do not call blocking ops when !TASK_RUNNING; state=1 set at [<0000000069ca0166>] n_hdlc_tty_read+0x32a/0x810 drivers/tty/n_hdlc.c:589
WARNING: CPU: 0 PID: 2921 at kernel/sched/core.c:6094 __might_sleep+0x13d/0x190 kernel/sched/core.c:6094
kobject: 'kvm' (000000007e7afadc): kobject_uevent_env
Kernel panic - not syncing: panic_on_warn set ...
CPU: 0 PID: 2921 Comm: syz-executor3 Not tainted 4.20.0+ #4
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+0x1db/0x2d0 lib/dump_stack.c:113
 panic+0x2cb/0x589 kernel/panic.c:189
kobject: 'kvm' (000000007e7afadc): kobject_uevent_env
 __warn.cold+0x20/0x4b kernel/panic.c:544
kobject: 'kvm' (000000007e7afadc): fill_kobj_path: path = '/devices/virtual/misc/kvm'
 report_bug+0x263/0x2b0 lib/bug.c:186
 fixup_bug arch/x86/kernel/traps.c:178 [inline]
 fixup_bug arch/x86/kernel/traps.c:173 [inline]
 do_error_trap+0x11b/0x200 arch/x86/kernel/traps.c:271
 do_invalid_op+0x37/0x50 arch/x86/kernel/traps.c:290
kobject: 'kvm' (000000007e7afadc): fill_kobj_path: path = '/devices/virtual/misc/kvm'
 invalid_op+0x14/0x20 arch/x86/entry/entry_64.S:973
RIP: 0010:__might_sleep+0x13d/0x190 kernel/sched/core.c:6094
Code: 65 48 8b 1c 25 40 ee 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 20 19 4b 88 e8 73 23 f3 ff <0f> 0b e9 43 ff ff ff e8 f7 73 6d 00 e9 26 ff ff ff e8 ed 73 6d 00
RSP: 0018:ffff88820a91f910 EFLAGS: 00010286
kobject: 'loop4' (000000008db1692f): kobject_uevent_env
RAX: 0000000000000000 RBX: ffff88808d6fe640 RCX: ffffc9000c00a000
RDX: 0000000000018bb7 RSI: ffffffff8167d666 RDI: 0000000000000005
RBP: ffff88820a91f940 R08: ffff88808d6fe640 R09: ffffed1015cc5021
R10: ffffed1015cc5020 R11: ffff8880ae628107 R12: ffffffff88811d40
R13: 0000000000000019 R14: 0000000000000000 R15: ffff88808d6fe640
kobject: 'kvm' (000000007e7afadc): kobject_uevent_env
 __might_fault+0xc6/0x1e0 mm/memory.c:4358
 _copy_to_user+0x30/0x120 lib/usercopy.c:25
kobject: 'loop4' (000000008db1692f): fill_kobj_path: path = '/devices/virtual/block/loop4'
 copy_to_user include/linux/uaccess.h:155 [inline]
 n_hdlc_tty_read+0x60f/0x810 drivers/tty/n_hdlc.c:600
kobject: 'kvm' (000000007e7afadc): fill_kobj_path: path = '/devices/virtual/misc/kvm'
 tty_read+0x196/0x2a0 drivers/tty/tty_io.c:866
 do_loop_readv_writev fs/read_write.c:700 [inline]
 do_loop_readv_writev fs/read_write.c:687 [inline]
 do_iter_read+0x4a9/0x660 fs/read_write.c:924
kobject: 'loop1' (0000000035810c31): kobject_uevent_env
 vfs_readv+0x175/0x1c0 fs/read_write.c:986
kobject: 'loop1' (0000000035810c31): fill_kobj_path: path = '/devices/virtual/block/loop1'
kobject: 'loop5' (000000007941f3fd): kobject_uevent_env
kobject: 'loop5' (000000007941f3fd): fill_kobj_path: path = '/devices/virtual/block/loop5'
 do_readv+0x11a/0x300 fs/read_write.c:1019
 __do_sys_readv fs/read_write.c:1106 [inline]
 __se_sys_readv fs/read_write.c:1103 [inline]
 __x64_sys_readv+0x75/0xb0 fs/read_write.c:1103
 do_syscall_64+0x1a3/0x800 arch/x86/entry/common.c:290
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x457ec9
Code: 6d b7 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 3b b7 fb ff c3 66 2e 0f 1f 84 00 00 00 00
kobject: 'loop2' (00000000624930c0): kobject_uevent_env
RSP: 002b:00007f5f01408c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000013
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000457ec9
RDX: 0000000000000003 RSI: 0000000020000040 RDI: 0000000000000004
RBP: 000000000073bfa0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f5f014096d4
R13: 00000000004c470c R14: 00000000004d7ca8 R15: 00000000ffffffff
Kernel Offset: disabled
Rebooting in 86400 seconds..