BUG: stack guard page was hit at ffffc9000221fff8 (stack is ffffc90002220000..ffffc90002227fff) kernel stack overflow (double-fault): 0000 [#1] PREEMPT SMP KASAN CPU: 0 PID: 31380 Comm: syz-executor.3 Tainted: G W 5.10.102-syzkaller-00171-ge1b86e7f5cbb #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:pvclock_clocksource_read+0x0/0x640 arch/x86/kernel/pvclock.c:68 Code: 0f b6 45 d7 48 8b 75 c8 48 8b 7d c0 4c 8b 45 b8 e9 e9 fe ff ff 22 05 b7 cf 8b 05 48 83 c4 20 5b 41 5c 41 5d 41 5e 41 5f 5d c3 <55> 48 89 e5 41 57 41 56 41 55 41 54 53 48 83 ec 78 49 89 fd 49 bc RSP: 0018:ffffc90002220000 EFLAGS: 00010082 RAX: 1ffffffff0c987a0 RBX: ffffffff85d4d680 RCX: dffffc0000000000 RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff86e39000 RBP: ffffc90002220008 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 R13: ffff8881f7027280 R14: ffff888116292780 R15: dffffc0000000000 FS: 00007f4a747bb700(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffc9000221fff8 CR3: 000000014ff48000 CR4: 00000000003506b0 DR0: 0000000000000000 DR1: 000000000dc0200f DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: paravirt_sched_clock arch/x86/include/asm/paravirt.h:22 [inline] sched_clock+0x3a/0x40 arch/x86/kernel/tsc.c:252 sched_clock_cpu+0x1b/0x3c0 kernel/sched/clock.c:371 irqtime_account_irq+0x76/0x2d0 kernel/sched/cputime.c:63 account_irq_enter_time include/linux/vtime.h:109 [inline] irq_enter_rcu+0x6f/0xa0 kernel/softirq.c:374 sysvec_apic_timer_interrupt+0x19/0xe0 arch/x86/kernel/apic/apic.c:1095 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:635 RIP: 0010:is_last_frame arch/x86/kernel/unwind_frame.c:87 [inline] RIP: 0010:is_last_task_frame arch/x86/kernel/unwind_frame.c:156 [inline] RIP: 0010:unwind_next_frame+0xa0/0x740 arch/x86/kernel/unwind_frame.c:266 Code: 00 00 48 89 d8 48 c1 e8 03 80 3c 10 00 74 12 48 89 df e8 a3 e3 72 00 48 ba 00 00 00 00 00 fc ff df f6 03 03 0f 85 2e 05 00 00 <49> 8d 5f 38 48 89 d8 48 c1 e8 03 48 89 45 a8 80 3c 10 00 74 12 48 RSP: 0018:ffffc900022201c8 EFLAGS: 00000246 RAX: 1ffff92000444057 RBX: 1ffff9200044404c RCX: 0000000081add901 RDX: dffffc0000000000 RSI: ffffffff81add948 RDI: ffffc90002220260 RBP: ffffc90002220250 R08: ffffc90002220348 R09: 0000000000000020 R10: ffffc90002220350 R11: 0000000000000000 R12: 0000000000000000 R13: ffffffff815bee70 R14: ffffc900022202b8 R15: ffffc90002220260 arch_stack_walk+0x112/0x140 arch/x86/kernel/stacktrace.c:25 stack_trace_save+0x11b/0x1e0 kernel/stacktrace.c:121 kasan_save_stack mm/kasan/common.c:38 [inline] kasan_set_track mm/kasan/common.c:46 [inline] set_alloc_info mm/kasan/common.c:428 [inline] __kasan_slab_alloc+0xb2/0xe0 mm/kasan/common.c:461 kasan_slab_alloc include/linux/kasan.h:259 [inline] slab_post_alloc_hook mm/slab.h:583 [inline] slab_alloc_node mm/slub.c:2954 [inline] slab_alloc mm/slub.c:2962 [inline] kmem_cache_alloc+0x1a2/0x380 mm/slub.c:2967 kmem_cache_zalloc include/linux/slab.h:654 [inline] lsm_file_alloc security/security.c:535 [inline] security_file_alloc+0x36/0x200 security/security.c:1431 __alloc_file+0xc5/0x3b0 fs/file_table.c:106 alloc_empty_file+0xac/0x1b0 fs/file_table.c:151 dentry_open+0x4e/0x100 fs/open.c:956 file_open+0x2a3/0x650 fs/incfs/vfs.c:1427 do_dentry_open+0x7a5/0x1090 fs/open.c:819 vfs_open fs/open.c:942 [inline] dentry_open+0xb8/0x100 fs/open.c:958 file_open+0x2a3/0x650 fs/incfs/vfs.c:1427 do_dentry_open+0x7a5/0x1090 fs/open.c:819 vfs_open fs/open.c:942 [inline] dentry_open+0xb8/0x100 fs/open.c:958 file_open+0x2a3/0x650 fs/incfs/vfs.c:1427 do_dentry_open+0x7a5/0x1090 fs/open.c:819 vfs_open fs/open.c:942 [inline] dentry_open+0xb8/0x100 fs/open.c:958 file_open+0x2a3/0x650 fs/incfs/vfs.c:1427 do_dentry_open+0x7a5/0x1090 fs/open.c:819 vfs_open fs/open.c:942 [inline] dentry_open+0xb8/0x100 fs/open.c:958 file_open+0x2a3/0x650 fs/incfs/vfs.c:1427 do_dentry_open+0x7a5/0x1090 fs/open.c:819 vfs_open fs/open.c:942 [inline] dentry_open+0xb8/0x100 fs/open.c:958 file_open+0x2a3/0x650 fs/incfs/vfs.c:1427 do_dentry_open+0x7a5/0x1090 fs/open.c:819 vfs_open fs/open.c:942 [inline] dentry_open+0xb8/0x100 fs/open.c:958 file_open+0x2a3/0x650 fs/incfs/vfs.c:1427 do_dentry_open+0x7a5/0x1090 fs/open.c:819 vfs_open fs/open.c:942 [inline] dentry_open+0xb8/0x100 fs/open.c:958 file_open+0x2a3/0x650 fs/incfs/vfs.c:1427 do_dentry_open+0x7a5/0x1090 fs/open.c:819 vfs_open fs/open.c:942 [inline] dentry_open+0xb8/0x100 fs/open.c:958 file_open+0x2a3/0x650 fs/incfs/vfs.c:1427 do_dentry_open+0x7a5/0x1090 fs/open.c:819 vfs_open fs/open.c:942 [inline] dentry_open+0xb8/0x100 fs/open.c:958 file_open+0x2a3/0x650 fs/incfs/vfs.c:1427 do_dentry_open+0x7a5/0x1090 fs/open.c:819 vfs_open fs/open.c:942 [inline] dentry_open+0xb8/0x100 fs/open.c:958 file_open+0x2a3/0x650 fs/incfs/vfs.c:1427 do_dentry_open+0x7a5/0x1090 fs/open.c:819 vfs_open fs/open.c:942 [inline] dentry_open+0xb8/0x100 fs/open.c:958 file_open+0x2a3/0x650 fs/incfs/vfs.c:1427 do_dentry_open+0x7a5/0x1090 fs/open.c:819 vfs_open fs/open.c:942 [inline] dentry_open+0xb8/0x100 fs/open.c:958 file_open+0x2a3/0x650 fs/incfs/vfs.c:1427 do_dentry_open+0x7a5/0x1090 fs/open.c:819 vfs_open fs/open.c:942 [inline] dentry_open+0xb8/0x100 fs/open.c:958 file_open+0x2a3/0x650 fs/incfs/vfs.c:1427 do_dentry_open+0x7a5/0x1090 fs/open.c:819 vfs_open fs/open.c:942 [inline] dentry_open+0xb8/0x100 fs/open.c:958 file_open+0x2a3/0x650 fs/incfs/vfs.c:1427 do_dentry_open+0x7a5/0x1090 fs/open.c:819 vfs_open fs/open.c:942 [inline] dentry_open+0xb8/0x100 fs/open.c:958 file_open+0x2a3/0x650 fs/incfs/vfs.c:1427 do_dentry_open+0x7a5/0x1090 fs/open.c:819 vfs_open fs/open.c:942 [inline] dentry_open+0xb8/0x100 fs/open.c:958 file_open+0x2a3/0x650 fs/incfs/vfs.c:1427 do_dentry_open+0x7a5/0x1090 fs/open.c:819 vfs_open fs/open.c:942 [inline] dentry_open+0xb8/0x100 fs/open.c:958 file_open+0x2a3/0x650 fs/incfs/vfs.c:1427 do_dentry_open+0x7a5/0x1090 fs/open.c:819 vfs_open fs/open.c:942 [inline] dentry_open+0xb8/0x100 fs/open.c:958 file_open+0x2a3/0x650 fs/incfs/vfs.c:1427 do_dentry_open+0x7a5/0x1090 fs/open.c:819 vfs_open fs/open.c:942 [inline] dentry_open+0xb8/0x100 fs/open.c:958 file_open+0x2a3/0x650 fs/incfs/vfs.c:1427 do_dentry_open+0x7a5/0x1090 fs/open.c:819 vfs_open fs/open.c:942 [inline] dentry_open+0xb8/0x100 fs/open.c:958 file_open+0x2a3/0x650 fs/incfs/vfs.c:1427 do_dentry_open+0x7a5/0x1090 fs/open.c:819 vfs_open fs/open.c:942 [inline] dentry_open+0xb8/0x100 fs/open.c:958 file_open+0x2a3/0x650 fs/incfs/vfs.c:1427 do_dentry_open+0x7a5/0x1090 fs/open.c:819 vfs_open fs/open.c:942 [inline] dentry_open+0xb8/0x100 fs/open.c:958 file_open+0x2a3/0x650 fs/incfs/vfs.c:1427 do_dentry_open+0x7a5/0x1090 fs/open.c:819 vfs_open fs/open.c:942 [inline] dentry_open+0xb8/0x100 fs/open.c:958 file_open+0x2a3/0x650 fs/incfs/vfs.c:1427 do_dentry_open+0x7a5/0x1090 fs/open.c:819 vfs_open fs/open.c:942 [inline] dentry_open+0xb8/0x100 fs/open.c:958 file_open+0x2a3/0x650 fs/incfs/vfs.c:1427 do_dentry_open+0x7a5/0x1090 fs/open.c:819 vfs_open fs/open.c:942 [inline] dentry_open+0xb8/0x100 fs/open.c:958 file_open+0x2a3/0x650 fs/incfs/vfs.c:1427 do_dentry_open+0x7a5/0x1090 fs/open.c:819 vfs_open fs/open.c:942 [inline] dentry_open+0xb8/0x100 fs/open.c:958 file_open+0x2a3/0x650 fs/incfs/vfs.c:1427 do_dentry_open+0x7a5/0x1090 fs/open.c:819 vfs_open fs/open.c:942 [inline] dentry_open+0xb8/0x100 fs/open.c:958 file_open+0x2a3/0x650 fs/incfs/vfs.c:1427 do_dentry_open+0x7a5/0x1090 fs/open.c:819 vfs_open fs/open.c:942 [inline] dentry_open+0xb8/0x100 fs/open.c:958 file_open+0x2a3/0x650 fs/incfs/vfs.c:1427 do_dentry_open+0x7a5/0x1090 fs/open.c:819 vfs_open fs/open.c:942 [inline] dentry_open+0xb8/0x100 fs/open.c:958 file_open+0x2a3/0x650 fs/incfs/vfs.c:1427 do_dentry_open+0x7a5/0x1090 fs/open.c:819 vfs_open fs/open.c:942 [inline] dentry_open+0xb8/0x100 fs/open.c:958 file_open+0x2a3/0x650 fs/incfs/vfs.c:1427 do_dentry_open+0x7a5/0x1090 fs/open.c:819 vfs_open fs/open.c:942 [inline] dentry_open+0xb8/0x100 fs/open.c:958 file_open+0x2a3/0x650 fs/incfs/vfs.c:1427 do_dentry_open+0x7a5/0x1090 fs/open.c:819 vfs_open fs/open.c:942 [inline] dentry_open+0xb8/0x100 fs/open.c:958 file_open+0x2a3/0x650 fs/incfs/vfs.c:1427 do_dentry_open+0x7a5/0x1090 fs/open.c:819 vfs_open fs/open.c:942 [inline] dentry_open+0xb8/0x100 fs/open.c:958 file_open+0x2a3/0x650 fs/incfs/vfs.c:1427 do_dentry_open+0x7a5/0x1090 fs/open.c:819 vfs_open fs/open.c:942 [inline] dentry_open+0xb8/0x100 fs/open.c:958 file_open+0x2a3/0x650 fs/incfs/vfs.c:1427 do_dentry_open+0x7a5/0x1090 fs/open.c:819 vfs_open fs/open.c:942 [inline] dentry_open+0xb8/0x100 fs/open.c:958 file_open+0x2a3/0x650 fs/incfs/vfs.c:1427 do_dentry_open+0x7a5/0x1090 fs/open.c:819 vfs_open fs/open.c:942 [inline] dentry_open+0xb8/0x100 fs/open.c:958 file_open+0x2a3/0x650 fs/incfs/vfs.c:1427 do_dentry_open+0x7a5/0x1090 fs/open.c:819 vfs_open fs/open.c:942 [inline] dentry_open+0xb8/0x100 fs/open.c:958 file_open+0x2a3/0x650 fs/incfs/vfs.c:1427 do_dentry_open+0x7a5/0x1090 fs/open.c:819 vfs_open fs/open.c:942 [inline] dentry_open+0xb8/0x100 fs/open.c:958 file_open+0x2a3/0x650 fs/incfs/vfs.c:1427 do_dentry_open+0x7a5/0x1090 fs/open.c:819 vfs_open fs/open.c:942 [inline] dentry_open+0xb8/0x100 fs/open.c:958 file_open+0x2a3/0x650 fs/incfs/vfs.c:1427 do_dentry_open+0x7a5/0x1090 fs/open.c:819 vfs_open fs/open.c:942 [inline] dentry_open+0xb8/0x100 fs/open.c:958 file_open+0x2a3/0x650 fs/incfs/vfs.c:1427 do_dentry_open+0x7a5/0x1090 fs/open.c:819 vfs_open fs/open.c:942 [inline] dentry_open+0xb8/0x100 fs/open.c:958 file_open+0x2a3/0x650 fs/incfs/vfs.c:1427 do_dentry_open+0x7a5/0x1090 fs/open.c:819 vfs_open fs/open.c:942 [inline] dentry_open+0xb8/0x100 fs/open.c:958 file_open+0x2a3/0x650 fs/incfs/vfs.c:1427 do_dentry_open+0x7a5/0x1090 fs/open.c:819 vfs_open fs/open.c:942 [inline] dentry_open+0xb8/0x100 fs/open.c:958 file_open+0x2a3/0x650 fs/incfs/vfs.c:1427 do_dentry_open+0x7a5/0x1090 fs/open.c:819 vfs_open fs/open.c:942 [inline] dentry_open+0xb8/0x100 fs/open.c:958 file_open+0x2a3/0x650 fs/incfs/vfs.c:1427 do_dentry_open+0x7a5/0x1090 fs/open.c:819 vfs_open fs/open.c:942 [inline] dentry_open+0xb8/0x100 fs/open.c:958 file_open+0x2a3/0x650 fs/incfs/vfs.c:1427 do_dentry_open+0x7a5/0x1090 fs/open.c:819 vfs_open fs/open.c:942 [inline] dentry_open+0xb8/0x100 fs/open.c:958 file_open+0x2a3/0x650 fs/incfs/vfs.c:1427 do_dentry_open+0x7a5/0x1090 fs/open.c:819 vfs_open fs/open.c:942 [inline] dentry_open+0xb8/0x100 fs/open.c:958 file_open+0x2a3/0x650 fs/incfs/vfs.c:1427 do_dentry_open+0x7a5/0x1090 fs/open.c:819 vfs_open fs/open.c:942 [inline] dentry_open+0xb8/0x100 fs/open.c:958 file_open+0x2a3/0x650 fs/incfs/vfs.c:1427 do_dentry_open+0x7a5/0x1090 fs/open.c:819 vfs_open fs/open.c:942 [inline] dentry_open+0xb8/0x100 fs/open.c:958 file_open+0x2a3/0x650 fs/incfs/vfs.c:1427 do_dentry_open+0x7a5/0x1090 fs/open.c:819 vfs_open fs/open.c:942 [inline] dentry_open+0xb8/0x100 fs/open.c:958 file_open+0x2a3/0x650 fs/incfs/vfs.c:1427 do_dentry_open+0x7a5/0x1090 fs/open.c:819 vfs_open fs/open.c:942 [inline] dentry_open+0xb8/0x100 fs/open.c:958 file_open+0x2a3/0x650 fs/incfs/vfs.c:1427 do_dentry_open+0x7a5/0x1090 fs/open.c:819 vfs_open fs/open.c:942 [inline] dentry_open+0xb8/0x100 fs/open.c:958 file_open+0x2a3/0x650 fs/incfs/vfs.c:1427 do_dentry_open+0x7a5/0x1090 fs/open.c:819 vfs_open fs/open.c:942 [inline] dentry_open+0xb8/0x100 fs/open.c:958 file_open+0x2a3/0x650 fs/incfs/vfs.c:1427 do_dentry_open+0x7a5/0x1090 fs/open.c:819 vfs_open fs/open.c:942 [inline] dentry_open+0xb8/0x100 fs/open.c:958 file_open+0x2a3/0x650 fs/incfs/vfs.c:1427 do_dentry_open+0x7a5/0x1090 fs/open.c:819 vfs_open fs/open.c:942 [inline] dentry_open+0xb8/0x100 fs/open.c:958 file_open+0x2a3/0x650 fs/incfs/vfs.c:1427 do_dentry_open+0x7a5/0x1090 fs/open.c:819 vfs_open fs/open.c:942 [inline] dentry_open+0xb8/0x100 fs/open.c:958 file_open+0x2a3/0x650 fs/incfs/vfs.c:1427 do_dentry_open+0x7a5/0x1090 fs/open.c:819 vfs_open fs/open.c:942 [inline] dentry_open+0xb8/0x100 fs/open.c:958 file_open+0x2a3/0x650 fs/incfs/vfs.c:1427 do_dentry_open+0x7a5/0x1090 fs/open.c:819 vfs_open fs/open.c:942 [inline] dentry_open+0xb8/0x100 fs/open.c:958 file_open+0x2a3/0x650 fs/incfs/vfs.c:1427 do_dentry_open+0x7a5/0x1090 fs/open.c:819 vfs_open fs/open.c:942 [inline] dentry_open+0xb8/0x100 fs/open.c:958 file_open+0x2a3/0x650 fs/incfs/vfs.c:1427 do_dentry_open+0x7a5/0x1090 fs/open.c:819 vfs_open fs/open.c:942 [inline] dentry_open+0xb8/0x100 fs/open.c:958 file_open+0x2a3/0x650 fs/incfs/vfs.c:1427 do_dentry_open+0x7a5/0x1090 fs/open.c:819 vfs_open fs/open.c:942 [inline] dentry_open+0xb8/0x100 fs/open.c:958 file_open+0x2a3/0x650 fs/incfs/vfs.c:1427 do_dentry_open+0x7a5/0x1090 fs/open.c:819 vfs_open fs/open.c:942 [inline] dentry_open+0xb8/0x100 fs/open.c:958 file_open+0x2a3/0x650 fs/incfs/vfs.c:1427 do_dentry_open+0x7a5/0x1090 fs/open.c:819 vfs_open fs/open.c:942 [inline] dentry_open+0xb8/0x100 fs/open.c:958 file_open+0x2a3/0x650 fs/incfs/vfs.c:1427 do_dentry_open+0x7a5/0x1090 fs/open.c:819 vfs_open fs/open.c:942 [inline] dentry_open+0xb8/0x100 fs/open.c:958 file_open+0x2a3/0x650 fs/incfs/vfs.c:1427 do_dentry_open+0x7a5/0x1090 fs/open.c:819 vfs_open+0x73/0x80 fs/open.c:942 do_open fs/namei.c:3327 [inline] path_openat+0x264d/0x3500 fs/namei.c:3444 do_filp_open+0x200/0x440 fs/namei.c:3471 do_sys_openat2+0x13b/0x470 fs/open.c:1211 do_sys_open fs/open.c:1227 [inline] __do_sys_openat fs/open.c:1243 [inline] __se_sys_openat fs/open.c:1238 [inline] __x64_sys_openat+0x243/0x290 fs/open.c:1238 do_syscall_64+0x31/0x70 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x7f4a756a8049 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 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f4a747bb168 EFLAGS: 00000246 ORIG_RAX: 0000000000000101 RAX: ffffffffffffffda RBX: 00007f4a757bb1d0 RCX: 00007f4a756a8049 RDX: 0000000000000000 RSI: 0000000020000000 RDI: ffffffffffffff9c RBP: 00007f4a7570208d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffdd41f4def R14: 00007f4a747bb300 R15: 0000000000022000 Modules linked in: ---[ end trace a3fd0c48e4cd04a0 ]--- RIP: 0010:pvclock_clocksource_read+0x0/0x640 arch/x86/kernel/pvclock.c:68 Code: 0f b6 45 d7 48 8b 75 c8 48 8b 7d c0 4c 8b 45 b8 e9 e9 fe ff ff 22 05 b7 cf 8b 05 48 83 c4 20 5b 41 5c 41 5d 41 5e 41 5f 5d c3 <55> 48 89 e5 41 57 41 56 41 55 41 54 53 48 83 ec 78 49 89 fd 49 bc RSP: 0018:ffffc90002220000 EFLAGS: 00010082 RAX: 1ffffffff0c987a0 RBX: ffffffff85d4d680 RCX: dffffc0000000000 RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff86e39000 RBP: ffffc90002220008 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 R13: ffff8881f7027280 R14: ffff888116292780 R15: dffffc0000000000 FS: 00007f4a747bb700(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffc9000221fff8 CR3: 000000014ff48000 CR4: 00000000003506b0 DR0: 0000000000000000 DR1: 000000000dc0200f DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess): 0: 0f b6 45 d7 movzbl -0x29(%rbp),%eax 4: 48 8b 75 c8 mov -0x38(%rbp),%rsi 8: 48 8b 7d c0 mov -0x40(%rbp),%rdi c: 4c 8b 45 b8 mov -0x48(%rbp),%r8 10: e9 e9 fe ff ff jmpq 0xfffffefe 15: 22 05 b7 cf 8b 05 and 0x58bcfb7(%rip),%al # 0x58bcfd2 1b: 48 83 c4 20 add $0x20,%rsp 1f: 5b pop %rbx 20: 41 5c pop %r12 22: 41 5d pop %r13 24: 41 5e pop %r14 26: 41 5f pop %r15 28: 5d pop %rbp 29: c3 retq * 2a: 55 push %rbp <-- trapping instruction 2b: 48 89 e5 mov %rsp,%rbp 2e: 41 57 push %r15 30: 41 56 push %r14 32: 41 55 push %r13 34: 41 54 push %r12 36: 53 push %rbx 37: 48 83 ec 78 sub $0x78,%rsp 3b: 49 89 fd mov %rdi,%r13 3e: 49 rex.WB 3f: bc .byte 0xbc