RBP: 00007fa1e04331d0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002 R13: 00007fff24e0554f R14: 00007fa1e0433300 R15: 0000000000022000 ====================================================== WARNING: possible circular locking dependency detected 5.10.211 #1 Not tainted ------------------------------------------------------ syz-executor.2/26703 is trying to acquire lock: ffff888008e30ae8 ((work_completion)(&hdev->tx_work)){+.+.}-{0:0}, at: __flush_work+0xdd/0xa90 kernel/workqueue.c:3050 but task is already holding lock: FAULT_INJECTION: forcing a failure. name fail_usercopy, interval 1, probability 0, space 0, times 0 ffff888008e30f40 (&hdev->req_lock){+.+.}-{3:3}, at: hci_dev_do_close+0xef/0x1240 net/bluetooth/hci_core.c:1734 CPU: 1 PID: 26711 Comm: syz-executor.3 Not tainted 5.10.211 #1 which lock already depends on the new lock. the existing dependency chain (in reverse order) is: Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 -> #3 ( Call Trace: &hdev->req_lock){+.+.}-{3:3} __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x107/0x167 lib/dump_stack.c:118 : __mutex_lock_common kernel/locking/mutex.c:968 [inline] __mutex_lock+0x13d/0x10b0 kernel/locking/mutex.c:1109 fail_dump lib/fault-inject.c:52 [inline] should_fail.cold+0x5/0xa lib/fault-inject.c:146 hci_dev_do_close+0xef/0x1240 net/bluetooth/hci_core.c:1734 hci_rfkill_set_block+0x166/0x1a0 net/bluetooth/hci_core.c:2223 _copy_from_user+0x2e/0x1b0 lib/usercopy.c:15 rfkill_set_block+0x1fd/0x540 net/rfkill/core.c:341 rfkill_fop_write+0x253/0x4b0 net/rfkill/core.c:1240 copy_from_user include/linux/uaccess.h:192 [inline] __copy_msghdr_from_user+0x91/0x4b0 net/socket.c:2260 vfs_write+0x29a/0xa70 fs/read_write.c:603 ksys_write+0x1f6/0x260 fs/read_write.c:658 do_syscall_64+0x33/0x40 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x62/0xc7 -> #2 ( rfkill_global_mutex){+.+.}-{3:3} copy_msghdr_from_user net/socket.c:2311 [inline] sendmsg_copy_msghdr+0xa1/0x160 net/socket.c:2409 : __mutex_lock_common kernel/locking/mutex.c:968 [inline] __mutex_lock+0x13d/0x10b0 kernel/locking/mutex.c:1109 rfkill_register+0x36/0xa10 net/rfkill/core.c:1016 hci_register_dev+0x42e/0xc00 net/bluetooth/hci_core.c:3773 __vhci_create_device+0x2c8/0x5c0 drivers/bluetooth/hci_vhci.c:129 vhci_create_device drivers/bluetooth/hci_vhci.c:153 [inline] vhci_open_timeout+0x38/0x50 drivers/bluetooth/hci_vhci.c:310 process_one_work+0x9a9/0x14b0 kernel/workqueue.c:2282 worker_thread+0x61d/0x1310 kernel/workqueue.c:2428 ___sys_sendmsg+0xc6/0x170 net/socket.c:2428 kthread+0x38f/0x470 kernel/kthread.c:313 ret_from_fork+0x22/0x30 arch/x86/entry/entry_64.S:299 -> #1 ( &data->open_mutex){+.+.}-{3:3} : __mutex_lock_common kernel/locking/mutex.c:968 [inline] __mutex_lock+0x13d/0x10b0 kernel/locking/mutex.c:1109 vhci_send_frame+0x63/0xa0 drivers/bluetooth/hci_vhci.c:71 hci_send_frame+0x1b9/0x320 net/bluetooth/hci_core.c:4060 hci_sched_acl_pkt net/bluetooth/hci_core.c:4585 [inline] hci_sched_acl net/bluetooth/hci_core.c:4670 [inline] hci_tx_work+0x10af/0x1660 net/bluetooth/hci_core.c:4741 process_one_work+0x9a9/0x14b0 kernel/workqueue.c:2282 worker_thread+0x61d/0x1310 kernel/workqueue.c:2428 kthread+0x38f/0x470 kernel/kthread.c:313 ret_from_fork+0x22/0x30 arch/x86/entry/entry_64.S:299 -> #0 ((work_completion)(&hdev->tx_work) __sys_sendmmsg+0x195/0x470 net/socket.c:2518 ){+.+.}-{0:0}: check_prev_add kernel/locking/lockdep.c:2988 [inline] check_prevs_add kernel/locking/lockdep.c:3113 [inline] validate_chain kernel/locking/lockdep.c:3729 [inline] __lock_acquire+0x29e7/0x5b00 kernel/locking/lockdep.c:4955 lock_acquire kernel/locking/lockdep.c:5566 [inline] lock_acquire+0x197/0x470 kernel/locking/lockdep.c:5531 __flush_work+0x105/0xa90 kernel/workqueue.c:3053 hci_dev_do_close+0x131/0x1240 net/bluetooth/hci_core.c:1745 hci_rfkill_set_block+0x166/0x1a0 net/bluetooth/hci_core.c:2223 rfkill_set_block+0x1fd/0x540 net/rfkill/core.c:341 rfkill_fop_write+0x253/0x4b0 net/rfkill/core.c:1240 vfs_write+0x29a/0xa70 fs/read_write.c:603 ksys_write+0x1f6/0x260 fs/read_write.c:658 do_syscall_64+0x33/0x40 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x62/0xc7 other info that might help us debug this: Chain exists of: (work_completion)(&hdev->tx_work) --> rfkill_global_mutex __do_sys_sendmmsg net/socket.c:2547 [inline] __se_sys_sendmmsg net/socket.c:2544 [inline] __x64_sys_sendmmsg+0x99/0x100 net/socket.c:2544 --> &hdev->req_lock Possible unsafe locking scenario: do_syscall_64+0x33/0x40 arch/x86/entry/common.c:46 CPU0 CPU1 ---- ---- entry_SYSCALL_64_after_hwframe+0x62/0xc7 lock(&hdev->req_lock RIP: 0033:0x7f934106bb19 ); lock( 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 rfkill_global_mutex); RSP: 002b:00007f933e5e1188 EFLAGS: 00000246 lock(&hdev->req_lock ORIG_RAX: 0000000000000133 ); lock( RAX: ffffffffffffffda RBX: 00007f934117ef60 RCX: 00007f934106bb19 (work_completion)(&hdev->tx_work)); RDX: 000000007ffff000 RSI: 0000000020004d00 RDI: 0000000000000003 *** DEADLOCK *** 2 locks held by syz-executor.2/26703: RBP: 00007f933e5e11d0 R08: 0000000000000000 R09: 0000000000000000 #0: ffffffff8561a828 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002 R13: 00007fffd72bbe2f R14: 00007f933e5e1300 R15: 0000000000022000 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_fop_write+0xff/0x4b0 net/rfkill/core.c:1232 #1: ffff888008e30f40 (&hdev->req_lock){+.+.}-{3:3}, at: hci_dev_do_close+0xef/0x1240 net/bluetooth/hci_core.c:1734 FAULT_INJECTION: forcing a failure. name fail_usercopy, interval 1, probability 0, space 0, times 0 stack backtrace: CPU: 0 PID: 26703 Comm: syz-executor.2 Not tainted 5.10.211 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x107/0x167 lib/dump_stack.c:118 check_noncircular+0x263/0x2e0 kernel/locking/lockdep.c:2123 check_prev_add kernel/locking/lockdep.c:2988 [inline] check_prevs_add kernel/locking/lockdep.c:3113 [inline] validate_chain kernel/locking/lockdep.c:3729 [inline] __lock_acquire+0x29e7/0x5b00 kernel/locking/lockdep.c:4955 lock_acquire kernel/locking/lockdep.c:5566 [inline] lock_acquire+0x197/0x470 kernel/locking/lockdep.c:5531 __flush_work+0x105/0xa90 kernel/workqueue.c:3053 hci_dev_do_close+0x131/0x1240 net/bluetooth/hci_core.c:1745 hci_rfkill_set_block+0x166/0x1a0 net/bluetooth/hci_core.c:2223 rfkill_set_block+0x1fd/0x540 net/rfkill/core.c:341 rfkill_fop_write+0x253/0x4b0 net/rfkill/core.c:1240 vfs_write+0x29a/0xa70 fs/read_write.c:603 ksys_write+0x1f6/0x260 fs/read_write.c:658 do_syscall_64+0x33/0x40 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x62/0xc7 RIP: 0033:0x7f884d21eb19 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:00007f884a794188 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 00007f884d331f60 RCX: 00007f884d21eb19 RDX: 0000000000000008 RSI: 00000000200000c0 RDI: 0000000000000003 RBP: 00007f884d278f6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffddcc9707f R14: 00007f884a794300 R15: 0000000000022000 CPU: 1 PID: 26712 Comm: syz-executor.7 Not tainted 5.10.211 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x107/0x167 lib/dump_stack.c:118 fail_dump lib/fault-inject.c:52 [inline] should_fail.cold+0x5/0xa lib/fault-inject.c:146 _copy_from_user+0x2e/0x1b0 lib/usercopy.c:15 copy_from_user include/linux/uaccess.h:192 [inline] __copy_msghdr_from_user+0x91/0x4b0 net/socket.c:2260 copy_msghdr_from_user net/socket.c:2311 [inline] sendmsg_copy_msghdr+0xa1/0x160 net/socket.c:2409 ___sys_sendmsg+0xc6/0x170 net/socket.c:2428 __sys_sendmmsg+0x195/0x470 net/socket.c:2518 __do_sys_sendmmsg net/socket.c:2547 [inline] __se_sys_sendmmsg net/socket.c:2544 [inline] __x64_sys_sendmmsg+0x99/0x100 net/socket.c:2544 do_syscall_64+0x33/0x40 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x62/0xc7 RIP: 0033:0x7f4475f67b19 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:00007f44734dd188 EFLAGS: 00000246 ORIG_RAX: 0000000000000133 RAX: ffffffffffffffda RBX: 00007f447607af60 RCX: 00007f4475f67b19 RDX: 000000007ffff000 RSI: 0000000020004d00 RDI: 0000000000000003 RBP: 00007f44734dd1d0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002 FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 R13: 00007ffea941b45f R14: 00007f44734dd300 R15: 0000000000022000 CPU: 0 PID: 26719 Comm: syz-executor.4 Not tainted 5.10.211 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x107/0x167 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+0x5/0x20 mm/slab_common.c:1193 slab_pre_alloc_hook mm/slab.h:515 [inline] slab_alloc_node mm/slub.c:2821 [inline] kmem_cache_alloc_node+0x55/0x330 mm/slub.c:2932 __alloc_skb+0x6d/0x5b0 net/core/skbuff.c:198 skb_segment+0x9d8/0x3aa0 net/core/skbuff.c:3963 __udp_gso_segment+0x11c6/0x1830 net/ipv4/udp_offload.c:286 udp4_ufo_fragment+0x528/0x720 net/ipv4/udp_offload.c:387 inet_gso_segment+0x4fb/0x11a0 net/ipv4/af_inet.c:1382 skb_mac_gso_segment+0x273/0x570 net/core/dev.c:3349 __skb_gso_segment+0x32d/0x6d0 net/core/dev.c:3422 skb_gso_segment include/linux/netdevice.h:4768 [inline] validate_xmit_skb.constprop.0+0x4fe/0xda0 net/core/dev.c:3670 __dev_queue_xmit+0x87b/0x2710 net/core/dev.c:4174 neigh_connected_output+0x382/0x4d0 net/core/neighbour.c:1538 neigh_output include/net/neighbour.h:509 [inline] ip_finish_output2+0x6f1/0x21f0 net/ipv4/ip_output.c:237 __ip_finish_output.part.0+0x5f3/0xb50 net/ipv4/ip_output.c:315 __ip_finish_output net/ipv4/ip_output.c:303 [inline] ip_finish_output net/ipv4/ip_output.c:325 [inline] NF_HOOK_COND include/linux/netfilter.h:285 [inline] ip_output+0x2f7/0x600 net/ipv4/ip_output.c:439 dst_output include/net/dst.h:436 [inline] ip_local_out net/ipv4/ip_output.c:126 [inline] ip_send_skb+0xdd/0x260 net/ipv4/ip_output.c:1590 udp_send_skb+0x6da/0x11d0 net/ipv4/udp.c:965 udp_push_pending_frames net/ipv4/udp.c:993 [inline] udp_sendmsg+0x139a/0x2170 net/ipv4/udp.c:1284 udpv6_sendmsg+0x1bed/0x2af0 net/ipv6/udp.c:1374 inet6_sendmsg+0x105/0x140 net/ipv6/af_inet6.c:654 sock_sendmsg_nosec net/socket.c:651 [inline] __sock_sendmsg+0xf2/0x190 net/socket.c:663 ____sys_sendmsg+0x70d/0x870 net/socket.c:2378 ___sys_sendmsg+0xf3/0x170 net/socket.c:2432 __sys_sendmsg+0xe5/0x1b0 net/socket.c:2461 do_syscall_64+0x33/0x40 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x62/0xc7 RIP: 0033:0x7f570b8a2b19 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:00007f5708e18188 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007f570b9b5f60 RCX: 00007f570b8a2b19 RDX: 0000000000000000 RSI: 00000000200002c0 RDI: 0000000000000005 RBP: 00007f5708e181d0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 R13: 00007ffe4ad8036f R14: 00007f5708e18300 R15: 0000000000022000 FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 CPU: 0 PID: 26731 Comm: syz-executor.4 Not tainted 5.10.211 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x107/0x167 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+0x5/0x20 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/0x310 mm/slub.c:2909 mem_pool_alloc mm/kmemleak.c:423 [inline] create_object.isra.0+0x3a/0xa20 mm/kmemleak.c:578 kmemleak_alloc_recursive include/linux/kmemleak.h:43 [inline] slab_post_alloc_hook mm/slab.h:534 [inline] slab_alloc_node mm/slub.c:2896 [inline] kmem_cache_alloc_node+0x169/0x330 mm/slub.c:2932 __alloc_skb+0x6d/0x5b0 net/core/skbuff.c:198 skb_segment+0x9d8/0x3aa0 net/core/skbuff.c:3963 __udp_gso_segment+0x11c6/0x1830 net/ipv4/udp_offload.c:286 udp4_ufo_fragment+0x528/0x720 net/ipv4/udp_offload.c:387 inet_gso_segment+0x4fb/0x11a0 net/ipv4/af_inet.c:1382 skb_mac_gso_segment+0x273/0x570 net/core/dev.c:3349 __skb_gso_segment+0x32d/0x6d0 net/core/dev.c:3422 skb_gso_segment include/linux/netdevice.h:4768 [inline] validate_xmit_skb.constprop.0+0x4fe/0xda0 net/core/dev.c:3670 __dev_queue_xmit+0x87b/0x2710 net/core/dev.c:4174 neigh_connected_output+0x382/0x4d0 net/core/neighbour.c:1538 neigh_output include/net/neighbour.h:509 [inline] ip_finish_output2+0x6f1/0x21f0 net/ipv4/ip_output.c:237 __ip_finish_output.part.0+0x5f3/0xb50 net/ipv4/ip_output.c:315 __ip_finish_output net/ipv4/ip_output.c:303 [inline] ip_finish_output net/ipv4/ip_output.c:325 [inline] NF_HOOK_COND include/linux/netfilter.h:285 [inline] ip_output+0x2f7/0x600 net/ipv4/ip_output.c:439 dst_output include/net/dst.h:436 [inline] ip_local_out net/ipv4/ip_output.c:126 [inline] ip_send_skb+0xdd/0x260 net/ipv4/ip_output.c:1590 udp_send_skb+0x6da/0x11d0 net/ipv4/udp.c:965 udp_push_pending_frames net/ipv4/udp.c:993 [inline] udp_sendmsg+0x139a/0x2170 net/ipv4/udp.c:1284 udpv6_sendmsg+0x1bed/0x2af0 net/ipv6/udp.c:1374 inet6_sendmsg+0x105/0x140 net/ipv6/af_inet6.c:654 sock_sendmsg_nosec net/socket.c:651 [inline] __sock_sendmsg+0xf2/0x190 net/socket.c:663 ____sys_sendmsg+0x70d/0x870 net/socket.c:2378 ___sys_sendmsg+0xf3/0x170 net/socket.c:2432 __sys_sendmsg+0xe5/0x1b0 net/socket.c:2461 do_syscall_64+0x33/0x40 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x62/0xc7 RIP: 0033:0x7f570b8a2b19 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:00007f5708e18188 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007f570b9b5f60 RCX: 00007f570b8a2b19 RDX: 0000000000000000 RSI: 00000000200002c0 RDI: 0000000000000005 RBP: 00007f5708e181d0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002 R13: 00007ffe4ad8036f R14: 00007f5708e18300 R15: 0000000000022000 FAULT_INJECTION: forcing a failure. name fail_usercopy, interval 1, probability 0, space 0, times 0 CPU: 0 PID: 26748 Comm: syz-executor.3 Not tainted 5.10.211 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x107/0x167 lib/dump_stack.c:118 fail_dump lib/fault-inject.c:52 [inline] should_fail.cold+0x5/0xa lib/fault-inject.c:146 _copy_from_user+0x2e/0x1b0 lib/usercopy.c:15 copy_from_user include/linux/uaccess.h:192 [inline] __copy_msghdr_from_user+0x91/0x4b0 net/socket.c:2260 copy_msghdr_from_user net/socket.c:2311 [inline] sendmsg_copy_msghdr+0xa1/0x160 net/socket.c:2409 ___sys_sendmsg+0xc6/0x170 net/socket.c:2428 __sys_sendmmsg+0x195/0x470 net/socket.c:2518 __do_sys_sendmmsg net/socket.c:2547 [inline] __se_sys_sendmmsg net/socket.c:2544 [inline] __x64_sys_sendmmsg+0x99/0x100 net/socket.c:2544 do_syscall_64+0x33/0x40 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x62/0xc7 RIP: 0033:0x7f934106bb19 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:00007f933e5e1188 EFLAGS: 00000246 ORIG_RAX: 0000000000000133 RAX: ffffffffffffffda RBX: 00007f934117ef60 RCX: 00007f934106bb19 RDX: 000000007ffff000 RSI: 0000000020004d00 RDI: 0000000000000003 RBP: 00007f933e5e11d0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002 R13: 00007fffd72bbe2f R14: 00007f933e5e1300 R15: 0000000000022000 FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 CPU: 0 PID: 26863 Comm: syz-executor.4 Not tainted 5.10.211 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x107/0x167 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+0x5/0x20 mm/slab_common.c:1193 slab_pre_alloc_hook mm/slab.h:515 [inline] slab_alloc_node mm/slub.c:2821 [inline] __kmalloc_node_track_caller+0x74/0x3b0 mm/slub.c:4496 __kmalloc_reserve net/core/skbuff.c:142 [inline] __alloc_skb+0xb1/0x5b0 net/core/skbuff.c:210 skb_segment+0x9d8/0x3aa0 net/core/skbuff.c:3963 __udp_gso_segment+0x11c6/0x1830 net/ipv4/udp_offload.c:286 udp4_ufo_fragment+0x528/0x720 net/ipv4/udp_offload.c:387 inet_gso_segment+0x4fb/0x11a0 net/ipv4/af_inet.c:1382 skb_mac_gso_segment+0x273/0x570 net/core/dev.c:3349 __skb_gso_segment+0x32d/0x6d0 net/core/dev.c:3422 skb_gso_segment include/linux/netdevice.h:4768 [inline] validate_xmit_skb.constprop.0+0x4fe/0xda0 net/core/dev.c:3670 __dev_queue_xmit+0x87b/0x2710 net/core/dev.c:4174 neigh_connected_output+0x382/0x4d0 net/core/neighbour.c:1538 neigh_output include/net/neighbour.h:509 [inline] ip_finish_output2+0x6f1/0x21f0 net/ipv4/ip_output.c:237 __ip_finish_output.part.0+0x5f3/0xb50 net/ipv4/ip_output.c:315 __ip_finish_output net/ipv4/ip_output.c:303 [inline] ip_finish_output net/ipv4/ip_output.c:325 [inline] NF_HOOK_COND include/linux/netfilter.h:285 [inline] ip_output+0x2f7/0x600 net/ipv4/ip_output.c:439 dst_output include/net/dst.h:436 [inline] ip_local_out net/ipv4/ip_output.c:126 [inline] ip_send_skb+0xdd/0x260 net/ipv4/ip_output.c:1590 udp_send_skb+0x6da/0x11d0 net/ipv4/udp.c:965 udp_push_pending_frames net/ipv4/udp.c:993 [inline] udp_sendmsg+0x139a/0x2170 net/ipv4/udp.c:1284 udpv6_sendmsg+0x1bed/0x2af0 net/ipv6/udp.c:1374 FAULT_INJECTION: forcing a failure. name fail_usercopy, interval 1, probability 0, space 0, times 0 inet6_sendmsg+0x105/0x140 net/ipv6/af_inet6.c:654 sock_sendmsg_nosec net/socket.c:651 [inline] __sock_sendmsg+0xf2/0x190 net/socket.c:663 ____sys_sendmsg+0x70d/0x870 net/socket.c:2378 ___sys_sendmsg+0xf3/0x170 net/socket.c:2432 __sys_sendmsg+0xe5/0x1b0 net/socket.c:2461 do_syscall_64+0x33/0x40 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x62/0xc7 RIP: 0033:0x7f570b8a2b19 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:00007f5708e18188 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007f570b9b5f60 RCX: 00007f570b8a2b19 RDX: 0000000000000000 RSI: 00000000200002c0 RDI: 0000000000000005 RBP: 00007f5708e181d0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002 R13: 00007ffe4ad8036f R14: 00007f5708e18300 R15: 0000000000022000 CPU: 1 PID: 26874 Comm: syz-executor.7 Not tainted 5.10.211 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x107/0x167 lib/dump_stack.c:118 fail_dump lib/fault-inject.c:52 [inline] should_fail.cold+0x5/0xa lib/fault-inject.c:146 _copy_from_user+0x2e/0x1b0 lib/usercopy.c:15 copy_from_user include/linux/uaccess.h:192 [inline] __copy_msghdr_from_user+0x91/0x4b0 net/socket.c:2260 FAULT_INJECTION: forcing a failure. name fail_usercopy, interval 1, probability 0, space 0, times 0 copy_msghdr_from_user net/socket.c:2311 [inline] sendmsg_copy_msghdr+0xa1/0x160 net/socket.c:2409 ___sys_sendmsg+0xc6/0x170 net/socket.c:2428 __sys_sendmmsg+0x195/0x470 net/socket.c:2518 __do_sys_sendmmsg net/socket.c:2547 [inline] __se_sys_sendmmsg net/socket.c:2544 [inline] __x64_sys_sendmmsg+0x99/0x100 net/socket.c:2544 do_syscall_64+0x33/0x40 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x62/0xc7 RIP: 0033:0x7f4475f67b19 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:00007f44734dd188 EFLAGS: 00000246 ORIG_RAX: 0000000000000133 RAX: ffffffffffffffda RBX: 00007f447607af60 RCX: 00007f4475f67b19 RDX: 000000007ffff000 RSI: 0000000020004d00 RDI: 0000000000000003 RBP: 00007f44734dd1d0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002 R13: 00007ffea941b45f R14: 00007f44734dd300 R15: 0000000000022000 CPU: 0 PID: 26875 Comm: syz-executor.3 Not tainted 5.10.211 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x107/0x167 lib/dump_stack.c:118 fail_dump lib/fault-inject.c:52 [inline] should_fail.cold+0x5/0xa lib/fault-inject.c:146 _copy_from_user+0x2e/0x1b0 lib/usercopy.c:15 copy_from_user include/linux/uaccess.h:192 [inline] __copy_msghdr_from_user+0x91/0x4b0 net/socket.c:2260 FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 copy_msghdr_from_user net/socket.c:2311 [inline] sendmsg_copy_msghdr+0xa1/0x160 net/socket.c:2409 ___sys_sendmsg+0xc6/0x170 net/socket.c:2428 __sys_sendmmsg+0x195/0x470 net/socket.c:2518 __do_sys_sendmmsg net/socket.c:2547 [inline] __se_sys_sendmmsg net/socket.c:2544 [inline] __x64_sys_sendmmsg+0x99/0x100 net/socket.c:2544 do_syscall_64+0x33/0x40 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x62/0xc7 RIP: 0033:0x7f934106bb19 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:00007f933e5e1188 EFLAGS: 00000246 ORIG_RAX: 0000000000000133 RAX: ffffffffffffffda RBX: 00007f934117ef60 RCX: 00007f934106bb19 RDX: 000000007ffff000 RSI: 0000000020004d00 RDI: 0000000000000003 RBP: 00007f933e5e11d0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002 R13: 00007fffd72bbe2f R14: 00007f933e5e1300 R15: 0000000000022000 CPU: 1 PID: 26867 Comm: syz-executor.6 Not tainted 5.10.211 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x107/0x167 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+0x5/0x20 mm/slab_common.c:1193 slab_pre_alloc_hook mm/slab.h:515 [inline] slab_alloc_node mm/slub.c:2821 [inline] __kmalloc_node_track_caller+0x74/0x3b0 mm/slub.c:4496 __kmalloc_reserve net/core/skbuff.c:142 [inline] __alloc_skb+0xb1/0x5b0 net/core/skbuff.c:210 skb_segment+0x9d8/0x3aa0 net/core/skbuff.c:3963 __udp_gso_segment+0x11c6/0x1830 net/ipv4/udp_offload.c:286 udp4_ufo_fragment+0x528/0x720 net/ipv4/udp_offload.c:387 inet_gso_segment+0x4fb/0x11a0 net/ipv4/af_inet.c:1382 skb_mac_gso_segment+0x273/0x570 net/core/dev.c:3349 __skb_gso_segment+0x32d/0x6d0 net/core/dev.c:3422 skb_gso_segment include/linux/netdevice.h:4768 [inline] validate_xmit_skb.constprop.0+0x4fe/0xda0 net/core/dev.c:3670 __dev_queue_xmit+0x87b/0x2710 net/core/dev.c:4174 neigh_connected_output+0x382/0x4d0 net/core/neighbour.c:1538 neigh_output include/net/neighbour.h:509 [inline] ip_finish_output2+0x6f1/0x21f0 net/ipv4/ip_output.c:237 __ip_finish_output.part.0+0x5f3/0xb50 net/ipv4/ip_output.c:315 __ip_finish_output net/ipv4/ip_output.c:303 [inline] ip_finish_output net/ipv4/ip_output.c:325 [inline] NF_HOOK_COND include/linux/netfilter.h:285 [inline] ip_output+0x2f7/0x600 net/ipv4/ip_output.c:439 dst_output include/net/dst.h:436 [inline] ip_local_out net/ipv4/ip_output.c:126 [inline] ip_send_skb+0xdd/0x260 net/ipv4/ip_output.c:1590 udp_send_skb+0x6da/0x11d0 net/ipv4/udp.c:965 udp_push_pending_frames net/ipv4/udp.c:993 [inline] udp_sendmsg+0x139a/0x2170 net/ipv4/udp.c:1284 udpv6_sendmsg+0x1bed/0x2af0 net/ipv6/udp.c:1374 inet6_sendmsg+0x105/0x140 net/ipv6/af_inet6.c:654 sock_sendmsg_nosec net/socket.c:651 [inline] __sock_sendmsg+0xf2/0x190 net/socket.c:663 ____sys_sendmsg+0x70d/0x870 net/socket.c:2378 ___sys_sendmsg+0xf3/0x170 net/socket.c:2432 __sys_sendmsg+0xe5/0x1b0 net/socket.c:2461 do_syscall_64+0x33/0x40 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x62/0xc7 RIP: 0033:0x7fa1e2ebdb19 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:00007fa1e0433188 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007fa1e2fd0f60 RCX: 00007fa1e2ebdb19 RDX: 0000000000000000 RSI: 00000000200002c0 RDI: 0000000000000005 RBP: 00007fa1e04331d0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002 R13: 00007fff24e0554f R14: 00007fa1e0433300 R15: 0000000000022000 FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 CPU: 1 PID: 26883 Comm: syz-executor.4 Not tainted 5.10.211 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x107/0x167 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+0x5/0x20 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/0x310 mm/slub.c:2909 mem_pool_alloc mm/kmemleak.c:423 [inline] create_object.isra.0+0x3a/0xa20 mm/kmemleak.c:578 kmemleak_alloc_recursive include/linux/kmemleak.h:43 [inline] slab_post_alloc_hook mm/slab.h:534 [inline] slab_alloc_node mm/slub.c:2896 [inline] __kmalloc_node_track_caller+0x1a6/0x3b0 mm/slub.c:4496 __kmalloc_reserve net/core/skbuff.c:142 [inline] __alloc_skb+0xb1/0x5b0 net/core/skbuff.c:210 skb_segment+0x9d8/0x3aa0 net/core/skbuff.c:3963 __udp_gso_segment+0x11c6/0x1830 net/ipv4/udp_offload.c:286 udp4_ufo_fragment+0x528/0x720 net/ipv4/udp_offload.c:387 inet_gso_segment+0x4fb/0x11a0 net/ipv4/af_inet.c:1382 skb_mac_gso_segment+0x273/0x570 net/core/dev.c:3349 __skb_gso_segment+0x32d/0x6d0 net/core/dev.c:3422 skb_gso_segment include/linux/netdevice.h:4768 [inline] validate_xmit_skb.constprop.0+0x4fe/0xda0 net/core/dev.c:3670 __dev_queue_xmit+0x87b/0x2710 net/core/dev.c:4174 neigh_connected_output+0x382/0x4d0 net/core/neighbour.c:1538 neigh_output include/net/neighbour.h:509 [inline] ip_finish_output2+0x6f1/0x21f0 net/ipv4/ip_output.c:237 __ip_finish_output.part.0+0x5f3/0xb50 net/ipv4/ip_output.c:315 __ip_finish_output net/ipv4/ip_output.c:303 [inline] ip_finish_output net/ipv4/ip_output.c:325 [inline] NF_HOOK_COND include/linux/netfilter.h:285 [inline] ip_output+0x2f7/0x600 net/ipv4/ip_output.c:439 dst_output include/net/dst.h:436 [inline] ip_local_out net/ipv4/ip_output.c:126 [inline] ip_send_skb+0xdd/0x260 net/ipv4/ip_output.c:1590 udp_send_skb+0x6da/0x11d0 net/ipv4/udp.c:965 udp_push_pending_frames net/ipv4/udp.c:993 [inline] udp_sendmsg+0x139a/0x2170 net/ipv4/udp.c:1284 udpv6_sendmsg+0x1bed/0x2af0 net/ipv6/udp.c:1374 inet6_sendmsg+0x105/0x140 net/ipv6/af_inet6.c:654 sock_sendmsg_nosec net/socket.c:651 [inline] __sock_sendmsg+0xf2/0x190 net/socket.c:663 ____sys_sendmsg+0x70d/0x870 net/socket.c:2378 ___sys_sendmsg+0xf3/0x170 net/socket.c:2432 __sys_sendmsg+0xe5/0x1b0 net/socket.c:2461 do_syscall_64+0x33/0x40 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x62/0xc7 RIP: 0033:0x7f570b8a2b19 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:00007f5708e18188 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007f570b9b5f60 RCX: 00007f570b8a2b19 RDX: 0000000000000000 RSI: 00000000200002c0 RDI: 0000000000000005 RBP: 00007f5708e181d0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002 R13: 00007ffe4ad8036f R14: 00007f5708e18300 R15: 0000000000022000 FAULT_INJECTION: forcing a failure. name fail_usercopy, interval 1, probability 0, space 0, times 0 CPU: 1 PID: 26896 Comm: syz-executor.3 Not tainted 5.10.211 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x107/0x167 lib/dump_stack.c:118 fail_dump lib/fault-inject.c:52 [inline] should_fail.cold+0x5/0xa lib/fault-inject.c:146 _copy_from_user+0x2e/0x1b0 lib/usercopy.c:15 copy_from_user include/linux/uaccess.h:192 [inline] __copy_msghdr_from_user+0x91/0x4b0 net/socket.c:2260 copy_msghdr_from_user net/socket.c:2311 [inline] sendmsg_copy_msghdr+0xa1/0x160 net/socket.c:2409 ___sys_sendmsg+0xc6/0x170 net/socket.c:2428 __sys_sendmmsg+0x195/0x470 net/socket.c:2518 __do_sys_sendmmsg net/socket.c:2547 [inline] __se_sys_sendmmsg net/socket.c:2544 [inline] __x64_sys_sendmmsg+0x99/0x100 net/socket.c:2544 do_syscall_64+0x33/0x40 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x62/0xc7 RIP: 0033:0x7f934106bb19 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:00007f933e5e1188 EFLAGS: 00000246 ORIG_RAX: 0000000000000133 RAX: ffffffffffffffda RBX: 00007f934117ef60 RCX: 00007f934106bb19 RDX: 000000007ffff000 RSI: 0000000020004d00 RDI: 0000000000000003 RBP: 00007f933e5e11d0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002 R13: 00007fffd72bbe2f R14: 00007f933e5e1300 R15: 0000000000022000 FAULT_INJECTION: forcing a failure. name fail_usercopy, interval 1, probability 0, space 0, times 0 CPU: 1 PID: 26901 Comm: syz-executor.7 Not tainted 5.10.211 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x107/0x167 lib/dump_stack.c:118 fail_dump lib/fault-inject.c:52 [inline] should_fail.cold+0x5/0xa lib/fault-inject.c:146 _copy_from_user+0x2e/0x1b0 lib/usercopy.c:15 copy_from_user include/linux/uaccess.h:192 [inline] __copy_msghdr_from_user+0x91/0x4b0 net/socket.c:2260 copy_msghdr_from_user net/socket.c:2311 [inline] sendmsg_copy_msghdr+0xa1/0x160 net/socket.c:2409 ___sys_sendmsg+0xc6/0x170 net/socket.c:2428 __sys_sendmmsg+0x195/0x470 net/socket.c:2518 __do_sys_sendmmsg net/socket.c:2547 [inline] __se_sys_sendmmsg net/socket.c:2544 [inline] __x64_sys_sendmmsg+0x99/0x100 net/socket.c:2544 do_syscall_64+0x33/0x40 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x62/0xc7 RIP: 0033:0x7f4475f67b19 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:00007f44734dd188 EFLAGS: 00000246 ORIG_RAX: 0000000000000133 RAX: ffffffffffffffda RBX: 00007f447607af60 RCX: 00007f4475f67b19 RDX: 000000007ffff000 RSI: 0000000020004d00 RDI: 0000000000000003 RBP: 00007f44734dd1d0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002 R13: 00007ffea941b45f R14: 00007f44734dd300 R15: 0000000000022000 FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 CPU: 1 PID: 26916 Comm: syz-executor.6 Not tainted 5.10.211 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x107/0x167 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+0x5/0x20 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/0x310 mm/slub.c:2909 mem_pool_alloc mm/kmemleak.c:423 [inline] create_object.isra.0+0x3a/0xa20 mm/kmemleak.c:578 ---------------- Code disassembly (best guess), 1 bytes skipped: 0: ff c3 inc %ebx 2: 66 2e 0f 1f 84 00 00 nopw %cs:0x0(%rax,%rax,1) 9: 00 00 00 c: 0f 1f 40 00 nopl 0x0(%rax) 10: 48 89 f8 mov %rdi,%rax 13: 48 89 f7 mov %rsi,%rdi 16: 48 89 d6 mov %rdx,%rsi 19: 48 89 ca mov %rcx,%rdx 1c: 4d 89 c2 mov %r8,%r10 1f: 4d 89 c8 mov %r9,%r8 22: 4c 8b 4c 24 08 mov 0x8(%rsp),%r9 27: 0f 05 syscall * 29: 48 3d 01 f0 ff ff cmp $0xfffffffffffff001,%rax <-- trapping instruction 2f: 73 01 jae 0x32 31: c3 retq 32: 48 c7 c1 bc ff ff ff mov $0xffffffffffffffbc,%rcx 39: f7 d8 neg %eax 3b: 64 89 01 mov %eax,%fs:(%rcx) 3e: 48 rex.W