syzkaller login: [ 187.063800][ T2920] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'. [ 187.079391][ T2920] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'. [ 203.357596][ T2920] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'. [ 203.440565][ T2920] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'. Warning: Permanently added '[localhost]:61937' (ECDSA) to the list of known hosts. 1970/01/01 00:03:47 fuzzer started 1970/01/01 00:03:53 connecting to host at localhost:37625 1970/01/01 00:03:54 checking machine... 1970/01/01 00:03:54 checking revisions... executing program 1970/01/01 00:03:57 testing simple program... executing program executing program executing program executing program executing program executing program executing program executing program [ 264.730064][ T3090] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 264.786837][ T3090] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link executing program executing program [ 269.308744][ T3090] device hsr_slave_0 entered promiscuous mode [ 269.320574][ T3090] device hsr_slave_1 entered promiscuous mode executing program [ 271.928899][ T3090] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 272.022632][ T3090] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 272.097405][ T3090] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 272.145297][ T3090] netdevsim netdevsim0 netdevsim3: renamed from eth3 executing program [ 276.530949][ T3090] 8021q: adding VLAN 0 to HW filter on device bond0 [ 276.852235][ T1951] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 276.911184][ T1951] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready executing program [ 278.809203][ T3291] Unable to handle kernel NULL pointer dereference at virtual address 0000000000000c48 [ 278.811802][ T3291] Oops [#1] [ 278.812786][ T3291] Modules linked in: [ 278.813755][ T3291] CPU: 1 PID: 3291 Comm: modprobe Not tainted 5.14.0-syzkaller #0 [ 278.814939][ T3291] Hardware name: riscv-virtio,qemu (DT) [ 278.816037][ T3291] epc : __kmalloc+0xce/0x388 [ 278.817049][ T3291] ra : __kmalloc+0x6e/0x388 [ 278.817971][ T3291] epc : ffffffff803e3568 ra : ffffffff803e3508 sp : ffffffe006da3ab0 [ 278.819075][ T3291] gp : ffffffff83f967d8 tp : ffffffe00c68df00 t0 : ffffffe006da3c58 [ 278.819992][ T3291] t1 : 0000000000000001 t2 : 0000000000000018 s0 : ffffffe006da3b50 [ 278.820842][ T3291] s1 : ffffffe005602140 a0 : 0000000000000000 a1 : ffffffe006da3e9c [ 278.821867][ T3291] a2 : 1ffffffff07aa51f a3 : 0000000000000c48 a4 : 0000000000000000 [ 278.822873][ T3291] a5 : ffffffff82e4b3b0 a6 : 0000000000f00000 a7 : ffffffff8038ca52 [ 278.824132][ T3291] s2 : ffffffff83f96adc s3 : 0000000000000c40 s4 : 0000000000001000 [ 278.825374][ T3291] s5 : ffffffff8080ab12 s6 : ffffffff83f9a0d0 s7 : 0000000000000000 [ 278.826322][ T3291] s8 : 0000000000000c40 s9 : 0000000000000001 s10: ffffffe009ddf6e0 [ 278.827233][ T3291] s11: 0000003fcde82000 t3 : b62b3bae7aa96200 t4 : ffffffc400db4781 [ 278.828242][ T3291] t5 : ffffffc400db478b t6 : 0000000000000005 [ 278.829077][ T3291] status: 0000000000000120 badaddr: 0000000000000c48 cause: 000000000000000d [ 278.830131][ T3291] [] __kmalloc+0xce/0x388 [ 278.831201][ T3291] [] tomoyo_realpath_from_path+0x9c/0x3f4 [ 278.832246][ T3291] [] tomoyo_path_perm+0x11e/0x2d8 [ 278.833408][ T3291] [] tomoyo_inode_getattr+0x1e/0x28 [ 278.834284][ T3291] [] security_inode_getattr+0x82/0xc6 [ 278.835017][ T3291] [] vfs_fstat+0x54/0xc8 [ 278.835709][ T3291] [] __do_sys_newfstat+0x34/0x88 [ 278.836533][ T3291] [] sys_newfstat+0x22/0x2e [ 278.837345][ T3291] [] ret_from_syscall+0x0/0x2 [ 278.839868][ T3291] ---[ end trace 34113d47542237fa ]--- [ 278.841165][ T3291] Kernel panic - not syncing: Fatal exception [ 278.842179][ T3291] SMP: stopping secondary CPUs [ 278.843694][ T3291] Rebooting in 86400 seconds.. VM DIAGNOSIS: 10:04:48 Registers: info registers vcpu 0 pc ffffffff8000533a mhartid 0000000000000000 mstatus 00000000000000a0 mip 0000000000000000 mie 00000000000002aa mideleg 0000000000000222 medeleg 000000000000b109 mtvec 0000000080000540 stvec ffffffff80005004 mepc ffffffff8000e836 sepc ffffffff8000533e mcause 0000000000000009 scause 8000000000000005 mtval 0000000000000000 stval 0000000000000000 x0/zero 0000000000000000 x1/ra ffffffff80005336 x2/sp ffffffff83c03ed0 x3/gp ffffffff83f967d8 x4/tp ffffffff83c39680 x5/t0 ffffffe0063cf6b8 x6/t1 ffffffc40b5b9329 x7/t2 000000000b2ba76f x8/s0 ffffffff83c03ee0 x9/s1 ffffffff83c39680 x10/a0 0000000000000000 x11/a1 00000000000f0000 x12/a2 0000000000000002 x13/a3 ffffffff80005336 x14/a4 ffffffff83c3a680 x15/a5 0000000000000000 x16/a6 0000000000f00000 x17/a7 ffffffe05adc994b x18/s2 0000000000000000 x19/s3 0000000000000001 x20/s4 0000000000000007 x21/s5 ffffffff83f9a3b8 x22/s6 ffffffff83c39680 x23/s7 00000000800130f0 x24/s8 000000000000007f x25/s9 0000000080012010 x26/s10 0000000000000000 x27/s11 0000000000000000 x28/t3 b62b3bae7aa96200 x29/t4 ffffffc40b5b9329 x30/t5 ffffffc40b5b932a x31/t6 0000000000000001 f0/ft0 0000000000000000 f1/ft1 0000000000000000 f2/ft2 0000000000000000 f3/ft3 0000000000000000 f4/ft4 0000000000000000 f5/ft5 0000000000000000 f6/ft6 0000000000000000 f7/ft7 0000000000000000 f8/fs0 0000000000000000 f9/fs1 0000000000000000 f10/fa0 0000000000000000 f11/fa1 0000000000000000 f12/fa2 0000000000000000 f13/fa3 0000000000000000 f14/fa4 0000000000000000 f15/fa5 0000000000000000 f16/fa6 0000000000000000 f17/fa7 0000000000000000 f18/fs2 0000000000000000 f19/fs3 0000000000000000 f20/fs4 0000000000000000 f21/fs5 0000000000000000 f22/fs6 0000000000000000 f23/fs7 0000000000000000 f24/fs8 0000000000000000 f25/fs9 0000000000000000 f26/fs10 0000000000000000 f27/fs11 0000000000000000 f28/ft8 0000000000000000 f29/ft9 0000000000000000 f30/ft10 0000000000000000 f31/ft11 0000000000000000 info registers vcpu 1 pc ffffffff80abd9f8 mhartid 0000000000000001 mstatus 00000000000001a0 mip 0000000000000000 mie 00000000000002aa mideleg 0000000000000222 medeleg 000000000000b109 mtvec 0000000080000540 stvec ffffffff80005004 mepc ffffffff801fc010 sepc ffffffff803e3568 mcause 8000000000000003 scause 000000000000000d mtval 0000000000000000 stval 0000000000000c48 x0/zero 0000000000000000 x1/ra ffffffff80abda22 x2/sp ffffffe006da3800 x3/gp ffffffff83f967d8 x4/tp ffffffe00c68df00 x5/t0 ffffffff852b2bc7 x6/t1 ffffffc40b5ba914 x7/t2 0000000000000000 x8/s0 ffffffe006da3800 x9/s1 0000000000000000 x10/a0 0000000000000000 x11/a1 ffffffe00c68ef00 x12/a2 0000000000000002 x13/a3 ffffffff8002655a x14/a4 0000000000000003 x15/a5 0000000000000000 x16/a6 0000000000f00000 x17/a7 ffffffe05add48a3 x18/s2 ffffffe00c68df00 x19/s3 000000000000000f x20/s4 0000000000000001 x21/s5 ffffffff83f9a1c0 x22/s6 ffffffe00aaaaa00 x23/s7 ffffffe006da3a90 x24/s8 ffffffe006da3aa0 x25/s9 ffffffe00c68df00 x26/s10 ffffffe009ddf6e0 x27/s11 0000003fcde82000 x28/t3 000000000000004d x29/t4 ffffffc40b5ba914 x30/t5 ffffffc40b5ba915 x31/t6 ffffffe006da3558 f0/ft0 0000000000000000 f1/ft1 0000000000000000 f2/ft2 0000000000000000 f3/ft3 0000000000000000 f4/ft4 0000000000000000 f5/ft5 0000000000000000 f6/ft6 0000000000000000 f7/ft7 0000000000000000 f8/fs0 0000000000000000 f9/fs1 0000000000000000 f10/fa0 0000000000000000 f11/fa1 0000000000000000 f12/fa2 0000000000000000 f13/fa3 0000000000000000 f14/fa4 0000000000000000 f15/fa5 0000000000000000 f16/fa6 0000000000000000 f17/fa7 0000000000000000 f18/fs2 0000000000000000 f19/fs3 0000000000000000 f20/fs4 0000000000000000 f21/fs5 0000000000000000 f22/fs6 0000000000000000 f23/fs7 0000000000000000 f24/fs8 0000000000000000 f25/fs9 0000000000000000 f26/fs10 0000000000000000 f27/fs11 0000000000000000 f28/ft8 0000000000000000 f29/ft9 0000000000000000 f30/ft10 0000000000000000 f31/ft11 0000000000000000