syzkaller login: [ 268.904485][ T1858] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'. [ 268.993676][ T1858] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'. [ 269.066410][ T1858] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'. [ 280.195809][ T1858] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'. Warning: Permanently added '[localhost]:38529' (ECDSA) to the list of known hosts. 1970/01/01 00:05:48 fuzzer started 1970/01/01 00:06:01 dialing manager at localhost:45661 [ 367.153737][ T2025] cgroup: Unknown subsys name 'net' [ 368.425385][ T2025] cgroup: Unknown subsys name 'rlimit' 1970/01/01 00:06:08 syscalls: 2918 1970/01/01 00:06:08 code coverage: enabled 1970/01/01 00:06:08 comparison tracing: ioctl(KCOV_DISABLE) failed: invalid argument 1970/01/01 00:06:08 extra coverage: enabled 1970/01/01 00:06:08 delay kcov mmap: mmap returned an invalid pointer 1970/01/01 00:06:08 setuid sandbox: enabled 1970/01/01 00:06:08 namespace sandbox: enabled 1970/01/01 00:06:08 Android sandbox: /sys/fs/selinux/policy does not exist 1970/01/01 00:06:08 fault injection: enabled 1970/01/01 00:06:08 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled 1970/01/01 00:06:08 net packet injection: enabled 1970/01/01 00:06:08 net device setup: enabled 1970/01/01 00:06:08 concurrency sanitizer: /sys/kernel/debug/kcsan does not exist 1970/01/01 00:06:08 devlink PCI setup: PCI device 0000:00:10.0 is not available 1970/01/01 00:06:08 NIC VF setup: PCI device 0000:00:11.0 is not available 1970/01/01 00:06:08 USB emulation: enabled 1970/01/01 00:06:08 hci packet injection: /dev/vhci does not exist 1970/01/01 00:06:08 wifi device emulation: /sys/class/mac80211_hwsim/ does not exist 1970/01/01 00:06:08 802.15.4 emulation: /sys/bus/platform/devices/mac802154_hwsim does not exist 1970/01/01 00:06:08 fetching corpus: 0, signal 0/2000 (executing program) 1970/01/01 00:06:13 fetching corpus: 50, signal 29950/33522 (executing program) 1970/01/01 00:06:16 fetching corpus: 100, signal 43743/48818 (executing program) 1970/01/01 00:06:19 fetching corpus: 150, signal 53355/59781 (executing program) 1970/01/01 00:06:21 fetching corpus: 200, signal 58122/65966 (executing program) 1970/01/01 00:06:24 fetching corpus: 250, signal 63916/73067 (executing program) 1970/01/01 00:06:27 fetching corpus: 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signal 260797/266306 (executing program) 1970/01/01 00:16:50 fetching corpus: 12709, signal 261113/266306 (executing program) 1970/01/01 00:16:52 fetching corpus: 12759, signal 261399/266306 (executing program) 1970/01/01 00:16:56 fetching corpus: 12808, signal 261653/266308 (executing program) 1970/01/01 00:17:01 fetching corpus: 12858, signal 261980/266308 (executing program) 1970/01/01 00:17:05 fetching corpus: 12908, signal 262200/266403 (executing program) 1970/01/01 00:17:08 fetching corpus: 12957, signal 262425/266403 (executing program) 1970/01/01 00:17:10 fetching corpus: 13007, signal 262643/266403 (executing program) 1970/01/01 00:17:12 fetching corpus: 13055, signal 262958/266403 (executing program) 1970/01/01 00:17:13 fetching corpus: 13095, signal 263115/266403 (executing program) 1970/01/01 00:17:13 fetching corpus: 13095, signal 263115/266403 (executing program) 1970/01/01 00:18:49 starting 2 fuzzer processes 00:18:49 executing program 0: r0 = openat(0xffffffffffffff9c, &(0x7f0000000040)='./file1\x00', 0x10e042, 0x0) r1 = openat(0xffffffffffffff9c, &(0x7f0000000040)='./file1\x00', 0x42, 0x0) fallocate(r1, 0x0, 0x0, 0x400) preadv2(r0, &(0x7f0000000600)=[{&(0x7f0000000200)=""/52, 0x34}], 0x1, 0x0, 0x0, 0x8) 00:18:49 executing program 1: r0 = openat$rtc(0xffffffffffffff9c, &(0x7f0000000080), 0x0, 0x0) ioctl$RTC_ALM_SET(r0, 0x40187013, &(0x7f0000000140)={0x0, 0xffffffff}) [ 1149.066212][ T2044] Kernel panic - not syncing: corrupted stack end detected inside scheduler [ 1149.068027][ T2044] CPU: 0 PID: 2044 Comm: syz-executor.0 Not tainted 5.17.0-rc1-syzkaller-00002-g0966d385830d #0 [ 1149.069166][ T2044] Hardware name: riscv-virtio,qemu (DT) [ 1149.070563][ T2044] Call Trace: [ 1149.071867][ T2044] [] dump_backtrace+0x2e/0x3c [ 1149.073388][ T2044] [] show_stack+0x34/0x40 [ 1149.074293][ T2044] [] dump_stack_lvl+0xe4/0x150 [ 1149.075165][ T2044] [] dump_stack+0x1c/0x24 [ 1149.076097][ T2044] [] panic+0x24a/0x634 [ 1149.076865][ T2044] [] schedule+0x0/0x14c [ 1149.077689][ T2044] [] preempt_schedule_common+0x4e/0xde [ 1149.078694][ T2044] [] preempt_schedule+0x34/0x36 [ 1149.079551][ T2044] [] __kernfs_new_node+0x5e8/0x5f2 [ 1149.080475][ T2044] [] kernfs_new_node+0x66/0xbe [ 1149.081244][ T2044] [] __kernfs_create_file+0x4e/0x1e8 [ 1149.083231][ T2044] [] sysfs_add_file_mode_ns+0x138/0x254 [ 1149.084469][ T2044] [] internal_create_group+0x274/0x722 [ 1149.085665][ T2044] [] internal_create_groups.part.0+0x64/0xe8 [ 1149.086950][ T2044] [] sysfs_create_groups+0x2c/0x48 [ 1149.088112][ T2044] [] device_add+0xee4/0x129e [ 1149.089305][ T2044] [] netdev_register_kobject+0xcc/0x208 [ 1149.090534][ T2044] [] register_netdevice+0x8ee/0xc6a [ 1149.092554][ T2044] [] vxcan_newlink+0x31e/0x556 [ 1149.093845][ T2044] [] __rtnl_newlink+0xc16/0xfa0 [ 1149.095097][ T2044] [] rtnl_newlink+0x60/0x8c [ 1149.096287][ T2044] [] rtnetlink_rcv_msg+0x338/0x9a0 [ 1149.097498][ T2044] [] netlink_rcv_skb+0xf8/0x2be [ 1149.098724][ T2044] [] rtnetlink_rcv+0x26/0x30 [ 1149.099871][ T2044] [] netlink_unicast+0x40e/0x5fe [ 1149.101096][ T2044] [] netlink_sendmsg+0x4e0/0x994 [ 1149.102965][ T2044] [] sock_sendmsg+0xa0/0xc4 [ 1149.104143][ T2044] [] __sys_sendto+0x1f2/0x2e0 [ 1149.105251][ T2044] [] sys_sendto+0x3e/0x52 [ 1149.106427][ T2044] [] ret_from_syscall+0x0/0x2 [ 1149.107888][ T2044] SMP: stopping secondary CPUs [ 1149.110471][ T2044] Rebooting in 86400 seconds.. VM DIAGNOSIS: 07:51:53 Registers: info registers vcpu 0 pc ffffffff8272e23e mhartid 0000000000000000 mstatus 00000000000000a0 mip 0000000000000000 mie 00000000000002aa mideleg 0000000000000222 medeleg 000000000000b109 mtvec 0000000080000540 stvec ffffffff800055d4 mepc ffffffff8000f97e sepc 00007fffb01ecd94 mcause 0000000000000009 scause 0000000000000008 mtval 0000000000000000 stval 0000000000000000 x0/zero 0000000000000000 x1/ra ffffffff801131ae x2/sp ffffaf800ee12b00 x3/gp ffffffff85863ac0 x4/tp ffffaf800e68e100 x5/t0 ffffaf800c4332a8 x6/t1 f4f841069be8d400 x7/t2 cf6786123e3e38a3 x8/s0 ffffaf800ee12cd0 x9/s1 ffffaf805a9f5c80 x10/a0 0000000000000000 x11/a1 00000000000f0000 x12/a2 1ffff5f00b53ebc1 x13/a3 ffffffff8273205a x14/a4 0000000000000003 x15/a5 0000000000000000 x16/a6 0000000000f00000 x17/a7 ffffffff8273200e x18/s2 ffffaf800c433268 x19/s3 0000000000000002 x20/s4 ffffaf805a9f5e60 x21/s5 ffffaf805a9f5e10 x22/s6 0000000000000000 x23/s7 ffffaf805a9f5c80 x24/s8 ffffaf805a9f5c88 x25/s9 ffffaf805a9f5e08 x26/s10 00000000000001f4 x27/s11 00000000000003e8 x28/t3 fffffffff3f3f300 x29/t4 ffffffff80112282 x30/t5 1ffff5f001dc2544 x31/t6 ffffaf800c6410cc 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 ffffffff80200f00 mhartid 0000000000000001 mstatus 00000000000000a0 mip 00000000000000a0 mie 000000000000022a mideleg 0000000000000222 medeleg 000000000000b109 mtvec 0000000080000540 stvec ffffffff800055d4 mepc ffffffff80dcc32e sepc ffffffff804757c0 mcause 8000000000000007 scause 8000000000000009 mtval 0000000000000000 stval 0000000000000000 x0/zero 0000000000000000 x1/ra ffffffff801a770e x2/sp ffffaf80216219d0 x3/gp ffffffff85863ac0 x4/tp ffffaf800b679840 x5/t0 ffffffff86bcb657 x6/t1 fffff5ef042c43dc x7/t2 0000000000000000 x8/s0 ffffaf80216219d0 x9/s1 ffffffff84515424 x10/a0 0000000000000000 x11/a1 00000000000f0000 x12/a2 0000000000000002 x13/a3 ffffffff801a7778 x14/a4 0000000000000003 x15/a5 0000000000000000 x16/a6 ffffaf8021621c6e x17/a7 fffffffff1f1f1f1 x18/s2 ffffaf8021621c60 x19/s3 000000000000007a x20/s4 1ffff5f0042c4354 x21/s5 ffffffff85889780 x22/s6 0000000000000000 x23/s7 0000000000000001 x24/s8 ffffffff8000a228 x25/s9 ffffffff85889780 x26/s10 1ffff5f0042c4380 x27/s11 ffffaf8021621fe0 x28/t3 1ffff5f0042c4338 x29/t4 fffff5ef042c431c x30/t5 fffff5ef042c431d x31/t6 ffffaf80216221a2 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