INFO: task kworker/1:0:22 blocked for more than 450 seconds. Not tainted 6.8.0-rc2-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/1:0 state:D stack:0 pid:22 tgid:22 ppid:2 flags:0x00000000 Workqueue: events bpf_prog_free_deferred Backtrace: [<81857a24>] (__schedule) from [<8185865c>] (__schedule_loop kernel/sched/core.c:6802 [inline]) [<81857a24>] (__schedule) from [<8185865c>] (schedule+0x2c/0xb8 kernel/sched/core.c:6817) r10:82c16205 r9:00000000 r8:8270dd78 r7:00000002 r6:df875dac r5:82e79800 r4:82e79800 [<81858630>] (schedule) from [<81858c28>] (schedule_preempt_disabled+0x18/0x24 kernel/sched/core.c:6874) r5:82e79800 r4:8270dd74 [<81858c10>] (schedule_preempt_disabled) from [<8185b510>] (__mutex_lock_common kernel/locking/mutex.c:684 [inline]) [<81858c10>] (schedule_preempt_disabled) from [<8185b510>] (__mutex_lock.constprop.0+0x2e8/0xae0 kernel/locking/mutex.c:752) [<8185b228>] (__mutex_lock.constprop.0) from [<8185bddc>] (__mutex_lock_slowpath+0x14/0x18 kernel/locking/mutex.c:1040) r10:82c16205 r9:df875e38 r8:00000000 r7:ffffffff r6:00000000 r5:848f9600 r4:00000000 [<8185bdc8>] (__mutex_lock_slowpath) from [<8185be1c>] (mutex_lock+0x3c/0x40 kernel/locking/mutex.c:286) [<8185bde0>] (mutex_lock) from [<8048df04>] (_vm_unmap_aliases+0x60/0x2e4 mm/vmalloc.c:2267) [<8048dea4>] (_vm_unmap_aliases) from [<80491aa4>] (vm_reset_perms mm/vmalloc.c:2753 [inline]) [<8048dea4>] (_vm_unmap_aliases) from [<80491aa4>] (vfree+0x170/0x1e0 mm/vmalloc.c:2832) r10:82c16205 r9:00000001 r8:00000000 r7:ffffffff r6:00000000 r5:848f9600 r4:00000000 [<80491934>] (vfree) from [<802ea464>] (module_memfree+0x30/0x50 kernel/module/main.c:1189) r9:82e79800 r8:00000080 r7:00000000 r6:82c16200 r5:00001000 r4:7f04f000 [<802ea434>] (module_memfree) from [<80388aec>] (bpf_jit_free_exec+0x10/0x14 kernel/bpf/core.c:1048) r5:00001000 r4:dfa89000 [<80388adc>] (bpf_jit_free_exec) from [<80388cac>] (bpf_jit_binary_free kernel/bpf/core.c:1094 [inline]) [<80388adc>] (bpf_jit_free_exec) from [<80388cac>] (bpf_jit_free+0x68/0xe4 kernel/bpf/core.c:1218) [<80388c44>] (bpf_jit_free) from [<80389d8c>] (bpf_prog_free_deferred+0x14c/0x164 kernel/bpf/core.c:2772) r5:848b8b50 r4:848b8800 [<80389c40>] (bpf_prog_free_deferred) from [<80267064>] (process_one_work+0x19c/0x4a4 kernel/workqueue.c:2633) r7:ddde4280 r6:82c16200 r5:848b8b50 r4:82c0be00 [<80266ec8>] (process_one_work) from [<802675ac>] (process_scheduled_works kernel/workqueue.c:2706 [inline]) [<80266ec8>] (process_one_work) from [<802675ac>] (worker_thread+0x240/0x48c kernel/workqueue.c:2787) r10:61c88647 r9:82e79800 r8:ddde42a0 r7:82604d40 r6:ddde4280 r5:82c0be2c r4:82c0be00 [<8026736c>] (worker_thread) from [<8026e888>] (kthread+0x104/0x134 kernel/kthread.c:388) r10:00000000 r9:df819d68 r8:82cc76c0 r7:82c0be00 r6:8026736c r5:82e79800 r4:82cc7480 [<8026e784>] (kthread) from [<80200104>] (ret_from_fork+0x14/0x30 arch/arm/kernel/entry-common.S:134) Exception stack(0xdf875fb0 to 0xdf875ff8) 5fa0: 00000000 00000000 00000000 00000000 5fc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 5fe0: 00000000 00000000 00000000 00000000 00000013 00000000 r9:00000000 r8:00000000 r7:00000000 r6:00000000 r5:8026e784 r4:82cc7480 INFO: task kworker/1:3:120 blocked for more than 450 seconds. Not tainted 6.8.0-rc2-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/1:3 state:D stack:0 pid:120 tgid:120 ppid:2 flags:0x00000000 Workqueue: events bpf_prog_free_deferred Backtrace: [<81857a24>] (__schedule) from [<8185865c>] (__schedule_loop kernel/sched/core.c:6802 [inline]) [<81857a24>] (__schedule) from [<8185865c>] (schedule+0x2c/0xb8 kernel/sched/core.c:6817) r10:82c16205 r9:00000000 r8:8270dd78 r7:00000002 r6:dfa11dac r5:836cb000 r4:836cb000 [<81858630>] (schedule) from [<81858c28>] (schedule_preempt_disabled+0x18/0x24 kernel/sched/core.c:6874) r5:836cb000 r4:8270dd74 [<81858c10>] (schedule_preempt_disabled) from [<8185b510>] (__mutex_lock_common kernel/locking/mutex.c:684 [inline]) [<81858c10>] (schedule_preempt_disabled) from [<8185b510>] (__mutex_lock.constprop.0+0x2e8/0xae0 kernel/locking/mutex.c:752) [<8185b228>] (__mutex_lock.constprop.0) from [<8185bddc>] (__mutex_lock_slowpath+0x14/0x18 kernel/locking/mutex.c:1040) r10:82c16205 r9:dfa11e38 r8:00000000 r7:ffffffff r6:00000000 r5:848f9a40 r4:00000000 [<8185bdc8>] (__mutex_lock_slowpath) from [<8185be1c>] (mutex_lock+0x3c/0x40 kernel/locking/mutex.c:286) [<8185bde0>] (mutex_lock) from [<8048df04>] (_vm_unmap_aliases+0x60/0x2e4 mm/vmalloc.c:2267) [<8048dea4>] (_vm_unmap_aliases) from [<80491aa4>] (vm_reset_perms mm/vmalloc.c:2753 [inline]) [<8048dea4>] (_vm_unmap_aliases) from [<80491aa4>] (vfree+0x170/0x1e0 mm/vmalloc.c:2832) r10:82c16205 r9:00000001 r8:00000000 r7:ffffffff r6:00000000 r5:848f9a40 r4:00000000 [<80491934>] (vfree) from [<802ea464>] (module_memfree+0x30/0x50 kernel/module/main.c:1189) r9:836cb000 r8:00000080 r7:00000000 r6:82c16200 r5:00001000 r4:7f057000 [<802ea434>] (module_memfree) from [<80388aec>] (bpf_jit_free_exec+0x10/0x14 kernel/bpf/core.c:1048) r5:00001000 r4:dfaf7000 [<80388adc>] (bpf_jit_free_exec) from [<80388cac>] (bpf_jit_binary_free kernel/bpf/core.c:1094 [inline]) [<80388adc>] (bpf_jit_free_exec) from [<80388cac>] (bpf_jit_free+0x68/0xe4 kernel/bpf/core.c:1218) [<80388c44>] (bpf_jit_free) from [<80389d8c>] (bpf_prog_free_deferred+0x14c/0x164 kernel/bpf/core.c:2772) r5:848b9b50 r4:848b9800 [<80389c40>] (bpf_prog_free_deferred) from [<80267064>] (process_one_work+0x19c/0x4a4 kernel/workqueue.c:2633) r7:ddde4280 r6:82c16200 r5:848b9b50 r4:8369d200 [<80266ec8>] (process_one_work) from [<802675ac>] (process_scheduled_works kernel/workqueue.c:2706 [inline]) [<80266ec8>] (process_one_work) from [<802675ac>] (worker_thread+0x240/0x48c kernel/workqueue.c:2787) r10:61c88647 r9:836cb000 r8:ddde42a0 r7:82604d40 r6:ddde4280 r5:8369d22c r4:8369d200 [<8026736c>] (worker_thread) from [<8026e888>] (kthread+0x104/0x134 kernel/kthread.c:388) r10:00000000 r9:df9b5e90 r8:8369e800 r7:8369d200 r6:8026736c r5:836cb000 r4:8369e480 [<8026e784>] (kthread) from [<80200104>] (ret_from_fork+0x14/0x30 arch/arm/kernel/entry-common.S:134) Exception stack(0xdfa11fb0 to 0xdfa11ff8) 1fa0: 00000000 00000000 00000000 00000000 1fc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 1fe0: 00000000 00000000 00000000 00000000 00000013 00000000 r9:00000000 r8:00000000 r7:00000000 r6:00000000 r5:8026e784 r4:8369e480 INFO: task kworker/1:1:2993 blocked for more than 450 seconds. Not tainted 6.8.0-rc2-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/1:1 state:D stack:0 pid:2993 tgid:2993 ppid:2 flags:0x00000000 Workqueue: events bpf_prog_free_deferred Backtrace: [<81857a24>] (__schedule) from [<8185865c>] (__schedule_loop kernel/sched/core.c:6802 [inline]) [<81857a24>] (__schedule) from [<8185865c>] (schedule+0x2c/0xb8 kernel/sched/core.c:6817) r10:82c16205 r9:00000000 r8:8270dd78 r7:00000002 r6:df97ddac r5:83679800 r4:83679800 [<81858630>] (schedule) from [<81858c28>] (schedule_preempt_disabled+0x18/0x24 kernel/sched/core.c:6874) r5:83679800 r4:8270dd74 [<81858c10>] (schedule_preempt_disabled) from [<8185b510>] (__mutex_lock_common kernel/locking/mutex.c:684 [inline]) [<81858c10>] (schedule_preempt_disabled) from [<8185b510>] (__mutex_lock.constprop.0+0x2e8/0xae0 kernel/locking/mutex.c:752) [<8185b228>] (__mutex_lock.constprop.0) from [<8185bddc>] (__mutex_lock_slowpath+0x14/0x18 kernel/locking/mutex.c:1040) r10:82c16205 r9:df97de38 r8:00000000 r7:ffffffff r6:00000000 r5:848f9400 r4:00000000 [<8185bdc8>] (__mutex_lock_slowpath) from [<8185be1c>] (mutex_lock+0x3c/0x40 kernel/locking/mutex.c:286) [<8185bde0>] (mutex_lock) from [<8048df04>] (_vm_unmap_aliases+0x60/0x2e4 mm/vmalloc.c:2267) [<8048dea4>] (_vm_unmap_aliases) from [<80491aa4>] (vm_reset_perms mm/vmalloc.c:2753 [inline]) [<8048dea4>] (_vm_unmap_aliases) from [<80491aa4>] (vfree+0x170/0x1e0 mm/vmalloc.c:2832) r10:82c16205 r9:00000001 r8:00000000 r7:ffffffff r6:00000000 r5:848f9400 r4:00000000 [<80491934>] (vfree) from [<802ea464>] (module_memfree+0x30/0x50 kernel/module/main.c:1189) r9:83679800 r8:00000080 r7:00000000 r6:82c16200 r5:00001000 r4:7f04b000 [<802ea434>] (module_memfree) from [<80388aec>] (bpf_jit_free_exec+0x10/0x14 kernel/bpf/core.c:1048) r5:00001000 r4:dfa53000 [<80388adc>] (bpf_jit_free_exec) from [<80388cac>] (bpf_jit_binary_free kernel/bpf/core.c:1094 [inline]) [<80388adc>] (bpf_jit_free_exec) from [<80388cac>] (bpf_jit_free+0x68/0xe4 kernel/bpf/core.c:1218) [<80388c44>] (bpf_jit_free) from [<80389d8c>] (bpf_prog_free_deferred+0x14c/0x164 kernel/bpf/core.c:2772) r5:848b8350 r4:848b8000 [<80389c40>] (bpf_prog_free_deferred) from [<80267064>] (process_one_work+0x19c/0x4a4 kernel/workqueue.c:2633) r7:ddde4280 r6:82c16200 r5:848b8350 r4:84252100 [<80266ec8>] (process_one_work) from [<802675ac>] (process_scheduled_works kernel/workqueue.c:2706 [inline]) [<80266ec8>] (process_one_work) from [<802675ac>] (worker_thread+0x240/0x48c kernel/workqueue.c:2787) r10:61c88647 r9:83679800 r8:ddde42a0 r7:82604d40 r6:ddde4280 r5:8425212c r4:84252100 [<8026736c>] (worker_thread) from [<8026e888>] (kthread+0x104/0x134 kernel/kthread.c:388) r10:00000000 r9:dfa11e90 r8:845ea6c0 r7:84252100 r6:8026736c r5:83679800 r4:845ea980 [<8026e784>] (kthread) from [<80200104>] (ret_from_fork+0x14/0x30 arch/arm/kernel/entry-common.S:134) Exception stack(0xdf97dfb0 to 0xdf97dff8) dfa0: 00000000 00000000 00000000 00000000 dfc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 dfe0: 00000000 00000000 00000000 00000000 00000013 00000000 r9:00000000 r8:00000000 r7:00000000 r6:00000000 r5:8026e784 r4:845ea980 INFO: task kworker/0:0:3000 blocked for more than 450 seconds. Not tainted 6.8.0-rc2-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/0:0 state:D stack:0 pid:3000 tgid:3000 ppid:2 flags:0x00000000 Workqueue: events bpf_prog_free_deferred Backtrace: [<81857a24>] (__schedule) from [<8185865c>] (__schedule_loop kernel/sched/core.c:6802 [inline]) [<81857a24>] (__schedule) from [<8185865c>] (schedule+0x2c/0xb8 kernel/sched/core.c:6817) r10:82c16005 r9:00000000 r8:8270dd78 r7:00000002 r6:df969dac r5:8367c800 r4:8367c800 [<81858630>] (schedule) from [<81858c28>] (schedule_preempt_disabled+0x18/0x24 kernel/sched/core.c:6874) r5:8367c800 r4:8270dd74 [<81858c10>] (schedule_preempt_disabled) from [<8185b510>] (__mutex_lock_common kernel/locking/mutex.c:684 [inline]) [<81858c10>] (schedule_preempt_disabled) from [<8185b510>] (__mutex_lock.constprop.0+0x2e8/0xae0 kernel/locking/mutex.c:752) [<8185b228>] (__mutex_lock.constprop.0) from [<8185bddc>] (__mutex_lock_slowpath+0x14/0x18 kernel/locking/mutex.c:1040) r10:82c16005 r9:df969e38 r8:00000000 r7:ffffffff r6:00000000 r5:848014c0 r4:00000000 [<8185bdc8>] (__mutex_lock_slowpath) from [<8185be1c>] (mutex_lock+0x3c/0x40 kernel/locking/mutex.c:286) [<8185bde0>] (mutex_lock) from [<8048df04>] (_vm_unmap_aliases+0x60/0x2e4 mm/vmalloc.c:2267) [<8048dea4>] (_vm_unmap_aliases) from [<80491aa4>] (vm_reset_perms mm/vmalloc.c:2753 [inline]) [<8048dea4>] (_vm_unmap_aliases) from [<80491aa4>] (vfree+0x170/0x1e0 mm/vmalloc.c:2832) r10:82c16005 r9:00000001 r8:00000000 r7:ffffffff r6:00000000 r5:848014c0 r4:00000000 [<80491934>] (vfree) from [<802ea464>] (module_memfree+0x30/0x50 kernel/module/main.c:1189) r9:8367c800 r8:00000000 r7:00000000 r6:82c16000 r5:00001000 r4:7f029000 [<802ea434>] (module_memfree) from [<80388aec>] (bpf_jit_free_exec+0x10/0x14 kernel/bpf/core.c:1048) r5:00001000 r4:df91b000 [<80388adc>] (bpf_jit_free_exec) from [<80388cac>] (bpf_jit_binary_free kernel/bpf/core.c:1094 [inline]) [<80388adc>] (bpf_jit_free_exec) from [<80388cac>] (bpf_jit_free+0x68/0xe4 kernel/bpf/core.c:1218) [<80388c44>] (bpf_jit_free) from [<80389d8c>] (bpf_prog_free_deferred+0x14c/0x164 kernel/bpf/core.c:2772) r5:847af350 r4:847af000 [<80389c40>] (bpf_prog_free_deferred) from [<80267064>] (process_one_work+0x19c/0x4a4 kernel/workqueue.c:2633) r7:dddd1280 r6:82c16000 r5:847af350 r4:845e7580 [<80266ec8>] (process_one_work) from [<802675ac>] (process_scheduled_works kernel/workqueue.c:2706 [inline]) [<80266ec8>] (process_one_work) from [<802675ac>] (worker_thread+0x240/0x48c kernel/workqueue.c:2787) r10:61c88647 r9:8367c800 r8:dddd12a0 r7:82604d40 r6:dddd1280 r5:845e75ac r4:845e7580 [<8026736c>] (worker_thread) from [<8026e888>] (kthread+0x104/0x134 kernel/kthread.c:388) r10:00000000 r9:e01b5e90 r8:843f5d40 r7:845e7580 r6:8026736c r5:8367c800 r4:841828c0 [<8026e784>] (kthread) from [<80200104>] (ret_from_fork+0x14/0x30 arch/arm/kernel/entry-common.S:134) Exception stack(0xdf969fb0 to 0xdf969ff8) 9fa0: 00000000 00000000 00000000 00000000 9fc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 9fe0: 00000000 00000000 00000000 00000000 00000013 00000000 r9:00000000 r8:00000000 r7:00000000 r6:00000000 r5:8026e784 r4:841828c0 INFO: task kworker/0:1:3002 blocked for more than 450 seconds. Not tainted 6.8.0-rc2-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/0:1 state:D stack:0 pid:3002 tgid:3002 ppid:2 flags:0x00000000 Workqueue: events bpf_prog_free_deferred Backtrace: [<81857a24>] (__schedule) from [<8185865c>] (__schedule_loop kernel/sched/core.c:6802 [inline]) [<81857a24>] (__schedule) from [<8185865c>] (schedule+0x2c/0xb8 kernel/sched/core.c:6817) r10:82c16005 r9:00000000 r8:8270dd78 r7:00000002 r6:df979dac r5:8367e000 r4:8367e000 [<81858630>] (schedule) from [<81858c28>] (schedule_preempt_disabled+0x18/0x24 kernel/sched/core.c:6874) r5:8367e000 r4:8270dd74 [<81858c10>] (schedule_preempt_disabled) from [<8185b510>] (__mutex_lock_common kernel/locking/mutex.c:684 [inline]) [<81858c10>] (schedule_preempt_disabled) from [<8185b510>] (__mutex_lock.constprop.0+0x2e8/0xae0 kernel/locking/mutex.c:752) [<8185b228>] (__mutex_lock.constprop.0) from [<8185bddc>] (__mutex_lock_slowpath+0x14/0x18 kernel/locking/mutex.c:1040) r10:82c16005 r9:df979e38 r8:00000000 r7:ffffffff r6:00000000 r5:84919000 r4:00000000 [<8185bdc8>] (__mutex_lock_slowpath) from [<8185be1c>] (mutex_lock+0x3c/0x40 kernel/locking/mutex.c:286) [<8185bde0>] (mutex_lock) from [<8048df04>] (_vm_unmap_aliases+0x60/0x2e4 mm/vmalloc.c:2267) [<8048dea4>] (_vm_unmap_aliases) from [<80491aa4>] (vm_reset_perms mm/vmalloc.c:2753 [inline]) [<8048dea4>] (_vm_unmap_aliases) from [<80491aa4>] (vfree+0x170/0x1e0 mm/vmalloc.c:2832) r10:82c16005 r9:00000001 r8:00000000 r7:ffffffff r6:00000000 r5:84919000 r4:00000000 [<80491934>] (vfree) from [<802ea464>] (module_memfree+0x30/0x50 kernel/module/main.c:1189) r9:8367e000 r8:00000000 r7:00000000 r6:82c16000 r5:00001000 r4:7f065000 [<802ea434>] (module_memfree) from [<80388aec>] (bpf_jit_free_exec+0x10/0x14 kernel/bpf/core.c:1048) r5:00001000 r4:dfb7b000 [<80388adc>] (bpf_jit_free_exec) from [<80388cac>] (bpf_jit_binary_free kernel/bpf/core.c:1094 [inline]) [<80388adc>] (bpf_jit_free_exec) from [<80388cac>] (bpf_jit_free+0x68/0xe4 kernel/bpf/core.c:1218) [<80388c44>] (bpf_jit_free) from [<80389d8c>] (bpf_prog_free_deferred+0x14c/0x164 kernel/bpf/core.c:2772) r5:848bb750 r4:848bb400 [<80389c40>] (bpf_prog_free_deferred) from [<80267064>] (process_one_work+0x19c/0x4a4 kernel/workqueue.c:2633) r7:dddd1280 r6:82c16000 r5:848bb750 r4:845e7680 [<80266ec8>] (process_one_work) from [<802675ac>] (process_scheduled_works kernel/workqueue.c:2706 [inline]) [<80266ec8>] (process_one_work) from [<802675ac>] (worker_thread+0x240/0x48c kernel/workqueue.c:2787) r10:61c88647 r9:8367e000 r8:dddd12a0 r7:82604d40 r6:dddd1280 r5:845e76ac r4:845e7680 [<8026736c>] (worker_thread) from [<8026e888>] (kthread+0x104/0x134 kernel/kthread.c:388) r10:00000000 r9:df969e90 r8:845ea980 r7:845e7680 r6:8026736c r5:8367e000 r4:845fbc80 [<8026e784>] (kthread) from [<80200104>] (ret_from_fork+0x14/0x30 arch/arm/kernel/entry-common.S:134) Exception stack(0xdf979fb0 to 0xdf979ff8) 9fa0: 00000000 00000000 00000000 00000000 9fc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 9fe0: 00000000 00000000 00000000 00000000 00000013 00000000 r9:00000000 r8:00000000 r7:00000000 r6:00000000 r5:8026e784 r4:845fbc80 INFO: task kworker/0:4:3003 blocked for more than 450 seconds. Not tainted 6.8.0-rc2-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/0:4 state:D stack:0 pid:3003 tgid:3003 ppid:2 flags:0x00000000 Workqueue: events bpf_prog_free_deferred Backtrace: [<81857a24>] (__schedule) from [<8185865c>] (__schedule_loop kernel/sched/core.c:6802 [inline]) [<81857a24>] (__schedule) from [<8185865c>] (schedule+0x2c/0xb8 kernel/sched/core.c:6817) r10:82c16005 r9:00000000 r8:8270dd78 r7:00000002 r6:df985dac r5:8367a400 r4:8367a400 [<81858630>] (schedule) from [<81858c28>] (schedule_preempt_disabled+0x18/0x24 kernel/sched/core.c:6874) r5:8367a400 r4:8270dd74 [<81858c10>] (schedule_preempt_disabled) from [<8185b510>] (__mutex_lock_common kernel/locking/mutex.c:684 [inline]) [<81858c10>] (schedule_preempt_disabled) from [<8185b510>] (__mutex_lock.constprop.0+0x2e8/0xae0 kernel/locking/mutex.c:752) [<8185b228>] (__mutex_lock.constprop.0) from [<8185bddc>] (__mutex_lock_slowpath+0x14/0x18 kernel/locking/mutex.c:1040) r10:82c16005 r9:df985e38 r8:00000000 r7:ffffffff r6:00000000 r5:8485bbc0 r4:00000000 [<8185bdc8>] (__mutex_lock_slowpath) from [<8185be1c>] (mutex_lock+0x3c/0x40 kernel/locking/mutex.c:286) [<8185bde0>] (mutex_lock) from [<8048df04>] (_vm_unmap_aliases+0x60/0x2e4 mm/vmalloc.c:2267) [<8048dea4>] (_vm_unmap_aliases) from [<80491aa4>] (vm_reset_perms mm/vmalloc.c:2753 [inline]) [<8048dea4>] (_vm_unmap_aliases) from [<80491aa4>] (vfree+0x170/0x1e0 mm/vmalloc.c:2832) r10:82c16005 r9:00000001 r8:00000000 r7:ffffffff r6:00000000 r5:8485bbc0 r4:00000000 [<80491934>] (vfree) from [<802ea464>] (module_memfree+0x30/0x50 kernel/module/main.c:1189) r9:8367a400 r8:00000000 r7:00000000 r6:82c16000 r5:00001000 r4:7f1ff000 [<802ea434>] (module_memfree) from [<80388aec>] (bpf_jit_free_exec+0x10/0x14 kernel/bpf/core.c:1048) r5:00001000 r4:dfd9d000 [<80388adc>] (bpf_jit_free_exec) from [<80388cac>] (bpf_jit_binary_free kernel/bpf/core.c:1094 [inline]) [<80388adc>] (bpf_jit_free_exec) from [<80388cac>] (bpf_jit_free+0x68/0xe4 kernel/bpf/core.c:1218) [<80388c44>] (bpf_jit_free) from [<80389d8c>] (bpf_prog_free_deferred+0x14c/0x164 kernel/bpf/core.c:2772) r5:84a42750 r4:84a42400 [<80389c40>] (bpf_prog_free_deferred) from [<80267064>] (process_one_work+0x19c/0x4a4 kernel/workqueue.c:2633) r7:dddd1280 r6:82c16000 r5:84a42750 r4:845e7780 [<80266ec8>] (process_one_work) from [<802675ac>] (process_scheduled_works kernel/workqueue.c:2706 [inline]) [<80266ec8>] (process_one_work) from [<802675ac>] (worker_thread+0x240/0x48c kernel/workqueue.c:2787) r10:61c88647 r9:8367a400 r8:dddd12a0 r7:82604d40 r6:dddd1280 r5:845e77ac r4:845e7780 [<8026736c>] (worker_thread) from [<8026e888>] (kthread+0x104/0x134 kernel/kthread.c:388) r10:00000000 r9:df979e90 r8:843fe700 r7:845e7780 r6:8026736c r5:8367a400 r4:845fbc80 [<8026e784>] (kthread) from [<80200104>] (ret_from_fork+0x14/0x30 arch/arm/kernel/entry-common.S:134) Exception stack(0xdf985fb0 to 0xdf985ff8) 5fa0: 00000000 00000000 00000000 00000000 5fc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 5fe0: 00000000 00000000 00000000 00000000 00000013 00000000 r9:00000000 r8:00000000 r7:00000000 r6:00000000 r5:8026e784 r4:845fbc80 INFO: task kworker/0:5:3005 blocked for more than 450 seconds. Not tainted 6.8.0-rc2-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/0:5 state:D stack:0 pid:3005 tgid:3005 ppid:2 flags:0x00000000 Workqueue: events bpf_prog_free_deferred Backtrace: [<81857a24>] (__schedule) from [<8185865c>] (__schedule_loop kernel/sched/core.c:6802 [inline]) [<81857a24>] (__schedule) from [<8185865c>] (schedule+0x2c/0xb8 kernel/sched/core.c:6817) r10:82c16005 r9:00000000 r8:8270dd78 r7:00000002 r6:df995dac r5:82ee0000 r4:82ee0000 [<81858630>] (schedule) from [<81858c28>] (schedule_preempt_disabled+0x18/0x24 kernel/sched/core.c:6874) r5:82ee0000 r4:8270dd74 [<81858c10>] (schedule_preempt_disabled) from [<8185b510>] (__mutex_lock_common kernel/locking/mutex.c:684 [inline]) [<81858c10>] (schedule_preempt_disabled) from [<8185b510>] (__mutex_lock.constprop.0+0x2e8/0xae0 kernel/locking/mutex.c:752) [<8185b228>] (__mutex_lock.constprop.0) from [<8185bddc>] (__mutex_lock_slowpath+0x14/0x18 kernel/locking/mutex.c:1040) r10:82c16005 r9:df995e38 r8:00000000 r7:ffffffff r6:00000000 r5:8497cdc0 r4:00000000 [<8185bdc8>] (__mutex_lock_slowpath) from [<8185be1c>] (mutex_lock+0x3c/0x40 kernel/locking/mutex.c:286) [<8185bde0>] (mutex_lock) from [<8048df04>] (_vm_unmap_aliases+0x60/0x2e4 mm/vmalloc.c:2267) [<8048dea4>] (_vm_unmap_aliases) from [<80491aa4>] (vm_reset_perms mm/vmalloc.c:2753 [inline]) [<8048dea4>] (_vm_unmap_aliases) from [<80491aa4>] (vfree+0x170/0x1e0 mm/vmalloc.c:2832) r10:82c16005 r9:00000001 r8:00000000 r7:ffffffff r6:00000000 r5:8497cdc0 r4:00000000 [<80491934>] (vfree) from [<802ea464>] (module_memfree+0x30/0x50 kernel/module/main.c:1189) r9:82ee0000 r8:00000000 r7:00000000 r6:82c16000 r5:00001000 r4:7f035000 [<802ea434>] (module_memfree) from [<80388aec>] (bpf_jit_free_exec+0x10/0x14 kernel/bpf/core.c:1048) r5:00001000 r4:dfd6b000 [<80388adc>] (bpf_jit_free_exec) from [<80388cac>] (bpf_jit_binary_free kernel/bpf/core.c:1094 [inline]) [<80388adc>] (bpf_jit_free_exec) from [<80388cac>] (bpf_jit_free+0x68/0xe4 kernel/bpf/core.c:1218) [<80388c44>] (bpf_jit_free) from [<80389d8c>] (bpf_prog_free_deferred+0x14c/0x164 kernel/bpf/core.c:2772) r5:8476bb50 r4:8476b800 [<80389c40>] (bpf_prog_free_deferred) from [<80267064>] (process_one_work+0x19c/0x4a4 kernel/workqueue.c:2633) r7:dddd1280 r6:82c16000 r5:8476bb50 r4:845e7600 [<80266ec8>] (process_one_work) from [<802675ac>] (process_scheduled_works kernel/workqueue.c:2706 [inline]) [<80266ec8>] (process_one_work) from [<802675ac>] (worker_thread+0x240/0x48c kernel/workqueue.c:2787) r10:61c88647 r9:82ee0000 r8:dddd12a0 r7:82604d40 r6:dddd1280 r5:845e762c r4:845e7600 [<8026736c>] (worker_thread) from [<8026e888>] (kthread+0x104/0x134 kernel/kthread.c:388) r10:00000000 r9:df985e90 r8:84291cc0 r7:845e7600 r6:8026736c r5:82ee0000 r4:845fb6c0 [<8026e784>] (kthread) from [<80200104>] (ret_from_fork+0x14/0x30 arch/arm/kernel/entry-common.S:134) Exception stack(0xdf995fb0 to 0xdf995ff8) 5fa0: 00000000 00000000 00000000 00000000 5fc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 5fe0: 00000000 00000000 00000000 00000000 00000013 00000000 r9:00000000 r8:00000000 r7:00000000 r6:00000000 r5:8026e784 r4:845fb6c0 INFO: task kworker/0:6:3007 blocked for more than 451 seconds. Not tainted 6.8.0-rc2-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/0:6 state:D stack:0 pid:3007 tgid:3007 ppid:2 flags:0x00000000 Workqueue: events bpf_prog_free_deferred Backtrace: [<81857a24>] (__schedule) from [<8185865c>] (__schedule_loop kernel/sched/core.c:6802 [inline]) [<81857a24>] (__schedule) from [<8185865c>] (schedule+0x2c/0xb8 kernel/sched/core.c:6817) r10:82c16005 r9:00000000 r8:8270dd78 r7:00000002 r6:df9a9dac r5:83e54800 r4:83e54800 [<81858630>] (schedule) from [<81858c28>] (schedule_preempt_disabled+0x18/0x24 kernel/sched/core.c:6874) r5:83e54800 r4:8270dd74 [<81858c10>] (schedule_preempt_disabled) from [<8185b510>] (__mutex_lock_common kernel/locking/mutex.c:684 [inline]) [<81858c10>] (schedule_preempt_disabled) from [<8185b510>] (__mutex_lock.constprop.0+0x2e8/0xae0 kernel/locking/mutex.c:752) [<8185b228>] (__mutex_lock.constprop.0) from [<8185bddc>] (__mutex_lock_slowpath+0x14/0x18 kernel/locking/mutex.c:1040) r10:82c16005 r9:df9a9e38 r8:00000000 r7:ffffffff r6:00000000 r5:8476c080 r4:00000000 [<8185bdc8>] (__mutex_lock_slowpath) from [<8185be1c>] (mutex_lock+0x3c/0x40 kernel/locking/mutex.c:286) [<8185bde0>] (mutex_lock) from [<8048df04>] (_vm_unmap_aliases+0x60/0x2e4 mm/vmalloc.c:2267) [<8048dea4>] (_vm_unmap_aliases) from [<80491aa4>] (vm_reset_perms mm/vmalloc.c:2753 [inline]) [<8048dea4>] (_vm_unmap_aliases) from [<80491aa4>] (vfree+0x170/0x1e0 mm/vmalloc.c:2832) r10:82c16005 r9:00000001 r8:00000000 r7:ffffffff r6:00000000 r5:8476c080 r4:00000000 [<80491934>] (vfree) from [<802ea464>] (module_memfree+0x30/0x50 kernel/module/main.c:1189) r9:83e54800 r8:00000000 r7:00000000 r6:82c16000 r5:00001000 r4:7f18b000 [<802ea434>] (module_memfree) from [<80388aec>] (bpf_jit_free_exec+0x10/0x14 kernel/bpf/core.c:1048) r5:00001000 r4:eaded000 [<80388adc>] (bpf_jit_free_exec) from [<80388cac>] (bpf_jit_binary_free kernel/bpf/core.c:1094 [inline]) [<80388adc>] (bpf_jit_free_exec) from [<80388cac>] (bpf_jit_free+0x68/0xe4 kernel/bpf/core.c:1218) [<80388c44>] (bpf_jit_free) from [<80389d8c>] (bpf_prog_free_deferred+0x14c/0x164 kernel/bpf/core.c:2772) r5:845a3750 r4:845a3400 [<80389c40>] (bpf_prog_free_deferred) from [<80267064>] (process_one_work+0x19c/0x4a4 kernel/workqueue.c:2633) r7:dddd1280 r6:82c16000 r5:845a3750 r4:845e7800 [<80266ec8>] (process_one_work) from [<802675ac>] (process_scheduled_works kernel/workqueue.c:2706 [inline]) [<80266ec8>] (process_one_work) from [<802675ac>] (worker_thread+0x240/0x48c kernel/workqueue.c:2787) r10:61c88647 r9:83e54800 r8:dddd12a0 r7:82604d40 r6:dddd1280 r5:845e782c r4:845e7800 [<8026736c>] (worker_thread) from [<8026e888>] (kthread+0x104/0x134 kernel/kthread.c:388) r10:00000000 r9:df985e90 r8:82f4bf00 r7:845e7800 r6:8026736c r5:83e54800 r4:84601cc0 [<8026e784>] (kthread) from [<80200104>] (ret_from_fork+0x14/0x30 arch/arm/kernel/entry-common.S:134) Exception stack(0xdf9a9fb0 to 0xdf9a9ff8) 9fa0: 00000000 00000000 00000000 00000000 9fc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 9fe0: 00000000 00000000 00000000 00000000 00000013 00000000 r9:00000000 r8:00000000 r7:00000000 r6:00000000 r5:8026e784 r4:84601cc0 INFO: task kworker/0:7:3009 blocked for more than 451 seconds. Not tainted 6.8.0-rc2-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/0:7 state:D stack:0 pid:3009 tgid:3009 ppid:2 flags:0x00000000 Workqueue: events bpf_prog_free_deferred Backtrace: [<81857a24>] (__schedule) from [<8185865c>] (__schedule_loop kernel/sched/core.c:6802 [inline]) [<81857a24>] (__schedule) from [<8185865c>] (schedule+0x2c/0xb8 kernel/sched/core.c:6817) r10:82c16005 r9:00000000 r8:8270dd78 r7:00000002 r6:df965dac r5:8411b000 r4:8411b000 [<81858630>] (schedule) from [<81858c28>] (schedule_preempt_disabled+0x18/0x24 kernel/sched/core.c:6874) r5:8411b000 r4:8270dd74 [<81858c10>] (schedule_preempt_disabled) from [<8185b510>] (__mutex_lock_common kernel/locking/mutex.c:684 [inline]) [<81858c10>] (schedule_preempt_disabled) from [<8185b510>] (__mutex_lock.constprop.0+0x2e8/0xae0 kernel/locking/mutex.c:752) [<8185b228>] (__mutex_lock.constprop.0) from [<8185bddc>] (__mutex_lock_slowpath+0x14/0x18 kernel/locking/mutex.c:1040) r10:82c16005 r9:df965e38 r8:00000000 r7:ffffffff r6:00000000 r5:84a1ce40 r4:00000000 [<8185bdc8>] (__mutex_lock_slowpath) from [<8185be1c>] (mutex_lock+0x3c/0x40 kernel/locking/mutex.c:286) [<8185bde0>] (mutex_lock) from [<8048df04>] (_vm_unmap_aliases+0x60/0x2e4 mm/vmalloc.c:2267) [<8048dea4>] (_vm_unmap_aliases) from [<80491aa4>] (vm_reset_perms mm/vmalloc.c:2753 [inline]) [<8048dea4>] (_vm_unmap_aliases) from [<80491aa4>] (vfree+0x170/0x1e0 mm/vmalloc.c:2832) r10:82c16005 r9:00000001 r8:00000000 r7:ffffffff r6:00000000 r5:84a1ce40 r4:00000000 [<80491934>] (vfree) from [<802ea464>] (module_memfree+0x30/0x50 kernel/module/main.c:1189) r9:8411b000 r8:00000000 r7:00000000 r6:82c16000 r5:00001000 r4:7f035000 [<802ea434>] (module_memfree) from [<80388aec>] (bpf_jit_free_exec+0x10/0x14 kernel/bpf/core.c:1048) r5:00001000 r4:df87d000 [<80388adc>] (bpf_jit_free_exec) from [<80388cac>] (bpf_jit_binary_free kernel/bpf/core.c:1094 [inline]) [<80388adc>] (bpf_jit_free_exec) from [<80388cac>] (bpf_jit_free+0x68/0xe4 kernel/bpf/core.c:1218) [<80388c44>] (bpf_jit_free) from [<80389d8c>] (bpf_prog_free_deferred+0x14c/0x164 kernel/bpf/core.c:2772) r5:848eef50 r4:848eec00 [<80389c40>] (bpf_prog_free_deferred) from [<80267064>] (process_one_work+0x19c/0x4a4 kernel/workqueue.c:2633) r7:dddd1280 r6:82c16000 r5:848eef50 r4:845e7880 [<80266ec8>] (process_one_work) from [<802675ac>] (process_scheduled_works kernel/workqueue.c:2706 [inline]) [<80266ec8>] (process_one_work) from [<802675ac>] (worker_thread+0x240/0x48c kernel/workqueue.c:2787) r10:61c88647 r9:8411b000 r8:dddd12a0 r7:82604d40 r6:dddd1280 r5:845e78ac r4:845e7880 [<8026736c>] (worker_thread) from [<8026e888>] (kthread+0x104/0x134 kernel/kthread.c:388) r10:00000000 r9:df985e90 r8:845fbb80 r7:845e7880 r6:8026736c r5:8411b000 r4:842911c0 [<8026e784>] (kthread) from [<80200104>] (ret_from_fork+0x14/0x30 arch/arm/kernel/entry-common.S:134) Exception stack(0xdf965fb0 to 0xdf965ff8) 5fa0: 00000000 00000000 00000000 00000000 5fc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 5fe0: 00000000 00000000 00000000 00000000 00000013 00000000 r9:00000000 r8:00000000 r7:00000000 r6:00000000 r5:8026e784 r4:842911c0 INFO: task kworker/0:8:3012 blocked for more than 451 seconds. Not tainted 6.8.0-rc2-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/0:8 state:D stack:0 pid:3012 tgid:3012 ppid:2 flags:0x00000000 Workqueue: events bpf_prog_free_deferred Backtrace: [<81857a24>] (__schedule) from [<8185865c>] (__schedule_loop kernel/sched/core.c:6802 [inline]) [<81857a24>] (__schedule) from [<8185865c>] (schedule+0x2c/0xb8 kernel/sched/core.c:6817) r10:82c16005 r9:00000000 r8:8270dd78 r7:00000002 r6:df9addac r5:8411a400 r4:8411a400 [<81858630>] (schedule) from [<81858c28>] (schedule_preempt_disabled+0x18/0x24 kernel/sched/core.c:6874) r5:8411a400 r4:8270dd74 [<81858c10>] (schedule_preempt_disabled) from [<8185b510>] (__mutex_lock_common kernel/locking/mutex.c:684 [inline]) [<81858c10>] (schedule_preempt_disabled) from [<8185b510>] (__mutex_lock.constprop.0+0x2e8/0xae0 kernel/locking/mutex.c:752) [<8185b228>] (__mutex_lock.constprop.0) from [<8185bddc>] (__mutex_lock_slowpath+0x14/0x18 kernel/locking/mutex.c:1040) r10:82c16005 r9:df9ade38 r8:00000000 r7:ffffffff r6:00000000 r5:847f3dc0 r4:00000000 [<8185bdc8>] (__mutex_lock_slowpath) from [<8185be1c>] (mutex_lock+0x3c/0x40 kernel/locking/mutex.c:286) [<8185bde0>] (mutex_lock) from [<8048df04>] (_vm_unmap_aliases+0x60/0x2e4 mm/vmalloc.c:2267) [<8048dea4>] (_vm_unmap_aliases) from [<80491aa4>] (vm_reset_perms mm/vmalloc.c:2753 [inline]) [<8048dea4>] (_vm_unmap_aliases) from [<80491aa4>] (vfree+0x170/0x1e0 mm/vmalloc.c:2832) r10:82c16005 r9:00000001 r8:00000000 r7:ffffffff r6:00000000 r5:847f3dc0 r4:00000000 [<80491934>] (vfree) from [<802ea464>] (module_memfree+0x30/0x50 kernel/module/main.c:1189) r9:8411a400 r8:00000000 r7:00000000 r6:82c16000 r5:00001000 r4:7f24d000 [<802ea434>] (module_memfree) from [<80388aec>] (bpf_jit_free_exec+0x10/0x14 kernel/bpf/core.c:1048) r5:00001000 r4:dfba5000 [<80388adc>] (bpf_jit_free_exec) from [<80388cac>] (bpf_jit_binary_free kernel/bpf/core.c:1094 [inline]) [<80388adc>] (bpf_jit_free_exec) from [<80388cac>] (bpf_jit_free+0x68/0xe4 kernel/bpf/core.c:1218) [<80388c44>] (bpf_jit_free) from [<80389d8c>] (bpf_prog_free_deferred+0x14c/0x164 kernel/bpf/core.c:2772) r5:8493f350 r4:8493f000 [<80389c40>] (bpf_prog_free_deferred) from [<80267064>] (process_one_work+0x19c/0x4a4 kernel/workqueue.c:2633) r7:dddd1280 r6:82c16000 r5:8493f350 r4:845e7700 [<80266ec8>] (process_one_work) from [<802675ac>] (process_scheduled_works kernel/workqueue.c:2706 [inline]) [<80266ec8>] (process_one_work) from [<802675ac>] (worker_thread+0x240/0x48c kernel/workqueue.c:2787) r10:61c88647 r9:8411a400 r8:dddd12a0 r7:82604d40 r6:dddd1280 r5:845e772c r4:845e7700 [<8026736c>] (worker_thread) from [<8026e888>] (kthread+0x104/0x134 kernel/kthread.c:388) r10:00000000 r9:df985e90 r8:84601cc0 r7:845e7700 r6:8026736c r5:8411a400 r4:843e3ac0 [<8026e784>] (kthread) from [<80200104>] (ret_from_fork+0x14/0x30 arch/arm/kernel/entry-common.S:134) Exception stack(0xdf9adfb0 to 0xdf9adff8) dfa0: 00000000 00000000 00000000 00000000 dfc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 dfe0: 00000000 00000000 00000000 00000000 00000013 00000000 r9:00000000 r8:00000000 r7:00000000 r6:00000000 r5:8026e784 r4:843e3ac0 Future hung task reports are suppressed, see sysctl kernel.hung_task_warnings NMI backtrace for cpu 1 CPU: 1 PID: 30 Comm: khungtaskd Not tainted 6.8.0-rc2-syzkaller #0 Hardware name: ARM-Versatile Express Backtrace: [<818365cc>] (dump_backtrace) from [<818366c8>] (show_stack+0x18/0x1c arch/arm/kernel/traps.c:256) r7:00000000 r6:00000113 r5:60000193 r4:81fbd200 [<818366b0>] (show_stack) from [<81853bbc>] (__dump_stack lib/dump_stack.c:88 [inline]) [<818366b0>] (show_stack) from [<81853bbc>] (dump_stack_lvl+0x48/0x54 lib/dump_stack.c:106) [<81853b74>] (dump_stack_lvl) from [<81853be0>] (dump_stack+0x18/0x1c lib/dump_stack.c:113) r5:00000001 r4:00000001 [<81853bc8>] (dump_stack) from [<818239f8>] (nmi_cpu_backtrace+0x160/0x17c lib/nmi_backtrace.c:113) [<81823898>] (nmi_cpu_backtrace) from [<81823b44>] (nmi_trigger_cpumask_backtrace+0x130/0x1d8 lib/nmi_backtrace.c:62) r7:00000001 r6:8260c494 r5:8261a7d8 r4:ffffffff [<81823a14>] (nmi_trigger_cpumask_backtrace) from [<80210574>] (arch_trigger_cpumask_backtrace+0x18/0x1c arch/arm/kernel/smp.c:851) r9:827d8cdf r8:82894eb8 r7:8260c5ec r6:00007d6b r5:8261adc8 r4:84a6202c [<8021055c>] (arch_trigger_cpumask_backtrace) from [<80347e54>] (trigger_all_cpu_backtrace include/linux/nmi.h:160 [inline]) [<8021055c>] (arch_trigger_cpumask_backtrace) from [<80347e54>] (check_hung_uninterruptible_tasks kernel/hung_task.c:222 [inline]) [<8021055c>] (arch_trigger_cpumask_backtrace) from [<80347e54>] (watchdog+0x48c/0x59c kernel/hung_task.c:379) [<803479c8>] (watchdog) from [<8026e888>] (kthread+0x104/0x134 kernel/kthread.c:388) r10:00000000 r9:df819e58 r8:82e67440 r7:00000000 r6:803479c8 r5:82ee1800 r4:82f458c0 [<8026e784>] (kthread) from [<80200104>] (ret_from_fork+0x14/0x30 arch/arm/kernel/entry-common.S:134) 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 r9:00000000 r8:00000000 r7:00000000 r6:00000000 r5:8026e784 r4:82f458c0 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 2801 Comm: klogd Not tainted 6.8.0-rc2-syzkaller #0 Hardware name: ARM-Versatile Express PC is at _raw_spin_lock+0x0/0x58 kernel/locking/spinlock.c:153 LR is at spin_lock include/linux/spinlock.h:351 [inline] LR is at unix_peer_get net/unix/af_unix.c:241 [inline] LR is at unix_dgram_sendmsg+0x320/0x9e8 net/unix/af_unix.c:1949 pc : [<81860d48>] lr : [<815f54d4>] psr: 60000013 sp : ebde9df8 ip : ebde9dd8 fp : ebde9e6c r10: 83e9fe6c r9 : 84118000 r8 : 83e9fc00 r7 : 0000008c r6 : 00000000 r5 : 8313b900 r4 : ebde9e98 r3 : ffffff95 r2 : ebde9e34 r1 : 00000000 r0 : 83e9fe6c Flags: nZCv IRQs on FIQs on Mode SVC_32 ISA ARM Segment user Control: 30c5387d Table: 84255c40 DAC: fffffffd Backtrace: [<815f51b4>] (unix_dgram_sendmsg) from [<8134c0c0>] (sock_sendmsg_nosec net/socket.c:730 [inline]) [<815f51b4>] (unix_dgram_sendmsg) from [<8134c0c0>] (__sock_sendmsg+0x44/0x78 net/socket.c:745) r10:00000121 r9:84118000 r8:00000003 r7:8313b900 r6:8313b900 r5:ebde9e98 r4:00000000 [<8134c07c>] (__sock_sendmsg) from [<8134e3d0>] (__sys_sendto+0x108/0x14c net/socket.c:2191) r7:8313b900 r6:00000000 r5:00004000 r4:00000000 [<8134e2c8>] (__sys_sendto) from [<8134e458>] (__do_sys_send net/socket.c:2213 [inline]) [<8134e2c8>] (__sys_sendto) from [<8134e458>] (sys_send+0x20/0x28 net/socket.c:2210) r8:80200288 r7:00000121 r6:76f8e5a0 r5:76f8e5a0 r4:01ba11a8 [<8134e438>] (sys_send) from [<80200060>] (ret_fast_syscall+0x0/0x1c arch/arm/mm/proc-v7.S:66) Exception stack(0xebde9fa8 to 0xebde9ff0) 9fa0: 01ba11a8 76f8e5a0 00000003 01ba8780 0000008c 00004000 9fc0: 01ba11a8 76f8e5a0 76f8e5a0 00000121 00000000 00000013 76e60e60 01ba8783 9fe0: 00000000 7efcbbc8 76de8460 76ded918