last executing test programs: 8m40.129185944s ago: executing program 1 (id=82): r0 = shmget$private(0x0, 0x3000, 0x0, &(0x7f0000ffd000/0x3000)=nil) shmctl$IPC_RMID(r0, 0x0) shmat(r0, &(0x7f0000fff000/0x1000)=nil, 0x0) shmat(r0, &(0x7f0000ffb000/0x3000)=nil, 0x3000) 8m32.24823369s ago: executing program 1 (id=84): r0 = socket(0x18, 0x3, 0x0) setsockopt$sock_int(r0, 0xffff, 0x800, &(0x7f0000000080)=0x4, 0x4) setsockopt(r0, 0x1000000029, 0x24, &(0x7f0000000000)="5ab7776a", 0x4) syz_emit_ethernet(0x3e, &(0x7f0000000040)={@broadcast, @broadcast, @val, {@ipv6}}, 0x0) 8m27.05932733s ago: executing program 1 (id=87): r0 = openat(0xffffffffffffff9c, &(0x7f000000c380)='./file0\x00', 0x20842, 0x63) bpf$MAP_CREATE(0x0, &(0x7f00000000c0)=@base={0x1f, 0x0, 0x0, 0x1000, 0x0, 0x1}, 0x50) mremap(&(0x7f0000ffe000/0x2000)=nil, 0x2000, 0x2000, 0x3, &(0x7f0000ffc000/0x2000)=nil) mmap(&(0x7f0000ffc000/0x1000)=nil, 0x1000, 0x1, 0x10012, r0, 0x0) 8m21.449885777s ago: executing program 1 (id=88): r0 = socket(0x2, 0x3, 0x0) close(r0) r1 = socket(0x18, 0x2, 0x0) close(r1) r2 = socket(0x2, 0x3, 0x0) close(r2) r3 = socket(0x18, 0x2, 0x0) setsockopt(r3, 0x1000000029, 0x33, &(0x7f0000000080)="031000086941e7c5ce5876778f181b12184c256b1ca6f583b03f959b5253027d08b90779da6a56ed10c81a19096dc2baca0179cdd9967a674820f89c4daa330fee01c76728490d1851d4ab60059f6a3f7cc45ac10500000078bbf169d0632f4ce57a508bc82acd00000000140e0343395b00737a4a00000084fc604fd6642787b31558a39bd20000", 0x88) setsockopt(r2, 0x1000000029, 0x32, &(0x7f0000000140)="b211d7170d816685c8e360f2fa41c1a0946988b272d2dd3dc90142a84231a746e337b372e93320cff6669cbe7868de45ed3fc33719ca6df71ecec8a918458b2c10a1f8c66653b276e180e9cb9b21f9982230f575295d48889c9a920796b2dd92fc8575680b37ba955d2c15e6d7c9198ed900ab006ddfb67869b51a2216114d1ece85f593e74035f5bc054eb1dbddf42a", 0x90) semctl$IPC_SET(0x0, 0x0, 0x1, &(0x7f00000000c0)={{0x2, 0x0, 0xffffffffffffffff, 0x0, 0x0, 0x40, 0x200}, 0x5, 0x8001, 0x24b83c97}) r4 = socket(0x18, 0x3, 0x0) connect$unix(r4, &(0x7f00000000c0)=@abs={0x682eb13985c518e6, 0x7}, 0x1c) getsockname$inet(r4, &(0x7f00000000c0), &(0x7f0000000000)=0xffffffffffffff35) connect$unix(r1, &(0x7f00000000c0)=@abs={0x682eb13985c518e6, 0x7}, 0x1c) setsockopt(r0, 0x1000000029, 0x31, &(0x7f0000000000)="b211d7170d816685c8e360f2fa41c1a0946988b272d2dd3dc90142a84231a746e337b372e93320cff6669cbe7868de45ed3fc33719ca6df71ecec8a918458b2c10a1f8c66653b276e180e9cb9b21f9982230f575295d48889c9a920796b2dd92fc8575680b37ba955d2c15e6d7c9198ed900ab006ddfb67869b51a2216114d1ece85f593e74035f5bc054eb1dbddf42a", 0x90) writev(r0, &(0x7f0000000680)=[{0x0}], 0x1) 7m56.408181776s ago: executing program 1 (id=91): r0 = socket$inet6(0xa, 0x1, 0x0) bind$inet6(r0, &(0x7f0000000040)={0xa, 0x4e20, 0xea2, @ipv4={'\x00', '\xff\xff', @local}, 0x7}, 0x1c) connect$inet6(r0, &(0x7f0000000000)={0xa, 0x4e22, 0x380000, @remote, 0x3}, 0x1c) connect$inet6(r0, &(0x7f0000000240)={0xa, 0x4e22, 0x0, @empty, 0x6}, 0x1c) 7m46.57478756s ago: executing program 1 (id=93): prlimit64(0x0, 0xe, &(0x7f0000000140)={0x8, 0x88}, 0x0) sched_setscheduler(0x0, 0x1, &(0x7f0000000300)=0x7) r0 = bpf$MAP_CREATE(0x0, &(0x7f0000003940)=ANY=[@ANYBLOB="210000000000000000000000000010000004"], 0x48) mmap(&(0x7f0000000000/0x600000)=nil, 0x600000, 0x3000001, 0x11, r0, 0x0) msgctl$IPC_SET(0x0, 0x1, &(0x7f0000258f88)={{0xffffffffffffffff, 0x0, 0x0, 0x0, 0x0, 0x96, 0x200}, 0x0, 0x0, 0x0, 0x80004, 0x0, 0x0, 0xffffffffffffffff}) prctl$PR_SET_SYSCALL_USER_DISPATCH_ON(0x3b, 0x1, 0x0, 0x972, &(0x7f0000006680)) openat(0xffffffffffffff9c, &(0x7f000000c380)='./file0\x00', 0x20842, 0x0) timer_create(0x0, &(0x7f0000533fa0)={0x0, 0x21, 0x800000000004}, 0x0) 6m59.131360095s ago: executing program 32 (id=93): prlimit64(0x0, 0xe, &(0x7f0000000140)={0x8, 0x88}, 0x0) sched_setscheduler(0x0, 0x1, &(0x7f0000000300)=0x7) r0 = bpf$MAP_CREATE(0x0, &(0x7f0000003940)=ANY=[@ANYBLOB="210000000000000000000000000010000004"], 0x48) mmap(&(0x7f0000000000/0x600000)=nil, 0x600000, 0x3000001, 0x11, r0, 0x0) msgctl$IPC_SET(0x0, 0x1, &(0x7f0000258f88)={{0xffffffffffffffff, 0x0, 0x0, 0x0, 0x0, 0x96, 0x200}, 0x0, 0x0, 0x0, 0x80004, 0x0, 0x0, 0xffffffffffffffff}) prctl$PR_SET_SYSCALL_USER_DISPATCH_ON(0x3b, 0x1, 0x0, 0x972, &(0x7f0000006680)) openat(0xffffffffffffff9c, &(0x7f000000c380)='./file0\x00', 0x20842, 0x0) timer_create(0x0, &(0x7f0000533fa0)={0x0, 0x21, 0x800000000004}, 0x0) 1m10.698698743s ago: executing program 0 (id=123): r0 = syz_open_procfs(0xffffffffffffffff, &(0x7f0000000100)='fd\x00') exit(0x7) close_range(0xffffffffffffffff, 0xffffffffffffffff, 0x2) statx(r0, 0x0, 0x1000, 0x10, 0x0) 56.699818199s ago: executing program 0 (id=124): r0 = socket$inet6_tcp(0xa, 0x1, 0x0) close(r0) socket$inet6_mptcp(0xa, 0x1, 0x106) bind$inet6(r0, &(0x7f0000000040)={0xa, 0x4e22, 0x0, @empty}, 0x1c) listen(r0, 0x0) r1 = socket$inet_mptcp(0x2, 0x1, 0x106) setsockopt$sock_int(r1, 0x1, 0x8, 0x0, 0x0) connect$inet(r1, &(0x7f0000000000)={0x2, 0x4e22, @empty}, 0x10) r2 = accept(r0, 0x0, 0x0) shutdown(r2, 0x1) sendto$inet(r1, &(0x7f0000000080)="ab", 0x1, 0x8855, 0x0, 0x0) 33.387357565s ago: executing program 0 (id=125): prctl$PR_SET_MM(0x23, 0xf, &(0x7f0000ffc000/0x4000)=nil) 25.896234675s ago: executing program 0 (id=126): mkdirat(0xffffffffffffff9c, &(0x7f0000000200)='./file0\x00', 0x0) r0 = open(&(0x7f0000000c00)='./file0\x00', 0x0, 0x0) mkdirat(r0, &(0x7f0000000340)='\x13\x13w\xc5\xfc5\xd4\x14T\xd5\xd4\x1d)\xad\x1a`)Y\x81F\xe6\xbe\x16nA\xad\r\xbd@T\x03<\x9f3\xbb\xda\x82$\xa2\xf3\xd7r\xe7cnH\xb3<\xbfp\x83r\xe8\xf1\xb9\x93>\xc5\x12wC\xbe\"\x06 \x9e\xf0-\xf9\xcb\xf2\xf6\xe8\x80\xd38/\x00', 0x0) r1 = open(&(0x7f0000000300)='.\x00', 0x0, 0x0) renameat2(r0, &(0x7f0000000040)='\x13\x13w\xc5\xfc5\xd4\x14T\xd5\xd4\x1d)\xad\x1a`)Y\x81F\xe6\xbe\x16nA\xad\r\xbd@T\x03<\x9f3\xbb\xda\x82$\xa2\xf3\xd7r\xe7cnH\xb3<\xbfp\x83r\xe8\xf1\xb9\x93>\xc5\x12wC\xbe\"\x06 \x9e\xf0-\xf9\xcb\xf2\xf6\xe8\x80\xd38/\x00', r1, &(0x7f00000002c0)='./file0\x00', 0x2) 15.660213275s ago: executing program 0 (id=127): r0 = syz_open_procfs(0xffffffffffffffff, &(0x7f0000000100)='fd\x00') exit(0x7) statx(r0, 0x0, 0x1000, 0x10, 0x0) 0s ago: executing program 0 (id=128): r0 = openat$comedi(0xffffffffffffff9c, &(0x7f0000000080)='/dev/comedi3\x00', 0x400, 0x0) ioctl$COMEDI_DEVCONFIG(r0, 0x40946400, &(0x7f00000000c0)={'comedi_parport\x00', [0x4f23, 0x5, 0x2, 0x4000401, 0x1, 0x0, 0xfff, 0x5c952399, 0x5, 0x3ff, 0x802, 0x8, 0x10001, 0x1, 0x9, 0xe1cb, 0x6, 0x401, 0x3, 0x395, 0x80000089, 0x3, 0x32, 0xfffffff5, 0xffffeadb, 0x7, 0x3c, 0x8, 0x3, 0x8000000, 0x2ec0]}) kernel console output (not intermixed with test programs): Warning: Permanently added '[localhost]:42908' (ED25519) to the list of known hosts. syzkaller login: [ 727.097711][ T3236] cgroup: Unknown subsys name 'net' [ 727.770709][ T3236] cgroup: Unknown subsys name 'cpuset' [ 727.976678][ T3236] cgroup: Unknown subsys name 'rlimit' Setting up swapspace version 1, size = 127995904 bytes [ 832.254618][ T3236] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k [ 1002.236975][ T3247] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 1002.516714][ T3247] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 1007.980835][ T3250] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 1008.273910][ T3250] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 1022.767985][ T3247] hsr_slave_0: entered promiscuous mode [ 1022.824784][ T3247] hsr_slave_1: entered promiscuous mode [ 1025.757199][ T3250] hsr_slave_0: entered promiscuous mode [ 1025.788491][ T3250] hsr_slave_1: entered promiscuous mode [ 1025.838555][ T3250] debugfs: 'hsr0' already exists in 'hsr' [ 1025.851272][ T3250] Cannot create hsr debugfs directory [ 1039.538697][ T3247] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 1039.777631][ T3247] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 1040.058290][ T3247] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 1040.557121][ T3247] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 1043.255960][ T3250] netdevsim netdevsim1 netdevsim0: renamed from eth0 [ 1043.627715][ T3250] netdevsim netdevsim1 netdevsim1: renamed from eth1 [ 1044.864363][ T3250] netdevsim netdevsim1 netdevsim2: renamed from eth2 [ 1045.250793][ T3250] netdevsim netdevsim1 netdevsim3: renamed from eth3 [ 1068.420989][ T3247] 8021q: adding VLAN 0 to HW filter on device bond0 [ 1077.627430][ T3250] 8021q: adding VLAN 0 to HW filter on device bond0 [ 1144.077365][ T3247] veth0_vlan: entered promiscuous mode [ 1145.178609][ T3247] veth1_vlan: entered promiscuous mode [ 1148.729734][ T3247] veth0_macvtap: entered promiscuous mode [ 1149.118905][ T3247] veth1_macvtap: entered promiscuous mode [ 1151.465298][ T12] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 1151.469810][ T12] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 1151.608343][ T12] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 1151.654502][ T12] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 1159.151258][ T3250] veth0_vlan: entered promiscuous mode [ 1159.477465][ T3247] soft_limit_in_bytes is deprecated and will be removed. Please report your usecase to linux-mm@kvack.org if you depend on this functionality. [ 1159.840887][ T3250] veth1_vlan: entered promiscuous mode [ 1162.029517][ T3250] veth0_macvtap: entered promiscuous mode [ 1162.760552][ T3250] veth1_macvtap: entered promiscuous mode [ 1165.970699][ T57] netdevsim netdevsim1 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 1166.116046][ T57] netdevsim netdevsim1 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 1166.148744][ T57] netdevsim netdevsim1 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 1166.559164][ T57] netdevsim netdevsim1 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 1462.540048][ T4122] netlink: 16 bytes leftover after parsing attributes in process `syz.0.90'. [ 1510.769219][ T4136] netlink: 16 bytes leftover after parsing attributes in process `syz.0.96'. [ 1544.309030][ T4145] netlink: 16 bytes leftover after parsing attributes in process `syz.0.101'. [ 1593.709421][ T4162] netlink: 16 bytes leftover after parsing attributes in process `syz.0.105'. [ 1615.220750][ T4186] pim6reg: entered allmulticast mode [ 1675.119886][ T4270] netlink: 16 bytes leftover after parsing attributes in process `syz.0.109'. [ 1687.928433][ T4112] netdevsim netdevsim1 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 1692.438443][ T4112] netdevsim netdevsim1 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 1693.267124][ T4147] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 1693.688417][ T4147] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 1695.176157][ T4112] netdevsim netdevsim1 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 1698.895749][ T4112] netdevsim netdevsim1 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 1718.182920][ C0] vcan0: j1939_tp_rxtimer: 0xffffaf802a439400: rx timeout, send abort [ 1718.693507][ C0] vcan0: j1939_tp_rxtimer: 0xffffaf802a439400: abort rx timeout. Force session deactivation [ 1718.705212][ C0] vcan0: j1939_tp_rxtimer: 0xffffaf802a439800: rx timeout, send abort [ 1719.208287][ C0] vcan0: j1939_tp_rxtimer: 0xffffaf802a439800: abort rx timeout. Force session deactivation [ 1720.191100][ T3767] usb 1-1: new high-speed USB device number 2 using dummy_hcd [ 1721.186136][ T3767] usb 1-1: config 0 has no interfaces? [ 1721.188844][ T3767] usb 1-1: New USB device found, idVendor=047f, idProduct=ffff, bcdDevice= 0.00 [ 1721.190308][ T3767] usb 1-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 1721.691898][ T3767] usb 1-1: config 0 descriptor?? [ 1725.186924][ T4112] bond0 (unregistering): (slave bond_slave_0): Releasing backup interface [ 1725.396983][ C1] vcan0: j1939_tp_rxtimer: 0xffffaf8020d23400: rx timeout, send abort [ 1725.846006][ T4112] bond0 (unregistering): (slave bond_slave_1): Releasing backup interface [ 1725.900879][ C1] vcan0: j1939_tp_rxtimer: 0xffffaf8020d23400: abort rx timeout. Force session deactivation [ 1725.909558][ C1] vcan0: j1939_tp_rxtimer: 0xffffaf8020d23800: rx timeout, send abort [ 1726.265255][ T4112] bond0 (unregistering): Released all slaves [ 1726.415953][ C1] vcan0: j1939_tp_rxtimer: 0xffffaf8020d23800: abort rx timeout. Force session deactivation [ 1726.977737][ T3866] usb 1-1: USB disconnect, device number 2 [ 1728.145596][ T4112] hsr_slave_0: left promiscuous mode [ 1728.253192][ T4112] hsr_slave_1: left promiscuous mode [ 1729.053865][ T4112] veth1_macvtap: left promiscuous mode [ 1729.057468][ T4112] veth0_macvtap: left promiscuous mode [ 1729.066008][ T4112] veth1_vlan: left promiscuous mode [ 1729.070371][ T4112] veth0_vlan: left promiscuous mode [ 1739.889115][ T3859] usb 1-1: new high-speed USB device number 3 using dummy_hcd [ 1740.459995][ T3859] usb 1-1: config 27 has an invalid descriptor of length 0, skipping remainder of the config [ 1740.959172][ T3859] usb 1-1: config 27 interface 0 altsetting 0 has an invalid descriptor for endpoint zero, skipping [ 1740.968602][ T3859] usb 1-1: config 27 interface 0 altsetting 0 has 1 endpoint descriptor, different from the interface descriptor's value: 2 [ 1740.994723][ T3859] usb 1-1: New USB device found, idVendor=0582, idProduct=0014, bcdDevice=bb.9d [ 1740.997213][ T3859] usb 1-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 1741.859662][ T3859] usb 1-1: Quirk or no altset; falling back to MIDI 1.0 [ 1744.050095][ T3859] snd-usb-audio 1-1:27.0: probe with driver snd-usb-audio failed with error -2 [ 1744.358365][ T3859] usb 1-1: USB disconnect, device number 3 [ 1777.261786][ T804] usb 1-1: new high-speed USB device number 4 using dummy_hcd [ 1777.927373][ T804] usb 1-1: config 0 has an invalid descriptor of length 0, skipping remainder of the config [ 1778.734296][ T804] usb 1-1: New USB device found, idVendor=045e, idProduct=0283, bcdDevice=99.0b [ 1778.737125][ T804] usb 1-1: New USB device strings: Mfr=1, Product=2, SerialNumber=3 [ 1778.739060][ T804] usb 1-1: Product: syz [ 1778.740550][ T804] usb 1-1: Manufacturer: syz [ 1778.746146][ T804] usb 1-1: SerialNumber: syz [ 1779.154414][ T804] usb 1-1: config 0 descriptor?? [ 1781.458670][ T804] snd-usb-audio 1-1:0.0: probe with driver snd-usb-audio failed with error -22 [ 1781.720538][ T804] usb 1-1: USB disconnect, device number 4 [ 1810.864908][ T4147] hsr_slave_0: entered promiscuous mode [ 1811.540034][ T4147] hsr_slave_1: entered promiscuous mode [ 1811.701389][ T4147] debugfs: 'hsr0' already exists in 'hsr' [ 1811.725934][ T4147] Cannot create hsr debugfs directory [ 1840.419032][ T4147] netdevsim netdevsim2 netdevsim0: renamed from eth0 [ 1841.116900][ T4147] netdevsim netdevsim2 netdevsim1: renamed from eth1 [ 1841.571170][ T4147] netdevsim netdevsim2 netdevsim2: renamed from eth2 [ 1842.715047][ T4147] netdevsim netdevsim2 netdevsim3: renamed from eth3 [ 1895.400980][ T4147] 8021q: adding VLAN 0 to HW filter on device bond0 [ 1950.961930][ C0] ------------[ cut here ]------------ [ 1950.962683][ C0] WARNING: [irq_settings_is_per_cpu_devid(desc)] kernel/irq/manage.c:2125 at request_threaded_irq+0x320/0x38c, CPU#0: syz.0.128/4585 [ 1950.965740][ C0] Modules linked in: [ 1950.967377][ C0] CPU: 0 UID: 0 PID: 4585 Comm: syz.0.128 Not tainted syzkaller #0 PREEMPT [ 1950.968438][ C0] Hardware name: riscv-virtio,qemu (DT) [ 1950.969177][ C0] epc : request_threaded_irq+0x320/0x38c [ 1950.969932][ C0] ra : request_threaded_irq+0x320/0x38c [ 1950.970551][ C0] epc : ffffffff8032d750 ra : ffffffff8032d750 sp : ffff8f800d677810 [ 1950.971061][ C0] gp : ffffffff89f9df20 tp : ffffaf8011f1b500 t0 : ffffffff86391c0a [ 1950.971521][ C0] t1 : ffffffff9136c6e0 t2 : ffffffff8016a132 s0 : ffff8f800d677870 [ 1950.972059][ C0] s1 : 0000000000000000 a0 : 0000000000000005 a1 : 0000000000000000 [ 1950.972482][ C0] a2 : 0000000000080000 a3 : ffffffff8032d750 a4 : ffff8f800496b7c8 [ 1950.972935][ C0] a5 : 00000000000127c8 a6 : 0000000000000003 a7 : ffffffff86660460 [ 1950.973413][ C0] s2 : 0000000000200000 s3 : ffffaf8011e8d000 s4 : 0000000000000005 [ 1950.973951][ C0] s5 : ffffffff84b56ef4 s6 : ffffaf801ce6a800 s7 : 0000000000000000 [ 1950.974406][ C0] s8 : ffffffff87597e60 s9 : 0000000000020000 s10: ffffaf801ce6a800 [ 1950.974900][ C0] s11: 0000000000000001 t3 : 0000000000000001 t4 : 0000000000001fff [ 1950.975305][ C0] t5 : 00000000000000c8 t6 : 0000000000000002 ssp : 0000000000000000 [ 1950.975736][ C0] status: 0000000200000120 badaddr: ffffffff8032d750 cause: 0000000000000003 [ 1950.976343][ C0] [] request_threaded_irq+0x320/0x38c [ 1950.977188][ C0] [] parport_attach+0x780/0xb14 [ 1950.977982][ C0] [] comedi_device_attach+0x350/0x7ec [ 1950.978694][ C0] [] do_devconfig_ioctl+0x1a2/0x654 [ 1950.979293][ C0] [] comedi_unlocked_ioctl+0x338/0x2c10 [ 1950.979953][ C0] [] __riscv_sys_ioctl+0x17c/0x1e4 [ 1950.980709][ C0] [] syscall_handler+0x92/0x114 [ 1950.982047][ C0] [] do_trap_ecall_u+0x3d2/0x58c [ 1950.983341][ C0] [] handle_exception+0x15e/0x16a [ 1950.985655][ C0] Kernel panic - not syncing: kernel: panic_on_warn set ... [ 1950.986642][ C0] CPU: 0 UID: 0 PID: 4585 Comm: syz.0.128 Not tainted syzkaller #0 PREEMPT [ 1950.987667][ C0] Hardware name: riscv-virtio,qemu (DT) [ 1950.988037][ C0] Call Trace: [ 1950.988321][ C0] [] dump_backtrace+0x2e/0x3c [ 1950.989148][ C0] [] show_stack+0x30/0x3c [ 1950.989744][ C0] [] dump_stack_lvl+0x114/0x1ac [ 1950.990640][ C0] [] dump_stack+0x1c/0x28 [ 1950.991584][ C0] [] vpanic+0x274/0x684 [ 1950.992310][ C0] [] panic+0xa0/0xa4 [ 1950.992872][ C0] [] check_panic_on_warn+0xc0/0xe4 [ 1950.993511][ C0] [] __warn+0x284/0x498 [ 1950.994046][ C0] [] __report_bug+0x1d4/0x2ac [ 1950.994788][ C0] [] report_bug+0xd8/0x28c [ 1950.995465][ C0] [] handle_break+0x13a/0x30c [ 1950.996172][ C0] [] do_trap_break+0x188/0x358 [ 1950.997019][ C0] [] handle_exception+0x15e/0x16a [ 1950.997864][ C0] [] request_threaded_irq+0x320/0x38c [ 1950.998483][ C0] [] parport_attach+0x780/0xb14 [ 1950.999308][ C0] [] comedi_device_attach+0x350/0x7ec [ 1951.000002][ C0] [] do_devconfig_ioctl+0x1a2/0x654 [ 1951.000610][ C0] [] comedi_unlocked_ioctl+0x338/0x2c10 [ 1951.001269][ C0] [] __riscv_sys_ioctl+0x17c/0x1e4 [ 1951.002079][ C0] [] syscall_handler+0x92/0x114 [ 1951.002822][ C0] [] do_trap_ecall_u+0x3d2/0x58c [ 1951.003608][ C0] [] handle_exception+0x15e/0x16a [ 1951.005048][ C0] SMP: stopping secondary CPUs