INFO: task syz-executor.1:31228 blocked for more than 430 seconds. Not tainted 5.19.0-rc5-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.1 state:D stack: 0 pid:31228 ppid: 2233 flags:0x00000001 Backtrace: [<81710ce8>] (__schedule) from [<81711770>] (schedule+0x54/0xbc kernel/sched/core.c:6530) r10:5ac3c35a r9:84eb0000 r8:dfa61dbc r7:00000002 r6:824f2780 r5:824f2888 r4:840e8bc0 [<8171171c>] (schedule) from [<802ce0d4>] (synchronize_rcu_expedited+0x20c/0x354 kernel/rcu/tree_exp.h:942) r5:824f2888 r4:00009830 [<802cdec8>] (synchronize_rcu_expedited) from [<802ce280>] (synchronize_rcu+0x64/0x90 kernel/rcu/tree.c:3843) r8:8cc20400 r7:849d1680 r6:82714598 r5:847fc000 r4:8cc00000 [<802ce21c>] (synchronize_rcu) from [<815d1140>] (isotp_release+0x220/0x2dc net/can/isotp.c:1187) [<815d0f20>] (isotp_release) from [<8127f69c>] (__sock_release+0x48/0xc0 net/socket.c:650) r9:7efffd08 r8:828a8790 r7:84ae4dd0 r6:00000000 r5:849d1788 r4:849d1680 [<8127f654>] (__sock_release) from [<8127f72c>] (sock_close+0x18/0x20 net/socket.c:1365) r7:84ae4dd0 r6:849d1700 r5:002e0003 r4:85489c00 [<8127f714>] (sock_close) from [<8049bc90>] (__fput+0x84/0x258 fs/file_table.c:317) [<8049bc0c>] (__fput) from [<8049bee0>] (____fput+0x10/0x14 fs/file_table.c:350) r9:7efffd08 r8:840e9414 r7:826435d8 r6:840e8bc0 r5:840e93e4 r4:00000000 [<8049bed0>] (____fput) from [<80266f80>] (task_work_run+0x8c/0xb8 kernel/task_work.c:177) [<80266ef4>] (task_work_run) from [<8020bfec>] (resume_user_mode_work include/linux/resume_user_mode.h:49 [inline]) [<80266ef4>] (task_work_run) from [<8020bfec>] (do_work_pending+0x430/0x51c arch/arm/kernel/signal.c:630) r9:7efffd08 r8:80200288 r7:fffffe30 r6:80200288 r5:dfa61fb0 r4:840e8bc0 [<8020bbbc>] (do_work_pending) from [<80200088>] (slow_work_pending+0xc/0x20) Exception stack(0xdfa61fb0 to 0xdfa61ff8) 1fa0: ffffffba 200001c0 20000002 00000000 1fc0: 00000000 00000000 0012bfc8 00000128 7ef322c2 76fb36d0 7ef32454 76fb320c 1fe0: 76fb3020 76fb3010 000163a0 0004bf90 60000010 00000003 r10:00000128 r9:840e8bc0 r8:80200288 r7:00000128 r6:0012bfc8 r5:00000000 r4:00000000 INFO: task syz-executor.0:31232 blocked for more than 430 seconds. Not tainted 5.19.0-rc5-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.0 state:D stack: 0 pid:31232 ppid: 2232 flags:0x00000001 Backtrace: [<81710ce8>] (__schedule) from [<81711770>] (schedule+0x54/0xbc kernel/sched/core.c:6530) r10:5ac3c35a r9:8240c494 r8:824f2998 r7:dfa5dd44 r6:00000002 r5:843fbac0 r4:843fbac0 [<8171171c>] (schedule) from [<81711d6c>] (schedule_preempt_disabled+0x18/0x24 kernel/sched/core.c:6589) r5:843fbac0 r4:824f2994 [<81711d54>] (schedule_preempt_disabled) from [<81713b2c>] (__mutex_lock_common kernel/locking/mutex.c:679 [inline]) [<81711d54>] (schedule_preempt_disabled) from [<81713b2c>] (__mutex_lock.constprop.0+0x198/0xaf4 kernel/locking/mutex.c:747) [<81713994>] (__mutex_lock.constprop.0) from [<8171455c>] (__mutex_lock_slowpath+0x14/0x18 kernel/locking/mutex.c:1035) r10:5ac3c35a r9:84ee8000 r8:824f2880 r7:00000002 r6:824f2780 r5:00000000 r4:00009834 [<81714548>] (__mutex_lock_slowpath) from [<8171459c>] (mutex_lock+0x3c/0x40 kernel/locking/mutex.c:286) [<81714560>] (mutex_lock) from [<802cdfcc>] (exp_funnel_lock kernel/rcu/tree_exp.h:322 [inline]) [<81714560>] (mutex_lock) from [<802cdfcc>] (synchronize_rcu_expedited+0x104/0x354 kernel/rcu/tree_exp.h:927) [<802cdec8>] (synchronize_rcu_expedited) from [<802ce280>] (synchronize_rcu+0x64/0x90 kernel/rcu/tree.c:3843) r8:8cd20400 r7:849d0c80 r6:82714598 r5:845f8000 r4:8cd00000 [<802ce21c>] (synchronize_rcu) from [<815d1140>] (isotp_release+0x220/0x2dc net/can/isotp.c:1187) [<815d0f20>] (isotp_release) from [<8127f69c>] (__sock_release+0x48/0xc0 net/socket.c:650) r9:7efffd08 r8:828a8790 r7:84ae4220 r6:00000000 r5:849d0d88 r4:849d0c80 [<8127f654>] (__sock_release) from [<8127f72c>] (sock_close+0x18/0x20 net/socket.c:1365) r7:84ae4220 r6:849d0d00 r5:002e0003 r4:85489780 [<8127f714>] (sock_close) from [<8049bc90>] (__fput+0x84/0x258 fs/file_table.c:317) [<8049bc0c>] (__fput) from [<8049bee0>] (____fput+0x10/0x14 fs/file_table.c:350) r9:7efffd08 r8:843fc314 r7:826435d8 r6:843fbac0 r5:843fc2e4 r4:00000000 [<8049bed0>] (____fput) from [<80266f80>] (task_work_run+0x8c/0xb8 kernel/task_work.c:177) [<80266ef4>] (task_work_run) from [<8020bfec>] (resume_user_mode_work include/linux/resume_user_mode.h:49 [inline]) [<80266ef4>] (task_work_run) from [<8020bfec>] (do_work_pending+0x430/0x51c arch/arm/kernel/signal.c:630) r9:7efffd08 r8:80200288 r7:fffffe30 r6:80200288 r5:dfa5dfb0 r4:843fbac0 [<8020bbbc>] (do_work_pending) from [<80200088>] (slow_work_pending+0xc/0x20) Exception stack(0xdfa5dfb0 to 0xdfa5dff8) dfa0: 00000000 00000002 00000000 00000003 dfc0: 00000004 024154c0 0012bf9c 00000006 00000000 0012bf90 001316c8 00000000 dfe0: 2f260000 7e9422f8 000293b8 00029874 80000010 00000003 r10:00000006 r9:843fbac0 r8:80200288 r7:00000006 r6:0012bf9c r5:024154c0 r4:00000004 NMI backtrace for cpu 1 CPU: 1 PID: 26 Comm: khungtaskd Not tainted 5.19.0-rc5-syzkaller #0 Hardware name: ARM-Versatile Express Backtrace: [<816f2f00>] (dump_backtrace) from [<816f3230>] (show_stack+0x18/0x1c arch/arm/kernel/traps.c:253) r7:00000001 r6:00000000 r5:60000193 r4:81d802b4 [<816f3218>] (show_stack) from [<816fbb5c>] (__dump_stack lib/dump_stack.c:88 [inline]) [<816f3218>] (show_stack) from [<816fbb5c>] (dump_stack_lvl+0x48/0x54 lib/dump_stack.c:106) [<816fbb14>] (dump_stack_lvl) from [<816fbb80>] (dump_stack+0x18/0x1c lib/dump_stack.c:113) r5:00000113 r4:00000001 [<816fbb68>] (dump_stack) from [<8081f4ec>] (nmi_cpu_backtrace+0x114/0x180 lib/nmi_backtrace.c:111) [<8081f3d8>] (nmi_cpu_backtrace) from [<8081f688>] (nmi_trigger_cpumask_backtrace+0x130/0x1d0 lib/nmi_backtrace.c:62) r7:00000001 r6:8240c494 r5:8240ccd4 r4:00000000 [<8081f558>] (nmi_trigger_cpumask_backtrace) from [<802110bc>] (arch_trigger_cpumask_backtrace+0x18/0x1c arch/arm/kernel/smp.c:863) r9:00082040 r8:82404d40 r7:00007f64 r6:8268995c r5:8240c5fc r4:836ef240 [<802110a4>] (arch_trigger_cpumask_backtrace) from [<8032d39c>] (trigger_all_cpu_backtrace include/linux/nmi.h:146 [inline]) [<802110a4>] (arch_trigger_cpumask_backtrace) from [<8032d39c>] (check_hung_uninterruptible_tasks kernel/hung_task.c:212 [inline]) [<802110a4>] (arch_trigger_cpumask_backtrace) from [<8032d39c>] (watchdog+0x4a0/0x58c kernel/hung_task.c:369) [<8032cefc>] (watchdog) from [<8026a94c>] (kthread+0xf0/0x120 kernel/kthread.c:376) r10:00000000 r9:df819e4c r8:82a19ac0 r7:00000000 r6:8032cefc r5:828f4680 r4:82ad9300 [<8026a85c>] (kthread) from [<80200100>] (ret_from_fork+0x14/0x34 arch/arm/kernel/entry-common.S:148) Exception stack(0xdf8c9fb0 to 0xdf8c9ff8) 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 r5:8026a85c r4:82ad9300 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 2222 Comm: syz-fuzzer Not tainted 5.19.0-rc5-syzkaller #0 Hardware name: ARM-Versatile Express PC is at _end+0x7d8d63b8/0x7d8d63ec LR is at 0x12338 pc : [] lr : [<00012338>] psr: 20000010 sp : 01435f4c ip : 000015f9 fp : 00000005 r10: 014002d0 r9 : 00000000 r8 : 00000005 r7 : 000000a2 r6 : 01428000 r5 : 01426000 r4 : 00000000 r3 : 00000000 r2 : 00a000e8 r1 : 00000001 r0 : 00000000 Flags: nzCv IRQs on FIQs on Mode USER_32 ISA ARM Segment user Control: 30c5387d Table: 8436c1c0 DAC: fffffffd CPU: 0 PID: 2222 Comm: syz-fuzzer Not tainted 5.19.0-rc5-syzkaller #0 Hardware name: ARM-Versatile Express Backtrace: frame pointer underflow [<816f2f00>] (dump_backtrace) from [<816f3230>] (show_stack+0x18/0x1c arch/arm/kernel/traps.c:253) r7:00000017 r6:df955fb0 r5:60000193 r4:81d802b4 [<816f3218>] (show_stack) from [<816fbb5c>] (__dump_stack lib/dump_stack.c:88 [inline]) [<816f3218>] (show_stack) from [<816fbb5c>] (dump_stack_lvl+0x48/0x54 lib/dump_stack.c:106) [<816fbb14>] (dump_stack_lvl) from [<816fbb80>] (dump_stack+0x18/0x1c lib/dump_stack.c:113) r5:00000193 r4:00000000 [<816fbb68>] (dump_stack) from [<80209124>] (show_regs+0x14/0x18 arch/arm/kernel/process.c:204) [<80209110>] (show_regs) from [<8081f4d4>] (nmi_cpu_backtrace+0xfc/0x180 lib/nmi_backtrace.c:109) [<8081f3d8>] (nmi_cpu_backtrace) from [<8021020c>] (do_handle_IPI+0x4c/0x3b4 arch/arm/kernel/smp.c:678) r7:00000017 r6:00000000 r5:8280cc40 r4:00000007 [<802101c0>] (do_handle_IPI) from [<80210594>] (ipi_handler+0x20/0x28 arch/arm/kernel/smp.c:706) r9:00000000 r8:df801f78 r7:00000017 r6:8190d744 r5:8280cc40 r4:82887d00 [<80210574>] (ipi_handler) from [<802b9d64>] (handle_percpu_devid_irq+0x9c/0x2d4 kernel/irq/chip.c:928) [<802b9cc8>] (handle_percpu_devid_irq) from [<802b3670>] (generic_handle_irq_desc include/linux/irqdesc.h:158 [inline]) [<802b9cc8>] (handle_percpu_devid_irq) from [<802b3670>] (handle_irq_desc kernel/irq/irqdesc.c:648 [inline]) [<802b9cc8>] (handle_percpu_devid_irq) from [<802b3670>] (generic_handle_domain_irq+0x30/0x40 kernel/irq/irqdesc.c:704) r10:014002d0 r9:00000000 r8:00000000 r7:df80a00c r6:822a81b0 r5:df80a000 r4:8240ccec r3:00010000 [<802b3640>] (generic_handle_domain_irq) from [<80831408>] (gic_handle_irq+0x68/0x7c drivers/irqchip/irq-gic.c:372) [<808313a0>] (gic_handle_irq) from [<8170ecec>] (generic_handle_arch_irq+0x60/0x80 kernel/irq/handle.c:238) r7:df955fb0 r6:81f2f9e4 r5:81f2f9fc r4:822a81a4 [<8170ec8c>] (generic_handle_arch_irq) from [<808127e4>] (call_with_stack+0x1c/0x20 arch/arm/lib/call_with_stack.S:40) r9:00000000 r8:822a1044 r7:834abac0 r6:ffffffff r5:20000010 r4:ffff0fd8 [<808127c8>] (call_with_stack) from [<80200e74>] (__irq_usr+0x74/0x80 arch/arm/kernel/entry-armv.S:436) Exception stack(0xdf955fb0 to 0xdf955ff8) 5fa0: 00000000 00000001 00a000e8 00000000 5fc0: 00000000 01426000 01428000 000000a2 00000005 00000000 014002d0 00000005 5fe0: 000015f9 01435f4c 00012338 ffff0fd8 20000010 ffffffff