INFO: task kworker/0:7:10556 blocked for more than 430 seconds. Tainted: G L syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/0:7 state:D stack:0 pid:10556 tgid:10556 ppid:2 task_flags:0x4208060 flags:0x00000000 Workqueue: events bpf_prog_free_deferred Call trace: [<81ab4290>] (__schedule) from [<81ab5618>] (__schedule_loop kernel/sched/core.c:6989 [inline]) [<81ab4290>] (__schedule) from [<81ab5618>] (schedule+0x2c/0x134 kernel/sched/core.c:7004) r10:dfb2dda4 r9:00000000 r8:60000113 r7:dfb2ddac r6:82917934 r5:8475ec00 r4:8475ec00 [<81ab55ec>] (schedule) from [<81ab57a4>] (schedule_preempt_disabled+0x18/0x24 kernel/sched/core.c:7061) r5:8475ec00 r4:82917930 [<81ab578c>] (schedule_preempt_disabled) from [<81ab8d60>] (__mutex_lock_common kernel/locking/mutex.c:692 [inline]) [<81ab578c>] (schedule_preempt_disabled) from [<81ab8d60>] (__mutex_lock.constprop.0+0x584/0xf10 kernel/locking/mutex.c:776) [<81ab87dc>] (__mutex_lock.constprop.0) from [<81ab97c0>] (__mutex_lock_slowpath+0x14/0x18 kernel/locking/mutex.c:1065) r10:8280c82c r9:00000001 r8:00000000 r7:ffffffff r6:00000000 r5:dfb2de28 r4:00000000 [<81ab97ac>] (__mutex_lock_slowpath) from [<81ab9800>] (mutex_lock+0x3c/0x40 kernel/locking/mutex.c:290) [<81ab97c4>] (mutex_lock) from [<804f1c14>] (_vm_unmap_aliases+0x5c/0x238 mm/vmalloc.c:2944) [<804f1bb8>] (_vm_unmap_aliases) from [<804f58fc>] (vm_reset_perms mm/vmalloc.c:3375 [inline]) [<804f1bb8>] (_vm_unmap_aliases) from [<804f58fc>] (vfree+0x16c/0x210 mm/vmalloc.c:3454) r10:8302b005 r9:00000001 r8:00000000 r7:ffffffff r6:00000000 r5:854b2b80 r4:00000000 [<804f5790>] (vfree) from [<805608f8>] (execmem_free+0x30/0x50 mm/execmem.c:503) r9:83026970 r8:8475ec00 r7:00000000 r6:8302b000 r5:00001000 r4:7f2b6000 [<805608c8>] (execmem_free) from [<803c8054>] (bpf_jit_free_exec+0x10/0x14 kernel/bpf/core.c:1071) r5:00001000 r4:dfcaf000 [<803c8044>] (bpf_jit_free_exec) from [<803c8434>] (bpf_jit_binary_free kernel/bpf/core.c:1117 [inline]) [<803c8044>] (bpf_jit_free_exec) from [<803c8434>] (bpf_jit_free+0x64/0xe0 kernel/bpf/core.c:1240) [<803c83d0>] (bpf_jit_free) from [<803c9368>] (bpf_prog_free_deferred+0x148/0x160 kernel/bpf/core.c:2941) r5:862dc394 r4:862dc394 [<803c9220>] (bpf_prog_free_deferred) from [<802753c8>] (process_one_work+0x1b8/0x4fc kernel/workqueue.c:3275) r7:dddcfc80 r6:8302b000 r5:862dc394 r4:86139100 [<80275210>] (process_one_work) from [<802760fc>] (process_scheduled_works kernel/workqueue.c:3358 [inline]) [<80275210>] (process_one_work) from [<802760fc>] (worker_thread+0x16c/0x318 kernel/workqueue.c:3439) r10:00000000 r9:8613912c r8:8475ec00 r7:82804d80 r6:dddcfca0 r5:dddcfc80 r4:86139100 [<80275f90>] (worker_thread) from [<8027e388>] (kthread+0x118/0x138 kernel/kthread.c:467) r10:00000000 r9:86139100 r8:80275f90 r7:df98de88 r6:8475ec00 r5:856e4500 r4:864317c0 [<8027e270>] (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 r9:00000000 r8:00000000 r7:00000000 r6:00000000 r5:8027e270 r4:864317c0 INFO: task kworker/0:7:10556 is blocked on a mutex likely owned by task kworker/0:1:9223. task:kworker/0:1 state:R running task stack:0 pid:9223 tgid:9223 ppid:2 task_flags:0x4208060 flags:0x00000000 Workqueue: events bpf_prog_free_deferred Call trace: [<81ab4290>] (__schedule) from [<81ab5a50>] (preempt_schedule_irq+0x40/0xa8 kernel/sched/core.c:7234) r10:8280c880 r9:846e8c00 r8:80200c04 r7:ecb15d7c r6:ffffffff r5:846e8c00 r4:00000000 [<81ab5a10>] (preempt_schedule_irq) from [<80200c24>] (svc_preempt+0x8/0x18) Exception stack(0xecb15d48 to 0xecb15d90) 5d40: a5444000 ed373000 00000000 80238550 82ad0620 82ad1264 5d60: 7f2aa000 ed373000 00000000 00000001 8280c880 ecb15dbc ed373000 ecb15d98 5d80: 8022f4bc 80238568 80000013 ffffffff r5:80000013 r4:80238568 [<8022f45c>] (flush_tlb_kernel_range) from [<804f19c8>] (__purge_vmap_area_lazy+0x260/0x450 mm/vmalloc.c:2369) [<804f1768>] (__purge_vmap_area_lazy) from [<804f1da0>] (_vm_unmap_aliases+0x1e8/0x238 mm/vmalloc.c:2983) r10:00000000 r9:ecb15de0 r8:00000000 r7:ffffffff r6:00000008 r5:ecb15e28 r4:ecb15de0 [<804f1bb8>] (_vm_unmap_aliases) from [<804f58fc>] (vm_reset_perms mm/vmalloc.c:3375 [inline]) [<804f1bb8>] (_vm_unmap_aliases) from [<804f58fc>] (vfree+0x16c/0x210 mm/vmalloc.c:3454) r10:8302b005 r9:00000001 r8:00000000 r7:ffffffff r6:00000000 r5:84979580 r4:00000000 [<804f5790>] (vfree) from [<805608f8>] (execmem_free+0x30/0x50 mm/execmem.c:503) r9:83026970 r8:846e8c00 r7:00000000 r6:8302b000 r5:00001000 r4:7f2b2000 [<805608c8>] (execmem_free) from [<803c8054>] (bpf_jit_free_exec+0x10/0x14 kernel/bpf/core.c:1071) r5:00001000 r4:dfb8d000 [<803c8044>] (bpf_jit_free_exec) from [<803c8434>] (bpf_jit_binary_free kernel/bpf/core.c:1117 [inline]) [<803c8044>] (bpf_jit_free_exec) from [<803c8434>] (bpf_jit_free+0x64/0xe0 kernel/bpf/core.c:1240) [<803c83d0>] (bpf_jit_free) from [<803c9368>] (bpf_prog_free_deferred+0x148/0x160 kernel/bpf/core.c:2941) r5:86004394 r4:86004394 [<803c9220>] (bpf_prog_free_deferred) from [<802753c8>] (process_one_work+0x1b8/0x4fc kernel/workqueue.c:3275) r7:dddcfc80 r6:8302b000 r5:86004394 r4:85642380 [<80275210>] (process_one_work) from [<802760fc>] (process_scheduled_works kernel/workqueue.c:3358 [inline]) [<80275210>] (process_one_work) from [<802760fc>] (worker_thread+0x16c/0x318 kernel/workqueue.c:3439) r10:00000000 r9:856423ac r8:846e8c00 r7:82804d80 r6:dddcfca0 r5:dddcfc80 r4:85642380 [<80275f90>] (worker_thread) from [<8027e388>] (kthread+0x118/0x138 kernel/kthread.c:467) r10:00000000 r9:85642380 r8:80275f90 r7:df98de88 r6:846e8c00 r5:84a8fc00 r4:85654a00 [<8027e270>] (kthread) from [<80200114>] (ret_from_fork+0x14/0x20 arch/arm/kernel/entry-common.S:137) Exception stack(0xecb15fb0 to 0xecb15ff8) 5fa0: 00000000 00000000 00000000 00000000 5fc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 5fe0: 00000000 00000000 00000000 00000000 00000013 00000000 r9:00000000 r8:00000000 r7:00000000 r6:00000000 r5:8027e270 r4:85654a00 INFO: task kworker/0:9:10566 blocked for more than 438 seconds. Tainted: G L syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/0:9 state:D stack:0 pid:10566 tgid:10566 ppid:2 task_flags:0x4208060 flags:0x00000000 Workqueue: events bpf_prog_free_deferred Call trace: [<81ab4290>] (__schedule) from [<81ab5618>] (__schedule_loop kernel/sched/core.c:6989 [inline]) [<81ab4290>] (__schedule) from [<81ab5618>] (schedule+0x2c/0x134 kernel/sched/core.c:7004) r10:dfccdda4 r9:00000000 r8:60000113 r7:dfccddac r6:82917934 r5:850d0c00 r4:850d0c00 [<81ab55ec>] (schedule) from [<81ab57a4>] (schedule_preempt_disabled+0x18/0x24 kernel/sched/core.c:7061) r5:850d0c00 r4:82917930 [<81ab578c>] (schedule_preempt_disabled) from [<81ab8d60>] (__mutex_lock_common kernel/locking/mutex.c:692 [inline]) [<81ab578c>] (schedule_preempt_disabled) from [<81ab8d60>] (__mutex_lock.constprop.0+0x584/0xf10 kernel/locking/mutex.c:776) [<81ab87dc>] (__mutex_lock.constprop.0) from [<81ab97c0>] (__mutex_lock_slowpath+0x14/0x18 kernel/locking/mutex.c:1065) r10:8280c82c r9:00000001 r8:00000000 r7:ffffffff r6:00000000 r5:dfccde28 r4:00000000 [<81ab97ac>] (__mutex_lock_slowpath) from [<81ab9800>] (mutex_lock+0x3c/0x40 kernel/locking/mutex.c:290) [<81ab97c4>] (mutex_lock) from [<804f1c14>] (_vm_unmap_aliases+0x5c/0x238 mm/vmalloc.c:2944) [<804f1bb8>] (_vm_unmap_aliases) from [<804f58fc>] (vm_reset_perms mm/vmalloc.c:3375 [inline]) [<804f1bb8>] (_vm_unmap_aliases) from [<804f58fc>] (vfree+0x16c/0x210 mm/vmalloc.c:3454) r10:8302b005 r9:00000001 r8:00000000 r7:ffffffff r6:00000000 r5:86f447c0 r4:00000000 [<804f5790>] (vfree) from [<805608f8>] (execmem_free+0x30/0x50 mm/execmem.c:503) r9:83026970 r8:850d0c00 r7:00000000 r6:8302b000 r5:00001000 r4:7f2b4000 [<805608c8>] (execmem_free) from [<803c8054>] (bpf_jit_free_exec+0x10/0x14 kernel/bpf/core.c:1071) r5:00001000 r4:dfc8f000 [<803c8044>] (bpf_jit_free_exec) from [<803c8434>] (bpf_jit_binary_free kernel/bpf/core.c:1117 [inline]) [<803c8044>] (bpf_jit_free_exec) from [<803c8434>] (bpf_jit_free+0x64/0xe0 kernel/bpf/core.c:1240) [<803c83d0>] (bpf_jit_free) from [<803c9368>] (bpf_prog_free_deferred+0x148/0x160 kernel/bpf/core.c:2941) r5:8606ab94 r4:8606ab94 [<803c9220>] (bpf_prog_free_deferred) from [<802753c8>] (process_one_work+0x1b8/0x4fc kernel/workqueue.c:3275) r7:dddcfc80 r6:8302b000 r5:8606ab94 r4:870e5680 [<80275210>] (process_one_work) from [<802760fc>] (process_scheduled_works kernel/workqueue.c:3358 [inline]) [<80275210>] (process_one_work) from [<802760fc>] (worker_thread+0x16c/0x318 kernel/workqueue.c:3439) r10:00000000 r9:870e56ac r8:850d0c00 r7:82804d80 r6:dddcfca0 r5:dddcfc80 r4:870e5680 [<80275f90>] (worker_thread) from [<8027e388>] (kthread+0x118/0x138 kernel/kthread.c:467) r10:00000000 r9:870e5680 r8:80275f90 r7:dfb8de88 r6:850d0c00 r5:870dbc00 r4:84da2d80 [<8027e270>] (kthread) from [<80200114>] (ret_from_fork+0x14/0x20 arch/arm/kernel/entry-common.S:137) Exception stack(0xdfccdfb0 to 0xdfccdff8) dfa0: 00000000 00000000 00000000 00000000 dfc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 dfe0: 00000000 00000000 00000000 00000000 00000013 00000000 r9:00000000 r8:00000000 r7:00000000 r6:00000000 r5:8027e270 r4:84da2d80 INFO: task kworker/0:9:10566 is blocked on a mutex likely owned by task kworker/0:1:9223. task:kworker/0:1 state:R running task stack:0 pid:9223 tgid:9223 ppid:2 task_flags:0x4208060 flags:0x00000000 Workqueue: events bpf_prog_free_deferred Call trace: [<81ab4290>] (__schedule) from [<81ab5a50>] (preempt_schedule_irq+0x40/0xa8 kernel/sched/core.c:7234) r10:8280c880 r9:846e8c00 r8:80200c04 r7:ecb15d7c r6:ffffffff r5:846e8c00 r4:00000000 [<81ab5a10>] (preempt_schedule_irq) from [<80200c24>] (svc_preempt+0x8/0x18) Exception stack(0xecb15d48 to 0xecb15d90) 5d40: a64cf000 ed373000 00000000 80238550 82ad0620 82ad1264 5d60: 7f2aa000 ed373000 00000000 00000001 8280c880 ecb15dbc ed373000 ecb15d98 5d80: 8022f4bc 80238568 80000013 ffffffff r5:80000013 r4:80238568 [<8022f45c>] (flush_tlb_kernel_range) from [<804f19c8>] (__purge_vmap_area_lazy+0x260/0x450 mm/vmalloc.c:2369) [<804f1768>] (__purge_vmap_area_lazy) from [<804f1da0>] (_vm_unmap_aliases+0x1e8/0x238 mm/vmalloc.c:2983) r10:00000000 r9:ecb15de0 r8:00000000 r7:ffffffff r6:00000008 r5:ecb15e28 r4:ecb15de0 [<804f1bb8>] (_vm_unmap_aliases) from [<804f58fc>] (vm_reset_perms mm/vmalloc.c:3375 [inline]) [<804f1bb8>] (_vm_unmap_aliases) from [<804f58fc>] (vfree+0x16c/0x210 mm/vmalloc.c:3454) r10:8302b005 r9:00000001 r8:00000000 r7:ffffffff r6:00000000 r5:84979580 r4:00000000 [<804f5790>] (vfree) from [<805608f8>] (execmem_free+0x30/0x50 mm/execmem.c:503) r9:83026970 r8:846e8c00 r7:00000000 r6:8302b000 r5:00001000 r4:7f2b2000 [<805608c8>] (execmem_free) from [<803c8054>] (bpf_jit_free_exec+0x10/0x14 kernel/bpf/core.c:1071) r5:00001000 r4:dfb8d000 [<803c8044>] (bpf_jit_free_exec) from [<803c8434>] (bpf_jit_binary_free kernel/bpf/core.c:1117 [inline]) [<803c8044>] (bpf_jit_free_exec) from [<803c8434>] (bpf_jit_free+0x64/0xe0 kernel/bpf/core.c:1240) [<803c83d0>] (bpf_jit_free) from [<803c9368>] (bpf_prog_free_deferred+0x148/0x160 kernel/bpf/core.c:2941) r5:86004394 r4:86004394 [<803c9220>] (bpf_prog_free_deferred) from [<802753c8>] (process_one_work+0x1b8/0x4fc kernel/workqueue.c:3275) r7:dddcfc80 r6:8302b000 r5:86004394 r4:85642380 [<80275210>] (process_one_work) from [<802760fc>] (process_scheduled_works kernel/workqueue.c:3358 [inline]) [<80275210>] (process_one_work) from [<802760fc>] (worker_thread+0x16c/0x318 kernel/workqueue.c:3439) r10:00000000 r9:856423ac r8:846e8c00 r7:82804d80 r6:dddcfca0 r5:dddcfc80 r4:85642380 [<80275f90>] (worker_thread) from [<8027e388>] (kthread+0x118/0x138 kernel/kthread.c:467) r10:00000000 r9:85642380 r8:80275f90 r7:df98de88 r6:846e8c00 r5:84a8fc00 r4:85654a00 [<8027e270>] (kthread) from [<80200114>] (ret_from_fork+0x14/0x20 arch/arm/kernel/entry-common.S:137) Exception stack(0xecb15fb0 to 0xecb15ff8) 5fa0: 00000000 00000000 00000000 00000000 5fc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 5fe0: 00000000 00000000 00000000 00000000 00000013 00000000 r9:00000000 r8:00000000 r7:00000000 r6:00000000 r5:8027e270 r4:85654a00 INFO: task kworker/0:10:10576 blocked for more than 440 seconds. Tainted: G L syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/0:10 state:D stack:0 pid:10576 tgid:10576 ppid:2 task_flags:0x4208060 flags:0x00000000 Workqueue: events bpf_prog_free_deferred Call trace: [<81ab4290>] (__schedule) from [<81ab5618>] (__schedule_loop kernel/sched/core.c:6989 [inline]) [<81ab4290>] (__schedule) from [<81ab5618>] (schedule+0x2c/0x134 kernel/sched/core.c:7004) r10:dfd31da4 r9:00000000 r8:60000013 r7:dfd31dac r6:82917934 r5:84759800 r4:84759800 [<81ab55ec>] (schedule) from [<81ab57a4>] (schedule_preempt_disabled+0x18/0x24 kernel/sched/core.c:7061) r5:84759800 r4:82917930 [<81ab578c>] (schedule_preempt_disabled) from [<81ab8d60>] (__mutex_lock_common kernel/locking/mutex.c:692 [inline]) [<81ab578c>] (schedule_preempt_disabled) from [<81ab8d60>] (__mutex_lock.constprop.0+0x584/0xf10 kernel/locking/mutex.c:776) [<81ab87dc>] (__mutex_lock.constprop.0) from [<81ab97c0>] (__mutex_lock_slowpath+0x14/0x18 kernel/locking/mutex.c:1065) r10:8280c82c r9:00000001 r8:00000000 r7:ffffffff r6:00000000 r5:dfd31e28 r4:00000000 [<81ab97ac>] (__mutex_lock_slowpath) from [<81ab9800>] (mutex_lock+0x3c/0x40 kernel/locking/mutex.c:290) [<81ab97c4>] (mutex_lock) from [<804f1c14>] (_vm_unmap_aliases+0x5c/0x238 mm/vmalloc.c:2944) [<804f1bb8>] (_vm_unmap_aliases) from [<804f58fc>] (vm_reset_perms mm/vmalloc.c:3375 [inline]) [<804f1bb8>] (_vm_unmap_aliases) from [<804f58fc>] (vfree+0x16c/0x210 mm/vmalloc.c:3454) r10:8302b005 r9:00000001 r8:00000000 r7:ffffffff r6:00000000 r5:8641c0c0 r4:00000000 [<804f5790>] (vfree) from [<805608f8>] (execmem_free+0x30/0x50 mm/execmem.c:503) r9:83026970 r8:84759800 r7:00000000 r6:8302b000 r5:00001000 r4:7f2b8000 [<805608c8>] (execmem_free) from [<803c8054>] (bpf_jit_free_exec+0x10/0x14 kernel/bpf/core.c:1071) r5:00001000 r4:dfcf3000 [<803c8044>] (bpf_jit_free_exec) from [<803c8434>] (bpf_jit_binary_free kernel/bpf/core.c:1117 [inline]) [<803c8044>] (bpf_jit_free_exec) from [<803c8434>] (bpf_jit_free+0x64/0xe0 kernel/bpf/core.c:1240) [<803c83d0>] (bpf_jit_free) from [<803c9368>] (bpf_prog_free_deferred+0x148/0x160 kernel/bpf/core.c:2941) r5:8633fb94 r4:8633fb94 [<803c9220>] (bpf_prog_free_deferred) from [<802753c8>] (process_one_work+0x1b8/0x4fc kernel/workqueue.c:3275) r7:dddcfc80 r6:8302b000 r5:8633fb94 r4:870db300 [<80275210>] (process_one_work) from [<802760fc>] (process_scheduled_works kernel/workqueue.c:3358 [inline]) [<80275210>] (process_one_work) from [<802760fc>] (worker_thread+0x16c/0x318 kernel/workqueue.c:3439) r10:dddcfc80 r9:870db32c r8:84759800 r7:82804d80 r6:dddcfca0 r5:dddcfc80 r4:870db300 [<80275f90>] (worker_thread) from [<8027e388>] (kthread+0x118/0x138 kernel/kthread.c:467) r10:00000000 r9:870db300 r8:80275f90 r7:df98de88 r6:84759800 r5:856e2080 r4:8657d9c0 [<8027e270>] (kthread) from [<80200114>] (ret_from_fork+0x14/0x20 arch/arm/kernel/entry-common.S:137) Exception stack(0xdfd31fb0 to 0xdfd31ff8) 1fa0: 00000000 00000000 00000000 00000000 1fc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 1fe0: 00000000 00000000 00000000 00000000 00000013 00000000 r9:00000000 r8:00000000 r7:00000000 r6:00000000 r5:8027e270 r4:8657d9c0 INFO: task kworker/0:10:10576 is blocked on a mutex likely owned by task kworker/0:1:9223. task:kworker/0:1 state:R running task stack:0 pid:9223 tgid:9223 ppid:2 task_flags:0x4208060 flags:0x00000000 Workqueue: events bpf_prog_free_deferred Call trace: [<81ab4290>] (__schedule) from [<81ab5a50>] (preempt_schedule_irq+0x40/0xa8 kernel/sched/core.c:7234) r10:8280c880 r9:846e8c00 r8:80200c04 r7:ecb15d7c r6:ffffffff r5:846e8c00 r4:00000000 [<81ab5a10>] (preempt_schedule_irq) from [<80200c24>] (svc_preempt+0x8/0x18) Exception stack(0xecb15d48 to 0xecb15d90) 5d40: a6a1f000 ed373000 00000000 80238550 82ad0620 82ad1264 5d60: 7f2aa000 ed373000 00000000 00000001 8280c880 ecb15dbc ed373000 ecb15d98 5d80: 8022f4bc 80238568 80000013 ffffffff r5:80000013 r4:80238568 [<8022f45c>] (flush_tlb_kernel_range) from [<804f19c8>] (__purge_vmap_area_lazy+0x260/0x450 mm/vmalloc.c:2369) [<804f1768>] (__purge_vmap_area_lazy) from [<804f1da0>] (_vm_unmap_aliases+0x1e8/0x238 mm/vmalloc.c:2983) r10:00000000 r9:ecb15de0 r8:00000000 r7:ffffffff r6:00000008 r5:ecb15e28 r4:ecb15de0 [<804f1bb8>] (_vm_unmap_aliases) from [<804f58fc>] (vm_reset_perms mm/vmalloc.c:3375 [inline]) [<804f1bb8>] (_vm_unmap_aliases) from [<804f58fc>] (vfree+0x16c/0x210 mm/vmalloc.c:3454) r10:8302b005 r9:00000001 r8:00000000 r7:ffffffff r6:00000000 r5:84979580 r4:00000000 [<804f5790>] (vfree) from [<805608f8>] (execmem_free+0x30/0x50 mm/execmem.c:503) r9:83026970 r8:846e8c00 r7:00000000 r6:8302b000 r5:00001000 r4:7f2b2000 [<805608c8>] (execmem_free) from [<803c8054>] (bpf_jit_free_exec+0x10/0x14 kernel/bpf/core.c:1071) r5:00001000 r4:dfb8d000 [<803c8044>] (bpf_jit_free_exec) from [<803c8434>] (bpf_jit_binary_free kernel/bpf/core.c:1117 [inline]) [<803c8044>] (bpf_jit_free_exec) from [<803c8434>] (bpf_jit_free+0x64/0xe0 kernel/bpf/core.c:1240) [<803c83d0>] (bpf_jit_free) from [<803c9368>] (bpf_prog_free_deferred+0x148/0x160 kernel/bpf/core.c:2941) r5:86004394 r4:86004394 [<803c9220>] (bpf_prog_free_deferred) from [<802753c8>] (process_one_work+0x1b8/0x4fc kernel/workqueue.c:3275) r7:dddcfc80 r6:8302b000 r5:86004394 r4:85642380 [<80275210>] (process_one_work) from [<802760fc>] (process_scheduled_works kernel/workqueue.c:3358 [inline]) [<80275210>] (process_one_work) from [<802760fc>] (worker_thread+0x16c/0x318 kernel/workqueue.c:3439) r10:00000000 r9:856423ac r8:846e8c00 r7:82804d80 r6:dddcfca0 r5:dddcfc80 r4:85642380 [<80275f90>] (worker_thread) from [<8027e388>] (kthread+0x118/0x138 kernel/kthread.c:467) r10:00000000 r9:85642380 r8:80275f90 r7:df98de88 r6:846e8c00 r5:84a8fc00 r4:85654a00 [<8027e270>] (kthread) from [<80200114>] (ret_from_fork+0x14/0x20 arch/arm/kernel/entry-common.S:137) Exception stack(0xecb15fb0 to 0xecb15ff8) 5fa0: 00000000 00000000 00000000 00000000 5fc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 5fe0: 00000000 00000000 00000000 00000000 00000013 00000000 r9:00000000 r8:00000000 r7:00000000 r6:00000000 r5:8027e270 r4:85654a00 INFO: task kworker/0:2:13126 blocked for more than 449 seconds. Tainted: G L syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/0:2 state:D stack:0 pid:13126 tgid:13126 ppid:2 task_flags:0x4208060 flags:0x00000000 Workqueue: events bpf_prog_free_deferred Call trace: [<81ab4290>] (__schedule) from [<81ab5618>] (__schedule_loop kernel/sched/core.c:6989 [inline]) [<81ab4290>] (__schedule) from [<81ab5618>] (schedule+0x2c/0x134 kernel/sched/core.c:7004) r10:dfa55da4 r9:00000000 r8:60030013 r7:dfa55dac r6:82917934 r5:8503a400 r4:8503a400 [<81ab55ec>] (schedule) from [<81ab57a4>] (schedule_preempt_disabled+0x18/0x24 kernel/sched/core.c:7061) r5:8503a400 r4:82917930 [<81ab578c>] (schedule_preempt_disabled) from [<81ab8d60>] (__mutex_lock_common kernel/locking/mutex.c:692 [inline]) [<81ab578c>] (schedule_preempt_disabled) from [<81ab8d60>] (__mutex_lock.constprop.0+0x584/0xf10 kernel/locking/mutex.c:776) [<81ab87dc>] (__mutex_lock.constprop.0) from [<81ab97c0>] (__mutex_lock_slowpath+0x14/0x18 kernel/locking/mutex.c:1065) r10:8280c82c r9:00000001 r8:00000000 r7:ffffffff r6:00000000 r5:dfa55e28 r4:00000000 [<81ab97ac>] (__mutex_lock_slowpath) from [<81ab9800>] (mutex_lock+0x3c/0x40 kernel/locking/mutex.c:290) [<81ab97c4>] (mutex_lock) from [<804f1c14>] (_vm_unmap_aliases+0x5c/0x238 mm/vmalloc.c:2944) [<804f1bb8>] (_vm_unmap_aliases) from [<804f58fc>] (vm_reset_perms mm/vmalloc.c:3375 [inline]) [<804f1bb8>] (_vm_unmap_aliases) from [<804f58fc>] (vfree+0x16c/0x210 mm/vmalloc.c:3454) r10:8302b005 r9:00000001 r8:00000000 r7:ffffffff r6:00000000 r5:854869c0 r4:00000000 [<804f5790>] (vfree) from [<805608f8>] (execmem_free+0x30/0x50 mm/execmem.c:503) r9:83026970 r8:8503a400 r7:00000000 r6:8302b000 r5:00001000 r4:7f2ba000 [<805608c8>] (execmem_free) from [<803c8054>] (bpf_jit_free_exec+0x10/0x14 kernel/bpf/core.c:1071) r5:00001000 r4:dfd27000 [<803c8044>] (bpf_jit_free_exec) from [<803c8434>] (bpf_jit_binary_free kernel/bpf/core.c:1117 [inline]) [<803c8044>] (bpf_jit_free_exec) from [<803c8434>] (bpf_jit_free+0x64/0xe0 kernel/bpf/core.c:1240) [<803c83d0>] (bpf_jit_free) from [<803c9368>] (bpf_prog_free_deferred+0x148/0x160 kernel/bpf/core.c:2941) r5:861d0b94 r4:861d0b94 [<803c9220>] (bpf_prog_free_deferred) from [<802753c8>] (process_one_work+0x1b8/0x4fc kernel/workqueue.c:3275) r7:dddcfc80 r6:8302b000 r5:861d0b94 r4:84977400 [<80275210>] (process_one_work) from [<802760fc>] (process_scheduled_works kernel/workqueue.c:3358 [inline]) [<80275210>] (process_one_work) from [<802760fc>] (worker_thread+0x16c/0x318 kernel/workqueue.c:3439) r10:00000000 r9:8497742c r8:8503a400 r7:82804d80 r6:dddcfca0 r5:dddcfc80 r4:84977400 [<80275f90>] (worker_thread) from [<8027e388>] (kthread+0x118/0x138 kernel/kthread.c:467) r10:00000000 r9:84977400 r8:80275f90 r7:dfd31e88 r6:8503a400 r5:85734280 r4:872bd0c0 [<8027e270>] (kthread) from [<80200114>] (ret_from_fork+0x14/0x20 arch/arm/kernel/entry-common.S:137) Exception stack(0xdfa55fb0 to 0xdfa55ff8) 5fa0: 00000000 00000000 00000000 00000000 5fc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 5fe0: 00000000 00000000 00000000 00000000 00000013 00000000 r9:00000000 r8:00000000 r7:00000000 r6:00000000 r5:8027e270 r4:872bd0c0 INFO: task kworker/0:2:13126 is blocked on a mutex likely owned by task kworker/0:1:9223. task:kworker/0:1 state:R running task stack:0 pid:9223 tgid:9223 ppid:2 task_flags:0x4208060 flags:0x00000000 Workqueue: events bpf_prog_free_deferred Call trace: [<81ab4290>] (__schedule) from [<81ab5a50>] (preempt_schedule_irq+0x40/0xa8 kernel/sched/core.c:7234) r10:8280c880 r9:846e8c00 r8:80200c04 r7:ecb15d7c r6:ffffffff r5:846e8c00 r4:00000000 [<81ab5a10>] (preempt_schedule_irq) from [<80200c24>] (svc_preempt+0x8/0x18) Exception stack(0xecb15d48 to 0xecb15d90) 5d40: a83c0000 ed373000 00000000 80238550 82ad0620 82ad1264 5d60: 7f2aa000 ed373000 00000000 00000001 8280c880 ecb15dbc ed373000 ecb15d98 5d80: 8022f4bc 80238568 80000013 ffffffff r5:80000013 r4:80238568 [<8022f45c>] (flush_tlb_kernel_range) from [<804f19c8>] (__purge_vmap_area_lazy+0x260/0x450 mm/vmalloc.c:2369) [<804f1768>] (__purge_vmap_area_lazy) from [<804f1da0>] (_vm_unmap_aliases+0x1e8/0x238 mm/vmalloc.c:2983) r10:00000000 r9:ecb15de0 r8:00000000 r7:ffffffff r6:00000008 r5:ecb15e28 r4:ecb15de0 [<804f1bb8>] (_vm_unmap_aliases) from [<804f58fc>] (vm_reset_perms mm/vmalloc.c:3375 [inline]) [<804f1bb8>] (_vm_unmap_aliases) from [<804f58fc>] (vfree+0x16c/0x210 mm/vmalloc.c:3454) r10:8302b005 r9:00000001 r8:00000000 r7:ffffffff r6:00000000 r5:84979580 r4:00000000 [<804f5790>] (vfree) from [<805608f8>] (execmem_free+0x30/0x50 mm/execmem.c:503) r9:83026970 r8:846e8c00 r7:00000000 r6:8302b000 r5:00001000 r4:7f2b2000 [<805608c8>] (execmem_free) from [<803c8054>] (bpf_jit_free_exec+0x10/0x14 kernel/bpf/core.c:1071) r5:00001000 r4:dfb8d000 [<803c8044>] (bpf_jit_free_exec) from [<803c8434>] (bpf_jit_binary_free kernel/bpf/core.c:1117 [inline]) [<803c8044>] (bpf_jit_free_exec) from [<803c8434>] (bpf_jit_free+0x64/0xe0 kernel/bpf/core.c:1240) [<803c83d0>] (bpf_jit_free) from [<803c9368>] (bpf_prog_free_deferred+0x148/0x160 kernel/bpf/core.c:2941) r5:86004394 r4:86004394 [<803c9220>] (bpf_prog_free_deferred) from [<802753c8>] (process_one_work+0x1b8/0x4fc kernel/workqueue.c:3275) r7:dddcfc80 r6:8302b000 r5:86004394 r4:85642380 [<80275210>] (process_one_work) from [<802760fc>] (process_scheduled_works kernel/workqueue.c:3358 [inline]) [<80275210>] (process_one_work) from [<802760fc>] (worker_thread+0x16c/0x318 kernel/workqueue.c:3439) r10:00000000 r9:856423ac r8:846e8c00 r7:82804d80 r6:dddcfca0 r5:dddcfc80 r4:85642380 [<80275f90>] (worker_thread) from [<8027e388>] (kthread+0x118/0x138 kernel/kthread.c:467) r10:00000000 r9:85642380 r8:80275f90 r7:df98de88 r6:846e8c00 r5:84a8fc00 r4:85654a00 [<8027e270>] (kthread) from [<80200114>] (ret_from_fork+0x14/0x20 arch/arm/kernel/entry-common.S:137) Exception stack(0xecb15fb0 to 0xecb15ff8) 5fa0: 00000000 00000000 00000000 00000000 5fc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 5fe0: 00000000 00000000 00000000 00000000 00000013 00000000 r9:00000000 r8:00000000 r7:00000000 r6:00000000 r5:8027e270 r4:85654a00 INFO: task kworker/0:8:13132 blocked for more than 428 seconds. Tainted: G L syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/0:8 state:D stack:0 pid:13132 tgid:13132 ppid:2 task_flags:0x4208060 flags:0x00000000 Workqueue: events bpf_prog_free_deferred Call trace: [<81ab4290>] (__schedule) from [<81ab5618>] (__schedule_loop kernel/sched/core.c:6989 [inline]) [<81ab4290>] (__schedule) from [<81ab5618>] (schedule+0x2c/0x134 kernel/sched/core.c:7004) r10:dfd25da4 r9:00000000 r8:60000113 r7:dfd25dac r6:82917934 r5:8407ec00 r4:8407ec00 [<81ab55ec>] (schedule) from [<81ab57a4>] (schedule_preempt_disabled+0x18/0x24 kernel/sched/core.c:7061) r5:8407ec00 r4:82917930 [<81ab578c>] (schedule_preempt_disabled) from [<81ab8d60>] (__mutex_lock_common kernel/locking/mutex.c:692 [inline]) [<81ab578c>] (schedule_preempt_disabled) from [<81ab8d60>] (__mutex_lock.constprop.0+0x584/0xf10 kernel/locking/mutex.c:776) [<81ab87dc>] (__mutex_lock.constprop.0) from [<81ab97c0>] (__mutex_lock_slowpath+0x14/0x18 kernel/locking/mutex.c:1065) r10:8280c82c r9:00000001 r8:00000000 r7:ffffffff r6:00000000 r5:dfd25e28 r4:00000000 [<81ab97ac>] (__mutex_lock_slowpath) from [<81ab9800>] (mutex_lock+0x3c/0x40 kernel/locking/mutex.c:290) [<81ab97c4>] (mutex_lock) from [<804f1c14>] (_vm_unmap_aliases+0x5c/0x238 mm/vmalloc.c:2944) [<804f1bb8>] (_vm_unmap_aliases) from [<804f58fc>] (vm_reset_perms mm/vmalloc.c:3375 [inline]) [<804f1bb8>] (_vm_unmap_aliases) from [<804f58fc>] (vfree+0x16c/0x210 mm/vmalloc.c:3454) r10:8302b005 r9:00000001 r8:00000000 r7:ffffffff r6:00000000 r5:854b2280 r4:00000000 [<804f5790>] (vfree) from [<805608f8>] (execmem_free+0x30/0x50 mm/execmem.c:503) r9:83026970 r8:8407ec00 r7:00000000 r6:8302b000 r5:00001000 r4:7f2aa000 [<805608c8>] (execmem_free) from [<803c8054>] (bpf_jit_free_exec+0x10/0x14 kernel/bpf/core.c:1071) r5:00001000 r4:e0279000 [<803c8044>] (bpf_jit_free_exec) from [<803c8434>] (bpf_jit_binary_free kernel/bpf/core.c:1117 [inline]) [<803c8044>] (bpf_jit_free_exec) from [<803c8434>] (bpf_jit_free+0x64/0xe0 kernel/bpf/core.c:1240) [<803c83d0>] (bpf_jit_free) from [<803c9368>] (bpf_prog_free_deferred+0x148/0x160 kernel/bpf/core.c:2941) r5:855d5b94 r4:855d5b94 [<803c9220>] (bpf_prog_free_deferred) from [<802753c8>] (process_one_work+0x1b8/0x4fc kernel/workqueue.c:3275) r7:dddcfc80 r6:8302b000 r5:855d5b94 r4:84975e80 [<80275210>] (process_one_work) from [<802760fc>] (process_scheduled_works kernel/workqueue.c:3358 [inline]) [<80275210>] (process_one_work) from [<802760fc>] (worker_thread+0x16c/0x318 kernel/workqueue.c:3439) r10:dddcfc80 r9:84975eac r8:8407ec00 r7:82804d80 r6:dddcfca0 r5:dddcfc80 r4:84975e80 [<80275f90>] (worker_thread) from [<8027e388>] (kthread+0x118/0x138 kernel/kthread.c:467) r10:00000000 r9:84975e80 r8:80275f90 r7:df83de88 r6:8407ec00 r5:856c7000 r4:8641c380 [<8027e270>] (kthread) from [<80200114>] (ret_from_fork+0x14/0x20 arch/arm/kernel/entry-common.S:137) Exception stack(0xdfd25fb0 to 0xdfd25ff8) 5fa0: 00000000 00000000 00000000 00000000 5fc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 5fe0: 00000000 00000000 00000000 00000000 00000013 00000000 r9:00000000 r8:00000000 r7:00000000 r6:00000000 r5:8027e270 r4:8641c380 INFO: task kworker/0:8:13132 is blocked on a mutex likely owned by task kworker/0:1:9223. task:kworker/0:1 state:R running task stack:0 pid:9223 tgid:9223 ppid:2 task_flags:0x4208060 flags:0x00000000 Workqueue: events bpf_prog_free_deferred Call trace: [<81ab4290>] (__schedule) from [<81ab5a50>] (preempt_schedule_irq+0x40/0xa8 kernel/sched/core.c:7234) r10:8280c880 r9:846e8c00 r8:80200c04 r7:ecb15d7c r6:ffffffff r5:846e8c00 r4:00000000 [<81ab5a10>] (preempt_schedule_irq) from [<80200c24>] (svc_preempt+0x8/0x18) Exception stack(0xecb15d48 to 0xecb15d90) 5d40: a83c0000 ed373000 00000000 80238550 82ad0620 82ad1264 5d60: 7f2aa000 ed373000 00000000 00000001 8280c880 ecb15dbc ed373000 ecb15d98 5d80: 8022f4bc 80238568 80000013 ffffffff r5:80000013 r4:80238568 [<8022f45c>] (flush_tlb_kernel_range) from [<804f19c8>] (__purge_vmap_area_lazy+0x260/0x450 mm/vmalloc.c:2369) [<804f1768>] (__purge_vmap_area_lazy) from [<804f1da0>] (_vm_unmap_aliases+0x1e8/0x238 mm/vmalloc.c:2983) r10:00000000 r9:ecb15de0 r8:00000000 r7:ffffffff r6:00000008 r5:ecb15e28 r4:ecb15de0 [<804f1bb8>] (_vm_unmap_aliases) from [<804f58fc>] (vm_reset_perms mm/vmalloc.c:3375 [inline]) [<804f1bb8>] (_vm_unmap_aliases) from [<804f58fc>] (vfree+0x16c/0x210 mm/vmalloc.c:3454) r10:8302b005 r9:00000001 r8:00000000 r7:ffffffff r6:00000000 r5:84979580 r4:00000000 [<804f5790>] (vfree) from [<805608f8>] (execmem_free+0x30/0x50 mm/execmem.c:503) r9:83026970 r8:846e8c00 r7:00000000 r6:8302b000 r5:00001000 r4:7f2b2000 [<805608c8>] (execmem_free) from [<803c8054>] (bpf_jit_free_exec+0x10/0x14 kernel/bpf/core.c:1071) r5:00001000 r4:dfb8d000 [<803c8044>] (bpf_jit_free_exec) from [<803c8434>] (bpf_jit_binary_free kernel/bpf/core.c:1117 [inline]) [<803c8044>] (bpf_jit_free_exec) from [<803c8434>] (bpf_jit_free+0x64/0xe0 kernel/bpf/core.c:1240) [<803c83d0>] (bpf_jit_free) from [<803c9368>] (bpf_prog_free_deferred+0x148/0x160 kernel/bpf/core.c:2941) r5:86004394 r4:86004394 [<803c9220>] (bpf_prog_free_deferred) from [<802753c8>] (process_one_work+0x1b8/0x4fc kernel/workqueue.c:3275) r7:dddcfc80 r6:8302b000 r5:86004394 r4:85642380 [<80275210>] (process_one_work) from [<802760fc>] (process_scheduled_works kernel/workqueue.c:3358 [inline]) [<80275210>] (process_one_work) from [<802760fc>] (worker_thread+0x16c/0x318 kernel/workqueue.c:3439) r10:00000000 r9:856423ac r8:846e8c00 r7:82804d80 r6:dddcfca0 r5:dddcfc80 r4:85642380 [<80275f90>] (worker_thread) from [<8027e388>] (kthread+0x118/0x138 kernel/kthread.c:467) r10:00000000 r9:85642380 r8:80275f90 r7:df98de88 r6:846e8c00 r5:84a8fc00 r4:85654a00 [<8027e270>] (kthread) from [<80200114>] (ret_from_fork+0x14/0x20 arch/arm/kernel/entry-common.S:137) Exception stack(0xecb15fb0 to 0xecb15ff8) 5fa0: 00000000 00000000 00000000 00000000 5fc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 5fe0: 00000000 00000000 00000000 00000000 00000013 00000000 r9:00000000 r8:00000000 r7:00000000 r6:00000000 r5:8027e270 r4:85654a00 INFO: task kworker/0:11:13141 blocked for more than 449 seconds. Tainted: G L syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/0:11 state:D stack:0 pid:13141 tgid:13141 ppid:2 task_flags:0x4208060 flags:0x00000000 Workqueue: events bpf_prog_free_deferred Call trace: [<81ab4290>] (__schedule) from [<81ab5618>] (__schedule_loop kernel/sched/core.c:6989 [inline]) [<81ab4290>] (__schedule) from [<81ab5618>] (schedule+0x2c/0x134 kernel/sched/core.c:7004) r10:e0119da4 r9:00000000 r8:60030013 r7:e0119dac r6:82917934 r5:831e0c00 r4:831e0c00 [<81ab55ec>] (schedule) from [<81ab57a4>] (schedule_preempt_disabled+0x18/0x24 kernel/sched/core.c:7061) r5:831e0c00 r4:82917930 [<81ab578c>] (schedule_preempt_disabled) from [<81ab8d60>] (__mutex_lock_common kernel/locking/mutex.c:692 [inline]) [<81ab578c>] (schedule_preempt_disabled) from [<81ab8d60>] (__mutex_lock.constprop.0+0x584/0xf10 kernel/locking/mutex.c:776) [<81ab87dc>] (__mutex_lock.constprop.0) from [<81ab97c0>] (__mutex_lock_slowpath+0x14/0x18 kernel/locking/mutex.c:1065) r10:8280c82c r9:00000001 r8:00000000 r7:ffffffff r6:00000000 r5:e0119e28 r4:00000000 [<81ab97ac>] (__mutex_lock_slowpath) from [<81ab9800>] (mutex_lock+0x3c/0x40 kernel/locking/mutex.c:290) [<81ab97c4>] (mutex_lock) from [<804f1c14>] (_vm_unmap_aliases+0x5c/0x238 mm/vmalloc.c:2944) [<804f1bb8>] (_vm_unmap_aliases) from [<804f58fc>] (vm_reset_perms mm/vmalloc.c:3375 [inline]) [<804f1bb8>] (_vm_unmap_aliases) from [<804f58fc>] (vfree+0x16c/0x210 mm/vmalloc.c:3454) r10:8302b005 r9:00000001 r8:00000000 r7:ffffffff r6:00000000 r5:86108280 r4:00000000 [<804f5790>] (vfree) from [<805608f8>] (execmem_free+0x30/0x50 mm/execmem.c:503) r9:83026970 r8:831e0c00 r7:00000000 r6:8302b000 r5:00001000 r4:7f2bc000 [<805608c8>] (execmem_free) from [<803c8054>] (bpf_jit_free_exec+0x10/0x14 kernel/bpf/core.c:1071) r5:00001000 r4:e00c5000 [<803c8044>] (bpf_jit_free_exec) from [<803c8434>] (bpf_jit_binary_free kernel/bpf/core.c:1117 [inline]) [<803c8044>] (bpf_jit_free_exec) from [<803c8434>] (bpf_jit_free+0x64/0xe0 kernel/bpf/core.c:1240) [<803c83d0>] (bpf_jit_free) from [<803c9368>] (bpf_prog_free_deferred+0x148/0x160 kernel/bpf/core.c:2941) r5:8625db94 r4:8625db94 [<803c9220>] (bpf_prog_free_deferred) from [<802753c8>] (process_one_work+0x1b8/0x4fc kernel/workqueue.c:3275) r7:dddcfc80 r6:8302b000 r5:8625db94 r4:84a3fb80 [<80275210>] (process_one_work) from [<802760fc>] (process_scheduled_works kernel/workqueue.c:3358 [inline]) [<80275210>] (process_one_work) from [<802760fc>] (worker_thread+0x16c/0x318 kernel/workqueue.c:3439) r10:00000000 r9:84a3fbac r8:831e0c00 r7:82804d80 r6:dddcfca0 r5:dddcfc80 r4:84a3fb80 [<80275f90>] (worker_thread) from [<8027e388>] (kthread+0x118/0x138 kernel/kthread.c:467) r10:00000000 r9:84a3fb80 r8:80275f90 r7:dfd25e88 r6:831e0c00 r5:84a3ce80 r4:872d3500 [<8027e270>] (kthread) from [<80200114>] (ret_from_fork+0x14/0x20 arch/arm/kernel/entry-common.S:137) Exception stack(0xe0119fb0 to 0xe0119ff8) 9fa0: 00000000 00000000 00000000 00000000 9fc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 9fe0: 00000000 00000000 00000000 00000000 00000013 00000000 r9:00000000 r8:00000000 r7:00000000 r6:00000000 r5:8027e270 r4:872d3500 INFO: task kworker/0:11:13141 is blocked on a mutex likely owned by task kworker/0:1:9223. task:kworker/0:1 state:R running task stack:0 pid:9223 tgid:9223 ppid:2 task_flags:0x4208060 flags:0x00000000 Workqueue: events bpf_prog_free_deferred Call trace: [<81ab4290>] (__schedule) from [<81ab5a50>] (preempt_schedule_irq+0x40/0xa8 kernel/sched/core.c:7234) r10:8280c880 r9:846e8c00 r8:80200c04 r7:ecb15d7c r6:ffffffff r5:846e8c00 r4:00000000 [<81ab5a10>] (preempt_schedule_irq) from [<80200c24>] (svc_preempt+0x8/0x18) Exception stack(0xecb15d48 to 0xecb15d90) 5d40: a83c0000 ed373000 00000000 80238550 82ad0620 82ad1264 5d60: 7f2aa000 ed373000 00000000 00000001 8280c880 ecb15dbc ed373000 ecb15d98 5d80: 8022f4bc 80238568 80000013 ffffffff r5:80000013 r4:80238568 [<8022f45c>] (flush_tlb_kernel_range) from [<804f19c8>] (__purge_vmap_area_lazy+0x260/0x450 mm/vmalloc.c:2369) [<804f1768>] (__purge_vmap_area_lazy) from [<804f1da0>] (_vm_unmap_aliases+0x1e8/0x238 mm/vmalloc.c:2983) r10:00000000 r9:ecb15de0 r8:00000000 r7:ffffffff r6:00000008 r5:ecb15e28 r4:ecb15de0 [<804f1bb8>] (_vm_unmap_aliases) from [<804f58fc>] (vm_reset_perms mm/vmalloc.c:3375 [inline]) [<804f1bb8>] (_vm_unmap_aliases) from [<804f58fc>] (vfree+0x16c/0x210 mm/vmalloc.c:3454) r10:8302b005 r9:00000001 r8:00000000 r7:ffffffff r6:00000000 r5:84979580 r4:00000000 [<804f5790>] (vfree) from [<805608f8>] (execmem_free+0x30/0x50 mm/execmem.c:503) r9:83026970 r8:846e8c00 r7:00000000 r6:8302b000 r5:00001000 r4:7f2b2000 [<805608c8>] (execmem_free) from [<803c8054>] (bpf_jit_free_exec+0x10/0x14 kernel/bpf/core.c:1071) r5:00001000 r4:dfb8d000 [<803c8044>] (bpf_jit_free_exec) from [<803c8434>] (bpf_jit_binary_free kernel/bpf/core.c:1117 [inline]) [<803c8044>] (bpf_jit_free_exec) from [<803c8434>] (bpf_jit_free+0x64/0xe0 kernel/bpf/core.c:1240) [<803c83d0>] (bpf_jit_free) from [<803c9368>] (bpf_prog_free_deferred+0x148/0x160 kernel/bpf/core.c:2941) r5:86004394 r4:86004394 [<803c9220>] (bpf_prog_free_deferred) from [<802753c8>] (process_one_work+0x1b8/0x4fc kernel/workqueue.c:3275) r7:dddcfc80 r6:8302b000 r5:86004394 r4:85642380 [<80275210>] (process_one_work) from [<802760fc>] (process_scheduled_works kernel/workqueue.c:3358 [inline]) [<80275210>] (process_one_work) from [<802760fc>] (worker_thread+0x16c/0x318 kernel/workqueue.c:3439) r10:00000000 r9:856423ac r8:846e8c00 r7:82804d80 r6:dddcfca0 r5:dddcfc80 r4:85642380 [<80275f90>] (worker_thread) from [<8027e388>] (kthread+0x118/0x138 kernel/kthread.c:467) r10:00000000 r9:85642380 r8:80275f90 r7:df98de88 r6:846e8c00 r5:84a8fc00 r4:85654a00 [<8027e270>] (kthread) from [<80200114>] (ret_from_fork+0x14/0x20 arch/arm/kernel/entry-common.S:137) Exception stack(0xecb15fb0 to 0xecb15ff8) 5fa0: 00000000 00000000 00000000 00000000 5fc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 5fe0: 00000000 00000000 00000000 00000000 00000013 00000000 r9:00000000 r8:00000000 r7:00000000 r6:00000000 r5:8027e270 r4:85654a00 NMI backtrace for cpu 1 CPU: 1 UID: 0 PID: 29 Comm: khungtaskd Tainted: G L syzkaller #0 PREEMPT Tainted: [L]=SOFTLOCKUP Hardware name: ARM-Versatile Express Call trace: [<802019e8>] (dump_backtrace) from [<80201adc>] (show_stack+0x18/0x1c arch/arm/kernel/traps.c:257) r7:600d0093 r6:600d0093 r5:822a1ce0 r4:00000000 [<80201ac4>] (show_stack) from [<8021e1c4>] (__dump_stack lib/dump_stack.c:94 [inline]) [<80201ac4>] (show_stack) from [<8021e1c4>] (dump_stack_lvl+0x5c/0x70 lib/dump_stack.c:120) [<8021e168>] (dump_stack_lvl) from [<8021e1f0>] (dump_stack+0x18/0x1c lib/dump_stack.c:129) r7:00000000 r6:000d0013 r5:00000001 r4:00000001 [<8021e1d8>] (dump_stack) from [<81a9de6c>] (nmi_cpu_backtrace+0x150/0x170 lib/nmi_backtrace.c:113) [<81a9dd1c>] (nmi_cpu_backtrace) from [<81a9dfbc>] (nmi_trigger_cpumask_backtrace+0x130/0x1d8 lib/nmi_backtrace.c:62) r7:00000001 r6:8280c550 r5:8281af78 r4:ffffffff [<81a9de8c>] (nmi_trigger_cpumask_backtrace) from [<8022eee0>] (arch_trigger_cpumask_backtrace+0x18/0x1c arch/arm/kernel/smp.c:852) r9:8280c6d8 r8:82ac482c r7:0002a9f6 r6:82804d80 r5:00007f18 r4:00000048 [<8022eec8>] (arch_trigger_cpumask_backtrace) from [<81aa5aac>] (trigger_all_cpu_backtrace include/linux/nmi.h:161 [inline]) [<8022eec8>] (arch_trigger_cpumask_backtrace) from [<81aa5aac>] (__sys_info lib/sys_info.c:157 [inline]) [<8022eec8>] (arch_trigger_cpumask_backtrace) from [<81aa5aac>] (sys_info+0x68/0xa8 lib/sys_info.c:165) [<81aa5a44>] (sys_info) from [<8038050c>] (check_hung_uninterruptible_tasks kernel/hung_task.c:346 [inline]) [<81aa5a44>] (sys_info) from [<8038050c>] (watchdog+0x44c/0x884 kernel/hung_task.c:515) r5:00007f18 r4:83965a24 [<803800c0>] (watchdog) from [<8027e388>] (kthread+0x118/0x138 kernel/kthread.c:467) r10:00000000 r9:00000000 r8:803800c0 r7:df819e60 r6:83168000 r5:830ee680 r4:83329b80 [<8027e270>] (kthread) from [<80200114>] (ret_from_fork+0x14/0x20 arch/arm/kernel/entry-common.S:137) Exception stack(0xdf8d5fb0 to 0xdf8d5ff8) 5fa0: 00000000 00000000 00000000 00000000 5fc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 5fe0: 00000000 00000000 00000000 00000000 00000013 00000000 r9:00000000 r8:00000000 r7:00000000 r6:00000000 r5:8027e270 r4:83329b80 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 UID: 0 PID: 2807 Comm: pr/ttyAMA-1 Tainted: G L syzkaller #0 PREEMPT Tainted: [L]=SOFTLOCKUP Hardware name: ARM-Versatile Express PC is at __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:179 [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:407 [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 : [<81abf258>] lr : [<80aa7478>] psr: 600b0013 sp : eb2f9ec8 ip : eb2f9ed8 fp : eb2f9ed4 r10: 8295a45c r9 : 00000000 r8 : 00000000 r7 : 00000117 r6 : 8295a3c0 r5 : 00000000 r4 : 00000001 r3 : 00002579 r2 : 00000000 r1 : 600b0013 r0 : 8470c440 Flags: nZCv IRQs on FIQs on Mode SVC_32 ISA ARM Segment user Control: 30c5387d Table: 85271b00 DAC: fffffffd Call trace: [<81abf230>] (_raw_spin_unlock_irqrestore) from [<80aa7478>] (spin_unlock_irqrestore include/linux/spinlock.h:407 [inline]) [<81abf230>] (_raw_spin_unlock_irqrestore) from [<80aa7478>] (__uart_port_unlock_irqrestore include/linux/serial_core.h:616 [inline]) [<81abf230>] (_raw_spin_unlock_irqrestore) from [<80aa7478>] (pl011_console_device_unlock+0x20/0x24 drivers/tty/serial/amba-pl011.c:2603) [<80aa7458>] (pl011_console_device_unlock) from [<802e3f70>] (nbcon_emit_one+0x88/0x100 kernel/printk/nbcon.c:1165) [<802e3ee8>] (nbcon_emit_one) from [<802e41f0>] (nbcon_kthread_func+0x208/0x2ec kernel/printk/nbcon.c:1271) r6:82ac110c r5:8295a3c0 r4:831dbc00 [<802e3fe8>] (nbcon_kthread_func) from [<8027e388>] (kthread+0x118/0x138 kernel/kthread.c:467) r10:00000000 r9:8295a3c0 r8:802e3fe8 r7:eae19b48 r6:831dbc00 r5:847f4680 r4:83328840 [<8027e270>] (kthread) from [<80200114>] (ret_from_fork+0x14/0x20 arch/arm/kernel/entry-common.S:137) Exception stack(0xeb2f9fb0 to 0xeb2f9ff8) 9fa0: 00000000 00000000 00000000 00000000 9fc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 9fe0: 00000000 00000000 00000000 00000000 00000013 00000000 r9:00000000 r8:00000000 r7:00000000 r6:00000000 r5:8027e270 r4:83328840