Re: [syzbot] INFO: task hung in fuse_simple_request

From: syzbot
Date: Fri Jul 16 2021 - 22:28:23 EST

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syzbot has found a reproducer for the following issue on:

HEAD commit: d936eb238744 Revert "Makefile: Enable -Wimplicit-fallthrou..
git tree: upstream
console output: https://syzkaller.appspot.com/x/log.txt?x=1492834a300000
kernel config: https://syzkaller.appspot.com/x/.config?x=73e52880ded966e4
dashboard link: https://syzkaller.appspot.com/bug?extid=46fe899420456e014d6b
compiler: Debian clang version 11.0.1-2
syz repro: https://syzkaller.appspot.com/x/repro.syz?x=165fc902300000
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=1130705c300000

IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+46fe899420456e014d6b@xxxxxxxxxxxxxxxxxxxxxxxxx

INFO: task syz-executor874:8578 blocked for more than 143 seconds.
Not tainted 5.14.0-rc1-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor874 state:D stack:26768 pid: 8578 ppid: 8450 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:4683 [inline]
__schedule+0xc07/0x11f0 kernel/sched/core.c:5940
schedule+0x14b/0x210 kernel/sched/core.c:6019
request_wait_answer fs/fuse/dev.c:411 [inline]
__fuse_request_send fs/fuse/dev.c:430 [inline]
fuse_simple_request+0x1125/0x19f0 fs/fuse/dev.c:515
fuse_do_getattr+0x396/0x1210 fs/fuse/dir.c:1009
vfs_getattr fs/stat.c:142 [inline]
vfs_statx+0x1ba/0x3d0 fs/stat.c:207
vfs_fstatat fs/stat.c:225 [inline]
__do_sys_newfstatat fs/stat.c:394 [inline]
__se_sys_newfstatat+0xb4/0x780 fs/stat.c:388
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x446039
RSP: 002b:00007fbb526242f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000106
RAX: ffffffffffffffda RBX: 00000000004cb4e0 RCX: 0000000000446039
RDX: 0000000000000000 RSI: 00000000200000c0 RDI: ffffffffffffff9c
RBP: 000000000049b16c R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0030656c69662f2e
R13: 64695f70756f7267 R14: 65646f6d746f6f72 R15: 00000000004cb4e8
INFO: task syz-executor874:8582 blocked for more than 143 seconds.
Not tainted 5.14.0-rc1-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor874 state:D stack:25368 pid: 8582 ppid: 8451 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:4683 [inline]
__schedule+0xc07/0x11f0 kernel/sched/core.c:5940
schedule+0x14b/0x210 kernel/sched/core.c:6019
request_wait_answer fs/fuse/dev.c:411 [inline]
__fuse_request_send fs/fuse/dev.c:430 [inline]
fuse_simple_request+0x1125/0x19f0 fs/fuse/dev.c:515
fuse_do_getattr+0x396/0x1210 fs/fuse/dir.c:1009
vfs_getattr fs/stat.c:142 [inline]
vfs_statx+0x1ba/0x3d0 fs/stat.c:207
vfs_fstatat fs/stat.c:225 [inline]
__do_sys_newfstatat fs/stat.c:394 [inline]
__se_sys_newfstatat+0xb4/0x780 fs/stat.c:388
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x446039
RSP: 002b:00007fbb526242f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000106
RAX: ffffffffffffffda RBX: 00000000004cb4e0 RCX: 0000000000446039
RDX: 0000000000000000 RSI: 00000000200000c0 RDI: ffffffffffffff9c
RBP: 000000000049b16c R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0030656c69662f2e
R13: 64695f70756f7267 R14: 65646f6d746f6f72 R15: 00000000004cb4e8
INFO: task syz-executor874:8597 blocked for more than 143 seconds.
Not tainted 5.14.0-rc1-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor874 state:D stack:24784 pid: 8597 ppid: 8448 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:4683 [inline]
__schedule+0xc07/0x11f0 kernel/sched/core.c:5940
schedule+0x14b/0x210 kernel/sched/core.c:6019
request_wait_answer fs/fuse/dev.c:411 [inline]
__fuse_request_send fs/fuse/dev.c:430 [inline]
fuse_simple_request+0x1125/0x19f0 fs/fuse/dev.c:515
fuse_do_getattr+0x396/0x1210 fs/fuse/dir.c:1009
vfs_getattr fs/stat.c:142 [inline]
vfs_statx+0x1ba/0x3d0 fs/stat.c:207
vfs_fstatat fs/stat.c:225 [inline]
__do_sys_newfstatat fs/stat.c:394 [inline]
__se_sys_newfstatat+0xb4/0x780 fs/stat.c:388
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x446039
RSP: 002b:00007fbb526242f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000106
RAX: ffffffffffffffda RBX: 00000000004cb4e0 RCX: 0000000000446039
RDX: 0000000000000000 RSI: 00000000200000c0 RDI: ffffffffffffff9c
RBP: 000000000049b16c R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0030656c69662f2e
R13: 64695f70756f7267 R14: 65646f6d746f6f72 R15: 00000000004cb4e8
INFO: task syz-executor874:8601 blocked for more than 144 seconds.
Not tainted 5.14.0-rc1-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor874 state:D stack:24784 pid: 8601 ppid: 8452 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:4683 [inline]
__schedule+0xc07/0x11f0 kernel/sched/core.c:5940
schedule+0x14b/0x210 kernel/sched/core.c:6019
request_wait_answer fs/fuse/dev.c:411 [inline]
__fuse_request_send fs/fuse/dev.c:430 [inline]
fuse_simple_request+0x1125/0x19f0 fs/fuse/dev.c:515
fuse_do_getattr+0x396/0x1210 fs/fuse/dir.c:1009
vfs_getattr fs/stat.c:142 [inline]
vfs_statx+0x1ba/0x3d0 fs/stat.c:207
vfs_fstatat fs/stat.c:225 [inline]
__do_sys_newfstatat fs/stat.c:394 [inline]
__se_sys_newfstatat+0xb4/0x780 fs/stat.c:388
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x446039
RSP: 002b:00007fbb526242f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000106
RAX: ffffffffffffffda RBX: 00000000004cb4e0 RCX: 0000000000446039
RDX: 0000000000000000 RSI: 00000000200000c0 RDI: ffffffffffffff9c
RBP: 000000000049b16c R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0030656c69662f2e
R13: 64695f70756f7267 R14: 65646f6d746f6f72 R15: 00000000004cb4e8
INFO: task syz-executor874:8617 blocked for more than 144 seconds.
Not tainted 5.14.0-rc1-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor874 state:D stack:26768 pid: 8617 ppid: 8451 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:4683 [inline]
__schedule+0xc07/0x11f0 kernel/sched/core.c:5940
schedule+0x14b/0x210 kernel/sched/core.c:6019
request_wait_answer fs/fuse/dev.c:411 [inline]
__fuse_request_send fs/fuse/dev.c:430 [inline]
fuse_simple_request+0x1125/0x19f0 fs/fuse/dev.c:515
fuse_do_getattr+0x396/0x1210 fs/fuse/dir.c:1009
vfs_getattr fs/stat.c:142 [inline]
vfs_statx+0x1ba/0x3d0 fs/stat.c:207
vfs_fstatat fs/stat.c:225 [inline]
__do_sys_newfstatat fs/stat.c:394 [inline]
__se_sys_newfstatat+0xb4/0x780 fs/stat.c:388
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x446039
RSP: 002b:00007fbb526242f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000106
RAX: ffffffffffffffda RBX: 00000000004cb4e0 RCX: 0000000000446039
RDX: 0000000000000000 RSI: 00000000200000c0 RDI: ffffffffffffff9c
RBP: 000000000049b16c R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0030656c69662f2e
R13: 64695f70756f7267 R14: 65646f6d746f6f72 R15: 00000000004cb4e8
INFO: task syz-executor874:8626 blocked for more than 144 seconds.
Not tainted 5.14.0-rc1-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor874 state:D stack:24784 pid: 8626 ppid: 8450 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:4683 [inline]
__schedule+0xc07/0x11f0 kernel/sched/core.c:5940
schedule+0x14b/0x210 kernel/sched/core.c:6019
request_wait_answer fs/fuse/dev.c:411 [inline]
__fuse_request_send fs/fuse/dev.c:430 [inline]
fuse_simple_request+0x1125/0x19f0 fs/fuse/dev.c:515
fuse_do_getattr+0x396/0x1210 fs/fuse/dir.c:1009
vfs_getattr fs/stat.c:142 [inline]
vfs_statx+0x1ba/0x3d0 fs/stat.c:207
vfs_fstatat fs/stat.c:225 [inline]
__do_sys_newfstatat fs/stat.c:394 [inline]
__se_sys_newfstatat+0xb4/0x780 fs/stat.c:388
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x446039
RSP: 002b:00007fbb526242f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000106
RAX: ffffffffffffffda RBX: 00000000004cb4e0 RCX: 0000000000446039
RDX: 0000000000000000 RSI: 00000000200000c0 RDI: ffffffffffffff9c
RBP: 000000000049b16c R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0030656c69662f2e
R13: 64695f70756f7267 R14: 65646f6d746f6f72 R15: 00000000004cb4e8
INFO: task syz-executor874:8630 blocked for more than 145 seconds.
Not tainted 5.14.0-rc1-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor874 state:D stack:24784 pid: 8630 ppid: 8452 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:4683 [inline]
__schedule+0xc07/0x11f0 kernel/sched/core.c:5940
schedule+0x14b/0x210 kernel/sched/core.c:6019
request_wait_answer fs/fuse/dev.c:411 [inline]
__fuse_request_send fs/fuse/dev.c:430 [inline]
fuse_simple_request+0x1125/0x19f0 fs/fuse/dev.c:515
fuse_do_getattr+0x396/0x1210 fs/fuse/dir.c:1009
vfs_getattr fs/stat.c:142 [inline]
vfs_statx+0x1ba/0x3d0 fs/stat.c:207
vfs_fstatat fs/stat.c:225 [inline]
__do_sys_newfstatat fs/stat.c:394 [inline]
__se_sys_newfstatat+0xb4/0x780 fs/stat.c:388
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x446039
RSP: 002b:00007fbb526242f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000106
RAX: ffffffffffffffda RBX: 00000000004cb4e0 RCX: 0000000000446039
RDX: 0000000000000000 RSI: 00000000200000c0 RDI: ffffffffffffff9c
RBP: 000000000049b16c R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0030656c69662f2e
R13: 64695f70756f7267 R14: 65646f6d746f6f72 R15: 00000000004cb4e8
INFO: task syz-executor874:8634 blocked for more than 145 seconds.
Not tainted 5.14.0-rc1-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor874 state:D stack:26640 pid: 8634 ppid: 8448 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:4683 [inline]
__schedule+0xc07/0x11f0 kernel/sched/core.c:5940
schedule+0x14b/0x210 kernel/sched/core.c:6019
request_wait_answer fs/fuse/dev.c:411 [inline]
__fuse_request_send fs/fuse/dev.c:430 [inline]
fuse_simple_request+0x1125/0x19f0 fs/fuse/dev.c:515
fuse_do_getattr+0x396/0x1210 fs/fuse/dir.c:1009
vfs_getattr fs/stat.c:142 [inline]
vfs_statx+0x1ba/0x3d0 fs/stat.c:207
vfs_fstatat fs/stat.c:225 [inline]
__do_sys_newfstatat fs/stat.c:394 [inline]
__se_sys_newfstatat+0xb4/0x780 fs/stat.c:388
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x446039
RSP: 002b:00007fbb526242f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000106
RAX: ffffffffffffffda RBX: 00000000004cb4e0 RCX: 0000000000446039
RDX: 0000000000000000 RSI: 00000000200000c0 RDI: ffffffffffffff9c
RBP: 000000000049b16c R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0030656c69662f2e
R13: 64695f70756f7267 R14: 65646f6d746f6f72 R15: 00000000004cb4e8
INFO: task syz-executor874:8657 blocked for more than 145 seconds.
Not tainted 5.14.0-rc1-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor874 state:D stack:26768 pid: 8657 ppid: 8450 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:4683 [inline]
__schedule+0xc07/0x11f0 kernel/sched/core.c:5940
schedule+0x14b/0x210 kernel/sched/core.c:6019
request_wait_answer fs/fuse/dev.c:411 [inline]
__fuse_request_send fs/fuse/dev.c:430 [inline]
fuse_simple_request+0x1125/0x19f0 fs/fuse/dev.c:515
fuse_do_getattr+0x396/0x1210 fs/fuse/dir.c:1009
vfs_getattr fs/stat.c:142 [inline]
vfs_statx+0x1ba/0x3d0 fs/stat.c:207
vfs_fstatat fs/stat.c:225 [inline]
__do_sys_newfstatat fs/stat.c:394 [inline]
__se_sys_newfstatat+0xb4/0x780 fs/stat.c:388
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x446039
RSP: 002b:00007fbb526242f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000106
RAX: ffffffffffffffda RBX: 00000000004cb4e0 RCX: 0000000000446039
RDX: 0000000000000000 RSI: 00000000200000c0 RDI: ffffffffffffff9c
RBP: 000000000049b16c R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0030656c69662f2e
R13: 64695f70756f7267 R14: 65646f6d746f6f72 R15: 00000000004cb4e8
INFO: task syz-executor874:8665 blocked for more than 145 seconds.
Not tainted 5.14.0-rc1-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor874 state:D stack:26768 pid: 8665 ppid: 8452 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:4683 [inline]
__schedule+0xc07/0x11f0 kernel/sched/core.c:5940
schedule+0x14b/0x210 kernel/sched/core.c:6019
request_wait_answer fs/fuse/dev.c:411 [inline]
__fuse_request_send fs/fuse/dev.c:430 [inline]
fuse_simple_request+0x1125/0x19f0 fs/fuse/dev.c:515
fuse_do_getattr+0x396/0x1210 fs/fuse/dir.c:1009
vfs_getattr fs/stat.c:142 [inline]
vfs_statx+0x1ba/0x3d0 fs/stat.c:207
vfs_fstatat fs/stat.c:225 [inline]
__do_sys_newfstatat fs/stat.c:394 [inline]
__se_sys_newfstatat+0xb4/0x780 fs/stat.c:388
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x446039
RSP: 002b:00007fbb526242f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000106
RAX: ffffffffffffffda RBX: 00000000004cb4e0 RCX: 0000000000446039
RDX: 0000000000000000 RSI: 00000000200000c0 RDI: ffffffffffffff9c
RBP: 000000000049b16c R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0030656c69662f2e
R13: 64695f70756f7267 R14: 65646f6d746f6f72 R15: 00000000004cb4e8

Showing all locks held in the system:
1 lock held by ksoftirqd/0/13:
#0: ffff8880b9c514d8 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x1b/0x30 kernel/sched/core.c:460
1 lock held by khungtaskd/1644:
#0: ffffffff8c7177c0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x0/0x30 arch/x86/pci/mmconfig_64.c:151
1 lock held by in:imklog/8138:
#0: ffff888019edb270 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0x24e/0x2f0 fs/file.c:974
no locks held by syz-executor874/16040.

=============================================

NMI backtrace for cpu 1
CPU: 1 PID: 1644 Comm: khungtaskd Not tainted 5.14.0-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:88 [inline]
dump_stack_lvl+0x1d3/0x29f lib/dump_stack.c:105
nmi_cpu_backtrace+0x16c/0x190 lib/nmi_backtrace.c:105
nmi_trigger_cpumask_backtrace+0x191/0x2f0 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:146 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:210 [inline]
watchdog+0xd06/0xd50 kernel/hung_task.c:295
kthread+0x453/0x480 kernel/kthread.c:319
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 8453 Comm: syz-executor874 Not tainted 5.14.0-rc1-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:put_pid+0x0/0x130 kernel/pid.c:106
Code: 1f 84 00 00 00 00 00 0f 1f 00 be af 00 00 00 48 c7 c7 40 99 5c 8c e8 ff d4 74 00 c3 cc cc cc cc cc cc cc cc cc cc cc cc cc cc <55> 41 57 41 56 41 54 53 49 89 ff e8 c0 a3 2b 00 4d 85 ff 0f 84 aa
RSP: 0018:ffffc9000198fc78 EFLAGS: 00000286
RAX: 0000000000000000 RBX: dffffc0000000000 RCX: 0000000000000001
RDX: dffffc0000000000 RSI: 0000000000000001 RDI: 0000000000000000
RBP: ffffc9000198fd90 R08: ffffffff81869020 R09: ffffed1002bf8685
R10: ffffed1002bf8685 R11: 0000000000000000 R12: 0000000000000000
R13: 1ffff92000331f94 R14: 1ffff92000331f9b R15: 0000000000000000
FS: 00000000020ba300(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fbb52603718 CR3: 00000000366ee000 CR4: 00000000001506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
kernel_wait4+0x27f/0x380 kernel/exit.c:1678
__do_sys_wait4 kernel/exit.c:1705 [inline]
__se_sys_wait4 kernel/exit.c:1701 [inline]
__x64_sys_wait4+0x117/0x1c0 kernel/exit.c:1701
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x444826
Code: 0f 1f 40 00 31 c9 e9 09 00 00 00 66 0f 1f 84 00 00 00 00 00 49 89 ca 64 8b 04 25 18 00 00 00 85 c0 75 11 b8 3d 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 5a c3 90 48 83 ec 28 89 54 24 14 48 89 74 24
RSP: 002b:00007fff50fbe958 EFLAGS: 00000246 ORIG_RAX: 000000000000003d
RAX: ffffffffffffffda RBX: 00007fff50fbea10 RCX: 0000000000444826
RDX: 0000000040000001 RSI: 00007fff50fbe98c RDI: 00000000ffffffff
RBP: 00007fff50fbe98c R08: 00007fff50fec080 R09: 0000000000000010
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000000f4240
R13: 0000000000001eee R14: 00007fff50fbe9e0 R15: 00007fff50fbe9d0

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