INFO: task syz-executor.1:30809 blocked for more than 143 seconds. Not tainted 6.5.0-syzkaller-11075-g92901222f83d #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.1 state:D stack:25840 pid:30809 ppid:5059 flags:0x00004006 Call Trace: context_switch kernel/sched/core.c:5382 [inline] __schedule+0x1873/0x48f0 kernel/sched/core.c:6695 schedule+0xc3/0x180 kernel/sched/core.c:6771 coredump_task_exit+0x349/0x460 kernel/exit.c:436 do_exit+0x29a/0x2290 kernel/exit.c:823 do_group_exit+0x206/0x2c0 kernel/exit.c:1024 get_signal+0x175d/0x1840 kernel/signal.c:2892 arch_do_signal_or_restart+0x96/0x860 arch/x86/kernel/signal.c:309 exit_to_user_mode_loop+0x6a/0x100 kernel/entry/common.c:168 exit_to_user_mode_prepare+0xb1/0x140 kernel/entry/common.c:204 __syscall_exit_to_user_mode_work kernel/entry/common.c:285 [inline] syscall_exit_to_user_mode+0x64/0x280 kernel/entry/common.c:296 do_syscall_64+0x4d/0xc0 arch/x86/entry/common.c:86 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7f1e2da7cae9 RSP: 002b:00007ffdd33780b8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca RAX: fffffffffffffdfc RBX: 00000000000fd403 RCX: 00007f1e2da7cae9 RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007f1e2db9bf8c RBP: 0000000000000032 R08: 00007f1e2db9bf8c R09: 00007f1e2db9bf8c R10: 00007ffdd33781f0 R11: 0000000000000246 R12: 00007f1e2db9bf8c R13: 00000000000fd435 R14: 00007ffdd3378210 R15: 00007ffdd33781f0 INFO: lockdep is turned off. NMI backtrace for cpu 0 CPU: 0 PID: 30 Comm: khungtaskd Not tainted 6.5.0-syzkaller-11075-g92901222f83d #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/26/2023 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x1e7/0x2d0 lib/dump_stack.c:106 nmi_cpu_backtrace+0x498/0x4d0 lib/nmi_backtrace.c:113 nmi_trigger_cpumask_backtrace+0x198/0x310 lib/nmi_backtrace.c:62 trigger_all_cpu_backtrace include/linux/nmi.h:160 [inline] check_hung_uninterruptible_tasks kernel/hung_task.c:222 [inline] watchdog+0xdf5/0xe40 kernel/hung_task.c:379 kthread+0x2b8/0x350 kernel/kthread.c:388 ret_from_fork+0x48/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:304 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 1193 Comm: syz-executor.5 Not tainted 6.5.0-syzkaller-11075-g92901222f83d #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/26/2023 RIP: 0010:check_kcov_mode kernel/kcov.c:173 [inline] RIP: 0010:write_comp_data kernel/kcov.c:236 [inline] RIP: 0010:__sanitizer_cov_trace_const_cmp4+0x17/0x90 kernel/kcov.c:304 Code: 44 0a 20 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 f3 0f 1e fa 4c 8b 04 24 65 48 8b 15 40 27 76 7e 65 8b 05 41 27 76 7e 00 01 ff 00 74 10 a9 00 01 00 00 74 5b 83 ba 04 16 00 00 00 74 RSP: 0018:ffffc90003c5ebe0 EFLAGS: 00000246 RAX: 0000000080000001 RBX: ffffc90003c5ed20 RCX: ffff888033923b80 RDX: ffff888033923b80 RSI: 0000000000000001 RDI: 0000000000000000 RBP: 0000000000000001 R08: ffffffff813daf4b R09: ffffffff813d9b00 R10: 0000000000000003 R11: ffff888033923b80 R12: 1ffff9200078bda5 R13: 1ffff9200078bda6 R14: 1ffff9200078bda4 R15: ffffc90003c60000 FS: 00005555564ed480(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fa7c411f000 CR3: 0000000074358000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: on_stack arch/x86/include/asm/stacktrace.h:58 [inline] stack_access_ok arch/x86/kernel/unwind_orc.c:393 [inline] deref_stack_reg+0xab/0x250 arch/x86/kernel/unwind_orc.c:403 unwind_next_frame+0x1ab9/0x29e0 arch/x86/kernel/unwind_orc.c:648 arch_stack_walk+0x146/0x1a0 arch/x86/kernel/stacktrace.c:25 stack_trace_save+0x117/0x1c0 kernel/stacktrace.c:122 save_stack+0xfa/0x1e0 mm/page_owner.c:128 __set_page_owner+0x29/0x380 mm/page_owner.c:192 set_page_owner include/linux/page_owner.h:31 [inline] post_alloc_hook+0x1e6/0x210 mm/page_alloc.c:1536 prep_new_page mm/page_alloc.c:1543 [inline] get_page_from_freelist+0x31ec/0x3370 mm/page_alloc.c:3183 __alloc_pages+0x255/0x670 mm/page_alloc.c:4439 __get_free_pages+0xc/0x30 mm/page_alloc.c:4490 kasan_populate_vmalloc_pte+0x34/0xe0 mm/kasan/shadow.c:323 apply_to_pte_range mm/memory.c:2586 [inline] apply_to_pmd_range mm/memory.c:2630 [inline] apply_to_pud_range mm/memory.c:2666 [inline] apply_to_p4d_range mm/memory.c:2702 [inline] __apply_to_page_range+0x8e2/0xdf0 mm/memory.c:2736 alloc_vmap_area+0x1acb/0x1c00 mm/vmalloc.c:1641 __get_vm_area_node+0x16e/0x370 mm/vmalloc.c:2595 __vmalloc_node_range+0x3df/0x1490 mm/vmalloc.c:3280 alloc_thread_stack_node kernel/fork.c:309 [inline] dup_task_struct+0x3e5/0x7d0 kernel/fork.c:1118 copy_process+0x5c8/0x4290 kernel/fork.c:2327 kernel_clone+0x22d/0x7b0 kernel/fork.c:2909 __do_sys_clone3 kernel/fork.c:3210 [inline] __se_sys_clone3+0x2cb/0x340 kernel/fork.c:3194 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7fcc674a88d9 Code: ff ff eb d2 e8 f8 62 fd ff 0f 1f 84 00 00 00 00 00 b8 ea ff ff ff 48 85 ff 74 2c 48 85 d2 74 27 49 89 c8 b8 b3 01 00 00 0f 05 <48> 85 c0 7c 18 74 01 c3 31 ed 48 83 e4 f0 4c 89 c7 ff d2 48 89 c7 RSP: 002b:00007ffcb07938c8 EFLAGS: 00000206 ORIG_RAX: 00000000000001b3 RAX: ffffffffffffffda RBX: 00007fcc67450fc0 RCX: 00007fcc674a88d9 RDX: 00007fcc67450fc0 RSI: 0000000000000058 RDI: 00007ffcb0793910 RBP: 00007fcc681c06c0 R08: 00007fcc681c06c0 R09: 00007ffcb07939f7 R10: 0000000000000008 R11: 0000000000000206 R12: ffffffffffffffb0 R13: 000000000000000b R14: 00007ffcb0793910 R15: 00007ffcb07939f8