INFO: task kworker/0:9:31335 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/0:9 state:D stack:0 pid:31335 tgid:31335 ppid:2 task_flags:0x4208060 flags:0x00000000 Workqueue: events bpf_prog_free_deferred Call trace: [<81b5f4fc>] (__schedule) from [<81b60994>] (__schedule_loop kernel/sched/core.c:7311 [inline]) [<81b5f4fc>] (__schedule) from [<81b60994>] (schedule+0x2c/0xec kernel/sched/core.c:7326) r10:dfda5da4 r9:dfda5dac r8:00000002 r7:60000113 r6:82cd7e0c r5:83e8ee40 r4:83e8ee40 [<81b60968>] (schedule) from [<81b60ad8>] (schedule_preempt_disabled+0x18/0x24 kernel/sched/core.c:7383) r5:83e8ee40 r4:82cd7e08 [<81b60ac0>] (schedule_preempt_disabled) from [<81b63c50>] (__mutex_lock_common kernel/locking/mutex.c:726 [inline]) [<81b60ac0>] (schedule_preempt_disabled) from [<81b63c50>] (__mutex_lock.constprop.0+0x50c/0xa48 kernel/locking/mutex.c:821) [<81b63744>] (__mutex_lock.constprop.0) from [<81b64260>] (__mutex_lock_slowpath+0x14/0x18 kernel/locking/mutex.c:1164) r10:82a0b444 r9:00000001 r8:00000000 r7:ffffffff r6:00000000 r5:dfda5e28 r4:83876540 [<81b6424c>] (__mutex_lock_slowpath) from [<81b642a0>] (mutex_lock+0x3c/0x40 kernel/locking/mutex.c:319) [<81b64264>] (mutex_lock) from [<8051e9c8>] (_vm_unmap_aliases+0x5c/0x238 mm/vmalloc.c:2951) [<8051e96c>] (_vm_unmap_aliases) from [<80522758>] (vm_reset_perms mm/vmalloc.c:3382 [inline]) [<8051e96c>] (_vm_unmap_aliases) from [<80522758>] (vfree+0x110/0x17c mm/vmalloc.c:3486) r10:8302b005 r9:00000001 r8:00000000 r7:ffffffff r6:00000000 r5:00000000 r4:83876540 [<80522648>] (vfree) from [<80599308>] (execmem_free+0x30/0x50 mm/execmem.c:506) r9:83e8ee40 r8:00800000 r7:00000000 r6:8302b000 r5:00001000 r4:7f2a6000 [<805992d8>] (execmem_free) from [<803dc978>] (bpf_jit_free_exec+0x10/0x14 kernel/bpf/core.c:1125) r5:00001000 r4:e4469000 [<803dc968>] (bpf_jit_free_exec) from [<803dce68>] (bpf_jit_binary_free kernel/bpf/core.c:1171 [inline]) [<803dc968>] (bpf_jit_free_exec) from [<803dce68>] (bpf_jit_free+0x64/0xe0 kernel/bpf/core.c:1295) [<803dce04>] (bpf_jit_free) from [<803ddf40>] (bpf_prog_free_deferred+0x148/0x160 kernel/bpf/core.c:3106) r5:85075398 r4:85075398 [<803dddf8>] (bpf_prog_free_deferred) from [<802761e8>] (process_one_work+0x1c8/0x580 kernel/workqueue.c:3322) r7:dddd0f00 r6:8302b000 r5:85075398 r4:865ebf80 [<80276020>] (process_one_work) from [<80276e94>] (process_scheduled_works kernel/workqueue.c:3405 [inline]) [<80276020>] (process_one_work) from [<80276e94>] (worker_thread+0x16c/0x318 kernel/workqueue.c:3486) r10:00000000 r9:865ebfb0 r8:83e8ee40 r7:82a03d80 r6:dddd0f20 r5:dddd0f00 r4:865ebf80 [<80276d28>] (worker_thread) from [<80281710>] (kthread+0x11c/0x154 kernel/kthread.c:436) r10:00000000 r9:ea945e88 r8:8510a780 r7:865ebf80 r6:80276d28 r5:83e8ee40 r4:8472a440 [<802815f4>] (kthread) from [<80200114>] (ret_from_fork+0x14/0x20 arch/arm/kernel/entry-common.S:137) Exception stack(0xdfda5fb0 to 0xdfda5ff8) 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 r5:802815f4 r4:8472a440 INFO: task kworker/0:9:31335 is blocked on a mutex likely owned by task kworker/0:15:31575. task:kworker/0:15 state:R running task stack:0 pid:31575 tgid:31575 ppid:2 task_flags:0x4208060 flags:0x00000000 Workqueue: events bpf_prog_free_deferred Call trace: [<81b5f4fc>] (__schedule) from [<81b60d84>] (preempt_schedule_irq+0x40/0xa8 kernel/sched/core.c:7556) r10:82a0b498 r9:84894980 r8:80200c04 r7:dfe01d7c r6:ffffffff r5:84894980 r4:00000000 [<81b60d44>] (preempt_schedule_irq) from [<80200c24>] (svc_preempt+0x8/0x18) Exception stack(0xdfe01d48 to 0xdfe01d90) 1d40: dafd4000 eacc9000 00000000 80238790 82cd71a0 82cd7de4 1d60: 7f24a000 eacc9000 00000000 00000001 82a0b498 dfe01dbc eacc9000 dfe01d98 1d80: 8022f6d0 802387a8 80000113 ffffffff r5:80000113 r4:802387a8 [<8022f670>] (flush_tlb_kernel_range) from [<8051e77c>] (__purge_vmap_area_lazy+0x28c/0x47c mm/vmalloc.c:2376) [<8051e4f0>] (__purge_vmap_area_lazy) from [<8051eb54>] (_vm_unmap_aliases+0x1e8/0x238 mm/vmalloc.c:2990) r10:00000000 r9:dfe01de0 r8:00000000 r7:ffffffff r6:00000008 r5:dfe01e28 r4:dfe01de0 [<8051e96c>] (_vm_unmap_aliases) from [<80522758>] (vm_reset_perms mm/vmalloc.c:3382 [inline]) [<8051e96c>] (_vm_unmap_aliases) from [<80522758>] (vfree+0x110/0x17c mm/vmalloc.c:3486) r10:8302b005 r9:00000001 r8:00000000 r7:ffffffff r6:00000000 r5:00000000 r4:85ebd640 [<80522648>] (vfree) from [<80599308>] (execmem_free+0x30/0x50 mm/execmem.c:506) r9:84894980 r8:00800000 r7:00000000 r6:8302b000 r5:00001000 r4:7f286000 [<805992d8>] (execmem_free) from [<803dc978>] (bpf_jit_free_exec+0x10/0x14 kernel/bpf/core.c:1125) r5:00001000 r4:df8f5000 [<803dc968>] (bpf_jit_free_exec) from [<803dce68>] (bpf_jit_binary_free kernel/bpf/core.c:1171 [inline]) [<803dc968>] (bpf_jit_free_exec) from [<803dce68>] (bpf_jit_free+0x64/0xe0 kernel/bpf/core.c:1295) [<803dce04>] (bpf_jit_free) from [<803ddf40>] (bpf_prog_free_deferred+0x148/0x160 kernel/bpf/core.c:3106) r5:851a7f98 r4:851a7f98 [<803dddf8>] (bpf_prog_free_deferred) from [<802761e8>] (process_one_work+0x1c8/0x580 kernel/workqueue.c:3322) r7:dddd0f00 r6:8302b000 r5:851a7f98 r4:872a6f00 [<80276020>] (process_one_work) from [<80276e94>] (process_scheduled_works kernel/workqueue.c:3405 [inline]) [<80276020>] (process_one_work) from [<80276e94>] (worker_thread+0x16c/0x318 kernel/workqueue.c:3486) r10:dddd0f00 r9:872a6f30 r8:84894980 r7:82a03d80 r6:dddd0f20 r5:dddd0f00 r4:872a6f00 [<80276d28>] (worker_thread) from [<80281710>] (kthread+0x11c/0x154 kernel/kthread.c:436) r10:00000000 r9:e445de88 r8:84d9b300 r7:872a6f00 r6:80276d28 r5:84894980 r4:8711b540 [<802815f4>] (kthread) from [<80200114>] (ret_from_fork+0x14/0x20 arch/arm/kernel/entry-common.S:137) Exception stack(0xdfe01fb0 to 0xdfe01ff8) 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 r5:802815f4 r4:8711b540 INFO: task kworker/0:10:31397 blocked for more than 431 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:31397 tgid:31397 ppid:2 task_flags:0x4208060 flags:0x00000000 Workqueue: events bpf_prog_free_deferred Call trace: [<81b5f4fc>] (__schedule) from [<81b60994>] (__schedule_loop kernel/sched/core.c:7311 [inline]) [<81b5f4fc>] (__schedule) from [<81b60994>] (schedule+0x2c/0xec kernel/sched/core.c:7326) r10:ea819da4 r9:ea819dac r8:00000002 r7:60000013 r6:82cd7e0c r5:856b6e40 r4:856b6e40 [<81b60968>] (schedule) from [<81b60ad8>] (schedule_preempt_disabled+0x18/0x24 kernel/sched/core.c:7383) r5:856b6e40 r4:82cd7e08 [<81b60ac0>] (schedule_preempt_disabled) from [<81b63c50>] (__mutex_lock_common kernel/locking/mutex.c:726 [inline]) [<81b60ac0>] (schedule_preempt_disabled) from [<81b63c50>] (__mutex_lock.constprop.0+0x50c/0xa48 kernel/locking/mutex.c:821) [<81b63744>] (__mutex_lock.constprop.0) from [<81b64260>] (__mutex_lock_slowpath+0x14/0x18 kernel/locking/mutex.c:1164) r10:82a0b444 r9:00000001 r8:00000000 r7:ffffffff r6:00000000 r5:ea819e28 r4:863d4700 [<81b6424c>] (__mutex_lock_slowpath) from [<81b642a0>] (mutex_lock+0x3c/0x40 kernel/locking/mutex.c:319) [<81b64264>] (mutex_lock) from [<8051e9c8>] (_vm_unmap_aliases+0x5c/0x238 mm/vmalloc.c:2951) [<8051e96c>] (_vm_unmap_aliases) from [<80522758>] (vm_reset_perms mm/vmalloc.c:3382 [inline]) [<8051e96c>] (_vm_unmap_aliases) from [<80522758>] (vfree+0x110/0x17c mm/vmalloc.c:3486) r10:8302b005 r9:00000001 r8:00000000 r7:ffffffff r6:00000000 r5:00000000 r4:863d4700 [<80522648>] (vfree) from [<80599308>] (execmem_free+0x30/0x50 mm/execmem.c:506) r9:856b6e40 r8:00800000 r7:00000000 r6:8302b000 r5:00001000 r4:7f2a4000 [<805992d8>] (execmem_free) from [<803dc978>] (bpf_jit_free_exec+0x10/0x14 kernel/bpf/core.c:1125) r5:00001000 r4:e4467000 [<803dc968>] (bpf_jit_free_exec) from [<803dce68>] (bpf_jit_binary_free kernel/bpf/core.c:1171 [inline]) [<803dc968>] (bpf_jit_free_exec) from [<803dce68>] (bpf_jit_free+0x64/0xe0 kernel/bpf/core.c:1295) [<803dce04>] (bpf_jit_free) from [<803ddf40>] (bpf_prog_free_deferred+0x148/0x160 kernel/bpf/core.c:3106) r5:851b4798 r4:851b4798 [<803dddf8>] (bpf_prog_free_deferred) from [<802761e8>] (process_one_work+0x1c8/0x580 kernel/workqueue.c:3322) r7:dddd0f00 r6:8302b000 r5:851b4798 r4:85229580 [<80276020>] (process_one_work) from [<80276e94>] (process_scheduled_works kernel/workqueue.c:3405 [inline]) [<80276020>] (process_one_work) from [<80276e94>] (worker_thread+0x16c/0x318 kernel/workqueue.c:3486) r10:00000000 r9:852295b0 r8:856b6e40 r7:82a03d80 r6:dddd0f20 r5:dddd0f00 r4:85229580 [<80276d28>] (worker_thread) from [<80281710>] (kthread+0x11c/0x154 kernel/kthread.c:436) r10:00000000 r9:ea945e88 r8:86082780 r7:85229580 r6:80276d28 r5:856b6e40 r4:85e0a740 [<802815f4>] (kthread) from [<80200114>] (ret_from_fork+0x14/0x20 arch/arm/kernel/entry-common.S:137) Exception stack(0xea819fb0 to 0xea819ff8) 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 r5:802815f4 r4:85e0a740 INFO: task kworker/0:10:31397 is blocked on a mutex likely owned by task kworker/0:15:31575. task:kworker/0:15 state:R running task stack:0 pid:31575 tgid:31575 ppid:2 task_flags:0x4208060 flags:0x00000000 Workqueue: events bpf_prog_free_deferred Call trace: [<81b5f4fc>] (__schedule) from [<81b60d84>] (preempt_schedule_irq+0x40/0xa8 kernel/sched/core.c:7556) r10:82a0b498 r9:84894980 r8:80200c04 r7:dfe01d7c r6:ffffffff r5:84894980 r4:00000000 [<81b60d44>] (preempt_schedule_irq) from [<80200c24>] (svc_preempt+0x8/0x18) Exception stack(0xdfe01d48 to 0xdfe01d90) 1d40: db621000 eacc9000 00000000 80238790 82cd71a0 82cd7de4 1d60: 7f24a000 eacc9000 00000000 00000001 82a0b498 dfe01dbc eacc9000 dfe01d98 1d80: 8022f6d0 802387a8 80000113 ffffffff r5:80000113 r4:802387a8 [<8022f670>] (flush_tlb_kernel_range) from [<8051e77c>] (__purge_vmap_area_lazy+0x28c/0x47c mm/vmalloc.c:2376) [<8051e4f0>] (__purge_vmap_area_lazy) from [<8051eb54>] (_vm_unmap_aliases+0x1e8/0x238 mm/vmalloc.c:2990) r10:00000000 r9:dfe01de0 r8:00000000 r7:ffffffff r6:00000008 r5:dfe01e28 r4:dfe01de0 [<8051e96c>] (_vm_unmap_aliases) from [<80522758>] (vm_reset_perms mm/vmalloc.c:3382 [inline]) [<8051e96c>] (_vm_unmap_aliases) from [<80522758>] (vfree+0x110/0x17c mm/vmalloc.c:3486) r10:8302b005 r9:00000001 r8:00000000 r7:ffffffff r6:00000000 r5:00000000 r4:85ebd640 [<80522648>] (vfree) from [<80599308>] (execmem_free+0x30/0x50 mm/execmem.c:506) r9:84894980 r8:00800000 r7:00000000 r6:8302b000 r5:00001000 r4:7f286000 [<805992d8>] (execmem_free) from [<803dc978>] (bpf_jit_free_exec+0x10/0x14 kernel/bpf/core.c:1125) r5:00001000 r4:df8f5000 [<803dc968>] (bpf_jit_free_exec) from [<803dce68>] (bpf_jit_binary_free kernel/bpf/core.c:1171 [inline]) [<803dc968>] (bpf_jit_free_exec) from [<803dce68>] (bpf_jit_free+0x64/0xe0 kernel/bpf/core.c:1295) [<803dce04>] (bpf_jit_free) from [<803ddf40>] (bpf_prog_free_deferred+0x148/0x160 kernel/bpf/core.c:3106) r5:851a7f98 r4:851a7f98 [<803dddf8>] (bpf_prog_free_deferred) from [<802761e8>] (process_one_work+0x1c8/0x580 kernel/workqueue.c:3322) r7:dddd0f00 r6:8302b000 r5:851a7f98 r4:872a6f00 [<80276020>] (process_one_work) from [<80276e94>] (process_scheduled_works kernel/workqueue.c:3405 [inline]) [<80276020>] (process_one_work) from [<80276e94>] (worker_thread+0x16c/0x318 kernel/workqueue.c:3486) r10:dddd0f00 r9:872a6f30 r8:84894980 r7:82a03d80 r6:dddd0f20 r5:dddd0f00 r4:872a6f00 [<80276d28>] (worker_thread) from [<80281710>] (kthread+0x11c/0x154 kernel/kthread.c:436) r10:00000000 r9:e445de88 r8:84d9b300 r7:872a6f00 r6:80276d28 r5:84894980 r4:8711b540 [<802815f4>] (kthread) from [<80200114>] (ret_from_fork+0x14/0x20 arch/arm/kernel/entry-common.S:137) Exception stack(0xdfe01fb0 to 0xdfe01ff8) 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 r5:802815f4 r4:8711b540 INFO: task kworker/0:12:31432 blocked for more than 431 seconds. Tainted: G L syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/0:12 state:D stack:0 pid:31432 tgid:31432 ppid:2 task_flags:0x4208060 flags:0x00000000 Workqueue: events bpf_prog_free_deferred Call trace: [<81b5f4fc>] (__schedule) from [<81b60994>] (__schedule_loop kernel/sched/core.c:7311 [inline]) [<81b5f4fc>] (__schedule) from [<81b60994>] (schedule+0x2c/0xec kernel/sched/core.c:7326) r10:dfa91da4 r9:dfa91dac r8:00000002 r7:600f0113 r6:82cd7e0c r5:856f4980 r4:856f4980 [<81b60968>] (schedule) from [<81b60ad8>] (schedule_preempt_disabled+0x18/0x24 kernel/sched/core.c:7383) r5:856f4980 r4:82cd7e08 [<81b60ac0>] (schedule_preempt_disabled) from [<81b63c50>] (__mutex_lock_common kernel/locking/mutex.c:726 [inline]) [<81b60ac0>] (schedule_preempt_disabled) from [<81b63c50>] (__mutex_lock.constprop.0+0x50c/0xa48 kernel/locking/mutex.c:821) [<81b63744>] (__mutex_lock.constprop.0) from [<81b64260>] (__mutex_lock_slowpath+0x14/0x18 kernel/locking/mutex.c:1164) r10:82a0b444 r9:00000001 r8:00000000 r7:ffffffff r6:00000000 r5:dfa91e28 r4:860e32c0 [<81b6424c>] (__mutex_lock_slowpath) from [<81b642a0>] (mutex_lock+0x3c/0x40 kernel/locking/mutex.c:319) [<81b64264>] (mutex_lock) from [<8051e9c8>] (_vm_unmap_aliases+0x5c/0x238 mm/vmalloc.c:2951) [<8051e96c>] (_vm_unmap_aliases) from [<80522758>] (vm_reset_perms mm/vmalloc.c:3382 [inline]) [<8051e96c>] (_vm_unmap_aliases) from [<80522758>] (vfree+0x110/0x17c mm/vmalloc.c:3486) r10:8302b005 r9:00000001 r8:00000000 r7:ffffffff r6:00000000 r5:00000000 r4:860e32c0 [<80522648>] (vfree) from [<80599308>] (execmem_free+0x30/0x50 mm/execmem.c:506) r9:856f4980 r8:00800000 r7:00000000 r6:8302b000 r5:00001000 r4:7f2ac000 [<805992d8>] (execmem_free) from [<803dc978>] (bpf_jit_free_exec+0x10/0x14 kernel/bpf/core.c:1125) r5:00001000 r4:e4477000 [<803dc968>] (bpf_jit_free_exec) from [<803dce68>] (bpf_jit_binary_free kernel/bpf/core.c:1171 [inline]) [<803dc968>] (bpf_jit_free_exec) from [<803dce68>] (bpf_jit_free+0x64/0xe0 kernel/bpf/core.c:1295) [<803dce04>] (bpf_jit_free) from [<803ddf40>] (bpf_prog_free_deferred+0x148/0x160 kernel/bpf/core.c:3106) r5:852c8398 r4:852c8398 [<803dddf8>] (bpf_prog_free_deferred) from [<802761e8>] (process_one_work+0x1c8/0x580 kernel/workqueue.c:3322) r7:dddd0f00 r6:8302b000 r5:852c8398 r4:85f30700 [<80276020>] (process_one_work) from [<80276e94>] (process_scheduled_works kernel/workqueue.c:3405 [inline]) [<80276020>] (process_one_work) from [<80276e94>] (worker_thread+0x16c/0x318 kernel/workqueue.c:3486) r10:dddd0f00 r9:85f30730 r8:856f4980 r7:82a03d80 r6:dddd0f20 r5:dddd0f00 r4:85f30700 [<80276d28>] (worker_thread) from [<80281710>] (kthread+0x11c/0x154 kernel/kthread.c:436) r10:00000000 r9:e84d1e88 r8:860af100 r7:85f30700 r6:80276d28 r5:856f4980 r4:8640e900 [<802815f4>] (kthread) from [<80200114>] (ret_from_fork+0x14/0x20 arch/arm/kernel/entry-common.S:137) Exception stack(0xdfa91fb0 to 0xdfa91ff8) 1fa0: 00000000 00000000 00000000 00000000 1fc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 1fe0: 00000000 00000000 00000000 00000000 00000013 00000000 r9:00000000 r8:00000000 r7:00000000 r6:00000000 r5:802815f4 r4:8640e900 INFO: task kworker/0:12:31432 is blocked on a mutex likely owned by task kworker/0:15:31575. task:kworker/0:15 state:R running task stack:0 pid:31575 tgid:31575 ppid:2 task_flags:0x4208060 flags:0x00000000 Workqueue: events bpf_prog_free_deferred Call trace: [<81b5f4fc>] (__schedule) from [<81b60d84>] (preempt_schedule_irq+0x40/0xa8 kernel/sched/core.c:7556) r10:82a0b498 r9:84894980 r8:80200c04 r7:dfe01d7c r6:ffffffff r5:84894980 r4:00000000 [<81b60d44>] (preempt_schedule_irq) from [<80200c24>] (svc_preempt+0x8/0x18) Exception stack(0xdfe01d48 to 0xdfe01d90) 1d40: dc1a5000 eacc9000 00000000 80238790 82cd71a0 82cd7de4 1d60: 7f24a000 eacc9000 00000000 00000001 82a0b498 dfe01dbc eacc9000 dfe01d98 1d80: 8022f6d0 802387a8 80000113 ffffffff r5:80000113 r4:802387a8 [<8022f670>] (flush_tlb_kernel_range) from [<8051e77c>] (__purge_vmap_area_lazy+0x28c/0x47c mm/vmalloc.c:2376) [<8051e4f0>] (__purge_vmap_area_lazy) from [<8051eb54>] (_vm_unmap_aliases+0x1e8/0x238 mm/vmalloc.c:2990) r10:00000000 r9:dfe01de0 r8:00000000 r7:ffffffff r6:00000008 r5:dfe01e28 r4:dfe01de0 [<8051e96c>] (_vm_unmap_aliases) from [<80522758>] (vm_reset_perms mm/vmalloc.c:3382 [inline]) [<8051e96c>] (_vm_unmap_aliases) from [<80522758>] (vfree+0x110/0x17c mm/vmalloc.c:3486) r10:8302b005 r9:00000001 r8:00000000 r7:ffffffff r6:00000000 r5:00000000 r4:85ebd640 [<80522648>] (vfree) from [<80599308>] (execmem_free+0x30/0x50 mm/execmem.c:506) r9:84894980 r8:00800000 r7:00000000 r6:8302b000 r5:00001000 r4:7f286000 [<805992d8>] (execmem_free) from [<803dc978>] (bpf_jit_free_exec+0x10/0x14 kernel/bpf/core.c:1125) r5:00001000 r4:df8f5000 [<803dc968>] (bpf_jit_free_exec) from [<803dce68>] (bpf_jit_binary_free kernel/bpf/core.c:1171 [inline]) [<803dc968>] (bpf_jit_free_exec) from [<803dce68>] (bpf_jit_free+0x64/0xe0 kernel/bpf/core.c:1295) [<803dce04>] (bpf_jit_free) from [<803ddf40>] (bpf_prog_free_deferred+0x148/0x160 kernel/bpf/core.c:3106) r5:851a7f98 r4:851a7f98 [<803dddf8>] (bpf_prog_free_deferred) from [<802761e8>] (process_one_work+0x1c8/0x580 kernel/workqueue.c:3322) r7:dddd0f00 r6:8302b000 r5:851a7f98 r4:872a6f00 [<80276020>] (process_one_work) from [<80276e94>] (process_scheduled_works kernel/workqueue.c:3405 [inline]) [<80276020>] (process_one_work) from [<80276e94>] (worker_thread+0x16c/0x318 kernel/workqueue.c:3486) r10:dddd0f00 r9:872a6f30 r8:84894980 r7:82a03d80 r6:dddd0f20 r5:dddd0f00 r4:872a6f00 [<80276d28>] (worker_thread) from [<80281710>] (kthread+0x11c/0x154 kernel/kthread.c:436) r10:00000000 r9:e445de88 r8:84d9b300 r7:872a6f00 r6:80276d28 r5:84894980 r4:8711b540 [<802815f4>] (kthread) from [<80200114>] (ret_from_fork+0x14/0x20 arch/arm/kernel/entry-common.S:137) Exception stack(0xdfe01fb0 to 0xdfe01ff8) 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 r5:802815f4 r4:8711b540 INFO: task kworker/0:14:31438 blocked for more than 432 seconds. Tainted: G L syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/0:14 state:D stack:0 pid:31438 tgid:31438 ppid:2 task_flags:0x4208060 flags:0x00000000 Workqueue: events bpf_prog_free_deferred Call trace: [<81b5f4fc>] (__schedule) from [<81b60994>] (__schedule_loop kernel/sched/core.c:7311 [inline]) [<81b5f4fc>] (__schedule) from [<81b60994>] (schedule+0x2c/0xec kernel/sched/core.c:7326) r10:dfb25da4 r9:dfb25dac r8:00000002 r7:60000013 r6:82cd7e0c r5:84890c40 r4:84890c40 [<81b60968>] (schedule) from [<81b60ad8>] (schedule_preempt_disabled+0x18/0x24 kernel/sched/core.c:7383) r5:84890c40 r4:82cd7e08 [<81b60ac0>] (schedule_preempt_disabled) from [<81b63c50>] (__mutex_lock_common kernel/locking/mutex.c:726 [inline]) [<81b60ac0>] (schedule_preempt_disabled) from [<81b63c50>] (__mutex_lock.constprop.0+0x50c/0xa48 kernel/locking/mutex.c:821) [<81b63744>] (__mutex_lock.constprop.0) from [<81b64260>] (__mutex_lock_slowpath+0x14/0x18 kernel/locking/mutex.c:1164) r10:82a0b444 r9:00000001 r8:00000000 r7:ffffffff r6:00000000 r5:dfb25e28 r4:85160000 [<81b6424c>] (__mutex_lock_slowpath) from [<81b642a0>] (mutex_lock+0x3c/0x40 kernel/locking/mutex.c:319) [<81b64264>] (mutex_lock) from [<8051e9c8>] (_vm_unmap_aliases+0x5c/0x238 mm/vmalloc.c:2951) [<8051e96c>] (_vm_unmap_aliases) from [<80522758>] (vm_reset_perms mm/vmalloc.c:3382 [inline]) [<8051e96c>] (_vm_unmap_aliases) from [<80522758>] (vfree+0x110/0x17c mm/vmalloc.c:3486) r10:8302b005 r9:00000001 r8:00000000 r7:ffffffff r6:00000000 r5:00000000 r4:85160000 [<80522648>] (vfree) from [<80599308>] (execmem_free+0x30/0x50 mm/execmem.c:506) r9:84890c40 r8:00800000 r7:00000000 r6:8302b000 r5:00001000 r4:7f2ae000 [<805992d8>] (execmem_free) from [<803dc978>] (bpf_jit_free_exec+0x10/0x14 kernel/bpf/core.c:1125) r5:00001000 r4:e4479000 [<803dc968>] (bpf_jit_free_exec) from [<803dce68>] (bpf_jit_binary_free kernel/bpf/core.c:1171 [inline]) [<803dc968>] (bpf_jit_free_exec) from [<803dce68>] (bpf_jit_free+0x64/0xe0 kernel/bpf/core.c:1295) [<803dce04>] (bpf_jit_free) from [<803ddf40>] (bpf_prog_free_deferred+0x148/0x160 kernel/bpf/core.c:3106) r5:861d8398 r4:861d8398 [<803dddf8>] (bpf_prog_free_deferred) from [<802761e8>] (process_one_work+0x1c8/0x580 kernel/workqueue.c:3322) r7:dddd0f00 r6:8302b000 r5:861d8398 r4:854aaf80 [<80276020>] (process_one_work) from [<80276e94>] (process_scheduled_works kernel/workqueue.c:3405 [inline]) [<80276020>] (process_one_work) from [<80276e94>] (worker_thread+0x16c/0x318 kernel/workqueue.c:3486) r10:00000000 r9:854aafb0 r8:84890c40 r7:82a03d80 r6:dddd0f20 r5:dddd0f00 r4:854aaf80 [<80276d28>] (worker_thread) from [<80281710>] (kthread+0x11c/0x154 kernel/kthread.c:436) r10:00000000 r9:dfa91e88 r8:8878b700 r7:854aaf80 r6:80276d28 r5:84890c40 r4:86793180 [<802815f4>] (kthread) from [<80200114>] (ret_from_fork+0x14/0x20 arch/arm/kernel/entry-common.S:137) Exception stack(0xdfb25fb0 to 0xdfb25ff8) 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 r5:802815f4 r4:86793180 INFO: task kworker/0:14:31438 is blocked on a mutex likely owned by task kworker/0:15:31575. task:kworker/0:15 state:R running task stack:0 pid:31575 tgid:31575 ppid:2 task_flags:0x4208060 flags:0x00000000 Workqueue: events bpf_prog_free_deferred Call trace: [<81b5f4fc>] (__schedule) from [<81b60d84>] (preempt_schedule_irq+0x40/0xa8 kernel/sched/core.c:7556) r10:82a0b498 r9:84894980 r8:80200c04 r7:dfe01d7c r6:ffffffff r5:84894980 r4:00000000 [<81b60d44>] (preempt_schedule_irq) from [<80200c24>] (svc_preempt+0x8/0x18) Exception stack(0xdfe01d48 to 0xdfe01d90) 1d40: dc704000 eacc9000 00000000 80238790 82cd71a0 82cd7de4 1d60: 7f24a000 eacc9000 00000000 00000001 82a0b498 dfe01dbc eacc9000 dfe01d98 1d80: 8022f6d0 802387a8 80000113 ffffffff r5:80000113 r4:802387a8 [<8022f670>] (flush_tlb_kernel_range) from [<8051e77c>] (__purge_vmap_area_lazy+0x28c/0x47c mm/vmalloc.c:2376) [<8051e4f0>] (__purge_vmap_area_lazy) from [<8051eb54>] (_vm_unmap_aliases+0x1e8/0x238 mm/vmalloc.c:2990) r10:00000000 r9:dfe01de0 r8:00000000 r7:ffffffff r6:00000008 r5:dfe01e28 r4:dfe01de0 [<8051e96c>] (_vm_unmap_aliases) from [<80522758>] (vm_reset_perms mm/vmalloc.c:3382 [inline]) [<8051e96c>] (_vm_unmap_aliases) from [<80522758>] (vfree+0x110/0x17c mm/vmalloc.c:3486) r10:8302b005 r9:00000001 r8:00000000 r7:ffffffff r6:00000000 r5:00000000 r4:85ebd640 [<80522648>] (vfree) from [<80599308>] (execmem_free+0x30/0x50 mm/execmem.c:506) r9:84894980 r8:00800000 r7:00000000 r6:8302b000 r5:00001000 r4:7f286000 [<805992d8>] (execmem_free) from [<803dc978>] (bpf_jit_free_exec+0x10/0x14 kernel/bpf/core.c:1125) r5:00001000 r4:df8f5000 [<803dc968>] (bpf_jit_free_exec) from [<803dce68>] (bpf_jit_binary_free kernel/bpf/core.c:1171 [inline]) [<803dc968>] (bpf_jit_free_exec) from [<803dce68>] (bpf_jit_free+0x64/0xe0 kernel/bpf/core.c:1295) [<803dce04>] (bpf_jit_free) from [<803ddf40>] (bpf_prog_free_deferred+0x148/0x160 kernel/bpf/core.c:3106) r5:851a7f98 r4:851a7f98 [<803dddf8>] (bpf_prog_free_deferred) from [<802761e8>] (process_one_work+0x1c8/0x580 kernel/workqueue.c:3322) r7:dddd0f00 r6:8302b000 r5:851a7f98 r4:872a6f00 [<80276020>] (process_one_work) from [<80276e94>] (process_scheduled_works kernel/workqueue.c:3405 [inline]) [<80276020>] (process_one_work) from [<80276e94>] (worker_thread+0x16c/0x318 kernel/workqueue.c:3486) r10:dddd0f00 r9:872a6f30 r8:84894980 r7:82a03d80 r6:dddd0f20 r5:dddd0f00 r4:872a6f00 [<80276d28>] (worker_thread) from [<80281710>] (kthread+0x11c/0x154 kernel/kthread.c:436) r10:00000000 r9:e445de88 r8:84d9b300 r7:872a6f00 r6:80276d28 r5:84894980 r4:8711b540 [<802815f4>] (kthread) from [<80200114>] (ret_from_fork+0x14/0x20 arch/arm/kernel/entry-common.S:137) Exception stack(0xdfe01fb0 to 0xdfe01ff8) 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 r5:802815f4 r4:8711b540 NMI backtrace for cpu 0 CPU: 0 UID: 0 PID: 29 Comm: khungtaskd Tainted: G L syzkaller #0 PREEMPT Tainted: [L]=SOFTLOCKUP Hardware name: ARM-Versatile Express Call trace: [<80201998>] (dump_backtrace) from [<80201a8c>] (show_stack+0x18/0x1c arch/arm/kernel/traps.c:257) r7:600d0193 r6:600d0193 r5:8233309c r4:00000000 [<80201a74>] (show_stack) from [<8021e5fc>] (__dump_stack lib/dump_stack.c:94 [inline]) [<80201a74>] (show_stack) from [<8021e5fc>] (dump_stack_lvl+0x5c/0x70 lib/dump_stack.c:120) [<8021e5a0>] (dump_stack_lvl) from [<8021e628>] (dump_stack+0x18/0x1c lib/dump_stack.c:129) r7:00000000 r6:000d0113 r5:00000000 r4:00000001 [<8021e610>] (dump_stack) from [<81b48b9c>] (nmi_cpu_backtrace+0x150/0x170 lib/nmi_backtrace.c:122) [<81b48a4c>] (nmi_cpu_backtrace) from [<81b48cf0>] (nmi_trigger_cpumask_backtrace+0x134/0x208 lib/nmi_backtrace.c:65) r7:82a0b150 r6:83320c40 r5:82a1c7b8 r4:ffffffff [<81b48bbc>] (nmi_trigger_cpumask_backtrace) from [<8022f0f4>] (arch_trigger_cpumask_backtrace+0x18/0x1c arch/arm/kernel/smp.c:851) r9:82a0b2f0 r8:00000004 r7:82a1ce80 r6:82ccae2c r5:00007ed9 r4:00000048 [<8022f0dc>] (arch_trigger_cpumask_backtrace) from [<81b5082c>] (trigger_all_cpu_backtrace include/linux/nmi.h:162 [inline]) [<8022f0dc>] (arch_trigger_cpumask_backtrace) from [<81b5082c>] (__sys_info lib/sys_info.c:157 [inline]) [<8022f0dc>] (arch_trigger_cpumask_backtrace) from [<81b5082c>] (sys_info+0x68/0xa8 lib/sys_info.c:165) [<81b507c4>] (sys_info) from [<8038f988>] (check_hung_uninterruptible_tasks kernel/hung_task.c:353 [inline]) [<81b507c4>] (sys_info) from [<8038f988>] (watchdog+0x3a0/0x848 kernel/hung_task.c:561) r5:00007ed9 r4:0000000a [<8038f5e8>] (watchdog) from [<80281710>] (kthread+0x11c/0x154 kernel/kthread.c:436) r10:00000000 r9:df819e60 r8:831d4600 r7:00000000 r6:8038f5e8 r5:83320c40 r4:833dd400 [<802815f4>] (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 r5:802815f4 r4:833dd400