SELinux: security_context_str_to_sid (root) failed with errno=-22
------------[ cut here ]------------
WARNING: fs/namespace.c:1434 at mntput_no_expire+0x78e/0xbe0, CPU#0: syz-executor.6/298
Modules linked in:
CPU: 0 UID: 0 PID: 298 Comm: syz-executor.6 Tainted: G W 6.17.0-rc4-next-20250901 #1 PREEMPT(voluntary)
Tainted: [W]=WARN
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014
RIP: 0010:mntput_no_expire+0x78e/0xbe0
Code: 05 d6 30 81 04 01 e8 71 df 91 ff e9 41 fc ff ff e8 27 47 b4 ff 31 ff 44 89 ee e8 4d 42 b4 ff 45 85 ed 79 09 e8 13 47 b4 ff 90 <0f> 0b 90 e8 0a 47 b4 ff e8 b5 2d fc 02 31 ff 89 c5 89 c6 e8 2a 42
RSP: 0018:ffff8880168e7ce0 EFLAGS: 00010293
RAX: 0000000000000000 RBX: 1ffff11002d1cfa1 RCX: ffffffff81bfaf93
RDX: ffff88801b489b80 RSI: ffffffff81bfaf9d RDI: 0000000000000005
RBP: ffff888015966a80 R08: 0000000000000001 R09: 0000000000000000
R10: 00000000ffffffff R11: 0000000000000001 R12: ffff8880168e7d48
R13: 00000000ffffffff R14: ffff888015966a80 R15: ffff888015966b68
FS: 000055557aa72400(0000) GS:ffff8880e55d8000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055557aa7bc58 CR3: 0000000045390000 CR4: 0000000000350ef0
Call Trace:
path_umount+0x6e0/0x1100
__x64_sys_umount+0x15c/0x190
do_syscall_64+0xbf/0x360
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f0c63bbaf87
Code: ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 66 0f 1f 44 00 00 31 f6 e9 09 00 00 00 66 0f 1f 84 00 00 00 00 00 b8 a6 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffd5f5fea98 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
RAX: ffffffffffffffda RBX: 0000000000000016 RCX: 00007f0c63bbaf87
RDX: 00007ffd5f5feb69 RSI: 000000000000000a RDI: 00007ffd5f5feb60
RBP: 00007ffd5f5feb60 R08: 00000000ffffffff R09: 00007ffd5f5fe930
R10: 000055557aa73c7b R11: 0000000000000246 R12: 00007f0c63c13105
R13: 00007ffd5f5ffc20 R14: 000055557aa73c20 R15: 00007ffd5f5ffc60
irq event stamp: 182007
hardirqs last enabled at (182017): [] __up_console_sem+0x78/0x80
hardirqs last disabled at (182026): [] __up_console_sem+0x5d/0x80
softirqs last enabled at (181966): [] handle_softirqs+0x50c/0x770
softirqs last disabled at (181961): [] __irq_exit_rcu+0xc4/0x100
---[ end trace 0000000000000000 ]---
------------[ cut here ]------------
WARNING: fs/namespace.c:1434 at mntput_no_expire+0x78e/0xbe0, CPU#0: syz-executor.6/298
Modules linked in:
CPU: 0 UID: 0 PID: 298 Comm: syz-executor.6 Tainted: G W 6.17.0-rc4-next-20250901 #1 PREEMPT(voluntary)
Tainted: [W]=WARN
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014
RIP: 0010:mntput_no_expire+0x78e/0xbe0
Code: 05 d6 30 81 04 01 e8 71 df 91 ff e9 41 fc ff ff e8 27 47 b4 ff 31 ff 44 89 ee e8 4d 42 b4 ff 45 85 ed 79 09 e8 13 47 b4 ff 90 <0f> 0b 90 e8 0a 47 b4 ff e8 b5 2d fc 02 31 ff 89 c5 89 c6 e8 2a 42
RSP: 0018:ffff8880168e7c00 EFLAGS: 00010293
RAX: 0000000000000000 RBX: 1ffff11002d1cf85 RCX: ffffffff81bfaf93
RDX: ffff88801b489b80 RSI: ffffffff81bfaf9d RDI: 0000000000000005
RBP: ffff8880159668c0 R08: 0000000000000001 R09: 0000000000000000
R10: 00000000ffffffff R11: 0000000000000001 R12: ffff8880168e7c68
R13: 00000000ffffffff R14: dead000000000100 R15: ffff8880159668c0
FS: 000055557aa72400(0000) GS:ffff8880e55d8000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b2da23000 CR3: 0000000045390000 CR4: 0000000000350ef0
Call Trace:
namespace_unlock+0x7f1/0x810
path_umount+0x6a4/0x1100
__x64_sys_umount+0x15c/0x190
do_syscall_64+0xbf/0x360
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f0c63bbaf87
Code: ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 66 0f 1f 44 00 00 31 f6 e9 09 00 00 00 66 0f 1f 84 00 00 00 00 00 b8 a6 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffd5f5fea98 EFLAGS: 00000202 ORIG_RAX: 00000000000000a6
RAX: ffffffffffffffda RBX: 0000000000000016 RCX: 00007f0c63bbaf87
RDX: 00007ffd5f5feb69 RSI: 000000000000000a RDI: 00007ffd5f5feb60
RBP: 00007ffd5f5feb60 R08: 00000000ffffffff R09: 00007ffd5f5fe930
R10: 000055557aa73c7b R11: 0000000000000202 R12: 00007f0c63c13105
R13: 00007ffd5f5ffc20 R14: 000055557aa73c20 R15: 00007ffd5f5ffc60
irq event stamp: 182665
hardirqs last enabled at (182673): [] __up_console_sem+0x78/0x80
hardirqs last disabled at (182682): [] __up_console_sem+0x5d/0x80
softirqs last enabled at (182426): [] handle_softirqs+0x50c/0x770
softirqs last disabled at (182421): [] __irq_exit_rcu+0xc4/0x100
---[ end trace 0000000000000000 ]---
------------[ cut here ]------------
WARNING: fs/namespace.c:1434 at mntput_no_expire+0x78e/0xbe0, CPU#0: syz-executor.6/298
Modules linked in:
CPU: 0 UID: 0 PID: 298 Comm: syz-executor.6 Tainted: G W 6.17.0-rc4-next-20250901 #1 PREEMPT(voluntary)
Tainted: [W]=WARN
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014
RIP: 0010:mntput_no_expire+0x78e/0xbe0
Code: 05 d6 30 81 04 01 e8 71 df 91 ff e9 41 fc ff ff e8 27 47 b4 ff 31 ff 44 89 ee e8 4d 42 b4 ff 45 85 ed 79 09 e8 13 47 b4 ff 90 <0f> 0b 90 e8 0a 47 b4 ff e8 b5 2d fc 02 31 ff 89 c5 89 c6 e8 2a 42
RSP: 0018:ffff8880168e7ce0 EFLAGS: 00010293
RAX: 0000000000000000 RBX: 1ffff11002d1cfa1 RCX: ffffffff81bfaf93
RDX: ffff88801b489b80 RSI: ffffffff81bfaf9d RDI: 0000000000000005
RBP: ffff8880159668c0 R08: 0000000000000001 R09: 0000000000000000
R10: 00000000ffffffff R11: 0000000000000001 R12: ffff8880168e7d48
R13: 00000000ffffffff R14: ffff8880159668c0 R15: ffff8880159669a8
FS: 000055557aa72400(0000) GS:ffff8880e55d8000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055c0331223f8 CR3: 0000000045390000 CR4: 0000000000350ef0
Call Trace:
path_umount+0x6e0/0x1100
__x64_sys_umount+0x15c/0x190
do_syscall_64+0xbf/0x360
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f0c63bbaf87
Code: ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 66 0f 1f 44 00 00 31 f6 e9 09 00 00 00 66 0f 1f 84 00 00 00 00 00 b8 a6 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffd5f5fea98 EFLAGS: 00000202 ORIG_RAX: 00000000000000a6
RAX: ffffffffffffffda RBX: 0000000000000016 RCX: 00007f0c63bbaf87
RDX: 00007ffd5f5feb69 RSI: 000000000000000a RDI: 00007ffd5f5feb60
RBP: 00007ffd5f5feb60 R08: 00000000ffffffff R09: 00007ffd5f5fe930
R10: 000055557aa73c7b R11: 0000000000000202 R12: 00007f0c63c13105
R13: 00007ffd5f5ffc20 R14: 000055557aa73c20 R15: 00007ffd5f5ffc60
irq event stamp: 183139
hardirqs last enabled at (183147): [] __up_console_sem+0x78/0x80
hardirqs last disabled at (183156): [] __up_console_sem+0x5d/0x80
softirqs last enabled at (182900): [] handle_softirqs+0x50c/0x770
softirqs last disabled at (183175): [] __irq_exit_rcu+0xc4/0x100
---[ end trace 0000000000000000 ]---
SELinux: security_context_str_to_sid (root) failed with errno=-22
kmemleak: Found object by alias at 0x607f1a63e364
CPU: 1 UID: 0 PID: 4071 Comm: syz-executor.4 Tainted: G W 6.17.0-rc4-next-20250901 #1 PREEMPT(voluntary)
Tainted: [W]=WARN
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014
Call Trace:
dump_stack_lvl+0xca/0x120
__lookup_object+0x94/0xb0
delete_object_full+0x27/0x70
free_percpu+0x30/0x1160
futex_hash_free+0x38/0xc0
mmput+0x2d3/0x390
do_exit+0x79d/0x2970
do_group_exit+0xd3/0x2a0
get_signal+0x2315/0x2340
arch_do_signal_or_restart+0x80/0x790
exit_to_user_mode_loop+0x8b/0x110
do_syscall_64+0x2f7/0x360
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fb90527bb19
Code: Unable to access opcode bytes at 0x7fb90527baef.
RSP: 002b:00007fb9027f1188 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffe7 RBX: 00007fb90538ef60 RCX: 00007fb90527bb19
RDX: 0000000020000040 RSI: 0000000040086602 RDI: 0000000000000004
RBP: 00007fb9052d5f6d R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffe4693355f R14: 00007fb9027f1300 R15: 0000000000022000
kmemleak: Object (percpu) 0x607f1a63e360 (size 8):
kmemleak: comm "syz-executor.4", pid 4071, jiffies 4294832812
kmemleak: min_count = 1
kmemleak: count = 0
kmemleak: flags = 0x21
kmemleak: checksum = 0
kmemleak: backtrace:
pcpu_alloc_noprof+0x87a/0x1170
percpu_ref_init+0x37/0x400
blkg_alloc+0xe9/0x7d0
blkg_create+0xe08/0x1420
bio_associate_blkg_from_css+0xe06/0x1380
bio_associate_blkg+0x10e/0x2a0
bio_init+0x2dd/0x570
bio_alloc_bioset+0x4c5/0x8c0
ext4_bio_write_folio+0x8d6/0x13c0
mpage_map_and_submit_buffers+0x545/0x9d0
ext4_do_writepages+0x2125/0x38b0
ext4_writepages+0x369/0x7a0
do_writepages+0x244/0x5c0
filemap_fdatawrite_wbc+0x10b/0x150
__filemap_fdatawrite_range+0xb9/0x100
filemap_write_and_wait_range.part.0+0x89/0x110
SELinux: security_context_str_to_sid (root) failed with errno=-22
Oops: general protection fault, probably for non-canonical address 0xdffffc0020000032: 0000 [#1] SMP KASAN NOPTI
KASAN: probably user-memory-access in range [0x0000000100000190-0x0000000100000197]
CPU: 1 UID: 0 PID: 4116 Comm: syz-executor.4 Tainted: G W 6.17.0-rc4-next-20250901 #1 PREEMPT(voluntary)
Tainted: [W]=WARN
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014
RIP: 0010:perf_tp_event+0x175/0xe70
Code: ff df 48 89 85 a8 fd ff ff 48 c1 e8 03 4c 01 e0 48 89 85 c8 fd ff ff e8 c9 51 ea ff 48 8d bb f0 01 00 00 48 89 f8 48 c1 e8 03 <42> 0f b6 04 20 84 c0 74 08 3c 03 0f 8e c5 0b 00 00 44 8b ab f0 01
RSP: 0018:ffff88800f2df600 EFLAGS: 00010212
RAX: 0000000020000032 RBX: 00000000ffffffa0 RCX: 0000000000000002
RDX: ffff888018c19b80 RSI: ffffffff8189a4e7 RDI: 0000000100000190
RBP: ffff88800f2df870 R08: ffff88806cf31340 R09: ffffe8ffffd16360
R10: 0000000000000000 R11: 0000000000000001 R12: dffffc0000000000
R13: 000000000000002c R14: ffff88806cf31340 R15: dffffc0000000000
FS: 0000555579821400(0000) GS:ffff8880e56d8000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b2da21000 CR3: 0000000047585000 CR4: 0000000000350ef0
Call Trace:
perf_trace_run_bpf_submit+0xef/0x180
perf_trace_lock+0x337/0x5d0
lock_release+0x1ab/0x290
futex_ref_get+0x119/0x300
futex_hash+0x70/0x390
futex_wait_setup+0xae/0x550
__futex_wait+0x151/0x300
futex_wait+0xde/0x380
do_futex+0x2ee/0x370
__x64_sys_futex+0x1c9/0x4d0
do_syscall_64+0xbf/0x360
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fb90527bb19
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 bc ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffe469335d8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: ffffffffffffffda RBX: 0000000000000032 RCX: 00007fb90527bb19
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007fb90538ef6c
RBP: 00007fb90538ef6c R08: 00007fb90536b000 R09: 0000000000000000
R10: 00007ffe469336b0 R11: 0000000000000246 R12: 000000000002ad61
R13: 00000000000003e8 R14: 00007fb90538ef60 R15: 000000000002ad53
Modules linked in:
Oops: general protection fault, probably for non-canonical address 0xdffffc0020000032: 0000 [#2] SMP KASAN NOPTI
tmpfs: Bad value for 'mpol'
KASAN: probably user-memory-access in range [0x0000000100000190-0x0000000100000197]
CPU: 1 UID: 0 PID: 4116 Comm: syz-executor.4 Tainted: G D W 6.17.0-rc4-next-20250901 #1 PREEMPT(voluntary)
Tainted: [D]=DIE, [W]=WARN
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014
RIP: 0010:perf_tp_event+0x175/0xe70
Code: ff df 48 89 85 a8 fd ff ff 48 c1 e8 03 4c 01 e0 48 89 85 c8 fd ff ff e8 c9 51 ea ff 48 8d bb f0 01 00 00 48 89 f8 48 c1 e8 03 <42> 0f b6 04 20 84 c0 74 08 3c 03 0f 8e c5 0b 00 00 44 8b ab f0 01
RSP: 0018:ffff88806cf08a80 EFLAGS: 00010012
RAX: 0000000020000032 RBX: 00000000ffffffa0 RCX: 0000000000000002
RDX: ffff888018c19b80 RSI: ffffffff8189a4e7 RDI: 0000000100000190
RBP: ffff88806cf08cf0 R08: ffff88806cf31490 R09: ffffe8ffffd16360
R10: 0000000000000000 R11: 746e756f63716573 R12: dffffc0000000000
R13: 000000000000002c R14: ffff88806cf31490 R15: dffffc0000000000
FS: 0000555579821400(0000) GS:ffff8880e56d8000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b2da21000 CR3: 0000000047585000 CR4: 0000000000350ef0
loop6: detected capacity change from 0 to 127
Call Trace:
nfs4: Unknown parameter 'default'
perf_trace_run_bpf_submit+0xef/0x180
perf_trace_lock+0x337/0x5d0
lock_release+0x1ab/0x290
ktime_get_update_offsets_now+0xab/0x3c0
tmpfs: Bad value for 'mpol'
hrtimer_interrupt+0x114/0x830
__sysvec_apic_timer_interrupt+0xbb/0x330
sysvec_apic_timer_interrupt+0x6b/0x80
asm_sysvec_apic_timer_interrupt+0x1a/0x20
loop6: detected capacity change from 0 to 127
RIP: 0010:oops_exit+0x0/0x50
Code: 00 3a 00 be ff ff ff ff 48 c7 c7 50 b4 43 86 e8 c6 0f f9 ff 5b e9 50 00 3a 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 <66> 0f 1f 00 53 e8 36 00 3a 00 8b 1d c0 3d 4f 06 31 ff 89 de e8 57
RSP: 0018:ffff88800f2df490 EFLAGS: 00000202
RAX: 0000000000000000 RBX: 0000000000000293 RCX: ffffffff8139f06f
RDX: ffff888018c19b80 RSI: ffffffff812a3dca RDI: 0000000000000007
RBP: 000000000000000b R08: 0000000000000001 R09: fffffbfff0f12690
R10: 0000000000000000 R11: 0000000000000001 R12: ffff88800f2df558
nfs4: Unknown parameter 'default'
R13: 0000000000000000 R14: dffffc0020000032 R15: 0000000000000000
oops_end+0x65/0xe0
exc_general_protection+0x1a2/0x330
asm_exc_general_protection+0x26/0x30
RIP: 0010:perf_tp_event+0x175/0xe70
Code: ff df 48 89 85 a8 fd ff ff 48 c1 e8 03 4c 01 e0 48 89 85 c8 fd ff ff e8 c9 51 ea ff 48 8d bb f0 01 00 00 48 89 f8 48 c1 e8 03 <42> 0f b6 04 20 84 c0 74 08 3c 03 0f 8e c5 0b 00 00 44 8b ab f0 01
RSP: 0018:ffff88800f2df600 EFLAGS: 00010212
RAX: 0000000020000032 RBX: 00000000ffffffa0 RCX: 0000000000000002
RDX: ffff888018c19b80 RSI: ffffffff8189a4e7 RDI: 0000000100000190
RBP: ffff88800f2df870 R08: ffff88806cf31340 R09: ffffe8ffffd16360
R10: 0000000000000000 R11: 0000000000000001 R12: dffffc0000000000
R13: 000000000000002c R14: ffff88806cf31340 R15: dffffc0000000000
perf_trace_run_bpf_submit+0xef/0x180
perf_trace_lock+0x337/0x5d0
lock_release+0x1ab/0x290
futex_ref_get+0x119/0x300
futex_hash+0x70/0x390
futex_wait_setup+0xae/0x550
__futex_wait+0x151/0x300
futex_wait+0xde/0x380
do_futex+0x2ee/0x370
__x64_sys_futex+0x1c9/0x4d0
do_syscall_64+0xbf/0x360
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fb90527bb19
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 bc ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffe469335d8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: ffffffffffffffda RBX: 0000000000000032 RCX: 00007fb90527bb19
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007fb90538ef6c
RBP: 00007fb90538ef6c R08: 00007fb90536b000 R09: 0000000000000000
R10: 00007ffe469336b0 R11: 0000000000000246 R12: 000000000002ad61
R13: 00000000000003e8 R14: 00007fb90538ef60 R15: 000000000002ad53
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:perf_tp_event+0x175/0xe70
Code: ff df 48 89 85 a8 fd ff ff 48 c1 e8 03 4c 01 e0 48 89 85 c8 fd ff ff e8 c9 51 ea ff 48 8d bb f0 01 00 00 48 89 f8 48 c1 e8 03 <42> 0f b6 04 20 84 c0 74 08 3c 03 0f 8e c5 0b 00 00 44 8b ab f0 01
RSP: 0018:ffff88800f2df600 EFLAGS: 00010212
RAX: 0000000020000032 RBX: 00000000ffffffa0 RCX: 0000000000000002
RDX: ffff888018c19b80 RSI: ffffffff8189a4e7 RDI: 0000000100000190
RBP: ffff88800f2df870 R08: ffff88806cf31340 R09: ffffe8ffffd16360
R10: 0000000000000000 R11: 0000000000000001 R12: dffffc0000000000
R13: 000000000000002c R14: ffff88806cf31340 R15: dffffc0000000000
FS: 0000555579821400(0000) GS:ffff8880e56d8000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b2da21000 CR3: 0000000047585000 CR4: 0000000000350ef0
----------------
Code disassembly (best guess), 1 bytes skipped:
0: df 48 89 fisttps -0x77(%rax)
3: 85 a8 fd ff ff 48 test %ebp,0x48fffffd(%rax)
9: c1 e8 03 shr $0x3,%eax
c: 4c 01 e0 add %r12,%rax
f: 48 89 85 c8 fd ff ff mov %rax,-0x238(%rbp)
16: e8 c9 51 ea ff callq 0xffea51e4
1b: 48 8d bb f0 01 00 00 lea 0x1f0(%rbx),%rdi
22: 48 89 f8 mov %rdi,%rax
25: 48 c1 e8 03 shr $0x3,%rax
* 29: 42 0f b6 04 20 movzbl (%rax,%r12,1),%eax <-- trapping instruction
2e: 84 c0 test %al,%al
30: 74 08 je 0x3a
32: 3c 03 cmp $0x3,%al
34: 0f 8e c5 0b 00 00 jle 0xbff
3a: 44 rex.R
3b: 8b .byte 0x8b
3c: ab stos %eax,%es:(%rdi)
3d: f0 lock
3e: 01 .byte 0x1