 r4:00000000 [<81a67894>] (__mutex_lock_slowpath) from [<81a678e8>] (mutex_lock+0x3c/0x40 kernel/locking/mutex.c:274) [<81a678ac>] (mutex_lock) from [<804e9dd4>] (_vm_unmap_aliases+0x68/0x240 mm/vmalloc.c:2918) [<804e9d6c>] (_vm_unmap_aliases) from [<804edbb4>] (vm_reset_perms mm/vmalloc.c:3349 [inline]) [<804e9d6c>] (_vm_unmap_aliases) from [<804edbb4>] (vfree+0x16c/0x210 mm/vmalloc.c:3428) r10:83016170 r9:00000001 r8:00000000 r7:ffffffff r6:00000000 r5:860aed00 r4:00000000 [<804eda48>] (vfree) from [<805588a0>] (execmem_free+0x30/0x50 mm/execmem.c:503) r9:83018605 r8:8423bc00 r7:00000000 r6:83018600 r5:00001000 r4:7f26c000 [<80558870>] (execmem_free) from [<803c5dd0>] (bpf_jit_free_exec+0x10/0x14 kernel/bpf/core.c:1052) r5:00001000 r4:df849000 [<803c5dc0>] (bpf_jit_free_exec) from [<803c61b0>] (bpf_jit_binary_free kernel/bpf/core.c:1098 [inline]) [<803c5dc0>] (bpf_jit_free_exec) from [<803c61b0>] (bpf_jit_free+0x68/0xe4 kernel/bpf/core.c:1221) [<803c6148>] (bpf_jit_free) from [<803c7258>] (bpf_prog_free_deferred+0x140/0x158 kernel/bpf/core.c:2898) r5:86af2b8c r4:8578bd00 [<803c7118>] (bpf_prog_free_deferred) from [<802785a0>] (process_one_work+0x1b4/0x4f4 kernel/workqueue.c:3263) r7:ddde3d80 r6:83018600 r5:86af2b8c r4:8578bd00 [<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 r9:8423bc00 r8:8578bd2c r7:82804d40 r6:ddde3d80 r5:ddde3da0 r4:8578bd00 [<80278fec>] (worker_thread) from [<8028020c>] (kthread+0x12c/0x280 kernel/kthread.c:463) r10:00000000 r9:8578bd00 r8:80278fec r7:ea5a1e60 r6:8578bb00 r5:8423bc00 r4:00000001 [<802800e0>] (kthread) from [<80200114>] (ret_from_fork+0x14/0x20 arch/arm/kernel/entry-common.S:137) Exception stack(0xea695fb0 to 0xea695ff8) 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 r4:86b82b80 INFO: task kworker/1:51:19111 is blocked on a mutex likely owned by task kworker/0:26:15316. task:kworker/0:26 state:R running task stack:0 pid:15316 tgid:15316 ppid:2 task_flags:0x4208060 flags:0x00000000 Workqueue: events bpf_prog_free_deferred Call trace: [<81a631d4>] (__schedule) from [<81a6459c>] (preempt_schedule_irq+0x40/0xa8 kernel/sched/core.c:7256) r10:8280c9b4 r9:8321b000 r8:80200c04 r7:eab95d54 r6:ffffffff r5:8321b000 r4:00000000 [<81a6455c>] (preempt_schedule_irq) from [<80200c24>] (svc_preempt+0x8/0x18) Exception stack(0xeab95d20 to 0xeab95d68) 5d20: a9707000 ea8cf000 00000001 80239bf8 7f22e000 00000001 82acb1c4 82aca5a0 5d40: 7f22e000 ea8cf000 8280c9b4 eab95d9c eab95da0 eab95d70 80230af0 80239c10 5d60: 800b0113 ffffffff r5:800b0113 r4:80239c10 [<80230a8c>] (flush_tlb_kernel_range) from [<804e9b98>] (__purge_vmap_area_lazy+0x284/0x458 mm/vmalloc.c:2342) r4:82acb1e4 [<804e9914>] (__purge_vmap_area_lazy) from [<804e9f50>] (_vm_unmap_aliases+0x1e4/0x240 mm/vmalloc.c:2957) r10:00000000 r9:00000000 r8:00000000 r7:ffffffff r6:eab95dc0 r5:eab95e08 r4:eab95dc0 [<804e9d6c>] (_vm_unmap_aliases) from [<804edbb4>] (vm_reset_perms mm/vmalloc.c:3349 [inline]) [<804e9d6c>] (_vm_unmap_aliases) from [<804edbb4>] (vfree+0x16c/0x210 mm/vmalloc.c:3428) r10:83016170 r9:00000001 r8:00000000 r7:ffffffff r6:00000000 r5:85dd0600 r4:00000000 [<804eda48>] (vfree) from [<805588a0>] (execmem_free+0x30/0x50 mm/execmem.c:503) r9:83018405 r8:8321b000 r7:00000000 r6:83018400 r5:00001000 r4:7f2d6000 [<80558870>] (execmem_free) from [<803c5dd0>] (bpf_jit_free_exec+0x10/0x14 kernel/bpf/core.c:1052) r5:00001000 r4:e4163000 [<803c5dc0>] (bpf_jit_free_exec) from [<803c61b0>] (bpf_jit_binary_free kernel/bpf/core.c:1098 [inline]) [<803c5dc0>] (bpf_jit_free_exec) from [<803c61b0>] (bpf_jit_free+0x68/0xe4 kernel/bpf/core.c:1221) [<803c6148>] (bpf_jit_free) from [<803c7258>] (bpf_prog_free_deferred+0x140/0x158 kernel/bpf/core.c:2898) r5:84e3878c r4:85d45d00 [<803c7118>] (bpf_prog_free_deferred) from [<802785a0>] (process_one_work+0x1b4/0x4f4 kernel/workqueue.c:3263) r7:dddcfd80 r6:83018400 r5:84e3878c r4:85d45d00 [<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 r9:8321b000 r8:85d45d2c r7:82804d40 r6:dddcfd80 r5:dddcfda0 r4:85d45d00 [<80278fec>] (worker_thread) from [<8028020c>] (kthread+0x12c/0x280 kernel/kthread.c:463) r10:00000000 r9:85d45d00 r8:80278fec r7:eaabde60 r6:85d45d80 r5:8321b000 r4:00000001 [<802800e0>] (kthread) from [<80200114>] (ret_from_fork+0x14/0x20 arch/arm/kernel/entry-common.S:137) Exception stack(0xeab95fb0 to 0xeab95ff8) 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 r4:86777c40 INFO: task kworker/0:61:19144 blocked for more than 430 seconds. Not tainted syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/0:61 state:D stack:0 pid:19144 tgid:19144 ppid:2 task_flags:0x4208060 flags:0x00000000 Workqueue: events bpf_prog_free_deferred Call trace: [<81a631d4>] (__schedule) from [<81a64168>] (__schedule_loop kernel/sched/core.c:7011 [inline]) [<81a631d4>] (__schedule) from [<81a64168>] (schedule+0x2c/0x130 kernel/sched/core.c:7026) r10:e0025d84 r9:00000002 r8:60000013 r7:829171a0 r6:e0025d8c r5:86516000 r4:86516000 [<81a6413c>] (schedule) from [<81a64550>] (schedule_preempt_disabled+0x18/0x24 kernel/sched/core.c:7083) r5:86516000 r4:8291719c [<81a64538>] (schedule_preempt_disabled) from [<81a67100>] (__mutex_lock_common kernel/locking/mutex.c:676 [inline]) [<81a64538>] (schedule_preempt_disabled) from [<81a67100>] (__mutex_lock.constprop.0+0x350/0xa24 kernel/locking/mutex.c:760) [<81a66db0>] (__mutex_lock.constprop.0) from [<81a678a8>] (__mutex_lock_slowpath+0x14/0x18 kernel/locking/mutex.c:1049) r10:8280c960 r9:00000001 r8:00000000 r7:ffffffff r6:00000000 r5:e0025e08 r4:00000000 [<81a67894>] (__mutex_lock_slowpath) from [<81a678e8>] (mutex_lock+0x3c/0x40 kernel/locking/mutex.c:274) [<81a678ac>] (mutex_lock) from [<804e9dd4>] (_vm_unmap_aliases+0x68/0x240 mm/vmalloc.c:2918) [<804e9d6c>] (_vm_unmap_aliases) from [<804edbb4>] (vm_reset_perms mm/vmalloc.c:3349 [inline]) [<804e9d6c>] (_vm_unmap_aliases) from [<804edbb4>] (vfree+0x16c/0x210 mm/vmalloc.c:3428) r10:83016170 r9:00000001 r8:00000000 r7:ffffffff r6:00000000 r5:85c04040 r4:00000000 [<804eda48>] (vfree) from [<805588a0>] (execmem_free+0x30/0x50 mm/execmem.c:503) r9:83018405 r8:86516000 r7:00000000 r6:83018400 r5:00001000 r4:7f298000 [<80558870>] (execmem_free) from [<803c5dd0>] (bpf_jit_free_exec+0x10/0x14 kernel/bpf/core.c:1052) r5:00001000 r4:dfa6f000 [<803c5dc0>] (bpf_jit_free_exec) from [<803c61b0>] (bpf_jit_binary_free kernel/bpf/core.c:1098 [inline]) [<803c5dc0>] (bpf_jit_free_exec) from [<803c61b0>] (bpf_jit_free+0x68/0xe4 kernel/bpf/core.c:1221) [<803c6148>] (bpf_jit_free) from [<803c7258>] (bpf_prog_free_deferred+0x140/0x158 kernel/bpf/core.c:2898) r5:85865f8c r4:858f4480 [<803c7118>] (bpf_prog_free_deferred) from [<802785a0>] (process_one_work+0x1b4/0x4f4 kernel/workqueue.c:3263) r7:dddcfd80 r6:83018400 r5:85865f8c r4:858f4480 [<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 r9:86516000 r8:858f44ac r7:82804d40 r6:dddcfd80 r5:dddcfda0 r4:858f4480 [<80278fec>] (worker_thread) from [<8028020c>] (kthread+0x12c/0x280 kernel/kthread.c:463) r10:00000000 r9:858f4480 r8:80278fec r7:e0021e60 r6:858e3700 r5:86516000 r4:00000001 [<802800e0>] (kthread) from [<80200114>] (ret_from_fork+0x14/0x20 arch/arm/kernel/entry-common.S:137) Exception stack(0xe0025fb0 to 0xe0025ff8) 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 r4:866e2b00 INFO: task kworker/0:61:19144 is blocked on a mutex likely owned by task kworker/0:26:15316. task:kworker/0:26 state:R running task stack:0 pid:15316 tgid:15316 ppid:2 task_flags:0x4208060 flags:0x00000000 Workqueue: events bpf_prog_free_deferred Call trace: [<81a631d4>] (__schedule) from [<81a6459c>] (preempt_schedule_irq+0x40/0xa8 kernel/sched/core.c:7256) r10:8280c9b4 r9:8321b000 r8:80200c04 r7:eab95d54 r6:ffffffff r5:8321b000 r4:00000000 [<81a6455c>] (preempt_schedule_irq) from [<80200c24>] (svc_preempt+0x8/0x18) Exception stack(0xeab95d20 to 0xeab95d68) 5d20: a9707000 ea8cf000 00000001 80239bf8 7f22e000 00000001 82acb1c4 82aca5a0 5d40: 7f22e000 ea8cf000 8280c9b4 eab95d9c eab95da0 eab95d70 80230af0 80239c10 5d60: 800b0113 ffffffff r5:800b0113 r4:80239c10 [<80230a8c>] (flush_tlb_kernel_range) from [<804e9b98>] (__purge_vmap_area_lazy+0x284/0x458 mm/vmalloc.c:2342) r4:82acb1e4 [<804e9914>] (__purge_vmap_area_lazy) from [<804e9f50>] (_vm_unmap_aliases+0x1e4/0x240 mm/vmalloc.c:2957) r10:00000000 r9:00000000 r8:00000000 r7:ffffffff r6:eab95dc0 r5:eab95e08 r4:eab95dc0 [<804e9d6c>] (_vm_unmap_aliases) from [<804edbb4>] (vm_reset_perms mm/vmalloc.c:3349 [inline]) [<804e9d6c>] (_vm_unmap_aliases) from [<804edbb4>] (vfree+0x16c/0x210 mm/vmalloc.c:3428) r10:83016170 r9:00000001 r8:00000000 r7:ffffffff r6:00000000 r5:85dd0600 r4:00000000 [<804eda48>] (vfree) from [<805588a0>] (execmem_free+0x30/0x50 mm/execmem.c:503) r9:83018405 r8:8321b000 r7:00000000 r6:83018400 r5:00001000 r4:7f2d6000 [<80558870>] (execmem_free) from [<803c5dd0>] (bpf_jit_free_exec+0x10/0x14 kernel/bpf/core.c:1052) r5:00001000 r4:e4163000 [<803c5dc0>] (bpf_jit_free_exec) from [<803c61b0>] (bpf_jit_binary_free kernel/bpf/core.c:1098 [inline]) [<803c5dc0>] (bpf_jit_free_exec) from [<803c61b0>] (bpf_jit_free+0x68/0xe4 kernel/bpf/core.c:1221) [<803c6148>] (bpf_jit_free) from [<803c7258>] (bpf_prog_free_deferred+0x140/0x158 kernel/bpf/core.c:2898) r5:84e3878c r4:85d45d00 [<803c7118>] (bpf_prog_free_deferred) from [<802785a0>] (process_one_work+0x1b4/0x4f4 kernel/workqueue.c:3263) r7:dddcfd80 r6:83018400 r5:84e3878c r4:85d45d00 [<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 r9:8321b000 r8:85d45d2c r7:82804d40 r6:dddcfd80 r5:dddcfda0 r4:85d45d00 [<80278fec>] (worker_thread) from [<8028020c>] (kthread+0x12c/0x280 kernel/kthread.c:463) r10:00000000 r9:85d45d00 r8:80278fec r7:eaabde60 r6:85d45d80 r5:8321b000 r4:00000001 [<802800e0>] (kthread) from [<80200114>] (ret_from_fork+0x14/0x20 arch/arm/kernel/entry-common.S:137) Exception stack(0xeab95fb0 to 0xeab95ff8) 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 r4:86777c40 INFO: task kworker/0:70:19410 blocked for more than 430 seconds. Not tainted syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/0:70 state:D stack:0 pid:19410 tgid:19410 ppid:2 task_flags:0x4208060 flags:0x00000000 Workqueue: events bpf_prog_free_deferred Call trace: [<81a631d4>] (__schedule) from [<81a64168>] (__schedule_loop kernel/sched/core.c:7011 [inline]) [<81a631d4>] (__schedule) from [<81a64168>] (schedule+0x2c/0x130 kernel/sched/core.c:7026) r10:e4179d84 r9:00000002 r8:60000113 r7:829171a0 r6:e4179d8c r5:86a08000 r4:86a08000 [<81a6413c>] (schedule) from [<81a64550>] (schedule_preempt_disabled+0x18/0x24 kernel/sched/core.c:7083) r5:86a08000 r4:8291719c [<81a64538>] (schedule_preempt_disabled) from [<81a67100>] (__mutex_lock_common kernel/locking/mutex.c:676 [inline]) [<81a64538>] (schedule_preempt_disabled) from [<81a67100>] (__mutex_lock.constprop.0+0x350/0xa24 kernel/locking/mutex.c:760) [<81a66db0>] (__mutex_lock.constprop.0) from [<81a678a8>] (__mutex_lock_slowpath+0x14/0x18 kernel/locking/mutex.c:1049) r10:8280c960 r9:00000001 r8:00000000 r7:ffffffff r6:00000000 r5:e4179e08 r4:00000000 [<81a67894>] (__mutex_lock_slowpath) from [<81a678e8>] (mutex_lock+0x3c/0x40 kernel/locking/mutex.c:274) [<81a678ac>] (mutex_lock) from [<804e9dd4>] (_vm_unmap_aliases+0x68/0x240 mm/vmalloc.c:2918) [<804e9d6c>] (_vm_unmap_aliases) from [<804edbb4>] (vm_reset_perms mm/vmalloc.c:3349 [inline]) [<804e9d6c>] (_vm_unmap_aliases) from [<804edbb4>] (vfree+0x16c/0x210 mm/vmalloc.c:3428) r10:83016170 r9:00000001 r8:00000000 r7:ffffffff r6:00000000 r5:85dd0e00 r4:00000000 [<804eda48>] (vfree) from [<805588a0>] (execmem_free+0x30/0x50 mm/execmem.c:503) r9:83018405 r8:86a08000 r7:00000000 r6:83018400 r5:00001000 r4:7f2d4000 [<80558870>] (execmem_free) from [<803c5dd0>] (bpf_jit_free_exec+0x10/0x14 kernel/bpf/core.c:1052) r5:00001000 r4:e4161000 [<803c5dc0>] (bpf_jit_free_exec) from [<803c61b0>] (bpf_jit_binary_free kernel/bpf/core.c:1098 [inline]) [<803c5dc0>] (bpf_jit_free_exec) from [<803c61b0>] (bpf_jit_free+0x68/0xe4 kernel/bpf/core.c:1221) [<803c6148>] (bpf_jit_free) from [<803c7258>] (bpf_prog_free_deferred+0x140/0x158 kernel/bpf/core.c:2898) r5:868d4b8c r4:861a7580 [<803c7118>] (bpf_prog_free_deferred) from [<802785a0>] (process_one_work+0x1b4/0x4f4 kernel/workqueue.c:3263) r7:dddcfd80 r6:83018400 r5:868d4b8c r4:861a7580 [<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 r9:86a08000 r8:861a75ac r7:82804d40 r6:dddcfd80 r5:dddcfda0 r4:861a7580 [<80278fec>] (worker_thread) from [<8028020c>] (kthread+0x12c/0x280 kernel/kthread.c:463) r10:00000000 r9:861a7580 r8:80278fec r7:ea309e60 r6:861a7680 r5:86a08000 r4:00000001 [<802800e0>] (kthread) from [<80200114>] (ret_from_fork+0x14/0x20 arch/arm/kernel/entry-common.S:137) Exception stack(0xe4179fb0 to 0xe4179ff8) 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 r4:85d90900 INFO: task kworker/0:70:19410 is blocked on a mutex likely owned by task kworker/0:26:15316. task:kworker/0:26 state:R running task stack:0 pid:15316 tgid:15316 ppid:2 task_flags:0x4208060 flags:0x00000000 Workqueue: events bpf_prog_free_deferred Call trace: [<81a631d4>] (__schedule) from [<81a6459c>] (preempt_schedule_irq+0x40/0xa8 kernel/sched/core.c:7256) r10:8280c9b4 r9:8321b000 r8:80200c04 r7:eab95d54 r6:ffffffff r5:8321b000 r4:00000000 [<81a6455c>] (preempt_schedule_irq) from [<80200c24>] (svc_preempt+0x8/0x18) Exception stack(0xeab95d20 to 0xeab95d68) 5d20: a9707000 ea8cf000 00000001 80239bf8 7f22e000 00000001 82acb1c4 82aca5a0 5d40: 7f22e000 ea8cf000 8280c9b4 eab95d9c eab95da0 eab95d70 80230af0 80239c10 5d60: 800b0113 ffffffff r5:800b0113 r4:80239c10 [<80230a8c>] (flush_tlb_kernel_range) from [<804e9b98>] (__purge_vmap_area_lazy+0x284/0x458 mm/vmalloc.c:2342) r4:82acb1e4 [<804e9914>] (__purge_vmap_area_lazy) from [<804e9f50>] (_vm_unmap_aliases+0x1e4/0x240 mm/vmalloc.c:2957) r10:00000000 r9:00000000 r8:00000000 r7:ffffffff r6:eab95dc0 r5:eab95e08 r4:eab95dc0 [<804e9d6c>] (_vm_unmap_aliases) from [<804edbb4>] (vm_reset_perms mm/vmalloc.c:3349 [inline]) [<804e9d6c>] (_vm_unmap_aliases) from [<804edbb4>] (vfree+0x16c/0x210 mm/vmalloc.c:3428) r10:83016170 r9:00000001 r8:00000000 r7:ffffffff r6:00000000 r5:85dd0600 r4:00000000 [<804eda48>] (vfree) from [<805588a0>] (execmem_free+0x30/0x50 mm/execmem.c:503) r9:83018405 r8:8321b000 r7:00000000 r6:83018400 r5:00001000 r4:7f2d6000 [<80558870>] (execmem_free) from [<803c5dd0>] (bpf_jit_free_exec+0x10/0x14 kernel/bpf/core.c:1052) r5:00001000 r4:e4163000 [<803c5dc0>] (bpf_jit_free_exec) from [<803c61b0>] (bpf_jit_binary_free kernel/bpf/core.c:1098 [inline]) [<803c5dc0>] (bpf_jit_free_exec) from [<803c61b0>] (bpf_jit_free+0x68/0xe4 kernel/bpf/core.c:1221) [<803c6148>] (bpf_jit_free) from [<803c7258>] (bpf_prog_free_deferred+0x140/0x158 kernel/bpf/core.c:2898) r5:84e3878c r4:85d45d00 [<803c7118>] (bpf_prog_free_deferred) from [<802785a0>] (process_one_work+0x1b4/0x4f4 kernel/workqueue.c:3263) r7:dddcfd80 r6:83018400 r5:84e3878c r4:85d45d00 [<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 r9:8321b000 r8:85d45d2c r7:82804d40 r6:dddcfd80 r5:dddcfda0 r4:85d45d00 [<80278fec>] (worker_thread) from [<8028020c>] (kthread+0x12c/0x280 kernel/kthread.c:463) r10:00000000 r9:85d45d00 r8:80278fec r7:eaabde60 r6:85d45d80 r5:8321b000 r4:00000001 [<802800e0>] (kthread) from [<80200114>] (ret_from_fork+0x14/0x20 arch/arm/kernel/entry-common.S:137) Exception stack(0xeab95fb0 to 0xeab95ff8) 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 r4:86777c40 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 r6:000b0113 r5:600b0193 r4:822523c8 [<80201b08>] (show_stack) from [<8021f93c>] (__dump_stack lib/dump_stack.c:94 [inline]) [<80201b08>] (show_stack) from [<8021f93c>] (dump_stack_lvl+0x70/0x7c lib/dump_stack.c:120) [<8021f8cc>] (dump_stack_lvl) from [<8021f960>] (dump_stack+0x18/0x1c lib/dump_stack.c:129) r5:00000000 r4:00000001 [<8021f948>] (dump_stack) from [<81a4cdec>] (nmi_cpu_backtrace+0x160/0x17c lib/nmi_backtrace.c:113) [<81a4cc8c>] (nmi_cpu_backtrace) from [<81a4cf38>] (nmi_trigger_cpumask_backtrace+0x130/0x1d8 lib/nmi_backtrace.c:62) r7:00000000 r6:8280c690 r5:8281ae34 r4:ffffffff [<81a4ce08>] (nmi_trigger_cpumask_backtrace) from [<802304fc>] (arch_trigger_cpumask_backtrace+0x18/0x1c arch/arm/kernel/smp.c:852) r9:8281ba28 r8:8280c810 r7:00044c40 r6:00007e71 r5:82abf7d4 r4:85755d0c [<802304e4>] (arch_trigger_cpumask_backtrace) from [<8037f940>] (trigger_all_cpu_backtrace include/linux/nmi.h:160 [inline]) [<802304e4>] (arch_trigger_cpumask_backtrace) from [<8037f940>] (check_hung_uninterruptible_tasks kernel/hung_task.c:332 [inline]) [<802304e4>] (arch_trigger_cpumask_backtrace) from [<8037f940>] (watchdog+0x5d0/0x850 kernel/hung_task.c:495) [<8037f370>] (watchdog) from [<8028020c>] (kthread+0x12c/0x280 kernel/kthread.c:463) r10:00000000 r9:00000000 r8:8037f370 r7:83844000 r6:83844000 r5:832e2400 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 r4:833c9900 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 UID: 0 PID: 2819 Comm: pr/ttyAMA-1 Not tainted syzkaller #0 PREEMPT Hardware name: ARM-Versatile Express PC is at generic_test_bit include/asm-generic/bitops/generic-non-atomic.h:128 [inline] PC is at cpumask_test_cpu include/linux/cpumask.h:646 [inline] PC is at cpu_online include/linux/cpumask.h:1205 [inline] PC is at console_is_usable kernel/printk/internal.h:150 [inline] PC is at nbcon_kthread_func+0x188/0x2a4 kernel/printk/nbcon.c:1228 LR is at srcu_read_lock_nmisafe include/linux/srcu.h:334 [inline] LR is at console_srcu_read_lock+0x14/0x1c kernel/printk/printk.c:289 pc : [<802e3800>] lr : [<802dd06c>] psr: 80090113 sp : eade1ef8 ip : 00000000 fp : eade1f6c r10: 82959554 r9 : 00000001 r8 : 00000000 r7 : 00000117 r6 : 8280c690 r5 : 83aab000 r4 : 829594b8 r3 : 00000003 r2 : 826b8400 r1 : 0000127e r0 : 00000000 Flags: Nzcv IRQs on FIQs on Mode SVC_32 ISA ARM Segment none Control: 30c5387d Table: 84d68fc0 DAC: 00000000 Call trace: [<802e3678>] (nbcon_kthread_func) from [<8028020c>] (kthread+0x12c/0x280 kernel/kthread.c:463) r10:00000000 r9:829594b8 r8:802e3678 r7:844aa180 r6:844aa180 r5:83aab000 r4:00000001 [<802800e0>] (kthread) from [<80200114>] (ret_from_fork+0x14/0x20 arch/arm/kernel/entry-common.S:137) Exception stack(0xeade1fb0 to 0xeade1ff8) 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 r4:848cfa80