BUG: unable to handle page fault for address: ffffed100fffc000 #PF: supervisor write access in kernel mode #PF: error_code(0x0002) - not-present page PGD 7ffd3067 P4D 7ffd3067 PUD 7ffd2067 PMD 7ffd1067 PTE 0 Oops: 0002 [#1] PREEMPT SMP KASAN NOPTI CPU: 1 PID: 8729 Comm: syz-executor.7 Not tainted 6.1.0-rc3-next-20221101 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:__memset+0x24/0x50 Code: 90 90 90 90 90 90 0f 1f 44 00 00 49 89 f9 48 89 d1 83 e2 07 48 c1 e9 03 40 0f b6 f6 48 b8 01 01 01 01 01 01 01 01 48 0f af c6 48 ab 89 d1 f3 aa 4c 89 c8 e9 0d d4 12 00 66 66 2e 0f 1f 84 00 RSP: 0018:ffff888013eb7cc0 EFLAGS: 00010216 RAX: 0000000000000000 RBX: ffff88800c0860c0 RCX: 1ffffe21fe605148 RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffed100fffc000 RBP: ffff88800c09f140 R08: 0000000000000005 R09: ffffed1001810c18 R10: 0000000000000001 R11: 0000000000000001 R12: ffff88800c09f140 R13: ffff88800c0860c0 R14: ffffffff815f2620 R15: 1ffff1100112221f FS: 00007f08fb8fd700(0000) GS:ffff88806d100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffed100fffc000 CR3: 000000004554e000 CR4: 0000000000350ee0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff4ff0 DR7: 0000000000000400 Call Trace: kasan_unpoison+0x23/0x60 mempool_exit+0x1c2/0x330 bioset_exit+0x2c9/0x630 disk_release+0x143/0x490 device_release+0xa2/0x250 kobject_put+0x173/0x280 put_device+0x1b/0x40 put_disk+0x41/0x60 loop_control_ioctl+0x4d1/0x630 __x64_sys_ioctl+0x19a/0x220 do_syscall_64+0x3b/0xa0 entry_SYSCALL_64_after_hwframe+0x72/0xdc RIP: 0033:0x7f08fe387b19 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:00007f08fb8fd188 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007f08fe49af60 RCX: 00007f08fe387b19 RDX: 0000000000000000 RSI: 0000000000004c81 RDI: 0000000000000004 RBP: 00007f08fe3e1f6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fffae1687ff R14: 00007f08fb8fd300 R15: 0000000000022000 Modules linked in: CR2: ffffed100fffc000 ---[ end trace 0000000000000000 ]--- RIP: 0010:__memset+0x24/0x50 Code: 90 90 90 90 90 90 0f 1f 44 00 00 49 89 f9 48 89 d1 83 e2 07 48 c1 e9 03 40 0f b6 f6 48 b8 01 01 01 01 01 01 01 01 48 0f af c6 48 ab 89 d1 f3 aa 4c 89 c8 e9 0d d4 12 00 66 66 2e 0f 1f 84 00 RSP: 0018:ffff888013eb7cc0 EFLAGS: 00010216 RAX: 0000000000000000 RBX: ffff88800c0860c0 RCX: 1ffffe21fe605148 RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffed100fffc000 RBP: ffff88800c09f140 R08: 0000000000000005 R09: ffffed1001810c18 R10: 0000000000000001 R11: 0000000000000001 R12: ffff88800c09f140 R13: ffff88800c0860c0 R14: ffffffff815f2620 R15: 1ffff1100112221f FS: 00007f08fb8fd700(0000) GS:ffff88806d100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffed100fffc000 CR3: 000000004554e000 CR4: 0000000000350ee0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff4ff0 DR7: 0000000000000400 loop5: detected capacity change from 0 to 40 syz-executor.5: attempt to access beyond end of device loop5: rw=2049, sector=40, nr_sectors = 4 limit=40 buffer_io_error: 213 callbacks suppressed Buffer I/O error on dev loop5, logical block 10, lost async page write loop5: detected capacity change from 0 to 40 BUG: unable to handle page fault for address: ffffed100fffc000 #PF: supervisor write access in kernel mode #PF: error_code(0x0002) - not-present page PGD 7ffd3067 P4D 7ffd3067 PUD 7ffd2067 PMD 7ffd1067 PTE 0 Oops: 0002 [#2] PREEMPT SMP KASAN NOPTI CPU: 1 PID: 8773 Comm: syz-executor.7 Tainted: G D 6.1.0-rc3-next-20221101 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:__memset+0x24/0x50 Code: 90 90 90 90 90 90 0f 1f 44 00 00 49 89 f9 48 89 d1 83 e2 07 48 c1 e9 03 40 0f b6 f6 48 b8 01 01 01 01 01 01 01 01 48 0f af c6 48 ab 89 d1 f3 aa 4c 89 c8 e9 0d d4 12 00 66 66 2e 0f 1f 84 00 RSP: 0018:ffff888045a57cc0 EFLAGS: 00010216 RAX: 0000000000000000 RBX: ffff88800c086240 RCX: 1ffffe21fe60514e RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffed100fffc000 RBP: ffff88800c09f140 R08: 0000000000000005 R09: ffffed1001810c48 R10: 0000000000000001 R11: 0000000000000001 R12: ffff88800c09f140 R13: ffff88800c086240 R14: ffffffff815f2620 R15: 1ffff11001124e1f FS: 00007f08fb8fd700(0000) GS:ffff88806d100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffed100fffc000 CR3: 0000000044c58000 CR4: 0000000000350ee0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff4ff0 DR7: 0000000000000400 Call Trace: kasan_unpoison+0x23/0x60 mempool_exit+0x1c2/0x330 bioset_exit+0x2c9/0x630 disk_release+0x143/0x490 device_release+0xa2/0x250 kobject_put+0x173/0x280 put_device+0x1b/0x40 put_disk+0x41/0x60 loop_control_ioctl+0x4d1/0x630 __x64_sys_ioctl+0x19a/0x220 do_syscall_64+0x3b/0xa0 entry_SYSCALL_64_after_hwframe+0x72/0xdc RIP: 0033:0x7f08fe387b19 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:00007f08fb8fd188 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007f08fe49af60 RCX: 00007f08fe387b19 RDX: 0000000000000001 RSI: 0000000000004c81 RDI: 0000000000000004 RBP: 00007f08fe3e1f6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fffae1687ff R14: 00007f08fb8fd300 R15: 0000000000022000 Modules linked in: CR2: ffffed100fffc000 ---[ end trace 0000000000000000 ]--- RIP: 0010:__memset+0x24/0x50 syz-executor.5: attempt to access beyond end of device loop5: rw=2049, sector=40, nr_sectors = 4 limit=40 Code: 90 90 90 90 90 90 0f 1f 44 00 00 49 89 f9 48 89 d1 83 e2 07 48 c1 e9 03 40 0f b6 f6 48 b8 01 01 01 01 01 01 01 01 48 0f af c6 48 ab 89 d1 f3 aa 4c 89 c8 e9 0d d4 12 00 66 66 2e 0f 1f 84 00 RSP: 0018:ffff888013eb7cc0 EFLAGS: 00010216 Buffer I/O error on dev loop5, logical block 10, lost async page write RAX: 0000000000000000 RBX: ffff88800c0860c0 RCX: 1ffffe21fe605148 RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffed100fffc000 RBP: ffff88800c09f140 R08: 0000000000000005 R09: ffffed1001810c18 R10: 0000000000000001 R11: 0000000000000001 R12: ffff88800c09f140 R13: ffff88800c0860c0 R14: ffffffff815f2620 R15: 1ffff1100112221f FS: 00007f08fb8fd700(0000) GS:ffff88806d100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffed100fffc000 CR3: 0000000044c58000 CR4: 0000000000350ee0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff4ff0 DR7: 0000000000000400 loop5: detected capacity change from 0 to 40 BUG: unable to handle page fault for address: ffffed100fffc000 #PF: supervisor write access in kernel mode #PF: error_code(0x0002) - not-present page PGD 7ffd3067 P4D 7ffd3067 PUD 7ffd2067 PMD 7ffd1067 PTE 0 Oops: 0002 [#3] PREEMPT SMP KASAN NOPTI CPU: 0 PID: 8821 Comm: syz-executor.7 Tainted: G D 6.1.0-rc3-next-20221101 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:__memset+0x24/0x50 Code: 90 90 90 90 90 90 0f 1f 44 00 00 49 89 f9 48 89 d1 83 e2 07 48 c1 e9 03 40 0f b6 f6 48 b8 01 01 01 01 01 01 01 01 48 0f af c6 48 ab 89 d1 f3 aa 4c 89 c8 e9 0d d4 12 00 66 66 2e 0f 1f 84 00 RSP: 0018:ffff8880422c7cc0 EFLAGS: 00010216 RAX: 0000000000000000 RBX: ffff88800c0863c0 RCX: 1ffffe21fe605154 RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffed100fffc000 RBP: ffff88800c09f140 R08: 0000000000000005 R09: ffffed1001810c78 R10: 0000000000000001 R11: 0000000000000001 R12: ffff88800c09f140 R13: ffff88800c0863c0 R14: ffffffff815f2620 R15: 1ffff11001124a1f FS: 00007f08fb8fd700(0000) GS:ffff88806d000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffed100fffc000 CR3: 000000001f880000 CR4: 0000000000350ef0 DR0: 4000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff4ff0 DR7: 0000000000000600 Call Trace: kasan_unpoison+0x23/0x60 mempool_exit+0x1c2/0x330 bioset_exit+0x2c9/0x630 disk_release+0x143/0x490 device_release+0xa2/0x250 kobject_put+0x173/0x280 put_device+0x1b/0x40 put_disk+0x41/0x60 loop_control_ioctl+0x4d1/0x630 __x64_sys_ioctl+0x19a/0x220 do_syscall_64+0x3b/0xa0 entry_SYSCALL_64_after_hwframe+0x72/0xdc RIP: 0033:0x7f08fe387b19 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:00007f08fb8fd188 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007f08fe49af60 RCX: 00007f08fe387b19 RDX: 0000000000000002 RSI: 0000000000004c81 RDI: 0000000000000004 RBP: 00007f08fe3e1f6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fffae1687ff R14: 00007f08fb8fd300 R15: 0000000000022000 Modules linked in: CR2: ffffed100fffc000 ---[ end trace 0000000000000000 ]--- RIP: 0010:__memset+0x24/0x50 Code: 90 90 90 90 90 90 0f 1f 44 00 00 49 89 f9 48 89 d1 83 e2 07 48 c1 e9 03 40 0f b6 f6 48 b8 01 01 01 01 01 01 01 01 48 0f af c6 48 ab 89 d1 f3 aa 4c 89 c8 e9 0d d4 12 00 66 66 2e 0f 1f 84 00 RSP: 0018:ffff888013eb7cc0 EFLAGS: 00010216 RAX: 0000000000000000 RBX: ffff88800c0860c0 RCX: 1ffffe21fe605148 RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffed100fffc000 RBP: ffff88800c09f140 R08: 0000000000000005 R09: ffffed1001810c18 R10: 0000000000000001 R11: 0000000000000001 R12: ffff88800c09f140 R13: ffff88800c0860c0 R14: ffffffff815f2620 R15: 1ffff1100112221f FS: 00007f08fb8fd700(0000) GS:ffff88806d000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffed100fffc000 CR3: 000000001f880000 CR4: 0000000000350ef0 DR0: 4000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff4ff0 DR7: 0000000000000600 syz-executor.5: attempt to access beyond end of device loop5: rw=2049, sector=40, nr_sectors = 4 limit=40 Buffer I/O error on dev loop5, logical block 10, lost async page write BUG: unable to handle page fault for address: ffffed100fffc000 #PF: supervisor write access in kernel mode #PF: error_code(0x0002) - not-present page PGD 7ffd3067 P4D 7ffd3067 PUD 7ffd2067 PMD 7ffd1067 PTE 0 Oops: 0002 [#4] PREEMPT SMP KASAN NOPTI CPU: 0 PID: 8856 Comm: syz-executor.7 Tainted: G D 6.1.0-rc3-next-20221101 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:__memset+0x24/0x50 Code: 90 90 90 90 90 90 0f 1f 44 00 00 49 89 f9 48 89 d1 83 e2 07 48 c1 e9 03 40 0f b6 f6 48 b8 01 01 01 01 01 01 01 01 48 0f af c6 48 ab 89 d1 f3 aa 4c 89 c8 e9 0d d4 12 00 66 66 2e 0f 1f 84 00 RSP: 0018:ffff88804212fcc0 EFLAGS: 00010216 RAX: 0000000000000000 RBX: ffff88800c086540 RCX: 1ffffe21fe60515a RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffed100fffc000 RBP: ffff88800c09f140 R08: 0000000000000005 R09: ffffed1001810ca8 R10: 0000000000000001 R11: 0000000000000001 R12: ffff88800c09f140 R13: ffff88800c086540 R14: ffffffff815f2620 R15: 1ffff1100112461f FS: 00007f08fb8fd700(0000) GS:ffff88806d000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffed100fffc000 CR3: 00000000411c6000 CR4: 0000000000350ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff4ff0 DR7: 0000000000000600 Call Trace: kasan_unpoison+0x23/0x60 mempool_exit+0x1c2/0x330 bioset_exit+0x2c9/0x630 disk_release+0x143/0x490 device_release+0xa2/0x250 kobject_put+0x173/0x280 put_device+0x1b/0x40 put_disk+0x41/0x60 loop_control_ioctl+0x4d1/0x630 __x64_sys_ioctl+0x19a/0x220 do_syscall_64+0x3b/0xa0 entry_SYSCALL_64_after_hwframe+0x72/0xdc RIP: 0033:0x7f08fe387b19 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:00007f08fb8fd188 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007f08fe49af60 RCX: 00007f08fe387b19 RDX: 0000000000000003 RSI: 0000000000004c81 RDI: 0000000000000004 RBP: 00007f08fe3e1f6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fffae1687ff R14: 00007f08fb8fd300 R15: 0000000000022000 Modules linked in: CR2: ffffed100fffc000 ---[ end trace 0000000000000000 ]--- RIP: 0010:__memset+0x24/0x50 Code: 90 90 90 90 90 90 0f 1f 44 00 00 49 89 f9 48 89 d1 83 e2 07 48 c1 e9 03 40 0f b6 f6 48 b8 01 01 01 01 01 01 01 01 48 0f af c6 48 ab 89 d1 f3 aa 4c 89 c8 e9 0d d4 12 00 66 66 2e 0f 1f 84 00 RSP: 0018:ffff888013eb7cc0 EFLAGS: 00010216 RAX: 0000000000000000 RBX: ffff88800c0860c0 RCX: 1ffffe21fe605148 RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffed100fffc000 RBP: ffff88800c09f140 R08: 0000000000000005 R09: ffffed1001810c18 R10: 0000000000000001 R11: 0000000000000001 R12: ffff88800c09f140 R13: ffff88800c0860c0 R14: ffffffff815f2620 R15: 1ffff1100112221f FS: 00007f08fb8fd700(0000) GS:ffff88806d000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffed100fffc000 CR3: 00000000411c6000 CR4: 0000000000350ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff4ff0 DR7: 0000000000000600 netlink: 12 bytes leftover after parsing attributes in process `syz-executor.5'. netlink: 12 bytes leftover after parsing attributes in process `syz-executor.5'. capability: warning: `syz-executor.7' uses deprecated v2 capabilities in a way that may be insecure EXT4-fs: Ignoring removed nomblk_io_submit option ext4: Unknown parameter 'euid>00000000000000000000' EXT4-fs: Ignoring removed nomblk_io_submit option ext4: Unknown parameter 'euid>00000000000000000000' EXT4-fs: Ignoring removed nomblk_io_submit option ext4: Unknown parameter 'euid>00000000000000000000' EXT4-fs: Ignoring removed nomblk_io_submit option ext4: Unknown parameter 'euid>00000000000000000000' EXT4-fs: Ignoring removed nomblk_io_submit option ext4: Unknown parameter 'euid>00000000000000000000' EXT4-fs: Ignoring removed nomblk_io_submit option ext4: Unknown parameter 'euid>00000000000000000000' EXT4-fs: Ignoring removed nomblk_io_submit option ext4: Unknown parameter 'euid>00000000000000000000' EXT4-fs: Ignoring removed nomblk_io_submit option ext4: Unknown parameter 'euid>00000000000000000000' EXT4-fs: Ignoring removed nomblk_io_submit option ext4: Unknown parameter 'euid>00000000000000000000' EXT4-fs: Ignoring removed nomblk_io_submit option ext4: Unknown parameter 'euid>00000000000000000000' EXT4-fs: Ignoring removed nomblk_io_submit option ext4: Unknown parameter 'euid>00000000000000000000' EXT4-fs: Ignoring removed nomblk_io_submit option ext4: Unknown parameter 'euid>00000000000000000000' EXT4-fs: Ignoring removed nomblk_io_submit option ext4: Unknown parameter 'euid>00000000000000000000' EXT4-fs: Ignoring removed nomblk_io_submit option ext4: Unknown parameter 'euid>00000000000000000000' EXT4-fs: Ignoring removed nomblk_io_submit option ext4: Unknown parameter 'euid>00000000000000000000' syz-executor.4 calls setitimer() with new_value NULL pointer. Misfeature support will be removed EXT4-fs: Ignoring removed nomblk_io_submit option ext4: Unknown parameter 'euid>00000000000000000000' tmpfs: Bad value for 'mpol' tmpfs: Bad value for 'mpol' No source specified No source specified No source specified No source specified mac80211_hwsim: wmediumd released netlink socket, switching to perfect channel medium No source specified tmpfs: Bad value for 'size' loop5: detected capacity change from 0 to 40 loop5: detected capacity change from 0 to 40 mac80211_hwsim: wmediumd released netlink socket, switching to perfect channel medium program syz-executor.7 is using a deprecated SCSI ioctl, please convert it to SG_IO loop5: detected capacity change from 0 to 40 loop5: detected capacity change from 0 to 40 mac80211_hwsim: wmediumd released netlink socket, switching to perfect channel medium audit: type=1400 audit(1667304729.947:14): avc: denied { module_load } for pid=9306 comm="syz-executor.5" path=2F6D656D66643A42DB2F89036CDE62CBB534EDBE4C4BA4673F4B29A0F09B3859B55AE11253F547CCF3E902680BCA2896E143DF1CEA8543FB1013FA0316CD05202864656C6574656429 dev="hugetlbfs" ino=30766 scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:object_r:hugetlbfs_t:s0 tclass=system permissive=1 Invalid ELF header magic: != ELF ---------------- Code disassembly (best guess): 0: 90 nop 1: 90 nop 2: 90 nop 3: 90 nop 4: 90 nop 5: 90 nop 6: 0f 1f 44 00 00 nopl 0x0(%rax,%rax,1) b: 49 89 f9 mov %rdi,%r9 e: 48 89 d1 mov %rdx,%rcx 11: 83 e2 07 and $0x7,%edx 14: 48 c1 e9 03 shr $0x3,%rcx 18: 40 0f b6 f6 movzbl %sil,%esi 1c: 48 b8 01 01 01 01 01 movabs $0x101010101010101,%rax 23: 01 01 01 26: 48 0f af c6 imul %rsi,%rax * 2a: f3 48 ab rep stos %rax,%es:(%rdi) <-- trapping instruction 2d: 89 d1 mov %edx,%ecx 2f: f3 aa rep stos %al,%es:(%rdi) 31: 4c 89 c8 mov %r9,%rax 34: e9 0d d4 12 00 jmpq 0x12d446 39: 66 data16 3a: 66 data16 3b: 2e cs 3c: 0f .byte 0xf 3d: 1f (bad) 3e: 84 00 test %al,(%rax)