------------[ cut here ]------------ do not call blocking ops when !TASK_RUNNING; state=8 set at [<00000000b3944fd8>] ptrace_stop+0x0/0x2b0 kernel/signal.c:2073 WARNING: CPU: 0 PID: 25327 at kernel/sched/core.c:6888 __might_sleep+0x63/0x70 kernel/sched/core.c:6883 Kernel panic - not syncing: panic_on_warn set ... CPU: 0 PID: 25327 Comm: syz-executor738 Not tainted 5.8.0-rc6-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0xb3/0xec lib/dump_stack.c:118 panic+0x115/0x2fa kernel/panic.c:231 __warn.cold.13+0x20/0x25 kernel/panic.c:600 report_bug+0xc0/0xf0 lib/bug.c:198 handle_bug+0x35/0x90 arch/x86/kernel/traps.c:235 exc_invalid_op+0x13/0x60 arch/x86/kernel/traps.c:255 asm_exc_invalid_op+0x12/0x20 arch/x86/include/asm/idtentry.h:540 RIP: 0010:__might_sleep+0x63/0x70 kernel/sched/core.c:6883 Code: 5b 5d 41 5c e9 7e fe ff ff 48 8b 90 10 14 00 00 48 c7 c7 c8 cf e4 83 c6 05 98 76 3c 03 01 48 8b 70 10 48 89 d1 e8 98 70 fc ff <0f> 0b eb ca 66 0f 1f 84 00 00 00 00 00 89 f6 e9 a9 6e 0e 00 66 0f RSP: 0018:ffffc90006027db8 EFLAGS: 00010286 RAX: 0000000000000000 RBX: ffffffff83e4958e RCX: 0000000000000001 RDX: 0000000080000001 RSI: ffffffff8400db31 RDI: 00000000ffffffff RBP: 0000000000000039 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000001 R11: 0000000000000000 R12: 0000000000000000 R13: 0000000000000004 R14: 0000000000000000 R15: 000000000000003c try_to_freeze_unsafe include/linux/freezer.h:57 [inline] try_to_freeze include/linux/freezer.h:67 [inline] freezer_count include/linux/freezer.h:128 [inline] freezable_schedule include/linux/freezer.h:173 [inline] ptrace_stop+0x160/0x2b0 kernel/signal.c:2215 ptrace_signal kernel/signal.c:2490 [inline] get_signal+0x719/0xcb0 kernel/signal.c:2639 do_signal+0x2b/0x920 arch/x86/kernel/signal.c:810 exit_to_usermode_loop arch/x86/entry/common.c:235 [inline] __prepare_exit_to_usermode+0x1a7/0x210 arch/x86/entry/common.c:269 __do_fast_syscall_32 arch/x86/entry/common.c:475 [inline] do_fast_syscall_32+0x7f/0x120 arch/x86/entry/common.c:503 entry_SYSENTER_compat_after_hwframe+0x4d/0x5c RIP: 0023:0xf7f71569 Code: Bad RIP value. RSP: 002b:00000000ffec98ac EFLAGS: 00000296 ORIG_RAX: 0000000000000072 RAX: fffffffffffffe00 RBX: 0000000000000000 RCX: 0000000000000000 RDX: 0000000040000000 RSI: 0000000000000000 RDI: 00000000ffffffff RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 Kernel Offset: disabled Rebooting in 86400 seconds..