------------[ cut here ]------------
kernfs_put: syz7/memory.events.local: released with incorrect active_ref 0
WARNING: CPU: 0 PID: 6 at fs/kernfs/dir.c:531 kernfs_put.part.0+0x433/0x540
Modules linked in:
CPU: 0 PID: 6 Comm: kworker/0:0 Not tainted 5.19.0-rc5-next-20220706 #1
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014
Workqueue: events kernfs_notify_workfn
RIP: 0010:kernfs_put.part.0+0x433/0x540
Code: 03 80 3c 18 00 0f 85 ea 00 00 00 4d 8b 7d 38 e8 53 fc a6 ff 48 8b 14 24 44 89 f1 4c 89 fe 48 c7 c7 e0 5b 72 84 e8 13 aa 6c 02 <0f> 0b e9 b9 fc ff ff 48 89 ef e8 0e b3 d9 ff e9 c1 fd ff ff e8 04
------------[ cut here ]------------
WARNING: CPU: 0 PID: 6 at fs/kernfs/dir.c:504 kernfs_get.part.0+0x69/0x80
Modules linked in:
CPU: 0 PID: 6 Comm: kworker/0:0 Not tainted 5.19.0-rc5-next-20220706 #1
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014
Workqueue: events kernfs_notify_workfn
RIP: 0010:kernfs_get.part.0+0x69/0x80
Code: 31 ff 89 ee e8 a8 fd a6 ff 85 ed 74 18 e8 cf 00 a7 ff be 04 00 00 00 48 89 df e8 d2 ba d9 ff f0 ff 03 5b 5d c3 e8 b7 00 a7 ff <0f> 0b eb df 48 89 df e8 7b b7 d9 ff eb c6 66 0f 1f 84 00 00 00 00
RSP: 0018:ffff88806ce09c80 EFLAGS: 00010046
RAX: 0000000000000000 RBX: ffff888020290000 RCX: 0000000000000100
RDX: ffff888008201ac0 RSI: ffffffff819df849 RDI: 0000000000000005
RBP: 0000000000000000 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000001 R12: 0000000000000001
R13: 1ffffffff0a01e40 R14: ffff888020290000 R15: ffff88803d2304f0
FS: 0000000000000000(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020056000 CR3: 000000001bb5a000 CR4: 0000000000350ef0
DR0: 0100000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff4ff0 DR7: 0000000000000600
Call Trace:
kernfs_get+0x1b/0x30
kernfs_notify+0x180/0x350
cgroup_file_notify+0xf5/0x1a0
call_timer_fn+0x17d/0x5f0
__run_timers.part.0+0x65e/0xa50
run_timer_softirq+0xae/0x1a0
__do_softirq+0x1c8/0x8cc
__irq_exit_rcu+0x113/0x170
irq_exit_rcu+0x5/0x20
sysvec_apic_timer_interrupt+0x8e/0xc0
asm_sysvec_apic_timer_interrupt+0x1b/0x20
RIP: 0010:console_emit_next_record.constprop.0+0x4c8/0x800
Code: 83 e2 07 38 d0 7f 08 84 c0 0f 85 d5 02 00 00 88 5d 00 e8 db 3e 00 00 31 ff 4c 89 f6 e8 61 61 19 00 4d 85 f6 0f 85 76 01 00 00 63 64 19 00 48 b8 00 00 00 00 00 fc ff df 48 03 04 24 48 c7 00
RSP: 0018:ffff888008217630 EFLAGS: 00000206
RAX: 000000000001733f RBX: 0000000000000000 RCX: ffffffff8128d13f
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000
RBP: ffff8880082177d8 R08: 0000000000000001 R09: ffffffff86a607c7
R10: fffffbfff0d4c0f8 R11: 0000000000000001 R12: 0000000000000001
R13: ffffffff86dacba0 R14: 0000000000000200 R15: ffffffff854a01b8
console_unlock+0x36c/0x590
vprintk_emit+0x1b9/0x550
vprintk+0x80/0x90
_printk+0xba/0xed
show_opcodes.cold+0x1c/0x21
show_iret_regs+0xd/0x33
__show_regs+0x1e/0x60
show_regs+0x2f/0x40
__warn+0xe2/0x190
report_bug+0x1bc/0x210
handle_bug+0x3c/0x60
exc_invalid_op+0x14/0x40
asm_exc_invalid_op+0x1b/0x20
RIP: 0010:kernfs_put.part.0+0x433/0x540
Code: 03 80 3c 18 00 0f 85 ea 00 00 00 4d 8b 7d 38 e8 53 fc a6 ff 48 8b 14 24 44 89 f1 4c 89 fe 48 c7 c7 e0 5b 72 84 e8 13 aa 6c 02 <0f> 0b e9 b9 fc ff ff 48 89 ef e8 0e b3 d9 ff e9 c1 fd ff ff e8 04
RSP: 0018:ffff888008217bd8 EFLAGS: 00010286
RAX: 0000000000000000 RBX: dffffc0000000000 RCX: 0000000000000000
RDX: ffff888008201ac0 RSI: ffffffff812bd348 RDI: ffffed1001042f6d
RBP: ffff888020290038 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000001 R12: ffff888020290000
R13: ffff888032986658 R14: 0000000000000000 R15: ffff88800f3c35c8
kernfs_put+0x42/0x50
kernfs_notify_workfn+0x417/0x560
process_one_work+0xa0f/0x1690
worker_thread+0x637/0x1250
kthread+0x2ed/0x3a0
ret_from_fork+0x22/0x30
irq event stamp: 95051
hardirqs last enabled at (95050): [] _raw_spin_unlock_irq+0x1f/0x40
hardirqs last disabled at (95051): [] _raw_spin_lock_irqsave+0x4e/0x50
softirqs last enabled at (94974): [] __irq_exit_rcu+0x113/0x170
softirqs last disabled at (95041): [] __irq_exit_rcu+0x113/0x170
---[ end trace 0000000000000000 ]---
EXT4-fs warning (device sda): verify_group_input:147: Cannot add at group 1025 (only 16 groups)
RSP: 0018:ffff888008217bd8 EFLAGS: 00010286
RAX: 0000000000000000 RBX: dffffc0000000000 RCX: 0000000000000000
RDX: ffff888008201ac0 RSI: ffffffff812bd348 RDI: ffffed1001042f6d
RBP: ffff888020290038 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000001 R12: ffff888020290000
R13: ffff888032986658 R14: 0000000000000000 R15: ffff88800f3c35c8
FS: 0000000000000000(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020056000 CR3: 000000001bb5a000 CR4: 0000000000350ef0
DR0: 0100000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff4ff0 DR7: 0000000000000600
Call Trace:
kernfs_put+0x42/0x50
kernfs_notify_workfn+0x417/0x560
process_one_work+0xa0f/0x1690
worker_thread+0x637/0x1250
kthread+0x2ed/0x3a0
ret_from_fork+0x22/0x30
irq event stamp: 96781
hardirqs last enabled at (96795): [] __up_console_sem+0x78/0x80
hardirqs last disabled at (96808): [] __up_console_sem+0x5d/0x80
softirqs last enabled at (96398): [] __irq_exit_rcu+0x113/0x170
softirqs last disabled at (96315): [] __irq_exit_rcu+0x113/0x170
---[ end trace 0000000000000000 ]---
==================================================================
BUG: KASAN: use-after-free in llist_del_first+0x89/0xa0
Read of size 8 at addr ffff888020290080 by task kworker/0:0/6
CPU: 0 PID: 6 Comm: kworker/0:0 Tainted: G W 5.19.0-rc5-next-20220706 #1
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014
Workqueue: events kernfs_notify_workfn
Call Trace:
dump_stack_lvl+0x8b/0xb3
print_report.cold+0x5e/0x5e1
kasan_report+0xb1/0x1b0
llist_del_first+0x89/0xa0
kernfs_notify_workfn+0x78/0x560
process_one_work+0xa0f/0x1690
worker_thread+0x637/0x1250
kthread+0x2ed/0x3a0
ret_from_fork+0x22/0x30
Allocated by task 301:
kasan_save_stack+0x1e/0x40
__kasan_slab_alloc+0x66/0x80
kmem_cache_alloc+0x1b1/0x490
__kernfs_new_node+0xd4/0x8b0
kernfs_new_node+0x93/0x120
__kernfs_create_file+0x51/0x350
cgroup_addrm_files+0x3e2/0x9d0
css_populate_dir+0x19b/0x450
cgroup_apply_control_enable+0x3ae/0xa40
cgroup_mkdir+0x824/0x11f0
kernfs_iop_mkdir+0x149/0x1d0
vfs_mkdir+0x417/0x6a0
do_mkdirat+0x17b/0x2e0
__x64_sys_mkdir+0xf2/0x140
do_syscall_64+0x3b/0x90
entry_SYSCALL_64_after_hwframe+0x46/0xb0
Freed by task 6:
kasan_save_stack+0x1e/0x40
kasan_set_track+0x21/0x30
kasan_set_free_info+0x20/0x30
__kasan_slab_free+0x108/0x190
kmem_cache_free+0xfb/0x600
kernfs_put.part.0+0x2c7/0x540
kernfs_put+0x42/0x50
kernfs_notify_workfn+0x417/0x560
process_one_work+0xa0f/0x1690
worker_thread+0x637/0x1250
kthread+0x2ed/0x3a0
ret_from_fork+0x22/0x30
The buggy address belongs to the object at ffff888020290000
which belongs to the cache kernfs_node_cache of size 168
The buggy address is located 128 bytes inside of
168-byte region [ffff888020290000, ffff8880202900a8)
The buggy address belongs to the physical page:
page:000000001fbb1cf9 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x20290
flags: 0x100000000000200(slab|node=0|zone=1)
raw: 0100000000000200 0000000000000000 dead000000000122 ffff8880080358c0
raw: 0000000000000000 0000000000110011 00000001ffffffff 0000000000000000
page dumped because: kasan: bad access detected
Memory state around the buggy address:
ffff88802028ff80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
ffff888020290000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
>ffff888020290080: fb fb fb fb fb fc fc fc fc fc fc fc fc 00 00 00
^
ffff888020290100: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
ffff888020290180: 00 00 fc fc fc fc fc fc fc fc 00 00 00 00 00 00
==================================================================
netlink: 4 bytes leftover after parsing attributes in process `syz-executor.4'.
netlink: 4 bytes leftover after parsing attributes in process `syz-executor.4'.
EXT4-fs warning (device sda): verify_group_input:147: Cannot add at group 1025 (only 16 groups)
BUG: kernel NULL pointer dereference, address: 0000000000000018
#PF: supervisor read access in kernel mode
#PF: error_code(0x0000) - not-present page
PGD 0 P4D 0
Oops: 0000 [#1] PREEMPT SMP KASAN NOPTI
CPU: 1 PID: 111 Comm: systemd-journal Tainted: G B W 5.19.0-rc5-next-20220706 #1
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014
RIP: 0010:qlist_free_all+0xd3/0x190
Code: 03 05 a1 76 7b 03 48 8b 48 08 48 89 c2 f6 c1 01 0f 85 b6 00 00 00 0f 1f 44 00 00 48 8b 02 f6 c4 02 b8 00 00 00 00 48 0f 44 d0 <4c> 8b 72 18 e9 50 ff ff ff 49 83 7e 48 00 0f 85 68 ff ff ff 41 f7
RSP: 0018:ffff8880186f7c70 EFLAGS: 00010246
RAX: 0000000000000000 RBX: ffff88803ee3fbb5 RCX: 0000000000000000
RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffffffff81771eb1
RBP: 0000000000000000 R08: ffff88803ee3fbb5 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000001 R12: dffffc0000000000
R13: ffff8880186f7cb0 R14: 0000000000000000 R15: ffff888020290000
FS: 00007ff4db64b900(0000) GS:ffff88806cf00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000018 CR3: 000000000eade000 CR4: 0000000000350ee0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff4ff0 DR7: 0000000000000600
Call Trace:
kasan_quarantine_reduce+0x180/0x200
__kasan_slab_alloc+0x78/0x80
kmem_cache_alloc+0x1b1/0x490
getname_flags.part.0+0x50/0x4f0
getname+0x8e/0xd0
do_sys_openat2+0xf5/0x4c0
__x64_sys_openat+0x13f/0x1f0
do_syscall_64+0x3b/0x90
entry_SYSCALL_64_after_hwframe+0x46/0xb0
RIP: 0033:0x7ff4dbf04df3
Code: 89 7c 24 18 44 89 54 24 0c e8 a9 5f f9 ff 44 8b 54 24 0c 8b 54 24 1c 41 89 c0 48 8b 74 24 10 8b 7c 24 18 b8 01 01 00 00 0f 05 <48> 3d 00 f0 ff ff 77 35 44 89 c7 89 44 24 0c e8 d9 5f f9 ff 8b 44
RSP: 002b:00007ffe10ae2bd0 EFLAGS: 00000293 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007ff4dbf04df3
RDX: 00000000002a0000 RSI: 000055ec5cf74e81 RDI: 0000000000000017
RBP: 00007ffe10ae2e00 R08: 0000000000000000 R09: 00303a303a317465
R10: 0000000000000000 R11: 0000000000000293 R12: 000055ec5cf74e80
R13: 00007ffe10ae2e90 R14: 0000000000000001 R15: 000055ec5cf7b848
Modules linked in:
CR2: 0000000000000018
---[ end trace 0000000000000000 ]---
RIP: 0010:qlist_free_all+0xd3/0x190
Code: 03 05 a1 76 7b 03 48 8b 48 08 48 89 c2 f6 c1 01 0f 85 b6 00 00 00 0f 1f 44 00 00 48 8b 02 f6 c4 02 b8 00 00 00 00 48 0f 44 d0 <4c> 8b 72 18 e9 50 ff ff ff 49 83 7e 48 00 0f 85 68 ff ff ff 41 f7
RSP: 0018:ffff8880186f7c70 EFLAGS: 00010246
RAX: 0000000000000000 RBX: ffff88803ee3fbb5 RCX: 0000000000000000
RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffffffff81771eb1
RBP: 0000000000000000 R08: ffff88803ee3fbb5 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000001 R12: dffffc0000000000
R13: ffff8880186f7cb0 R14: 0000000000000000 R15: ffff888020290000
FS: 00007ff4db64b900(0000) GS:ffff88806cf00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000018 CR3: 000000000eade000 CR4: 0000000000350ee0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff4ff0 DR7: 0000000000000600
systemd[1]: systemd-journald.service: Scheduled restart job, restart counter is at 1.
BUG: kernel NULL pointer dereference, address: 00000000000000d8
#PF: supervisor write access in kernel mode
#PF: error_code(0x0002) - not-present page
PGD 3dd53067 P4D 3dd53067 PUD 0
Oops: 0002 [#2] PREEMPT SMP KASAN NOPTI
CPU: 0 PID: 6 Comm: kworker/0:0 Tainted: G B D W 5.19.0-rc5-next-20220706 #1
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014
Workqueue: events kernfs_notify_workfn
RIP: 0010:down_write+0xbf/0x150
Code: 00 00 00 48 c7 44 24 28 00 00 00 00 e8 8a 52 5c fd be 08 00 00 00 48 8d 7c 24 28 e8 7b 52 5c fd ba 01 00 00 00 48 8b 44 24 28 48 0f b1 55 00 0f 94 c0 5a 84 c0 74 5b 4c 8d 6d 08 be 08 00 00
systemd[1]: Stopping Flush Journal to Persistent Storage...
RSP: 0018:ffff888008217bb8 EFLAGS: 00010246
RAX: 0000000000000000 RBX: 1ffff11001042f78 RCX: ffffffff841b6095
RDX: 0000000000000001 RSI: 0000000000000008 RDI: ffff888008217be0
RBP: 00000000000000d8 R08: 0000000000000001 R09: ffff888008217be7
R10: ffffed1001042f7c R11: 0000000000000001 R12: dffffc0000000000
R13: ffff8880080bc078 R14: ffff888020290000 R15: dffffc0000000000
FS: 0000000000000000(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00000000000000d8 CR3: 000000000e7a6000 CR4: 0000000000350ef0
DR0: 0100000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff4ff0 DR7: 0000000000000600
Call Trace:
kernfs_notify_workfn+0xe5/0x560
process_one_work+0xa0f/0x1690
worker_thread+0x637/0x1250
kthread+0x2ed/0x3a0
ret_from_fork+0x22/0x30
Modules linked in:
CR2: 00000000000000d8
---[ end trace 0000000000000000 ]---
RIP: 0010:qlist_free_all+0xd3/0x190
Code: 03 05 a1 76 7b 03 48 8b 48 08 48 89 c2 f6 c1 01 0f 85 b6 00 00 00 0f 1f 44 00 00 48 8b 02 f6 c4 02 b8 00 00 00 00 48 0f 44 d0 <4c> 8b 72 18 e9 50 ff ff ff 49 83 7e 48 00 0f 85 68 ff ff ff 41 f7
RSP: 0018:ffff8880186f7c70 EFLAGS: 00010246
RAX: 0000000000000000 RBX: ffff88803ee3fbb5 RCX: 0000000000000000
RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffffffff81771eb1
RBP: 0000000000000000 R08: ffff88803ee3fbb5 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000001 R12: dffffc0000000000
R13: ffff8880186f7cb0 R14: 0000000000000000 R15: ffff888020290000
FS: 0000000000000000(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00000000000000d8 CR3: 000000000e7a6000 CR4: 0000000000350ef0
DR0: 0100000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff4ff0 DR7: 0000000000000600
systemd[1]: systemd-journal-flush.service: Succeeded.
BUG: kernel NULL pointer dereference, address: 0000000000000018
#PF: supervisor read access in kernel mode
#PF: error_code(0x0000) - not-present page
PGD 0 P4D 0
Oops: 0000 [#3] PREEMPT SMP KASAN NOPTI
CPU: 1 PID: 1 Comm: systemd Tainted: G B D W 5.19.0-rc5-next-20220706 #1
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014
RIP: 0010:qlist_free_all+0xd3/0x190
Code: 03 05 a1 76 7b 03 48 8b 48 08 48 89 c2 f6 c1 01 0f 85 b6 00 00 00 0f 1f 44 00 00 48 8b 02 f6 c4 02 b8 00 00 00 00 48 0f 44 d0 <4c> 8b 72 18 e9 50 ff ff ff 49 83 7e 48 00 0f 85 68 ff ff ff 41 f7
RSP: 0018:ffff8880081b7c70 EFLAGS: 00010246
RAX: 0000000000000000 RBX: ffff88800d44ef81 RCX: 0000000000000000
RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffffffff81771eb1
RBP: 0000000000000000 R08: ffff88800d44ef81 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000001 R12: dffffc0000000000
R13: ffff8880081b7cb0 R14: 0000000000000000 R15: ffff8880092a0cb0
FS: 00007f81464d5900(0000) GS:ffff88806cf00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000018 CR3: 000000000de78000 CR4: 0000000000350ee0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff4ff0 DR7: 0000000000000600
Call Trace:
kasan_quarantine_reduce+0x180/0x200
__kasan_slab_alloc+0x78/0x80
kmem_cache_alloc+0x1b1/0x490
getname_flags.part.0+0x50/0x4f0
getname+0x8e/0xd0
do_sys_openat2+0xf5/0x4c0
__x64_sys_openat+0x13f/0x1f0
do_syscall_64+0x3b/0x90
entry_SYSCALL_64_after_hwframe+0x46/0xb0
RIP: 0033:0x7f8146ca2c64
Code: 84 00 00 00 00 00 44 89 54 24 0c e8 36 61 f9 ff 44 8b 54 24 0c 44 89 e2 48 89 ee 41 89 c0 bf 9c ff ff ff b8 01 01 00 00 0f 05 <48> 3d 00 f0 ff ff 77 34 44 89 c7 89 44 24 0c e8 68 61 f9 ff 8b 44
RSP: 002b:00007ffc00328cf0 EFLAGS: 00000293 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 00005611cb2a5bf0 RCX: 00007f8146ca2c64
RDX: 0000000000080000 RSI: 00005611cb36e1d0 RDI: 00000000ffffff9c
RBP: 00005611cb36e1d0 R08: 0000000000000000 R09: 0000000000000001
R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000080000
R13: 00005611cb2a5bf0 R14: 0000000000000001 R15: 0000000000000001
Modules linked in:
CR2: 0000000000000018
---[ end trace 0000000000000000 ]---
RIP: 0010:qlist_free_all+0xd3/0x190
Code: 03 05 a1 76 7b 03 48 8b 48 08 48 89 c2 f6 c1 01 0f 85 b6 00 00 00 0f 1f 44 00 00 48 8b 02 f6 c4 02 b8 00 00 00 00 48 0f 44 d0 <4c> 8b 72 18 e9 50 ff ff ff 49 83 7e 48 00 0f 85 68 ff ff ff 41 f7
RSP: 0018:ffff8880186f7c70 EFLAGS: 00010246
RAX: 0000000000000000 RBX: ffff88803ee3fbb5 RCX: 0000000000000000
RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffffffff81771eb1
RBP: 0000000000000000 R08: ffff88803ee3fbb5 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000001 R12: dffffc0000000000
R13: ffff8880186f7cb0 R14: 0000000000000000 R15: ffff888020290000
FS: 00007f81464d5900(0000) GS:ffff88806cf00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000018 CR3: 000000000de78000 CR4: 0000000000350ee0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff4ff0 DR7: 0000000000000600
----------------
Code disassembly (best guess):
0: 83 e2 07 and $0x7,%edx
3: 38 d0 cmp %dl,%al
5: 7f 08 jg 0xf
7: 84 c0 test %al,%al
9: 0f 85 d5 02 00 00 jne 0x2e4
f: 88 5d 00 mov %bl,0x0(%rbp)
12: e8 db 3e 00 00 callq 0x3ef2
17: 31 ff xor %edi,%edi
19: 4c 89 f6 mov %r14,%rsi
1c: e8 61 61 19 00 callq 0x196182
21: 4d 85 f6 test %r14,%r14
24: 0f 85 76 01 00 00 jne 0x1a0
* 2a: e8 63 64 19 00 callq 0x196492 <-- trapping instruction
2f: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax
36: fc ff df
39: 48 03 04 24 add (%rsp),%rax
3d: 48 rex.W
3e: c7 .byte 0xc7