====================================== | [ 297.095773][ T11] ================================================================== | [ 297.096244][ T11] BUG: KASAN: slab-out-of-bounds in vxlan_netdevice_event (drivers/net/vxlan/vxlan_core.c:4613 drivers/net/vxlan/vxlan_core.c:4636) vxlan | [ 297.096767][ T11] Read of size 8 at addr ffff888005b10bf0 by task kworker/u8:0/11 | [ 297.097182][ T11] [ 297.097757][ T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 297.098402][ T11] Workqueue: netns cleanup_net [ 297.098674][ T11] Call Trace: [ 297.098851][ T11] [ 297.099006][ T11] dump_stack_lvl (lib/dump_stack.c:107) [ 297.099266][ T11] print_address_description.constprop.0 (mm/kasan/report.c:378) [ 297.099633][ T11] ? vxlan_netdevice_event (drivers/net/vxlan/vxlan_core.c:4613 drivers/net/vxlan/vxlan_core.c:4636) vxlan [ 297.099969][ T11] print_report (mm/kasan/report.c:489) [ 297.100209][ T11] ? kasan_addr_to_slab (./arch/x86/include/asm/bitops.h:206 ./arch/x86/include/asm/bitops.h:238 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 ./include/linux/page-flags.h:481 mm/kasan/../slab.h:206 mm/kasan/common.c:38) [ 297.100493][ T11] kasan_report (mm/kasan/report.c:603) [ 297.100740][ T11] ? vxlan_netdevice_event (drivers/net/vxlan/vxlan_core.c:4613 drivers/net/vxlan/vxlan_core.c:4636) vxlan [ 297.101095][ T11] vxlan_netdevice_event (drivers/net/vxlan/vxlan_core.c:4613 drivers/net/vxlan/vxlan_core.c:4636) vxlan [ 297.101437][ T11] ? __pfx_vxlan_netdevice_event (drivers/net/vxlan/vxlan_core.c:4631) vxlan [ 297.101797][ T11] ? netconsole_netdev_event (drivers/net/netconsole.c:991) [ 297.102103][ T11] notifier_call_chain (kernel/notifier.c:93) [ 297.102395][ T11] unregister_netdevice_many_notify (net/core/dev.c:11095) [ 297.102721][ T11] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) [ 297.102970][ T11] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) [ 297.103217][ T11] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11035) [ 297.103600][ T11] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11019) [ 297.103932][ T11] default_device_exit_batch (net/core/dev.c:11629) [ 297.104251][ T11] ? __pfx_default_device_exit_batch (net/core/dev.c:11604) [ 297.104598][ T11] ? ops_exit_list (net/core/net_namespace.c:169 (discriminator 3)) [ 297.104871][ T11] cleanup_net (net/core/net_namespace.c:636 (discriminator 3)) [ 297.105149][ T11] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) [ 297.105457][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) [ 297.105723][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) [ 297.106007][ T11] ? process_one_work (kernel/workqueue.c:2609) [ 297.106273][ T11] process_one_work (kernel/workqueue.c:2633) [ 297.106553][ T11] ? 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) [ 297.106789][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) [ 297.107094][ T11] ? assign_work (kernel/workqueue.c:1101) [ 297.107333][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) [ 297.107597][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) [ 297.107860][ T11] kthread (kernel/kthread.c:388) [ 297.108083][ T11] ? __pfx_kthread (kernel/kthread.c:341) [ 297.108319][ T11] ret_from_fork (arch/x86/kernel/process.c:147) [ 297.108572][ T11] ? __pfx_kthread (kernel/kthread.c:341) [ 297.108810][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) | [ 297.127448][ T11] ================================================================== | [ 297.127886][ T11] Disabling lock debugging due to kernel taint | [ 297.128230][ T11] general protection fault, probably for non-canonical address 0xf999959999999999: 0000 [#1] PREEMPT SMP KASAN NOPTI | [ 297.128901][ T11] KASAN: maybe wild-memory-access in range [0xccccccccccccccc8-0xcccccccccccccccf] [ 297.129907][ T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 297.130570][ T11] Workqueue: netns cleanup_net [ 297.130841][ T11] RIP: 0010:vxlan_netdevice_event (drivers/net/vxlan/vxlan_core.c:4613 drivers/net/vxlan/vxlan_core.c:4636) vxlan [ 297.131238][ T11] Code: 00 00 00 48 b9 00 00 00 00 00 fc ff df 49 89 c0 48 89 44 24 08 49 c1 e8 03 4d 8d 24 08 eb 2c 48 8d 53 30 48 89 d0 48 c1 e8 03 <80> 3c 08 00 0f 85 e0 00 00 00 48 8b 43 30 49 89 dd 48 83 e8 30 49 All code ======== 0: 00 00 add %al,(%rax) 2: 00 48 b9 add %cl,-0x47(%rax) 5: 00 00 add %al,(%rax) 7: 00 00 add %al,(%rax) 9: 00 fc add %bh,%ah b: ff (bad) c: df 49 89 fisttps -0x77(%rcx) f: c0 48 89 44 rorb $0x44,-0x77(%rax) 13: 24 08 and $0x8,%al 15: 49 c1 e8 03 shr $0x3,%r8 19: 4d 8d 24 08 lea (%r8,%rcx,1),%r12 1d: eb 2c jmp 0x4b 1f: 48 8d 53 30 lea 0x30(%rbx),%rdx 23: 48 89 d0 mov %rdx,%rax 26: 48 c1 e8 03 shr $0x3,%rax 2a:* 80 3c 08 00 cmpb $0x0,(%rax,%rcx,1) <-- trapping instruction 2e: 0f 85 e0 00 00 00 jne 0x114 34: 48 8b 43 30 mov 0x30(%rbx),%rax 38: 49 89 dd mov %rbx,%r13 3b: 48 83 e8 30 sub $0x30,%rax 3f: 49 rex.WB Code starting with the faulting instruction =========================================== 0: 80 3c 08 00 cmpb $0x0,(%rax,%rcx,1) 4: 0f 85 e0 00 00 00 jne 0xea a: 48 8b 43 30 mov 0x30(%rbx),%rax e: 49 89 dd mov %rbx,%r13 11: 48 83 e8 30 sub $0x30,%rax 15: 49 rex.WB [ 297.132258][ T11] RSP: 0018:ffffc900000bf980 EFLAGS: 00010a07 [ 297.132595][ T11] RAX: 1999999999999999 RBX: cccccccccccccc9c RCX: dffffc0000000000 [ 297.133021][ T11] RDX: cccccccccccccccc RSI: 0000000000000004 RDI: ffff888005b10c44 [ 297.133452][ T11] RBP: 1ffff92000017f33 R08: 1ffff1100073221a R09: ffffc900000bf9b8 [ 297.133888][ T11] R10: ffffffffacc34a07 R11: 205d313154202020 R12: ffffed100073221a [ 297.134339][ T11] R13: ffff888005b10bc0 R14: ffff888006021000 R15: ffff888003991000 [ 297.134775][ T11] FS: 0000000000000000(0000) GS:ffff888035a00000(0000) knlGS:0000000000000000 [ 297.135260][ T11] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 297.135617][ T11] CR2: 00007f09add60450 CR3: 0000000009130003 CR4: 0000000000770ef0 [ 297.136059][ T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 297.136488][ T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 297.136924][ T11] PKRU: 55555554 [ 297.137119][ T11] Call Trace: [ 297.137332][ T11] [ 297.137486][ T11] ? die_addr (arch/x86/kernel/dumpstack.c:421 arch/x86/kernel/dumpstack.c:460) [ 297.137720][ T11] ? exc_general_protection (arch/x86/kernel/traps.c:701 arch/x86/kernel/traps.c:643) [ 297.138028][ T11] ? asm_exc_general_protection (./arch/x86/include/asm/idtentry.h:564) [ 297.138355][ T11] ? vxlan_netdevice_event (drivers/net/vxlan/vxlan_core.c:4613 drivers/net/vxlan/vxlan_core.c:4636) vxlan [ 297.138682][ T11] ? __pfx_vxlan_netdevice_event (drivers/net/vxlan/vxlan_core.c:4631) vxlan [ 297.139026][ T11] ? netconsole_netdev_event (drivers/net/netconsole.c:991) [ 297.139316][ T11] notifier_call_chain (kernel/notifier.c:93) [ 297.139580][ T11] unregister_netdevice_many_notify (net/core/dev.c:11095) [ 297.139936][ T11] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) [ 297.140193][ T11] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) [ 297.140438][ T11] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11035) [ 297.140780][ T11] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11019) [ 297.141129][ T11] default_device_exit_batch (net/core/dev.c:11629) [ 297.141427][ T11] ? __pfx_default_device_exit_batch (net/core/dev.c:11604) [ 297.141747][ T11] ? ops_exit_list (net/core/net_namespace.c:169 (discriminator 3)) [ 297.141987][ T11] cleanup_net (net/core/net_namespace.c:636 (discriminator 3)) [ 297.142218][ T11] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) [ 297.142503][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) [ 297.142759][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) [ 297.143000][ T11] ? process_one_work (kernel/workqueue.c:2609) [ 297.143264][ T11] process_one_work (kernel/workqueue.c:2633) [ 297.143517][ T11] ? 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) [ 297.143750][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) [ 297.144048][ T11] ? assign_work (kernel/workqueue.c:1101) [ 297.144296][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) [ 297.144555][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) [ 297.144831][ T11] kthread (kernel/kthread.c:388) [ 297.145053][ T11] ? __pfx_kthread (kernel/kthread.c:341) [ 297.145311][ T11] ret_from_fork (arch/x86/kernel/process.c:147) [ 297.145558][ T11] ? __pfx_kthread (kernel/kthread.c:341) Finger prints: dump_stack_lvl:print_report:kasan_report:vxlan_netdevice_event vxlan_netdevice_event:notifier_call_chain:unregister_netdevice_many_notify:default_device_exit_batch