last executing test programs: 2m20.592912734s ago: executing program 1 (id=5): r0 = openat$kvm(0xffffffffffffff9c, &(0x7f0000000000), 0x0, 0x0) r1 = ioctl$KVM_CREATE_VM(r0, 0xae01, 0x0) ioctl$KVM_CAP_MANUAL_DIRTY_LOG_PROTECT2(r1, 0x4068aea3, &(0x7f0000000100)={0xa8, 0x0, 0x1}) mmap(&(0x7f0000200000)=nil, 0x200000, 0x3, 0x32, 0xffffffffffffffff, 0x0) ioctl$KVM_SET_USER_MEMORY_REGION(r1, 0x4020ae46, &(0x7f0000000200)={0x0, 0x1, 0x0, 0x200000, 0xfffffffffffffffe}) ioctl$KVM_CLEAR_DIRTY_LOG(r1, 0xc018aec0, &(0x7f0000000300)={0x0, 0x200, 0x0, &(0x7f0000000400)=[0xffffffffffffffff, 0xffffffffffffffff, 0xffffffffffffffff, 0xffffffffffffffff, 0xffffffffffffffff, 0xffffffffffffffff, 0xffffffffffffffff, 0xffffffffffffffff, 0xffffffffffffffff, 0xffffffffffffffff, 0xffffffffffffffff, 0xffffffffffffffff, 0xffffffffffffffff, 0xffffffffffffffff, 0xffffffffffffffff, 0xffffffffffffffff, 0xffffffffffffffff, 0xffffffffffffffff, 0xffffffffffffffff, 0xffffffffffffffff, 0xffffffffffffffff, 0xffffffffffffffff, 0xffffffffffffffff, 0xffffffffffffffff, 0xffffffffffffffff, 0xffffffffffffffff, 0xffffffffffffffff, 0xffffffffffffffff, 0xffffffffffffffff, 0xffffffffffffffff, 0xffffffffffffffff, 0xffffffffffffffff, 0xffffffffffffffff, 0xffffffffffffffff, 0xffffffffffffffff, 0xffffffffffffffff, 0xffffffffffffffff, 0xffffffffffffffff, 0xffffffffffffffff, 0xffffffffffffffff, 0xffffffffffffffff, 0xffffffffffffffff, 0xffffffffffffffff, 0xffffffffffffffff, 0xffffffffffffffff, 0xffffffffffffffff, 0xffffffffffffffff, 0xffffffffffffffff, 0xffffffffffffffff, 0xffffffffffffffff, 0xffffffffffffffff, 0xffffffffffffffff, 0xffffffffffffffff, 0xffffffffffffffff, 0xffffffffffffffff, 0xffffffffffffffff, 0xffffffffffffffff, 0xffffffffffffffff, 0xffffffffffffffff, 0xffffffffffffffff, 0xffffffffffffffff, 0xffffffffffffffff, 0xffffffffffffffff, 0xffffffffffffffff, 0xffffffffffffffff, 0xffffffffffffffff, 0xffffffffffffffff, 0xffffffffffffffff, 0xffffffffffffffff, 0xffffffffffffffff, 0xffffffffffffffff, 0xffffffffffffffff, 0xffffffffffffffff, 0xffffffffffffffff, 0xffffffffffffffff, 0xffffffffffffffff, 0xffffffffffffffff, 0xffffffffffffffff, 0xffffffffffffffff, 0xffffffffffffffff, 0xffffffffffffffff, 0xffffffffffffffff, 0xffffffffffffffff, 0xffffffffffffffff, 0xffffffffffffffff, 0xffffffffffffffff, 0xffffffffffffffff, 0xffffffffffffffff, 0xffffffffffffffff, 0xffffffffffffffff, 0xffffffffffffffff, 0xffffffffffffffff, 0xffffffffffffffff, 0xffffffffffffffff, 0xffffffffffffffff, 0xffffffffffffffff, 0xffffffffffffffff, 0xffffffffffffffff, 0xffffffffffffffff, 0xffffffffffffffff, 0xffffffffffffffff, 0xffffffffffffffff, 0xffffffffffffffff, 0xffffffffffffffff, 0xffffffffffffffff, 0xffffffffffffffff, 0xffffffffffffffff, 0xffffffffffffffff, 0xffffffffffffffff, 0xffffffffffffffff, 0xffffffffffffffff, 0xffffffffffffffff, 0xffffffffffffffff, 0xffffffffffffffff, 0xffffffffffffffff, 0xffffffffffffffff, 0xffffffffffffffff, 0xffffffffffffffff, 0xffffffffffffffff, 0xffffffffffffffff, 0xffffffffffffffff, 0xffffffffffffffff, 0xffffffffffffffff, 0xffffffffffffffff, 0xffffffffffffffff, 0xffffffffffffffff, 0xffffffffffffffff, 0xffffffffffffffff]}) 2m15.290778054s ago: executing program 0 (id=6): mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./ath9k_htc\x00', 0x1ff) r0 = openat(0xffffffffffffff9c, &(0x7f0000000040)='./ath9k_htc/htc_9271-1.4.0.fw\x00', 0x41, 0x1ff) write(r0, &(0x7f0000000100)='1234567890\x00', 0xa) close(r0) r1 = openat(0xffffffffffffff9c, &(0x7f0000000180)='./htc_9271.fw\x00', 0x41, 0x1ff) write(r1, &(0x7f0000000200)='1234567890\x00', 0xa) close(r1) mkdirat(0xffffffffffffff9c, &(0x7f0000000280)='./sys\x00', 0x1ff) mount(0x0, &(0x7f00000002c0)='./sys\x00', &(0x7f0000000300)='sysfs\x00', 0x0, 0x0) r2 = openat(0xffffffffffffff9c, &(0x7f0000000340)='./sys/module/firmware_class/parameters/path\x00', 0x1, 0x0) write(r2, &(0x7f0000000400)='./\x00', 0x3) close(r2) syz_usb_connect_ath9k(0x3, 0x5a, &(0x7f0000000480)={{0x12, 0x1, 0x200, 0xff, 0xff, 0xff, 0x40, 0xcf3, 0x9271, 0x108, 0x1, 0x2, 0x3, 0x1, [{{0x9, 0x2, 0x48}}]}}, 0x0) clock_nanosleep(0x0, 0x0, &(0x7f0000000600)={0x1}, 0x0) r3 = openat(0xffffffffffffff9c, &(0x7f0000000800)='./sys/power/state\x00', 0x1, 0x0) write(r3, &(0x7f0000000880)='freeze\n\x00\x00', 0x7) close(r3) openat$snapshot(0xffffffffffffff9c, &(0x7f0000000700), 0x0, 0x0) 1m44.894982171s ago: executing program 1 (id=7): mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./config\x00', 0x1ff) mount(0x0, &(0x7f0000000100)='./config\x00', &(0x7f0000000200)='configfs\x00', 0x0, 0x0) mkdirat(0xffffffffffffff9c, &(0x7f0000000300)='./config/usb_gadget/g1\x00', 0x1ff) mkdirat(0xffffffffffffff9c, &(0x7f0000000900)='./config/usb_gadget/g1/functions/rndis.usb0\x00', 0x1ff) r0 = openat(0xffffffffffffff9c, &(0x7f0000000100)='./config/usb_gadget/g1/functions/rndis.usb0/ifname\x00', 0x1, 0x0) write(r0, &(0x7f0000000200)='syzkaller0\n', 0xb) r1 = openat(0xffffffffffffff9c, &(0x7f0000000300)='./config/usb_gadget/g1/functions/rndis.usb0/ifname\x00', 0x1, 0x0) write(r1, &(0x7f0000000400)='syzkaller0', 0xa) 1m44.052297414s ago: executing program 0 (id=8): bpf$PROG_LOAD(0x5, &(0x7f00000000c0)={0x1, 0x7, &(0x7f0000000180)=@raw=[@generic={0x72, 0xa, 0x0, 0xfffb, 0x1}, @generic={0x72, 0xa, 0x0, 0xfffa, 0x1}, @generic={0x72, 0xa, 0x0, 0xfff9, 0x1}, @generic={0x15, 0x1, 0x0, 0x1}, @generic={0x72, 0xa, 0x0, 0xfff8, 0x1}, @generic={0xb7}, @generic={0x95}], &(0x7f00000001c0)='GPL\x00', 0x0, 0x0, 0x0, 0x0, 0x0, '\x00', 0x0, @fallback, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0}, 0xa0) 1m25.034720608s ago: executing program 0 (id=9): r0 = openat$ubi_ctrl(0xffffffffffffff9c, &(0x7f0000000000), 0x2, 0x0) ioctl(r0, 0x40186f40, &(0x7f0000000100)="ffffffff00"/24) mkdirat(0xffffffffffffff9c, &(0x7f0000000200)='./sys\x00', 0x1ff) mount(&(0x7f0000000300)=@filename='sysfs\x00', &(0x7f0000000200)='./sys\x00', &(0x7f0000000700)='sysfs\x00', 0x0, &(0x7f0000000400)) nanosleep(&(0x7f0000000800)={0x0, 0xee6b280}, 0x0) r1 = openat(0xffffffffffffff9c, &(0x7f0000000500)='./sys/class/ubi/ubi0\x00', 0x0, 0x0) read(r1, &(0x7f0000000600)=""/256, 0x100) 1m18.218201193s ago: executing program 1 (id=10): r0 = syz_usb_connect(0x0, 0x32, &(0x7f0000000000)=ANY=[@ANYBLOB="12010001000000080f05800100000102000109022000010100a0320904000002ff0000000705810240000007050202400000"], 0x0) syz_usb_control_io(r0, 0x0, &(0x7f0000000300)={0x0, &(0x7f0000000400)={0x0, 0x6, 0xc, "0c2100010101010002000000"}, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0}) nanosleep(&(0x7f0000000500)={0x0, 0x1dcd6500}, 0x0) r1 = syz_open_dev$char_usb(0xc, 0xb4, 0x0) ioctl$TCSETS(r1, 0x5402, &(0x7f0000000600)={0x0, 0x0, 0x4b}) 54.529942301s ago: executing program 1 (id=11): r0 = openat$kvm(0xffffffffffffff9c, &(0x7f0000000000), 0x0, 0x0) r1 = ioctl$KVM_CREATE_VM(r0, 0xae01, 0x0) ioctl$KVM_CAP_HALT_POLL(r1, 0x4068aea3, &(0x7f0000000100)={0xb6, 0x0, 0x2710}) ioctl$KVM_CREATE_IRQCHIP(r1, 0xae60) r2 = ioctl$KVM_CREATE_VCPU(r1, 0xae41, 0x0) r3 = gettid() timer_create(0x0, &(0x7f0000000200)={0x0, 0xe, 0x4, @tid=r3}, &(0x7f0000000300)=0x0) timer_settime(r4, 0x0, &(0x7f0000000400)={{0x0, 0x186a0}, {0x0, 0x186a0}}, 0x0) ioctl$KVM_SET_MP_STATE(r2, 0x4004ae99, &(0x7f0000000500)=0x3) ioctl$KVM_RUN(r2, 0xae80, 0x0) ioctl$KVM_SET_MP_STATE(r2, 0x4004ae99, &(0x7f0000000500)=0x3) ioctl$KVM_RUN(r2, 0xae80, 0x0) 49.363273713s ago: executing program 0 (id=12): r0 = syz_usb_connect(0x0, 0x40, &(0x7f0000000000)=ANY=[@ANYBLOB="1201000200000040720c0c0000010102000109022e0001010080fa09040000040000000007050102000200070581020002000705020200020007058202000200"], 0x0) nanosleep(&(0x7f0000000200)={0x0, 0xbebc200}, 0x0) syz_usb_ep_write(r0, 0x81, 0x10, &(0x7f0000000100)='\x00'/16) r1 = socket$can_raw(0x1d, 0x3, 0x1) ioctl$sock_SIOCGIFINDEX(r1, 0x8933, &(0x7f0000000300)={'vcan0\x00'}) 26.562555749s ago: executing program 1 (id=13): openat(0xffffffffffffff9c, &(0x7f0000000400)='./nonexistent\x00', 0x0, 0x0) 18.669670072s ago: executing program 0 (id=14): r0 = socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$tipc2(&(0x7f0000000000), 0xffffffffffffffff) sendmsg$TIPC_NL_BEARER_ENABLE(r0, &(0x7f0000000040)={0x0, 0x0, &(0x7f0000000080)={&(0x7f00000000c0)={0x28, r1, 0x1, 0x123, 0x234, {}, [@TIPC_NLA_BEARER={0x14, 0x1, 0x0, 0x1, [@TIPC_NLA_BEARER_NAME={0x10, 0x1, @l2={'eth', 0x3a, 'syz_tun\x00'}}]}]}, 0x28}}, 0x0) syz_emit_ethernet(0x40, &(0x7f0000000100)={@local, @empty, @void, {@generic={0x88ca, "fa00"/50}}}, 0x0) 12.25963229s ago: executing program 1 (id=15): r0 = socket$nl_audit(0x10, 0x3, 0x9) sendmsg$AUDIT_SET(r0, &(0x7f0000000440)={0x0, 0x0, &(0x7f0000000480)={&(0x7f00000004c0)={0x3c, 0x3e9, 0x1, 0x0, 0x0, {0x1, 0x1, 0x1}}, 0x3c}}, 0x0) sendmsg$AUDIT_ADD_RULE(r0, &(0x7f0000000500)={0x0, 0x0, &(0x7f0000000540)={&(0x7f0000000580)={0x420, 0x3f3, 0x1, 0x0, 0x0, {0x4, 0x2}}, 0x420}}, 0x0) syz_clone(0x0, &(0x7f0000000800), 0x0, &(0x7f0000000a00), &(0x7f0000000c00), &(0x7f0000000e00)) mkdirat(0xffffffffffffff9c, &(0x7f0000000100)='dir1\x00', 0x1ff) mkdirat(0xffffffffffffff9c, &(0x7f0000000140)='dir2\x00', 0x1ff) openat(0xffffffffffffff9c, &(0x7f0000000180)='dir1/file1\x00', 0x42, 0x1ff) openat(0xffffffffffffff9c, &(0x7f00000001c0)='dir2/file2\x00', 0x42, 0x1ff) renameat2(0xffffffffffffff9c, &(0x7f0000000200)='dir1/file1\x00', 0xffffffffffffff9c, &(0x7f0000000240)='dir2/file2\x00', 0x0) 0s ago: executing program 0 (id=16): r0 = syz_open_dev$usbfs(&(0x7f0000000000), 0xb, 0x2) ioctl$USBDEVFS_IOCTL(r0, 0xc0105512, &(0x7f0000000100)) ioctl$USBDEVFS_CLAIMINTERFACE(r0, 0x8004550f, 0x0) ioctl$USBDEVFS_SUBMITURB(r0, 0x8038550a, &(0x7f0000000300)=@urb_type_bulk={0x3, {0x1, 0x1}, 0x0, 0x0, &(0x7f0000000400)='\x00'/64, 0x40, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0}) kernel console output (not intermixed with test programs): Warning: Permanently added '[localhost]:62707' (ED25519) to the list of known hosts. syzkaller login: [ 596.787762][ T3215] cgroup: Unknown subsys name 'net' [ 597.533501][ T3215] cgroup: Unknown subsys name 'cpuset' [ 597.886359][ T3215] cgroup: Unknown subsys name 'rlimit' Setting up swapspace version 1, size = 127995904 bytes [ 683.592064][ T3215] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k [ 830.921205][ T3222] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 831.033912][ T3222] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 833.753201][ T3223] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 834.042001][ T3223] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 846.613496][ T3223] hsr_slave_0: entered promiscuous mode [ 846.666686][ T3223] hsr_slave_1: entered promiscuous mode [ 847.528806][ T3222] hsr_slave_0: entered promiscuous mode [ 847.568992][ T3222] hsr_slave_1: entered promiscuous mode [ 847.592033][ T3222] debugfs: 'hsr0' already exists in 'hsr' [ 847.595427][ T3222] Cannot create hsr debugfs directory [ 864.193425][ T3223] netdevsim netdevsim1 netdevsim0: renamed from eth0 [ 864.432648][ T3223] 8021q: adding VLAN 0 to HW filter on device netdevsim0 [ 864.508908][ T3223] netdevsim netdevsim1 netdevsim1: renamed from eth1 [ 865.032456][ T3223] 8021q: adding VLAN 0 to HW filter on device netdevsim1 [ 865.145674][ T3223] netdevsim netdevsim1 netdevsim2: renamed from eth2 [ 865.344844][ T3223] 8021q: adding VLAN 0 to HW filter on device netdevsim2 [ 866.052662][ T3223] netdevsim netdevsim1 netdevsim3: renamed from eth3 [ 866.316740][ T3223] 8021q: adding VLAN 0 to HW filter on device netdevsim3 [ 869.272739][ T3222] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 869.405990][ T3222] 8021q: adding VLAN 0 to HW filter on device netdevsim0 [ 869.436936][ T3222] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 869.887407][ T3222] 8021q: adding VLAN 0 to HW filter on device netdevsim1 [ 869.952961][ T3222] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 870.527407][ T3222] 8021q: adding VLAN 0 to HW filter on device netdevsim2 [ 870.663902][ T3222] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 870.908578][ T3222] 8021q: adding VLAN 0 to HW filter on device netdevsim3 [ 889.533199][ T3222] 8021q: adding VLAN 0 to HW filter on device bond0 [ 890.416258][ T3223] 8021q: adding VLAN 0 to HW filter on device bond0 [ 978.959688][ T3223] veth0_vlan: entered promiscuous mode [ 981.950748][ T3222] veth0_vlan: entered promiscuous mode [ 982.367582][ T3223] veth1_vlan: entered promiscuous mode [ 984.715700][ T3222] veth1_vlan: entered promiscuous mode [ 989.306647][ T3223] veth0_macvtap: entered promiscuous mode [ 990.454645][ T3223] veth1_macvtap: entered promiscuous mode [ 991.022054][ T3222] veth0_macvtap: entered promiscuous mode [ 991.517125][ T3222] veth1_macvtap: entered promiscuous mode [ 996.076836][ T54] netdevsim netdevsim1 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 996.304613][ T54] netdevsim netdevsim1 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 996.308106][ T54] netdevsim netdevsim1 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 997.564111][ T30] netdevsim netdevsim1 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 1000.132609][ T54] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 1001.971663][ T12] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 1002.233373][ T54] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 1003.094097][ T3777] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 1006.625234][ T3222] 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. [ 1048.154910][ T3839] usb 1-1: new high-speed USB device number 2 using dummy_hcd [ 1049.037807][ T3839] usb 1-1: Dual-Role OTG device on HNP port [ 1049.116425][ T3839] usb 1-1: New USB device found, idVendor=1234, idProduct=5678, bcdDevice= 7.02 [ 1049.127076][ T3839] usb 1-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 1071.816835][ T3891] UDC core: USB Raw Gadget: couldn't find an available UDC or it's busy [ 1072.909132][ T3891] misc raw-gadget: fail, usb_gadget_register_driver returned -16 [ 1112.184391][ T3906] ubi0: attaching mtd0 [ 1117.591619][ T3896] usb 2-1: new high-speed USB device number 2 using dummy_hcd [ 1118.466150][ T3906] ubi0: scanning is finished [ 1118.518758][ T3896] usb 2-1: Using ep0 maxpacket: 8 [ 1118.545543][ T3906] ubi0: empty MTD device detected [ 1119.275780][ T3896] usb 2-1: config 1 interface 0 altsetting 0 bulk endpoint 0x81 has invalid maxpacket 64 [ 1119.325043][ T3896] usb 2-1: config 1 interface 0 altsetting 0 bulk endpoint 0x2 has invalid maxpacket 64 [ 1119.748401][ T3896] usb 2-1: New USB device found, idVendor=050f, idProduct=0180, bcdDevice= 0.00 [ 1119.787208][ T3896] usb 2-1: New USB device strings: Mfr=1, Product=2, SerialNumber=0 [ 1119.805100][ T3896] usb 2-1: Product: syz [ 1119.827294][ T3896] usb 2-1: Manufacturer: syz [ 1126.531922][ T3896] usb 2-1: can't set config #1, error -110 [ 1127.681825][ T3906] ubi0 error: ubi_attach_mtd_dev: cannot spawn "ubi_bgt0d", error -4 [ 1130.024584][ T3838] usb 2-1: USB disconnect, device number 2 [ 1146.634033][ T3930] UDC core: USB Raw Gadget: couldn't find an available UDC or it's busy [ 1147.135759][ T3930] misc raw-gadget: fail, usb_gadget_register_driver returned -16 [ 1198.177432][ T3943] usb 1-1: USB disconnect, device number 2 [ 1214.913050][ T3943] ================================================================== [ 1214.915479][ T3943] BUG: KASAN: slab-use-after-free in snd_usb_midi_v2_free+0x524/0x6ec [ 1214.917470][ T3943] Write of size 8 at addr ffffaf8015390350 by task syz.0.16/3943 [ 1214.919596][ T3943] [ 1214.922589][ T3943] CPU: 1 UID: 0 PID: 3943 Comm: syz.0.16 Not tainted syzkaller #0 PREEMPT [ 1214.923305][ T3943] Hardware name: riscv-virtio,qemu (DT) [ 1214.924416][ T3943] Call Trace: [ 1214.925483][ T3943] [] dump_backtrace+0x2e/0x3c [ 1214.926704][ T3943] [] show_stack+0x30/0x3c [ 1214.927380][ T3943] [] dump_stack_lvl+0x114/0x1aa [ 1214.928330][ T3943] [] print_report+0x27a/0x592 [ 1214.928943][ T3943] [] kasan_report+0xf0/0x26c [ 1214.929476][ T3943] [] __asan_report_store8_noabort+0x12/0x1a [ 1214.930106][ T3943] [] snd_usb_midi_v2_free+0x524/0x6ec [ 1214.930713][ T3943] [] snd_usb_midi_v2_free_all+0x70/0xd0 [ 1214.931375][ T3943] [] snd_usb_audio_free+0x3e/0x10a [ 1214.931920][ T3943] [] release_card_device+0x98/0x1be [ 1214.932651][ T3943] [] device_release+0xb4/0x24a [ 1214.933259][ T3943] [] kobject_put+0x20a/0x5de [ 1214.933975][ T3943] [] put_device+0x28/0x3a [ 1214.934536][ T3943] [] snd_card_free_when_closed+0x30/0x42 [ 1214.935192][ T3943] [] usb_audio_disconnect+0x1d8/0x5cc [ 1214.935740][ T3943] [] usb_unbind_interface+0x18a/0x812 [ 1214.936561][ T3943] [] device_remove+0x11a/0x15c [ 1214.937357][ T3943] [] device_release_driver_internal+0x3ca/0x554 [ 1214.937972][ T3943] [] device_release_driver+0x1e/0x28 [ 1214.938515][ T3943] [] bus_remove_device+0x284/0x518 [ 1214.939282][ T3943] [] device_del+0x312/0x870 [ 1214.939890][ T3943] [] usb_disable_device+0x2d2/0x718 [ 1214.940647][ T3943] [] usb_disconnect+0x27c/0x89e [ 1214.941262][ T3943] [] hub_quiesce+0x13e/0x2d6 [ 1214.941839][ T3943] [] hub_disconnect+0xb0/0x48a [ 1214.942490][ T3943] [] usb_unbind_interface+0x18a/0x812 [ 1214.943327][ T3943] [] device_remove+0x11a/0x15c [ 1214.944356][ T3943] [] device_release_driver_internal+0x3ca/0x554 [ 1214.944978][ T3943] [] device_release_driver+0x1e/0x28 [ 1214.945526][ T3943] [] usb_driver_release_interface+0x108/0x174 [ 1214.946377][ T3943] [] proc_ioctl+0x546/0x650 [ 1214.947052][ T3943] [] usbdev_do_ioctl+0x28de/0x5002 [ 1214.947766][ T3943] [] usbdev_ioctl+0x26/0x34 [ 1214.948469][ T3943] [] __riscv_sys_ioctl+0x17c/0x1e2 [ 1214.949176][ T3943] [] syscall_handler+0x92/0x114 [ 1214.949812][ T3943] [] do_trap_ecall_u+0x3e4/0x636 [ 1214.950405][ T3943] [] handle_exception+0x168/0x174 [ 1214.951410][ T3943] [ 1214.983481][ T3943] Allocated by task 3839: [ 1214.984746][ T3943] stack_trace_save+0xa0/0xd2 [ 1214.986113][ T3943] kasan_save_stack+0x3e/0x66 [ 1214.987505][ T3943] kasan_save_track+0x16/0x28 [ 1214.988881][ T3943] kasan_save_alloc_info+0x30/0x3e [ 1214.990086][ T3943] __kasan_kmalloc+0xa0/0xa6 [ 1214.991427][ T3943] __kmalloc_cache_noprof+0x258/0x676 [ 1214.992693][ T3943] snd_ump_endpoint_new+0x98/0x3fe [ 1214.993864][ T3943] create_midi2_ump+0x286/0x7f8 [ 1214.995149][ T3943] snd_usb_midi_v2_create+0x10be/0x3fce [ 1214.996363][ T3943] snd_usb_create_stream.isra.0+0x334/0x4ee [ 1214.997570][ T3943] usb_audio_probe+0xf86/0x330e [ 1214.998712][ T3943] usb_probe_interface+0x2bc/0x916 [ 1214.999873][ T3943] really_probe+0x222/0xa8e [ 1215.000986][ T3943] __driver_probe_device+0x1d6/0x43e [ 1215.002229][ T3943] driver_probe_device+0x5e/0x162 [ 1215.003349][ T3943] __device_attach_driver+0x1c2/0x30a [ 1215.004492][ T3943] bus_for_each_drv+0x142/0x1dc [ 1215.005815][ T3943] __device_attach+0x1c4/0x490 [ 1215.006986][ T3943] device_initial_probe+0xb2/0xc8 [ 1215.008106][ T3943] bus_probe_device+0x50/0x146 [ 1215.009431][ T3943] device_add+0x1150/0x1880 [ 1215.010709][ T3943] usb_set_configuration+0xe92/0x196e [ 1215.012160][ T3943] usb_generic_driver_probe+0x9e/0x11a [ 1215.013517][ T3943] usb_probe_device+0xd4/0x378 [ 1215.014915][ T3943] really_probe+0x222/0xa8e [ 1215.016021][ T3943] __driver_probe_device+0x1d6/0x43e [ 1215.017171][ T3943] driver_probe_device+0x5e/0x162 [ 1215.018290][ T3943] __device_attach_driver+0x1c2/0x30a [ 1215.019448][ T3943] bus_for_each_drv+0x142/0x1dc [ 1215.020784][ T3943] __device_attach+0x1c4/0x490 [ 1215.021921][ T3943] device_initial_probe+0xb2/0xc8 [ 1215.023113][ T3943] bus_probe_device+0x50/0x146 [ 1215.024487][ T3943] device_add+0x1150/0x1880 [ 1215.025747][ T3943] usb_new_device+0x8e6/0x169a [ 1215.026969][ T3943] hub_event+0x2c1a/0x4a62 [ 1215.028138][ T3943] process_one_work+0x90a/0x20a0 [ 1215.029518][ T3943] worker_thread+0x532/0xcaa [ 1215.030900][ T3943] kthread+0x312/0x438 [ 1215.032220][ T3943] ret_from_fork_kernel+0x94/0xef6 [ 1215.033510][ T3943] ret_from_fork_kernel_asm+0x16/0x18 [ 1215.034935][ T3943] [ 1215.035626][ T3943] Freed by task 3943: [ 1215.036614][ T3943] stack_trace_save+0xa0/0xd2 [ 1215.037787][ T3943] kasan_save_stack+0x3e/0x66 [ 1215.039287][ T3943] kasan_save_track+0x16/0x28 [ 1215.040637][ T3943] kasan_save_free_info+0x40/0x5a [ 1215.042209][ T3943] __kasan_slab_free+0x5e/0x7e [ 1215.043597][ T3943] kfree+0x298/0x76c [ 1215.044635][ T3943] snd_rawmidi_free.part.0+0x328/0x456 [ 1215.046169][ T3943] snd_rawmidi_dev_free+0x3e/0x5c [ 1215.047519][ T3943] __snd_device_free+0x182/0x3b8 [ 1215.048900][ T3943] snd_device_free_all+0xe0/0x1ec [ 1215.050326][ T3943] release_card_device+0x6c/0x1be [ 1215.051668][ T3943] device_release+0xb4/0x24a [ 1215.052813][ T3943] kobject_put+0x20a/0x5de [ 1215.054132][ T3943] put_device+0x28/0x3a [ 1215.055275][ T3943] snd_card_free_when_closed+0x30/0x42 [ 1215.056570][ T3943] usb_audio_disconnect+0x1d8/0x5cc [ 1215.057807][ T3943] usb_unbind_interface+0x18a/0x812 [ 1215.059434][ T3943] device_remove+0x11a/0x15c [ 1215.060869][ T3943] device_release_driver_internal+0x3ca/0x554 [ 1215.062154][ T3943] device_release_driver+0x1e/0x28 [ 1215.063369][ T3943] bus_remove_device+0x284/0x518 [ 1215.064876][ T3943] device_del+0x312/0x870 [ 1215.066113][ T3943] usb_disable_device+0x2d2/0x718 [ 1215.067566][ T3943] usb_disconnect+0x27c/0x89e [ 1215.068769][ T3943] hub_quiesce+0x13e/0x2d6 [ 1215.069981][ T3943] hub_disconnect+0xb0/0x48a [ 1215.071175][ T3943] usb_unbind_interface+0x18a/0x812 [ 1215.072651][ T3943] device_remove+0x11a/0x15c [ 1215.074133][ T3943] device_release_driver_internal+0x3ca/0x554 [ 1215.075481][ T3943] device_release_driver+0x1e/0x28 [ 1215.076833][ T3943] usb_driver_release_interface+0x108/0x174 [ 1215.078402][ T3943] proc_ioctl+0x546/0x650 [ 1215.079626][ T3943] usbdev_do_ioctl+0x28de/0x5002 [ 1215.080974][ T3943] usbdev_ioctl+0x26/0x34 [ 1215.082475][ T3943] __riscv_sys_ioctl+0x17c/0x1e2 [ 1215.083774][ T3943] syscall_handler+0x92/0x114 [ 1215.085054][ T3943] do_trap_ecall_u+0x3e4/0x636 [ 1215.086263][ T3943] handle_exception+0x168/0x174 [ 1215.087484][ T3943] [ 1215.088247][ T3943] The buggy address belongs to the object at ffffaf8015390000 [ 1215.088247][ T3943] which belongs to the cache kmalloc-4k of size 4096 [ 1215.090026][ T3943] The buggy address is located 848 bytes inside of [ 1215.090026][ T3943] freed 4096-byte region [ffffaf8015390000, ffffaf8015391000) [ 1215.091947][ T3943] [ 1215.092733][ T3943] The buggy address belongs to the physical page: [ 1215.095213][ T3943] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x95390 [ 1215.097027][ T3943] head: order:3 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0 [ 1215.098548][ T3943] flags: 0x40(head|node=0|zone=0) [ 1215.100430][ T3943] page_type: f5(slab) [ 1215.102430][ T3943] raw: 0000000000000040 ffffaf8012002140 dead000000000100 dead000000000122 [ 1215.103837][ T3943] raw: 0000000000000000 0000000800040004 00000000f5000000 0000000000000000 [ 1215.105395][ T3943] head: 0000000000000040 ffffaf8012002140 dead000000000100 dead000000000122 [ 1215.106920][ T3943] head: 0000000000000000 0000000800040004 00000000f5000000 0000000000000000 [ 1215.108389][ T3943] head: 0000000000000003 fffffffffffffe01 00000000ffffffff 00000000ffffffff [ 1215.109717][ T3943] head: ffffffffffffffff 0000000000000000 00000000ffffffff 0000000000000008 [ 1215.111065][ T3943] page dumped because: kasan: bad access detected [ 1215.112543][ T3943] page_owner tracks the page as allocated [ 1215.113617][ T3943] page last allocated via order 3, migratetype Unmovable, gfp_mask 0xd2820(GFP_ATOMIC|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), pid 3285, tgid 3285 (kworker/u8:3), ts 896197643300, free_ts 894561861200 [ 1215.116101][ T3943] __set_page_owner+0x92/0x4b0 [ 1215.117592][ T3943] post_alloc_hook+0xe4/0x1a0 [ 1215.118783][ T3943] get_page_from_freelist+0x914/0x395c [ 1215.120063][ T3943] __alloc_frozen_pages_noprof+0x224/0x2e40 [ 1215.121450][ T3943] new_slab+0x94/0x6be [ 1215.122560][ T3943] refill_objects+0x20a/0x3ba [ 1215.123750][ T3943] __pcs_replace_empty_main+0x27e/0x5fa [ 1215.125064][ T3943] __kmalloc_node_track_caller_noprof+0x5f0/0x8c0 [ 1215.126586][ T3943] kmalloc_reserve+0xea/0x344 [ 1215.127773][ T3943] __alloc_skb+0x1ba/0x768 [ 1215.128987][ T3943] nsim_dev_trap_report_work+0x232/0xbe8 [ 1215.130258][ T3943] process_one_work+0x90a/0x20a0 [ 1215.131784][ T3943] worker_thread+0x532/0xcaa [ 1215.133200][ T3943] kthread+0x312/0x438 [ 1215.134532][ T3943] ret_from_fork_kernel+0x94/0xef6 [ 1215.135805][ T3943] ret_from_fork_kernel_asm+0x16/0x18 [ 1215.137240][ T3943] page last free pid 3780 tgid 3780 stack trace: [ 1215.138470][ T3943] __reset_page_owner+0x76/0x1bc [ 1215.139882][ T3943] __free_frozen_pages+0x6b0/0x136c [ 1215.141075][ T3943] free_frozen_pages+0xe/0x16 [ 1215.142326][ T3943] __free_slab+0xda/0x250 [ 1215.143416][ T3943] free_slab+0x28/0x16c [ 1215.144497][ T3943] __slab_free+0x23c/0x2f8 [ 1215.145610][ T3943] ___cache_free+0x94/0xac [ 1215.146812][ T3943] qlist_free_all+0x64/0x134 [ 1215.147991][ T3943] kasan_quarantine_reduce+0x152/0x1b4 [ 1215.149374][ T3943] __kasan_slab_alloc+0x5c/0x82 [ 1215.150831][ T3943] kmem_cache_alloc_noprof+0x202/0x67a [ 1215.152130][ T3943] do_getname+0x4c/0x398 [ 1215.153514][ T3943] getname_flags+0x22/0x2e [ 1215.154709][ T3943] do_sys_openat2+0xc6/0x1ca [ 1215.156082][ T3943] __riscv_sys_openat+0x122/0x1f2 [ 1215.157416][ T3943] syscall_handler+0x92/0x114 [ 1215.158912][ T3943] [ 1215.159590][ T3943] Memory state around the buggy address: [ 1215.161297][ T3943] ffffaf8015390200: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 1215.162598][ T3943] ffffaf8015390280: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 1215.163836][ T3943] >ffffaf8015390300: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 1215.164971][ T3943] ^ [ 1215.166189][ T3943] ffffaf8015390380: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 1215.167388][ T3943] ffffaf8015390400: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 1215.168645][ T3943] ================================================================== [ 1215.634706][ T3943] Kernel panic - not syncing: KASAN: panic_on_warn set ... [ 1215.636979][ T3943] CPU: 0 UID: 0 PID: 3943 Comm: syz.0.16 Not tainted syzkaller #0 PREEMPT [ 1215.638466][ T3943] Hardware name: riscv-virtio,qemu (DT) [ 1215.639370][ T3943] Call Trace: [ 1215.640110][ T3943] [] dump_backtrace+0x2e/0x3c [ 1215.641617][ T3943] [] show_stack+0x30/0x3c [ 1215.642928][ T3943] [] dump_stack_lvl+0x114/0x1aa [ 1215.644468][ T3943] [] dump_stack+0x1c/0x24 [ 1215.645979][ T3943] [] vpanic+0x32e/0x75a [ 1215.648129][ T3943] [] panic+0xa0/0xa2 [ 1215.649359][ T3943] [] check_panic_on_warn+0xc0/0xe4 [ 1215.651179][ T3943] [] end_report.part.0+0x4e/0xae [ 1215.653584][ T3943] [] kasan_report+0x164/0x26c [ 1215.655690][ T3943] [] __asan_report_store8_noabort+0x12/0x1a [ 1215.658233][ T3943] [] snd_usb_midi_v2_free+0x524/0x6ec [ 1215.659793][ T3943] [] snd_usb_midi_v2_free_all+0x70/0xd0 [ 1215.661251][ T3943] [] snd_usb_audio_free+0x3e/0x10a [ 1215.663210][ T3943] [] release_card_device+0x98/0x1be [ 1215.664619][ T3943] [] device_release+0xb4/0x24a [ 1215.665982][ T3943] [] kobject_put+0x20a/0x5de [ 1215.667366][ T3943] [] put_device+0x28/0x3a [ 1215.668641][ T3943] [] snd_card_free_when_closed+0x30/0x42 [ 1215.670019][ T3943] [] usb_audio_disconnect+0x1d8/0x5cc [ 1215.671308][ T3943] [] usb_unbind_interface+0x18a/0x812 [ 1215.672891][ T3943] [] device_remove+0x11a/0x15c [ 1215.674675][ T3943] [] device_release_driver_internal+0x3ca/0x554 [ 1215.677201][ T3943] [] device_release_driver+0x1e/0x28 [ 1215.679571][ T3943] [] bus_remove_device+0x284/0x518 [ 1215.682039][ T3943] [] device_del+0x312/0x870 [ 1215.684309][ T3943] [] usb_disable_device+0x2d2/0x718 [ 1215.686532][ T3943] [] usb_disconnect+0x27c/0x89e [ 1215.687959][ T3943] [] hub_quiesce+0x13e/0x2d6 [ 1215.688875][ T3943] [] hub_disconnect+0xb0/0x48a [ 1215.689786][ T3943] [] usb_unbind_interface+0x18a/0x812 [ 1215.690989][ T3943] [] device_remove+0x11a/0x15c [ 1215.692120][ T3943] [] device_release_driver_internal+0x3ca/0x554 [ 1215.693271][ T3943] [] device_release_driver+0x1e/0x28 [ 1215.694277][ T3943] [] usb_driver_release_interface+0x108/0x174 [ 1215.695508][ T3943] [] proc_ioctl+0x546/0x650 [ 1215.696523][ T3943] [] usbdev_do_ioctl+0x28de/0x5002 [ 1215.697513][ T3943] [] usbdev_ioctl+0x26/0x34 [ 1215.698721][ T3943] [] __riscv_sys_ioctl+0x17c/0x1e2 [ 1215.699862][ T3943] [] syscall_handler+0x92/0x114 [ 1215.700859][ T3943] [] do_trap_ecall_u+0x3e4/0x636 [ 1215.701924][ T3943] [] handle_exception+0x168/0x174 [ 1215.703219][ T3943] SMP: stopping secondary CPUs [ 1215.706234][ T3943] Rebooting in 86400 seconds.. VM DIAGNOSIS: 07:23:34 Registers: info registers vcpu 0 CPU#0 V = 0 pc ffffffff802ee708 mhartid 0000000000000000 mstatus 0000000a000001a0 hstatus 0000000200000000 vsstatus 0000000a00000000 mip 0000000000000020 mie 000000000000022a mideleg 0000000000001666 hideleg 0000000000000000 medeleg 0000000000f4b509 hedeleg 0000000000000000 mtvec 00000000800004f8 stvec ffffffff8654bd48 vstvec 0000000000000000 mepc ffffffff802221b0 sepc ffffffff86547c4e vsepc 0000000000000000 mcause 8000000000000003 scause 8000000000000009 vscause 0000000000000000 mtval 0000000000000000 stval 0000000000000000 htval 0000000000000000 mtval2 0000000000000000 mscratch 0000000080049000 sscratch 0000000000000000 satp 90127000000a0a8f x0/zero 0000000000000000 x1/ra ffffffff802ee6d8 x2/sp ffff8f8000007d30 x3/gp ffffffff8a4a7c60 x4/tp ffffaf8013680000 x5/t0 ffff8f8000000000 x6/t1 ffffffff9187f620 x7/t2 ffffaf8072c1d7a8 x8/s0 ffff8f8000007e10 x9/s1 ffffffff9187f620 x10/a0 0000000000000000 x11/a1 ffffffff880aaf78 x12/a2 ffffffffc1f0e110 x13/a3 ffffffff8a5bd0e0 x14/a4 0000000000010002 x15/a5 0000000000000000 x16/a6 0000000000000000 x17/a7 ffffffff868694b8 x18/s2 ffffaf8072c19888 x19/s3 0000000000000001 x20/s4 0000000000000000 x21/s5 0000000000000000 x22/s6 0000000000000000 x23/s7 ffffffff8034663e x24/s8 ffffffff86869888 x25/s9 ffffffff9187f620 x26/s10 0000000000000000 x27/s11 ffffffff9187f620 x28/t3 0000000000000002 x29/t4 0000000000000000 x30/t5 ffffffff868694b8 x31/t6 0000000000000002 fcsr 0000000000000000 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 CPU#1 V = 0 pc ffffffff865478aa mhartid 0000000000000001 mstatus 0000000a000000a0 hstatus 0000000200000000 vsstatus 0000000a00000000 mip 0000000000000020 mie 000000000000022a mideleg 0000000000001666 hideleg 0000000000000000 medeleg 0000000000f4b509 hedeleg 0000000000000000 mtvec 00000000800004f8 stvec ffffffff8654bd48 vstvec 0000000000000000 mepc ffffffff80092d8e sepc ffffffff85033168 vsepc 0000000000000000 mcause 0000000000000009 scause 8000000000000005 vscause 0000000000000000 mtval 0000000000000000 stval 0000000000000000 htval 0000000000000000 mtval2 0000000000000000 mscratch 0000000080047000 sscratch 0000000000000000 satp 901c7000000b44ca x0/zero 0000000000000000 x1/ra ffffffff81fdacc4 x2/sp ffff8f800ac56870 x3/gp ffffffff8a4a7c60 x4/tp ffffaf801cfa3580 x5/t0 ffff8f800ac567e0 x6/t1 0000000004000000 x7/t2 20666f2065746972 x8/s0 ffff8f800ac568a0 x9/s1 ffffffff9186d2c0 x10/a0 ffffffff9186d2c0 x11/a1 ffff8f800ac56970 x12/a2 0000000000080000 x13/a3 ffffffff81fdacba x14/a4 ffff8f80045f9000 x15/a5 0000000000080000 x16/a6 0000000000000003 x17/a7 fffffffff1f1f1f1 x18/s2 0000000200000020 x19/s3 ffffffff81fdacc4 x20/s4 0000000000000000 x21/s5 0000000000000000 x22/s6 0000000000000000 x23/s7 ffffffff892253f8 x24/s8 ffff8f800ac56cc0 x25/s9 1ffff1f00158ad28 x26/s10 0000000000000018 x27/s11 ffff8f800ac56c90 x28/t3 ffffffff81fec9b6 x29/t4 ffffffff8817ce78 x30/t5 fffffffef111fc39 x31/t6 ffffffff9167b1f7 fcsr 0000000000000000 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