Extracting prog: 2m29.447676639s Minimizing prog: 6m4.286231036s Simplifying prog options: 0s Extracting C: 34.999488411s Simplifying C: 11m2.717970414s extracting reproducer from 1 programs testing a last program of every proc single: executing 1 programs separately with timeout 30s testing program (duration=30s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mq_open-mq_unlink detailed listing: executing program 0: mq_open(&(0x7f0000000080)='$@\x00', 0x370e082a94541ad5, 0xb4, 0x0) mq_unlink(&(0x7f0000000000)='$@\x00') program crashed: general protection fault in __fput single: successfully extracted reproducer found reproducer with 2 syscalls minimizing guilty program testing program (duration=45.387528745s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mq_open detailed listing: executing program 0: mq_open(&(0x7f0000000080)='$@\x00', 0x370e082a94541ad5, 0xb4, 0x0) program did not crash testing program (duration=45.387528745s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mq_unlink detailed listing: executing program 0: mq_unlink(&(0x7f0000000000)='$@\x00') program did not crash testing program (duration=45.387528745s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mq_open-mq_unlink detailed listing: executing program 0: mq_open(0x0, 0x370e082a94541ad5, 0xb4, 0x0) mq_unlink(&(0x7f0000000000)='$@\x00') program did not crash testing program (duration=45.387528745s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mq_open-mq_unlink detailed listing: executing program 0: mq_open(&(0x7f0000000080)='$@\x00', 0x370e082a94541ad5, 0xb4, 0x0) mq_unlink(0x0) program did not crash extracting C reproducer testing compiled C program (duration=45.387528745s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mq_open-mq_unlink program crashed: general protection fault in __fput simplifying C reproducer testing compiled C program (duration=45.387528745s, {Threaded:false Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mq_open-mq_unlink program crashed: general protection fault in __fput testing compiled C program (duration=45.387528745s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:false Cgroups:false BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mq_open-mq_unlink program crashed: general protection fault in __fput testing compiled C program (duration=45.387528745s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:true Sysctl:true Swap:false UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mq_open-mq_unlink program crashed: general protection fault in __fput testing compiled C program (duration=45.387528745s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:false UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mq_open-mq_unlink program crashed: general protection fault in __fput testing compiled C program (duration=45.387528745s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:false UseTmpDir:false HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mq_open-mq_unlink program crashed: general protection fault in __fput testing compiled C program (duration=45.387528745s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:false UseTmpDir:false HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mq_open-mq_unlink program crashed: general protection fault in __fput testing compiled C program (duration=45.387528745s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:false UseTmpDir:false HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mq_open-mq_unlink program crashed: general protection fault in __fput testing program (duration=45.387528745s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:false UseTmpDir:false HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mq_open-mq_unlink detailed listing: executing program 0: mq_open(&(0x7f0000000080)='$@\x00', 0x370e082a94541ad5, 0xb4, 0x0) mq_unlink(&(0x7f0000000000)='$@\x00') program crashed: general protection fault in __fput validation run: crashed=true testing program (duration=45.387528745s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:false UseTmpDir:false HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mq_open-mq_unlink detailed listing: executing program 0: mq_open(&(0x7f0000000080)='$@\x00', 0x370e082a94541ad5, 0xb4, 0x0) mq_unlink(&(0x7f0000000000)='$@\x00') program crashed: general protection fault in __fput validation run: crashed=true testing program (duration=45.387528745s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:false UseTmpDir:false HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mq_open-mq_unlink detailed listing: executing program 0: mq_open(&(0x7f0000000080)='$@\x00', 0x370e082a94541ad5, 0xb4, 0x0) mq_unlink(&(0x7f0000000000)='$@\x00') program crashed: general protection fault in __fput validation run: crashed=true reproducing took 24m11.727104583s repro crashed as (corrupted=false): Oops: general protection fault, probably for non-canonical address 0xdffffc0000000005: 0000 [#1] SMP KASAN PTI KASAN: null-ptr-deref in range [0x0000000000000028-0x000000000000002f] CPU: 0 UID: 0 PID: 6015 Comm: syz.0.17 Not tainted syzkaller #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025 RIP: 0010:fsnotify_parent include/linux/fsnotify.h:81 [inline] RIP: 0010:fsnotify_path include/linux/fsnotify.h:113 [inline] RIP: 0010:fsnotify_file include/linux/fsnotify.h:127 [inline] RIP: 0010:fsnotify_close include/linux/fsnotify.h:457 [inline] RIP: 0010:__fput+0x1b5/0xa70 fs/file_table.c:454 Code: fc ff df 80 3c 08 00 74 08 4c 89 e7 e8 b4 0d ee ff 4d 8b 34 24 49 8d 6e 28 48 89 e8 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df <80> 3c 08 00 74 08 48 89 ef e8 8d 0d ee ff 41 bc 60 06 00 00 4c 03 RSP: 0018:ffffc900041efd30 EFLAGS: 00010206 RAX: 0000000000000005 RBX: ffff88801ea94700 RCX: dffffc0000000000 RDX: ffff88802fc50000 RSI: 0000000004000000 RDI: 0000000002000000 RBP: 0000000000000028 R08: ffffffff8fc2d477 R09: 1ffffffff1f85a8e R10: dffffc0000000000 R11: ffffffff823a4220 R12: ffff88805697fc50 R13: 0000000000000000 R14: 0000000000000000 R15: ffff8880347f5140 FS: 000055556bd3e500(0000) GS:ffff888125a03000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b30363fff CR3: 00000000719c0000 CR4: 00000000003526f0 Call Trace: task_work_run+0x1d4/0x260 kernel/task_work.c:233 resume_user_mode_work include/linux/resume_user_mode.h:50 [inline] __exit_to_user_mode_loop kernel/entry/common.c:44 [inline] exit_to_user_mode_loop+0xff/0x4f0 kernel/entry/common.c:75 __exit_to_user_mode_prepare include/linux/irq-entry-common.h:226 [inline] syscall_exit_to_user_mode_prepare include/linux/irq-entry-common.h:256 [inline] syscall_exit_to_user_mode_work include/linux/entry-common.h:159 [inline] syscall_exit_to_user_mode include/linux/entry-common.h:194 [inline] do_syscall_64+0x2e3/0xf80 arch/x86/entry/syscall_64.c:100 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fc79cd8f749 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 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 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007ffce66e90d8 EFLAGS: 00000246 ORIG_RAX: 00000000000001b4 RAX: 0000000000000000 RBX: 0000000000015381 RCX: 00007fc79cd8f749 RDX: 0000000000000000 RSI: 000000000000001e RDI: 0000000000000003 RBP: 0000000000000000 R08: 0000000000000001 R09: 00000002e66e93cf R10: 0000001b2f720000 R11: 0000000000000246 R12: 00007fc79cfe5fac R13: 00007fc79cfe5fa0 R14: ffffffffffffffff R15: 0000000000000001 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:fsnotify_parent include/linux/fsnotify.h:81 [inline] RIP: 0010:fsnotify_path include/linux/fsnotify.h:113 [inline] RIP: 0010:fsnotify_file include/linux/fsnotify.h:127 [inline] RIP: 0010:fsnotify_close include/linux/fsnotify.h:457 [inline] RIP: 0010:__fput+0x1b5/0xa70 fs/file_table.c:454 Code: fc ff df 80 3c 08 00 74 08 4c 89 e7 e8 b4 0d ee ff 4d 8b 34 24 49 8d 6e 28 48 89 e8 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df <80> 3c 08 00 74 08 48 89 ef e8 8d 0d ee ff 41 bc 60 06 00 00 4c 03 RSP: 0018:ffffc900041efd30 EFLAGS: 00010206 RAX: 0000000000000005 RBX: ffff88801ea94700 RCX: dffffc0000000000 RDX: ffff88802fc50000 RSI: 0000000004000000 RDI: 0000000002000000 RBP: 0000000000000028 R08: ffffffff8fc2d477 R09: 1ffffffff1f85a8e R10: dffffc0000000000 R11: ffffffff823a4220 R12: ffff88805697fc50 R13: 0000000000000000 R14: 0000000000000000 R15: ffff8880347f5140 FS: 000055556bd3e500(0000) GS:ffff888125a03000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b30363fff CR3: 00000000719c0000 CR4: 00000000003526f0 ---------------- Code disassembly (best guess), 2 bytes skipped: 0: df 80 3c 08 00 74 filds 0x7400083c(%rax) 6: 08 4c 89 e7 or %cl,-0x19(%rcx,%rcx,4) a: e8 b4 0d ee ff call 0xffee0dc3 f: 4d 8b 34 24 mov (%r12),%r14 13: 49 8d 6e 28 lea 0x28(%r14),%rbp 17: 48 89 e8 mov %rbp,%rax 1a: 48 c1 e8 03 shr $0x3,%rax 1e: 48 b9 00 00 00 00 00 movabs $0xdffffc0000000000,%rcx 25: fc ff df * 28: 80 3c 08 00 cmpb $0x0,(%rax,%rcx,1) <-- trapping instruction 2c: 74 08 je 0x36 2e: 48 89 ef mov %rbp,%rdi 31: e8 8d 0d ee ff call 0xffee0dc3 36: 41 bc 60 06 00 00 mov $0x660,%r12d 3c: 4c rex.WR 3d: 03 .byte 0x3 final repro crashed as (corrupted=false): Oops: general protection fault, probably for non-canonical address 0xdffffc0000000005: 0000 [#1] SMP KASAN PTI KASAN: null-ptr-deref in range [0x0000000000000028-0x000000000000002f] CPU: 0 UID: 0 PID: 6015 Comm: syz.0.17 Not tainted syzkaller #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025 RIP: 0010:fsnotify_parent include/linux/fsnotify.h:81 [inline] RIP: 0010:fsnotify_path include/linux/fsnotify.h:113 [inline] RIP: 0010:fsnotify_file include/linux/fsnotify.h:127 [inline] RIP: 0010:fsnotify_close include/linux/fsnotify.h:457 [inline] RIP: 0010:__fput+0x1b5/0xa70 fs/file_table.c:454 Code: fc ff df 80 3c 08 00 74 08 4c 89 e7 e8 b4 0d ee ff 4d 8b 34 24 49 8d 6e 28 48 89 e8 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df <80> 3c 08 00 74 08 48 89 ef e8 8d 0d ee ff 41 bc 60 06 00 00 4c 03 RSP: 0018:ffffc900041efd30 EFLAGS: 00010206 RAX: 0000000000000005 RBX: ffff88801ea94700 RCX: dffffc0000000000 RDX: ffff88802fc50000 RSI: 0000000004000000 RDI: 0000000002000000 RBP: 0000000000000028 R08: ffffffff8fc2d477 R09: 1ffffffff1f85a8e R10: dffffc0000000000 R11: ffffffff823a4220 R12: ffff88805697fc50 R13: 0000000000000000 R14: 0000000000000000 R15: ffff8880347f5140 FS: 000055556bd3e500(0000) GS:ffff888125a03000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b30363fff CR3: 00000000719c0000 CR4: 00000000003526f0 Call Trace: task_work_run+0x1d4/0x260 kernel/task_work.c:233 resume_user_mode_work include/linux/resume_user_mode.h:50 [inline] __exit_to_user_mode_loop kernel/entry/common.c:44 [inline] exit_to_user_mode_loop+0xff/0x4f0 kernel/entry/common.c:75 __exit_to_user_mode_prepare include/linux/irq-entry-common.h:226 [inline] syscall_exit_to_user_mode_prepare include/linux/irq-entry-common.h:256 [inline] syscall_exit_to_user_mode_work include/linux/entry-common.h:159 [inline] syscall_exit_to_user_mode include/linux/entry-common.h:194 [inline] do_syscall_64+0x2e3/0xf80 arch/x86/entry/syscall_64.c:100 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fc79cd8f749 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 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 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007ffce66e90d8 EFLAGS: 00000246 ORIG_RAX: 00000000000001b4 RAX: 0000000000000000 RBX: 0000000000015381 RCX: 00007fc79cd8f749 RDX: 0000000000000000 RSI: 000000000000001e RDI: 0000000000000003 RBP: 0000000000000000 R08: 0000000000000001 R09: 00000002e66e93cf R10: 0000001b2f720000 R11: 0000000000000246 R12: 00007fc79cfe5fac R13: 00007fc79cfe5fa0 R14: ffffffffffffffff R15: 0000000000000001 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:fsnotify_parent include/linux/fsnotify.h:81 [inline] RIP: 0010:fsnotify_path include/linux/fsnotify.h:113 [inline] RIP: 0010:fsnotify_file include/linux/fsnotify.h:127 [inline] RIP: 0010:fsnotify_close include/linux/fsnotify.h:457 [inline] RIP: 0010:__fput+0x1b5/0xa70 fs/file_table.c:454 Code: fc ff df 80 3c 08 00 74 08 4c 89 e7 e8 b4 0d ee ff 4d 8b 34 24 49 8d 6e 28 48 89 e8 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df <80> 3c 08 00 74 08 48 89 ef e8 8d 0d ee ff 41 bc 60 06 00 00 4c 03 RSP: 0018:ffffc900041efd30 EFLAGS: 00010206 RAX: 0000000000000005 RBX: ffff88801ea94700 RCX: dffffc0000000000 RDX: ffff88802fc50000 RSI: 0000000004000000 RDI: 0000000002000000 RBP: 0000000000000028 R08: ffffffff8fc2d477 R09: 1ffffffff1f85a8e R10: dffffc0000000000 R11: ffffffff823a4220 R12: ffff88805697fc50 R13: 0000000000000000 R14: 0000000000000000 R15: ffff8880347f5140 FS: 000055556bd3e500(0000) GS:ffff888125a03000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b30363fff CR3: 00000000719c0000 CR4: 00000000003526f0 ---------------- Code disassembly (best guess), 2 bytes skipped: 0: df 80 3c 08 00 74 filds 0x7400083c(%rax) 6: 08 4c 89 e7 or %cl,-0x19(%rcx,%rcx,4) a: e8 b4 0d ee ff call 0xffee0dc3 f: 4d 8b 34 24 mov (%r12),%r14 13: 49 8d 6e 28 lea 0x28(%r14),%rbp 17: 48 89 e8 mov %rbp,%rax 1a: 48 c1 e8 03 shr $0x3,%rax 1e: 48 b9 00 00 00 00 00 movabs $0xdffffc0000000000,%rcx 25: fc ff df * 28: 80 3c 08 00 cmpb $0x0,(%rax,%rcx,1) <-- trapping instruction 2c: 74 08 je 0x36 2e: 48 89 ef mov %rbp,%rdi 31: e8 8d 0d ee ff call 0xffee0dc3 36: 41 bc 60 06 00 00 mov $0x660,%r12d 3c: 4c rex.WR 3d: 03 .byte 0x3