do not call blocking ops when !TASK_RUNNING; state=1 set at [<0000000058f3cb00>] prepare_to_wait+0xb1/0x2a0 kernel/sched/wait.c:247 WARNING: CPU: 0 PID: 11116 at kernel/sched/core.c:6888 __might_sleep+0x135/0x190 kernel/sched/core.c:6888 Kernel panic - not syncing: panic_on_warn set ... CPU: 0 PID: 11116 Comm: syz-executor.4 Not tainted 5.8.0-rc7-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+0xf6/0x16e lib/dump_stack.c:118 panic+0x2aa/0x6e1 kernel/panic.c:231 __warn.cold+0x20/0x50 kernel/panic.c:600 report_bug+0x1bd/0x210 lib/bug.c:198 handle_bug+0x41/0x80 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:6888 Code: 65 48 8b 1c 25 40 ef 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 9f 06 86 e8 9d 09 f6 ff <0f> 0b e9 46 ff ff ff e8 6f 59 4b 00 e9 29 ff ff ff e8 65 59 4b 00 RSP: 0018:ffff8881d0387a68 EFLAGS: 00010286 RAX: 0000000000000000 RBX: ffff8881c7920000 RCX: 0000000000000000 RDX: 0000000000040000 RSI: ffffffff8129b763 RDI: ffffed103a070f3f RBP: ffffffff86fd5dea R08: 0000000000000001 R09: ffff8881db22f50f R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000237 R13: 0000000000000000 R14: ffffffff83bf5a9a R15: ffffffff879af660 slab_pre_alloc_hook mm/slab.h:567 [inline] slab_alloc_node mm/slub.c:2748 [inline] slab_alloc mm/slub.c:2832 [inline] kmem_cache_alloc_trace+0x1dc/0x250 mm/slub.c:2849 kmalloc include/linux/slab.h:555 [inline] dummy_urb_enqueue+0x7a/0x880 drivers/usb/gadget/udc/dummy_hcd.c:1251 usb_hcd_submit_urb+0x2b2/0x22d0 drivers/usb/core/hcd.c:1547 usb_submit_urb+0xb4e/0x13e0 drivers/usb/core/urb.c:570 yurex_write+0x3ea/0x820 drivers/usb/misc/yurex.c:495 vfs_write+0x2b0/0x6b0 fs/read_write.c:576 ksys_write+0x12d/0x250 fs/read_write.c:631 do_syscall_64+0x50/0x90 arch/x86/entry/common.c:384 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x45cc79 Code: 2d b6 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 fb b5 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007f7212c42c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 0000000000038000 RCX: 000000000045cc79 RDX: 0000000000000019 RSI: 0000000020000000 RDI: 0000000000000005 RBP: 000000000078bf40 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000078bf0c R13: 00007ffd737f858f R14: 00007f7212c439c0 R15: 000000000078bf0c Kernel Offset: disabled Rebooting in 86400 seconds..