INFO: task kworker/0:11:9876 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/0:11 state:D stack:0 pid:9876 tgid:9876 ppid:2 task_flags:0x4208060 flags:0x00000000 Workqueue: events bpf_prog_free_deferred Call trace: [<81aa9bbc>] (__schedule) from [<81aaae4c>] (__schedule_loop kernel/sched/core.c:6949 [inline]) [<81aa9bbc>] (__schedule) from [<81aaae4c>] (schedule+0x2c/0x134 kernel/sched/core.c:6964) r10:ea535d84 r9:00000000 r8:60000013 r7:ea535d8c r6:829172e8 r5:86a68c00 r4:86a68c00 [<81aaae20>] (schedule) from [<81aaafd8>] (schedule_preempt_disabled+0x18/0x24 kernel/sched/core.c:7021) r5:86a68c00 r4:829172e4 [<81aaafc0>] (schedule_preempt_disabled) from [<81aae5a0>] (__mutex_lock_common kernel/locking/mutex.c:692 [inline]) [<81aaafc0>] (schedule_preempt_disabled) from [<81aae5a0>] (__mutex_lock.constprop.0+0x584/0xf10 kernel/locking/mutex.c:776) [<81aae01c>] (__mutex_lock.constprop.0) from [<81aaf000>] (__mutex_lock_slowpath+0x14/0x18 kernel/locking/mutex.c:1065) r10:8280c7e4 r9:00000001 r8:00000000 r7:ffffffff r6:00000000 r5:ea535e08 r4:00000000 [<81aaefec>] (__mutex_lock_slowpath) from [<81aaf040>] (mutex_lock+0x3c/0x40 kernel/locking/mutex.c:290) [<81aaf004>] (mutex_lock) from [<804f0fc8>] (_vm_unmap_aliases+0x5c/0x238 mm/vmalloc.c:2944) [<804f0f6c>] (_vm_unmap_aliases) from [<804f4cac>] (vm_reset_perms mm/vmalloc.c:3375 [inline]) [<804f0f6c>] (_vm_unmap_aliases) from [<804f4cac>] (vfree+0x16c/0x210 mm/vmalloc.c:3454) r10:83018405 r9:00000001 r8:00000000 r7:ffffffff r6:00000000 r5:8593e780 r4:00000000 [<804f4b40>] (vfree) from [<805607dc>] (execmem_free+0x30/0x50 mm/execmem.c:503) r9:83016170 r8:86a68c00 r7:00000000 r6:83018400 r5:00001000 r4:7f25c000 [<805607ac>] (execmem_free) from [<803ca91c>] (bpf_jit_free_exec+0x10/0x14 kernel/bpf/core.c:1068) r5:00001000 r4:ea401000 [<803ca90c>] (bpf_jit_free_exec) from [<803cacfc>] (bpf_jit_binary_free kernel/bpf/core.c:1114 [inline]) [<803ca90c>] (bpf_jit_free_exec) from [<803cacfc>] (bpf_jit_free+0x64/0xe0 kernel/bpf/core.c:1237) [<803cac98>] (bpf_jit_free) from [<803cbc1c>] (bpf_prog_free_deferred+0x140/0x158 kernel/bpf/core.c:2935) r5:85affb94 r4:85cca200 [<803cbadc>] (bpf_prog_free_deferred) from [<80276cec>] (process_one_work+0x1b8/0x4f8 kernel/workqueue.c:3257) r7:dddcfb40 r6:83018400 r5:85affb94 r4:85cca200 [<80276b34>] (process_one_work) from [<8027796c>] (process_scheduled_works kernel/workqueue.c:3340 [inline]) [<80276b34>] (process_one_work) from [<8027796c>] (worker_thread+0x1c4/0x394 kernel/workqueue.c:3421) r10:61c88647 r9:86a68c00 r8:82804d80 r7:85cca22c r6:dddcfb40 r5:dddcfb60 r4:85cca200 [<802777a8>] (worker_thread) from [<8027facc>] (kthread+0x128/0x27c kernel/kthread.c:463) r10:00000000 r9:85cca200 r8:802777a8 r7:ea571e68 r6:85cca780 r5:86a68c00 r4:00000001 [<8027f9a4>] (kthread) from [<80200114>] (ret_from_fork+0x14/0x20 arch/arm/kernel/entry-common.S:137) Exception stack(0xea535fb0 to 0xea535ff8) 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 r5:8027f9a4 r4:86833d40 INFO: task kworker/0:11:9876 is blocked on a mutex likely owned by task kworker/0:1:12012. task:kworker/0:1 state:R running task stack:0 pid:12012 tgid:12012 ppid:2 task_flags:0x4208060 flags:0x00000000 Workqueue: events bpf_prog_free_deferred Call trace: [<81aa9bbc>] (__schedule) from [<81aab284>] (preempt_schedule_irq+0x40/0xa8 kernel/sched/core.c:7194) r10:8280c838 r9:83315400 r8:80200c04 r7:ea409d5c r6:ffffffff r5:83315400 r4:00000000 [<81aab244>] (preempt_schedule_irq) from [<80200c24>] (svc_preempt+0x8/0x18) Exception stack(0xea409d28 to 0xea409d70) 9d20: cd8e9000 eb8b1000 00000001 802394d0 82ace620 82acf264 9d40: 7f25e000 eb8b1000 00000000 00000001 8280c838 ea409d9c eb8b1000 ea409d78 9d60: 8023043c 802394e8 80000113 ffffffff r5:80000113 r4:802394e8 [<802303dc>] (flush_tlb_kernel_range) from [<804f0d7c>] (__purge_vmap_area_lazy+0x260/0x450 mm/vmalloc.c:2369) [<804f0b1c>] (__purge_vmap_area_lazy) from [<804f1154>] (_vm_unmap_aliases+0x1e8/0x238 mm/vmalloc.c:2983) r10:00000000 r9:ea409dc0 r8:00000000 r7:ffffffff r6:00000008 r5:ea409e08 r4:ea409dc0 [<804f0f6c>] (_vm_unmap_aliases) from [<804f4cac>] (vm_reset_perms mm/vmalloc.c:3375 [inline]) [<804f0f6c>] (_vm_unmap_aliases) from [<804f4cac>] (vfree+0x16c/0x210 mm/vmalloc.c:3454) r10:83018405 r9:00000001 r8:00000000 r7:ffffffff r6:00000000 r5:8593e3c0 r4:00000000 [<804f4b40>] (vfree) from [<805607dc>] (execmem_free+0x30/0x50 mm/execmem.c:503) r9:83016170 r8:83315400 r7:00000000 r6:83018400 r5:00001000 r4:7f25a000 [<805607ac>] (execmem_free) from [<803ca91c>] (bpf_jit_free_exec+0x10/0x14 kernel/bpf/core.c:1068) r5:00001000 r4:ea3ff000 [<803ca90c>] (bpf_jit_free_exec) from [<803cacfc>] (bpf_jit_binary_free kernel/bpf/core.c:1114 [inline]) [<803ca90c>] (bpf_jit_free_exec) from [<803cacfc>] (bpf_jit_free+0x64/0xe0 kernel/bpf/core.c:1237) [<803cac98>] (bpf_jit_free) from [<803cbc1c>] (bpf_prog_free_deferred+0x140/0x158 kernel/bpf/core.c:2935) r5:85afc794 r4:8530c480 [<803cbadc>] (bpf_prog_free_deferred) from [<80276cec>] (process_one_work+0x1b8/0x4f8 kernel/workqueue.c:3257) r7:dddcfb40 r6:83018400 r5:85afc794 r4:8530c480 [<80276b34>] (process_one_work) from [<8027796c>] (process_scheduled_works kernel/workqueue.c:3340 [inline]) [<80276b34>] (process_one_work) from [<8027796c>] (worker_thread+0x1c4/0x394 kernel/workqueue.c:3421) r10:61c88647 r9:83315400 r8:82804d80 r7:8530c4ac r6:dddcfb40 r5:dddcfb60 r4:8530c480 [<802777a8>] (worker_thread) from [<8027facc>] (kthread+0x128/0x27c kernel/kthread.c:463) r10:00000000 r9:8530c480 r8:802777a8 r7:ea535e68 r6:8b55d980 r5:83315400 r4:00000001 [<8027f9a4>] (kthread) from [<80200114>] (ret_from_fork+0x14/0x20 arch/arm/kernel/entry-common.S:137) Exception stack(0xea409fb0 to 0xea409ff8) 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 r5:8027f9a4 r4:8b820d00 INFO: task kworker/1:6:12320 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/1:6 state:D stack:0 pid:12320 tgid:12320 ppid:2 task_flags:0x4208060 flags:0x00000000 Workqueue: events bpf_prog_free_deferred Call trace: [<81aa9bbc>] (__schedule) from [<81aaae4c>] (__schedule_loop kernel/sched/core.c:6949 [inline]) [<81aa9bbc>] (__schedule) from [<81aaae4c>] (schedule+0x2c/0x134 kernel/sched/core.c:6964) r10:e42cdd84 r9:00000000 r8:600f0013 r7:e42cdd8c r6:829172e8 r5:85a84800 r4:85a84800 [<81aaae20>] (schedule) from [<81aaafd8>] (schedule_preempt_disabled+0x18/0x24 kernel/sched/core.c:7021) r5:85a84800 r4:829172e4 [<81aaafc0>] (schedule_preempt_disabled) from [<81aae5a0>] (__mutex_lock_common kernel/locking/mutex.c:692 [inline]) [<81aaafc0>] (schedule_preempt_disabled) from [<81aae5a0>] (__mutex_lock.constprop.0+0x584/0xf10 kernel/locking/mutex.c:776) [<81aae01c>] (__mutex_lock.constprop.0) from [<81aaf000>] (__mutex_lock_slowpath+0x14/0x18 kernel/locking/mutex.c:1065) r10:8280c7e4 r9:00000001 r8:00000000 r7:ffffffff r6:00000000 r5:e42cde08 r4:00000000 [<81aaefec>] (__mutex_lock_slowpath) from [<81aaf040>] (mutex_lock+0x3c/0x40 kernel/locking/mutex.c:290) [<81aaf004>] (mutex_lock) from [<804f0fc8>] (_vm_unmap_aliases+0x5c/0x238 mm/vmalloc.c:2944) [<804f0f6c>] (_vm_unmap_aliases) from [<804f4cac>] (vm_reset_perms mm/vmalloc.c:3375 [inline]) [<804f0f6c>] (_vm_unmap_aliases) from [<804f4cac>] (vfree+0x16c/0x210 mm/vmalloc.c:3454) r10:83018605 r9:00000001 r8:00000000 r7:ffffffff r6:00000000 r5:85caa480 r4:00000000 [<804f4b40>] (vfree) from [<805607dc>] (execmem_free+0x30/0x50 mm/execmem.c:503) r9:83016170 r8:85a84800 r7:00000000 r6:83018600 r5:00001000 r4:7f24a000 [<805607ac>] (execmem_free) from [<803ca91c>] (bpf_jit_free_exec+0x10/0x14 kernel/bpf/core.c:1068) r5:00001000 r4:dfbf5000 [<803ca90c>] (bpf_jit_free_exec) from [<803cacfc>] (bpf_jit_binary_free kernel/bpf/core.c:1114 [inline]) [<803ca90c>] (bpf_jit_free_exec) from [<803cacfc>] (bpf_jit_free+0x64/0xe0 kernel/bpf/core.c:1237) [<803cac98>] (bpf_jit_free) from [<803cbc1c>] (bpf_prog_free_deferred+0x140/0x158 kernel/bpf/core.c:2935) r5:85a37b94 r4:8baed580 [<803cbadc>] (bpf_prog_free_deferred) from [<80276cec>] (process_one_work+0x1b8/0x4f8 kernel/workqueue.c:3257) r7:ddde3b40 r6:83018600 r5:85a37b94 r4:8baed580 [<80276b34>] (process_one_work) from [<8027796c>] (process_scheduled_works kernel/workqueue.c:3340 [inline]) [<80276b34>] (process_one_work) from [<8027796c>] (worker_thread+0x1c4/0x394 kernel/workqueue.c:3421) r10:61c88647 r9:85a84800 r8:82804d80 r7:8baed5ac r6:ddde3b40 r5:ddde3b60 r4:8baed580 [<802777a8>] (worker_thread) from [<8027facc>] (kthread+0x128/0x27c kernel/kthread.c:463) r10:00000000 r9:8baed580 r8:802777a8 r7:ea435e68 r6:859cee80 r5:85a84800 r4:00000001 [<8027f9a4>] (kthread) from [<80200114>] (ret_from_fork+0x14/0x20 arch/arm/kernel/entry-common.S:137) Exception stack(0xe42cdfb0 to 0xe42cdff8) 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 r5:8027f9a4 r4:8baeb000 INFO: task kworker/1:6:12320 is blocked on a mutex likely owned by task kworker/0:1:12012. task:kworker/0:1 state:R running task stack:0 pid:12012 tgid:12012 ppid:2 task_flags:0x4208060 flags:0x00000000 Workqueue: events bpf_prog_free_deferred Call trace: [<81aa9bbc>] (__schedule) from [<81aab284>] (preempt_schedule_irq+0x40/0xa8 kernel/sched/core.c:7194) r10:8280c838 r9:83315400 r8:80200c04 r7:ea409d5c r6:ffffffff r5:83315400 r4:00000000 [<81aab244>] (preempt_schedule_irq) from [<80200c24>] (svc_preempt+0x8/0x18) Exception stack(0xea409d28 to 0xea409d70) 9d20: cd8f5000 eb8b1000 00000001 802394d0 82ace620 82acf264 9d40: 7f25e000 eb8b1000 00000000 00000001 8280c838 ea409d9c eb8b1000 ea409d78 9d60: 8023043c 802394e8 80000113 ffffffff r5:80000113 r4:802394e8 [<802303dc>] (flush_tlb_kernel_range) from [<804f0d7c>] (__purge_vmap_area_lazy+0x260/0x450 mm/vmalloc.c:2369) [<804f0b1c>] (__purge_vmap_area_lazy) from [<804f1154>] (_vm_unmap_aliases+0x1e8/0x238 mm/vmalloc.c:2983) r10:00000000 r9:ea409dc0 r8:00000000 r7:ffffffff r6:00000008 r5:ea409e08 r4:ea409dc0 [<804f0f6c>] (_vm_unmap_aliases) from [<804f4cac>] (vm_reset_perms mm/vmalloc.c:3375 [inline]) [<804f0f6c>] (_vm_unmap_aliases) from [<804f4cac>] (vfree+0x16c/0x210 mm/vmalloc.c:3454) r10:83018405 r9:00000001 r8:00000000 r7:ffffffff r6:00000000 r5:8593e3c0 r4:00000000 [<804f4b40>] (vfree) from [<805607dc>] (execmem_free+0x30/0x50 mm/execmem.c:503) r9:83016170 r8:83315400 r7:00000000 r6:83018400 r5:00001000 r4:7f25a000 [<805607ac>] (execmem_free) from [<803ca91c>] (bpf_jit_free_exec+0x10/0x14 kernel/bpf/core.c:1068) r5:00001000 r4:ea3ff000 [<803ca90c>] (bpf_jit_free_exec) from [<803cacfc>] (bpf_jit_binary_free kernel/bpf/core.c:1114 [inline]) [<803ca90c>] (bpf_jit_free_exec) from [<803cacfc>] (bpf_jit_free+0x64/0xe0 kernel/bpf/core.c:1237) [<803cac98>] (bpf_jit_free) from [<803cbc1c>] (bpf_prog_free_deferred+0x140/0x158 kernel/bpf/core.c:2935) r5:85afc794 r4:8530c480 [<803cbadc>] (bpf_prog_free_deferred) from [<80276cec>] (process_one_work+0x1b8/0x4f8 kernel/workqueue.c:3257) r7:dddcfb40 r6:83018400 r5:85afc794 r4:8530c480 [<80276b34>] (process_one_work) from [<8027796c>] (process_scheduled_works kernel/workqueue.c:3340 [inline]) [<80276b34>] (process_one_work) from [<8027796c>] (worker_thread+0x1c4/0x394 kernel/workqueue.c:3421) r10:61c88647 r9:83315400 r8:82804d80 r7:8530c4ac r6:dddcfb40 r5:dddcfb60 r4:8530c480 [<802777a8>] (worker_thread) from [<8027facc>] (kthread+0x128/0x27c kernel/kthread.c:463) r10:00000000 r9:8530c480 r8:802777a8 r7:ea535e68 r6:8b55d980 r5:83315400 r4:00000001 [<8027f9a4>] (kthread) from [<80200114>] (ret_from_fork+0x14/0x20 arch/arm/kernel/entry-common.S:137) Exception stack(0xea409fb0 to 0xea409ff8) 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 r5:8027f9a4 r4:8b820d00 INFO: task kworker/1:7:12325 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/1:7 state:D stack:0 pid:12325 tgid:12325 ppid:2 task_flags:0x4208060 flags:0x00000000 Workqueue: events bpf_prog_free_deferred Call trace: [<81aa9bbc>] (__schedule) from [<81aaae4c>] (__schedule_loop kernel/sched/core.c:6949 [inline]) [<81aa9bbc>] (__schedule) from [<81aaae4c>] (schedule+0x2c/0x134 kernel/sched/core.c:6964) r10:e42d5d84 r9:00000000 r8:60070113 r7:e42d5d8c r6:829172e8 r5:85a86c00 r4:85a86c00 [<81aaae20>] (schedule) from [<81aaafd8>] (schedule_preempt_disabled+0x18/0x24 kernel/sched/core.c:7021) r5:85a86c00 r4:829172e4 [<81aaafc0>] (schedule_preempt_disabled) from [<81aae5a0>] (__mutex_lock_common kernel/locking/mutex.c:692 [inline]) [<81aaafc0>] (schedule_preempt_disabled) from [<81aae5a0>] (__mutex_lock.constprop.0+0x584/0xf10 kernel/locking/mutex.c:776) [<81aae01c>] (__mutex_lock.constprop.0) from [<81aaf000>] (__mutex_lock_slowpath+0x14/0x18 kernel/locking/mutex.c:1065) r10:8280c7e4 r9:00000001 r8:00000000 r7:ffffffff r6:00000000 r5:e42d5e08 r4:00000000 [<81aaefec>] (__mutex_lock_slowpath) from [<81aaf040>] (mutex_lock+0x3c/0x40 kernel/locking/mutex.c:290) [<81aaf004>] (mutex_lock) from [<804f0fc8>] (_vm_unmap_aliases+0x5c/0x238 mm/vmalloc.c:2944) [<804f0f6c>] (_vm_unmap_aliases) from [<804f4cac>] (vm_reset_perms mm/vmalloc.c:3375 [inline]) [<804f0f6c>] (_vm_unmap_aliases) from [<804f4cac>] (vfree+0x16c/0x210 mm/vmalloc.c:3454) r10:83018605 r9:00000001 r8:00000000 r7:ffffffff r6:00000000 r5:85caa7c0 r4:00000000 [<804f4b40>] (vfree) from [<805607dc>] (execmem_free+0x30/0x50 mm/execmem.c:503) r9:83016170 r8:85a86c00 r7:00000000 r6:83018600 r5:00001000 r4:7f035000 [<805607ac>] (execmem_free) from [<803ca91c>] (bpf_jit_free_exec+0x10/0x14 kernel/bpf/core.c:1068) r5:00001000 r4:dfbf3000 [<803ca90c>] (bpf_jit_free_exec) from [<803cacfc>] (bpf_jit_binary_free kernel/bpf/core.c:1114 [inline]) [<803ca90c>] (bpf_jit_free_exec) from [<803cacfc>] (bpf_jit_free+0x64/0xe0 kernel/bpf/core.c:1237) [<803cac98>] (bpf_jit_free) from [<803cbc1c>] (bpf_prog_free_deferred+0x140/0x158 kernel/bpf/core.c:2935) r5:85a37f94 r4:8baed280 [<803cbadc>] (bpf_prog_free_deferred) from [<80276cec>] (process_one_work+0x1b8/0x4f8 kernel/workqueue.c:3257) r7:ddde3b40 r6:83018600 r5:85a37f94 r4:8baed280 [<80276b34>] (process_one_work) from [<8027796c>] (process_scheduled_works kernel/workqueue.c:3340 [inline]) [<80276b34>] (process_one_work) from [<8027796c>] (worker_thread+0x1c4/0x394 kernel/workqueue.c:3421) r10:61c88647 r9:85a86c00 r8:82804d80 r7:8baed2ac r6:ddde3b40 r5:ddde3b60 r4:8baed280 [<802777a8>] (worker_thread) from [<8027facc>] (kthread+0x128/0x27c kernel/kthread.c:463) r10:00000000 r9:8baed280 r8:802777a8 r7:ea7dde68 r6:859ce880 r5:85a86c00 r4:00000001 [<8027f9a4>] (kthread) from [<80200114>] (ret_from_fork+0x14/0x20 arch/arm/kernel/entry-common.S:137) Exception stack(0xe42d5fb0 to 0xe42d5ff8) 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 r5:8027f9a4 r4:8baeb900 INFO: task kworker/1:7:12325 is blocked on a mutex likely owned by task kworker/0:1:12012. task:kworker/0:1 state:R running task stack:0 pid:12012 tgid:12012 ppid:2 task_flags:0x4208060 flags:0x00000000 Workqueue: events bpf_prog_free_deferred Call trace: [<81aa9bbc>] (__schedule) from [<81aab284>] (preempt_schedule_irq+0x40/0xa8 kernel/sched/core.c:7194) r10:8280c838 r9:83315400 r8:80200c04 r7:ea409d5c r6:ffffffff r5:83315400 r4:00000000 [<81aab244>] (preempt_schedule_irq) from [<80200c24>] (svc_preempt+0x8/0x18) Exception stack(0xea409d28 to 0xea409d70) 9d20: cd8f6000 eb8b1000 00000001 802394d0 82ace620 82acf264 9d40: 7f25e000 eb8b1000 00000000 00000001 8280c838 ea409d9c eb8b1000 ea409d78 9d60: 8023043c 802394e8 80000113 ffffffff r5:80000113 r4:802394e8 [<802303dc>] (flush_tlb_kernel_range) from [<804f0d7c>] (__purge_vmap_area_lazy+0x260/0x450 mm/vmalloc.c:2369) [<804f0b1c>] (__purge_vmap_area_lazy) from [<804f1154>] (_vm_unmap_aliases+0x1e8/0x238 mm/vmalloc.c:2983) r10:00000000 r9:ea409dc0 r8:00000000 r7:ffffffff r6:00000008 r5:ea409e08 r4:ea409dc0 [<804f0f6c>] (_vm_unmap_aliases) from [<804f4cac>] (vm_reset_perms mm/vmalloc.c:3375 [inline]) [<804f0f6c>] (_vm_unmap_aliases) from [<804f4cac>] (vfree+0x16c/0x210 mm/vmalloc.c:3454) r10:83018405 r9:00000001 r8:00000000 r7:ffffffff r6:00000000 r5:8593e3c0 r4:00000000 [<804f4b40>] (vfree) from [<805607dc>] (execmem_free+0x30/0x50 mm/execmem.c:503) r9:83016170 r8:83315400 r7:00000000 r6:83018400 r5:00001000 r4:7f25a000 [<805607ac>] (execmem_free) from [<803ca91c>] (bpf_jit_free_exec+0x10/0x14 kernel/bpf/core.c:1068) r5:00001000 r4:ea3ff000 [<803ca90c>] (bpf_jit_free_exec) from [<803cacfc>] (bpf_jit_binary_free kernel/bpf/core.c:1114 [inline]) [<803ca90c>] (bpf_jit_free_exec) from [<803cacfc>] (bpf_jit_free+0x64/0xe0 kernel/bpf/core.c:1237) [<803cac98>] (bpf_jit_free) from [<803cbc1c>] (bpf_prog_free_deferred+0x140/0x158 kernel/bpf/core.c:2935) r5:85afc794 r4:8530c480 [<803cbadc>] (bpf_prog_free_deferred) from [<80276cec>] (process_one_work+0x1b8/0x4f8 kernel/workqueue.c:3257) r7:dddcfb40 r6:83018400 r5:85afc794 r4:8530c480 [<80276b34>] (process_one_work) from [<8027796c>] (process_scheduled_works kernel/workqueue.c:3340 [inline]) [<80276b34>] (process_one_work) from [<8027796c>] (worker_thread+0x1c4/0x394 kernel/workqueue.c:3421) r10:61c88647 r9:83315400 r8:82804d80 r7:8530c4ac r6:dddcfb40 r5:dddcfb60 r4:8530c480 [<802777a8>] (worker_thread) from [<8027facc>] (kthread+0x128/0x27c kernel/kthread.c:463) r10:00000000 r9:8530c480 r8:802777a8 r7:ea535e68 r6:8b55d980 r5:83315400 r4:00000001 [<8027f9a4>] (kthread) from [<80200114>] (ret_from_fork+0x14/0x20 arch/arm/kernel/entry-common.S:137) Exception stack(0xea409fb0 to 0xea409ff8) 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 r5:8027f9a4 r4:8b820d00 NMI backtrace for cpu 1 CPU: 1 UID: 0 PID: 30 Comm: khungtaskd Tainted: G L syzkaller #0 PREEMPT Tainted: [L]=SOFTLOCKUP Hardware name: ARM-Versatile Express Call trace: [<80201a40>] (dump_backtrace) from [<80201b34>] (show_stack+0x18/0x1c arch/arm/kernel/traps.c:257) r7:60000193 r6:60000193 r5:822a266c r4:00000000 [<80201b1c>] (show_stack) from [<8021ed6c>] (__dump_stack lib/dump_stack.c:94 [inline]) [<80201b1c>] (show_stack) from [<8021ed6c>] (dump_stack_lvl+0x5c/0x70 lib/dump_stack.c:120) [<8021ed10>] (dump_stack_lvl) from [<8021ed98>] (dump_stack+0x18/0x1c lib/dump_stack.c:129) r7:00000000 r6:00000113 r5:00000001 r4:00000001 [<8021ed80>] (dump_stack) from [<81a937fc>] (nmi_cpu_backtrace+0x150/0x170 lib/nmi_backtrace.c:113) [<81a936ac>] (nmi_cpu_backtrace) from [<81a9394c>] (nmi_trigger_cpumask_backtrace+0x130/0x1d8 lib/nmi_backtrace.c:62) r7:00000001 r6:8280c510 r5:8281ad9c r4:ffffffff [<81a9381c>] (nmi_trigger_cpumask_backtrace) from [<8022fe60>] (arch_trigger_cpumask_backtrace+0x18/0x1c arch/arm/kernel/smp.c:852) r9:82ac382c r8:8280c690 r7:82804d80 r6:85280204 r5:00007eb8 r4:00000048 [<8022fe48>] (arch_trigger_cpumask_backtrace) from [<81a9b430>] (trigger_all_cpu_backtrace include/linux/nmi.h:161 [inline]) [<8022fe48>] (arch_trigger_cpumask_backtrace) from [<81a9b430>] (__sys_info lib/sys_info.c:157 [inline]) [<8022fe48>] (arch_trigger_cpumask_backtrace) from [<81a9b430>] (sys_info+0x68/0xa8 lib/sys_info.c:165) [<81a9b3c8>] (sys_info) from [<80382f6c>] (check_hung_uninterruptible_tasks kernel/hung_task.c:346 [inline]) [<81a9b3c8>] (sys_info) from [<80382f6c>] (watchdog+0x458/0x888 kernel/hung_task.c:515) r5:00007eb8 r4:8394bc0c [<80382b14>] (watchdog) from [<8027facc>] (kthread+0x128/0x27c kernel/kthread.c:463) r10:00000000 r9:00000000 r8:80382b14 r7:8335af80 r6:8335af80 r5:8321d400 r4:00000001 [<8027f9a4>] (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 r5:8027f9a4 r4:832c0e40 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 UID: 0 PID: 14062 Comm: syz.2.1811 Tainted: G L syzkaller #0 PREEMPT Tainted: [L]=SOFTLOCKUP Hardware name: ARM-Versatile Express PC is at hrtimer_start_range_ns+0x0/0x530 kernel/time/hrtimer.c:1306 LR is at qdisc_watchdog_schedule_range_ns net/sched/sch_api.c:653 [inline] LR is at qdisc_watchdog_schedule_range_ns+0x8c/0x94 net/sched/sch_api.c:630 pc : [<80329d54>] lr : [<81649af4>] psr: 60000113 sp : df801e28 ip : df801e28 fp : df801e5c r10: aba69c40 r9 : 00000000 r8 : 00000000 r7 : 00000000 r6 : 000001fc r5 : aba61c1f r4 : 850743a8 r3 : 000001fc r2 : aba61c1f r1 : 00000002 r0 : 850743a8 Flags: nZCv IRQs on FIQs on Mode SVC_32 ISA ARM Segment user Control: 30c5387d Table: 85213f80 DAC: fffffffd Call trace: frame pointer underflow [<81649a68>] (qdisc_watchdog_schedule_range_ns) from [<8167e378>] (qdisc_watchdog_schedule_ns include/net/pkt_sched.h:75 [inline]) [<81649a68>] (qdisc_watchdog_schedule_range_ns) from [<8167e378>] (tbf_dequeue+0x2a0/0x400 net/sched/sch_tbf.c:317) r9:f0394721 r8:00000000 r7:00000036 r6:85074340 r5:00008021 r4:85074200 [<8167e0d8>] (tbf_dequeue) from [<81646220>] (dequeue_skb net/sched/sch_generic.c:297 [inline]) [<8167e0d8>] (tbf_dequeue) from [<81646220>] (qdisc_restart net/sched/sch_generic.c:402 [inline]) [<8167e0d8>] (tbf_dequeue) from [<81646220>] (__qdisc_run+0x90/0x804 net/sched/sch_generic.c:420) r10:00000040 r9:85074290 r8:85074254 r7:00000001 r6:00000000 r5:dddd1000 r4:85074200 [<81646190>] (__qdisc_run) from [<815ba334>] (qdisc_run include/net/pkt_sched.h:120 [inline]) [<81646190>] (__qdisc_run) from [<815ba334>] (qdisc_run include/net/pkt_sched.h:117 [inline]) [<81646190>] (__qdisc_run) from [<815ba334>] (net_tx_action+0x13c/0x40c net/core/dev.c:5796) r10:00000004 r9:85074290 r8:8507428c r7:00000001 r6:00000000 r5:dddd1000 r4:85074200 [<815ba1f8>] (net_tx_action) from [<8025b428>] (handle_softirqs+0x15c/0x468 kernel/softirq.c:622) r10:00000004 r9:85edbc00 r8:00000100 r7:00000008 r6:00000002 r5:00000003 r4:82804088 [<8025b2cc>] (handle_softirqs) from [<8025b8d0>] (__do_softirq kernel/softirq.c:656 [inline]) [<8025b2cc>] (handle_softirqs) from [<8025b8d0>] (invoke_softirq kernel/softirq.c:496 [inline]) [<8025b2cc>] (handle_softirqs) from [<8025b8d0>] (__irq_exit_rcu+0x150/0x1d0 kernel/softirq.c:723) r10:82a7d6b8 r9:85edbc00 r8:00000000 r7:e026de58 r6:8244eb14 r5:82489680 r4:85edbc00 [<8025b780>] (__irq_exit_rcu) from [<8025bc08>] (irq_exit+0x10/0x18 kernel/softirq.c:751) r5:82489680 r4:826c3a9c [<8025bbf8>] (irq_exit) from [<81aa644c>] (generic_handle_arch_irq+0x7c/0x80 kernel/irq/handle.c:295) [<81aa63d0>] (generic_handle_arch_irq) from [<81a75774>] (call_with_stack+0x1c/0x20 arch/arm/lib/call_with_stack.S:40) r9:85edbc00 r8:8293d278 r7:e026de8c r6:ffffffff r5:80000013 r4:805baf48 [<81a75758>] (call_with_stack) from [<80200bec>] (__irq_svc+0x8c/0xbc arch/arm/kernel/entry-armv.S:228) Exception stack(0xe026de58 to 0xe026dea0) de40: 8293d62c 00400000 de60: 0000000a 00002000 86884400 828215f0 86884400 868846f0 8293d278 828215f0 de80: 82a7d6b8 e026dec4 00000000 e026dea8 8077b660 805baf48 80000013 ffffffff [<8077b618>] (mq_init_ns) from [<8077bbb8>] (create_ipc_ns ipc/namespace.c:73 [inline]) [<8077b618>] (mq_init_ns) from [<8077bbb8>] (copy_ipcs+0x180/0x2f0 ipc/namespace.c:116) r7:868846f0 r6:86884400 r5:828215f0 r4:82822864 [<8077ba38>] (copy_ipcs) from [<802823a4>] (create_new_namespaces+0xb4/0x350 kernel/nsproxy.c:110) r8:28000600 r7:00000000 r6:85edbc00 r5:851f9438 r4:844aea00 [<802822f0>] (create_new_namespaces) from [<80282844>] (unshare_nsproxy_namespaces+0x78/0x98 kernel/nsproxy.c:226) r10:00000151 r9:85edbc00 r8:8b4ea600 r7:828215f0 r6:e026df60 r5:8b6e62c0 r4:28000600 [<802827cc>] (unshare_nsproxy_namespaces) from [<80251394>] (ksys_unshare+0xf0/0x3e4 kernel/fork.c:3171) r7:00000000 r6:85edbc00 r5:8b6e62c0 r4:28000600 [<802512a4>] (ksys_unshare) from [<80251698>] (__do_sys_unshare kernel/fork.c:3242 [inline]) [<802512a4>] (ksys_unshare) from [<80251698>] (sys_unshare+0x10/0x14 kernel/fork.c:3240) r10:00000151 r9:85edbc00 r8:8020029c r7:00000151 r6:00346308 r5:00000000 r4:00000000 [<80251688>] (sys_unshare) from [<80200060>] (ret_fast_syscall+0x0/0x1c arch/arm/mm/proc-v7.S:67) Exception stack(0xe026dfa8 to 0xe026dff0) dfa0: 00000000 00000000 28000600 00000000 00000000 00000000 dfc0: 00000000 00000000 00346308 00000151 003462d8 00000000 003d0f00 76fea0dc dfe0: 76fe9e88 76fe9e78 00018734 0012fc20