INFO: task syz.1.96:6610 blocked for more than 143 seconds.
Not tainted 6.15.0-syzkaller-10402-g4cb6c8af8591 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.1.96 state:D stack:24360 pid:6610 tgid:6609 ppid:5817 task_flags:0x400140 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5392 [inline]
__schedule+0x16a2/0x4cb0 kernel/sched/core.c:6781
__schedule_loop kernel/sched/core.c:6859 [inline]
schedule+0x165/0x360 kernel/sched/core.c:6874
io_schedule+0x81/0xe0 kernel/sched/core.c:7719
TXN_SLEEP_DROP_LOCK fs/jfs/jfs_txnmgr.c:125 [inline]
txLockAlloc+0x15e/0x380 fs/jfs/jfs_txnmgr.c:190
txLinelock+0x2f/0x180 fs/jfs/jfs_txnmgr.c:1069
dtDeleteEntry+0x390/0x8e0 fs/jfs/jfs_dtree.c:4034
dtDelete+0xd51/0x2c60 fs/jfs/jfs_dtree.c:2195
jfs_rename+0xb15/0x1610 fs/jfs/namei.c:1239
vfs_rename+0xb99/0xec0 fs/namei.c:5128
do_renameat2+0x878/0xc50 fs/namei.c:5277
__do_sys_rename fs/namei.c:5324 [inline]
__se_sys_rename fs/namei.c:5322 [inline]
__x64_sys_rename+0x82/0x90 fs/namei.c:5322
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f1504b8e969
RSP: 002b:00007f150599e038 EFLAGS: 00000246 ORIG_RAX: 0000000000000052
RAX: ffffffffffffffda RBX: 00007f1504db5fa0 RCX: 00007f1504b8e969
RDX: 0000000000000000 RSI: 0000200000000040 RDI: 0000200000000000
RBP: 00007f1504c10ab1 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f1504db5fa0 R15: 00007fffab0ecaa8
Showing all locks held in the system:
1 lock held by khungtaskd/31:
#0: ffffffff8e13ccc0 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:331 [inline]
#0: ffffffff8e13ccc0 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:841 [inline]
#0: ffffffff8e13ccc0 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x2e/0x180 kernel/locking/lockdep.c:6770
4 locks held by kworker/u8:4/59:
#0: ffff888142a91948 ((wq_completion)writeback){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3213 [inline]
#0: ffff888142a91948 ((wq_completion)writeback){+.+.}-{0:0}, at: process_scheduled_works+0x9b4/0x17b0 kernel/workqueue.c:3321
#1: ffffc9000210fbc0 ((work_completion)(&(&wb->dwork)->work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3214 [inline]
#1: ffffc9000210fbc0 ((work_completion)(&(&wb->dwork)->work)){+.+.}-{0:0}, at: process_scheduled_works+0x9ef/0x17b0 kernel/workqueue.c:3321
#2: ffff88807c8440e0 (&type->s_umount_key#99){++++}-{4:4}, at: super_trylock_shared+0x20/0xf0 fs/super.c:563
#3: ffff8880570fcb88 (&jfs_ip->commit_mutex){+.+.}-{4:4}, at: jfs_commit_inode+0x1ca/0x530 fs/jfs/inode.c:102
5 locks held by kworker/u8:5/1135:
2 locks held by getty/5576:
#0: ffff8880306f10a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243
#1: ffffc900036bb2f0 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x43e/0x1400 drivers/tty/n_tty.c:2222
3 locks held by kworker/1:3/5872:
#0: ffff88801a480d48 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3213 [inline]
#0: ffff88801a480d48 ((wq_completion)events){+.+.}-{0:0}, at: process_scheduled_works+0x9b4/0x17b0 kernel/workqueue.c:3321
#1: ffffc90004ba7bc0 (free_ipc_work){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3214 [inline]
#1: ffffc90004ba7bc0 (free_ipc_work){+.+.}-{0:0}, at: process_scheduled_works+0x9ef/0x17b0 kernel/workqueue.c:3321
#2: ffffffff8e1427f8 (rcu_state.exp_mutex){+.+.}-{4:4}, at: exp_funnel_lock kernel/rcu/tree_exp.h:336 [inline]
#2: ffffffff8e1427f8 (rcu_state.exp_mutex){+.+.}-{4:4}, at: synchronize_rcu_expedited+0x3b7/0x730 kernel/rcu/tree_exp.h:998
4 locks held by kworker/u8:8/5972:
#0: ffff888142a91948 ((wq_completion)writeback){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3213 [inline]
#0: ffff888142a91948 ((wq_completion)writeback){+.+.}-{0:0}, at: process_scheduled_works+0x9b4/0x17b0 kernel/workqueue.c:3321
#1: ffffc9000b037bc0 ((work_completion)(&(&wb->dwork)->work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3214 [inline]
#1: ffffc9000b037bc0 ((work_completion)(&(&wb->dwork)->work)){+.+.}-{0:0}, at: process_scheduled_works+0x9ef/0x17b0 kernel/workqueue.c:3321
#2: ffff888059d040e0 (&type->s_umount_key#99){++++}-{4:4}, at: super_trylock_shared+0x20/0xf0 fs/super.c:563
#3: ffff8880570fb918 (&jfs_ip->commit_mutex){+.+.}-{4:4}, at: jfs_commit_inode+0x1ca/0x530 fs/jfs/inode.c:102
8 locks held by syz.1.96/6610:
#0: ffff888051cba428 (sb_writers#26
){.+.+}-{0:0}
, at: mnt_want_write+0x41/0x90 fs/namespace.c:557
#1:
ffff88805141eae0
(&type->i_mutex_dir_key#16/1){+.+.}-{4:4}, at: inode_lock_nested include/linux/fs.h:912 [inline]
(&type->i_mutex_dir_key#16/1){+.+.}-{4:4}, at: lock_rename fs/namei.c:3272 [inline]
(&type->i_mutex_dir_key#16/1){+.+.}-{4:4}, at: do_renameat2+0x3dd/0xc50 fs/namei.c:5223
#2: ffff8880570f8578 (&sb->s_type->i_mutex_key#35){+.+.}-{4:4}, at: inode_lock include/linux/fs.h:867 [inline]
#2: ffff8880570f8578 (&sb->s_type->i_mutex_key#35){+.+.}-{4:4}, at: lock_two_nondirectories+0xe7/0x180 fs/inode.c:1233
#3: ffff8880570f8eb0 (&sb->s_type->i_mutex_key#33/4){+.+.}-{4:4}, at: vfs_rename+0x69a/0xec0 fs/namei.c:5099
#4: ffff8880570f8a70 (&jfs_ip->rdwrlock#2){++++}-{4:4}, at: jfs_rename+0x49b/0x1610 fs/jfs/namei.c:1144
#5: ffff88805141e730 (&jfs_ip->commit_mutex){+.+.}-{4:4}, at: jfs_rename+0x527/0x1610 fs/jfs/namei.c:1162
#6: ffff8880570f81c8 (&jfs_ip->commit_mutex/1){+.+.}-{4:4}, at: jfs_rename+0x542/0x1610 fs/jfs/namei.c:1163
#7: ffff8880570f8b00 (&jfs_ip->commit_mutex/3){+.+.}-{4:4}, at: jfs_rename+0x59b/0x1610 fs/jfs/namei.c:1169
7 locks held by kworker/u8:9/6910:
#0: ffff88801b2fb948 ((wq_completion)netns){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3213 [inline]
#0: ffff88801b2fb948 ((wq_completion)netns){+.+.}-{0:0}, at: process_scheduled_works+0x9b4/0x17b0 kernel/workqueue.c:3321
#1: ffffc900043ffbc0 (net_cleanup_work){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3214 [inline]
#1: ffffc900043ffbc0 (net_cleanup_work){+.+.}-{0:0}, at: process_scheduled_works+0x9ef/0x17b0 kernel/workqueue.c:3321
#2: ffffffff8f4eb150 (pernet_ops_rwsem){++++}-{4:4}, at: cleanup_net+0xf7/0x8a0 net/core/net_namespace.c:662
#3: ffff8880793b90e8 (&dev->mutex){....}-{4:4}, at: device_lock include/linux/device.h:884 [inline]
#3: ffff8880793b90e8 (&dev->mutex){....}-{4:4}, at: devl_dev_lock net/devlink/devl_internal.h:108 [inline]
#3: ffff8880793b90e8 (&dev->mutex){....}-{4:4}, at: devlink_pernet_pre_exit+0x10a/0x3d0 net/devlink/core.c:506
#4: ffff8880793bb250 (&devlink->lock_key#13){+.+.}-{4:4}, at: devl_lock net/devlink/core.c:276 [inline]
#4: ffff8880793bb250 (&devlink->lock_key#13){+.+.}-{4:4}, at: devl_dev_lock net/devlink/devl_internal.h:109 [inline]
#4: ffff8880793bb250 (&devlink->lock_key#13){+.+.}-{4:4}, at: devlink_pernet_pre_exit+0x11c/0x3d0 net/devlink/core.c:506
#5: ffffffff8f4f7d48 (rtnl_mutex){+.+.}-{4:4}, at: nsim_destroy+0xdb/0x670 drivers/net/netdevsim/netdev.c:1063
#6: ffff88805bac0d30 (&dev_instance_lock_key#20){+.+.}-{4:4}, at: netdev_lock include/linux/netdevice.h:2756 [inline]
#6: ffff88805bac0d30 (&dev_instance_lock_key#20){+.+.}-{4:4}, at: unregister_netdevice_many_notify+0x5a1/0x2320 net/core/dev.c:12035
2 locks held by syz.7.160/7311:
#0: ffff888059d04428 (sb_writers#26){.+.+}-{0:0}, at: mnt_want_write+0x41/0x90 fs/namespace.c:557
#1: ffff8880570fbcc8 (&type->i_mutex_dir_key#16/1){+.+.}-{4:4}, at: inode_lock_nested include/linux/fs.h:912 [inline]
#1: ffff8880570fbcc8 (&type->i_mutex_dir_key#16/1){+.+.}-{4:4}, at: filename_create+0x1f9/0x470 fs/namei.c:4139
3 locks held by syz.3.230/7955:
#0: ffff88807c844428 (sb_writers#26){.+.+}-{0:0}, at: direct_splice_actor+0x49/0x160 fs/splice.c:1157
#1: ffff8880570fd870 (&sb->s_type->i_mutex_key#35){+.+.}-{4:4}, at: inode_lock include/linux/fs.h:867 [inline]
#1: ffff8880570fd870 (&sb->s_type->i_mutex_key#35){+.+.}-{4:4}, at: generic_file_write_iter+0xe3/0x540 mm/filemap.c:4243
#2: ffff8880570fd430 (&jfs_ip->rdwrlock#2){++++}-{4:4}, at: jfs_get_block+0x141/0xab0 fs/jfs/inode.c:213
2 locks held by syz.3.230/7981:
#0: ffff88802e785eb8 (&f->f_pos_lock){+.+.}-{4:4}, at: fdget_pos+0x247/0x320 fs/file.c:1213
#1: ffff8880570fd870 (&sb->s_type->i_mutex_key#35){+.+.}-{4:4}, at: inode_lock include/linux/fs.h:867 [inline]
#1: ffff8880570fd870 (&sb->s_type->i_mutex_key#35){+.+.}-{4:4}, at: __blockdev_direct_IO+0x32a/0x33d0 fs/direct-io.c:1140
2 locks held by syz.3.230/7982:
#0: ffff88807c844428 (sb_writers#26){.+.+}-{0:0}, at: mnt_want_write+0x41/0x90 fs/namespace.c:557
#1: ffff8880570fcf38 (&type->i_mutex_dir_key#16/1){+.+.}-{4:4}, at: inode_lock_nested include/linux/fs.h:912 [inline]
#1: ffff8880570fcf38 (&type->i_mutex_dir_key#16/1){+.+.}-{4:4}, at: filename_create+0x1f9/0x470 fs/namei.c:4139
2 locks held by syz.3.230/7984:
#0: ffff88807c844428 (sb_writers#26){.+.+}-{0:0}, at: mnt_want_write+0x41/0x90 fs/namespace.c:557
#1: ffff8880570fcf38 (&type->i_mutex_dir_key#16/1){+.+.}-{4:4}, at: inode_lock_nested include/linux/fs.h:912 [inline]
#1: ffff8880570fcf38 (&type->i_mutex_dir_key#16/1){+.+.}-{4:4}, at: filename_create+0x1f9/0x470 fs/namei.c:4139
1 lock held by syz.3.230/7985:
#0: ffff8880570fd870 (&sb->s_type->i_mutex_key#35){+.+.}-{4:4}, at: inode_lock include/linux/fs.h:867 [inline]
#0: ffff8880570fd870 (&sb->s_type->i_mutex_key#35){+.+.}-{4:4}, at: process_measurement+0x3d8/0x1a40 security/integrity/ima/ima_main.c:260
2 locks held by syz.3.230/7987:
#0: ffff88807c844428 (sb_writers#26){.+.+}-{0:0}, at: mnt_want_write+0x41/0x90 fs/namespace.c:557
#1: ffff8880570fcf38 (&type->i_mutex_dir_key#18){++++}-{4:4}, at: inode_lock include/linux/fs.h:867 [inline]
#1: ffff8880570fcf38 (&type->i_mutex_dir_key#18){++++}-{4:4}, at: open_last_lookups fs/namei.c:3804 [inline]
#1: ffff8880570fcf38 (&type->i_mutex_dir_key#18){++++}-{4:4}, at: path_openat+0x8da/0x3830 fs/namei.c:4043
2 locks held by syz.3.230/7988:
#0: ffff88807c844428 (sb_writers#26){.+.+}-{0:0}, at: mnt_want_write+0x41/0x90 fs/namespace.c:557
#1: ffff8880570fd870 (&sb->s_type->i_mutex_key#35){+.+.}-{4:4}, at: inode_lock include/linux/fs.h:867 [inline]
#1: ffff8880570fd870 (&sb->s_type->i_mutex_key#35){+.+.}-{4:4}, at: process_measurement+0x3d8/0x1a40 security/integrity/ima/ima_main.c:260
3 locks held by syz.5.284/8570:
#0: ffff88802902a428 (sb_writers#26){.+.+}-{0:0}, at: direct_splice_actor+0x49/0x160 fs/splice.c:1157
#1: ffff888057326ae0 (&sb->s_type->i_mutex_key#35){+.+.}-{4:4}, at: inode_lock include/linux/fs.h:867 [inline]
#1: ffff888057326ae0 (&sb->s_type->i_mutex_key#35){+.+.}-{4:4}, at: jfs_fsync+0x95/0x1d0 fs/jfs/file.c:28
#2: ffff888057326730 (&jfs_ip->commit_mutex){+.+.}-{4:4}, at: jfs_commit_inode+0x1ca/0x530 fs/jfs/inode.c:102
2 locks held by syz.5.284/8608:
#0: ffff88802902a428 (sb_writers#26){.+.+}-{0:0}, at: mnt_want_write+0x41/0x90 fs/namespace.c:557
#1: ffff8880573261a8 (&type->i_mutex_dir_key#18){++++}-{4:4}, at: inode_lock include/linux/fs.h:867 [inline]
#1: ffff8880573261a8 (&type->i_mutex_dir_key#18){++++}-{4:4}, at: open_last_lookups fs/namei.c:3804 [inline]
#1: ffff8880573261a8 (&type->i_mutex_dir_key#18){++++}-{4:4}, at: path_openat+0x8da/0x3830 fs/namei.c:4043
1 lock held by syz.5.284/8610:
#0: ffff8880573261a8 (&type->i_mutex_dir_key#18){++++}-{4:4}, at: inode_lock_shared include/linux/fs.h:882 [inline]
#0: ffff8880573261a8 (&type->i_mutex_dir_key#18){++++}-{4:4}, at: lookup_slow+0x46/0x70 fs/namei.c:1833
2 locks held by syz.1.356/9188:
#0: ffff888059d040e0 (&type->s_umount_key#99){++++}-{4:4}, at: __super_lock fs/super.c:59 [inline]
#0: ffff888059d040e0 (&type->s_umount_key#99){++++}-{4:4}, at: super_lock+0x2a9/0x3b0 fs/super.c:121
#1: ffff888024d407d0 (&bdi->wb_switch_rwsem){+.+.}-{4:4}, at: bdi_down_write_wb_switch_rwsem fs/fs-writeback.c:387 [inline]
#1: ffff888024d407d0 (&bdi->wb_switch_rwsem){+.+.}-{4:4}, at: sync_inodes_sb+0x19f/0xa10 fs/fs-writeback.c:2831
1 lock held by syz.9.363/9212:
#0: ffffffff8f4f7d48 (rtnl_mutex){+.+.}-{4:4}, at: tun_detach drivers/net/tun.c:633 [inline]
#0: ffffffff8f4f7d48 (rtnl_mutex){+.+.}-{4:4}, at: tun_chr_close+0x3e/0x1c0 drivers/net/tun.c:3396
1 lock held by syz.0.364/9216:
#0: ffffffff8e1427f8 (rcu_state.exp_mutex){+.+.}-{4:4}, at: exp_funnel_lock kernel/rcu/tree_exp.h:336 [inline]
#0: ffffffff8e1427f8 (rcu_state.exp_mutex){+.+.}-{4:4}, at: synchronize_rcu_expedited+0x3b7/0x730 kernel/rcu/tree_exp.h:998
1 lock held by dhcpcd-run-hook/9245:
3 locks held by dhcpcd-run-hook/9254:
=============================================
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 31 Comm: khungtaskd Not tainted 6.15.0-syzkaller-10402-g4cb6c8af8591 #0 PREEMPT(full)
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
Call Trace:
dump_stack_lvl+0x189/0x250 lib/dump_stack.c:120
nmi_cpu_backtrace+0x39e/0x3d0 lib/nmi_backtrace.c:113
nmi_trigger_cpumask_backtrace+0x17a/0x300 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:158 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:274 [inline]
watchdog+0xfee/0x1030 kernel/hung_task.c:437
kthread+0x711/0x8a0 kernel/kthread.c:464
ret_from_fork+0x3fc/0x770 arch/x86/kernel/process.c:148
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 9204 Comm: syz.4.361 Not tainted 6.15.0-syzkaller-10402-g4cb6c8af8591 #0 PREEMPT(full)
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
RIP: 0010:check_preemption_disabled+0x12/0x120 lib/smp_processor_id.c:13
Code: 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 55 41 57 41 56 53 48 83 ec 10 65 48 8b 05 9e e0 3b 07 <48> 89 44 24 08 65 8b 05 a6 e0 3b 07 65 8b 0d 9b e0 3b 07 f7 c1 ff
RSP: 0018:ffffc90022dbf440 EFLAGS: 00000082
RAX: 42c652084be77900 RBX: 0000000000000000 RCX: 42c652084be77900
RDX: 0000000000000001 RSI: ffffffff8db4702a RDI: ffffffff8be19340
RBP: ffffffff81727c05 R08: 0000000000000000 R09: ffffffff81727c05
R10: ffffc90022dbf638 R11: ffffffff81acdea0 R12: 0000000000000002
R13: ffffffff8e13ccc0 R14: 0000000000000000 R15: 0000000000000246
FS: 0000000000000000(0000) GS:ffff888125d99000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f8722e864e8 CR3: 000000000df36000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
lockdep_recursion_finish kernel/locking/lockdep.c:473 [inline]
lock_acquire+0x130/0x360 kernel/locking/lockdep.c:5873
rcu_lock_acquire include/linux/rcupdate.h:331 [inline]
rcu_read_lock include/linux/rcupdate.h:841 [inline]
class_rcu_constructor include/linux/rcupdate.h:1155 [inline]
unwind_next_frame+0xc2/0x2390 arch/x86/kernel/unwind_orc.c:479
arch_stack_walk+0x11c/0x150 arch/x86/kernel/stacktrace.c:25
stack_trace_save+0x9c/0xe0 kernel/stacktrace.c:122
save_stack+0xf7/0x1f0 mm/page_owner.c:156
__reset_page_owner+0x71/0x1f0 mm/page_owner.c:308
reset_page_owner include/linux/page_owner.h:25 [inline]
free_pages_prepare mm/page_alloc.c:1254 [inline]
__free_frozen_pages+0xc65/0xe50 mm/page_alloc.c:2717
vfree+0x1a6/0x330 mm/vmalloc.c:3416
kcov_put kernel/kcov.c:439 [inline]
kcov_close+0x28/0x50 kernel/kcov.c:535
__fput+0x449/0xa70 fs/file_table.c:465
task_work_run+0x1d4/0x260 kernel/task_work.c:227
exit_task_work include/linux/task_work.h:40 [inline]
do_exit+0x8d1/0x2550 kernel/exit.c:959
do_group_exit+0x21c/0x2d0 kernel/exit.c:1108
get_signal+0x125e/0x1310 kernel/signal.c:3034
arch_do_signal_or_restart+0x9a/0x750 arch/x86/kernel/signal.c:337
exit_to_user_mode_loop+0x75/0x110 kernel/entry/common.c:111
exit_to_user_mode_prepare include/linux/entry-common.h:330 [inline]
syscall_exit_to_user_mode_work include/linux/entry-common.h:414 [inline]
syscall_exit_to_user_mode include/linux/entry-common.h:449 [inline]
do_syscall_64+0x2bd/0x3b0 arch/x86/entry/syscall_64.c:100
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f52d498e969
Code: Unable to access opcode bytes at 0x7f52d498e93f.
RSP: 002b:00007fff9e35aa38 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: fffffffffffffdfc RBX: 000000000004b6fc RCX: 00007f52d498e969
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007f52d4bb5fac
RBP: 0000000000000fd2 R08: 7fffffffffffffff R09: 0000000c9e35ad2f
R10: 00007fff9e35ab30 R11: 0000000000000246 R12: 00007f52d4bb5fac
R13: 00007fff9e35ab30 R14: 000000000004c6ce R15: 00007fff9e35ab50