RBP: 00007fa6ef11f1d0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 R13: 00007fffe01c704f R14: 00007fa6ef11f300 R15: 0000000000022000 ================================================================== BUG: KASAN: use-after-free in get_kprobe kernel/kprobes.c:372 [inline] BUG: KASAN: use-after-free in get_optimized_kprobe+0x184/0x1c0 kernel/kprobes.c:489 Read of size 8 at addr ffff88800dd27028 by task syz-executor.4/5583 CPU: 0 PID: 5583 Comm: syz-executor.4 Not tainted 5.10.96 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x107/0x163 lib/dump_stack.c:118 print_address_description.constprop.0+0x1c/0x210 mm/kasan/report.c:385 __kasan_report mm/kasan/report.c:545 [inline] kasan_report.cold+0x37/0x7c mm/kasan/report.c:562 get_kprobe kernel/kprobes.c:372 [inline] get_optimized_kprobe+0x184/0x1c0 kernel/kprobes.c:489 __disarm_kprobe+0x80/0x120 kernel/kprobes.c:978 disarm_kprobe kernel/kprobes.c:1154 [inline] __disable_kprobe+0x235/0x350 kernel/kprobes.c:1793 disable_kprobe+0x25/0x70 kernel/kprobes.c:2299 __disable_trace_kprobe+0xef/0x180 kernel/trace/trace_kprobe.c:344 disable_trace_kprobe+0x231/0x2d0 kernel/trace/trace_kprobe.c:422 kprobe_register+0x61/0xb0 kernel/trace/trace_kprobe.c:1713 perf_trace_event_unreg.isra.0+0xb0/0x210 kernel/trace/trace_event_perf.c:162 perf_kprobe_destroy+0xc0/0x130 kernel/trace/trace_event_perf.c:294 _free_event+0x159/0xc70 kernel/events/core.c:4951 put_event kernel/events/core.c:5045 [inline] perf_event_release_kernel+0x899/0xc20 kernel/events/core.c:5160 perf_release+0x33/0x40 kernel/events/core.c:5170 __fput+0x285/0x980 fs/file_table.c:281 task_work_run+0xe2/0x1a0 kernel/task_work.c:151 tracehook_notify_resume include/linux/tracehook.h:188 [inline] exit_to_user_mode_loop kernel/entry/common.c:164 [inline] exit_to_user_mode_prepare+0x155/0x160 kernel/entry/common.c:191 syscall_exit_to_user_mode+0x38/0x230 kernel/entry/common.c:266 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x7fa59a49572b Code: 0f 05 48 3d 00 f0 ff ff 77 45 c3 0f 1f 40 00 48 83 ec 18 89 7c 24 0c e8 63 fc ff ff 8b 7c 24 0c 41 89 c0 b8 03 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 35 44 89 c7 89 44 24 0c e8 a1 fc ff ff 8b 44 RSP: 002b:00007ffd6d5ef840 EFLAGS: 00000293 ORIG_RAX: 0000000000000003 RAX: 0000000000000000 RBX: 0000000000000005 RCX: 00007fa59a49572b RDX: 00007fa59a5fc078 RSI: 0000000000000081 RDI: 0000000000000004 RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000293 R12: 00007fa59a5fc078 R13: 00007ffd6d5ef960 R14: 00007fa59a5f5f60 R15: 0000000000088dad Allocated by task 5591: kasan_save_stack+0x1b/0x40 mm/kasan/common.c:48 kasan_set_track mm/kasan/common.c:56 [inline] __kasan_kmalloc.constprop.0+0xc2/0xd0 mm/kasan/common.c:461 kmalloc include/linux/slab.h:552 [inline] kzalloc include/linux/slab.h:664 [inline] alloc_aggr_kprobe+0x41/0x190 kernel/kprobes.c:822 try_to_optimize_kprobe kernel/kprobes.c:853 [inline] register_kprobe kernel/kprobes.c:1740 [inline] register_kprobe+0xb78/0x1330 kernel/kprobes.c:1682 __register_trace_kprobe kernel/trace/trace_kprobe.c:514 [inline] __register_trace_kprobe+0x262/0x2d0 kernel/trace/trace_kprobe.c:482 create_local_trace_kprobe+0x1e6/0x3b0 kernel/trace/trace_kprobe.c:1840 perf_kprobe_init+0x18c/0x280 kernel/trace/trace_event_perf.c:272 perf_kprobe_event_init+0xf8/0x1c0 kernel/events/core.c:9655 perf_try_init_event+0x130/0x570 kernel/events/core.c:11033 perf_init_event kernel/events/core.c:11085 [inline] perf_event_alloc.part.0+0xd96/0x2b30 kernel/events/core.c:11363 perf_event_alloc kernel/events/core.c:11742 [inline] __do_sys_perf_event_open+0x57c/0x2d00 kernel/events/core.c:11840 do_syscall_64+0x33/0x40 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x44/0xa9 Freed by task 4273: kasan_save_stack+0x1b/0x40 mm/kasan/common.c:48 kasan_set_track+0x1c/0x30 mm/kasan/common.c:56 kasan_set_free_info+0x1b/0x30 mm/kasan/generic.c:355 __kasan_slab_free+0x110/0x150 mm/kasan/common.c:422 slab_free_hook mm/slub.c:1542 [inline] slab_free_freelist_hook+0xa9/0x180 mm/slub.c:1576 slab_free mm/slub.c:3149 [inline] kfree+0xd7/0x380 mm/slub.c:4125 free_aggr_kprobe kernel/kprobes.c:434 [inline] do_free_cleaned_kprobes kernel/kprobes.c:586 [inline] kprobe_optimizer+0x56f/0x7e0 kernel/kprobes.c:624 process_one_work+0x9a9/0x1590 kernel/workqueue.c:2279 worker_thread+0x61d/0x1310 kernel/workqueue.c:2425 kthread+0x38f/0x470 kernel/kthread.c:313 ret_from_fork+0x22/0x30 arch/x86/entry/entry_64.S:296 Last call_rcu(): kasan_save_stack+0x1b/0x40 mm/kasan/common.c:48 kasan_record_aux_stack+0x9e/0xb0 mm/kasan/generic.c:346 __call_rcu kernel/rcu/tree.c:2963 [inline] call_rcu+0x8a/0xa00 kernel/rcu/tree.c:3037 neigh_parms_release net/core/neighbour.c:1675 [inline] neigh_parms_release+0x178/0x1d0 net/core/neighbour.c:1665 addrconf_ifdown.isra.0+0xf43/0x14e0 net/ipv6/addrconf.c:3863 addrconf_notify+0x159/0x2350 net/ipv6/addrconf.c:3644 notifier_call_chain kernel/notifier.c:83 [inline] raw_notifier_call_chain+0xb3/0x110 kernel/notifier.c:410 call_netdevice_notifiers_info+0xb5/0x130 net/core/dev.c:2047 call_netdevice_notifiers_extack net/core/dev.c:2059 [inline] call_netdevice_notifiers net/core/dev.c:2073 [inline] rollback_registered_many+0x83d/0x1270 net/core/dev.c:9558 unregister_netdevice_many.part.0+0x18/0x220 net/core/dev.c:10767 unregister_netdevice_many net/core/dev.c:10766 [inline] default_device_exit_batch+0x321/0x3e0 net/core/dev.c:11250 ops_exit_list+0x12b/0x180 net/core/net_namespace.c:192 cleanup_net+0x484/0x8e0 net/core/net_namespace.c:608 process_one_work+0x9a9/0x1590 kernel/workqueue.c:2279 worker_thread+0x61d/0x1310 kernel/workqueue.c:2425 kthread+0x38f/0x470 kernel/kthread.c:313 ret_from_fork+0x22/0x30 arch/x86/entry/entry_64.S:296 Second to last call_rcu(): kasan_save_stack+0x1b/0x40 mm/kasan/common.c:48 kasan_record_aux_stack+0x9e/0xb0 mm/kasan/generic.c:346 __call_rcu kernel/rcu/tree.c:2963 [inline] call_rcu+0x8a/0xa00 kernel/rcu/tree.c:3037 neigh_parms_release net/core/neighbour.c:1675 [inline] neigh_parms_release+0x178/0x1d0 net/core/neighbour.c:1665 inetdev_destroy net/ipv4/devinet.c:325 [inline] inetdev_event+0x1007/0x1550 net/ipv4/devinet.c:1599 notifier_call_chain kernel/notifier.c:83 [inline] raw_notifier_call_chain+0xb3/0x110 kernel/notifier.c:410 call_netdevice_notifiers_info+0xb5/0x130 net/core/dev.c:2047 call_netdevice_notifiers_extack net/core/dev.c:2059 [inline] call_netdevice_notifiers net/core/dev.c:2073 [inline] rollback_registered_many+0x83d/0x1270 net/core/dev.c:9558 unregister_netdevice_many.part.0+0x18/0x220 net/core/dev.c:10767 unregister_netdevice_many net/core/dev.c:10766 [inline] default_device_exit_batch+0x321/0x3e0 net/core/dev.c:11250 ops_exit_list+0x12b/0x180 net/core/net_namespace.c:192 cleanup_net+0x484/0x8e0 net/core/net_namespace.c:608 process_one_work+0x9a9/0x1590 kernel/workqueue.c:2279 worker_thread+0x61d/0x1310 kernel/workqueue.c:2425 kthread+0x38f/0x470 kernel/kthread.c:313 ret_from_fork+0x22/0x30 arch/x86/entry/entry_64.S:296 The buggy address belongs to the object at ffff88800dd27000 which belongs to the cache kmalloc-192 of size 192 The buggy address is located 40 bytes inside of 192-byte region [ffff88800dd27000, ffff88800dd270c0) The buggy address belongs to the page: page:0000000035161cac refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0xdd27 flags: 0x100000000000200(slab) raw: 0100000000000200 ffffea000079c340 0000000200000002 ffff888007c41500 raw: 0000000000000000 0000000000100010 00000001ffffffff 0000000000000000 page dumped because: kasan: bad access detected Memory state around the buggy address: ffff88800dd26f00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ffff88800dd26f80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 >ffff88800dd27000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ^ ffff88800dd27080: fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc ffff88800dd27100: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ================================================================== EXT4-fs (loop5): mounted filesystem without journal. Opts: ,errors=continue EXT4-fs (loop0): mounting ext2 file system using the ext4 subsystem EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 CPU: 0 PID: 5624 Comm: syz-executor.1 Tainted: G B 5.10.96 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x107/0x163 lib/dump_stack.c:118 fail_dump lib/fault-inject.c:52 [inline] should_fail.cold+0x5/0xa lib/fault-inject.c:146 should_failslab+0x5/0x10 mm/slab_common.c:1193 slab_pre_alloc_hook mm/slab.h:515 [inline] slab_alloc_node mm/slub.c:2821 [inline] slab_alloc mm/slub.c:2904 [inline] kmem_cache_alloc+0x5b/0x350 mm/slub.c:2909 anon_vma_alloc mm/rmap.c:89 [inline] __anon_vma_prepare+0x281/0x4f0 mm/rmap.c:197 anon_vma_prepare include/linux/rmap.h:153 [inline] do_anonymous_page mm/memory.c:3581 [inline] handle_pte_fault mm/memory.c:4433 [inline] __handle_mm_fault mm/memory.c:4570 [inline] handle_mm_fault+0x2b62/0x3540 mm/memory.c:4668 do_user_addr_fault+0x6d6/0xc30 arch/x86/mm/fault.c:1379 handle_page_fault arch/x86/mm/fault.c:1436 [inline] exc_page_fault+0xa2/0x1a0 arch/x86/mm/fault.c:1492 asm_exc_page_fault+0x1e/0x30 arch/x86/include/asm/idtentry.h:571 RIP: 0010:copy_user_generic_string+0x2c/0x40 arch/x86/lib/copy_user_64.S:169 Code: cb 83 fa 08 72 27 89 f9 83 e1 07 74 15 83 e9 08 f7 d9 29 ca 8a 06 88 07 48 ff c6 48 ff c7 ff c9 75 f2 89 d1 c1 e9 03 83 e2 07 48 a5 89 d1 f3 a4 31 c0 0f 01 ca c3 0f 1f 80 00 00 00 00 0f 01 RSP: 0018:ffff88804648fdc0 EFLAGS: 00050246 RAX: 0000000000000001 RBX: 0000000000000090 RCX: 0000000000000012 RDX: 0000000000000000 RSI: ffff88804648fe30 RDI: 0000000020000000 RBP: 0000000020000000 R08: 0000000000000000 R09: ffff88804648febf R10: ffffed1008c91fd7 R11: 0000000000000001 R12: 0000000020000090 R13: ffff88804648fe30 R14: 00007ffffffff000 R15: 0000000000000000 copy_user_generic arch/x86/include/asm/uaccess_64.h:37 [inline] raw_copy_to_user arch/x86/include/asm/uaccess_64.h:58 [inline] _copy_to_user lib/usercopy.c:33 [inline] _copy_to_user+0x13d/0x180 lib/usercopy.c:26 copy_to_user include/linux/uaccess.h:200 [inline] __do_sys_getrusage+0xd1/0x140 kernel/sys.c:1805 do_syscall_64+0x33/0x40 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x7fa6f1ba9b19 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:00007fa6ef11f188 EFLAGS: 00000246 ORIG_RAX: 0000000000000062 RAX: ffffffffffffffda RBX: 00007fa6f1cbcf60 RCX: 00007fa6f1ba9b19 RDX: 0000000000000000 RSI: 0000000020000000 RDI: ffffffffffffffff RBP: 00007fa6ef11f1d0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002 R13: 00007fffe01c704f R14: 00007fa6ef11f300 R15: 0000000000022000 ------------[ cut here ]------------ WARNING: CPU: 1 PID: 5632 at kernel/kprobes.c:764 reuse_unused_kprobe kernel/kprobes.c:764 [inline] WARNING: CPU: 1 PID: 5632 at kernel/kprobes.c:764 register_aggr_kprobe kernel/kprobes.c:1447 [inline] WARNING: CPU: 1 PID: 5632 at kernel/kprobes.c:764 register_kprobe kernel/kprobes.c:1713 [inline] WARNING: CPU: 1 PID: 5632 at kernel/kprobes.c:764 register_kprobe+0x1008/0x1330 kernel/kprobes.c:1682 Modules linked in: CPU: 1 PID: 5632 Comm: syz-executor.4 Tainted: G B 5.10.96 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014 RIP: 0010:reuse_unused_kprobe kernel/kprobes.c:764 [inline] RIP: 0010:register_aggr_kprobe kernel/kprobes.c:1447 [inline] RIP: 0010:register_kprobe kernel/kprobes.c:1713 [inline] RIP: 0010:register_kprobe+0x1008/0x1330 kernel/kprobes.c:1682 Code: 4d 89 6c 24 08 e8 58 64 ff ff 41 89 dc 48 b8 22 01 00 00 00 00 ad de 48 89 45 08 e8 f2 e1 ed ff e9 5b f9 ff ff e8 38 64 ff ff <0f> 0b e9 9d fc ff ff 4c 89 ff e8 39 af 2a 00 e9 99 f5 ff ff e8 2f RSP: 0018:ffff888047437bd0 EFLAGS: 00010212 RAX: 000000000000b411 RBX: ffff88800dd27078 RCX: ffffc900049fc000 RDX: 0000000000040000 RSI: ffffffff81403da8 RDI: ffff88800dd27078 RBP: ffff88800f4bd418 R08: 0000000000000000 R09: ffffffff84ce8ec7 R10: 0000000000000000 R11: 0000000000000001 R12: 0000000000000000 R13: ffff88800f4bd428 R14: ffff88800dd27070 R15: ffff88800dd27000 FS: 00007fa597a58700(0000) GS:ffff88806cf00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fa59a5f6018 CR3: 0000000042600000 CR4: 0000000000350ee0 Call Trace: __register_trace_kprobe kernel/trace/trace_kprobe.c:514 [inline] __register_trace_kprobe+0x262/0x2d0 kernel/trace/trace_kprobe.c:482 create_local_trace_kprobe+0x1e6/0x3b0 kernel/trace/trace_kprobe.c:1840 perf_kprobe_init+0x18c/0x280 kernel/trace/trace_event_perf.c:272 perf_kprobe_event_init+0xf8/0x1c0 kernel/events/core.c:9655 perf_try_init_event+0x130/0x570 kernel/events/core.c:11033 perf_init_event kernel/events/core.c:11085 [inline] perf_event_alloc.part.0+0xd96/0x2b30 kernel/events/core.c:11363 perf_event_alloc kernel/events/core.c:11742 [inline] __do_sys_perf_event_open+0x57c/0x2d00 kernel/events/core.c:11840 do_syscall_64+0x33/0x40 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x7fa59a4e2b19 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:00007fa597a58188 EFLAGS: 00000246 ORIG_RAX: 000000000000012a RAX: ffffffffffffffda RBX: 00007fa59a5f5f60 RCX: 00007fa59a4e2b19 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000020001d80 RBP: 00007fa59a53cf6d R08: 0000000000000000 R09: 0000000000000000 R10: ffffffffffffffff R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffd6d5ef7df R14: 00007fa597a58300 R15: 0000000000022000 irq event stamp: 0 hardirqs last enabled at (0): [<0000000000000000>] 0x0 hardirqs last disabled at (0): [] copy_process+0x159f/0x66c0 kernel/fork.c:2050 softirqs last enabled at (0): [] copy_process+0x15e0/0x66c0 kernel/fork.c:2054 softirqs last disabled at (0): [<0000000000000000>] 0x0 ---[ end trace 8abb620334ac705f ]--- EXT4-fs (loop0): mounting ext2 file system using the ext4 subsystem EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue general protection fault, probably for non-canonical address 0xf713fc42e0000216: 0000 [#1] SMP KASAN NOPTI KASAN: maybe wild-memory-access in range [0xb8a00217000010b0-0xb8a00217000010b7] CPU: 0 PID: 5631 Comm: syz-executor.5 Tainted: G B W 5.10.96 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014 RIP: 0010:__hlist_del include/linux/list.h:838 [inline] RIP: 0010:hlist_del_rcu include/linux/rculist.h:514 [inline] RIP: 0010:__unregister_kprobe_top+0x3a3/0x550 kernel/kprobes.c:1859 Code: 00 fc ff df 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 ab 01 00 00 48 b8 00 00 00 00 00 fc ff df 4c 8b 65 08 4c 89 e2 48 c1 ea 03 <80> 3c 02 00 0f 85 44 01 00 00 49 89 1c 24 48 85 db 74 28 e8 25 9b RSP: 0018:ffff888043857ca8 EFLAGS: 00010212 RAX: dffffc0000000000 RBX: ffff88800dbdfa00 RCX: ffffffff8140083e RDX: 17140042e0000216 RSI: 0000000000000008 RDI: ffff88800dd27008 RBP: ffff88800dd27000 R08: 0000000000000000 R09: ffffffff84e33b47 R10: 0000000000000000 R11: 0000000000000001 R12: b8a00217000010b1 R13: ffffffff813fb350 R14: ffff88800dd27070 R15: 0000000000000001 FS: 00005555555b8400(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fe5caed6018 CR3: 0000000043b20000 CR4: 0000000000350ef0 Call Trace: unregister_kprobes kernel/kprobes.c:1911 [inline] unregister_kprobes kernel/kprobes.c:1903 [inline] unregister_kprobe+0x26/0xc0 kernel/kprobes.c:1899 __unregister_trace_kprobe+0x1a2/0x210 kernel/trace/trace_kprobe.c:526 destroy_local_trace_kprobe+0xc8/0x170 kernel/trace/trace_kprobe.c:1863 _free_event+0x159/0xc70 kernel/events/core.c:4951 put_event kernel/events/core.c:5045 [inline] perf_event_release_kernel+0x899/0xc20 kernel/events/core.c:5160 perf_release+0x33/0x40 kernel/events/core.c:5170 __fput+0x285/0x980 fs/file_table.c:281 task_work_run+0xe2/0x1a0 kernel/task_work.c:151 tracehook_notify_resume include/linux/tracehook.h:188 [inline] exit_to_user_mode_loop kernel/entry/common.c:164 [inline] exit_to_user_mode_prepare+0x155/0x160 kernel/entry/common.c:191 syscall_exit_to_user_mode+0x38/0x230 kernel/entry/common.c:266 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x7f79bb36a72b Code: 0f 05 48 3d 00 f0 ff ff 77 45 c3 0f 1f 40 00 48 83 ec 18 89 7c 24 0c e8 63 fc ff ff 8b 7c 24 0c 41 89 c0 b8 03 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 35 44 89 c7 89 44 24 0c e8 a1 fc ff ff 8b 44 RSP: 002b:00007fff3c0f6e30 EFLAGS: 00000293 ORIG_RAX: 0000000000000003 RAX: 0000000000000000 RBX: 0000000000000004 RCX: 00007f79bb36a72b RDX: 00007f79bb4d1078 RSI: ffffffff83dd21fd RDI: 0000000000000003 RBP: 0000000000000001 R08: 0000000000000000 R09: 0000001b2d227420 R10: 0000000000001140 R11: 0000000000000293 R12: 00000000000890ef R13: 00000000000003e8 R14: 00007f79bb4caf60 R15: 0000000000089098 Modules linked in: ---[ end trace 8abb620334ac7060 ]--- RIP: 0010:__hlist_del include/linux/list.h:838 [inline] RIP: 0010:hlist_del_rcu include/linux/rculist.h:514 [inline] RIP: 0010:__unregister_kprobe_top+0x3a3/0x550 kernel/kprobes.c:1859 Code: 00 fc ff df 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 ab 01 00 00 48 b8 00 00 00 00 00 fc ff df 4c 8b 65 08 4c 89 e2 48 c1 ea 03 <80> 3c 02 00 0f 85 44 01 00 00 49 89 1c 24 48 85 db 74 28 e8 25 9b RSP: 0018:ffff888043857ca8 EFLAGS: 00010212 RAX: dffffc0000000000 RBX: ffff88800dbdfa00 RCX: ffffffff8140083e RDX: 17140042e0000216 RSI: 0000000000000008 RDI: ffff88800dd27008 RBP: ffff88800dd27000 R08: 0000000000000000 R09: ffffffff84e33b47 R10: 0000000000000000 R11: 0000000000000001 R12: b8a00217000010b1 R13: ffffffff813fb350 R14: ffff88800dd27070 R15: 0000000000000001 FS: 00005555555b8400(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fe5caed6018 CR3: 0000000043b20000 CR4: 0000000000350ef0 ---------------- Code disassembly (best guess): 0: cb lret 1: 83 fa 08 cmp $0x8,%edx 4: 72 27 jb 0x2d 6: 89 f9 mov %edi,%ecx 8: 83 e1 07 and $0x7,%ecx b: 74 15 je 0x22 d: 83 e9 08 sub $0x8,%ecx 10: f7 d9 neg %ecx 12: 29 ca sub %ecx,%edx 14: 8a 06 mov (%rsi),%al 16: 88 07 mov %al,(%rdi) 18: 48 ff c6 inc %rsi 1b: 48 ff c7 inc %rdi 1e: ff c9 dec %ecx 20: 75 f2 jne 0x14 22: 89 d1 mov %edx,%ecx 24: c1 e9 03 shr $0x3,%ecx 27: 83 e2 07 and $0x7,%edx * 2a: f3 48 a5 rep movsq %ds:(%rsi),%es:(%rdi) <-- trapping instruction 2d: 89 d1 mov %edx,%ecx 2f: f3 a4 rep movsb %ds:(%rsi),%es:(%rdi) 31: 31 c0 xor %eax,%eax 33: 0f 01 ca clac 36: c3 retq 37: 0f 1f 80 00 00 00 00 nopl 0x0(%rax) 3e: 0f .byte 0xf 3f: 01 .byte 0x1