INFO: task kworker/0:3:2885 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:2885 tgid:2885 ppid:2 task_flags:0x4208060 flags:0x00400000 Workqueue: events bpf_prog_free_deferred Call trace: [<81a6483c>] (__schedule) from [<81a657d0>] (__schedule_loop kernel/sched/core.c:7011 [inline]) [<81a6483c>] (__schedule) from [<81a657d0>] (schedule+0x2c/0x130 kernel/sched/core.c:7026) r10:eb859d84 r9:00000002 r8:60070013 r7:829171a0 r6:eb859d8c r5:833a6c00 r4:833a6c00 [<81a657a4>] (schedule) from [<81a65bb8>] (schedule_preempt_disabled+0x18/0x24 kernel/sched/core.c:7083) r5:833a6c00 r4:8291719c [<81a65ba0>] (schedule_preempt_disabled) from [<81a68768>] (__mutex_lock_common kernel/locking/mutex.c:676 [inline]) [<81a65ba0>] (schedule_preempt_disabled) from [<81a68768>] (__mutex_lock.constprop.0+0x350/0xa24 kernel/locking/mutex.c:760) [<81a68418>] (__mutex_lock.constprop.0) from [<81a68f10>] (__mutex_lock_slowpath+0x14/0x18 kernel/locking/mutex.c:1049) r10:8280c960 r9:00000001 r8:00000000 r7:ffffffff r6:00000000 r5:eb859e08 r4:00000000 [<81a68efc>] (__mutex_lock_slowpath) from [<81a68f50>] (mutex_lock+0x3c/0x40 kernel/locking/mutex.c:274) [<81a68f14>] (mutex_lock) from [<804ea37c>] (_vm_unmap_aliases+0x68/0x240 mm/vmalloc.c:2918) [<804ea314>] (_vm_unmap_aliases) from [<804ee15c>] (vm_reset_perms mm/vmalloc.c:3349 [inline]) [<804ea314>] (_vm_unmap_aliases) from [<804ee15c>] (vfree+0x16c/0x210 mm/vmalloc.c:3428) r10:83016170 r9:00000001 r8:00000000 r7:ffffffff r6:00000000 r5:85d41900 r4:00000000 [<804edff0>] (vfree) from [<80559088>] (execmem_free+0x30/0x50 mm/execmem.c:503) r9:83018405 r8:833a6c00 r7:00000000 r6:83018400 r5:00001000 r4:7f0a7000 [<80559058>] (execmem_free) from [<803c5fb0>] (bpf_jit_free_exec+0x10/0x14 kernel/bpf/core.c:1052) r5:00001000 r4:dfa1b000 [<803c5fa0>] (bpf_jit_free_exec) from [<803c6390>] (bpf_jit_binary_free kernel/bpf/core.c:1098 [inline]) [<803c5fa0>] (bpf_jit_free_exec) from [<803c6390>] (bpf_jit_free+0x68/0xe4 kernel/bpf/core.c:1221) [<803c6328>] (bpf_jit_free) from [<803c7438>] (bpf_prog_free_deferred+0x140/0x158 kernel/bpf/core.c:2898) r5:8611138c r4:846d0c00 [<803c72f8>] (bpf_prog_free_deferred) from [<802785a0>] (process_one_work+0x1b4/0x4f4 kernel/workqueue.c:3263) r7:dddcfd80 r6:83018400 r5:8611138c r4:846d0c00 [<802783ec>] (process_one_work) from [<802791e8>] (process_scheduled_works kernel/workqueue.c:3346 [inline]) [<802783ec>] (process_one_work) from [<802791e8>] (worker_thread+0x1fc/0x3d8 kernel/workqueue.c:3427) r10:61c88647 r9:833a6c00 r8:846d0c2c r7:82804d40 r6:dddcfd80 r5:dddcfda0 r4:846d0c00 [<80278fec>] (worker_thread) from [<8028020c>] (kthread+0x12c/0x280 kernel/kthread.c:463) r10:00000000 r9:846d0c00 r8:80278fec r7:df909e60 r6:846f1580 r5:833a6c00 r4:00000001 [<802800e0>] (kthread) from [<80200114>] (ret_from_fork+0x14/0x20 arch/arm/kernel/entry-common.S:137) Exception stack(0xeb859fb0 to 0xeb859ff8) 9fa0: 00000000 00000000 00000000 00000000 9fc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 9fe0: 00000000 00000000 00000000 00000000 00000013 00000000 r10:00000000 r9:00000000 r8:00000000 r7:00000000 r6:00000000 r5:802800e0 r4:84707440 INFO: task kworker/0:3:2885 is blocked on a mutex likely owned by task kworker/0:30:9271. task:kworker/0:30 state:R running task stack:0 pid:9271 tgid:9271 ppid:2 task_flags:0x4208060 flags:0x00400000 Workqueue: events bpf_prog_free_deferred Call trace: [<81a6483c>] (__schedule) from [<81a65c04>] (preempt_schedule_irq+0x40/0xa8 kernel/sched/core.c:7256) r10:8280c9b4 r9:84ea6000 r8:80200c04 r7:e4269d54 r6:ffffffff r5:84ea6000 r4:00000000 [<81a65bc4>] (preempt_schedule_irq) from [<80200c24>] (svc_preempt+0x8/0x18) Exception stack(0xe4269d20 to 0xe4269d68) 9d20: ad573000 ea857000 00000001 80239bf8 7f045000 00000001 82acb1c4 82aca5a0 9d40: 7f045000 ea857000 8280c9b4 e4269d9c e4269da0 e4269d70 80230af0 80239c10 9d60: 80000113 ffffffff r5:80000113 r4:80239c10 [<80230a8c>] (flush_tlb_kernel_range) from [<804ea140>] (__purge_vmap_area_lazy+0x284/0x458 mm/vmalloc.c:2342) r4:82acb1e4 [<804e9ebc>] (__purge_vmap_area_lazy) from [<804ea4f8>] (_vm_unmap_aliases+0x1e4/0x240 mm/vmalloc.c:2957) r10:00000000 r9:00000000 r8:00000000 r7:ffffffff r6:e4269dc0 r5:e4269e08 r4:e4269dc0 [<804ea314>] (_vm_unmap_aliases) from [<804ee15c>] (vm_reset_perms mm/vmalloc.c:3349 [inline]) [<804ea314>] (_vm_unmap_aliases) from [<804ee15c>] (vfree+0x16c/0x210 mm/vmalloc.c:3428) r10:83016170 r9:00000001 r8:00000000 r7:ffffffff r6:00000000 r5:85d00400 r4:00000000 [<804edff0>] (vfree) from [<80559088>] (execmem_free+0x30/0x50 mm/execmem.c:503) r9:83018405 r8:84ea6000 r7:00000000 r6:83018400 r5:00001000 r4:7f045000 [<80559058>] (execmem_free) from [<803c5fb0>] (bpf_jit_free_exec+0x10/0x14 kernel/bpf/core.c:1052) r5:00001000 r4:df8df000 [<803c5fa0>] (bpf_jit_free_exec) from [<803c6390>] (bpf_jit_binary_free kernel/bpf/core.c:1098 [inline]) [<803c5fa0>] (bpf_jit_free_exec) from [<803c6390>] (bpf_jit_free+0x68/0xe4 kernel/bpf/core.c:1221) [<803c6328>] (bpf_jit_free) from [<803c7438>] (bpf_prog_free_deferred+0x140/0x158 kernel/bpf/core.c:2898) r5:851aa38c r4:85d3f200 [<803c72f8>] (bpf_prog_free_deferred) from [<802785a0>] (process_one_work+0x1b4/0x4f4 kernel/workqueue.c:3263) r7:dddcfd80 r6:83018400 r5:851aa38c r4:85d3f200 [<802783ec>] (process_one_work) from [<802791e8>] (process_scheduled_works kernel/workqueue.c:3346 [inline]) [<802783ec>] (process_one_work) from [<802791e8>] (worker_thread+0x1fc/0x3d8 kernel/workqueue.c:3427) r10:61c88647 r9:84ea6000 r8:85d3f22c r7:82804d40 r6:dddcfd80 r5:dddcfda0 r4:85d3f200 [<80278fec>] (worker_thread) from [<8028020c>] (kthread+0x12c/0x280 kernel/kthread.c:463) r10:00000000 r9:85d3f200 r8:80278fec r7:ea4c1e60 r6:85d3fb00 r5:84ea6000 r4:00000001 [<802800e0>] (kthread) from [<80200114>] (ret_from_fork+0x14/0x20 arch/arm/kernel/entry-common.S:137) Exception stack(0xe4269fb0 to 0xe4269ff8) 9fa0: 00000000 00000000 00000000 00000000 9fc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 9fe0: 00000000 00000000 00000000 00000000 00000013 00000000 r10:00000000 r9:00000000 r8:00000000 r7:00000000 r6:00000000 r5:802800e0 r4:84ed1740 INFO: task kworker/1:25:8260 blocked for more than 430 seconds. Not tainted syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/1:25 state:D stack:0 pid:8260 tgid:8260 ppid:2 task_flags:0x4208060 flags:0x00400000 Workqueue: events bpf_prog_free_deferred Call trace: [<81a6483c>] (__schedule) from [<81a657d0>] (__schedule_loop kernel/sched/core.c:7011 [inline]) [<81a6483c>] (__schedule) from [<81a657d0>] (schedule+0x2c/0x130 kernel/sched/core.c:7026) r10:ea359d84 r9:00000002 r8:60000113 r7:829171a0 r6:ea359d8c r5:8414bc00 r4:8414bc00 [<81a657a4>] (schedule) from [<81a65bb8>] (schedule_preempt_disabled+0x18/0x24 kernel/sched/core.c:7083) r5:8414bc00 r4:8291719c [<81a65ba0>] (schedule_preempt_disabled) from [<81a68768>] (__mutex_lock_common kernel/locking/mutex.c:676 [inline]) [<81a65ba0>] (schedule_preempt_disabled) from [<81a68768>] (__mutex_lock.constprop.0+0x350/0xa24 kernel/locking/mutex.c:760) [<81a68418>] (__mutex_lock.constprop.0) from [<81a68f10>] (__mutex_lock_slowpath+0x14/0x18 kernel/locking/mutex.c:1049) r10:8280c960 r9:00000001 r8:00000000 r7:ffffffff r6:00000000 r5:ea359e08 r4:00000000 [<81a68efc>] (__mutex_lock_slowpath) from [<81a68f50>] (mutex_lock+0x3c/0x40 kernel/locking/mutex.c:274) [<81a68f14>] (mutex_lock) from [<804ea37c>] (_vm_unmap_aliases+0x68/0x240 mm/vmalloc.c:2918) [<804ea314>] (_vm_unmap_aliases) from [<804ee15c>] (vm_reset_perms mm/vmalloc.c:3349 [inline]) [<804ea314>] (_vm_unmap_aliases) from [<804ee15c>] (vfree+0x16c/0x210 mm/vmalloc.c:3428) r10:83016170 r9:00000001 r8:00000000 r7:ffffffff r6:00000000 r5:85d004c0 r4:00000000 [<804edff0>] (vfree) from [<80559088>] (execmem_free+0x30/0x50 mm/execmem.c:503) r9:83018605 r8:8414bc00 r7:00000000 r6:83018600 r5:00001000 r4:7f07f000 [<80559058>] (execmem_free) from [<803c5fb0>] (bpf_jit_free_exec+0x10/0x14 kernel/bpf/core.c:1052) r5:00001000 r4:df93b000 [<803c5fa0>] (bpf_jit_free_exec) from [<803c6390>] (bpf_jit_binary_free kernel/bpf/core.c:1098 [inline]) [<803c5fa0>] (bpf_jit_free_exec) from [<803c6390>] (bpf_jit_free+0x68/0xe4 kernel/bpf/core.c:1221) [<803c6328>] (bpf_jit_free) from [<803c7438>] (bpf_prog_free_deferred+0x140/0x158 kernel/bpf/core.c:2898) r5:8600bf8c r4:84827300 [<803c72f8>] (bpf_prog_free_deferred) from [<802785a0>] (process_one_work+0x1b4/0x4f4 kernel/workqueue.c:3263) r7:ddde3d80 r6:83018600 r5:8600bf8c r4:84827300 [<802783ec>] (process_one_work) from [<802791e8>] (process_scheduled_works kernel/workqueue.c:3346 [inline]) [<802783ec>] (process_one_work) from [<802791e8>] (worker_thread+0x1fc/0x3d8 kernel/workqueue.c:3427) r10:61c88647 r9:8414bc00 r8:8482732c r7:82804d40 r6:ddde3d80 r5:ddde3da0 r4:84827300 [<80278fec>] (worker_thread) from [<8028020c>] (kthread+0x12c/0x280 kernel/kthread.c:463) r10:00000000 r9:84827300 r8:80278fec r7:df879e60 r6:84827c00 r5:8414bc00 r4:00000001 [<802800e0>] (kthread) from [<80200114>] (ret_from_fork+0x14/0x20 arch/arm/kernel/entry-common.S:137) Exception stack(0xea359fb0 to 0xea359ff8) 9fa0: 00000000 00000000 00000000 00000000 9fc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 9fe0: 00000000 00000000 00000000 00000000 00000013 00000000 r10:00000000 r9:00000000 r8:00000000 r7:00000000 r6:00000000 r5:802800e0 r4:8605cd80 INFO: task kworker/1:25:8260 is blocked on a mutex likely owned by task kworker/0:30:9271. task:kworker/0:30 state:R running task stack:0 pid:9271 tgid:9271 ppid:2 task_flags:0x4208060 flags:0x00400000 Workqueue: events bpf_prog_free_deferred Call trace: [<81a6483c>] (__schedule) from [<81a65c04>] (preempt_schedule_irq+0x40/0xa8 kernel/sched/core.c:7256) r10:8280c9b4 r9:84ea6000 r8:80200c04 r7:e4269d54 r6:ffffffff r5:84ea6000 r4:00000000 [<81a65bc4>] (preempt_schedule_irq) from [<80200c24>] (svc_preempt+0x8/0x18) Exception stack(0xe4269d20 to 0xe4269d68) 9d20: adc6f000 ea857000 00000001 80239bf8 7f045000 00000001 82acb1c4 82aca5a0 9d40: 7f045000 ea857000 8280c9b4 e4269d9c e4269da0 e4269d70 80230af0 80239c10 9d60: 80000113 ffffffff r5:80000113 r4:80239c10 [<80230a8c>] (flush_tlb_kernel_range) from [<804ea140>] (__purge_vmap_area_lazy+0x284/0x458 mm/vmalloc.c:2342) r4:82acb1e4 [<804e9ebc>] (__purge_vmap_area_lazy) from [<804ea4f8>] (_vm_unmap_aliases+0x1e4/0x240 mm/vmalloc.c:2957) r10:00000000 r9:00000000 r8:00000000 r7:ffffffff r6:e4269dc0 r5:e4269e08 r4:e4269dc0 [<804ea314>] (_vm_unmap_aliases) from [<804ee15c>] (vm_reset_perms mm/vmalloc.c:3349 [inline]) [<804ea314>] (_vm_unmap_aliases) from [<804ee15c>] (vfree+0x16c/0x210 mm/vmalloc.c:3428) r10:83016170 r9:00000001 r8:00000000 r7:ffffffff r6:00000000 r5:85d00400 r4:00000000 [<804edff0>] (vfree) from [<80559088>] (execmem_free+0x30/0x50 mm/execmem.c:503) r9:83018405 r8:84ea6000 r7:00000000 r6:83018400 r5:00001000 r4:7f045000 [<80559058>] (execmem_free) from [<803c5fb0>] (bpf_jit_free_exec+0x10/0x14 kernel/bpf/core.c:1052) r5:00001000 r4:df8df000 [<803c5fa0>] (bpf_jit_free_exec) from [<803c6390>] (bpf_jit_binary_free kernel/bpf/core.c:1098 [inline]) [<803c5fa0>] (bpf_jit_free_exec) from [<803c6390>] (bpf_jit_free+0x68/0xe4 kernel/bpf/core.c:1221) [<803c6328>] (bpf_jit_free) from [<803c7438>] (bpf_prog_free_deferred+0x140/0x158 kernel/bpf/core.c:2898) r5:851aa38c r4:85d3f200 [<803c72f8>] (bpf_prog_free_deferred) from [<802785a0>] (process_one_work+0x1b4/0x4f4 kernel/workqueue.c:3263) r7:dddcfd80 r6:83018400 r5:851aa38c r4:85d3f200 [<802783ec>] (process_one_work) from [<802791e8>] (process_scheduled_works kernel/workqueue.c:3346 [inline]) [<802783ec>] (process_one_work) from [<802791e8>] (worker_thread+0x1fc/0x3d8 kernel/workqueue.c:3427) r10:61c88647 r9:84ea6000 r8:85d3f22c r7:82804d40 r6:dddcfd80 r5:dddcfda0 r4:85d3f200 [<80278fec>] (worker_thread) from [<8028020c>] (kthread+0x12c/0x280 kernel/kthread.c:463) r10:00000000 r9:85d3f200 r8:80278fec r7:ea4c1e60 r6:85d3fb00 r5:84ea6000 r4:00000001 [<802800e0>] (kthread) from [<80200114>] (ret_from_fork+0x14/0x20 arch/arm/kernel/entry-common.S:137) Exception stack(0xe4269fb0 to 0xe4269ff8) 9fa0: 00000000 00000000 00000000 00000000 9fc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 9fe0: 00000000 00000000 00000000 00000000 00000013 00000000 r10:00000000 r9:00000000 r8:00000000 r7:00000000 r6:00000000 r5:802800e0 r4:84ed1740 INFO: task kworker/0:31:9272 blocked for more than 430 seconds. Not tainted syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/0:31 state:D stack:0 pid:9272 tgid:9272 ppid:2 task_flags:0x4208060 flags:0x00400000 Workqueue: events bpf_prog_free_deferred Call trace: [<81a6483c>] (__schedule) from [<81a657d0>] (__schedule_loop kernel/sched/core.c:7011 [inline]) [<81a6483c>] (__schedule) from [<81a657d0>] (schedule+0x2c/0x130 kernel/sched/core.c:7026) r10:e82f5d84 r9:00000002 r8:60000013 r7:829171a0 r6:e82f5d8c r5:8339ec00 r4:8339ec00 [<81a657a4>] (schedule) from [<81a65bb8>] (schedule_preempt_disabled+0x18/0x24 kernel/sched/core.c:7083) r5:8339ec00 r4:8291719c [<81a65ba0>] (schedule_preempt_disabled) from [<81a68768>] (__mutex_lock_common kernel/locking/mutex.c:676 [inline]) [<81a65ba0>] (schedule_preempt_disabled) from [<81a68768>] (__mutex_lock.constprop.0+0x350/0xa24 kernel/locking/mutex.c:760) [<81a68418>] (__mutex_lock.constprop.0) from [<81a68f10>] (__mutex_lock_slowpath+0x14/0x18 kernel/locking/mutex.c:1049) r10:8280c960 r9:00000001 r8:00000000 r7:ffffffff r6:00000000 r5:e82f5e08 r4:00000000 [<81a68efc>] (__mutex_lock_slowpath) from [<81a68f50>] (mutex_lock+0x3c/0x40 kernel/locking/mutex.c:274) [<81a68f14>] (mutex_lock) from [<804ea37c>] (_vm_unmap_aliases+0x68/0x240 mm/vmalloc.c:2918) [<804ea314>] (_vm_unmap_aliases) from [<804ee15c>] (vm_reset_perms mm/vmalloc.c:3349 [inline]) [<804ea314>] (_vm_unmap_aliases) from [<804ee15c>] (vfree+0x16c/0x210 mm/vmalloc.c:3428) r10:83016170 r9:00000001 r8:00000000 r7:ffffffff r6:00000000 r5:848767c0 r4:00000000 [<804edff0>] (vfree) from [<80559088>] (execmem_free+0x30/0x50 mm/execmem.c:503) r9:83018405 r8:8339ec00 r7:00000000 r6:83018400 r5:00001000 r4:7f0a9000 [<80559058>] (execmem_free) from [<803c5fb0>] (bpf_jit_free_exec+0x10/0x14 kernel/bpf/core.c:1052) r5:00001000 r4:dfa1d000 [<803c5fa0>] (bpf_jit_free_exec) from [<803c6390>] (bpf_jit_binary_free kernel/bpf/core.c:1098 [inline]) [<803c5fa0>] (bpf_jit_free_exec) from [<803c6390>] (bpf_jit_free+0x68/0xe4 kernel/bpf/core.c:1221) [<803c6328>] (bpf_jit_free) from [<803c7438>] (bpf_prog_free_deferred+0x140/0x158 kernel/bpf/core.c:2898) r5:8322f78c r4:85d3fc80 [<803c72f8>] (bpf_prog_free_deferred) from [<802785a0>] (process_one_work+0x1b4/0x4f4 kernel/workqueue.c:3263) r7:dddcfd80 r6:83018400 r5:8322f78c r4:85d3fc80 [<802783ec>] (process_one_work) from [<802791e8>] (process_scheduled_works kernel/workqueue.c:3346 [inline]) [<802783ec>] (process_one_work) from [<802791e8>] (worker_thread+0x1fc/0x3d8 kernel/workqueue.c:3427) r10:61c88647 r9:8339ec00 r8:85d3fcac r7:82804d40 r6:dddcfd80 r5:dddcfda0 r4:85d3fc80 [<80278fec>] (worker_thread) from [<8028020c>] (kthread+0x12c/0x280 kernel/kthread.c:463) r10:00000000 r9:85d3fc80 r8:80278fec r7:e4269e60 r6:85d3fd00 r5:8339ec00 r4:00000001 [<802800e0>] (kthread) from [<80200114>] (ret_from_fork+0x14/0x20 arch/arm/kernel/entry-common.S:137) Exception stack(0xe82f5fb0 to 0xe82f5ff8) 5fa0: 00000000 00000000 00000000 00000000 5fc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 5fe0: 00000000 00000000 00000000 00000000 00000013 00000000 r10:00000000 r9:00000000 r8:00000000 r7:00000000 r6:00000000 r5:802800e0 r4:84ed1740 INFO: task kworker/0:31:9272 is blocked on a mutex likely owned by task kworker/0:30:9271. task:kworker/0:30 state:R running task stack:0 pid:9271 tgid:9271 ppid:2 task_flags:0x4208060 flags:0x00400000 Workqueue: events bpf_prog_free_deferred Call trace: [<81a6483c>] (__schedule) from [<81a65c04>] (preempt_schedule_irq+0x40/0xa8 kernel/sched/core.c:7256) r10:8280c9b4 r9:84ea6000 r8:80200c04 r7:e4269d54 r6:ffffffff r5:84ea6000 r4:00000000 [<81a65bc4>] (preempt_schedule_irq) from [<80200c24>] (svc_preempt+0x8/0x18) Exception stack(0xe4269d20 to 0xe4269d68) 9d20: adf6f000 ea857000 00000001 80239bf8 7f045000 00000001 82acb1c4 82aca5a0 9d40: 7f045000 ea857000 8280c9b4 e4269d9c e4269da0 e4269d70 80230af0 80239c10 9d60: 80000113 ffffffff r5:80000113 r4:80239c10 [<80230a8c>] (flush_tlb_kernel_range) from [<804ea140>] (__purge_vmap_area_lazy+0x284/0x458 mm/vmalloc.c:2342) r4:82acb1e4 [<804e9ebc>] (__purge_vmap_area_lazy) from [<804ea4f8>] (_vm_unmap_aliases+0x1e4/0x240 mm/vmalloc.c:2957) r10:00000000 r9:00000000 r8:00000000 r7:ffffffff r6:e4269dc0 r5:e4269e08 r4:e4269dc0 [<804ea314>] (_vm_unmap_aliases) from [<804ee15c>] (vm_reset_perms mm/vmalloc.c:3349 [inline]) [<804ea314>] (_vm_unmap_aliases) from [<804ee15c>] (vfree+0x16c/0x210 mm/vmalloc.c:3428) r10:83016170 r9:00000001 r8:00000000 r7:ffffffff r6:00000000 r5:85d00400 r4:00000000 [<804edff0>] (vfree) from [<80559088>] (execmem_free+0x30/0x50 mm/execmem.c:503) r9:83018405 r8:84ea6000 r7:00000000 r6:83018400 r5:00001000 r4:7f045000 [<80559058>] (execmem_free) from [<803c5fb0>] (bpf_jit_free_exec+0x10/0x14 kernel/bpf/core.c:1052) r5:00001000 r4:df8df000 [<803c5fa0>] (bpf_jit_free_exec) from [<803c6390>] (bpf_jit_binary_free kernel/bpf/core.c:1098 [inline]) [<803c5fa0>] (bpf_jit_free_exec) from [<803c6390>] (bpf_jit_free+0x68/0xe4 kernel/bpf/core.c:1221) [<803c6328>] (bpf_jit_free) from [<803c7438>] (bpf_prog_free_deferred+0x140/0x158 kernel/bpf/core.c:2898) r5:851aa38c r4:85d3f200 [<803c72f8>] (bpf_prog_free_deferred) from [<802785a0>] (process_one_work+0x1b4/0x4f4 kernel/workqueue.c:3263) r7:dddcfd80 r6:83018400 r5:851aa38c r4:85d3f200 [<802783ec>] (process_one_work) from [<802791e8>] (process_scheduled_works kernel/workqueue.c:3346 [inline]) [<802783ec>] (process_one_work) from [<802791e8>] (worker_thread+0x1fc/0x3d8 kernel/workqueue.c:3427) r10:61c88647 r9:84ea6000 r8:85d3f22c r7:82804d40 r6:dddcfd80 r5:dddcfda0 r4:85d3f200 [<80278fec>] (worker_thread) from [<8028020c>] (kthread+0x12c/0x280 kernel/kthread.c:463) r10:00000000 r9:85d3f200 r8:80278fec r7:ea4c1e60 r6:85d3fb00 r5:84ea6000 r4:00000001 [<802800e0>] (kthread) from [<80200114>] (ret_from_fork+0x14/0x20 arch/arm/kernel/entry-common.S:137) Exception stack(0xe4269fb0 to 0xe4269ff8) 9fa0: 00000000 00000000 00000000 00000000 9fc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 9fe0: 00000000 00000000 00000000 00000000 00000013 00000000 r10:00000000 r9:00000000 r8:00000000 r7:00000000 r6:00000000 r5:802800e0 r4:84ed1740 NMI backtrace for cpu 0 CPU: 0 UID: 0 PID: 30 Comm: khungtaskd Not tainted syzkaller #0 PREEMPT Hardware name: ARM-Versatile Express Call trace: [<80201a24>] (dump_backtrace) from [<80201b20>] (show_stack+0x18/0x1c arch/arm/kernel/traps.c:257) r7:00000000 r6:00000113 r5:60000193 r4:8225282c [<80201b08>] (show_stack) from [<8021f8f8>] (__dump_stack lib/dump_stack.c:94 [inline]) [<80201b08>] (show_stack) from [<8021f8f8>] (dump_stack_lvl+0x70/0x7c lib/dump_stack.c:120) [<8021f888>] (dump_stack_lvl) from [<8021f91c>] (dump_stack+0x18/0x1c lib/dump_stack.c:129) r5:00000000 r4:00000001 [<8021f904>] (dump_stack) from [<81a4e454>] (nmi_cpu_backtrace+0x160/0x17c lib/nmi_backtrace.c:113) [<81a4e2f4>] (nmi_cpu_backtrace) from [<81a4e5a0>] (nmi_trigger_cpumask_backtrace+0x130/0x1d8 lib/nmi_backtrace.c:62) r7:00000000 r6:8280c690 r5:8281ae34 r4:ffffffff [<81a4e470>] (nmi_trigger_cpumask_backtrace) from [<802304fc>] (arch_trigger_cpumask_backtrace+0x18/0x1c arch/arm/kernel/smp.c:852) r9:8281ba28 r8:8280c810 r7:0001e5c3 r6:00007e78 r5:82abf7d4 r4:86035a0c [<802304e4>] (arch_trigger_cpumask_backtrace) from [<8037faf8>] (trigger_all_cpu_backtrace include/linux/nmi.h:160 [inline]) [<802304e4>] (arch_trigger_cpumask_backtrace) from [<8037faf8>] (check_hung_uninterruptible_tasks kernel/hung_task.c:332 [inline]) [<802304e4>] (arch_trigger_cpumask_backtrace) from [<8037faf8>] (watchdog+0x5d0/0x850 kernel/hung_task.c:495) [<8037f528>] (watchdog) from [<8028020c>] (kthread+0x12c/0x280 kernel/kthread.c:463) r10:00000000 r9:00000000 r8:8037f528 r7:832d4080 r6:832d4080 r5:83329800 r4:00000001 [<802800e0>] (kthread) from [<80200114>] (ret_from_fork+0x14/0x20 arch/arm/kernel/entry-common.S:137) Exception stack(0xdf8d9fb0 to 0xdf8d9ff8) 9fa0: 00000000 00000000 00000000 00000000 9fc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 9fe0: 00000000 00000000 00000000 00000000 00000013 00000000 r10:00000000 r9:00000000 r8:00000000 r7:00000000 r6:00000000 r5:802800e0 r4:838c72c0 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 UID: 0 PID: 2819 Comm: pr/ttyAMA-1 Not tainted syzkaller #0 PREEMPT Hardware name: ARM-Versatile Express PC is at __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 : [<81a6e6a4>] lr : [<80a8f60c>] psr: 600e0113 sp : eafc9eb0 ip : eafc9ec0 fp : eafc9ebc r10: 82959594 r9 : 00000001 r8 : 00000000 r7 : 00000117 r6 : 829594f8 r5 : 00000000 r4 : 00000001 r3 : 00000b55 r2 : 00000000 r1 : 600e0113 r0 : 8420f440 Flags: nZCv IRQs on FIQs on Mode SVC_32 ISA ARM Segment none Control: 30c5387d Table: 86065800 DAC: 00000000 Call trace: [<81a6e67c>] (_raw_spin_unlock_irqrestore) from [<80a8f60c>] (spin_unlock_irqrestore include/linux/spinlock.h:406 [inline]) [<81a6e67c>] (_raw_spin_unlock_irqrestore) from [<80a8f60c>] (__uart_port_unlock_irqrestore include/linux/serial_core.h:616 [inline]) [<81a6e67c>] (_raw_spin_unlock_irqrestore) from [<80a8f60c>] (pl011_console_device_unlock+0x20/0x24 drivers/tty/serial/amba-pl011.c:2603) [<80a8f5ec>] (pl011_console_device_unlock) from [<802e3750>] (nbcon_emit_one+0x88/0x100 kernel/printk/nbcon.c:1142) [<802e36c8>] (nbcon_emit_one) from [<802e3970>] (nbcon_kthread_func+0x1a8/0x2a4 kernel/printk/nbcon.c:1229) r6:8280c690 r5:84b4e000 r4:829594f8 [<802e37c8>] (nbcon_kthread_func) from [<8028020c>] (kthread+0x12c/0x280 kernel/kthread.c:463) r10:00000000 r9:829594f8 r8:802e37c8 r7:84b82180 r6:84b82180 r5:84b4e000 r4:00000001 [<802800e0>] (kthread) from [<80200114>] (ret_from_fork+0x14/0x20 arch/arm/kernel/entry-common.S:137) Exception stack(0xeafc9fb0 to 0xeafc9ff8) 9fa0: 00000000 00000000 00000000 00000000 9fc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 9fe0: 00000000 00000000 00000000 00000000 00000013 00000000 r10:00000000 r9:00000000 r8:00000000 r7:00000000 r6:00000000 r5:802800e0 r4:83ee33c0