------------[ cut here ]------------ do not call blocking ops when !TASK_RUNNING; state=1 set at [<00000000affc4e8b>] prepare_to_wait+0xb1/0x2a0 kernel/sched/wait.c:247 WARNING: CPU: 1 PID: 3297 at kernel/sched/core.c:7246 __might_sleep+0x135/0x190 kernel/sched/core.c:7246 Kernel panic - not syncing: panic_on_warn set ... CPU: 1 PID: 3297 Comm: syz-executor.1 Not tainted 5.9.0-rc1-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+0x20/0x45 kernel/panic.c:600 report_bug+0x1bd/0x210 lib/bug.c:198 handle_bug+0x41/0x80 arch/x86/kernel/traps.c:234 exc_invalid_op+0x14/0x40 arch/x86/kernel/traps.c:254 asm_exc_invalid_op+0x12/0x20 arch/x86/include/asm/idtentry.h:536 RIP: 0010:__might_sleep+0x135/0x190 kernel/sched/core.c:7246 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 80 9d 06 86 e8 7d 1d f6 ff <0f> 0b e9 46 ff ff ff e8 4f ca 4b 00 e9 29 ff ff ff e8 45 ca 4b 00 RSP: 0018:ffff8881d5677a28 EFLAGS: 00010282 RAX: 0000000000000000 RBX: ffff8881d23bcbc0 RCX: 0000000000000000 RDX: 0000000000040000 RSI: ffffffff8129e673 RDI: ffffed103aacef37 RBP: ffffffff86fdd452 R08: 0000000000000001 R09: ffff8881db32f50f R10: 0000000000000000 R11: 0000000039323354 R12: 00000000000001f2 R13: 0000000000000000 R14: 0000000000000068 R15: ffffffff83c2287a slab_pre_alloc_hook.constprop.0+0xea/0x200 mm/slab.h:498 slab_alloc_node mm/slub.c:2816 [inline] slab_alloc mm/slub.c:2900 [inline] kmem_cache_alloc_trace+0x46/0x220 mm/slub.c:2917 kmalloc include/linux/slab.h:554 [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:493 vfs_write+0x2b0/0x730 fs/read_write.c:576 ksys_write+0x12d/0x250 fs/read_write.c:631 do_syscall_64+0x2d/0x40 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x45d5b9 Code: 5d b4 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 2b b4 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007f7964947c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 0000000000038dc0 RCX: 000000000045d5b9 RDX: 00000000fffffef3 RSI: 0000000020000040 RDI: 0000000000000005 RBP: 000000000118cf80 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000118cf4c R13: 00007fff1af70c9f R14: 00007f79649489c0 R15: 000000000118cf4c Kernel Offset: disabled Rebooting in 86400 seconds..