INFO: task jfsCommit:275 blocked for more than 143 seconds. Not tainted 5.15.184-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:jfsCommit state:D stack:29376 pid: 275 ppid: 2 flags:0x00004000 Call Trace: context_switch kernel/sched/core.c:5030 [inline] __schedule+0x11b8/0x43b0 kernel/sched/core.c:6376 schedule+0x11b/0x1e0 kernel/sched/core.c:6459 io_schedule+0x7c/0xd0 kernel/sched/core.c:8484 __lock_metapage+0x1a9/0x380 fs/jfs/jfs_metapage.c:49 lock_metapage fs/jfs/jfs_metapage.c:63 [inline] __get_metapage+0x43e/0x1060 fs/jfs/jfs_metapage.c:640 dbUpdatePMap+0x359/0xdb0 fs/jfs/jfs_dmap.c:494 txAllocPMap+0x57d/0x6b0 fs/jfs/jfs_txnmgr.c:2459 txUpdateMap+0x706/0x890 fs/jfs/jfs_txnmgr.c:2397 txLazyCommit fs/jfs/jfs_txnmgr.c:2698 [inline] jfs_lazycommit+0x437/0xb20 fs/jfs/jfs_txnmgr.c:2766 kthread+0x436/0x520 kernel/kthread.c:334 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:287 INFO: task jfsCommit:276 blocked for more than 144 seconds. Not tainted 5.15.184-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:jfsCommit state:D stack:28544 pid: 276 ppid: 2 flags:0x00004000 Call Trace: context_switch kernel/sched/core.c:5030 [inline] __schedule+0x11b8/0x43b0 kernel/sched/core.c:6376 schedule+0x11b/0x1e0 kernel/sched/core.c:6459 io_schedule+0x7c/0xd0 kernel/sched/core.c:8484 __lock_metapage+0x1a9/0x380 fs/jfs/jfs_metapage.c:49 lock_metapage fs/jfs/jfs_metapage.c:63 [inline] __get_metapage+0x43e/0x1060 fs/jfs/jfs_metapage.c:640 dbUpdatePMap+0x359/0xdb0 fs/jfs/jfs_dmap.c:494 txAllocPMap+0x57d/0x6b0 fs/jfs/jfs_txnmgr.c:2459 txUpdateMap+0x706/0x890 fs/jfs/jfs_txnmgr.c:2397 txLazyCommit fs/jfs/jfs_txnmgr.c:2698 [inline] jfs_lazycommit+0x437/0xb20 fs/jfs/jfs_txnmgr.c:2766 kthread+0x436/0x520 kernel/kthread.c:334 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:287 INFO: task syz-executor:4664 blocked for more than 144 seconds. Not tainted 5.15.184-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor state:D stack:21768 pid: 4664 ppid: 1 flags:0x00004002 Call Trace: context_switch kernel/sched/core.c:5030 [inline] __schedule+0x11b8/0x43b0 kernel/sched/core.c:6376 schedule+0x11b/0x1e0 kernel/sched/core.c:6459 jfs_flush_journal+0x70d/0xeb0 fs/jfs/jfs_logmgr.c:1572 jfs_sync_fs+0x79/0xa0 fs/jfs/super.c:689 sync_filesystem+0x1be/0x220 fs/sync.c:66 generic_shutdown_super+0x6b/0x300 fs/super.c:448 kill_block_super+0x7c/0xe0 fs/super.c:1427 deactivate_locked_super+0x93/0xf0 fs/super.c:335 cleanup_mnt+0x418/0x4d0 fs/namespace.c:1143 task_work_run+0x125/0x1a0 kernel/task_work.c:188 exit_task_work include/linux/task_work.h:33 [inline] do_exit+0x616/0x20a0 kernel/exit.c:874 do_group_exit+0x12e/0x300 kernel/exit.c:996 __do_sys_exit_group kernel/exit.c:1007 [inline] __se_sys_exit_group kernel/exit.c:1005 [inline] __x64_sys_exit_group+0x3b/0x40 kernel/exit.c:1005 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x66/0xd0 RIP: 0033:0x7fe8e038ed29 RSP: 002b:00007fffbba9f938 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 RAX: ffffffffffffffda RBX: 00007fe8e040a919 RCX: 00007fe8e038ed29 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000001 RBP: 0000000000000002 R08: 00007fffbba9d6d7 R09: 00007fffbbaa0bf0 R10: 0000000000000000 R11: 0000000000000246 R12: 00007fffbbaa0bf0 R13: 00007fe8e040a8f4 R14: 00007fffbbaa1cb0 R15: 0000000000000001 INFO: task syz-executor:4673 blocked for more than 145 seconds. Not tainted 5.15.184-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor state:D stack:21984 pid: 4673 ppid: 1 flags:0x00004002 Call Trace: context_switch kernel/sched/core.c:5030 [inline] __schedule+0x11b8/0x43b0 kernel/sched/core.c:6376 schedule+0x11b/0x1e0 kernel/sched/core.c:6459 jfs_flush_journal+0x70d/0xeb0 fs/jfs/jfs_logmgr.c:1572 jfs_sync_fs+0x79/0xa0 fs/jfs/super.c:689 sync_filesystem+0x1be/0x220 fs/sync.c:66 generic_shutdown_super+0x6b/0x300 fs/super.c:448 kill_block_super+0x7c/0xe0 fs/super.c:1427 deactivate_locked_super+0x93/0xf0 fs/super.c:335 cleanup_mnt+0x418/0x4d0 fs/namespace.c:1143 task_work_run+0x125/0x1a0 kernel/task_work.c:188 exit_task_work include/linux/task_work.h:33 [inline] do_exit+0x616/0x20a0 kernel/exit.c:874 do_group_exit+0x12e/0x300 kernel/exit.c:996 __do_sys_exit_group kernel/exit.c:1007 [inline] __se_sys_exit_group kernel/exit.c:1005 [inline] __x64_sys_exit_group+0x3b/0x40 kernel/exit.c:1005 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x66/0xd0 RIP: 0033:0x7fa16e4a5d29 RSP: 002b:00007fff23baf688 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 RAX: ffffffffffffffda RBX: 00007fa16e521919 RCX: 00007fa16e4a5d29 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000001 RBP: 0000000000000002 R08: 00007fff23bad427 R09: 00007fff23bb0940 R10: 0000000000000000 R11: 0000000000000246 R12: 00007fff23bb0940 R13: 00007fa16e5218f4 R14: 00007fff23bb1a00 R15: 0000000000000001 INFO: task syz-executor:4676 blocked for more than 145 seconds. Not tainted 5.15.184-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor state:D stack:21984 pid: 4676 ppid: 1 flags:0x00004002 Call Trace: context_switch kernel/sched/core.c:5030 [inline] __schedule+0x11b8/0x43b0 kernel/sched/core.c:6376 schedule+0x11b/0x1e0 kernel/sched/core.c:6459 jfs_flush_journal+0x70d/0xeb0 fs/jfs/jfs_logmgr.c:1572 jfs_sync_fs+0x79/0xa0 fs/jfs/super.c:689 sync_filesystem+0x1be/0x220 fs/sync.c:66 generic_shutdown_super+0x6b/0x300 fs/super.c:448 kill_block_super+0x7c/0xe0 fs/super.c:1427 deactivate_locked_super+0x93/0xf0 fs/super.c:335 cleanup_mnt+0x418/0x4d0 fs/namespace.c:1143 task_work_run+0x125/0x1a0 kernel/task_work.c:188 exit_task_work include/linux/task_work.h:33 [inline] do_exit+0x616/0x20a0 kernel/exit.c:874 do_group_exit+0x12e/0x300 kernel/exit.c:996 __do_sys_exit_group kernel/exit.c:1007 [inline] __se_sys_exit_group kernel/exit.c:1005 [inline] __x64_sys_exit_group+0x3b/0x40 kernel/exit.c:1005 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x66/0xd0 RIP: 0033:0x7fe9ced22d29 RSP: 002b:00007fffa952dc88 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 RAX: ffffffffffffffda RBX: 00007fe9ced9e919 RCX: 00007fe9ced22d29 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000001 RBP: 0000000000000002 R08: 00007fffa952ba27 R09: 00007fffa952ef40 R10: 0000000000000000 R11: 0000000000000246 R12: 00007fffa952ef40 R13: 00007fe9ced9e8f4 R14: 00007fffa9530000 R15: 0000000000000001 Showing all locks held in the system: 1 lock held by khungtaskd/27: #0: ffffffff8c11c060 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x0/0x30 1 lock held by dhcpcd/3839: 2 locks held by getty/3935: #0: ffff88807f571098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x21/0x70 drivers/tty/tty_ldisc.c:252 #1: ffffc900026362e8 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x5ba/0x1a30 drivers/tty/n_tty.c:2158 2 locks held by kworker/1:8/4265: #0: ffff888016872138 ((wq_completion)rcu_gp){+.+.}-{0:0}, at: process_one_work+0x760/0x1000 kernel/workqueue.c:-1 #1: ffffc9000315fd00 ((work_completion)(&rew.rew_work)){+.+.}-{0:0}, at: process_one_work+0x7a3/0x1000 kernel/workqueue.c:2285 1 lock held by syz-executor/4664: #0: ffff88807df520e0 (&type->s_umount_key#54){+.+.}-{3:3}, at: deactivate_super+0xa0/0xd0 fs/super.c:365 2 locks held by syz-executor/4665: #0: ffff888022de60e0 (&type->s_umount_key#54){+.+.}-{3:3}, at: deactivate_super+0xa0/0xd0 fs/super.c:365 #1: ffffffff8c4c40a8 (jfs_log_mutex){+.+.}-{3:3}, at: lmLogClose+0xb0/0x520 fs/jfs/jfs_logmgr.c:1452 1 lock held by syz-executor/4673: #0: ffff8880581080e0 (&type->s_umount_key#54){+.+.}-{3:3}, at: deactivate_super+0xa0/0xd0 fs/super.c:365 1 lock held by syz-executor/4676: #0: ffff8880238300e0 (&type->s_umount_key#54){+.+.}-{3:3}, at: deactivate_super+0xa0/0xd0 fs/super.c:365 1 lock held by syz-executor/5150: #0: ffff888079b2e0e0 (&type->s_umount_key#54){+.+.}-{3:3}, at: deactivate_super+0xa0/0xd0 fs/super.c:365 2 locks held by syz-executor/5371: #0: ffff8880599420e0 (&type->s_umount_key#54){+.+.}-{3:3}, at: deactivate_super+0xa0/0xd0 fs/super.c:365 #1: ffffffff8c4c40a8 (jfs_log_mutex){+.+.}-{3:3}, at: lmLogClose+0xb0/0x520 fs/jfs/jfs_logmgr.c:1452 1 lock held by syz-executor/5372: #0: ffff888058b260e0 (&type->s_umount_key#54){+.+.}-{3:3}, at: deactivate_super+0xa0/0xd0 fs/super.c:365 2 locks held by syz-executor/5448: #0: ffff88807d2d20e0 (&type->s_umount_key#54){+.+.}-{3:3}, at: deactivate_super+0xa0/0xd0 fs/super.c:365 #1: ffffffff8c4c40a8 (jfs_log_mutex){+.+.}-{3:3}, at: lmLogClose+0xb0/0x520 fs/jfs/jfs_logmgr.c:1452 2 locks held by syz-executor/5449: #0: ffff88807c32e0e0 (&type->s_umount_key#54){+.+.}-{3:3}, at: deactivate_super+0xa0/0xd0 fs/super.c:365 #1: ffffffff8c4c40a8 (jfs_log_mutex){+.+.}-{3:3}, at: lmLogClose+0xb0/0x520 fs/jfs/jfs_logmgr.c:1452 1 lock held by syz-executor/6044: #0: ffff8880772820e0 (&type->s_umount_key#54){+.+.}-{3:3}, at: deactivate_super+0xa0/0xd0 fs/super.c:365 1 lock held by syz.2.347/7882: #0: ffff888147489468 (&lo->lo_mutex){+.+.}-{3:3}, at: loop_set_status+0x7c/0x9b0 drivers/block/loop.c:1522 1 lock held by syz.1.348/7881: #0: ffff88802018e468 (&lo->lo_mutex){+.+.}-{3:3}, at: loop_set_status+0x7c/0x9b0 drivers/block/loop.c:1522 1 lock held by syz.0.349/7883: #0: ffff88802018b468 (&lo->lo_mutex){+.+.}-{3:3}, at: loop_set_status+0x7c/0x9b0 drivers/block/loop.c:1522 1 lock held by syz.3.350/7899: #0: ffff88814748c468 (&lo->lo_mutex){+.+.}-{3:3}, at: loop_set_status+0x7c/0x9b0 drivers/block/loop.c:1522 2 locks held by dhcpcd/7902: #0: ffff888023e5a120 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: lock_sock include/net/sock.h:1694 [inline] #0: ffff888023e5a120 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: packet_do_bind+0x35/0xce0 net/packet/af_packet.c:3213 #1: ffffffff8c120ae8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:322 [inline] #1: ffffffff8c120ae8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x320/0x6b0 kernel/rcu/tree_exp.h:845 2 locks held by dhcpcd/7903: #0: ffff88805508c120 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: lock_sock include/net/sock.h:1694 [inline] #0: ffff88805508c120 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: packet_do_bind+0x35/0xce0 net/packet/af_packet.c:3213 #1: ffffffff8c120ae8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:290 [inline] #1: ffffffff8c120ae8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x347/0x6b0 kernel/rcu/tree_exp.h:845 1 lock held by dhcpcd/7904: #0: ffff888059936120 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: lock_sock include/net/sock.h:1694 [inline] #0: ffff888059936120 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: packet_do_bind+0x35/0xce0 net/packet/af_packet.c:3213 1 lock held by dhcpcd/7905: #0: ffff88801ec82120 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: lock_sock include/net/sock.h:1694 [inline] #0: ffff88801ec82120 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: packet_do_bind+0x35/0xce0 net/packet/af_packet.c:3213 1 lock held by dhcpcd/7906: #0: ffff88807561a120 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: lock_sock include/net/sock.h:1694 [inline] #0: ffff88807561a120 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: packet_do_bind+0x35/0xce0 net/packet/af_packet.c:3213 1 lock held by dhcpcd/7907: #0: ffff888058004120 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: lock_sock include/net/sock.h:1694 [inline] #0: ffff888058004120 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: packet_do_bind+0x35/0xce0 net/packet/af_packet.c:3213 1 lock held by dhcpcd/7908: #0: ffff88806fc92120 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: lock_sock include/net/sock.h:1694 [inline] #0: ffff88806fc92120 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: packet_do_bind+0x35/0xce0 net/packet/af_packet.c:3213 1 lock held by dhcpcd/7909: #0: ffff88806fc96120 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: lock_sock include/net/sock.h:1694 [inline] #0: ffff88806fc96120 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: packet_do_bind+0x35/0xce0 net/packet/af_packet.c:3213 1 lock held by dhcpcd/7910: #0: ffff88806fc94120 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: lock_sock include/net/sock.h:1694 [inline] #0: ffff88806fc94120 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: packet_do_bind+0x35/0xce0 net/packet/af_packet.c:3213 1 lock held by dhcpcd/7911: #0: ffff888074ac6120 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: lock_sock include/net/sock.h:1694 [inline] #0: ffff888074ac6120 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: packet_do_bind+0x35/0xce0 net/packet/af_packet.c:3213 1 lock held by dhcpcd/7912: #0: ffff88807af2e120 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: lock_sock include/net/sock.h:1694 [inline] #0: ffff88807af2e120 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: packet_do_bind+0x35/0xce0 net/packet/af_packet.c:3213 1 lock held by dhcpcd/7913: #0: ffff88807af2a120 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: lock_sock include/net/sock.h:1694 [inline] #0: ffff88807af2a120 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: packet_do_bind+0x35/0xce0 net/packet/af_packet.c:3213 1 lock held by dhcpcd/7914: #0: ffff8880592c0120 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: lock_sock include/net/sock.h:1694 [inline] #0: ffff8880592c0120 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: packet_do_bind+0x35/0xce0 net/packet/af_packet.c:3213 1 lock held by dhcpcd/7915: #0: ffff888077f70120 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: lock_sock include/net/sock.h:1694 [inline] #0: ffff888077f70120 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: packet_do_bind+0x35/0xce0 net/packet/af_packet.c:3213 ============================================= NMI backtrace for cpu 1 CPU: 1 PID: 27 Comm: khungtaskd Not tainted 5.15.184-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 Call Trace: dump_stack_lvl+0x168/0x230 lib/dump_stack.c:106 nmi_cpu_backtrace+0x397/0x3d0 lib/nmi_backtrace.c:111 nmi_trigger_cpumask_backtrace+0x163/0x280 lib/nmi_backtrace.c:62 trigger_all_cpu_backtrace include/linux/nmi.h:148 [inline] check_hung_uninterruptible_tasks kernel/hung_task.c:212 [inline] watchdog+0xe0f/0xe50 kernel/hung_task.c:369 kthread+0x436/0x520 kernel/kthread.c:334 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:287 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 5075 Comm: udevd Not tainted 5.15.184-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 RIP: 0010:find_held_lock kernel/locking/lockdep.c:5115 [inline] RIP: 0010:__lock_release kernel/locking/lockdep.c:5300 [inline] RIP: 0010:lock_release+0x1ed/0x870 kernel/locking/lockdep.c:5643 Code: 44 8d 79 ff 48 8d 9f f0 0a 00 00 4d 63 f7 48 89 4c 24 28 83 f9 32 0f 83 ca 04 00 00 4b 8d 04 b6 4c 8d 24 c3 48 89 c3 4c 89 e7 <48> 8b 74 24 08 e8 89 c9 44 08 44 89 7c 24 3c 44 89 fa 85 c0 0f 84 RSP: 0018:ffffc9000305fd80 EFLAGS: 00000097 RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001 RDX: 0000000000000000 RSI: ffffffff8a0b1fc0 RDI: ffff888028090af0 RBP: ffffc9000305fe88 R08: dffffc0000000000 R09: fffffbfff1ad1556 R10: fffffbfff1ad1556 R11: 1ffffffff1ad1555 R12: ffff888028090af0 R13: dffffc0000000000 R14: 0000000000000000 R15: 0000000000000000 FS: 00007f759b348880(0000) GS:ffff8880b9000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f759a9fd000 CR3: 0000000073791000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: do_write_seqcount_end include/linux/seqlock.h:565 [inline] vtime_user_enter+0x1f0/0x2d0 kernel/sched/cputime.c:718 __context_tracking_enter+0x60/0x90 kernel/context_tracking.c:82 user_enter_irqoff include/linux/context_tracking.h:41 [inline] __exit_to_user_mode kernel/entry/common.c:136 [inline] syscall_exit_to_user_mode+0x3c/0x40 kernel/entry/common.c:309 do_syscall_64+0x58/0xa0 arch/x86/entry/common.c:86 entry_SYSCALL_64_after_hwframe+0x66/0xd0 RIP: 0033:0x7f759b4a3be7 Code: 66 89 04 24 31 c0 e8 68 cc ff ff 48 83 c4 20 5b c3 48 8b 05 03 c2 0d 00 64 c7 00 0d 00 00 00 eb b0 66 90 b8 08 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 01 c3 48 8b 15 e1 c1 0d 00 f7 d8 64 89 02 48 RSP: 002b:00007fff3e9ea448 EFLAGS: 00000246 ORIG_RAX: 0000000000000008 RAX: 0000000000000000 RBX: 0000000000000200 RCX: 00007f759b4a3be7 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000009 RBP: 000055bc67748000 R08: 0000000000000000 R09: 0000000000000200 R10: 000055bc67748060 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 000055bc67748060 R15: 0000000000ffe000