------------[ cut here ]------------ do not call blocking ops when !TASK_RUNNING; state=8 set at [<00000000bb877b36>] ptrace_stop+0x40/0xa20 kernel/signal.c:2145 WARNING: CPU: 1 PID: 27729 at kernel/sched/core.c:6888 __might_sleep+0xed/0x100 kernel/sched/core.c:6883 Kernel panic - not syncing: panic_on_warn set ... CPU: 1 PID: 27729 Comm: syz-executor491 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+0x1f0/0x31e lib/dump_stack.c:118 panic+0x264/0x7a0 kernel/panic.c:231 __warn+0x227/0x250 kernel/panic.c:600 report_bug+0x1b1/0x2e0 lib/bug.c:198 handle_bug+0x42/0x80 arch/x86/kernel/traps.c:235 exc_invalid_op+0x16/0x40 arch/x86/kernel/traps.c:255 asm_exc_invalid_op+0x12/0x20 arch/x86/include/asm/idtentry.h:540 RIP: 0010:__might_sleep+0xed/0x100 kernel/sched/core.c:6883 Code: fc ff df 41 80 3c 06 00 74 08 48 89 ef e8 ab 23 62 00 48 8b 4d 00 48 c7 c7 e1 88 08 89 48 89 de 48 89 ca 31 c0 e8 c3 d5 f4 ff <0f> 0b eb 8e 0f 1f 44 00 00 66 2e 0f 1f 84 00 00 00 00 00 55 41 57 RSP: 0018:ffffc90004127c20 EFLAGS: 00010246 RAX: 23e165c6dad11800 RBX: 0000000000000008 RCX: ffff8880837a2580 RDX: 0000000000000000 RSI: 0000000080000000 RDI: 0000000000000000 RBP: ffff8880837a39c0 R08: ffffffff815dd349 R09: ffffed1015d262c0 R10: ffffed1015d262c0 R11: 0000000000000000 R12: ffffffff89085649 R13: ffff8880837a2590 R14: 1ffff110106f4738 R15: 0000000000000039 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+0x535/0xa20 kernel/signal.c:2215 ptrace_signal kernel/signal.c:2490 [inline] get_signal+0xa50/0x1d30 kernel/signal.c:2639 do_signal+0x33/0x610 arch/x86/kernel/signal.c:810 exit_to_usermode_loop arch/x86/entry/common.c:235 [inline] __prepare_exit_to_usermode+0xd7/0x1e0 arch/x86/entry/common.c:269 do_syscall_64+0x7f/0xe0 arch/x86/entry/common.c:393 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x4468f9 Code: Bad RIP value. RSP: 002b:00007fabd0b64db8 EFLAGS: 00000246 ORIG_RAX: 00000000000000c8 RAX: 0000000000000000 RBX: 00000000006dbc28 RCX: 00000000004468f9 RDX: 00000000004468f9 RSI: 0000000000000017 RDI: 00000000000051b3 RBP: 00000000006dbc20 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00000000006dbc2c R13: 00007ffc89a130ef R14: 00007fabd0b659c0 R15: 0000000000000064 Kernel Offset: disabled Rebooting in 86400 seconds..