do not call blocking ops when !TASK_RUNNING; state=8 set at [<00000000289cb191>] ptrace_stop+0x0/0x9e0 kernel/signal.c:2054 WARNING: CPU: 3 PID: 9065 at kernel/sched/core.c:6883 __might_sleep+0x135/0x190 kernel/sched/core.c:6883 Kernel panic - not syncing: panic_on_warn set ... CPU: 3 PID: 9065 Comm: syz-executor.0 Not tainted 5.8.0-rc5-syzkaller #0 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.12.0-59-gc9ba5276e321-prebuilt.qemu.org 04/01/2014 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x18f/0x20d lib/dump_stack.c:118 panic+0x2e3/0x75c kernel/panic.c:231 __warn.cold+0x20/0x45 kernel/panic.c:600 report_bug+0x1bd/0x210 lib/bug.c:198 handle_bug+0x38/0x90 arch/x86/kernel/traps.c:235 exc_invalid_op+0x13/0x40 arch/x86/kernel/traps.c:255 asm_exc_invalid_op+0x12/0x20 arch/x86/include/asm/idtentry.h:540 RIP: 0010:__might_sleep+0x135/0x190 kernel/sched/core.c:6883 Code: 65 48 8b 1c 25 00 ff 01 00 48 8d 7b 10 48 89 fe 48 c1 ee 03 80 3c 06 00 75 2b 48 8b 73 10 48 c7 c7 a0 3f 4b 88 e8 2d 1a f5 ff <0f> 0b e9 46 ff ff ff e8 3f 40 63 00 e9 29 ff ff ff e8 35 40 63 00 RSP: 0018:ffffc9000d28fc70 EFLAGS: 00010286 RAX: 0000000000000000 RBX: ffff8880601b18c0 RCX: 0000000000000000 RDX: 0000000000040000 RSI: ffffffff815d4eb7 RDI: fffff52001a51f80 RBP: ffffffff884ab220 R08: 0000000000000001 R09: ffff88802d1318e7 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000039 R13: 0000000000000000 R14: 0000000000000000 R15: ffff8880601b1d48 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+0x4e2/0x9e0 kernel/signal.c:2215 ptrace_signal kernel/signal.c:2490 [inline] get_signal+0xddc/0x1ee0 kernel/signal.c:2639 do_signal+0x82/0x2520 arch/x86/kernel/signal.c:810 exit_to_usermode_loop arch/x86/entry/common.c:235 [inline] __prepare_exit_to_usermode+0x156/0x1f0 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: 0023:0xf7f9a569 Code: Bad RIP value. RSP: 002b:00000000f5d950bc EFLAGS: 00000296 ORIG_RAX: 0000000000000072 RAX: fffffffffffffe00 RBX: 0000000000000000 RCX: 0000000000000000 RDX: 0000000080000002 RSI: 0000000000000000 RDI: 0000000000000000 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..