INFO: task kworker/0:3:2627 blocked for more than 430 seconds. Not tainted syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/0:3 state:D stack:0 pid:2627 tgid:2627 ppid:2 task_flags:0x4208060 flags:0x00000000 Workqueue: events bpf_prog_free_deferred Call trace: [<81ab1a1c>] (__schedule) from [<81ab2cc8>] (__schedule_loop kernel/sched/core.c:6945 [inline]) [<81ab1a1c>] (__schedule) from [<81ab2cc8>] (schedule+0x2c/0x130 kernel/sched/core.c:6960) r10:ed4ddd84 r9:829174a8 r8:60000013 r7:829174a8 r6:ed4ddd8c r5:845d0c00 r4:845d0c00 [<81ab2c9c>] (schedule) from [<81ab2e50>] (schedule_preempt_disabled+0x18/0x24 kernel/sched/core.c:7017) r5:845d0c00 r4:829174a4 [<81ab2e38>] (schedule_preempt_disabled) from [<81ab64d4>] (__mutex_lock_common kernel/locking/mutex.c:692 [inline]) [<81ab2e38>] (schedule_preempt_disabled) from [<81ab64d4>] (__mutex_lock.constprop.0+0x658/0xf8c kernel/locking/mutex.c:776) [<81ab5e7c>] (__mutex_lock.constprop.0) from [<81ab6edc>] (__mutex_lock_slowpath+0x14/0x18 kernel/locking/mutex.c:1065) r10:8280c9a4 r9:00000001 r8:00000000 r7:ffffffff r6:00000000 r5:ed4dde08 r4:00000000 [<81ab6ec8>] (__mutex_lock_slowpath) from [<81ab6f1c>] (mutex_lock+0x3c/0x40 kernel/locking/mutex.c:290) [<81ab6ee0>] (mutex_lock) from [<804f4260>] (_vm_unmap_aliases+0x68/0x240 mm/vmalloc.c:2944) [<804f41f8>] (_vm_unmap_aliases) from [<804f8048>] (vm_reset_perms mm/vmalloc.c:3375 [inline]) [<804f41f8>] (_vm_unmap_aliases) from [<804f8048>] (vfree+0x16c/0x210 mm/vmalloc.c:3454) r10:83016170 r9:00000001 r8:00000000 r7:ffffffff r6:00000000 r5:87cb7e00 r4:00000000 [<804f7edc>] (vfree) from [<80563e54>] (execmem_free+0x30/0x50 mm/execmem.c:503) r9:83018405 r8:845d0c00 r7:00000000 r6:83018400 r5:00001000 r4:7f290000 [<80563e24>] (execmem_free) from [<803cb1cc>] (bpf_jit_free_exec+0x10/0x14 kernel/bpf/core.c:1052) r5:00001000 r4:ea8bf000 [<803cb1bc>] (bpf_jit_free_exec) from [<803cb5ac>] (bpf_jit_binary_free kernel/bpf/core.c:1098 [inline]) [<803cb1bc>] (bpf_jit_free_exec) from [<803cb5ac>] (bpf_jit_free+0x68/0xe4 kernel/bpf/core.c:1221) [<803cb544>] (bpf_jit_free) from [<803cc6d4>] (bpf_prog_free_deferred+0x140/0x158 kernel/bpf/core.c:2919) r5:864c678c r4:85cc9100 [<803cc594>] (bpf_prog_free_deferred) from [<80275db8>] (process_one_work+0x1b4/0x4f4 kernel/workqueue.c:3257) r7:dddcfb40 r6:83018400 r5:864c678c r4:85cc9100 [<80275c04>] (process_one_work) from [<802764f8>] (process_scheduled_works kernel/workqueue.c:3340 [inline]) [<80275c04>] (process_one_work) from [<802764f8>] (worker_thread+0x1fc/0x3d8 kernel/workqueue.c:3421) r10:61c88647 r9:845d0c00 r8:85cc912c r7:82804d80 r6:dddcfb40 r5:dddcfb60 r4:85cc9100 [<802762fc>] (worker_thread) from [<8027f6fc>] (kthread+0x12c/0x280 kernel/kthread.c:463) r10:00000000 r9:85cc9100 r8:802762fc r7:dfc51e60 r6:85cc9180 r5:845d0c00 r4:00000001 [<8027f5d0>] (kthread) from [<80200114>] (ret_from_fork+0x14/0x20 arch/arm/kernel/entry-common.S:137) Exception stack(0xed4ddfb0 to 0xed4ddff8) dfa0: 00000000 00000000 00000000 00000000 dfc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 dfe0: 00000000 00000000 00000000 00000000 00000013 00000000 r10:00000000 r9:00000000 r8:00000000 r7:00000000 r6:00000000 r5:8027f5d0 r4:86603bc0 INFO: task kworker/0:3:2627 is blocked on a mutex likely owned by task kworker/1:20:6031. task:kworker/1:20 state:R running task stack:0 pid:6031 tgid:6031 ppid:2 task_flags:0x4208060 flags:0x00000000 Workqueue: events bpf_prog_free_deferred Call trace: [<81ab1a1c>] (__schedule) from [<81ab30fc>] (preempt_schedule_irq+0x40/0xa8 kernel/sched/core.c:7190) r10:8280c9f8 r9:84c4d400 r8:80200c04 r7:dfb75d54 r6:ffffffff r5:84c4d400 r4:00000000 [<81ab30bc>] (preempt_schedule_irq) from [<80200c24>] (svc_preempt+0x8/0x18) Exception stack(0xdfb75d20 to 0xdfb75d68) 5d20: e63d9000 ff6e8000 00000001 80239018 7f230000 00000001 82ace204 82acd5e0 5d40: 7f230000 ff6e8000 8280c9f8 dfb75d9c dfb75da0 dfb75d70 8022fe10 80239030 5d60: 80000113 ffffffff r5:80000113 r4:80239030 [<8022fdac>] (flush_tlb_kernel_range) from [<804f4024>] (__purge_vmap_area_lazy+0x284/0x458 mm/vmalloc.c:2369) r4:82ace224 [<804f3da0>] (__purge_vmap_area_lazy) from [<804f43dc>] (_vm_unmap_aliases+0x1e4/0x240 mm/vmalloc.c:2983) r10:00000000 r9:00000000 r8:00000000 r7:ffffffff r6:dfb75dc0 r5:dfb75e08 r4:dfb75dc0 [<804f41f8>] (_vm_unmap_aliases) from [<804f8048>] (vm_reset_perms mm/vmalloc.c:3375 [inline]) [<804f41f8>] (_vm_unmap_aliases) from [<804f8048>] (vfree+0x16c/0x210 mm/vmalloc.c:3454) r10:83016170 r9:00000001 r8:00000000 r7:ffffffff r6:00000000 r5:87cb7b00 r4:00000000 [<804f7edc>] (vfree) from [<80563e54>] (execmem_free+0x30/0x50 mm/execmem.c:503) r9:83018605 r8:84c4d400 r7:00000000 r6:83018600 r5:00001000 r4:7f288000 [<80563e24>] (execmem_free) from [<803cb1cc>] (bpf_jit_free_exec+0x10/0x14 kernel/bpf/core.c:1052) r5:00001000 r4:ea653000 [<803cb1bc>] (bpf_jit_free_exec) from [<803cb5ac>] (bpf_jit_binary_free kernel/bpf/core.c:1098 [inline]) [<803cb1bc>] (bpf_jit_free_exec) from [<803cb5ac>] (bpf_jit_free+0x68/0xe4 kernel/bpf/core.c:1221) [<803cb544>] (bpf_jit_free) from [<803cc6d4>] (bpf_prog_free_deferred+0x140/0x158 kernel/bpf/core.c:2919) r5:87ec138c r4:87d4a100 [<803cc594>] (bpf_prog_free_deferred) from [<80275db8>] (process_one_work+0x1b4/0x4f4 kernel/workqueue.c:3257) r7:ddde3b40 r6:83018600 r5:87ec138c r4:87d4a100 [<80275c04>] (process_one_work) from [<802764f8>] (process_scheduled_works kernel/workqueue.c:3340 [inline]) [<80275c04>] (process_one_work) from [<802764f8>] (worker_thread+0x1fc/0x3d8 kernel/workqueue.c:3421) r10:61c88647 r9:84c4d400 r8:87d4a12c r7:82804d80 r6:ddde3b40 r5:ddde3b60 r4:87d4a100 [<802762fc>] (worker_thread) from [<8027f6fc>] (kthread+0x12c/0x280 kernel/kthread.c:463) r10:00000000 r9:87d4a100 r8:802762fc r7:ea5e9e60 r6:87d4a000 r5:84c4d400 r4:00000001 [<8027f5d0>] (kthread) from [<80200114>] (ret_from_fork+0x14/0x20 arch/arm/kernel/entry-common.S:137) Exception stack(0xdfb75fb0 to 0xdfb75ff8) 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 r5:8027f5d0 r4:869890c0 INFO: task kworker/0:11:5955 blocked for more than 430 seconds. Not tainted syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/0:11 state:D stack:0 pid:5955 tgid:5955 ppid:2 task_flags:0x4208060 flags:0x00000000 Workqueue: events bpf_prog_free_deferred Call trace: [<81ab1a1c>] (__schedule) from [<81ab2cc8>] (__schedule_loop kernel/sched/core.c:6945 [inline]) [<81ab1a1c>] (__schedule) from [<81ab2cc8>] (schedule+0x2c/0x130 kernel/sched/core.c:6960) r10:e0391d84 r9:829174a8 r8:60000113 r7:829174a8 r6:e0391d8c r5:86832400 r4:86832400 [<81ab2c9c>] (schedule) from [<81ab2e50>] (schedule_preempt_disabled+0x18/0x24 kernel/sched/core.c:7017) r5:86832400 r4:829174a4 [<81ab2e38>] (schedule_preempt_disabled) from [<81ab64d4>] (__mutex_lock_common kernel/locking/mutex.c:692 [inline]) [<81ab2e38>] (schedule_preempt_disabled) from [<81ab64d4>] (__mutex_lock.constprop.0+0x658/0xf8c kernel/locking/mutex.c:776) [<81ab5e7c>] (__mutex_lock.constprop.0) from [<81ab6edc>] (__mutex_lock_slowpath+0x14/0x18 kernel/locking/mutex.c:1065) r10:8280c9a4 r9:00000001 r8:00000000 r7:ffffffff r6:00000000 r5:e0391e08 r4:00000000 [<81ab6ec8>] (__mutex_lock_slowpath) from [<81ab6f1c>] (mutex_lock+0x3c/0x40 kernel/locking/mutex.c:290) [<81ab6ee0>] (mutex_lock) from [<804f4260>] (_vm_unmap_aliases+0x68/0x240 mm/vmalloc.c:2944) [<804f41f8>] (_vm_unmap_aliases) from [<804f8048>] (vm_reset_perms mm/vmalloc.c:3375 [inline]) [<804f41f8>] (_vm_unmap_aliases) from [<804f8048>] (vfree+0x16c/0x210 mm/vmalloc.c:3454) r10:83016170 r9:00000001 r8:00000000 r7:ffffffff r6:00000000 r5:88407480 r4:00000000 [<804f7edc>] (vfree) from [<80563e54>] (execmem_free+0x30/0x50 mm/execmem.c:503) r9:83018405 r8:86832400 r7:00000000 r6:83018400 r5:00001000 r4:7f292000 [<80563e24>] (execmem_free) from [<803cb1cc>] (bpf_jit_free_exec+0x10/0x14 kernel/bpf/core.c:1052) r5:00001000 r4:ea90d000 [<803cb1bc>] (bpf_jit_free_exec) from [<803cb5ac>] (bpf_jit_binary_free kernel/bpf/core.c:1098 [inline]) [<803cb1bc>] (bpf_jit_free_exec) from [<803cb5ac>] (bpf_jit_free+0x68/0xe4 kernel/bpf/core.c:1221) [<803cb544>] (bpf_jit_free) from [<803cc6d4>] (bpf_prog_free_deferred+0x140/0x158 kernel/bpf/core.c:2919) r5:884fa38c r4:86b84100 [<803cc594>] (bpf_prog_free_deferred) from [<80275db8>] (process_one_work+0x1b4/0x4f4 kernel/workqueue.c:3257) r7:dddcfb40 r6:83018400 r5:884fa38c r4:86b84100 [<80275c04>] (process_one_work) from [<802764f8>] (process_scheduled_works kernel/workqueue.c:3340 [inline]) [<80275c04>] (process_one_work) from [<802764f8>] (worker_thread+0x1fc/0x3d8 kernel/workqueue.c:3421) r10:61c88647 r9:86832400 r8:86b8412c r7:82804d80 r6:dddcfb40 r5:dddcfb60 r4:86b84100 [<802762fc>] (worker_thread) from [<8027f6fc>] (kthread+0x12c/0x280 kernel/kthread.c:463) r10:00000000 r9:86b84100 r8:802762fc r7:ed4dde60 r6:86b84f80 r5:86832400 r4:00000001 [<8027f5d0>] (kthread) from [<80200114>] (ret_from_fork+0x14/0x20 arch/arm/kernel/entry-common.S:137) Exception stack(0xe0391fb0 to 0xe0391ff8) 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 r5:8027f5d0 r4:869890c0 INFO: task kworker/0:11:5955 is blocked on a mutex likely owned by task kworker/1:20:6031. task:kworker/1:20 state:R running task stack:0 pid:6031 tgid:6031 ppid:2 task_flags:0x4208060 flags:0x00000000 Workqueue: events bpf_prog_free_deferred Call trace: [<81ab1a1c>] (__schedule) from [<81ab30fc>] (preempt_schedule_irq+0x40/0xa8 kernel/sched/core.c:7190) r10:8280c9f8 r9:84c4d400 r8:80200c04 r7:dfb75d54 r6:ffffffff r5:84c4d400 r4:00000000 [<81ab30bc>] (preempt_schedule_irq) from [<80200c24>] (svc_preempt+0x8/0x18) Exception stack(0xdfb75d20 to 0xdfb75d68) 5d20: e66fe000 ff6e8000 00000001 80239018 7f230000 00000001 82ace204 82acd5e0 5d40: 7f230000 ff6e8000 8280c9f8 dfb75d9c dfb75da0 dfb75d70 8022fe10 80239030 5d60: 80000113 ffffffff r5:80000113 r4:80239030 [<8022fdac>] (flush_tlb_kernel_range) from [<804f4024>] (__purge_vmap_area_lazy+0x284/0x458 mm/vmalloc.c:2369) r4:82ace224 [<804f3da0>] (__purge_vmap_area_lazy) from [<804f43dc>] (_vm_unmap_aliases+0x1e4/0x240 mm/vmalloc.c:2983) r10:00000000 r9:00000000 r8:00000000 r7:ffffffff r6:dfb75dc0 r5:dfb75e08 r4:dfb75dc0 [<804f41f8>] (_vm_unmap_aliases) from [<804f8048>] (vm_reset_perms mm/vmalloc.c:3375 [inline]) [<804f41f8>] (_vm_unmap_aliases) from [<804f8048>] (vfree+0x16c/0x210 mm/vmalloc.c:3454) r10:83016170 r9:00000001 r8:00000000 r7:ffffffff r6:00000000 r5:87cb7b00 r4:00000000 [<804f7edc>] (vfree) from [<80563e54>] (execmem_free+0x30/0x50 mm/execmem.c:503) r9:83018605 r8:84c4d400 r7:00000000 r6:83018600 r5:00001000 r4:7f288000 [<80563e24>] (execmem_free) from [<803cb1cc>] (bpf_jit_free_exec+0x10/0x14 kernel/bpf/core.c:1052) r5:00001000 r4:ea653000 [<803cb1bc>] (bpf_jit_free_exec) from [<803cb5ac>] (bpf_jit_binary_free kernel/bpf/core.c:1098 [inline]) [<803cb1bc>] (bpf_jit_free_exec) from [<803cb5ac>] (bpf_jit_free+0x68/0xe4 kernel/bpf/core.c:1221) [<803cb544>] (bpf_jit_free) from [<803cc6d4>] (bpf_prog_free_deferred+0x140/0x158 kernel/bpf/core.c:2919) r5:87ec138c r4:87d4a100 [<803cc594>] (bpf_prog_free_deferred) from [<80275db8>] (process_one_work+0x1b4/0x4f4 kernel/workqueue.c:3257) r7:ddde3b40 r6:83018600 r5:87ec138c r4:87d4a100 [<80275c04>] (process_one_work) from [<802764f8>] (process_scheduled_works kernel/workqueue.c:3340 [inline]) [<80275c04>] (process_one_work) from [<802764f8>] (worker_thread+0x1fc/0x3d8 kernel/workqueue.c:3421) r10:61c88647 r9:84c4d400 r8:87d4a12c r7:82804d80 r6:ddde3b40 r5:ddde3b60 r4:87d4a100 [<802762fc>] (worker_thread) from [<8027f6fc>] (kthread+0x12c/0x280 kernel/kthread.c:463) r10:00000000 r9:87d4a100 r8:802762fc r7:ea5e9e60 r6:87d4a000 r5:84c4d400 r4:00000001 [<8027f5d0>] (kthread) from [<80200114>] (ret_from_fork+0x14/0x20 arch/arm/kernel/entry-common.S:137) Exception stack(0xdfb75fb0 to 0xdfb75ff8) 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 r5:8027f5d0 r4:869890c0 INFO: task kworker/0:14:5977 blocked for more than 430 seconds. Not tainted syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/0:14 state:D stack:0 pid:5977 tgid:5977 ppid:2 task_flags:0x4208060 flags:0x00000000 Workqueue: events bpf_prog_free_deferred Call trace: [<81ab1a1c>] (__schedule) from [<81ab2cc8>] (__schedule_loop kernel/sched/core.c:6945 [inline]) [<81ab1a1c>] (__schedule) from [<81ab2cc8>] (schedule+0x2c/0x130 kernel/sched/core.c:6960) r10:e038dd84 r9:829174a8 r8:60000113 r7:829174a8 r6:e038dd8c r5:83f02400 r4:83f02400 [<81ab2c9c>] (schedule) from [<81ab2e50>] (schedule_preempt_disabled+0x18/0x24 kernel/sched/core.c:7017) r5:83f02400 r4:829174a4 [<81ab2e38>] (schedule_preempt_disabled) from [<81ab64d4>] (__mutex_lock_common kernel/locking/mutex.c:692 [inline]) [<81ab2e38>] (schedule_preempt_disabled) from [<81ab64d4>] (__mutex_lock.constprop.0+0x658/0xf8c kernel/locking/mutex.c:776) [<81ab5e7c>] (__mutex_lock.constprop.0) from [<81ab6edc>] (__mutex_lock_slowpath+0x14/0x18 kernel/locking/mutex.c:1065) r10:8280c9a4 r9:00000001 r8:00000000 r7:ffffffff r6:00000000 r5:e038de08 r4:00000000 [<81ab6ec8>] (__mutex_lock_slowpath) from [<81ab6f1c>] (mutex_lock+0x3c/0x40 kernel/locking/mutex.c:290) [<81ab6ee0>] (mutex_lock) from [<804f4260>] (_vm_unmap_aliases+0x68/0x240 mm/vmalloc.c:2944) [<804f41f8>] (_vm_unmap_aliases) from [<804f8048>] (vm_reset_perms mm/vmalloc.c:3375 [inline]) [<804f41f8>] (_vm_unmap_aliases) from [<804f8048>] (vfree+0x16c/0x210 mm/vmalloc.c:3454) r10:83016170 r9:00000001 r8:00000000 r7:ffffffff r6:00000000 r5:87cb7780 r4:00000000 [<804f7edc>] (vfree) from [<80563e54>] (execmem_free+0x30/0x50 mm/execmem.c:503) r9:83018405 r8:83f02400 r7:00000000 r6:83018400 r5:00001000 r4:7f28e000 [<80563e24>] (execmem_free) from [<803cb1cc>] (bpf_jit_free_exec+0x10/0x14 kernel/bpf/core.c:1052) r5:00001000 r4:ea8af000 [<803cb1bc>] (bpf_jit_free_exec) from [<803cb5ac>] (bpf_jit_binary_free kernel/bpf/core.c:1098 [inline]) [<803cb1bc>] (bpf_jit_free_exec) from [<803cb5ac>] (bpf_jit_free+0x68/0xe4 kernel/bpf/core.c:1221) [<803cb544>] (bpf_jit_free) from [<803cc6d4>] (bpf_prog_free_deferred+0x140/0x158 kernel/bpf/core.c:2919) r5:864c6b8c r4:86b84e00 [<803cc594>] (bpf_prog_free_deferred) from [<80275db8>] (process_one_work+0x1b4/0x4f4 kernel/workqueue.c:3257) r7:dddcfb40 r6:83018400 r5:864c6b8c r4:86b84e00 [<80275c04>] (process_one_work) from [<802764f8>] (process_scheduled_works kernel/workqueue.c:3340 [inline]) [<80275c04>] (process_one_work) from [<802764f8>] (worker_thread+0x1fc/0x3d8 kernel/workqueue.c:3421) r10:61c88647 r9:83f02400 r8:86b84e2c r7:82804d80 r6:dddcfb40 r5:dddcfb60 r4:86b84e00 [<802762fc>] (worker_thread) from [<8027f6fc>] (kthread+0x12c/0x280 kernel/kthread.c:463) r10:00000000 r9:86b84e00 r8:802762fc r7:e44a9e60 r6:87d67380 r5:83f02400 r4:00000001 [<8027f5d0>] (kthread) from [<80200114>] (ret_from_fork+0x14/0x20 arch/arm/kernel/entry-common.S:137) Exception stack(0xe038dfb0 to 0xe038dff8) dfa0: 00000000 00000000 00000000 00000000 dfc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 dfe0: 00000000 00000000 00000000 00000000 00000013 00000000 r10:00000000 r9:00000000 r8:00000000 r7:00000000 r6:00000000 r5:8027f5d0 r4:884044c0 INFO: task kworker/0:14:5977 is blocked on a mutex likely owned by task kworker/1:20:6031. task:kworker/1:20 state:R running task stack:0 pid:6031 tgid:6031 ppid:2 task_flags:0x4208060 flags:0x00000000 Workqueue: events bpf_prog_free_deferred Call trace: [<81ab1a1c>] (__schedule) from [<81ab30fc>] (preempt_schedule_irq+0x40/0xa8 kernel/sched/core.c:7190) r10:8280c9f8 r9:84c4d400 r8:80200c04 r7:dfb75d54 r6:ffffffff r5:84c4d400 r4:00000000 [<81ab30bc>] (preempt_schedule_irq) from [<80200c24>] (svc_preempt+0x8/0x18) Exception stack(0xdfb75d20 to 0xdfb75d68) 5d20: e6916000 ff6e8000 00000001 80239018 7f230000 00000001 82ace204 82acd5e0 5d40: 7f230000 ff6e8000 8280c9f8 dfb75d9c dfb75da0 dfb75d70 8022fe10 80239030 5d60: 80000113 ffffffff r5:80000113 r4:80239030 [<8022fdac>] (flush_tlb_kernel_range) from [<804f4024>] (__purge_vmap_area_lazy+0x284/0x458 mm/vmalloc.c:2369) r4:82ace224 [<804f3da0>] (__purge_vmap_area_lazy) from [<804f43dc>] (_vm_unmap_aliases+0x1e4/0x240 mm/vmalloc.c:2983) r10:00000000 r9:00000000 r8:00000000 r7:ffffffff r6:dfb75dc0 r5:dfb75e08 r4:dfb75dc0 [<804f41f8>] (_vm_unmap_aliases) from [<804f8048>] (vm_reset_perms mm/vmalloc.c:3375 [inline]) [<804f41f8>] (_vm_unmap_aliases) from [<804f8048>] (vfree+0x16c/0x210 mm/vmalloc.c:3454) r10:83016170 r9:00000001 r8:00000000 r7:ffffffff r6:00000000 r5:87cb7b00 r4:00000000 [<804f7edc>] (vfree) from [<80563e54>] (execmem_free+0x30/0x50 mm/execmem.c:503) r9:83018605 r8:84c4d400 r7:00000000 r6:83018600 r5:00001000 r4:7f288000 [<80563e24>] (execmem_free) from [<803cb1cc>] (bpf_jit_free_exec+0x10/0x14 kernel/bpf/core.c:1052) r5:00001000 r4:ea653000 [<803cb1bc>] (bpf_jit_free_exec) from [<803cb5ac>] (bpf_jit_binary_free kernel/bpf/core.c:1098 [inline]) [<803cb1bc>] (bpf_jit_free_exec) from [<803cb5ac>] (bpf_jit_free+0x68/0xe4 kernel/bpf/core.c:1221) [<803cb544>] (bpf_jit_free) from [<803cc6d4>] (bpf_prog_free_deferred+0x140/0x158 kernel/bpf/core.c:2919) r5:87ec138c r4:87d4a100 [<803cc594>] (bpf_prog_free_deferred) from [<80275db8>] (process_one_work+0x1b4/0x4f4 kernel/workqueue.c:3257) r7:ddde3b40 r6:83018600 r5:87ec138c r4:87d4a100 [<80275c04>] (process_one_work) from [<802764f8>] (process_scheduled_works kernel/workqueue.c:3340 [inline]) [<80275c04>] (process_one_work) from [<802764f8>] (worker_thread+0x1fc/0x3d8 kernel/workqueue.c:3421) r10:61c88647 r9:84c4d400 r8:87d4a12c r7:82804d80 r6:ddde3b40 r5:ddde3b60 r4:87d4a100 [<802762fc>] (worker_thread) from [<8027f6fc>] (kthread+0x12c/0x280 kernel/kthread.c:463) r10:00000000 r9:87d4a100 r8:802762fc r7:ea5e9e60 r6:87d4a000 r5:84c4d400 r4:00000001 [<8027f5d0>] (kthread) from [<80200114>] (ret_from_fork+0x14/0x20 arch/arm/kernel/entry-common.S:137) Exception stack(0xdfb75fb0 to 0xdfb75ff8) 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 r5:8027f5d0 r4:869890c0 INFO: task kworker/1:21:6032 blocked for more than 430 seconds. Not tainted syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/1:21 state:D stack:0 pid:6032 tgid:6032 ppid:2 task_flags:0x4208060 flags:0x00000000 Workqueue: events bpf_prog_free_deferred Call trace: [<81ab1a1c>] (__schedule) from [<81ab2cc8>] (__schedule_loop kernel/sched/core.c:6945 [inline]) [<81ab1a1c>] (__schedule) from [<81ab2cc8>] (schedule+0x2c/0x130 kernel/sched/core.c:6960) r10:ea601d84 r9:829174a8 r8:60000113 r7:829174a8 r6:ea601d8c r5:83eda400 r4:83eda400 [<81ab2c9c>] (schedule) from [<81ab2e50>] (schedule_preempt_disabled+0x18/0x24 kernel/sched/core.c:7017) r5:83eda400 r4:829174a4 [<81ab2e38>] (schedule_preempt_disabled) from [<81ab64d4>] (__mutex_lock_common kernel/locking/mutex.c:692 [inline]) [<81ab2e38>] (schedule_preempt_disabled) from [<81ab64d4>] (__mutex_lock.constprop.0+0x658/0xf8c kernel/locking/mutex.c:776) [<81ab5e7c>] (__mutex_lock.constprop.0) from [<81ab6edc>] (__mutex_lock_slowpath+0x14/0x18 kernel/locking/mutex.c:1065) r10:8280c9a4 r9:00000001 r8:00000000 r7:ffffffff r6:00000000 r5:ea601e08 r4:00000000 [<81ab6ec8>] (__mutex_lock_slowpath) from [<81ab6f1c>] (mutex_lock+0x3c/0x40 kernel/locking/mutex.c:290) [<81ab6ee0>] (mutex_lock) from [<804f4260>] (_vm_unmap_aliases+0x68/0x240 mm/vmalloc.c:2944) [<804f41f8>] (_vm_unmap_aliases) from [<804f8048>] (vm_reset_perms mm/vmalloc.c:3375 [inline]) [<804f41f8>] (_vm_unmap_aliases) from [<804f8048>] (vfree+0x16c/0x210 mm/vmalloc.c:3454) r10:83016170 r9:00000001 r8:00000000 r7:ffffffff r6:00000000 r5:87d51740 r4:00000000 [<804f7edc>] (vfree) from [<80563e54>] (execmem_free+0x30/0x50 mm/execmem.c:503) r9:83018605 r8:83eda400 r7:00000000 r6:83018600 r5:00001000 r4:7f230000 [<80563e24>] (execmem_free) from [<803cb1cc>] (bpf_jit_free_exec+0x10/0x14 kernel/bpf/core.c:1052) r5:00001000 r4:dfac3000 [<803cb1bc>] (bpf_jit_free_exec) from [<803cb5ac>] (bpf_jit_binary_free kernel/bpf/core.c:1098 [inline]) [<803cb1bc>] (bpf_jit_free_exec) from [<803cb5ac>] (bpf_jit_free+0x68/0xe4 kernel/bpf/core.c:1221) [<803cb544>] (bpf_jit_free) from [<803cc6d4>] (bpf_prog_free_deferred+0x140/0x158 kernel/bpf/core.c:2919) r5:867d938c r4:87d4af00 [<803cc594>] (bpf_prog_free_deferred) from [<80275db8>] (process_one_work+0x1b4/0x4f4 kernel/workqueue.c:3257) r7:ddde3b40 r6:83018600 r5:867d938c r4:87d4af00 [<80275c04>] (process_one_work) from [<802764f8>] (process_scheduled_works kernel/workqueue.c:3340 [inline]) [<80275c04>] (process_one_work) from [<802764f8>] (worker_thread+0x1fc/0x3d8 kernel/workqueue.c:3421) r10:61c88647 r9:83eda400 r8:87d4af2c r7:82804d80 r6:ddde3b40 r5:ddde3b60 r4:87d4af00 [<802762fc>] (worker_thread) from [<8027f6fc>] (kthread+0x12c/0x280 kernel/kthread.c:463) r10:00000000 r9:87d4af00 r8:802762fc r7:ea5e9e60 r6:87d4a180 r5:83eda400 r4:00000001 [<8027f5d0>] (kthread) from [<80200114>] (ret_from_fork+0x14/0x20 arch/arm/kernel/entry-common.S:137) Exception stack(0xea601fb0 to 0xea601ff8) 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 r5:8027f5d0 r4:858a4a80 INFO: task kworker/1:21:6032 is blocked on a mutex likely owned by task kworker/1:20:6031. task:kworker/1:20 state:R running task stack:0 pid:6031 tgid:6031 ppid:2 task_flags:0x4208060 flags:0x00000000 Workqueue: events bpf_prog_free_deferred Call trace: [<81ab1a1c>] (__schedule) from [<81ab30fc>] (preempt_schedule_irq+0x40/0xa8 kernel/sched/core.c:7190) r10:8280c9f8 r9:84c4d400 r8:80200c04 r7:dfb75d54 r6:ffffffff r5:84c4d400 r4:00000000 [<81ab30bc>] (preempt_schedule_irq) from [<80200c24>] (svc_preempt+0x8/0x18) Exception stack(0xdfb75d20 to 0xdfb75d68) 5d20: e6aa8000 ff6e8000 00000001 80239018 7f230000 00000001 82ace204 82acd5e0 5d40: 7f230000 ff6e8000 8280c9f8 dfb75d9c dfb75da0 dfb75d70 8022fe10 80239030 5d60: 80000113 ffffffff r5:80000113 r4:80239030 [<8022fdac>] (flush_tlb_kernel_range) from [<804f4024>] (__purge_vmap_area_lazy+0x284/0x458 mm/vmalloc.c:2369) r4:82ace224 [<804f3da0>] (__purge_vmap_area_lazy) from [<804f43dc>] (_vm_unmap_aliases+0x1e4/0x240 mm/vmalloc.c:2983) r10:00000000 r9:00000000 r8:00000000 r7:ffffffff r6:dfb75dc0 r5:dfb75e08 r4:dfb75dc0 [<804f41f8>] (_vm_unmap_aliases) from [<804f8048>] (vm_reset_perms mm/vmalloc.c:3375 [inline]) [<804f41f8>] (_vm_unmap_aliases) from [<804f8048>] (vfree+0x16c/0x210 mm/vmalloc.c:3454) r10:83016170 r9:00000001 r8:00000000 r7:ffffffff r6:00000000 r5:87cb7b00 r4:00000000 [<804f7edc>] (vfree) from [<80563e54>] (execmem_free+0x30/0x50 mm/execmem.c:503) r9:83018605 r8:84c4d400 r7:00000000 r6:83018600 r5:00001000 r4:7f288000 [<80563e24>] (execmem_free) from [<803cb1cc>] (bpf_jit_free_exec+0x10/0x14 kernel/bpf/core.c:1052) r5:00001000 r4:ea653000 [<803cb1bc>] (bpf_jit_free_exec) from [<803cb5ac>] (bpf_jit_binary_free kernel/bpf/core.c:1098 [inline]) [<803cb1bc>] (bpf_jit_free_exec) from [<803cb5ac>] (bpf_jit_free+0x68/0xe4 kernel/bpf/core.c:1221) [<803cb544>] (bpf_jit_free) from [<803cc6d4>] (bpf_prog_free_deferred+0x140/0x158 kernel/bpf/core.c:2919) r5:87ec138c r4:87d4a100 [<803cc594>] (bpf_prog_free_deferred) from [<80275db8>] (process_one_work+0x1b4/0x4f4 kernel/workqueue.c:3257) r7:ddde3b40 r6:83018600 r5:87ec138c r4:87d4a100 [<80275c04>] (process_one_work) from [<802764f8>] (process_scheduled_works kernel/workqueue.c:3340 [inline]) [<80275c04>] (process_one_work) from [<802764f8>] (worker_thread+0x1fc/0x3d8 kernel/workqueue.c:3421) r10:61c88647 r9:84c4d400 r8:87d4a12c r7:82804d80 r6:ddde3b40 r5:ddde3b60 r4:87d4a100 [<802762fc>] (worker_thread) from [<8027f6fc>] (kthread+0x12c/0x280 kernel/kthread.c:463) r10:00000000 r9:87d4a100 r8:802762fc r7:ea5e9e60 r6:87d4a000 r5:84c4d400 r4:00000001 [<8027f5d0>] (kthread) from [<80200114>] (ret_from_fork+0x14/0x20 arch/arm/kernel/entry-common.S:137) Exception stack(0xdfb75fb0 to 0xdfb75ff8) 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 r5:8027f5d0 r4:869890c0 INFO: task kworker/1:22:6039 blocked for more than 430 seconds. Not tainted syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/1:22 state:D stack:0 pid:6039 tgid:6039 ppid:2 task_flags:0x4208060 flags:0x00000000 Workqueue: events bpf_prog_free_deferred Call trace: [<81ab1a1c>] (__schedule) from [<81ab2cc8>] (__schedule_loop kernel/sched/core.c:6945 [inline]) [<81ab1a1c>] (__schedule) from [<81ab2cc8>] (schedule+0x2c/0x130 kernel/sched/core.c:6960) r10:ea651d84 r9:829174a8 r8:60000113 r7:829174a8 r6:ea651d8c r5:83ede000 r4:83ede000 [<81ab2c9c>] (schedule) from [<81ab2e50>] (schedule_preempt_disabled+0x18/0x24 kernel/sched/core.c:7017) r5:83ede000 r4:829174a4 [<81ab2e38>] (schedule_preempt_disabled) from [<81ab64d4>] (__mutex_lock_common kernel/locking/mutex.c:692 [inline]) [<81ab2e38>] (schedule_preempt_disabled) from [<81ab64d4>] (__mutex_lock.constprop.0+0x658/0xf8c kernel/locking/mutex.c:776) [<81ab5e7c>] (__mutex_lock.constprop.0) from [<81ab6edc>] (__mutex_lock_slowpath+0x14/0x18 kernel/locking/mutex.c:1065) r10:8280c9a4 r9:00000001 r8:00000000 r7:ffffffff r6:00000000 r5:ea651e08 r4:00000000 [<81ab6ec8>] (__mutex_lock_slowpath) from [<81ab6f1c>] (mutex_lock+0x3c/0x40 kernel/locking/mutex.c:290) [<81ab6ee0>] (mutex_lock) from [<804f4260>] (_vm_unmap_aliases+0x68/0x240 mm/vmalloc.c:2944) [<804f41f8>] (_vm_unmap_aliases) from [<804f8048>] (vm_reset_perms mm/vmalloc.c:3375 [inline]) [<804f41f8>] (_vm_unmap_aliases) from [<804f8048>] (vfree+0x16c/0x210 mm/vmalloc.c:3454) r10:83016170 r9:00000001 r8:00000000 r7:ffffffff r6:00000000 r5:852650c0 r4:00000000 [<804f7edc>] (vfree) from [<80563e54>] (execmem_free+0x30/0x50 mm/execmem.c:503) r9:83018605 r8:83ede000 r7:00000000 r6:83018600 r5:00001000 r4:7f28a000 [<80563e24>] (execmem_free) from [<803cb1cc>] (bpf_jit_free_exec+0x10/0x14 kernel/bpf/core.c:1052) r5:00001000 r4:ea6a1000 [<803cb1bc>] (bpf_jit_free_exec) from [<803cb5ac>] (bpf_jit_binary_free kernel/bpf/core.c:1098 [inline]) [<803cb1bc>] (bpf_jit_free_exec) from [<803cb5ac>] (bpf_jit_free+0x68/0xe4 kernel/bpf/core.c:1221) [<803cb544>] (bpf_jit_free) from [<803cc6d4>] (bpf_prog_free_deferred+0x140/0x158 kernel/bpf/core.c:2919) r5:86756f8c r4:87d4a580 [<803cc594>] (bpf_prog_free_deferred) from [<80275db8>] (process_one_work+0x1b4/0x4f4 kernel/workqueue.c:3257) r7:ddde3b40 r6:83018600 r5:86756f8c r4:87d4a580 [<80275c04>] (process_one_work) from [<802764f8>] (process_scheduled_works kernel/workqueue.c:3340 [inline]) [<80275c04>] (process_one_work) from [<802764f8>] (worker_thread+0x1fc/0x3d8 kernel/workqueue.c:3421) r10:61c88647 r9:83ede000 r8:87d4a5ac r7:82804d80 r6:ddde3b40 r5:ddde3b60 r4:87d4a580 [<802762fc>] (worker_thread) from [<8027f6fc>] (kthread+0x12c/0x280 kernel/kthread.c:463) r10:00000000 r9:87d4a580 r8:802762fc r7:ea601e60 r6:87d4ac00 r5:83ede000 r4:00000001 [<8027f5d0>] (kthread) from [<80200114>] (ret_from_fork+0x14/0x20 arch/arm/kernel/entry-common.S:137) Exception stack(0xea651fb0 to 0xea651ff8) 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 r5:8027f5d0 r4:87cb7a80 INFO: task kworker/1:22:6039 is blocked on a mutex likely owned by task kworker/1:20:6031. task:kworker/1:20 state:R running task stack:0 pid:6031 tgid:6031 ppid:2 task_flags:0x4208060 flags:0x00000000 Workqueue: events bpf_prog_free_deferred Call trace: [<81ab1a1c>] (__schedule) from [<81ab30fc>] (preempt_schedule_irq+0x40/0xa8 kernel/sched/core.c:7190) r10:8280c9f8 r9:84c4d400 r8:80200c04 r7:dfb75d54 r6:ffffffff r5:84c4d400 r4:00000000 [<81ab30bc>] (preempt_schedule_irq) from [<80200c24>] (svc_preempt+0x8/0x18) Exception stack(0xdfb75d20 to 0xdfb75d68) 5d20: e6aa8000 ff6e8000 00000001 80239018 7f230000 00000001 82ace204 82acd5e0 5d40: 7f230000 ff6e8000 8280c9f8 dfb75d9c dfb75da0 dfb75d70 8022fe10 80239030 5d60: 80000113 ffffffff r5:80000113 r4:80239030 [<8022fdac>] (flush_tlb_kernel_range) from [<804f4024>] (__purge_vmap_area_lazy+0x284/0x458 mm/vmalloc.c:2369) r4:82ace224 [<804f3da0>] (__purge_vmap_area_lazy) from [<804f43dc>] (_vm_unmap_aliases+0x1e4/0x240 mm/vmalloc.c:2983) r10:00000000 r9:00000000 r8:00000000 r7:ffffffff r6:dfb75dc0 r5:dfb75e08 r4:dfb75dc0 [<804f41f8>] (_vm_unmap_aliases) from [<804f8048>] (vm_reset_perms mm/vmalloc.c:3375 [inline]) [<804f41f8>] (_vm_unmap_aliases) from [<804f8048>] (vfree+0x16c/0x210 mm/vmalloc.c:3454) r10:83016170 r9:00000001 r8:00000000 r7:ffffffff r6:00000000 r5:87cb7b00 r4:00000000 [<804f7edc>] (vfree) from [<80563e54>] (execmem_free+0x30/0x50 mm/execmem.c:503) r9:83018605 r8:84c4d400 r7:00000000 r6:83018600 r5:00001000 r4:7f288000 [<80563e24>] (execmem_free) from [<803cb1cc>] (bpf_jit_free_exec+0x10/0x14 kernel/bpf/core.c:1052) r5:00001000 r4:ea653000 [<803cb1bc>] (bpf_jit_free_exec) from [<803cb5ac>] (bpf_jit_binary_free kernel/bpf/core.c:1098 [inline]) [<803cb1bc>] (bpf_jit_free_exec) from [<803cb5ac>] (bpf_jit_free+0x68/0xe4 kernel/bpf/core.c:1221) [<803cb544>] (bpf_jit_free) from [<803cc6d4>] (bpf_prog_free_deferred+0x140/0x158 kernel/bpf/core.c:2919) r5:87ec138c r4:87d4a100 [<803cc594>] (bpf_prog_free_deferred) from [<80275db8>] (process_one_work+0x1b4/0x4f4 kernel/workqueue.c:3257) r7:ddde3b40 r6:83018600 r5:87ec138c r4:87d4a100 [<80275c04>] (process_one_work) from [<802764f8>] (process_scheduled_works kernel/workqueue.c:3340 [inline]) [<80275c04>] (process_one_work) from [<802764f8>] (worker_thread+0x1fc/0x3d8 kernel/workqueue.c:3421) r10:61c88647 r9:84c4d400 r8:87d4a12c r7:82804d80 r6:ddde3b40 r5:ddde3b60 r4:87d4a100 [<802762fc>] (worker_thread) from [<8027f6fc>] (kthread+0x12c/0x280 kernel/kthread.c:463) r10:00000000 r9:87d4a100 r8:802762fc r7:ea5e9e60 r6:87d4a000 r5:84c4d400 r4:00000001 [<8027f5d0>] (kthread) from [<80200114>] (ret_from_fork+0x14/0x20 arch/arm/kernel/entry-common.S:137) Exception stack(0xdfb75fb0 to 0xdfb75ff8) 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 r5:8027f5d0 r4:869890c0 INFO: task kworker/1:23:6048 blocked for more than 430 seconds. Not tainted syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/1:23 state:D stack:0 pid:6048 tgid:6048 ppid:2 task_flags:0x4208060 flags:0x00000000 Workqueue: events bpf_prog_free_deferred Call trace: [<81ab1a1c>] (__schedule) from [<81ab2cc8>] (__schedule_loop kernel/sched/core.c:6945 [inline]) [<81ab1a1c>] (__schedule) from [<81ab2cc8>] (schedule+0x2c/0x130 kernel/sched/core.c:6960) r10:ea6a5d84 r9:829174a8 r8:60000113 r7:829174a8 r6:ea6a5d8c r5:83efd400 r4:83efd400 [<81ab2c9c>] (schedule) from [<81ab2e50>] (schedule_preempt_disabled+0x18/0x24 kernel/sched/core.c:7017) r5:83efd400 r4:829174a4 [<81ab2e38>] (schedule_preempt_disabled) from [<81ab64d4>] (__mutex_lock_common kernel/locking/mutex.c:692 [inline]) [<81ab2e38>] (schedule_preempt_disabled) from [<81ab64d4>] (__mutex_lock.constprop.0+0x658/0xf8c kernel/locking/mutex.c:776) [<81ab5e7c>] (__mutex_lock.constprop.0) from [<81ab6edc>] (__mutex_lock_slowpath+0x14/0x18 kernel/locking/mutex.c:1065) r10:8280c9a4 r9:00000001 r8:00000000 r7:ffffffff r6:00000000 r5:ea6a5e08 r4:00000000 [<81ab6ec8>] (__mutex_lock_slowpath) from [<81ab6f1c>] (mutex_lock+0x3c/0x40 kernel/locking/mutex.c:290) [<81ab6ee0>] (mutex_lock) from [<804f4260>] (_vm_unmap_aliases+0x68/0x240 mm/vmalloc.c:2944) [<804f41f8>] (_vm_unmap_aliases) from [<804f8048>] (vm_reset_perms mm/vmalloc.c:3375 [inline]) [<804f41f8>] (_vm_unmap_aliases) from [<804f8048>] (vfree+0x16c/0x210 mm/vmalloc.c:3454) r10:83016170 r9:00000001 r8:00000000 r7:ffffffff r6:00000000 r5:86bc5cc0 r4:00000000 [<804f7edc>] (vfree) from [<80563e54>] (execmem_free+0x30/0x50 mm/execmem.c:503) r9:83018605 r8:83efd400 r7:00000000 r6:83018600 r5:00001000 r4:7f28c000 [<80563e24>] (execmem_free) from [<803cb1cc>] (bpf_jit_free_exec+0x10/0x14 kernel/bpf/core.c:1052) r5:00001000 r4:ea859000 [<803cb1bc>] (bpf_jit_free_exec) from [<803cb5ac>] (bpf_jit_binary_free kernel/bpf/core.c:1098 [inline]) [<803cb1bc>] (bpf_jit_free_exec) from [<803cb5ac>] (bpf_jit_free+0x68/0xe4 kernel/bpf/core.c:1221) [<803cb544>] (bpf_jit_free) from [<803cc6d4>] (bpf_prog_free_deferred+0x140/0x158 kernel/bpf/core.c:2919) r5:86755b8c r4:85a2dc00 [<803cc594>] (bpf_prog_free_deferred) from [<80275db8>] (process_one_work+0x1b4/0x4f4 kernel/workqueue.c:3257) r7:ddde3b40 r6:83018600 r5:86755b8c r4:85a2dc00 [<80275c04>] (process_one_work) from [<802764f8>] (process_scheduled_works kernel/workqueue.c:3340 [inline]) [<80275c04>] (process_one_work) from [<802764f8>] (worker_thread+0x1fc/0x3d8 kernel/workqueue.c:3421) r10:61c88647 r9:83efd400 r8:85a2dc2c r7:82804d80 r6:ddde3b40 r5:ddde3b60 r4:85a2dc00 [<802762fc>] (worker_thread) from [<8027f6fc>] (kthread+0x12c/0x280 kernel/kthread.c:463) r10:00000000 r9:85a2dc00 r8:802762fc r7:ea5e9e60 r6:85a2df80 r5:83efd400 r4:00000001 [<8027f5d0>] (kthread) from [<80200114>] (ret_from_fork+0x14/0x20 arch/arm/kernel/entry-common.S:137) Exception stack(0xea6a5fb0 to 0xea6a5ff8) 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 r5:8027f5d0 r4:86769980 INFO: task kworker/1:23:6048 is blocked on a mutex likely owned by task kworker/1:20:6031. task:kworker/1:20 state:R running task stack:0 pid:6031 tgid:6031 ppid:2 task_flags:0x4208060 flags:0x00000000 Workqueue: events bpf_prog_free_deferred Call trace: [<81ab1a1c>] (__schedule) from [<81ab30fc>] (preempt_schedule_irq+0x40/0xa8 kernel/sched/core.c:7190) r10:8280c9f8 r9:84c4d400 r8:80200c04 r7:dfb75d54 r6:ffffffff r5:84c4d400 r4:00000000 [<81ab30bc>] (preempt_schedule_irq) from [<80200c24>] (svc_preempt+0x8/0x18) Exception stack(0xdfb75d20 to 0xdfb75d68) 5d20: e6d54000 ff6e8000 00000001 80239018 7f230000 00000001 82ace204 82acd5e0 5d40: 7f230000 ff6e8000 8280c9f8 dfb75d9c dfb75da0 dfb75d70 8022fe10 80239030 5d60: 80000113 ffffffff r5:80000113 r4:80239030 [<8022fdac>] (flush_tlb_kernel_range) from [<804f4024>] (__purge_vmap_area_lazy+0x284/0x458 mm/vmalloc.c:2369) r4:82ace224 [<804f3da0>] (__purge_vmap_area_lazy) from [<804f43dc>] (_vm_unmap_aliases+0x1e4/0x240 mm/vmalloc.c:2983) r10:00000000 r9:00000000 r8:00000000 r7:ffffffff r6:dfb75dc0 r5:dfb75e08 r4:dfb75dc0 [<804f41f8>] (_vm_unmap_aliases) from [<804f8048>] (vm_reset_perms mm/vmalloc.c:3375 [inline]) [<804f41f8>] (_vm_unmap_aliases) from [<804f8048>] (vfree+0x16c/0x210 mm/vmalloc.c:3454) r10:83016170 r9:00000001 r8:00000000 r7:ffffffff r6:00000000 r5:87cb7b00 r4:00000000 [<804f7edc>] (vfree) from [<80563e54>] (execmem_free+0x30/0x50 mm/execmem.c:503) r9:83018605 r8:84c4d400 r7:00000000 r6:83018600 r5:00001000 r4:7f288000 [<80563e24>] (execmem_free) from [<803cb1cc>] (bpf_jit_free_exec+0x10/0x14 kernel/bpf/core.c:1052) r5:00001000 r4:ea653000 [<803cb1bc>] (bpf_jit_free_exec) from [<803cb5ac>] (bpf_jit_binary_free kernel/bpf/core.c:1098 [inline]) [<803cb1bc>] (bpf_jit_free_exec) from [<803cb5ac>] (bpf_jit_free+0x68/0xe4 kernel/bpf/core.c:1221) [<803cb544>] (bpf_jit_free) from [<803cc6d4>] (bpf_prog_free_deferred+0x140/0x158 kernel/bpf/core.c:2919) r5:87ec138c r4:87d4a100 [<803cc594>] (bpf_prog_free_deferred) from [<80275db8>] (process_one_work+0x1b4/0x4f4 kernel/workqueue.c:3257) r7:ddde3b40 r6:83018600 r5:87ec138c r4:87d4a100 [<80275c04>] (process_one_work) from [<802764f8>] (process_scheduled_works kernel/workqueue.c:3340 [inline]) [<80275c04>] (process_one_work) from [<802764f8>] (worker_thread+0x1fc/0x3d8 kernel/workqueue.c:3421) r10:61c88647 r9:84c4d400 r8:87d4a12c r7:82804d80 r6:ddde3b40 r5:ddde3b60 r4:87d4a100 [<802762fc>] (worker_thread) from [<8027f6fc>] (kthread+0x12c/0x280 kernel/kthread.c:463) r10:00000000 r9:87d4a100 r8:802762fc r7:ea5e9e60 r6:87d4a000 r5:84c4d400 r4:00000001 [<8027f5d0>] (kthread) from [<80200114>] (ret_from_fork+0x14/0x20 arch/arm/kernel/entry-common.S:137) Exception stack(0xdfb75fb0 to 0xdfb75ff8) 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 r5:8027f5d0 r4:869890c0 INFO: task kworker/0:16:6073 blocked for more than 430 seconds. Not tainted syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/0:16 state:D stack:0 pid:6073 tgid:6073 ppid:2 task_flags:0x4208060 flags:0x00000000 Workqueue: events bpf_prog_free_deferred Call trace: [<81ab1a1c>] (__schedule) from [<81ab2cc8>] (__schedule_loop kernel/sched/core.c:6945 [inline]) [<81ab1a1c>] (__schedule) from [<81ab2cc8>] (schedule+0x2c/0x130 kernel/sched/core.c:6960) r10:ea915d84 r9:829174a8 r8:60000113 r7:829174a8 r6:ea915d8c r5:85b70000 r4:85b70000 [<81ab2c9c>] (schedule) from [<81ab2e50>] (schedule_preempt_disabled+0x18/0x24 kernel/sched/core.c:7017) r5:85b70000 r4:829174a4 [<81ab2e38>] (schedule_preempt_disabled) from [<81ab64d4>] (__mutex_lock_common kernel/locking/mutex.c:692 [inline]) [<81ab2e38>] (schedule_preempt_disabled) from [<81ab64d4>] (__mutex_lock.constprop.0+0x658/0xf8c kernel/locking/mutex.c:776) [<81ab5e7c>] (__mutex_lock.constprop.0) from [<81ab6edc>] (__mutex_lock_slowpath+0x14/0x18 kernel/locking/mutex.c:1065) r10:8280c9a4 r9:00000001 r8:00000000 r7:ffffffff r6:00000000 r5:ea915e08 r4:00000000 [<81ab6ec8>] (__mutex_lock_slowpath) from [<81ab6f1c>] (mutex_lock+0x3c/0x40 kernel/locking/mutex.c:290) [<81ab6ee0>] (mutex_lock) from [<804f4260>] (_vm_unmap_aliases+0x68/0x240 mm/vmalloc.c:2944) [<804f41f8>] (_vm_unmap_aliases) from [<804f8048>] (vm_reset_perms mm/vmalloc.c:3375 [inline]) [<804f41f8>] (_vm_unmap_aliases) from [<804f8048>] (vfree+0x16c/0x210 mm/vmalloc.c:3454) r10:83016170 r9:00000001 r8:00000000 r7:ffffffff r6:00000000 r5:85265640 r4:00000000 [<804f7edc>] (vfree) from [<80563e54>] (execmem_free+0x30/0x50 mm/execmem.c:503) r9:83018405 r8:85b70000 r7:00000000 r6:83018400 r5:00001000 r4:7f294000 [<80563e24>] (execmem_free) from [<803cb1cc>] (bpf_jit_free_exec+0x10/0x14 kernel/bpf/core.c:1052) r5:00001000 r4:eaa2d000 [<803cb1bc>] (bpf_jit_free_exec) from [<803cb5ac>] (bpf_jit_binary_free kernel/bpf/core.c:1098 [inline]) [<803cb1bc>] (bpf_jit_free_exec) from [<803cb5ac>] (bpf_jit_free+0x68/0xe4 kernel/bpf/core.c:1221) [<803cb544>] (bpf_jit_free) from [<803cc6d4>] (bpf_prog_free_deferred+0x140/0x158 kernel/bpf/core.c:2919) r5:884faf8c r4:86b84a00 [<803cc594>] (bpf_prog_free_deferred) from [<80275db8>] (process_one_work+0x1b4/0x4f4 kernel/workqueue.c:3257) r7:dddcfb40 r6:83018400 r5:884faf8c r4:86b84a00 [<80275c04>] (process_one_work) from [<802764f8>] (process_scheduled_works kernel/workqueue.c:3340 [inline]) [<80275c04>] (process_one_work) from [<802764f8>] (worker_thread+0x1fc/0x3d8 kernel/workqueue.c:3421) r10:61c88647 r9:85b70000 r8:86b84a2c r7:82804d80 r6:dddcfb40 r5:dddcfb60 r4:86b84a00 [<802762fc>] (worker_thread) from [<8027f6fc>] (kthread+0x12c/0x280 kernel/kthread.c:463) r10:00000000 r9:86b84a00 r8:802762fc r7:ea5ade60 r6:86b84680 r5:85b70000 r4:00000001 [<8027f5d0>] (kthread) from [<80200114>] (ret_from_fork+0x14/0x20 arch/arm/kernel/entry-common.S:137) Exception stack(0xea915fb0 to 0xea915ff8) 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 r5:8027f5d0 r4:87d50480 INFO: task kworker/0:16:6073 is blocked on a mutex likely owned by task kworker/1:20:6031. task:kworker/1:20 state:R running task stack:0 pid:6031 tgid:6031 ppid:2 task_flags:0x4208060 flags:0x00000000 Workqueue: events bpf_prog_free_deferred Call trace: [<81ab1a1c>] (__schedule) from [<81ab30fc>] (preempt_schedule_irq+0x40/0xa8 kernel/sched/core.c:7190) r10:8280c9f8 r9:84c4d400 r8:80200c04 r7:dfb75d54 r6:ffffffff r5:84c4d400 r4:00000000 [<81ab30bc>] (preempt_schedule_irq) from [<80200c24>] (svc_preempt+0x8/0x18) Exception stack(0xdfb75d20 to 0xdfb75d68) 5d20: e6fe1000 ff6e8000 00000001 80239018 7f230000 00000001 82ace204 82acd5e0 5d40: 7f230000 ff6e8000 8280c9f8 dfb75d9c dfb75da0 dfb75d70 8022fe10 80239030 5d60: 80000113 ffffffff r5:80000113 r4:80239030 [<8022fdac>] (flush_tlb_kernel_range) from [<804f4024>] (__purge_vmap_area_lazy+0x284/0x458 mm/vmalloc.c:2369) r4:82ace224 [<804f3da0>] (__purge_vmap_area_lazy) from [<804f43dc>] (_vm_unmap_aliases+0x1e4/0x240 mm/vmalloc.c:2983) r10:00000000 r9:00000000 r8:00000000 r7:ffffffff r6:dfb75dc0 r5:dfb75e08 r4:dfb75dc0 [<804f41f8>] (_vm_unmap_aliases) from [<804f8048>] (vm_reset_perms mm/vmalloc.c:3375 [inline]) [<804f41f8>] (_vm_unmap_aliases) from [<804f8048>] (vfree+0x16c/0x210 mm/vmalloc.c:3454) r10:83016170 r9:00000001 r8:00000000 r7:ffffffff r6:00000000 r5:87cb7b00 r4:00000000 [<804f7edc>] (vfree) from [<80563e54>] (execmem_free+0x30/0x50 mm/execmem.c:503) r9:83018605 r8:84c4d400 r7:00000000 r6:83018600 r5:00001000 r4:7f288000 [<80563e24>] (execmem_free) from [<803cb1cc>] (bpf_jit_free_exec+0x10/0x14 kernel/bpf/core.c:1052) r5:00001000 r4:ea653000 [<803cb1bc>] (bpf_jit_free_exec) from [<803cb5ac>] (bpf_jit_binary_free kernel/bpf/core.c:1098 [inline]) [<803cb1bc>] (bpf_jit_free_exec) from [<803cb5ac>] (bpf_jit_free+0x68/0xe4 kernel/bpf/core.c:1221) [<803cb544>] (bpf_jit_free) from [<803cc6d4>] (bpf_prog_free_deferred+0x140/0x158 kernel/bpf/core.c:2919) r5:87ec138c r4:87d4a100 [<803cc594>] (bpf_prog_free_deferred) from [<80275db8>] (process_one_work+0x1b4/0x4f4 kernel/workqueue.c:3257) r7:ddde3b40 r6:83018600 r5:87ec138c r4:87d4a100 [<80275c04>] (process_one_work) from [<802764f8>] (process_scheduled_works kernel/workqueue.c:3340 [inline]) [<80275c04>] (process_one_work) from [<802764f8>] (worker_thread+0x1fc/0x3d8 kernel/workqueue.c:3421) r10:61c88647 r9:84c4d400 r8:87d4a12c r7:82804d80 r6:ddde3b40 r5:ddde3b60 r4:87d4a100 [<802762fc>] (worker_thread) from [<8027f6fc>] (kthread+0x12c/0x280 kernel/kthread.c:463) r10:00000000 r9:87d4a100 r8:802762fc r7:ea5e9e60 r6:87d4a000 r5:84c4d400 r4:00000001 [<8027f5d0>] (kthread) from [<80200114>] (ret_from_fork+0x14/0x20 arch/arm/kernel/entry-common.S:137) Exception stack(0xdfb75fb0 to 0xdfb75ff8) 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 r5:8027f5d0 r4:869890c0 NMI backtrace for cpu 1 CPU: 1 UID: 0 PID: 30 Comm: khungtaskd Not tainted syzkaller #0 PREEMPT Hardware name: ARM-Versatile Express Call trace: [<80201a74>] (dump_backtrace) from [<80201b70>] (show_stack+0x18/0x1c arch/arm/kernel/traps.c:257) r7:00000000 r6:000e0013 r5:600e0093 r4:8229579c [<80201b58>] (show_stack) from [<8021edec>] (__dump_stack lib/dump_stack.c:94 [inline]) [<80201b58>] (show_stack) from [<8021edec>] (dump_stack_lvl+0x70/0x7c lib/dump_stack.c:120) [<8021ed7c>] (dump_stack_lvl) from [<8021ee10>] (dump_stack+0x18/0x1c lib/dump_stack.c:129) r5:00000001 r4:00000001 [<8021edf8>] (dump_stack) from [<81a9b500>] (nmi_cpu_backtrace+0x160/0x17c lib/nmi_backtrace.c:113) [<81a9b3a0>] (nmi_cpu_backtrace) from [<81a9b64c>] (nmi_trigger_cpumask_backtrace+0x130/0x1d8 lib/nmi_backtrace.c:62) r7:00000001 r6:8280c6d0 r5:8281af1c r4:ffffffff [<81a9b51c>] (nmi_trigger_cpumask_backtrace) from [<8022f818>] (arch_trigger_cpumask_backtrace+0x18/0x1c arch/arm/kernel/smp.c:852) r9:00007e6b r8:8280c850 r7:000b14ad r6:00007e6b r5:82ac27e4 r4:00000048 [<8022f800>] (arch_trigger_cpumask_backtrace) from [<81aa315c>] (trigger_all_cpu_backtrace include/linux/nmi.h:160 [inline]) [<8022f800>] (arch_trigger_cpumask_backtrace) from [<81aa315c>] (__sys_info lib/sys_info.c:157 [inline]) [<8022f800>] (arch_trigger_cpumask_backtrace) from [<81aa315c>] (sys_info+0x68/0xa8 lib/sys_info.c:165) [<81aa30f4>] (sys_info) from [<80383788>] (check_hung_uninterruptible_tasks kernel/hung_task.c:346 [inline]) [<81aa30f4>] (sys_info) from [<80383788>] (watchdog+0x464/0x8a0 kernel/hung_task.c:515) r5:82ac27e4 r4:83e8750c [<80383324>] (watchdog) from [<8027f6fc>] (kthread+0x12c/0x280 kernel/kthread.c:463) r10:00000000 r9:00000000 r8:80383324 r7:8335af80 r6:8335af80 r5:8321d400 r4:00000001 [<8027f5d0>] (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 r5:8027f5d0 r4:832c0e40 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 UID: 0 PID: 2818 Comm: pr/ttyAMA-1 Not tainted syzkaller #0 PREEMPT Hardware name: ARM-Versatile Express PC is at __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:152 [inline] PC is at _raw_spin_unlock_irqrestore+0x28/0x54 kernel/locking/spinlock.c:194 LR is at spin_unlock_irqrestore include/linux/spinlock.h:406 [inline] LR is at __uart_port_unlock_irqrestore include/linux/serial_core.h:616 [inline] LR is at pl011_console_device_unlock+0x20/0x24 drivers/tty/serial/amba-pl011.c:2603 pc : [<81abc670>] lr : [<80aa3828>] psr: 60000113 sp : eb3adeb0 ip : eb3adec0 fp : eb3adebc r10: 82959bc4 r9 : 00000000 r8 : 00000000 r7 : 00000117 r6 : 82959b28 r5 : 00000000 r4 : 00000001 r3 : 000061c0 r2 : 00000000 r1 : 60000113 r0 : 84419c40 Flags: nZCv IRQs on FIQs on Mode SVC_32 ISA ARM Segment user Control: 30c5387d Table: 85d188c0 DAC: fffffffd Call trace: [<81abc648>] (_raw_spin_unlock_irqrestore) from [<80aa3828>] (spin_unlock_irqrestore include/linux/spinlock.h:406 [inline]) [<81abc648>] (_raw_spin_unlock_irqrestore) from [<80aa3828>] (__uart_port_unlock_irqrestore include/linux/serial_core.h:616 [inline]) [<81abc648>] (_raw_spin_unlock_irqrestore) from [<80aa3828>] (pl011_console_device_unlock+0x20/0x24 drivers/tty/serial/amba-pl011.c:2603) [<80aa3808>] (pl011_console_device_unlock) from [<802e5720>] (nbcon_emit_one+0x88/0x100 kernel/printk/nbcon.c:1149) [<802e5698>] (nbcon_emit_one) from [<802e59a0>] (nbcon_kthread_func+0x208/0x2e4 kernel/printk/nbcon.c:1255) r6:82abf0fc r5:82959b28 r4:83ed8000 [<802e5798>] (nbcon_kthread_func) from [<8027f6fc>] (kthread+0x12c/0x280 kernel/kthread.c:463) r10:00000000 r9:82959b28 r8:802e5798 r7:84a3c080 r6:84a3c080 r5:83ed8000 r4:00000001 [<8027f5d0>] (kthread) from [<80200114>] (ret_from_fork+0x14/0x20 arch/arm/kernel/entry-common.S:137) Exception stack(0xeb3adfb0 to 0xeb3adff8) dfa0: 00000000 00000000 00000000 00000000 dfc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 dfe0: 00000000 00000000 00000000 00000000 00000013 00000000 r10:00000000 r9:00000000 r8:00000000 r7:00000000 r6:00000000 r5:8027f5d0 r4:84eda000 INFO: task kworker/0:3:2627 blocked for more than 451 seconds. Not tainted syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/0:3 state:D stack:0 pid:2627 tgid:2627 ppid:2 task_flags:0x4208060 flags:0x00000000 Workqueue: events bpf_prog_free_deferred Call trace: [<81ab1a1c>] (__schedule) from [<81ab2cc8>] (__schedule_loop kernel/sched/core.c:6945 [inline]) [<81ab1a1c>] (__schedule) from [<81ab2cc8>] (schedule+0x2c/0x130 kernel/sched/core.c:6960) r10:ed4ddd84 r9:829174a8 r8:60000013 r7:829174a8 r6:ed4ddd8c r5:845d0c00 r4:845d0c00 [<81ab2c9c>] (schedule) from [<81ab2e50>] (schedule_preempt_disabled+0x18/0x24 kernel/sched/core.c:7017) r5:845d0c00 r4:829174a4 [<81ab2e38>] (schedule_preempt_disabled) from [<81ab64d4>] (__mutex_lock_common kernel/locking/mutex.c:692 [inline]) [<81ab2e38>] (schedule_preempt_disabled) from [<81ab64d4>] (__mutex_lock.constprop.0+0x658/0xf8c kernel/locking/mutex.c:776) [<81ab5e7c>] (__mutex_lock.constprop.0) from [<81ab6edc>] (__mutex_lock_slowpath+0x14/0x18 kernel/locking/mutex.c:1065) r10:8280c9a4 r9:00000001 r8:00000000 r7:ffffffff r6:00000000 r5:ed4dde08 r4:00000000 [<81ab6ec8>] (__mutex_lock_slowpath) from [<81ab6f1c>] (mutex_lock+0x3c/0x40 kernel/locking/mutex.c:290) [<81ab6ee0>] (mutex_lock) from [<804f4260>] (_vm_unmap_aliases+0x68/0x240 mm/vmalloc.c:2944) [<804f41f8>] (_vm_unmap_aliases) from [<804f8048>] (vm_reset_perms mm/vmalloc.c:3375 [inline]) [<804f41f8>] (_vm_unmap_aliases) from [<804f8048>] (vfree+0x16c/0x210 mm/vmalloc.c:3454) r10:83016170 r9:00000001 r8:00000000 r7:ffffffff r6:00000000 r5:87cb7e00 r4:00000000 [<804f7edc>] (vfree) from [<80563e54>] (execmem_free+0x30/0x50 mm/execmem.c:503) r9:83018405 r8:845d0c00 r7:00000000 r6:83018400 r5:00001000 r4:7f290000 [<80563e24>] (execmem_free) from [<803cb1cc>] (bpf_jit_free_exec+0x10/0x14 kernel/bpf/core.c:1052) r5:00001000 r4:ea8bf000 [<803cb1bc>] (bpf_jit_free_exec) from [<803cb5ac>] (bpf_jit_binary_free kernel/bpf/core.c:1098 [inline]) [<803cb1bc>] (bpf_jit_free_exec) from [<803cb5ac>] (bpf_jit_free+0x68/0xe4 kernel/bpf/core.c:1221) [<803cb544>] (bpf_jit_free) from [<803cc6d4>] (bpf_prog_free_deferred+0x140/0x158 kernel/bpf/core.c:2919) r5:864c678c r4:85cc9100 [<803cc594>] (bpf_prog_free_deferred) from [<80275db8>] (process_one_work+0x1b4/0x4f4 kernel/workqueue.c:3257) r7:dddcfb40 r6:83018400 r5:864c678c r4:85cc9100 [<80275c04>] (process_one_work) from [<802764f8>] (process_scheduled_works kernel/workqueue.c:3340 [inline]) [<80275c04>] (process_one_work) from [<802764f8>] (worker_thread+0x1fc/0x3d8 kernel/workqueue.c:3421) r10:61c88647 r9:845d0c00 r8:85cc912c r7:82804d80 r6:dddcfb40 r5:dddcfb60 r4:85cc9100 [<802762fc>] (worker_thread) from [<8027f6fc>] (kthread+0x12c/0x280 kernel/kthread.c:463) r10:00000000 r9:85cc9100 r8:802762fc r7:dfc51e60 r6:85cc9180 r5:845d0c00 r4:00000001 [<8027f5d0>] (kthread) from [<80200114>] (ret_from_fork+0x14/0x20 arch/arm/kernel/entry-common.S:137) Exception stack(0xed4ddfb0 to 0xed4ddff8) dfa0: 00000000 00000000 00000000 00000000 dfc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 dfe0: 00000000 00000000 00000000 00000000 00000013 00000000 r10:00000000 r9:00000000 r8:00000000 r7:00000000 r6:00000000 r5:8027f5d0 r4:86603bc0 INFO: task kworker/0:3:2627 is blocked on a mutex likely owned by task kworker/1:23:6048. task:kworker/1:23 state:R running task stack:0 pid:6048 tgid:6048 ppid:2 task_flags:0x4208060 flags:0x00000000 Workqueue: events bpf_prog_free_deferred Call trace: [<81ab1a1c>] (__schedule) from [<81ab30fc>] (preempt_schedule_irq+0x40/0xa8 kernel/sched/core.c:7190) r10:8280c9f8 r9:83efd400 r8:80200c04 r7:ea6a5d54 r6:ffffffff r5:83efd400 r4:00000000 [<81ab30bc>] (preempt_schedule_irq) from [<80200c24>] (svc_preempt+0x8/0x18) Exception stack(0xea6a5d20 to 0xea6a5d68) 5d20: e41c8000 eb213000 00000001 80239018 df840000 00000001 82ace204 82acd5e0 5d40: df840000 eb213000 8280c9f8 ea6a5d9c ea6a5da0 ea6a5d70 8022fe10 80239030 5d60: 80000113 ffffffff r5:80000113 r4:80239030 [<8022fdac>] (flush_tlb_kernel_range) from [<804f4024>] (__purge_vmap_area_lazy+0x284/0x458 mm/vmalloc.c:2369) r4:82ace224 [<804f3da0>] (__purge_vmap_area_lazy) from [<804f43dc>] (_vm_unmap_aliases+0x1e4/0x240 mm/vmalloc.c:2983) r10:00000000 r9:00000000 r8:00000000 r7:ffffffff r6:ea6a5dc0 r5:ea6a5e08 r4:ea6a5dc0 [<804f41f8>] (_vm_unmap_aliases) from [<804f8048>] (vm_reset_perms mm/vmalloc.c:3375 [inline]) [<804f41f8>] (_vm_unmap_aliases) from [<804f8048>] (vfree+0x16c/0x210 mm/vmalloc.c:3454) r10:83016170 r9:00000001 r8:00000000 r7:ffffffff r6:00000000 r5:86bc5cc0 r4:00000000 [<804f7edc>] (vfree) from [<80563e54>] (execmem_free+0x30/0x50 mm/execmem.c:503) r9:83018605 r8:83efd400 r7:00000000 r6:83018600 r5:00001000 r4:7f28c000 [<80563e24>] (execmem_free) from [<803cb1cc>] (bpf_jit_free_exec+0x10/0x14 kernel/bpf/core.c:1052) r5:00001000 r4:ea859000 [<803cb1bc>] (bpf_jit_free_exec) from [<803cb5ac>] (bpf_jit_binary_free kernel/bpf/core.c:1098 [inline]) [<803cb1bc>] (bpf_jit_free_exec) from [<803cb5ac>] (bpf_jit_free+0x68/0xe4 kernel/bpf/core.c:1221) [<803cb544>] (bpf_jit_free) from [<803cc6d4>] (bpf_prog_free_deferred+0x140/0x158 kernel/bpf/core.c:2919) r5:86755b8c r4:85a2dc00 [<803cc594>] (bpf_prog_free_deferred) from [<80275db8>] (process_one_work+0x1b4/0x4f4 kernel/workqueue.c:3257) r7:ddde3b40 r6:83018600 r5:86755b8c r4:85a2dc00 [<80275c04>] (process_one_work) from [<802764f8>] (process_scheduled_works kernel/workqueue.c:3340 [inline]) [<80275c04>] (process_one_work) from [<802764f8>] (worker_thread+0x1fc/0x3d8 kernel/workqueue.c:3421) r10:61c88647 r9:83efd400 r8:85a2dc2c r7:82804d80 r6:ddde3b40 r5:ddde3b60 r4:85a2dc00 [<802762fc>] (worker_thread) from [<8027f6fc>] (kthread+0x12c/0x280 kernel/kthread.c:463) r10:00000000 r9:85a2dc00 r8:802762fc r7:ea5e9e60 r6:85a2df80 r5:83efd400 r4:00000001 [<8027f5d0>] (kthread) from [<80200114>] (ret_from_fork+0x14/0x20 arch/arm/kernel/entry-common.S:137) Exception stack(0xea6a5fb0 to 0xea6a5ff8) 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 r5:8027f5d0 r4:86769980 INFO: task kworker/0:11:5955 blocked for more than 451 seconds. Not tainted syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/0:11 state:D stack:0 pid:5955 tgid:5955 ppid:2 task_flags:0x4208060 flags:0x00000000 Workqueue: events bpf_prog_free_deferred Call trace: [<81ab1a1c>] (__schedule) from [<81ab2cc8>] (__schedule_loop kernel/sched/core.c:6945 [inline]) [<81ab1a1c>] (__schedule) from [<81ab2cc8>] (schedule+0x2c/0x130 kernel/sched/core.c:6960) r10:e0391d84 r9:829174a8 r8:60000113 r7:829174a8 r6:e0391d8c r5:86832400 r4:86832400 [<81ab2c9c>] (schedule) from [<81ab2e50>] (schedule_preempt_disabled+0x18/0x24 kernel/sched/core.c:7017) r5:86832400 r4:829174a4 [<81ab2e38>] (schedule_preempt_disabled) from [<81ab64d4>] (__mutex_lock_common kernel/locking/mutex.c:692 [inline]) [<81ab2e38>] (schedule_preempt_disabled) from [<81ab64d4>] (__mutex_lock.constprop.0+0x658/0xf8c kernel/locking/mutex.c:776) [<81ab5e7c>] (__mutex_lock.constprop.0) from [<81ab6edc>] (__mutex_lock_slowpath+0x14/0x18 kernel/locking/mutex.c:1065) r10:8280c9a4 r9:00000001 r8:00000000 r7:ffffffff r6:00000000 r5:e0391e08 r4:00000000 [<81ab6ec8>] (__mutex_lock_slowpath) from [<81ab6f1c>] (mutex_lock+0x3c/0x40 kernel/locking/mutex.c:290) [<81ab6ee0>] (mutex_lock) from [<804f4260>] (_vm_unmap_aliases+0x68/0x240 mm/vmalloc.c:2944) [<804f41f8>] (_vm_unmap_aliases) from [<804f8048>] (vm_reset_perms mm/vmalloc.c:3375 [inline]) [<804f41f8>] (_vm_unmap_aliases) from [<804f8048>] (vfree+0x16c/0x210 mm/vmalloc.c:3454) r10:83016170 r9:00000001 r8:00000000 r7:ffffffff r6:00000000 r5:88407480 r4:00000000 [<804f7edc>] (vfree) from [<80563e54>] (execmem_free+0x30/0x50 mm/execmem.c:503) r9:83018405 r8:86832400 r7:00000000 r6:83018400 r5:00001000 r4:7f292000 [<80563e24>] (execmem_free) from [<803cb1cc>] (bpf_jit_free_exec+0x10/0x14 kernel/bpf/core.c:1052) r5:00001000 r4:ea90d000 [<803cb1bc>] (bpf_jit_free_exec) from [<803cb5ac>] (bpf_jit_binary_free kernel/bpf/core.c:1098 [inline]) [<803cb1bc>] (bpf_jit_free_exec) from [<803cb5ac>] (bpf_jit_free+0x68/0xe4 kernel/bpf/core.c:1221) [<803cb544>] (bpf_jit_free) from [<803cc6d4>] (bpf_prog_free_deferred+0x140/0x158 kernel/bpf/core.c:2919) r5:884fa38c r4:86b84100 [<803cc594>] (bpf_prog_free_deferred) from [<80275db8>] (process_one_work+0x1b4/0x4f4 kernel/workqueue.c:3257) r7:dddcfb40 r6:83018400 r5:884fa38c r4:86b84100 [<80275c04>] (process_one_work) from [<802764f8>] (process_scheduled_works kernel/workqueue.c:3340 [inline]) [<80275c04>] (process_one_work) from [<802764f8>] (worker_thread+0x1fc/0x3d8 kernel/workqueue.c:3421) r10:61c88647 r9:86832400 r8:86b8412c r7:82804d80 r6:dddcfb40 r5:dddcfb60 r4:86b84100 [<802762fc>] (worker_thread) from [<8027f6fc>] (kthread+0x12c/0x280 kernel/kthread.c:463) r10:00000000 r9:86b84100 r8:802762fc r7:ed4dde60 r6:86b84f80 r5:86832400 r4:00000001 [<8027f5d0>] (kthread) from [<80200114>] (ret_from_fork+0x14/0x20 arch/arm/kernel/entry-common.S:137) Exception stack(0xe0391fb0 to 0xe0391ff8) 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 r5:8027f5d0 r4:869890c0 INFO: task kworker/0:11:5955 is blocked on a mutex likely owned by task kworker/1:23:6048. task:kworker/1:23 state:R running task stack:0 pid:6048 tgid:6048 ppid:2 task_flags:0x4208060 flags:0x00000000 Workqueue: events bpf_prog_free_deferred Call trace: [<81ab1a1c>] (__schedule) from [<81ab30fc>] (preempt_schedule_irq+0x40/0xa8 kernel/sched/core.c:7190) r10:8280c9f8 r9:83efd400 r8:80200c04 r7:ea6a5d54 r6:ffffffff r5:83efd400 r4:00000000 [<81ab30bc>] (preempt_schedule_irq) from [<80200c24>] (svc_preempt+0x8/0x18) Exception stack(0xea6a5d20 to 0xea6a5d68) 5d20: e41c8000 eb213000 00000001 80239018 df840000 00000001 82ace204 82acd5e0 5d40: df840000 eb213000 8280c9f8 ea6a5d9c ea6a5da0 ea6a5d70 8022fe10 80239030 5d60: 80000113 ffffffff r5:80000113 r4:80239030 [<8022fdac>] (flush_tlb_kernel_range) from [<804f4024>] (__purge_vmap_area_lazy+0x284/0x458 mm/vmalloc.c:2369) r4:82ace224 [<804f3da0>] (__purge_vmap_area_lazy) from [<804f43dc>] (_vm_unmap_aliases+0x1e4/0x240 mm/vmalloc.c:2983) r10:00000000 r9:00000000 r8:00000000 r7:ffffffff r6:ea6a5dc0 r5:ea6a5e08 r4:ea6a5dc0 [<804f41f8>] (_vm_unmap_aliases) from [<804f8048>] (vm_reset_perms mm/vmalloc.c:3375 [inline]) [<804f41f8>] (_vm_unmap_aliases) from [<804f8048>] (vfree+0x16c/0x210 mm/vmalloc.c:3454) r10:83016170 r9:00000001 r8:00000000 r7:ffffffff r6:00000000 r5:86bc5cc0 r4:00000000 [<804f7edc>] (vfree) from [<80563e54>] (execmem_free+0x30/0x50 mm/execmem.c:503) r9:83018605 r8:83efd400 r7:00000000 r6:83018600 r5:00001000 r4:7f28c000 [<80563e24>] (execmem_free) from [<803cb1cc>] (bpf_jit_free_exec+0x10/0x14 kernel/bpf/core.c:1052) r5:00001000 r4:ea859000 [<803cb1bc>] (bpf_jit_free_exec) from [<803cb5ac>] (bpf_jit_binary_free kernel/bpf/core.c:1098 [inline]) [<803cb1bc>] (bpf_jit_free_exec) from [<803cb5ac>] (bpf_jit_free+0x68/0xe4 kernel/bpf/core.c:1221) [<803cb544>] (bpf_jit_free) from [<803cc6d4>] (bpf_prog_free_deferred+0x140/0x158 kernel/bpf/core.c:2919) r5:86755b8c r4:85a2dc00 [<803cc594>] (bpf_prog_free_deferred) from [<80275db8>] (process_one_work+0x1b4/0x4f4 kernel/workqueue.c:3257) r7:ddde3b40 r6:83018600 r5:86755b8c r4:85a2dc00 [<80275c04>] (process_one_work) from [<802764f8>] (process_scheduled_works kernel/workqueue.c:3340 [inline]) [<80275c04>] (process_one_work) from [<802764f8>] (worker_thread+0x1fc/0x3d8 kernel/workqueue.c:3421) r10:61c88647 r9:83efd400 r8:85a2dc2c r7:82804d80 r6:ddde3b40 r5:ddde3b60 r4:85a2dc00 [<802762fc>] (worker_thread) from [<8027f6fc>] (kthread+0x12c/0x280 kernel/kthread.c:463) r10:00000000 r9:85a2dc00 r8:802762fc r7:ea5e9e60 r6:85a2df80 r5:83efd400 r4:00000001 [<8027f5d0>] (kthread) from [<80200114>] (ret_from_fork+0x14/0x20 arch/arm/kernel/entry-common.S:137) Exception stack(0xea6a5fb0 to 0xea6a5ff8) 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 r5:8027f5d0 r4:86769980 INFO: task kworker/0:14:5977 blocked for more than 451 seconds. Not tainted syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/0:14 state:D stack:0 pid:5977 tgid:5977 ppid:2 task_flags:0x4208060 flags:0x00000000 Workqueue: events bpf_prog_free_deferred Call trace: [<81ab1a1c>] (__schedule) from [<81ab2cc8>] (__schedule_loop kernel/sched/core.c:6945 [inline]) [<81ab1a1c>] (__schedule) from [<81ab2cc8>] (schedule+0x2c/0x130 kernel/sched/core.c:6960) r10:e038dd84 r9:829174a8 r8:60000113 r7:829174a8 r6:e038dd8c r5:83f02400 r4:83f02400 [<81ab2c9c>] (schedule) from [<81ab2e50>] (schedule_preempt_disabled+0x18/0x24 kernel/sched/core.c:7017) r5:83f02400 r4:829174a4 [<81ab2e38>] (schedule_preempt_disabled) from [<81ab64d4>] (__mutex_lock_common kernel/locking/mutex.c:692 [inline]) [<81ab2e38>] (schedule_preempt_disabled) from [<81ab64d4>] (__mutex_lock.constprop.0+0x658/0xf8c kernel/locking/mutex.c:776) [<81ab5e7c>] (__mutex_lock.constprop.0) from [<81ab6edc>] (__mutex_lock_slowpath+0x14/0x18 kernel/locking/mutex.c:1065) r10:8280c9a4 r9:00000001 r8:00000000 r7:ffffffff r6:00000000 r5:e038de08 r4:00000000 [<81ab6ec8>] (__mutex_lock_slowpath) from [<81ab6f1c>] (mutex_lock+0x3c/0x40 kernel/locking/mutex.c:290) [<81ab6ee0>] (mutex_lock) from [<804f4260>] (_vm_unmap_aliases+0x68/0x240 mm/vmalloc.c:2944) [<804f41f8>] (_vm_unmap_aliases) from [<804f8048>] (vm_reset_perms mm/vmalloc.c:3375 [inline]) [<804f41f8>] (_vm_unmap_aliases) from [<804f8048>] (vfree+0x16c/0x210 mm/vmalloc.c:3454) r10:83016170 r9:00000001 r8:00000000 r7:ffffffff r6:00000000 r5:87cb7780 r4:00000000 [<804f7edc>] (vfree) from [<80563e54>] (execmem_free+0x30/0x50 mm/execmem.c:503) r9:83018405 r8:83f02400 r7:00000000 r6:83018400 r5:00001000 r4:7f28e000 [<80563e24>] (execmem_free) from [<803cb1cc>] (bpf_jit_free_exec+0x10/0x14 kernel/bpf/core.c:1052) r5:00001000 r4:ea8af000 [<803cb1bc>] (bpf_jit_free_exec) from [<803cb5ac>] (bpf_jit_binary_free kernel/bpf/core.c:1098 [inline]) [<803cb1bc>] (bpf_jit_free_exec) from [<803cb5ac>] (bpf_jit_free+0x68/0xe4 kernel/bpf/core.c:1221) [<803cb544>] (bpf_jit_free) from [<803cc6d4>] (bpf_prog_free_deferred+0x140/0x158 kernel/bpf/core.c:2919) r5:864c6b8c r4:86b84e00 [<803cc594>] (bpf_prog_free_deferred) from [<80275db8>] (process_one_work+0x1b4/0x4f4 kernel/workqueue.c:3257) r7:dddcfb40 r6:83018400 r5:864c6b8c r4:86b84e00 [<80275c04>] (process_one_work) from [<802764f8>] (process_scheduled_works kernel/workqueue.c:3340 [inline]) [<80275c04>] (process_one_work) from [<802764f8>] (worker_thread+0x1fc/0x3d8 kernel/workqueue.c:3421) r10:61c88647 r9:83f02400 r8:86b84e2c r7:82804d80 r6:dddcfb40 r5:dddcfb60 r4:86b84e00 [<802762fc>] (worker_thread) from [<8027f6fc>] (kthread+0x12c/0x280 kernel/kthread.c:463) r10:00000000 r9:86b84e00 r8:802762fc r7:e44a9e60 r6:87d67380 r5:83f02400 r4:00000001 [<8027f5d0>] (kthread) from [<80200114>] (ret_from_fork+0x14/0x20 arch/arm/kernel/entry-common.S:137) Exception stack(0xe038dfb0 to 0xe038dff8) dfa0: 00000000 00000000 00000000 00000000 dfc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 dfe0: 00000000 00000000 00000000 00000000 00000013 00000000 r10:00000000 r9:00000000 r8:00000000 r7:00000000 r6:00000000 r5:8027f5d0 r4:884044c0 INFO: task kworker/0:14:5977 is blocked on a mutex likely owned by task kworker/1:23:6048. task:kworker/1:23 state:R running task stack:0 pid:6048 tgid:6048 ppid:2 task_flags:0x4208060 flags:0x00000000 Workqueue: events bpf_prog_free_deferred Call trace: [<81ab1a1c>] (__schedule) from [<81ab30fc>] (preempt_schedule_irq+0x40/0xa8 kernel/sched/core.c:7190) r10:8280c9f8 r9:83efd400 r8:80200c04 r7:ea6a5d54 r6:ffffffff r5:83efd400 r4:00000000 [<81ab30bc>] (preempt_schedule_irq) from [<80200c24>] (svc_preempt+0x8/0x18) Exception stack(0xea6a5d20 to 0xea6a5d68) 5d20: e6adf000 eb213000 00000001 80239018 df840000 00000001 82ace204 82acd5e0 5d40: df840000 eb213000 8280c9f8 ea6a5d9c ea6a5da0 ea6a5d70 8022fe10 80239030 5d60: 80000113 ffffffff r5:80000113 r4:80239030 [<8022fdac>] (flush_tlb_kernel_range) from [<804f4024>] (__purge_vmap_area_lazy+0x284/0x458 mm/vmalloc.c:2369) r4:82ace224 [<804f3da0>] (__purge_vmap_area_lazy) from [<804f43dc>] (_vm_unmap_aliases+0x1e4/0x240 mm/vmalloc.c:2983) r10:00000000 r9:00000000 r8:00000000 r7:ffffffff r6:ea6a5dc0 r5:ea6a5e08 r4:ea6a5dc0 [<804f41f8>] (_vm_unmap_aliases) from [<804f8048>] (vm_reset_perms mm/vmalloc.c:3375 [inline]) [<804f41f8>] (_vm_unmap_aliases) from [<804f8048>] (vfree+0x16c/0x210 mm/vmalloc.c:3454) r10:83016170 r9:00000001 r8:00000000 r7:ffffffff r6:00000000 r5:86bc5cc0 r4:00000000 [<804f7edc>] (vfree) from [<80563e54>] (execmem_free+0x30/0x50 mm/execmem.c:503) r9:83018605 r8:83efd400 r7:00000000 r6:83018600 r5:00001000 r4:7f28c000 [<80563e24>] (execmem_free) from [<803cb1cc>] (bpf_jit_free_exec+0x10/0x14 kernel/bpf/core.c:1052) r5:00001000 r4:ea859000 [<803cb1bc>] (bpf_jit_free_exec) from [<803cb5ac>] (bpf_jit_binary_free kernel/bpf/core.c:1098 [inline]) [<803cb1bc>] (bpf_jit_free_exec) from [<803cb5ac>] (bpf_jit_free+0x68/0xe4 kernel/bpf/core.c:1221) [<803cb544>] (bpf_jit_free) from [<803cc6d4>] (bpf_prog_free_deferred+0x140/0x158 kernel/bpf/core.c:2919) r5:86755b8c r4:85a2dc00 [<803cc594>] (bpf_prog_free_deferred) from [<80275db8>] (process_one_work+0x1b4/0x4f4 kernel/workqueue.c:3257) r7:ddde3b40 r6:83018600 r5:86755b8c r4:85a2dc00 [<80275c04>] (process_one_work) from [<802764f8>] (process_scheduled_works kernel/workqueue.c:3340 [inline]) [<80275c04>] (process_one_work) from [<802764f8>] (worker_thread+0x1fc/0x3d8 kernel/workqueue.c:3421) r10:61c88647 r9:83efd400 r8:85a2dc2c r7:82804d80 r6:ddde3b40 r5:ddde3b60 r4:85a2dc00 [<802762fc>] (worker_thread) from [<8027f6fc>] (kthread+0x12c/0x280 kernel/kthread.c:463) r10:00000000 r9:85a2dc00 r8:802762fc r7:ea5e9e60 r6:85a2df80 r5:83efd400 r4:00000001 [<8027f5d0>] (kthread) from [<80200114>] (ret_from_fork+0x14/0x20 arch/arm/kernel/entry-common.S:137) Exception stack(0xea6a5fb0 to 0xea6a5ff8) 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 r5:8027f5d0 r4:86769980 Future hung task reports are suppressed, see sysctl kernel.hung_task_warnings NMI backtrace for cpu 1 CPU: 1 UID: 0 PID: 30 Comm: khungtaskd Not tainted syzkaller #0 PREEMPT Hardware name: ARM-Versatile Express Call trace: [<80201a74>] (dump_backtrace) from [<80201b70>] (show_stack+0x18/0x1c arch/arm/kernel/traps.c:257) r7:00000000 r6:000e0113 r5:600e0193 r4:8229579c [<80201b58>] (show_stack) from [<8021edec>] (__dump_stack lib/dump_stack.c:94 [inline]) [<80201b58>] (show_stack) from [<8021edec>] (dump_stack_lvl+0x70/0x7c lib/dump_stack.c:120) [<8021ed7c>] (dump_stack_lvl) from [<8021ee10>] (dump_stack+0x18/0x1c lib/dump_stack.c:129) r5:00000001 r4:00000001 [<8021edf8>] (dump_stack) from [<81a9b500>] (nmi_cpu_backtrace+0x160/0x17c lib/nmi_backtrace.c:113) [<81a9b3a0>] (nmi_cpu_backtrace) from [<81a9b64c>] (nmi_trigger_cpumask_backtrace+0x130/0x1d8 lib/nmi_backtrace.c:62) r7:00000001 r6:8280c6d0 r5:8281af1c r4:ffffffff [<81a9b51c>] (nmi_trigger_cpumask_backtrace) from [<8022f818>] (arch_trigger_cpumask_backtrace+0x18/0x1c arch/arm/kernel/smp.c:852) r9:00007e7c r8:8280c850 r7:000b1d2a r6:00007e7c r5:82ac27e4 r4:00000048 [<8022f800>] (arch_trigger_cpumask_backtrace) from [<81aa315c>] (trigger_all_cpu_backtrace include/linux/nmi.h:160 [inline]) [<8022f800>] (arch_trigger_cpumask_backtrace) from [<81aa315c>] (__sys_info lib/sys_info.c:157 [inline]) [<8022f800>] (arch_trigger_cpumask_backtrace) from [<81aa315c>] (sys_info+0x68/0xa8 lib/sys_info.c:165) [<81aa30f4>] (sys_info) from [<80383788>] (check_hung_uninterruptible_tasks kernel/hung_task.c:346 [inline]) [<81aa30f4>] (sys_info) from [<80383788>] (watchdog+0x464/0x8a0 kernel/hung_task.c:515) r5:82ac27e4 r4:83e85a0c [<80383324>] (watchdog) from [<8027f6fc>] (kthread+0x12c/0x280 kernel/kthread.c:463) r10:00000000 r9:00000000 r8:80383324 r7:8335af80 r6:8335af80 r5:8321d400 r4:00000001 [<8027f5d0>] (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 r5:8027f5d0 r4:832c0e40 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 UID: 0 PID: 7023 Comm: kworker/u8:17 Not tainted syzkaller #0 PREEMPT Hardware name: ARM-Versatile Express Workqueue: events_unbound nsim_dev_trap_report_work PC is at __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:152 [inline] PC is at _raw_spin_unlock_irqrestore+0x28/0x54 kernel/locking/spinlock.c:194 LR is at unlock_hrtimer_base kernel/time/hrtimer.c:1013 [inline] LR is at hrtimer_start_range_ns+0x16c/0x528 kernel/time/hrtimer.c:1325 pc : [<81abc670>] lr : [<8032a5d4>] psr: 60010113 sp : df801de0 ip : df801df0 fp : df801dec r10: dddc7000 r9 : dddc7040 r8 : 58451763 r7 : 00000000 r6 : dddc7000 r5 : dddc7040 r4 : 85c18da8 r3 : 0000b6df r2 : 0000003e r1 : 20010113 r0 : dddc7000 Flags: nZCv IRQs on FIQs on Mode SVC_32 ISA ARM Segment user Control: 30c5387d Table: 84b32200 DAC: fffffffd Call trace: frame pointer underflow [<81abc648>] (_raw_spin_unlock_irqrestore) from [<8032a5d4>] (unlock_hrtimer_base kernel/time/hrtimer.c:1013 [inline]) [<81abc648>] (_raw_spin_unlock_irqrestore) from [<8032a5d4>] (hrtimer_start_range_ns+0x16c/0x528 kernel/time/hrtimer.c:1325) [<8032a468>] (hrtimer_start_range_ns) from [<81653d44>] (qdisc_watchdog_schedule_range_ns net/sched/sch_api.c:653 [inline]) [<8032a468>] (hrtimer_start_range_ns) from [<81653d44>] (qdisc_watchdog_schedule_range_ns+0x8c/0x94 net/sched/sch_api.c:630) r10:b2dbaa20 r9:00000000 r8:00000000 r7:00000000 r6:000006e5 r5:58451763 r4:85c18da8 [<81653cb8>] (qdisc_watchdog_schedule_range_ns) from [<816883a0>] (qdisc_watchdog_schedule_ns include/net/pkt_sched.h:75 [inline]) [<81653cb8>] (qdisc_watchdog_schedule_range_ns) from [<816883a0>] (tbf_dequeue+0x354/0x400 net/sched/sch_tbf.c:317) r9:a5696d43 r8:fffff4e3 r7:0000005e r6:85c18d40 r5:704c8f90 r4:85c18c00 [<8168804c>] (tbf_dequeue) from [<81650468>] (dequeue_skb net/sched/sch_generic.c:297 [inline]) [<8168804c>] (tbf_dequeue) from [<81650468>] (qdisc_restart net/sched/sch_generic.c:402 [inline]) [<8168804c>] (tbf_dequeue) from [<81650468>] (__qdisc_run+0x84/0x7fc net/sched/sch_generic.c:420) r10:85f4c800 r9:00000001 r8:8447f400 r7:00000040 r6:00000000 r5:85c18c00 r4:85c18c00 [<816503e4>] (__qdisc_run) from [<815c27dc>] (qdisc_run include/net/pkt_sched.h:120 [inline]) [<816503e4>] (__qdisc_run) from [<815c27dc>] (qdisc_run include/net/pkt_sched.h:117 [inline]) [<816503e4>] (__qdisc_run) from [<815c27dc>] (net_tx_action+0x128/0x3f4 net/core/dev.c:5781) r10:85f4c800 r9:00000001 r8:85c18c90 r7:dddd1000 r6:00000000 r5:85c18c8c r4:85c18c00 [<815c26b4>] (net_tx_action) from [<8025b65c>] (handle_softirqs+0x140/0x458 kernel/softirq.c:622) r10:85f4c800 r9:82804d80 r8:00000102 r7:00000002 r6:00000004 r5:00000003 r4:82804088 [<8025b51c>] (handle_softirqs) from [<8025bad0>] (__do_softirq kernel/softirq.c:656 [inline]) [<8025b51c>] (handle_softirqs) from [<8025bad0>] (invoke_softirq kernel/softirq.c:496 [inline]) [<8025b51c>] (handle_softirqs) from [<8025bad0>] (__irq_exit_rcu+0x110/0x1d0 kernel/softirq.c:723) r10:868dcd00 r9:85f4c800 r8:00000000 r7:dfbd1de0 r6:82443fe0 r5:8247f114 r4:85f4c800 [<8025b9c0>] (__irq_exit_rcu) from [<8025be48>] (irq_exit+0x10/0x18 kernel/softirq.c:751) r5:8247f114 r4:826c3a9c [<8025be38>] (irq_exit) from [<81aae244>] (generic_handle_arch_irq+0x7c/0x80 kernel/irq/handle.c:295) [<81aae1c8>] (generic_handle_arch_irq) from [<81a7e1d8>] (call_with_stack+0x1c/0x20 arch/arm/lib/call_with_stack.S:40) r9:85f4c800 r8:868dce08 r7:dfbd1e14 r6:ffffffff r5:60010113 r4:8025bc68 [<81a7e1bc>] (call_with_stack) from [<80200bec>] (__irq_svc+0x8c/0xbc arch/arm/kernel/entry-armv.S:228) Exception stack(0xdfbd1de0 to 0xdfbd1e28) 1de0: 00000000 000001fc 00000000 04208060 60010113 00000002 81d98248 00000040 1e00: 868dce08 86d10880 868dcd00 dfbd1e44 df801f08 dfbd1e30 81aaee5c 8025bc68 1e20: 60010113 ffffffff [<8025bc08>] (do_softirq) from [<8025bd38>] (__local_bh_enable_ip+0xcc/0xd0 kernel/softirq.c:450) r5:00000002 r4:85f4c800 [<8025bc6c>] (__local_bh_enable_ip) from [<81abc524>] (__raw_spin_unlock_bh include/linux/spinlock_api_smp.h:167 [inline]) [<8025bc6c>] (__local_bh_enable_ip) from [<81abc524>] (_raw_spin_unlock_bh+0x34/0x38 kernel/locking/spinlock.c:210) r5:86d10c40 r4:86b05480 [<81abc4f0>] (_raw_spin_unlock_bh) from [<80e82574>] (spin_unlock_bh include/linux/spinlock.h:396 [inline]) [<81abc4f0>] (_raw_spin_unlock_bh) from [<80e82574>] (nsim_dev_trap_report drivers/net/netdevsim/dev.c:890 [inline]) [<81abc4f0>] (_raw_spin_unlock_bh) from [<80e82574>] (nsim_dev_trap_report_work+0x2e4/0x410 drivers/net/netdevsim/dev.c:921) [<80e82290>] (nsim_dev_trap_report_work) from [<80275db8>] (process_one_work+0x1b4/0x4f4 kernel/workqueue.c:3257) r10:8300e870 r9:83019805 r8:85f4c800 r7:8300e600 r6:83019800 r5:86d10880 r4:8845b900 [<80275c04>] (process_one_work) from [<802764f8>] (process_scheduled_works kernel/workqueue.c:3340 [inline]) [<80275c04>] (process_one_work) from [<802764f8>] (worker_thread+0x1fc/0x3d8 kernel/workqueue.c:3421) r10:61c88647 r9:85f4c800 r8:8845b92c r7:82804d80 r6:8300e600 r5:8300e620 r4:8845b900 [<802762fc>] (worker_thread) from [<8027f6fc>] (kthread+0x12c/0x280 kernel/kthread.c:463) r10:00000000 r9:8845b900 r8:802762fc r7:dfc31e60 r6:8845ad00 r5:85f4c800 r4:00000001 [<8027f5d0>] (kthread) from [<80200114>] (ret_from_fork+0x14/0x20 arch/arm/kernel/entry-common.S:137) Exception stack(0xdfbd1fb0 to 0xdfbd1ff8) 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 r5:8027f5d0 r4:87f0bc00