INFO: task kworker/0:82:9161 blocked for more than 430 seconds. Not tainted 6.11.0-rc6-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/0:82 state:D stack:0 pid:9161 tgid:9161 ppid:2 flags:0x00000000 Workqueue: events bpf_prog_free_deferred Call trace: [<8197ecc8>] (__schedule) from [<8197f860>] (__schedule_loop kernel/sched/core.c:6606 [inline]) [<8197ecc8>] (__schedule) from [<8197f860>] (schedule+0x2c/0xfc kernel/sched/core.c:6621) r10:8260ca7c r9:00000000 r8:82714ab8 r7:00000002 r6:e035dda4 r5:83ee5400 r4:83ee5400 [<8197f834>] (schedule) from [<8197fc14>] (schedule_preempt_disabled+0x18/0x24 kernel/sched/core.c:6678) r5:83ee5400 r4:82714ab4 [<8197fbfc>] (schedule_preempt_disabled) from [<819826ec>] (__mutex_lock_common kernel/locking/mutex.c:684 [inline]) [<8197fbfc>] (schedule_preempt_disabled) from [<819826ec>] (__mutex_lock.constprop.0+0x2e8/0xae0 kernel/locking/mutex.c:752) [<81982404>] (__mutex_lock.constprop.0) from [<81982fb8>] (__mutex_lock_slowpath+0x14/0x18 kernel/locking/mutex.c:1040) r10:8260ca7c r9:00000001 r8:00000000 r7:ffffffff r6:00000000 r5:e035de20 r4:00000000 [<81982fa4>] (__mutex_lock_slowpath) from [<81982ff8>] (mutex_lock+0x3c/0x40 kernel/locking/mutex.c:286) [<81982fbc>] (mutex_lock) from [<804a6490>] (_vm_unmap_aliases+0x68/0x240 mm/vmalloc.c:2846) [<804a6428>] (_vm_unmap_aliases) from [<804aa1e8>] (vm_reset_perms mm/vmalloc.c:3275 [inline]) [<804a6428>] (_vm_unmap_aliases) from [<804aa1e8>] (vfree+0x170/0x1e4 mm/vmalloc.c:3354) r10:82c16005 r9:00000001 r8:00000000 r7:ffffffff r6:00000000 r5:85351cc0 r4:00000000 [<804aa078>] (vfree) from [<80501a18>] (execmem_free+0x30/0x64 mm/execmem.c:69) r9:83ee5400 r8:00800000 r7:00000000 r6:82c16000 r5:00001000 r4:7f26a000 [<805019e8>] (execmem_free) from [<80393a3c>] (bpf_jit_free_exec+0x10/0x14 kernel/bpf/core.c:1072) r5:00001000 r4:e03b5000 [<80393a2c>] (bpf_jit_free_exec) from [<80393e1c>] (bpf_jit_binary_free kernel/bpf/core.c:1118 [inline]) [<80393a2c>] (bpf_jit_free_exec) from [<80393e1c>] (bpf_jit_free+0x68/0xe4 kernel/bpf/core.c:1241) [<80393db4>] (bpf_jit_free) from [<80394f58>] (bpf_prog_free_deferred+0x14c/0x164 kernel/bpf/core.c:2800) r5:85639354 r4:85639000 [<80394e0c>] (bpf_prog_free_deferred) from [<80265f08>] (process_one_work+0x1b4/0x4f4 kernel/workqueue.c:3231) r7:dddd0000 r6:82c16000 r5:85639354 r4:85353e80 [<80265d54>] (process_one_work) from [<80266aec>] (process_scheduled_works kernel/workqueue.c:3312 [inline]) [<80265d54>] (process_one_work) from [<80266aec>] (worker_thread+0x1ec/0x3b4 kernel/workqueue.c:3389) r10:83ee5400 r9:85353eac r8:61c88647 r7:dddd0020 r6:82604d40 r5:dddd0000 r4:85353e80 [<80266900>] (worker_thread) from [<8026fb04>] (kthread+0x104/0x134 kernel/kthread.c:389) r10:00000000 r9:e0301e78 r8:85345bc0 r7:85353e80 r6:80266900 r5:83ee5400 r4:8589d400 [<8026fa00>] (kthread) from [<80200114>] (ret_from_fork+0x14/0x20 arch/arm/kernel/entry-common.S:137) Exception stack(0xe035dfb0 to 0xe035dff8) 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 r5:8026fa00 r4:8589d400 NMI backtrace for cpu 1 CPU: 1 UID: 0 PID: 32 Comm: khungtaskd Not tainted 6.11.0-rc6-syzkaller #0 Hardware name: ARM-Versatile Express Call trace: [<8195d0e0>] (dump_backtrace) from [<8195d1dc>] (show_stack+0x18/0x1c arch/arm/kernel/traps.c:257) r7:00000000 r6:00000113 r5:60000193 r4:8200ca8c [<8195d1c4>] (show_stack) from [<8197af1c>] (__dump_stack lib/dump_stack.c:93 [inline]) [<8195d1c4>] (show_stack) from [<8197af1c>] (dump_stack_lvl+0x70/0x7c lib/dump_stack.c:119) [<8197aeac>] (dump_stack_lvl) from [<8197af40>] (dump_stack+0x18/0x1c lib/dump_stack.c:128) r5:00000001 r4:00000001 [<8197af28>] (dump_stack) from [<8194a3d0>] (nmi_cpu_backtrace+0x160/0x17c lib/nmi_backtrace.c:113) [<8194a270>] (nmi_cpu_backtrace) from [<8194a51c>] (nmi_trigger_cpumask_backtrace+0x130/0x1d8 lib/nmi_backtrace.c:62) r7:00000001 r6:8260c5d0 r5:8261a88c r4:ffffffff [<8194a3ec>] (nmi_trigger_cpumask_backtrace) from [<802103c8>] (arch_trigger_cpumask_backtrace+0x18/0x1c arch/arm/kernel/smp.c:851) r9:00015ec2 r8:828b3130 r7:8260c734 r6:00007d43 r5:8261ae48 r4:85a27c1c [<802103b0>] (arch_trigger_cpumask_backtrace) from [<80350e30>] (trigger_all_cpu_backtrace include/linux/nmi.h:162 [inline]) [<802103b0>] (arch_trigger_cpumask_backtrace) from [<80350e30>] (check_hung_uninterruptible_tasks kernel/hung_task.c:223 [inline]) [<802103b0>] (arch_trigger_cpumask_backtrace) from [<80350e30>] (watchdog+0x498/0x5b8 kernel/hung_task.c:379) [<80350998>] (watchdog) from [<8026fb04>] (kthread+0x104/0x134 kernel/kthread.c:389) r10:00000000 r9:df819e58 r8:82f23880 r7:00000000 r6:80350998 r5:82e59800 r4:82ec6840 [<8026fa00>] (kthread) from [<80200114>] (ret_from_fork+0x14/0x20 arch/arm/kernel/entry-common.S:137) Exception stack(0xdf8e1fb0 to 0xdf8e1ff8) 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 r5:8026fa00 r4:82ec6840 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 UID: 0 PID: 3104 Comm: sshd Not tainted 6.11.0-rc6-syzkaller #0 Hardware name: ARM-Versatile Express PC is at sock_write_iter+0x0/0xfc net/socket.c:1144 LR is at new_sync_write fs/read_write.c:497 [inline] LR is at vfs_write+0x3a8/0x44c fs/read_write.c:590 pc : [<81450150>] lr : [<80508088>] psr: 60000013 sp : df971ed8 ip : df971f30 fp : df971f64 r10: 81c47140 r9 : 01cc0888 r8 : 00000000 r7 : 83639800 r6 : 000000c4 r5 : 836ad600 r4 : 00000000 r3 : 00000001 r2 : 81450150 r1 : df971ef0 r0 : df971f08 Flags: nZCv IRQs on FIQs on Mode SVC_32 ISA ARM Segment user Control: 30c5387d Table: 84097600 DAC: fffffffd Call trace: [<80507ce0>] (vfs_write) from [<805082fc>] (ksys_write+0xc4/0xf8 fs/read_write.c:643) r10:00000004 r9:83639800 r8:8020029c r7:000000c4 r6:01cc0888 r5:836ad600 r4:836ad600 [<80508238>] (ksys_write) from [<80508340>] (__do_sys_write fs/read_write.c:655 [inline]) [<80508238>] (ksys_write) from [<80508340>] (sys_write+0x10/0x14 fs/read_write.c:652) r7:00000004 r6:000004ae r5:76fc4c80 r4:01c92d88 [<80508330>] (sys_write) from [<80200060>] (ret_fast_syscall+0x0/0x1c arch/arm/mm/proc-v7.S:67) Exception stack(0xdf971fa8 to 0xdf971ff0) 1fa0: 01c92d88 76fc4c80 00000004 01cc0888 000000c4 00000000 1fc0: 01c92d88 76fc4c80 000004ae 00000004 00000001 7ec381fc 7ec3827c 00000000 1fe0: 00500db0 7ec38180 00483adc 76bbb39c