INFO: task kworker/0:20:7246 blocked for more than 430 seconds. Not tainted 6.8.0-rc5-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/0:20 state:D stack:0 pid:7246 tgid:7246 ppid:2 flags:0x00000000 Workqueue: events bpf_prog_free_deferred Backtrace: [<81857fcc>] (__schedule) from [<81858c04>] (__schedule_loop kernel/sched/core.c:6802 [inline]) [<81857fcc>] (__schedule) from [<81858c04>] (schedule+0x2c/0xb8 kernel/sched/core.c:6817) r10:82c16005 r9:00000000 r8:8270dd7c r7:00000002 r6:ed2b9dac r5:834b6c00 r4:834b6c00 [<81858bd8>] (schedule) from [<818591d0>] (schedule_preempt_disabled+0x18/0x24 kernel/sched/core.c:6874) r5:834b6c00 r4:8270dd78 [<818591b8>] (schedule_preempt_disabled) from [<8185bab8>] (__mutex_lock_common kernel/locking/mutex.c:684 [inline]) [<818591b8>] (schedule_preempt_disabled) from [<8185bab8>] (__mutex_lock.constprop.0+0x2e8/0xae0 kernel/locking/mutex.c:752) [<8185b7d0>] (__mutex_lock.constprop.0) from [<8185c384>] (__mutex_lock_slowpath+0x14/0x18 kernel/locking/mutex.c:1040) r10:82c16005 r9:ed2b9e38 r8:00000000 r7:ffffffff r6:00000000 r5:85125600 r4:00000000 [<8185c370>] (__mutex_lock_slowpath) from [<8185c3c4>] (mutex_lock+0x3c/0x40 kernel/locking/mutex.c:286) [<8185c388>] (mutex_lock) from [<8048e034>] (_vm_unmap_aliases+0x60/0x2e4 mm/vmalloc.c:2267) [<8048dfd4>] (_vm_unmap_aliases) from [<80491bd4>] (vm_reset_perms mm/vmalloc.c:2753 [inline]) [<8048dfd4>] (_vm_unmap_aliases) from [<80491bd4>] (vfree+0x170/0x1e0 mm/vmalloc.c:2832) r10:82c16005 r9:00000001 r8:00000000 r7:ffffffff r6:00000000 r5:85125600 r4:00000000 [<80491a64>] (vfree) from [<802ea46c>] (module_memfree+0x30/0x50 kernel/module/main.c:1189) r9:834b6c00 r8:00000000 r7:00000000 r6:82c16000 r5:00001000 r4:7f230000 [<802ea43c>] (module_memfree) from [<80388bc4>] (bpf_jit_free_exec+0x10/0x14 kernel/bpf/core.c:1048) r5:00001000 r4:e0101000 [<80388bb4>] (bpf_jit_free_exec) from [<80388d84>] (bpf_jit_binary_free kernel/bpf/core.c:1094 [inline]) [<80388bb4>] (bpf_jit_free_exec) from [<80388d84>] (bpf_jit_free+0x68/0xe4 kernel/bpf/core.c:1218) [<80388d1c>] (bpf_jit_free) from [<80389e64>] (bpf_prog_free_deferred+0x14c/0x164 kernel/bpf/core.c:2772) r5:86975b50 r4:86975800 [<80389d18>] (bpf_prog_free_deferred) from [<80267028>] (process_one_work+0x19c/0x4a4 kernel/workqueue.c:2633) r7:dddd1280 r6:82c16000 r5:86975b50 r4:84ff6c80 [<80266e8c>] (process_one_work) from [<80267570>] (process_scheduled_works kernel/workqueue.c:2706 [inline]) [<80266e8c>] (process_one_work) from [<80267570>] (worker_thread+0x240/0x48c kernel/workqueue.c:2787) r10:61c88647 r9:834b6c00 r8:dddd12a0 r7:82604d40 r6:dddd1280 r5:84ff6cac r4:84ff6c80 [<80267330>] (worker_thread) from [<8026e84c>] (kthread+0x104/0x134 kernel/kthread.c:388) r10:00000000 r9:ed2b5e90 r8:850fd140 r7:84ff6c80 r6:80267330 r5:834b6c00 r4:85118d80 [<8026e748>] (kthread) from [<80200104>] (ret_from_fork+0x14/0x30 arch/arm/kernel/entry-common.S:134) Exception stack(0xed2b9fb0 to 0xed2b9ff8) 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 r5:8026e748 r4:85118d80 INFO: task kworker/1:2:21913 blocked for more than 430 seconds. Not tainted 6.8.0-rc5-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/1:2 state:D stack:0 pid:21913 tgid:21913 ppid:2 flags:0x00000000 Workqueue: events bpf_prog_free_deferred Backtrace: [<81857fcc>] (__schedule) from [<81858c04>] (__schedule_loop kernel/sched/core.c:6802 [inline]) [<81857fcc>] (__schedule) from [<81858c04>] (schedule+0x2c/0xb8 kernel/sched/core.c:6817) r10:82c16205 r9:00000000 r8:8270dd7c r7:00000002 r6:eb21ddac r5:83643c00 r4:83643c00 [<81858bd8>] (schedule) from [<818591d0>] (schedule_preempt_disabled+0x18/0x24 kernel/sched/core.c:6874) r5:83643c00 r4:8270dd78 [<818591b8>] (schedule_preempt_disabled) from [<8185bab8>] (__mutex_lock_common kernel/locking/mutex.c:684 [inline]) [<818591b8>] (schedule_preempt_disabled) from [<8185bab8>] (__mutex_lock.constprop.0+0x2e8/0xae0 kernel/locking/mutex.c:752) [<8185b7d0>] (__mutex_lock.constprop.0) from [<8185c384>] (__mutex_lock_slowpath+0x14/0x18 kernel/locking/mutex.c:1040) r10:82c16205 r9:eb21de38 r8:00000000 r7:ffffffff r6:00000000 r5:868c5ac0 r4:00000000 [<8185c370>] (__mutex_lock_slowpath) from [<8185c3c4>] (mutex_lock+0x3c/0x40 kernel/locking/mutex.c:286) [<8185c388>] (mutex_lock) from [<8048e034>] (_vm_unmap_aliases+0x60/0x2e4 mm/vmalloc.c:2267) [<8048dfd4>] (_vm_unmap_aliases) from [<80491bd4>] (vm_reset_perms mm/vmalloc.c:2753 [inline]) [<8048dfd4>] (_vm_unmap_aliases) from [<80491bd4>] (vfree+0x170/0x1e0 mm/vmalloc.c:2832) r10:82c16205 r9:00000001 r8:00000000 r7:ffffffff r6:00000000 r5:868c5ac0 r4:00000000 [<80491a64>] (vfree) from [<802ea46c>] (module_memfree+0x30/0x50 kernel/module/main.c:1189) r9:83643c00 r8:00000080 r7:00000000 r6:82c16200 r5:00001000 r4:7f22e000 [<802ea43c>] (module_memfree) from [<80388bc4>] (bpf_jit_free_exec+0x10/0x14 kernel/bpf/core.c:1048) r5:00001000 r4:e0015000 [<80388bb4>] (bpf_jit_free_exec) from [<80388d84>] (bpf_jit_binary_free kernel/bpf/core.c:1094 [inline]) [<80388bb4>] (bpf_jit_free_exec) from [<80388d84>] (bpf_jit_free+0x68/0xe4 kernel/bpf/core.c:1218) [<80388d1c>] (bpf_jit_free) from [<80389e64>] (bpf_prog_free_deferred+0x14c/0x164 kernel/bpf/core.c:2772) r5:86886350 r4:86886000 [<80389d18>] (bpf_prog_free_deferred) from [<80267028>] (process_one_work+0x19c/0x4a4 kernel/workqueue.c:2633) r7:ddde4280 r6:82c16200 r5:86886350 r4:85acb880 [<80266e8c>] (process_one_work) from [<80267570>] (process_scheduled_works kernel/workqueue.c:2706 [inline]) [<80266e8c>] (process_one_work) from [<80267570>] (worker_thread+0x240/0x48c kernel/workqueue.c:2787) r10:61c88647 r9:83643c00 r8:ddde42a0 r7:82604d40 r6:ddde4280 r5:85acb8ac r4:85acb880 [<80267330>] (worker_thread) from [<8026e84c>] (kthread+0x104/0x134 kernel/kthread.c:388) r10:00000000 r9:eb1e1e90 r8:850512c0 r7:85acb880 r6:80267330 r5:83643c00 r4:85a14340 [<8026e748>] (kthread) from [<80200104>] (ret_from_fork+0x14/0x30 arch/arm/kernel/entry-common.S:134) Exception stack(0xeb21dfb0 to 0xeb21dff8) 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 r5:8026e748 r4:85a14340 NMI backtrace for cpu 1 CPU: 1 PID: 31 Comm: khungtaskd Not tainted 6.8.0-rc5-syzkaller #0 Hardware name: ARM-Versatile Express Backtrace: [<81836aec>] (dump_backtrace) from [<81836be8>] (show_stack+0x18/0x1c arch/arm/kernel/traps.c:256) r7:00000000 r6:00000013 r5:60000093 r4:81fbd378 [<81836bd0>] (show_stack) from [<81854104>] (__dump_stack lib/dump_stack.c:88 [inline]) [<81836bd0>] (show_stack) from [<81854104>] (dump_stack_lvl+0x48/0x54 lib/dump_stack.c:106) [<818540bc>] (dump_stack_lvl) from [<81854128>] (dump_stack+0x18/0x1c lib/dump_stack.c:113) r5:00000001 r4:00000001 [<81854110>] (dump_stack) from [<81823f18>] (nmi_cpu_backtrace+0x160/0x17c lib/nmi_backtrace.c:113) [<81823db8>] (nmi_cpu_backtrace) from [<81824064>] (nmi_trigger_cpumask_backtrace+0x130/0x1d8 lib/nmi_backtrace.c:62) r7:00000001 r6:8260c494 r5:8261a7d8 r4:ffffffff [<81823f34>] (nmi_trigger_cpumask_backtrace) from [<80210574>] (arch_trigger_cpumask_backtrace+0x18/0x1c arch/arm/kernel/smp.c:851) r9:827d8c5f r8:82895eb8 r7:8260c5ec r6:00007f17 r5:8261adc8 r4:8526f92c [<8021055c>] (arch_trigger_cpumask_backtrace) from [<80347eb4>] (trigger_all_cpu_backtrace include/linux/nmi.h:160 [inline]) [<8021055c>] (arch_trigger_cpumask_backtrace) from [<80347eb4>] (check_hung_uninterruptible_tasks kernel/hung_task.c:222 [inline]) [<8021055c>] (arch_trigger_cpumask_backtrace) from [<80347eb4>] (watchdog+0x48c/0x59c kernel/hung_task.c:379) [<80347a28>] (watchdog) from [<8026e84c>] (kthread+0x104/0x134 kernel/kthread.c:388) r10:00000000 r9:df819e58 r8:82f236c0 r7:00000000 r6:80347a28 r5:82e58c00 r4:82ec7700 [<8026e748>] (kthread) from [<80200104>] (ret_from_fork+0x14/0x30 arch/arm/kernel/entry-common.S:134) Exception stack(0xdf8ddfb0 to 0xdf8ddff8) 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 r5:8026e748 r4:82ec7700 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 2992 Comm: syz-executor.1 Not tainted 6.8.0-rc5-syzkaller #0 Hardware name: ARM-Versatile Express PC is at raw_copy_from_user arch/arm/include/asm/uaccess.h:509 [inline] PC is at _copy_from_user include/linux/uaccess.h:149 [inline] PC is at copy_from_user include/linux/uaccess.h:183 [inline] PC is at __get_old_timespec32 kernel/time/time.c:920 [inline] PC is at get_old_timespec32+0x70/0xd0 kernel/time/time.c:954 LR is at 0x840db000 pc : [<802f2328>] lr : [<840db000>] psr: 80000013 sp : df995f40 ip : 00000000 fp : df995f64 r10: 00000109 r9 : 840db000 r8 : 7ee16534 r7 : 840db000 r6 : 00000000 r5 : 7ee1653c r4 : df995f68 r3 : 7efffff8 r2 : 00000000 r1 : 00000001 r0 : 00000000 Flags: Nzcv IRQs on FIQs on Mode SVC_32 ISA ARM Segment user Control: 30c5387d Table: 84625780 DAC: fffffffd Backtrace: [<802f22b8>] (get_old_timespec32) from [<803059bc>] (__do_sys_clock_nanosleep_time32 kernel/time/posix-timers.c:1413 [inline]) [<802f22b8>] (get_old_timespec32) from [<803059bc>] (sys_clock_nanosleep_time32+0x8c/0x158 kernel/time/posix-timers.c:1401) r5:81a04e38 r4:00000000 [<80305930>] (sys_clock_nanosleep_time32) from [<80200060>] (ret_fast_syscall+0x0/0x1c arch/arm/mm/proc-v7.S:66) Exception stack(0xdf995fa8 to 0xdf995ff0) 5fa0: 00000000 7ee16534 00000000 00000000 7ee1653c 7ee16534 5fc0: 00000000 7ee16534 00000000 00000109 00000000 00000000 7ee16670 00000a95 5fe0: 00000000 7ee16530 00000001 0007ad18 r8:80200288 r7:00000109 r6:00000000 r5:7ee16534 r4:00000000