INFO: task syz-executor121:8438 blocked for more than 143 seconds. Not tainted 5.14.0-rc6-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor121 state:D stack:28176 pid: 8438 ppid: 8435 flags:0x00000004 Call Trace: context_switch kernel/sched/core.c:4681 [inline] __schedule+0x93a/0x26f0 kernel/sched/core.c:5938 schedule+0xd3/0x270 kernel/sched/core.c:6017 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6076 __mutex_lock_common kernel/locking/mutex.c:1036 [inline] __mutex_lock+0x7b6/0x10a0 kernel/locking/mutex.c:1104 misc_open+0x55/0x4a0 drivers/char/misc.c:107 chrdev_open+0x266/0x770 fs/char_dev.c:414 do_dentry_open+0x4c8/0x11d0 fs/open.c:826 do_open fs/namei.c:3374 [inline] path_openat+0x1c23/0x27f0 fs/namei.c:3507 do_filp_open+0x1aa/0x400 fs/namei.c:3534 do_sys_openat2+0x16d/0x420 fs/open.c:1204 do_sys_open fs/open.c:1220 [inline] __do_sys_openat fs/open.c:1236 [inline] __se_sys_openat fs/open.c:1231 [inline] __x64_sys_openat+0x13f/0x1f0 fs/open.c:1231 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x4031a7 RSP: 002b:00007fff3ddb8190 EFLAGS: 00000246 ORIG_RAX: 0000000000000101 RAX: ffffffffffffffda RBX: 0000000020000440 RCX: 00000000004031a7 RDX: 0000000000000002 RSI: 000000000048803b RDI: 00000000ffffff9c RBP: 000000000048803b R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002 R13: 0000000000000000 R14: 0000000000000076 R15: 00007fff3ddba2c0 INFO: task syz-executor121:8440 blocked for more than 143 seconds. Not tainted 5.14.0-rc6-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor121 state:D stack:28176 pid: 8440 ppid: 8434 flags:0x00000004 Call Trace: context_switch kernel/sched/core.c:4681 [inline] __schedule+0x93a/0x26f0 kernel/sched/core.c:5938 schedule+0xd3/0x270 kernel/sched/core.c:6017 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6076 __mutex_lock_common kernel/locking/mutex.c:1036 [inline] __mutex_lock+0x7b6/0x10a0 kernel/locking/mutex.c:1104 misc_open+0x55/0x4a0 drivers/char/misc.c:107 chrdev_open+0x266/0x770 fs/char_dev.c:414 do_dentry_open+0x4c8/0x11d0 fs/open.c:826 do_open fs/namei.c:3374 [inline] path_openat+0x1c23/0x27f0 fs/namei.c:3507 do_filp_open+0x1aa/0x400 fs/namei.c:3534 do_sys_openat2+0x16d/0x420 fs/open.c:1204 do_sys_open fs/open.c:1220 [inline] __do_sys_openat fs/open.c:1236 [inline] __se_sys_openat fs/open.c:1231 [inline] __x64_sys_openat+0x13f/0x1f0 fs/open.c:1231 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x4031a7 RSP: 002b:00007fff3ddb8190 EFLAGS: 00000246 ORIG_RAX: 0000000000000101 RAX: ffffffffffffffda RBX: 0000000020000440 RCX: 00000000004031a7 RDX: 0000000000000002 RSI: 000000000048803b RDI: 00000000ffffff9c RBP: 000000000048803b R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002 R13: 0000000000000000 R14: 0000000000000076 R15: 00007fff3ddba2c0 INFO: task syz-executor121:8441 blocked for more than 143 seconds. Not tainted 5.14.0-rc6-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor121 state:D stack:28176 pid: 8441 ppid: 8436 flags:0x00000004 Call Trace: context_switch kernel/sched/core.c:4681 [inline] __schedule+0x93a/0x26f0 kernel/sched/core.c:5938 schedule+0xd3/0x270 kernel/sched/core.c:6017 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6076 __mutex_lock_common kernel/locking/mutex.c:1036 [inline] __mutex_lock+0x7b6/0x10a0 kernel/locking/mutex.c:1104 misc_open+0x55/0x4a0 drivers/char/misc.c:107 chrdev_open+0x266/0x770 fs/char_dev.c:414 do_dentry_open+0x4c8/0x11d0 fs/open.c:826 do_open fs/namei.c:3374 [inline] path_openat+0x1c23/0x27f0 fs/namei.c:3507 do_filp_open+0x1aa/0x400 fs/namei.c:3534 do_sys_openat2+0x16d/0x420 fs/open.c:1204 do_sys_open fs/open.c:1220 [inline] __do_sys_openat fs/open.c:1236 [inline] __se_sys_openat fs/open.c:1231 [inline] __x64_sys_openat+0x13f/0x1f0 fs/open.c:1231 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x4031a7 RSP: 002b:00007fff3ddb8190 EFLAGS: 00000246 ORIG_RAX: 0000000000000101 RAX: ffffffffffffffda RBX: 0000000020000440 RCX: 00000000004031a7 RDX: 0000000000000002 RSI: 000000000048803b RDI: 00000000ffffff9c RBP: 000000000048803b R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002 R13: 0000000000000000 R14: 0000000000000076 R15: 00007fff3ddba2c0 INFO: task syz-executor121:8506 blocked for more than 144 seconds. Not tainted 5.14.0-rc6-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor121 state:D stack:28176 pid: 8506 ppid: 8433 flags:0x00004004 Call Trace: context_switch kernel/sched/core.c:4681 [inline] __schedule+0x93a/0x26f0 kernel/sched/core.c:5938 schedule+0xd3/0x270 kernel/sched/core.c:6017 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6076 __mutex_lock_common kernel/locking/mutex.c:1036 [inline] __mutex_lock+0x7b6/0x10a0 kernel/locking/mutex.c:1104 misc_open+0x55/0x4a0 drivers/char/misc.c:107 chrdev_open+0x266/0x770 fs/char_dev.c:414 do_dentry_open+0x4c8/0x11d0 fs/open.c:826 do_open fs/namei.c:3374 [inline] path_openat+0x1c23/0x27f0 fs/namei.c:3507 do_filp_open+0x1aa/0x400 fs/namei.c:3534 do_sys_openat2+0x16d/0x420 fs/open.c:1204 do_sys_open fs/open.c:1220 [inline] __do_sys_openat fs/open.c:1236 [inline] __se_sys_openat fs/open.c:1231 [inline] __x64_sys_openat+0x13f/0x1f0 fs/open.c:1231 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x4453d9 RSP: 002b:00007fff3ddba2a8 EFLAGS: 00000246 ORIG_RAX: 0000000000000101 RAX: ffffffffffffffda RBX: 00000000000f4240 RCX: 00000000004453d9 RDX: 0000000000020601 RSI: 00000000200003c0 RDI: ffffffffffffff9c RBP: 0000000000000000 R08: 00007fff3ddb9d20 R09: 0000000000000001 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000007884d R13: 00007fff3ddba2bc R14: 00007fff3ddba2d0 R15: 00007fff3ddba2c0 INFO: task syz-executor121:8508 blocked for more than 144 seconds. Not tainted 5.14.0-rc6-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor121 state:D stack:28176 pid: 8508 ppid: 8430 flags:0x00000004 Call Trace: context_switch kernel/sched/core.c:4681 [inline] __schedule+0x93a/0x26f0 kernel/sched/core.c:5938 schedule+0xd3/0x270 kernel/sched/core.c:6017 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6076 __mutex_lock_common kernel/locking/mutex.c:1036 [inline] __mutex_lock+0x7b6/0x10a0 kernel/locking/mutex.c:1104 misc_open+0x55/0x4a0 drivers/char/misc.c:107 chrdev_open+0x266/0x770 fs/char_dev.c:414 do_dentry_open+0x4c8/0x11d0 fs/open.c:826 do_open fs/namei.c:3374 [inline] path_openat+0x1c23/0x27f0 fs/namei.c:3507 do_filp_open+0x1aa/0x400 fs/namei.c:3534 do_sys_openat2+0x16d/0x420 fs/open.c:1204 do_sys_open fs/open.c:1220 [inline] __do_sys_openat fs/open.c:1236 [inline] __se_sys_openat fs/open.c:1231 [inline] __x64_sys_openat+0x13f/0x1f0 fs/open.c:1231 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x4453d9 RSP: 002b:00007fff3ddba2a8 EFLAGS: 00000246 ORIG_RAX: 0000000000000101 RAX: ffffffffffffffda RBX: 00000000000f4240 RCX: 00000000004453d9 RDX: 0000000000020601 RSI: 00000000200003c0 RDI: ffffffffffffff9c RBP: 0000000000000000 R08: 00007fff3ddb9d20 R09: 0000000000000001 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000007884a R13: 00007fff3ddba2bc R14: 00007fff3ddba2d0 R15: 00007fff3ddba2c0 Showing all locks held in the system: 1 lock held by khungtaskd/1652: #0: ffffffff8b97c280 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x53/0x260 kernel/locking/lockdep.c:6446 1 lock held by in:imklog/8135: #0: ffff88801c636870 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0xe9/0x100 fs/file.c:974 1 lock held by syz-executor121/8438: #0: ffffffff8c3b6308 (misc_mtx){+.+.}-{3:3}, at: misc_open+0x55/0x4a0 drivers/char/misc.c:107 1 lock held by syz-executor121/8440: #0: ffffffff8c3b6308 (misc_mtx){+.+.}-{3:3}, at: misc_open+0x55/0x4a0 drivers/char/misc.c:107 1 lock held by syz-executor121/8441: #0: ffffffff8c3b6308 (misc_mtx){+.+.}-{3:3}, at: misc_open+0x55/0x4a0 drivers/char/misc.c:107 5 locks held by kworker/0:0/8444: #0: ffff888018abe938 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] #0: ffff888018abe938 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: atomic64_set include/asm-generic/atomic-instrumented.h:620 [inline] #0: ffff888018abe938 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: atomic_long_set include/asm-generic/atomic-long.h:41 [inline] #0: ffff888018abe938 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:617 [inline] #0: ffff888018abe938 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:644 [inline] #0: ffff888018abe938 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work+0x871/0x1630 kernel/workqueue.c:2247 #1: ffffc9000169fdb0 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work+0x8a5/0x1630 kernel/workqueue.c:2251 #2: ffff888021407220 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:756 [inline] #2: ffff888021407220 (&dev->mutex){....}-{3:3}, at: hub_event+0x1c1/0x4330 drivers/usb/core/hub.c:5662 #3: ffff88801d961220 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:756 [inline] #3: ffff88801d961220 (&dev->mutex){....}-{3:3}, at: __device_attach+0x7a/0x4a0 drivers/base/dd.c:940 #4: ffff888028f3b1a8 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:756 [inline] #4: ffff888028f3b1a8 (&dev->mutex){....}-{3:3}, at: __device_attach+0x7a/0x4a0 drivers/base/dd.c:940 5 locks held by kworker/0:2/8452: #0: ffff888018abe938 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] #0: ffff888018abe938 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: atomic64_set include/asm-generic/atomic-instrumented.h:620 [inline] #0: ffff888018abe938 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: atomic_long_set include/asm-generic/atomic-long.h:41 [inline] #0: ffff888018abe938 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:617 [inline] #0: ffff888018abe938 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:644 [inline] #0: ffff888018abe938 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work+0x871/0x1630 kernel/workqueue.c:2247 #1: ffffc9000172fdb0 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work+0x8a5/0x1630 kernel/workqueue.c:2251 #2: ffff8880212ef220 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:756 [inline] #2: ffff8880212ef220 (&dev->mutex){....}-{3:3}, at: hub_event+0x1c1/0x4330 drivers/usb/core/hub.c:5662 #3: ffff88801db87220 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:756 [inline] #3: ffff88801db87220 (&dev->mutex){....}-{3:3}, at: __device_attach+0x7a/0x4a0 drivers/base/dd.c:940 #4: ffff888028f3a1a8 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:756 [inline] #4: ffff888028f3a1a8 (&dev->mutex){....}-{3:3}, at: __device_attach+0x7a/0x4a0 drivers/base/dd.c:940 5 locks held by kworker/0:4/8453: #0: ffff888018abe938 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] #0: ffff888018abe938 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: atomic64_set include/asm-generic/atomic-instrumented.h:620 [inline] #0: ffff888018abe938 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: atomic_long_set include/asm-generic/atomic-long.h:41 [inline] #0: ffff888018abe938 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:617 [inline] #0: ffff888018abe938 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:644 [inline] #0: ffff888018abe938 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work+0x871/0x1630 kernel/workqueue.c:2247 #1: ffffc900016cfdb0 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work+0x8a5/0x1630 kernel/workqueue.c:2251 #2: ffff888021307220 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:756 [inline] #2: ffff888021307220 (&dev->mutex){....}-{3:3}, at: hub_event+0x1c1/0x4330 drivers/usb/core/hub.c:5662 #3: ffff88801db86220 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:756 [inline] #3: ffff88801db86220 (&dev->mutex){....}-{3:3}, at: __device_attach+0x7a/0x4a0 drivers/base/dd.c:940 #4: ffff888028f3e1a8 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:756 [inline] #4: ffff888028f3e1a8 (&dev->mutex){....}-{3:3}, at: __device_attach+0x7a/0x4a0 drivers/base/dd.c:940 2 locks held by syz-executor121/8503: #0: ffffffff8c3b6308 (misc_mtx){+.+.}-{3:3}, at: misc_open+0x55/0x4a0 drivers/char/misc.c:107 #1: ffffffff8b84c428 (system_transition_mutex){+.+.}-{3:3}, at: snapshot_open+0x3b/0x2a0 kernel/power/user.c:54 1 lock held by syz-executor121/8506: #0: ffffffff8c3b6308 (misc_mtx){+.+.}-{3:3}, at: misc_open+0x55/0x4a0 drivers/char/misc.c:107 1 lock held by syz-executor121/8508: #0: ffffffff8c3b6308 (misc_mtx){+.+.}-{3:3}, at: misc_open+0x55/0x4a0 drivers/char/misc.c:107 ============================================= NMI backtrace for cpu 1 CPU: 1 PID: 1652 Comm: khungtaskd Not tainted 5.14.0-rc6-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+0xcd/0x134 lib/dump_stack.c:105 nmi_cpu_backtrace.cold+0x44/0xd7 lib/nmi_backtrace.c:105 nmi_trigger_cpumask_backtrace+0x1b3/0x230 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+0xd0a/0xfc0 kernel/hung_task.c:295 kthread+0x3e5/0x4d0 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: 25 Comm: kworker/u4:2 Not tainted 5.14.0-rc6-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Workqueue: events_unbound toggle_allocation_gate RIP: 0010:memory_is_nonzero mm/kasan/generic.c:101 [inline] RIP: 0010:memory_is_poisoned_n mm/kasan/generic.c:128 [inline] RIP: 0010:memory_is_poisoned mm/kasan/generic.c:159 [inline] RIP: 0010:check_region_inline mm/kasan/generic.c:180 [inline] RIP: 0010:kasan_check_range+0x63/0x180 mm/kasan/generic.c:189 Code: 00 00 00 00 00 fc ff df 4d 89 ca 48 c1 ed 03 49 c1 ea 03 48 01 c5 49 01 c2 48 89 e8 49 8d 5a 01 48 89 da 48 29 ea 48 83 fa 10 <7e> 63 41 89 eb 41 83 e3 07 75 74 4c 8d 5a 07 48 85 d2 4c 0f 49 da RSP: 0018:ffffc90000dff770 EFLAGS: 00000083 RAX: fffffbfff1f9a91e RBX: fffffbfff1f9a91f RCX: ffffffff815acce2 RDX: 0000000000000001 RSI: 0000000000000008 RDI: ffffffff8fcd48f0 RBP: fffffbfff1f9a91e R08: 0000000000000000 R09: ffffffff8fcd48f7 R10: fffffbfff1f9a91e R11: 000000000000003f R12: ffff888011b8df78 R13: ffff888011b8d4c0 R14: 0000000000000000 R15: 9003074182af4f12 FS: 0000000000000000(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f1701a17000 CR3: 000000000b68e000 CR4: 0000000000350ef0 Call Trace: instrument_atomic_read include/linux/instrumented.h:71 [inline] test_bit include/asm-generic/bitops/instrumented-non-atomic.h:134 [inline] hlock_class kernel/locking/lockdep.c:199 [inline] __lock_acquire+0xbc2/0x54a0 kernel/locking/lockdep.c:5012 lock_acquire kernel/locking/lockdep.c:5625 [inline] lock_acquire+0x1ab/0x510 kernel/locking/lockdep.c:5590 __raw_spin_lock include/linux/spinlock_api_smp.h:142 [inline] _raw_spin_lock+0x2a/0x40 kernel/locking/spinlock.c:151 spin_lock include/linux/spinlock.h:354 [inline] __get_locked_pte+0x2b6/0x4d0 mm/memory.c:1736 get_locked_pte include/linux/mm.h:2051 [inline] __text_poke+0x1ab/0x8c0 arch/x86/kernel/alternative.c:817 text_poke_bp_batch+0x187/0x560 arch/x86/kernel/alternative.c:1111 text_poke_flush arch/x86/kernel/alternative.c:1268 [inline] text_poke_flush arch/x86/kernel/alternative.c:1265 [inline] text_poke_finish+0x16/0x30 arch/x86/kernel/alternative.c:1275 arch_jump_label_transform_apply+0x13/0x20 arch/x86/kernel/jump_label.c:146 jump_label_update+0x1d5/0x430 kernel/jump_label.c:830 static_key_disable_cpuslocked+0x152/0x1b0 kernel/jump_label.c:207 static_key_disable+0x16/0x20 kernel/jump_label.c:215 toggle_allocation_gate mm/kfence/core.c:637 [inline] toggle_allocation_gate+0x185/0x390 mm/kfence/core.c:615 process_one_work+0x98d/0x1630 kernel/workqueue.c:2276 worker_thread+0x658/0x11f0 kernel/workqueue.c:2422 kthread+0x3e5/0x4d0 kernel/kthread.c:319 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295 ---------------- Code disassembly (best guess): 0: 00 00 add %al,(%rax) 2: 00 00 add %al,(%rax) 4: 00 fc add %bh,%ah 6: ff (bad) 7: df 4d 89 fisttps -0x77(%rbp) a: ca 48 c1 lret $0xc148 d: ed in (%dx),%eax e: 03 49 c1 add -0x3f(%rcx),%ecx 11: ea (bad) 12: 03 48 01 add 0x1(%rax),%ecx 15: c5 49 01 (bad) 18: c2 48 89 retq $0x8948 1b: e8 49 8d 5a 01 callq 0x15a8d69 20: 48 89 da mov %rbx,%rdx 23: 48 29 ea sub %rbp,%rdx 26: 48 83 fa 10 cmp $0x10,%rdx 2a: 7e 63 jle 0x8f <-- trapping instruction 2c: 41 89 eb mov %ebp,%r11d 2f: 41 83 e3 07 and $0x7,%r11d 33: 75 74 jne 0xa9 35: 4c 8d 5a 07 lea 0x7(%rdx),%r11 39: 48 85 d2 test %rdx,%rdx 3c: 4c 0f 49 da cmovns %rdx,%r11