INFO: task syz.0.826:7215 blocked for more than 430 seconds. Tainted: G L syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz.0.826 state:D stack:0 pid:7215 tgid:7214 ppid:3092 task_flags:0x400140 flags:0x00000001 Call trace: [<81aea94c>] (__schedule) from [<81aebd60>] (__schedule_loop kernel/sched/core.c:6993 [inline]) [<81aea94c>] (__schedule) from [<81aebd60>] (schedule+0x2c/0x134 kernel/sched/core.c:7008) r10:862fb900 r9:862fb880 r8:84143200 r7:84d98608 r6:ea501cc0 r5:ea501c70 r4:840524c0 [<81aebd34>] (schedule) from [<807694f4>] (request_wait_answer fs/fuse/dev.c:585 [inline]) [<81aebd34>] (schedule) from [<807694f4>] (__fuse_request_send fs/fuse/dev.c:599 [inline]) [<81aebd34>] (schedule) from [<807694f4>] (__fuse_simple_request+0x398/0x4f4 fs/fuse/dev.c:693) r5:ea501c70 r4:84d985b0 [<8076915c>] (__fuse_simple_request) from [<80774030>] (fuse_simple_request fs/fuse/fuse_i.h:1263 [inline]) [<8076915c>] (__fuse_simple_request) from [<80774030>] (fuse_send_open fs/fuse/file.c:52 [inline]) [<8076915c>] (__fuse_simple_request) from [<80774030>] (fuse_file_open+0x188/0x23c fs/fuse/file.c:158) r8:84143200 r7:00000000 r6:00000000 r5:00000001 r4:86ce8a00 [<80773ea8>] (fuse_file_open) from [<80774240>] (fuse_do_open fs/fuse/file.c:188 [inline]) [<80773ea8>] (fuse_file_open) from [<80774240>] (fuse_open+0x84/0x2fc fs/fuse/file.c:277) r10:ea501f18 r9:86ce8a00 r8:00000000 r7:838e3480 r6:00000000 r5:00000000 r4:837f9680 [<807741bc>] (fuse_open) from [<805709b8>] (do_dentry_open+0x138/0x508 fs/open.c:949) r10:ea501f18 r9:838e3480 r8:838e34a8 r7:807741bc r6:837f9680 r5:00000000 r4:838e3480 [<80570880>] (do_dentry_open) from [<80572520>] (vfs_open+0x2c/0xe8 fs/open.c:1081) r9:838e3480 r8:ea501e50 r7:837db220 r6:838e34a8 r5:82920874 r4:838e3480 [<805724f4>] (vfs_open) from [<8058caa8>] (do_open fs/namei.c:4677 [inline]) [<805724f4>] (vfs_open) from [<8058caa8>] (path_openat+0x7e0/0x1214 fs/namei.c:4836) r6:00000000 r5:82920874 r4:00000040 [<8058c2c8>] (path_openat) from [<8058d594>] (do_file_open+0xb8/0x150 fs/namei.c:4865) r10:00000142 r9:840524c0 r8:00000001 r7:ffffff9c r6:ea501f18 r5:840524c0 r4:8330c6c0 [<8058d4dc>] (do_file_open) from [<805729b8>] (do_sys_openat2+0x8c/0xf0 fs/open.c:1366) r8:8020029c r7:2000c380 r6:ffffff9c r5:8330c6c0 r4:0000000c [<8057292c>] (do_sys_openat2) from [<80572d94>] (do_sys_open fs/open.c:1372 [inline]) [<8057292c>] (do_sys_openat2) from [<80572d94>] (__do_sys_openat fs/open.c:1388 [inline]) [<8057292c>] (do_sys_openat2) from [<80572d94>] (sys_openat+0x80/0xd0 fs/open.c:1383) r7:00000142 r6:00000000 r5:2000c380 r4:ffffff9c [<80572d14>] (sys_openat) from [<80200060>] (ret_fast_syscall+0x0/0x1c arch/arm/mm/proc-v7.S:67) Exception stack(0xea501fa8 to 0xea501ff0) 1fa0: 00000000 00000000 ffffff9c 2000c380 00000040 0000010c 1fc0: 00000000 00000000 00346314 00000142 003462d8 00000000 00000001 76f070dc 1fe0: 76f06e88 76f06e78 00018bc4 00130300 r6:00346314 r5:00000000 r4:00000000 INFO: task syz.0.826:7218 blocked for more than 430 seconds. Tainted: G L syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz.0.826 state:D stack:0 pid:7218 tgid:7214 ppid:3092 task_flags:0x400040 flags:0x00000005 Call trace: [<81aea94c>] (__schedule) from [<81aebd60>] (__schedule_loop kernel/sched/core.c:6993 [inline]) [<81aea94c>] (__schedule) from [<81aebd60>] (schedule+0x2c/0x134 kernel/sched/core.c:7008) r10:85f48000 r9:85be6e40 r8:84143200 r7:84d984b8 r6:e8459ea8 r5:e8459e50 r4:85be6e40 [<81aebd34>] (schedule) from [<807694f4>] (request_wait_answer fs/fuse/dev.c:585 [inline]) [<81aebd34>] (schedule) from [<807694f4>] (__fuse_request_send fs/fuse/dev.c:599 [inline]) [<81aebd34>] (schedule) from [<807694f4>] (__fuse_simple_request+0x398/0x4f4 fs/fuse/dev.c:693) r5:e8459e50 r4:84d98460 [<8076915c>] (__fuse_simple_request) from [<80774bd4>] (fuse_simple_request fs/fuse/fuse_i.h:1263 [inline]) [<8076915c>] (__fuse_simple_request) from [<80774bd4>] (fuse_flush+0x178/0x1b4 fs/fuse/file.c:494) r8:862fbf00 r7:86ce8a00 r6:85a11700 r5:837f9680 r4:85f48000 [<80774a5c>] (fuse_flush) from [<80570154>] (filp_flush+0x38/0x88 fs/open.c:1469) r8:85a11740 r7:87262fc0 r6:000000ff r5:85a11700 r4:85f48000 [<8057011c>] (filp_flush) from [<805701b8>] (filp_close+0x14/0x28 fs/open.c:1482) r7:87262fc0 r6:000000ff r5:85f48000 r4:85a11700 [<805701a4>] (filp_close) from [<805a1a38>] (__range_close fs/file.c:794 [inline]) [<805701a4>] (filp_close) from [<805a1a38>] (__do_sys_close_range fs/file.c:855 [inline]) [<805701a4>] (filp_close) from [<805a1a38>] (sys_close_range+0x18c/0x224 fs/file.c:819) r5:0000000d r4:85a11700 [<805a18ac>] (sys_close_range) from [<80200060>] (ret_fast_syscall+0x0/0x1c arch/arm/mm/proc-v7.S:67) Exception stack(0xe8459fa8 to 0xe8459ff0) 9fa0: 00000000 00000000 00000003 ffffffff 00000000 00000000 9fc0: 00000000 00000000 00346450 000001b4 00346418 00000000 00000001 76ec50dc 9fe0: 76ec4e88 76ec4e78 00018bc4 00130300 r10:000001b4 r9:85be6e40 r8:8020029c r7:000001b4 r6:00346450 r5:00000000 r4:00000000 NMI backtrace for cpu 0 CPU: 0 UID: 0 PID: 29 Comm: khungtaskd Tainted: G L syzkaller #0 PREEMPT Tainted: [L]=SOFTLOCKUP Hardware name: ARM-Versatile Express Call trace: [<80201a14>] (dump_backtrace) from [<80201b08>] (show_stack+0x18/0x1c arch/arm/kernel/traps.c:257) r7:60000093 r6:60000093 r5:822a8908 r4:00000000 [<80201af0>] (show_stack) from [<8021e410>] (__dump_stack lib/dump_stack.c:94 [inline]) [<80201af0>] (show_stack) from [<8021e410>] (dump_stack_lvl+0x5c/0x70 lib/dump_stack.c:120) [<8021e3b4>] (dump_stack_lvl) from [<8021e43c>] (dump_stack+0x18/0x1c lib/dump_stack.c:129) r7:00000000 r6:00000013 r5:00000000 r4:00000001 [<8021e424>] (dump_stack) from [<81ad437c>] (nmi_cpu_backtrace+0x150/0x170 lib/nmi_backtrace.c:113) [<81ad422c>] (nmi_cpu_backtrace) from [<81ad44cc>] (nmi_trigger_cpumask_backtrace+0x130/0x1d8 lib/nmi_backtrace.c:62) r7:00000000 r6:8280c550 r5:8281afb8 r4:ffffffff [<81ad439c>] (nmi_trigger_cpumask_backtrace) from [<8022f124>] (arch_trigger_cpumask_backtrace+0x18/0x1c arch/arm/kernel/smp.c:852) r9:82ac7834 r8:8280c6d8 r7:00015540 r6:85be7628 r5:82804d80 r4:00000048 [<8022f10c>] (arch_trigger_cpumask_backtrace) from [<81adbfbc>] (trigger_all_cpu_backtrace include/linux/nmi.h:161 [inline]) [<8022f10c>] (arch_trigger_cpumask_backtrace) from [<81adbfbc>] (__sys_info lib/sys_info.c:157 [inline]) [<8022f10c>] (arch_trigger_cpumask_backtrace) from [<81adbfbc>] (sys_info+0x68/0xa8 lib/sys_info.c:165) [<81adbf54>] (sys_info) from [<80385260>] (check_hung_uninterruptible_tasks kernel/hung_task.c:346 [inline]) [<81adbf54>] (sys_info) from [<80385260>] (watchdog+0x59c/0x8d8 kernel/hung_task.c:515) r5:82804d80 r4:839aaf14 [<80384cc4>] (watchdog) from [<802814a4>] (kthread+0x11c/0x154 kernel/kthread.c:436) r10:00000000 r9:df819e60 r8:83385880 r7:00000000 r6:80384cc4 r5:833d0c40 r4:8332a680 [<80281388>] (kthread) from [<80200114>] (ret_from_fork+0x14/0x20 arch/arm/kernel/entry-common.S:137) Exception stack(0xdf8d5fb0 to 0xdf8d5ff8) 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 r5:80281388 r4:8332a680 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 UID: 0 PID: 12 Comm: kworker/u8:0 Tainted: G L syzkaller #0 PREEMPT Tainted: [L]=SOFTLOCKUP Hardware name: ARM-Versatile Express Workqueue: events_power_efficient wg_ratelimiter_gc_entries PC is at preempt_count_add+0x34/0x150 kernel/sched/core.c:5761 LR is at __raw_spin_lock include/linux/spinlock_api_smp.h:157 [inline] LR is at _raw_spin_lock+0x18/0x58 kernel/locking/spinlock.c:154 pc : [<8028d8d4>] lr : [<81af4f24>] psr: 600e0013 sp : df849e78 ip : df849ea0 fp : df849e9c r10: 3b9aca00 r9 : 80d6aeb8 r8 : 00000111 r7 : 8297d09c r6 : 81af4f24 r5 : 00000001 r4 : 8318bd40 r3 : 00000000 r2 : 00000d0a r1 : 00000000 r0 : 00000001 Flags: nZCv IRQs on FIQs on Mode SVC_32 ISA ARM Segment none Control: 30c5387d Table: 84d619c0 DAC: 00000000 Call trace: [<8028d8a0>] (preempt_count_add) from [<81af4f24>] (__raw_spin_lock include/linux/spinlock_api_smp.h:157 [inline]) [<8028d8a0>] (preempt_count_add) from [<81af4f24>] (_raw_spin_lock+0x18/0x58 kernel/locking/spinlock.c:154) r6:00000000 r5:4463fc89 r4:82b28284 [<81af4f0c>] (_raw_spin_lock) from [<80d6acc8>] (spin_lock include/linux/spinlock.h:341 [inline]) [<81af4f0c>] (_raw_spin_lock) from [<80d6acc8>] (wg_ratelimiter_gc_entries+0x60/0x250 drivers/net/wireguard/ratelimiter.c:63) r5:4463fc89 r4:83015480 [<80d6ac68>] (wg_ratelimiter_gc_entries) from [<802766b8>] (process_one_work+0x1c8/0x59c kernel/workqueue.c:3276) r10:83029215 r9:8318bd40 r8:02000000 r7:83012a00 r6:83029200 r5:8297d09c r4:83015480 [<802764f0>] (process_one_work) from [<80277478>] (process_scheduled_works kernel/workqueue.c:3359 [inline]) [<802764f0>] (process_one_work) from [<80277478>] (worker_thread+0x16c/0x318 kernel/workqueue.c:3440) r10:83012a00 r9:830154b0 r8:8318bd40 r7:82804d80 r6:83012a20 r5:83012a00 r4:83015480 [<8027730c>] (worker_thread) from [<802814a4>] (kthread+0x11c/0x154 kernel/kthread.c:436) r10:00000000 r9:df819e50 r8:83015400 r7:83015480 r6:8027730c r5:8318bd40 r4:830f5740 [<80281388>] (kthread) from [<80200114>] (ret_from_fork+0x14/0x20 arch/arm/kernel/entry-common.S:137) Exception stack(0xdf849fb0 to 0xdf849ff8) 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 r5:80281388 r4:830f5740