====================================== | [4296.221973][T11221] #0: ffffffffbaa59db0 (cb_lock){++++}-{3:3}, at: genl_rcv (net/netlink/genetlink.c:1219) | [4296.222316][T11221] #1: ffffffffbaa02548 (rtnl_mutex){+.+.}-{3:3}, at: netdev_nl_napi_set_doit (net/core/netdev-genl.c:350) | [ 4296.222631][T11221] | [ 4296.222631][T11221] stack backtrace: [ 4296.223542][T11221] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 4296.223747][T11221] Call Trace: [ 4296.223879][T11221] [4296.223968][T11221] dump_stack_lvl (lib/dump_stack.c:123) [4296.224144][T11221] lockdep_rcu_suspicious (kernel/locking/lockdep.c:6822) [4296.224313][T11221] napi_by_id (net/core/dev.c:6300 (discriminator 7)) [4296.224439][T11221] netdev_nl_napi_set_doit (net/core/netdev-genl.c:350) [4296.224606][T11221] ? __pfx_netdev_nl_napi_set_doit (net/core/netdev-genl.c:338) [4296.224821][T11221] ? __nla_parse (lib/nlattr.c:732) [4296.224987][T11221] ? genl_family_rcv_msg_attrs_parse.constprop.0 (net/netlink/genetlink.c:947) [4296.225236][T11221] genl_family_rcv_msg_doit (net/netlink/genetlink.c:1115) [4296.225401][T11221] ? __pfx_genl_family_rcv_msg_doit (net/netlink/genetlink.c:1088) [4296.225605][T11221] ? __pfx___lock_release (kernel/locking/lockdep.c:5477) [4296.225772][T11221] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5790) [4296.225945][T11221] ? validate_chain (kernel/locking/lockdep.c:3797 kernel/locking/lockdep.c:3817 kernel/locking/lockdep.c:3872) [4296.226125][T11221] genl_family_rcv_msg (net/netlink/genetlink.c:1195) [4296.226293][T11221] ? __pfx_genl_family_rcv_msg (net/netlink/genetlink.c:1160) [4296.226460][T11221] ? __pfx_netdev_nl_napi_set_doit (net/core/netdev-genl.c:338) [4296.226676][T11221] genl_rcv_msg (net/netlink/genetlink.c:65 net/netlink/genetlink.c:1211) [4296.226848][T11221] netlink_rcv_skb (net/netlink/af_netlink.c:2536) [4296.227012][T11221] ? __pfx_genl_rcv_msg (net/netlink/genetlink.c:1201) [4296.227184][T11221] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2513) [4296.227357][T11221] ? genl_rcv (net/netlink/genetlink.c:1219) [4296.227486][T11221] ? __pfx_down_read (kernel/locking/rwsem.c:1522) [4296.227652][T11221] ? netlink_deliver_tap (./include/linux/rcupdate.h:347 ./include/linux/rcupdate.h:880 net/netlink/af_netlink.c:340) [4296.227827][T11221] genl_rcv (net/netlink/genetlink.c:1220) [4296.227952][T11221] netlink_unicast (net/netlink/af_netlink.c:1316 net/netlink/af_netlink.c:1342) [4296.228119][T11221] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1327) [4296.228289][T11221] ? __wake_up (kernel/sched/wait.c:110 kernel/sched/wait.c:127) [4296.228418][T11221] netlink_sendmsg (net/netlink/af_netlink.c:1886) [4296.228588][T11221] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1805) [4296.228761][T11221] ? fdget (./include/linux/atomic/atomic-arch-fallback.h:479 ./include/linux/atomic/atomic-instrumented.h:50 fs/file.c:1114 fs/file.c:1128) [4296.228901][T11221] __sys_sendto (net/socket.c:729 net/socket.c:744 net/socket.c:2216) [4296.229066][T11221] ? __pfx___sys_sendto (net/socket.c:2186) [4296.229244][T11221] ? do_user_addr_fault (./include/linux/rcupdate.h:347 ./include/linux/rcupdate.h:880 ./include/linux/mm.h:729 arch/x86/mm/fault.c:1340) [4296.229412][T11221] ? __pfx___lock_release (kernel/locking/lockdep.c:5477) [4296.229576][T11221] ? __up_read (./arch/x86/include/asm/atomic64_64.h:79 ./include/linux/atomic/atomic-arch-fallback.h:2749 ./include/linux/atomic/atomic-long.h:184 ./include/linux/atomic/atomic-instrumented.h:3317 kernel/locking/rwsem.c:1345) [4296.229745][T11221] ? trace_lock_acquire (./include/trace/events/lock.h:24 (discriminator 52)) [4296.229910][T11221] ? __pfx___up_read (kernel/locking/rwsem.c:1337) [4296.230084][T11221] ? do_user_addr_fault (./include/linux/rcupdate.h:347 ./include/linux/rcupdate.h:880 ./include/linux/mm.h:729 arch/x86/mm/fault.c:1340) [4296.230257][T11221] ? do_user_addr_fault (./include/linux/rcupdate.h:882 ./include/linux/mm.h:729 arch/x86/mm/fault.c:1340) [4296.230420][T11221] __x64_sys_sendto (net/socket.c:2224) [4296.230583][T11221] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4347 kernel/locking/lockdep.c:4406) [4296.230787][T11221] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) [4296.230951][T11221] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) [ 4296.231155][T11221] RIP: 0033:0x7fbfe76d0700 [ 4296.231327][T11221] Code: ff ff 64 89 02 eb bd 0f 1f 00 f3 0f 1e fa 41 89 ca 64 8b 04 25 18 00 00 00 85 c0 75 1d 45 31 c9 45 31 c0 b8 2c 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 68 c3 0f 1f 80 00 00 00 00 41 54 48 83 ec 20 All code ======== 0: ff (bad) 1: ff 64 89 02 jmp *0x2(%rcx,%rcx,4) 5: eb bd jmp 0xffffffffffffffc4 7: 0f 1f 00 nopl (%rax) a: f3 0f 1e fa endbr64 e: 41 89 ca mov %ecx,%r10d 11: 64 8b 04 25 18 00 00 mov %fs:0x18,%eax 18: 00 19: 85 c0 test %eax,%eax 1b: 75 1d jne 0x3a 1d: 45 31 c9 xor %r9d,%r9d 20: 45 31 c0 xor %r8d,%r8d 23: b8 2c 00 00 00 mov $0x2c,%eax 28: 0f 05 syscall 2a:* 48 3d 00 f0 ff ff cmp $0xfffffffffffff000,%rax <-- trapping instruction 30: 77 68 ja 0x9a 32: c3 ret 33: 0f 1f 80 00 00 00 00 nopl 0x0(%rax) 3a: 41 54 push %r12 3c: 48 83 ec 20 sub $0x20,%rsp Code starting with the faulting instruction =========================================== 0: 48 3d 00 f0 ff ff cmp $0xfffffffffffff000,%rax 6: 77 68 ja 0x70 8: c3 ret 9: 0f 1f 80 00 00 00 00 nopl 0x0(%rax) 10: 41 54 push %r12 12: 48 83 ec 20 sub $0x20,%rsp [ 4296.231900][T11221] RSP: 002b:00007ffc6be47188 EFLAGS: 00000246 ORIG_RAX: 000000000000002c [ 4296.232154][T11221] RAX: ffffffffffffffda RBX: 00007ffc6be471a0 RCX: 00007fbfe76d0700 [ 4296.232405][T11221] RDX: 0000000000000034 RSI: 00007fbfe753d270 RDI: 0000000000000005 [ 4296.232658][T11221] RBP: 00007fbfe753d010 R08: 0000000000000000 R09: 0000000000000000 [ 4296.232911][T11221] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000354412f0 Finger prints: lockdep_rcu_suspicious:napi_by_id:netdev_nl_napi_set_doit:genl_family_rcv_msg_doit:genl_family_rcv_msg