Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '[localhost]:30223' (ECDSA) to the list of known hosts. syzkaller login: [ 266.622646][ T41] audit: type=1400 audit(1597039311.133:42): avc: denied { map } for pid=12751 comm="syz-executor391" path="/syz-executor391622727" dev="sda1" ino=16528 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:file_t:s0 tclass=file permissive=1 [ 267.352330][T12752] IPVS: ftp: loaded support on port[0] = 21 [ 269.106473][T12752] chnl_net:caif_netlink_parms(): no params data found [ 269.287491][T12752] bridge0: port 1(bridge_slave_0) entered blocking state [ 269.325193][T12752] bridge0: port 1(bridge_slave_0) entered disabled state [ 269.384255][T12752] device bridge_slave_0 entered promiscuous mode [ 269.456515][T12752] bridge0: port 2(bridge_slave_1) entered blocking state [ 269.563541][T12752] bridge0: port 2(bridge_slave_1) entered disabled state [ 269.690850][T12752] device bridge_slave_1 entered promiscuous mode [ 269.839524][T12752] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 269.874420][T12752] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 269.914232][T12752] team0: Port device team_slave_0 added [ 269.932143][T12752] team0: Port device team_slave_1 added [ 269.964846][T12752] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 269.983521][T12752] batman_adv: batadv0: The MTU of interface batadv_slave_0 is too small (1500) to handle the transport of batman-adv packets. Packets going over this interface will be fragmented on layer2 which could impact the performance. Setting the MTU to 1560 would solve the problem. [ 270.065058][T12752] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 270.105031][T12752] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 270.120847][T12752] batman_adv: batadv0: The MTU of interface batadv_slave_1 is too small (1500) to handle the transport of batman-adv packets. Packets going over this interface will be fragmented on layer2 which could impact the performance. Setting the MTU to 1560 would solve the problem. [ 270.181927][T12752] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 270.308638][T12752] device hsr_slave_0 entered promiscuous mode [ 270.386750][T12752] device hsr_slave_1 entered promiscuous mode [ 270.837002][ T41] audit: type=1400 audit(1597039315.353:43): avc: denied { create } for pid=12752 comm="syz-executor391" scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tclass=netlink_generic_socket permissive=1 [ 270.853749][T12752] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 271.043681][ T41] audit: type=1400 audit(1597039315.363:44): avc: denied { write } for pid=12752 comm="syz-executor391" scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tclass=netlink_generic_socket permissive=1 [ 271.043863][ T41] audit: type=1400 audit(1597039315.363:45): avc: denied { read } for pid=12752 comm="syz-executor391" scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tclass=netlink_generic_socket permissive=1 [ 271.594597][T12752] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 271.707264][T12752] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 271.838690][T12752] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 272.295237][T12752] 8021q: adding VLAN 0 to HW filter on device bond0 [ 272.391319][ T1231] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 272.462121][ T1231] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 272.585553][T12752] 8021q: adding VLAN 0 to HW filter on device team0 [ 272.653284][T12758] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 272.717721][T12758] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 272.774992][T12758] bridge0: port 1(bridge_slave_0) entered blocking state [ 272.821728][T12758] bridge0: port 1(bridge_slave_0) entered forwarding state [ 272.874497][T12758] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 272.968671][T12758] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 273.030674][T12758] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 273.090127][T12758] bridge0: port 2(bridge_slave_1) entered blocking state [ 273.141605][T12758] bridge0: port 2(bridge_slave_1) entered forwarding state [ 273.198410][T12759] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 273.276830][T12759] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 273.347420][T12758] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 273.390801][T12758] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 273.431885][T12758] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 273.473408][T12758] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 273.506181][T12758] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 273.533422][T12758] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 273.568206][T12758] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 273.605163][T12758] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 273.642219][T12758] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 273.684691][T12752] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 273.761400][T12759] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 273.798154][T12759] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 273.833109][T12752] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 273.892574][ T2547] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 273.972937][ T2547] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 274.072446][T12752] device veth0_vlan entered promiscuous mode [ 274.131132][ T2547] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 274.183307][ T2547] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 274.233007][ T2547] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 274.268556][ T2547] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 274.310477][T12752] device veth1_vlan entered promiscuous mode [ 274.363319][T12758] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 274.397433][T12758] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 274.434635][T12758] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 274.468565][T12758] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 274.524376][T12752] device veth0_macvtap entered promiscuous mode [ 274.588156][T12752] device veth1_macvtap entered promiscuous mode [ 274.637779][T12752] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 274.686585][ T1231] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 274.727821][ T1231] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 274.773929][ T1231] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 274.828497][ T1231] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 274.908554][T12752] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 274.973723][ T1231] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 275.041552][ T1231] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready executing program [ 277.716563][T12765] general protection fault, probably for non-canonical address 0xdffffc000000004c: 0000 [#1] PREEMPT SMP KASAN [ 277.718212][T12765] KASAN: null-ptr-deref in range [0x0000000000000260-0x0000000000000267] [ 277.868551][T12765] CPU: 0 PID: 12765 Comm: syz-executor391 Not tainted 5.8.0-syzkaller #0 [ 277.868551][T12765] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.12.0-59-gc9ba5276e321-prebuilt.qemu.org 04/01/2014 [ 277.868551][T12765] RIP: 0010:sctp_ulpevent_notify_peer_addr_change+0xa9/0xad0 [ 277.868551][T12765] Code: 03 80 3c 18 00 0f 85 9f 08 00 00 48 8b 9d b0 00 00 00 48 b8 00 00 00 00 00 fc ff df 48 8d bb 60 02 00 00 48 89 fa 48 c1 ea 03 <0f> b6 04 02 84 c0 74 08 3c 03 0f 8e 3a 08 00 00 44 8b a3 60 02 00 [ 277.868551][T12765] RSP: 0018:ffffc90000d27380 EFLAGS: 00010202 [ 277.868551][T12765] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 0000000000000000 [ 277.868551][T12765] RDX: 000000000000004c RSI: ffffffff875c9422 RDI: 0000000000000260 [ 277.868551][T12765] RBP: ffff8880235da158 R08: 0000000000000001 R09: ffff8880234cdd48 [ 277.868551][T12765] R10: fffffbfff155f111 R11: 0000000000000000 R12: 0000000000000001 [ 277.868551][T12765] R13: 1ffff920001a4e76 R14: 0000000000000004 R15: 0000000000000000 [ 277.868551][T12765] FS: 00007fdd571b7700(0000) GS:ffff88802ce00000(0000) knlGS:0000000000000000 [ 277.868551][T12765] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 278.686252][T12765] CR2: ffffffffff600400 CR3: 000000001c9d0000 CR4: 0000000000350ef0 [ 278.726197][T12765] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 278.756050][T12765] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 278.796085][T12765] Call Trace: [ 278.816100][T12765] ? sctp_unhash_transport+0x7b8/0x1080 [ 278.866887][T12765] ? sctp_ulpevent_make_assoc_change+0xa40/0xa40 [ 278.916522][T12765] ? lock_downgrade+0x830/0x830 [ 278.936379][T12765] ? mark_held_locks+0x9f/0xe0 [ 278.965763][T12765] ? lockdep_hardirqs_on_prepare+0x354/0x530 [ 278.996010][T12765] ? sctp_unhash_transport+0x8eb/0x1080 [ 279.036071][T12765] ? trace_hardirqs_on+0x5f/0x220 [ 279.066521][T12765] ? sctp_unhash_transport+0x7da/0x1080 [ 279.106350][T12765] sctp_assoc_set_primary+0x6c/0x300 [ 279.136128][T12765] sctp_assoc_rm_peer+0x6f7/0x950 [ 279.166586][T12765] ? __sanitizer_cov_trace_switch+0x45/0x70 [ 279.195968][T12765] sctp_assoc_update+0x588/0xfd0 [ 279.216046][T12765] sctp_do_sm+0x27f8/0x4d80 [ 279.256483][T12765] ? sctp_do_8_2_transport_strike.constprop.0+0xa60/0xa60 [ 279.306407][T12765] ? lockdep_hardirqs_on_prepare+0x530/0x530 [ 279.356201][T12765] ? lock_downgrade+0x830/0x830 [ 279.375941][T12765] ? mark_lock+0xbc/0x1710 [ 279.416204][T12765] ? lock_acquire+0x1f1/0xad0 [ 279.446152][T12765] ? ktime_get+0x3e/0x120 [ 279.476318][T12765] ? find_held_lock+0x2d/0x110 [ 279.506119][T12765] ? trace_hardirqs_on+0x5f/0x220 [ 279.546271][T12765] ? lockdep_hardirqs_on+0x76/0xf0 [ 279.576388][T12765] ? read_seqcount_begin.constprop.0+0x139/0x1f0 [ 279.636307][T12765] sctp_assoc_bh_rcv+0x386/0x6c0 [ 279.676495][T12765] sctp_inq_push+0x1da/0x270 [ 279.717306][T12765] sctp_backlog_rcv+0x19e/0x5c0 [ 279.756538][T12765] __release_sock+0x134/0x3a0 [ 279.796565][T12765] release_sock+0x54/0x1b0 [ 279.826114][T12765] sctp_wait_for_connect+0x30f/0x540 [ 279.866072][T12765] ? sctp_accept+0x690/0x690 [ 279.896408][T12765] ? add_wait_queue_exclusive+0x180/0x180 [ 279.926458][T12765] ? sctp_primitive_ASSOCIATE+0x98/0xc0 [ 279.966090][T12765] __sctp_connect+0x96b/0xc00 [ 279.996636][T12765] ? sctp_connect_new_asoc+0x770/0x770 [ 280.036019][T12765] ? __might_fault+0x190/0x1d0 [ 280.055888][T12765] ? security_sctp_bind_connect+0x8f/0xc0 [ 280.085997][T12765] __sctp_setsockopt_connectx+0x12d/0x180 [ 280.116293][T12765] sctp_setsockopt+0x1642/0x70d0 [ 280.166309][T12765] ? __sctp_setsockopt_connectx+0x180/0x180 [ 280.196207][T12765] ? selinux_netlbl_socket_setsockopt+0x9e/0x420 [ 280.225945][T12765] ? selinux_netlbl_sock_rcv_skb+0x530/0x530 [ 280.256066][T12765] ? __fget_files+0x294/0x400 [ 280.275836][T12765] ? selinux_socket_setsockopt+0x6a/0x80 [ 280.296126][T12765] __sys_setsockopt+0x24a/0x480 [ 280.316141][T12765] ? __sock_recv_wifi_status+0x1b0/0x1b0 [ 280.335923][T12765] ? find_held_lock+0x2d/0x110 [ 280.356035][T12765] ? lock_is_held_type+0xbb/0xf0 [ 280.376099][T12765] ? syscall_enter_from_user_mode+0x20/0x290 [ 280.396044][T12765] ? lockdep_hardirqs_on_prepare+0x354/0x530 [ 280.428187][T12765] __x64_sys_setsockopt+0xba/0x150 [ 280.435987][T12765] ? syscall_enter_from_user_mode+0x20/0x290 [ 280.466097][T12765] do_syscall_64+0x2d/0x70 [ 280.486208][T12765] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 280.506010][T12765] RIP: 0033:0x43e119 [ 280.519235][T12765] Code: e8 4c b5 02 00 48 83 c4 18 c3 0f 1f 80 00 00 00 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 0f 83 bb d0 fc ff c3 66 2e 0f 1f 84 00 00 00 00 [ 280.586089][T12765] RSP: 002b:00007fdd571b6ce8 EFLAGS: 00000246 ORIG_RAX: 0000000000000036 [ 280.616203][T12765] RAX: ffffffffffffffda RBX: 00000000006c7c58 RCX: 000000000043e119 [ 280.656235][T12765] RDX: 000000000000006e RSI: 0000000000000084 RDI: 0000000000000003 [ 280.696225][T12765] RBP: 00000000006c7c50 R08: 0000000000000020 R09: 0000000000000000 [ 280.756303][T12765] R10: 0000000020000000 R11: 0000000000000246 R12: 00000000006c7c5c [ 280.796410][T12765] R13: 00007ffdb7fcef0f R14: 00007fdd57197000 R15: 0000000000000003 [ 280.856324][T12765] Modules linked in: [ 280.975847][ T0] NOHZ: local_softirq_pending 08 [ 280.989604][T12765] ---[ end trace 49c057cb66761ca9 ]--- [ 281.019170][T12758] Bluetooth: hci0: command 0x0409 tx timeout [ 281.056345][T12765] RIP: 0010:sctp_ulpevent_notify_peer_addr_change+0xa9/0xad0 [ 281.119074][T12765] Code: 03 80 3c 18 00 0f 85 9f 08 00 00 48 8b 9d b0 00 00 00 48 b8 00 00 00 00 00 fc ff df 48 8d bb 60 02 00 00 48 89 fa 48 c1 ea 03 <0f> b6 04 02 84 c0 74 08 3c 03 0f 8e 3a 08 00 00 44 8b a3 60 02 00 [ 281.233424][T12765] RSP: 0018:ffffc90000d27380 EFLAGS: 00010202 [ 281.253704][T12765] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 0000000000000000 [ 281.296672][T12765] RDX: 000000000000004c RSI: ffffffff875c9422 RDI: 0000000000000260 [ 281.351715][T12765] RBP: ffff8880235da158 R08: 0000000000000001 R09: ffff8880234cdd48 [ 281.390707][T12765] R10: fffffbfff155f111 R11: 0000000000000000 R12: 0000000000000001 [ 281.421887][T12765] R13: 1ffff920001a4e76 R14: 0000000000000004 R15: 0000000000000000 [ 281.452620][T12765] FS: 00007fdd571b7700(0000) GS:ffff88802cf00000(0000) knlGS:0000000000000000 [ 281.504424][T12765] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 281.551713][T12765] CR2: ffffffffff600400 CR3: 000000001c9d0000 CR4: 0000000000350ee0 [ 281.606394][T12765] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 281.664525][T12765] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 281.708330][T12765] Kernel panic - not syncing: Fatal exception [ 281.718117][T12765] Kernel Offset: disabled [ 281.718117][T12765] Rebooting in 86400 seconds..