bisecting fixing commit since aec3002d07fd2564cd32e56f126fa6db14a168bb building syzkaller on 907bf74686129436f81aa40336ee89f7cc01b0b4 testing commit aec3002d07fd2564cd32e56f126fa6db14a168bb with gcc (GCC) 8.4.1 20210217 kernel signature: 6eb8eeaedb68e9397b47190d3dd8befb619e9b9853f2fe717e8c30ae9c1c2ff6 all runs: crashed: WARNING in perf_group_attach testing current HEAD 2965db2e004cf9c92b87c1f559e9812c0ae878c1 testing commit 2965db2e004cf9c92b87c1f559e9812c0ae878c1 with gcc (GCC) 8.4.1 20210217 kernel signature: 978de443f48ce4dbb1d3ff87a89e1f47618543889de46bd348f5e430178f25df all runs: crashed: WARNING in perf_group_attach revisions tested: 2, total time: 27m2.53180848s (build: 19m56.390095609s, test: 6m10.15708414s) the crash still happens on HEAD commit msg: Linux 4.19.188 crash: WARNING in perf_group_attach IPv6: ADDRCONF(NETDEV_UP): vxcan1: link is not ready IPv6: ADDRCONF(NETDEV_UP): vxcan1: link is not ready 8021q: adding VLAN 0 to HW filter on device batadv0 8021q: adding VLAN 0 to HW filter on device batadv0 WARNING: CPU: 0 PID: 6947 at kernel/events/core.c:1840 perf_group_attach+0x3b1/0x470 kernel/events/core.c:1832 Modules linked in: CPU: 0 PID: 6947 Comm: syz-executor.2 Not tainted 4.19.188-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:perf_group_attach+0x3b1/0x470 kernel/events/core.c:1840 Code: ec 10 4c 39 e3 75 d7 48 83 c4 08 5b 41 5c 41 5d 41 5e 41 5f 5d c3 e8 ce 52 1d 00 e9 c8 fc ff ff e8 c4 52 1d 00 e9 fe fc ff ff <0f> 0b e9 75 fd ff ff e8 d3 52 1d 00 eb c1 e8 cc 52 1d 00 e9 6d fc RSP: 0018:ffff8881f6807ec0 EFLAGS: 00010006 RAX: dffffc0000000000 RBX: ffff8881d0150bc0 RCX: 1ffff1103a02a082 RDX: 1ffff1103a02a0ab RSI: ffff8881f6831460 RDI: ffff8881d0150558 RBP: ffff8881f6807ef0 R08: ffffffff890a8018 R09: 0000000000000006 R10: fffffbfff1215001 R11: 0000000000000001 R12: ffff8881d0150340 R13: ffffe8ffffc11bd0 R14: 0000000000000000 R15: ffff8881f6831448 FS: 00007fa553b6b700(0000) GS:ffff8881f6800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000055570a930f98 CR3: 00000001d99a2006 CR4: 00000000001606f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600 Call Trace: add_event_to_ctx kernel/events/core.c:2398 [inline] __perf_install_in_context+0x3f6/0x880 kernel/events/core.c:2539 remote_function kernel/events/core.c:87 [inline] remote_function+0xff/0x180 kernel/events/core.c:67 flush_smp_call_function_queue+0x10e/0x3d0 kernel/smp.c:243 generic_smp_call_function_single_interrupt+0xe/0x20 kernel/smp.c:192 smp_call_function_single_interrupt+0xa0/0x440 arch/x86/kernel/smp.c:304 call_function_single_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:916 RIP: 0010:arch_local_irq_restore arch/x86/include/asm/paravirt.h:789 [inline] RIP: 0010:__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:160 [inline] RIP: 0010:_raw_spin_unlock_irqrestore+0xaf/0xd0 kernel/locking/spinlock.c:184 Code: 08 01 12 88 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 80 3c 02 00 75 28 48 83 3d c0 be 89 01 00 74 15 48 89 df 57 9d <0f> 1f 44 00 00 eb ad e8 8f 0e 78 fa eb bb 0f 0b 0f 0b e8 ca ee 07 RSP: 0018:ffff8881d7667938 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff04 RAX: dffffc0000000000 RBX: 0000000000000286 RCX: 0000000000000000 RDX: 1ffffffff1024021 RSI: 0000000000000001 RDI: 0000000000000286 RBP: ffff8881d7667948 R08: ffffed103af31522 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: ffff8881d798a908 R13: ffff8881d798a140 R14: ffff8881f692c380 R15: 0000000000000001 try_to_wake_up+0xc2/0xf20 kernel/sched/core.c:2056 wake_up_process kernel/sched/core.c:2124 [inline] wake_up_q+0xa4/0x100 kernel/sched/core.c:442 futex_wake+0x340/0x5a0 kernel/futex.c:1706 do_futex+0x599/0x1550 kernel/futex.c:3895 __do_sys_futex kernel/futex.c:3951 [inline] __se_sys_futex kernel/futex.c:3919 [inline] __x64_sys_futex+0x1cb/0x3a0 kernel/futex.c:3919 do_syscall_64+0xd0/0x4e0 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x460c99 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:00007fa553b6b218 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca RAX: ffffffffffffffda RBX: 000000000052bfb0 RCX: 0000000000460c99 RDX: 00000000004b2232 RSI: 0000000000000081 RDI: 000000000052bfb4 RBP: 000000000052bfa8 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000004 R11: 0000000000000246 R12: 000000000052bfb4 R13: 00007fff309df57f R14: 00007fa553b6b300 R15: 0000000000022000 irq event stamp: 126 hardirqs last enabled at (125): [] __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:160 [inline] hardirqs last enabled at (125): [] _raw_spin_unlock_irqrestore+0x82/0xd0 kernel/locking/spinlock.c:184 hardirqs last disabled at (126): [] trace_hardirqs_off_thunk+0x1a/0x1c softirqs last enabled at (0): [] copy_process.part.34+0x179c/0x76d0 kernel/fork.c:1855 softirqs last disabled at (0): [<0000000000000000>] (null) ---[ end trace e64ed1d27763cf3d ]--- WARNING: CPU: 0 PID: 0 at kernel/events/core.c:1999 INIT_LIST_HEAD include/linux/list.h:29 [inline] WARNING: CPU: 0 PID: 0 at kernel/events/core.c:1999 list_del_init include/linux/list.h:160 [inline] WARNING: CPU: 0 PID: 0 at kernel/events/core.c:1999 perf_event_ctx_deactivate kernel/events/core.c:1175 [inline] WARNING: CPU: 0 PID: 0 at kernel/events/core.c:1999 event_sched_out.isra.99+0x69b/0x970 kernel/events/core.c:2026 Modules linked in: CPU: 0 PID: 0 Comm: swapper/0 Tainted: G W 4.19.188-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:event_sched_out.isra.99+0x69b/0x970 kernel/events/core.c:1999 Code: 89 9d c0 00 00 00 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 80 3c 02 00 0f 85 5d 02 00 00 49 89 9d c8 00 00 00 e9 39 fd ff ff <0f> 0b e9 ac f9 ff ff 65 48 8b 1c 25 40 ee 01 00 48 8d bb 84 08 00 RSP: 0018:ffff8881f6807dd8 EFLAGS: 00010083 RAX: dffffc0000000000 RBX: ffff8881d0150bc0 RCX: ffffe8ffffc11bd0 RDX: 1ffff1103a02a0ab RSI: ffffe8ffffc11d68 RDI: ffff8881d0150558 RBP: ffff8881f6807e28 R08: ffffed103a02a1b4 R09: 1ffff1103ed050a1 R10: ffffed103a02a1b3 R11: ffff8881d0150d9f R12: ffffe8ffffc11bd0 R13: ffffe8ffffc11bd0 R14: ffff8881d0150340 R15: ffff8881d0150340 FS: 0000000000000000(0000) GS:ffff8881f6800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000055570a932140 CR3: 000000000806d001 CR4: 00000000001606f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600 Call Trace: group_sched_out.part.100+0x17b/0x1f0 kernel/events/core.c:2053 group_sched_out kernel/events/core.c:2042 [inline] ctx_sched_out+0x6a0/0x940 kernel/events/core.c:2963 cpu_ctx_sched_out kernel/events/core.c:3246 [inline] ctx_resched+0xc4/0xe0 kernel/events/core.c:2478 __perf_install_in_context+0x40d/0x880 kernel/events/core.c:2540 remote_function kernel/events/core.c:87 [inline] remote_function+0xff/0x180 kernel/events/core.c:67 flush_smp_call_function_queue+0x10e/0x3d0 kernel/smp.c:243 generic_smp_call_function_single_interrupt+0xe/0x20 kernel/smp.c:192 smp_call_function_single_interrupt+0xa0/0x440 arch/x86/kernel/smp.c:304 call_function_single_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:916 RIP: 0010:native_safe_halt+0x12/0x20 arch/x86/include/asm/irqflags.h:61 Code: 11 ff ff ff 4c 89 e7 e8 9c 03 08 fb eb 97 90 90 90 90 90 90 90 90 90 90 55 48 89 e5 e9 07 00 00 00 0f 00 2d 30 26 5f 00 fb f4 <5d> c3 66 66 2e 0f 1f 84 00 00 00 00 00 90 55 48 89 e5 e9 07 00 00 RSP: 0018:ffffffff88007c88 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff04 RAX: dffffc0000000000 RBX: ffffffff88079300 RCX: 0000000000000000 RDX: 1ffffffff1024024 RSI: 0000000000000001 RDI: ffffffff88120120 RBP: ffffffff88007c88 R08: ffffed103ed04733 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 R13: ffffffff88120110 R14: ffffffff88d3a0e0 R15: 0000000000000000 arch_safe_halt arch/x86/include/asm/paravirt.h:94 [inline] default_idle+0x51/0x310 arch/x86/kernel/process.c:557 arch_cpu_idle+0xa/0x10 arch/x86/kernel/process.c:548 default_idle_call+0x6d/0x90 kernel/sched/idle.c:93 cpuidle_idle_call kernel/sched/idle.c:153 [inline] do_idle+0x41e/0x560 kernel/sched/idle.c:263 cpu_startup_entry+0xc8/0xe0 kernel/sched/idle.c:369 rest_init+0x193/0x199 init/main.c:441 start_kernel+0x5f0/0x62c init/main.c:736 x86_64_start_reservations+0x29/0x2b arch/x86/kernel/head64.c:490 x86_64_start_kernel+0x76/0x79 arch/x86/kernel/head64.c:471 secondary_startup_64+0xa4/0xb0 arch/x86/kernel/head_64.S:243 irq event stamp: 255338 hardirqs last enabled at (255335): [] default_idle+0x1c/0x310 arch/x86/kernel/process.c:557 hardirqs last disabled at (255336): [] trace_hardirqs_off_thunk+0x1a/0x1c softirqs last enabled at (255338): [] _local_bh_enable+0x1c/0x30 kernel/softirq.c:162 softirqs last disabled at (255337): [] irq_enter+0xa7/0xe0 kernel/softirq.c:358 ---[ end trace e64ed1d27763cf3e ]--- WARNING: CPU: 0 PID: 3307 at kernel/events/core.c:1943 perf_group_detach+0x65f/0x970 kernel/events/core.c:1900 Modules linked in: CPU: 0 PID: 3307 Comm: systemd-udevd Tainted: G W 4.19.188-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:perf_group_detach+0x65f/0x970 kernel/events/core.c:1943 Code: b8 be ff ff ff ff 48 8d 78 20 e8 4c 6f d7 ff 85 c0 0f 85 38 fa ff ff 48 c7 c7 20 f9 f0 86 e8 50 a7 fe 04 0f 0b e9 25 fa ff ff <0f> 0b e9 62 fb ff ff 49 8d 7c 24 10 48 b8 00 00 00 00 00 fc ff df RSP: 0000:ffff8881f6807e18 EFLAGS: 00010083 RAX: ffffed103a02a1bb RBX: ffff8881d0150340 RCX: ffffe8ffffc11bd0 RDX: ffffe8ffffc11ce0 RSI: ffff8881d0151460 RDI: ffff8881d0150558 RBP: ffff8881f6807e90 R08: 0000000000000000 R09: ffff8881d0151460 R10: ffff8881d0150360 R11: ffffe8ffffc11ce8 R12: dffffc0000000000 R13: ffff8881d0150bc0 R14: ffff8881f6831440 R15: ffff8881d0150bc0 FS: 00007f31faf258c0(0000) GS:ffff8881f6800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000055570a93b560 CR3: 00000001daa7e006 CR4: 00000000001606f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 000000000111062a Call Trace: __perf_remove_from_context+0x1a2/0x400 kernel/events/core.c:2084 event_function+0x2bb/0x3d0 kernel/events/core.c:248 remote_function kernel/events/core.c:87 [inline] remote_function+0xff/0x180 kernel/events/core.c:67 flush_smp_call_function_queue+0x10e/0x3d0 kernel/smp.c:243 generic_smp_call_function_single_interrupt+0xe/0x20 kernel/smp.c:192 smp_call_function_single_interrupt+0xa0/0x440 arch/x86/kernel/smp.c:304 call_function_single_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:916 RIP: 0010:copy_page+0x7/0x10 arch/x86/lib/copy_page_64.S:19 Code: ac 48 8b 55 b0 48 8b 75 b8 8b 45 c0 4c 8b 45 c8 4c 8b 4d d0 e9 3f fd ff ff 90 90 90 90 90 90 90 90 90 90 66 90 b9 00 02 00 00 48 a5 c3 0f 1f 44 00 00 48 83 ec 10 48 89 1c 24 4c 89 64 24 08 RSP: 0000:ffff8881daacfab0 EFLAGS: 00010286 ORIG_RAX: ffffffffffffff04 RAX: 0000000000000000 RBX: ffff888000000000 RCX: 0000000000000038 RDX: 1ffff1103b55828c RSI: ffff8881ca070e40 RDI: ffff8881ca0eee40 RBP: ffff8881daacfad0 R08: ffffed103ed04733 R09: ffffed103ed04732 R10: ffffed103ed04732 R11: ffff8881f6823993 R12: ffff8881ca070000 R13: ffff8881daac00c0 R14: ffffea0007281c00 R15: ffff8881daacfd38 cow_user_page mm/memory.c:2364 [inline] wp_page_copy+0x1d7/0x14b0 mm/memory.c:2599 do_wp_page+0x1bd/0xcc0 mm/memory.c:2892 handle_pte_fault mm/memory.c:4150 [inline] __handle_mm_fault+0x15b6/0x2b10 mm/memory.c:4258 handle_mm_fault+0x334/0x840 mm/memory.c:4295 __do_page_fault+0x466/0xb20 arch/x86/mm/fault.c:1412 do_page_fault+0x64/0x3b0 arch/x86/mm/fault.c:1487 page_fault+0x1e/0x30 arch/x86/entry/entry_64.S:1205 RIP: 0033:0x5557088fe878 Code: 48 89 f3 0f 84 09 01 00 00 48 83 7e 30 00 0f 85 1e 01 00 00 48 83 7f 30 00 0f 85 33 01 00 00 48 89 77 30 c7 47 28 01 00 00 00 <48> 89 7e 30 c7 46 38 02 00 00 00 48 8b 07 48 8b 68 08 e8 81 51 02 RSP: 002b:00007ffc73f04700 EFLAGS: 00010246 RAX: 0000000000000000 RBX: 000055570a93b530 RCX: 0000000000000000 RDX: 0000000000000010 RSI: 000055570a93b530 RDI: 000055570a92e280 RBP: 0000000000001b35 R08: 000055570a947c07 R09: 00000000000000f0 R10: 0000000000000000 R11: 000055570a947b10 R12: 000055570a92e280 R13: 000055570a92c010 R14: 000055570a93ac00 R15: 000055570a92c010 irq event stamp: 1412972 hardirqs last enabled at (1412971): [] rmqueue_pcplist mm/page_alloc.c:2997 [inline] hardirqs last enabled at (1412971): [] rmqueue mm/page_alloc.c:3014 [inline] hardirqs last enabled at (1412971): [] get_page_from_freelist+0x241d/0x4470 mm/page_alloc.c:3373 hardirqs last disabled at (1412972): [] trace_hardirqs_off_thunk+0x1a/0x1c softirqs last enabled at (1412316): [] spin_unlock_bh include/linux/spinlock.h:374 [inline] softirqs last enabled at (1412316): [] release_sock+0x11f/0x180 net/core/sock.c:2892 softirqs last disabled at (1412314): [] spin_lock_bh include/linux/spinlock.h:334 [inline] softirqs last disabled at (1412314): [] release_sock+0x1b/0x180 net/core/sock.c:2879 ---[ end trace e64ed1d27763cf3f ]--- list_add double add: new=ffff8881d0150360, prev=ffff8881d0150360, next=ffffe8ffffc11ce0. ------------[ cut here ]------------ kernel BUG at lib/list_debug.c:31! invalid opcode: 0000 [#1] PREEMPT SMP KASAN CPU: 0 PID: 3050 Comm: kworker/0:2 Tainted: G W 4.19.188-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Workqueue: events_power_efficient gc_worker RIP: 0010:__list_add_valid+0xaa/0xb0 lib/list_debug.c:29 Code: e8 eb a9 48 89 f7 48 89 75 e8 e8 71 f4 9e fe 48 8b 75 e8 eb bb 48 89 f2 48 89 d9 4c 89 e6 48 c7 c7 e0 60 1f 87 e8 3e b7 80 03 <0f> 0b 0f 1f 40 00 48 b8 00 00 00 00 00 fc ff df 55 48 89 e5 41 55 RSP: 0018:ffff8881f6807c70 EFLAGS: 00010082 RAX: 0000000000000058 RBX: ffffe8ffffc11ce0 RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffffffff871f5ea0 RDI: ffffffff89c876e0 RBP: ffff8881f6807c88 R08: ffffed103ed05079 R09: ffffed103ed05078 R10: ffffed103ed05078 R11: ffff8881f68283c7 R12: ffff8881d0150360 R13: ffff8881d0150360 R14: ffff8881d0150360 R15: ffffe8ffffc11ce8 FS: 0000000000000000(0000) GS:ffff8881f6800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ffc73f05438 CR3: 000000000806d005 CR4: 00000000001606f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 000000000011060a Call Trace: __list_add include/linux/list.h:60 [inline] list_add_tail include/linux/list.h:93 [inline] flexible_sched_in kernel/events/core.c:3323 [inline] flexible_sched_in+0x5c9/0x8b0 kernel/events/core.c:3311 visit_groups_merge+0x251/0x5a0 kernel/events/core.c:3270 ctx_flexible_sched_in kernel/events/core.c:3356 [inline] ctx_sched_in+0x2bb/0x9c0 kernel/events/core.c:3401 cpu_ctx_sched_in kernel/events/core.c:3410 [inline] perf_event_sched_in+0x77/0x80 kernel/events/core.c:2430 ctx_resched+0x79/0xe0 kernel/events/core.c:2482 __perf_install_in_context+0x40d/0x880 kernel/events/core.c:2540 remote_function kernel/events/core.c:87 [inline] remote_function+0xff/0x180 kernel/events/core.c:67 flush_smp_call_function_queue+0x10e/0x3d0 kernel/smp.c:243 generic_smp_call_function_single_interrupt+0xe/0x20 kernel/smp.c:192 smp_call_function_single_interrupt+0xa0/0x440 arch/x86/kernel/smp.c:304 call_function_single_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:916 RIP: 0010:arch_local_irq_restore arch/x86/include/asm/paravirt.h:789 [inline] RIP: 0010:seqcount_lockdep_reader_access include/linux/seqlock.h:83 [inline] RIP: 0010:read_seqcount_begin include/linux/seqlock.h:164 [inline] RIP: 0010:nf_conntrack_get_ht include/net/netfilter/nf_conntrack.h:302 [inline] RIP: 0010:gc_worker+0x788/0xbb0 net/netfilter/nf_conntrack_core.c:1220 Code: c7 08 01 12 88 48 89 f8 48 c1 e8 03 42 80 3c 28 00 0f 85 c7 03 00 00 48 83 3d 7b de df 02 00 0f 84 1d 01 00 00 48 89 df 57 9d <0f> 1f 44 00 00 e9 db fa ff ff e8 79 19 1f fc 84 c0 0f 85 fb f9 ff RSP: 0018:ffff8881e6527c78 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff04 RAX: 1ffffffff1024021 RBX: 0000000000000286 RCX: 1ffff1103cca79f2 RDX: 0000000000000000 RSI: ffff8881e653cf98 RDI: 0000000000000286 RBP: ffff8881e6527d58 R08: ffff8881e653cf90 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: fffffbfff1024022 R13: dffffc0000000000 R14: 000000000000465b R15: 000000000000465b process_one_work+0x830/0x1670 kernel/workqueue.c:2152 worker_thread+0x85/0xb60 kernel/workqueue.c:2295 kthread+0x347/0x410 kernel/kthread.c:259 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415 Modules linked in: ---[ end trace e64ed1d27763cf40 ]--- RIP: 0010:__list_add_valid+0xaa/0xb0 lib/list_debug.c:29 Code: e8 eb a9 48 89 f7 48 89 75 e8 e8 71 f4 9e fe 48 8b 75 e8 eb bb 48 89 f2 48 89 d9 4c 89 e6 48 c7 c7 e0 60 1f 87 e8 3e b7 80 03 <0f> 0b 0f 1f 40 00 48 b8 00 00 00 00 00 fc ff df 55 48 89 e5 41 55 RSP: 0018:ffff8881f6807c70 EFLAGS: 00010082 RAX: 0000000000000058 RBX: ffffe8ffffc11ce0 RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffffffff871f5ea0 RDI: ffffffff89c876e0 RBP: ffff8881f6807c88 R08: ffffed103ed05079 R09: ffffed103ed05078 R10: ffffed103ed05078 R11: ffff8881f68283c7 R12: ffff8881d0150360 R13: ffff8881d0150360 R14: ffff8881d0150360 R15: ffffe8ffffc11ce8 FS: 0000000000000000(0000) GS:ffff8881f6800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ffc73f05438 CR3: 000000000806d005 CR4: 00000000001606f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 000000000011060a