====================================== | WAIT TIMEOUT stdout | | [ 2179.105068][T16342] general protection fault, probably for non-canonical address 0xdffffc0000012d10: 0000 [#1] PREEMPT SMP KASAN NOPTI | [ 2179.105437][T16342] KASAN: probably user-memory-access in range [0x0000000000096880-0x0000000000096887] [ 2179.105891][T16342] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [2179.106198][T16342] RIP: 0010:nh_valid_get_del_req (./include/net/netlink.h:1680 net/ipv4/nexthop.c:3235) [ 2179.106377][T16342] Code: ea 03 80 3c 02 00 0f 85 7a 02 00 00 48 8b 5e 70 48 85 db 74 6b 48 b8 00 00 00 00 00 fc ff df 48 8d 7b 04 48 89 fa 48 c1 ea 03 <0f> b6 14 02 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 51 All code ======== 0: ea (bad) 1: 03 80 3c 02 00 0f add 0xf00023c(%rax),%eax 7: 85 7a 02 test %edi,0x2(%rdx) a: 00 00 add %al,(%rax) c: 48 8b 5e 70 mov 0x70(%rsi),%rbx 10: 48 85 db test %rbx,%rbx 13: 74 6b je 0x80 15: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax 1c: fc ff df 1f: 48 8d 7b 04 lea 0x4(%rbx),%rdi 23: 48 89 fa mov %rdi,%rdx 26: 48 c1 ea 03 shr $0x3,%rdx 2a:* 0f b6 14 02 movzbl (%rdx,%rax,1),%edx <-- trapping instruction 2e: 48 89 f8 mov %rdi,%rax 31: 83 e0 07 and $0x7,%eax 34: 83 c0 03 add $0x3,%eax 37: 38 d0 cmp %dl,%al 39: 7c 08 jl 0x43 3b: 84 d2 test %dl,%dl 3d: 0f .byte 0xf 3e: 85 .byte 0x85 3f: 51 push %rcx Code starting with the faulting instruction =========================================== 0: 0f b6 14 02 movzbl (%rdx,%rax,1),%edx 4: 48 89 f8 mov %rdi,%rax 7: 83 e0 07 and $0x7,%eax a: 83 c0 03 add $0x3,%eax d: 38 d0 cmp %dl,%al f: 7c 08 jl 0x19 11: 84 d2 test %dl,%dl 13: 0f .byte 0xf 14: 85 .byte 0x85 15: 51 push %rcx [ 2179.106851][T16342] RSP: 0018:ffffc90002c4f4f8 EFLAGS: 00010203 [ 2179.107024][T16342] RAX: dffffc0000000000 RBX: 0000000000096883 RCX: ffffc90002c4f560 [ 2179.107235][T16342] RDX: 0000000000012d10 RSI: ffffc90002c4f5c0 RDI: 0000000000096887 [ 2179.107439][T16342] RBP: ffff888011a24040 R08: ffffc90002c4f840 R09: 0000000000000004 [ 2179.107640][T16342] R10: dffffc0000000000 R11: 0000000000000001 R12: ffffc90002c4f570 [ 2179.107841][T16342] R13: 0000000000000000 R14: ffffc90002c4f840 R15: ffffc90002c4f5c0 [ 2179.108040][T16342] FS: 00007f9024264c40(0000) GS:ffff888036100000(0000) knlGS:0000000000000000 [ 2179.108287][T16342] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 2179.108457][T16342] CR2: 00007f5e69d6e000 CR3: 0000000012f28001 CR4: 0000000000770ef0 [ 2179.108662][T16342] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 2179.108861][T16342] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 2179.109059][T16342] PKRU: 55555554 [ 2179.109160][T16342] Call Trace: [ 2179.109261][T16342] [2179.109330][T16342] ? die_addr (arch/x86/kernel/dumpstack.c:421 arch/x86/kernel/dumpstack.c:460) [2179.109433][T16342] ? exc_general_protection (arch/x86/kernel/traps.c:701 arch/x86/kernel/traps.c:643) [2179.109586][T16342] ? asm_exc_general_protection (./arch/x86/include/asm/idtentry.h:564) [2179.109725][T16342] ? nh_valid_get_del_req (./include/net/netlink.h:1680 net/ipv4/nexthop.c:3235) [2179.109858][T16342] ? __nla_parse (lib/nlattr.c:732) [2179.109992][T16342] rtm_del_nexthop (net/ipv4/nexthop.c:3264) [2179.110124][T16342] ? __pfx_rtm_del_nexthop (net/ipv4/nexthop.c:3245) [2179.110255][T16342] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) [2179.110389][T16342] ? rtnetlink_rcv_msg (net/core/rtnetlink.c:6593) [2179.110523][T16342] ? __mutex_lock (./arch/x86/include/asm/preempt.h:94 kernel/locking/mutex.c:618 kernel/locking/mutex.c:752) [2179.110661][T16342] ? rtnetlink_rcv_msg (net/core/rtnetlink.c:6593) [2179.110793][T16342] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) [2179.110926][T16342] ? __pfx___lock_release (kernel/locking/lockdep.c:5406) [2179.111061][T16342] rtnetlink_rcv_msg (net/core/rtnetlink.c:6595) [2179.111193][T16342] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6489) [2179.111328][T16342] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) [2179.111460][T16342] ? mark_lock (kernel/locking/lockdep.c:4656 (discriminator 3)) [2179.111561][T16342] ? __lock_acquire (kernel/locking/lockdep.c:5137) [2179.111695][T16342] netlink_rcv_skb (net/netlink/af_netlink.c:2559) [2179.111828][T16342] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6489) [2179.111960][T16342] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2536) [2179.112090][T16342] ? lock_acquire.part.0 (kernel/locking/lockdep.c:467 kernel/locking/lockdep.c:5756) [2179.112225][T16342] ? __pfx___netlink_lookup (net/netlink/af_netlink.c:512) [2179.112360][T16342] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) [2179.112491][T16342] ? netlink_deliver_tap (./include/linux/rcupdate.h:308 ./include/linux/rcupdate.h:783 ./include/net/netns/generic.h:48 net/netlink/af_netlink.c:333) [2179.112623][T16342] ? netlink_deliver_tap (./include/linux/rcupdate.h:308 ./include/linux/rcupdate.h:783 ./include/net/netns/generic.h:48 net/netlink/af_netlink.c:333) [2179.112758][T16342] ? netlink_deliver_tap (./include/linux/rcupdate.h:308 ./include/linux/rcupdate.h:783 net/netlink/af_netlink.c:340) [2179.112890][T16342] netlink_unicast (net/netlink/af_netlink.c:1335 net/netlink/af_netlink.c:1361) [2179.113023][T16342] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1346) [2179.113162][T16342] ? find_held_lock (kernel/locking/lockdep.c:5244) [2179.113308][T16342] netlink_sendmsg (net/netlink/af_netlink.c:1905) [2179.113452][T16342] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1824) [2179.113584][T16342] ? __might_fault (mm/memory.c:6080 mm/memory.c:6073) [2179.113719][T16342] ? __import_iovec (lib/iov_iter.c:1261 lib/iov_iter.c:1277) [2179.113854][T16342] ____sys_sendmsg (net/socket.c:730 net/socket.c:745 net/socket.c:2584) [2179.113989][T16342] ? __pfx_____sys_sendmsg (net/socket.c:2530) [2179.114121][T16342] ? __pfx_copy_msghdr_from_user (net/socket.c:2510) [2179.114287][T16342] ___sys_sendmsg (net/socket.c:2640) [2179.114419][T16342] ? __pfx____sys_sendmsg (net/socket.c:2627) [2179.114558][T16342] ? kfree (./include/trace/events/kmem.h:94 mm/slub.c:4396) [2179.114660][T16342] ? ___sys_recvmsg (net/socket.c:2835) [2179.114795][T16342] ? __pfx____sys_recvmsg (net/socket.c:2835) [2179.114928][T16342] ? find_held_lock (kernel/locking/lockdep.c:5244) [2179.115064][T16342] ? __might_fault (mm/memory.c:6080 mm/memory.c:6073) [2179.115196][T16342] ? __pfx___lock_release (kernel/locking/lockdep.c:5406) [2179.115337][T16342] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) [2179.115470][T16342] ? __fget_light (./include/linux/atomic/atomic-arch-fallback.h:479 ./include/linux/atomic/atomic-instrumented.h:50 fs/file.c:1145) [2179.115605][T16342] __sys_sendmsg (./include/linux/file.h:32 net/socket.c:2669) [2179.115743][T16342] ? __pfx___sys_sendmsg (net/socket.c:2655) [2179.115874][T16342] ? __pfx_rseq_ip_fixup (kernel/rseq.c:275) [2179.116010][T16342] ? rseq_update_cpu_node_id (./include/trace/events/rseq.h:11 kernel/rseq.c:108) [2179.116144][T16342] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) [2179.116280][T16342] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:129) [ 2179.116445][T16342] RIP: 0033:0x7f902446d7b7 [ 2179.116585][T16342] Code: 0a 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b9 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 2e 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 89 54 24 1c 48 89 74 24 10 All code ======== 0: 0a 00 or (%rax),%al 2: f7 d8 neg %eax 4: 64 89 02 mov %eax,%fs:(%rdx) 7: 48 c7 c0 ff ff ff ff mov $0xffffffffffffffff,%rax e: eb b9 jmp 0xffffffffffffffc9 10: 0f 1f 00 nopl (%rax) 13: f3 0f 1e fa endbr64 17: 64 8b 04 25 18 00 00 mov %fs:0x18,%eax 1e: 00 1f: 85 c0 test %eax,%eax 21: 75 10 jne 0x33 23: b8 2e 00 00 00 mov $0x2e,%eax 28: 0f 05 syscall 2a:* 48 3d 00 f0 ff ff cmp $0xfffffffffffff000,%rax <-- trapping instruction 30: 77 51 ja 0x83 32: c3 ret 33: 48 83 ec 28 sub $0x28,%rsp 37: 89 54 24 1c mov %edx,0x1c(%rsp) 3b: 48 89 74 24 10 mov %rsi,0x10(%rsp) Code starting with the faulting instruction =========================================== 0: 48 3d 00 f0 ff ff cmp $0xfffffffffffff000,%rax 6: 77 51 ja 0x59 8: c3 ret 9: 48 83 ec 28 sub $0x28,%rsp d: 89 54 24 1c mov %edx,0x1c(%rsp) 11: 48 89 74 24 10 mov %rsi,0x10(%rsp) [ 2179.117060][T16342] RSP: 002b:00007fffccd782e8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 2179.117260][T16342] RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 00007f902446d7b7 [ 2179.117462][T16342] RDX: 0000000000000000 RSI: 00007fffccd78350 RDI: 0000000000000006 [ 2179.117662][T16342] RBP: 00007fffccd785e8 R08: 0000000000000004 R09: 0000000000000078 [ 2179.117870][T16342] R10: 000000000000009b R11: 0000000000000246 R12: 0000000000495540 Finger prints: nh_valid_get_del_req:rtm_del_nexthop:rtnetlink_rcv_msg:netlink_rcv_skb