b0 [ 1094.748075] ? fill_super+0x1990/0x1990 [ 1094.752053] legacy_get_tree+0xf2/0x200 [ 1094.756095] vfs_get_tree+0x123/0x450 [ 1094.759900] do_mount+0x1622/0x2fa0 [ 1094.763530] ? copy_mount_string+0x40/0x40 [ 1094.767761] ? kmem_cache_alloc_trace+0x354/0x760 [ 1094.772601] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 1094.778137] ? _copy_from_user+0xdd/0x150 [ 1094.782294] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 1094.787845] ? copy_mount_options+0x30e/0x440 [ 1094.792341] ksys_mount+0xdb/0x150 [ 1094.795878] __x64_sys_mount+0xbe/0x150 [ 1094.799850] do_syscall_64+0x1a3/0x800 [ 1094.803739] ? syscall_return_slowpath+0x5f0/0x5f0 [ 1094.808667] ? prepare_exit_to_usermode+0x232/0x3b0 [ 1094.813684] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 1094.818530] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 1094.823714] RIP: 0033:0x45a93a [ 1094.826901] Code: b8 a6 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 ed 8c fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 0f 83 ca 8c fb ff c3 66 0f 1f 84 00 00 00 00 00 [ 1094.845793] RSP: 002b:00007ff699fe9a88 EFLAGS: 00000206 ORIG_RAX: 00000000000000a5 [ 1094.853507] RAX: ffffffffffffffda RBX: 00007ff699fe9b30 RCX: 000000000045a93a [ 1094.860767] RDX: 00007ff699fe9ad0 RSI: 0000000020000200 RDI: 00007ff699fe9af0 [ 1094.868032] RBP: 0000000020000200 R08: 00007ff699fe9b30 R09: 00007ff699fe9ad0 03:47:14 executing program 1: r0 = openat$kvm(0xffffffffffffff9c, &(0x7f0000000140)='/dev/kvm\x00', 0x0, 0x0) r1 = ioctl$KVM_CREATE_VM(r0, 0xae01, 0x0) r2 = ioctl$KVM_CREATE_VCPU(r1, 0xae41, 0x0) ioctl$KVM_SET_USER_MEMORY_REGION(r1, 0x4020ae46, &(0x7f0000000400)={0x0, 0x3, 0x0, 0x2000, &(0x7f0000000000/0x2000)=nil}) syz_kvm_setup_cpu$x86(r1, 0xffffffffffffffff, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x0, 0x0, 0xfffffffffffffe78) sendmmsg$unix(0xffffffffffffffff, &(0x7f0000002780)=[{0x0, 0x0, &(0x7f0000001d00)=[{&(0x7f0000000bc0)="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", 0x3c5}], 0x1}], 0x1, 0x0) ioctl$KVM_REGISTER_COALESCED_MMIO(r1, 0x4010ae67, &(0x7f00000000c0)={0x0, 0x15200}) syz_kvm_setup_cpu$x86(0xffffffffffffffff, r2, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x8, 0x0, 0x0) ioctl$KVM_RUN(r2, 0xae80, 0xe803000000000000) [ 1094.875304] R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000003 [ 1094.882595] R13: 0000000000000000 R14: 00000000004db380 R15: 00000000ffffffff [ 1094.972365] gfs2: not a GFS2 filesystem 03:47:14 executing program 3: syz_mount_image$gfs2(&(0x7f0000000140)='gfs2\x00', &(0x7f0000000200)='./file0\x00', 0x0, 0x0, 0x0, 0x0, &(0x7f00000003c0)={[{@locktable={'locktable', 0x3d, '/'}}, {@lockproto_nolock='lockproto=lock_nolock'}]}) 03:47:14 executing program 0: socketpair$unix(0x1, 0x1, 0x0, &(0x7f0000000440)={0xffffffffffffffff, 0xffffffffffffffff}) ioctl$PERF_EVENT_IOC_ENABLE(r0, 0x8912, 0x400200) r1 = openat$kvm(0xffffffffffffff9c, &(0x7f00000000c0)='/dev/kvm\x00', 0x0, 0x0) openat$dlm_monitor(0xffffffffffffff9c, &(0x7f0000000340)='/dev/dlm-monitor\x00', 0x0, 0x0) r2 = ioctl$KVM_CREATE_VM(r1, 0xae01, 0x0) r3 = ioctl$KVM_CREATE_VCPU(r2, 0xae41, 0x0) syz_kvm_setup_cpu$x86(r2, 0xffffffffffffffff, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x0, 0x0, 0x0) syz_kvm_setup_cpu$x86(0xffffffffffffffff, r3, &(0x7f0000000000/0x18000)=nil, &(0x7f00000001c0)=[@text64={0x40, &(0x7f0000000040)="b9800000c00f3235001000000f30f24c0f2c49e8426dc4027d3493b80800003626660f7e676d660f1678b06cc403f9dfbeb70000000bc7442400f5000000c744240284d178bcff1c24f2f347dbe1", 0x4e}], 0x1, 0x48, 0x0, 0x0) pipe2(&(0x7f0000000000), 0x0) ioctl$KVM_RUN(r3, 0x5452, 0x0) 03:47:14 executing program 2: syz_mount_image$gfs2(&(0x7f0000000040)='gfs2\x00', &(0x7f0000000000)='./file0\x00', 0x0, 0x0, 0x0, 0x8000, 0x0) [ 1095.023152] kobject_add_internal failed for _ with -EEXIST, don't try to register things with the same name in the same directory. [ 1095.061775] gfs2: fsid=_: error -17 adding sysfs files 03:47:14 executing program 1: r0 = openat$kvm(0xffffffffffffff9c, &(0x7f0000000140)='/dev/kvm\x00', 0x0, 0x0) r1 = ioctl$KVM_CREATE_VM(r0, 0xae01, 0x0) r2 = ioctl$KVM_CREATE_VCPU(r1, 0xae41, 0x0) ioctl$KVM_SET_USER_MEMORY_REGION(r1, 0x4020ae46, &(0x7f0000000400)={0x0, 0x3, 0x0, 0x2000, &(0x7f0000000000/0x2000)=nil}) syz_kvm_setup_cpu$x86(r1, 0xffffffffffffffff, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x0, 0x0, 0xfffffffffffffe78) sendmmsg$unix(0xffffffffffffffff, &(0x7f0000002780)=[{0x0, 0x0, &(0x7f0000001d00)=[{&(0x7f0000000bc0)="b474ac0450ac6a2ff5ba4c1a19990e818d6fb646a5739e09c636550fdd39d0316e215a5a9427ac426da0b375844fb7f5ee5130d0b57cdab9af6f5f0d39c1787ec9ecde6263664c6a9859b7a0c4cbc99a05184da950f370cf65a18bff7975c0c12ca4227baa2164d031a5472d7f581c6f7eedd103d8fc89b6b4b52e5d3da0817eec8c57f722e356068b99a056ab6a693b9eebe38d75170491e07f9f69573b02b1a048f29e39cd24fed99e8606ffcbe4f617f48370ec62bd327cdfb9da8e8fef232b2e8f8f6868bb1781eab4c294befd65d9a336123bd34be8f256b5fc0420aa6e930f292a9a06365daaebd0bcaaaf5e0c12167aad0c62a48666383ee58b37df8077c5d2d5298d5247e240a78ff2543147129775f6d4a872df80d9da66c2a0a169df65141cbe88b1e280d60f6e11b25a0b5bb1bdd430378761d547f3ff7e42cc84c849e66004e30905d908e352a53f95bca84a68a6ce5ee82b69c939a196a7060bee28d8dee1ed52ae04b228bedf9302df44cc957780e42c2784d18e3695ee5e73dbe385331494af3cbcf8952e85469e9566c32692c0ceae8dab7b9553b5e8aa66edbad2ed828ba2a665a48a2822d9dc538863aea705c926c5a12fee84db545a36a13281e09e82c06211cc195cb4409bedfb7cf22f6c01fba9720bc4f447da73bb95bab6c056ce51bbc9d5b6622c54152e853f9639d2db2a5992e0f0e8f77a2e5efcfd139869cbdc902622399035d6ab8c22e33605be6850356be97ac05588720e1e215fbf5cb6633f0894e0a4dbd28708cac77792a31b00f47d18cebcb9114f1b0ffd66b587c5f9ba086fc530c6a0ac561068de208f18a3b6adc47f04bd63bd4a31544eb953398ddee5b5e4533aa529947aa46e7e517ff719e559c106f8afc570019f272a9f2d2699c7384612854de44dc40bb33aafee4e5fab1c06ceeffec56782452589f80c3946e6631c591e7f82af7e3a6422e0f35b0847f0a3049ee29b09f8aadf59c96a99576be85d6ddcf8c4d82373355add27397517402a56fd36bf877a53731413c30786431262705fb01511a778482cd85b60323b683e0e9d2f06b57678ddcf06f6da03f818e7f0b4db7045527f6e00fa26fe586fe0fcc72024fad6bab1739f6d7980d21f1fac0e7f53ee4cb254349b93a89f5695be91e5c586411b18f3f11298d979abdf4dd4796b181e623189aa73182c4c5ff346545168a520241ce23e08ade26085f654537258efaacfe1a64b2261c5180eb7c01ca6f4dc0f08f98ec12c06036278eff4c8d3b852bb2022be745861268ffbe0bb37c45452d2ac97aa6cb81db9f428688e6eab0e85ba6eb2eaecf4e8e137a2101f04b201258a71d857194610", 0x3c5}], 0x1}], 0x1, 0x0) ioctl$KVM_REGISTER_COALESCED_MMIO(r1, 0x4010ae67, &(0x7f00000000c0)={0x0, 0x15200}) syz_kvm_setup_cpu$x86(0xffffffffffffffff, r2, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x8, 0x0, 0x0) ioctl$KVM_RUN(r2, 0xae80, 0x1b000000) [ 1095.211849] gfs2: fsid=_: Trying to join cluster "lock_nolock", "_" [ 1095.248217] gfs2: fsid=_: Now mounting FS... [ 1095.274080] gfs2: not a GFS2 filesystem [ 1095.278405] gfs2: fsid=_: can't read superblock [ 1095.283731] gfs2: fsid=_: can't read superblock: -22 03:47:15 executing program 0: socketpair$unix(0x1, 0x1, 0x0, &(0x7f0000000440)={0xffffffffffffffff, 0xffffffffffffffff}) ioctl$PERF_EVENT_IOC_ENABLE(r0, 0x8912, 0x400200) r1 = openat$kvm(0xffffffffffffff9c, &(0x7f00000000c0)='/dev/kvm\x00', 0x0, 0x0) openat$dlm_monitor(0xffffffffffffff9c, &(0x7f0000000340)='/dev/dlm-monitor\x00', 0x0, 0x0) r2 = ioctl$KVM_CREATE_VM(r1, 0xae01, 0x0) r3 = ioctl$KVM_CREATE_VCPU(r2, 0xae41, 0x0) syz_kvm_setup_cpu$x86(r2, 0xffffffffffffffff, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x0, 0x0, 0x0) syz_kvm_setup_cpu$x86(0xffffffffffffffff, r3, &(0x7f0000000000/0x18000)=nil, &(0x7f00000001c0)=[@text64={0x40, &(0x7f0000000040)="b9800000c00f3235001000000f30f24c0f2c49e8426dc4027d3493b80800003626660f7e676d660f1678b06cc403f9dfbeb70000000bc7442400f5000000c744240284d178bcff1c24f2f347dbe1", 0x4e}], 0x1, 0x48, 0x0, 0x0) pipe2(&(0x7f0000000000), 0x0) ioctl$KVM_RUN(r3, 0xae80, 0x400000000000000) 03:47:15 executing program 2: r0 = dup2(0xffffffffffffff9c, 0xffffffffffffff9c) ioctl$SG_GET_SCSI_ID(r0, 0x2276, &(0x7f00000001c0)) ioctl$SCSI_IOCTL_START_UNIT(r0, 0x5) syz_mount_image$gfs2(&(0x7f0000000140)='gfs2\x00', &(0x7f0000000200)='./file0\x00', 0x0, 0x0, 0x0, 0x0, 0x0) ioctl$IOC_PR_RELEASE(r0, 0x401070ca, &(0x7f0000000280)={0xb6a, 0x81, 0x1}) socketpair$unix(0x1, 0x2, 0x0, 0x0) getsockopt$inet6_IPV6_XFRM_POLICY(0xffffffffffffff9c, 0x29, 0x23, &(0x7f0000000040)={{{@in6=@mcast1, @in6=@loopback, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0}}, {{@in6=@loopback}, 0x0, @in6=@mcast1}}, &(0x7f0000000180)=0xe8) r2 = getgid() ioctl$SG_SET_COMMAND_Q(r0, 0x2271, &(0x7f0000000240)=0x1) chown(&(0x7f0000000000)='./file0\x00', r1, r2) [ 1095.552177] gfs2: fsid=_: Trying to join cluster "lock_nolock", "_" [ 1095.578535] gfs2: fsid=_: Now mounting FS... [ 1095.602837] gfs2: not a GFS2 filesystem [ 1095.630925] gfs2: fsid=_: can't read superblock [ 1095.654862] gfs2: fsid=_: can't read superblock: -22 [ 1095.668189] gfs2: not a GFS2 filesystem 03:47:15 executing program 5: r0 = socket$inet(0x2, 0x4000000000000001, 0x0) setsockopt$inet_tcp_int(r0, 0x6, 0x80000000000002, &(0x7f0000000040)=0x74, 0x4) bind$inet(r0, &(0x7f0000000180)={0x2, 0x4e23, @multicast1}, 0x10) sendto$inet(r0, 0x0, 0x0, 0x200007fd, &(0x7f0000e68000)={0x2, 0x4e23, @local}, 0x10) write$binfmt_elf64(r0, &(0x7f00000012c0)=ANY=[@ANYBLOB="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"], 0x1e9) mmap(&(0x7f0000000000/0xb36000)=nil, 0xb36000, 0x3, 0x8031, 0xffffffffffffffff, 0x0) sendmmsg$inet_sctp(r0, &(0x7f0000002600)=[{0x0, 0x0, &(0x7f0000000240)=[{&(0x7f0000000380)="d4", 0x1}], 0x1, 0x0, 0x0, 0xf00}], 0x1, 0x0) 03:47:15 executing program 0: socketpair$unix(0x1, 0x1, 0x0, &(0x7f0000000440)={0xffffffffffffffff, 0xffffffffffffffff}) ioctl$PERF_EVENT_IOC_ENABLE(r0, 0x8912, 0x400200) r1 = openat$kvm(0xffffffffffffff9c, &(0x7f00000000c0)='/dev/kvm\x00', 0x0, 0x0) openat$dlm_monitor(0xffffffffffffff9c, &(0x7f0000000340)='/dev/dlm-monitor\x00', 0x0, 0x0) r2 = ioctl$KVM_CREATE_VM(r1, 0xae01, 0x0) r3 = ioctl$KVM_CREATE_VCPU(r2, 0xae41, 0x0) syz_kvm_setup_cpu$x86(r2, 0xffffffffffffffff, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x0, 0x0, 0x0) syz_kvm_setup_cpu$x86(0xffffffffffffffff, r3, &(0x7f0000000000/0x18000)=nil, &(0x7f00000001c0)=[@text64={0x40, &(0x7f0000000040)="b9800000c00f3235001000000f30f24c0f2c49e8426dc4027d3493b80800003626660f7e676d660f1678b06cc403f9dfbeb70000000bc7442400f5000000c744240284d178bcff1c24f2f347dbe1", 0x4e}], 0x1, 0x48, 0x0, 0x0) pipe2(&(0x7f0000000000), 0x0) ioctl$KVM_RUN(r3, 0xae80, 0x1800000000000000) 03:47:15 executing program 4: syz_mount_image$gfs2(&(0x7f0000000140)='gfs2\x00', &(0x7f0000000200)='./file0\x00', 0x0, 0x0, 0x0, 0x0, &(0x7f00000003c0)={[{@locktable={'locktable', 0x3d, '/'}}, {@lockproto_nolock='lockproto=lock_nolock'}]}) socketpair$unix(0x1, 0x1, 0x0, &(0x7f0000000180)) 03:47:15 executing program 1: r0 = openat$kvm(0xffffffffffffff9c, &(0x7f0000000140)='/dev/kvm\x00', 0x0, 0x0) r1 = ioctl$KVM_CREATE_VM(r0, 0xae01, 0x0) r2 = ioctl$KVM_CREATE_VCPU(r1, 0xae41, 0x0) ioctl$KVM_SET_USER_MEMORY_REGION(r1, 0x4020ae46, &(0x7f0000000400)={0x0, 0x3, 0x0, 0x2000, &(0x7f0000000000/0x2000)=nil}) syz_kvm_setup_cpu$x86(r1, 0xffffffffffffffff, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x0, 0x0, 0xfffffffffffffe78) sendmmsg$unix(0xffffffffffffffff, &(0x7f0000002780)=[{0x0, 0x0, &(0x7f0000001d00)=[{&(0x7f0000000bc0)="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", 0x3c5}], 0x1}], 0x1, 0x0) ioctl$KVM_REGISTER_COALESCED_MMIO(r1, 0x4010ae67, &(0x7f00000000c0)={0x0, 0x15200}) syz_kvm_setup_cpu$x86(0xffffffffffffffff, r2, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x8, 0x0, 0x0) ioctl$KVM_RUN(r2, 0xae80, 0x5000000) [ 1095.791930] sysfs: cannot create duplicate filename '/fs/gfs2/_' [ 1095.827305] CPU: 1 PID: 20544 Comm: syz-executor4 Not tainted 4.20.0-next-20190103 #4 [ 1095.835282] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 1095.844640] Call Trace: [ 1095.847229] dump_stack+0x1db/0x2d0 [ 1095.850865] ? dump_stack_print_info.cold+0x20/0x20 [ 1095.855883] ? _raw_spin_unlock_irqrestore+0xa4/0xe0 [ 1095.861012] sysfs_warn_dup.cold+0x1c/0x31 [ 1095.865253] sysfs_create_dir_ns+0x2ce/0x330 [ 1095.869659] ? sysfs_create_mount_point+0xa0/0xa0 [ 1095.874497] ? do_raw_spin_trylock+0x270/0x270 [ 1095.879130] kobject_add_internal.cold+0x129/0x6d8 [ 1095.884073] ? kobj_ns_type_registered+0x60/0x60 [ 1095.888831] ? kfree_const+0x59/0x70 [ 1095.892544] ? rcu_read_lock_sched_held+0x110/0x130 [ 1095.897592] ? kfree+0x1fa/0x230 [ 1095.900987] ? kfree_const+0x5e/0x70 [ 1095.904709] kobject_init_and_add+0x101/0x160 [ 1095.909207] ? kobject_add_internal+0x4b0/0x4b0 [ 1095.913875] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 1095.919424] ? vsnprintf+0x368/0x1b10 [ 1095.923240] gfs2_sys_fs_add+0x210/0x500 [ 1095.927300] ? recover_store+0x1a0/0x1a0 [ 1095.931364] ? snprintf+0xbb/0xf0 [ 1095.934819] ? vsprintf+0x30/0x40 [ 1095.938273] ? set_blocksize+0x2bf/0x340 [ 1095.942334] ? memcpy+0x46/0x50 [ 1095.945617] fill_super+0x894/0x1990 [ 1095.949360] ? gfs2_online_uevent+0x2d0/0x2d0 [ 1095.953859] ? snprintf+0xbb/0xf0 [ 1095.957307] ? vsprintf+0x40/0x40 [ 1095.960790] ? ns_capable_common+0x141/0x170 [ 1095.965199] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 1095.970210] ? set_blocksize+0x2bf/0x340 [ 1095.974270] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 1095.979805] gfs2_mount+0x5db/0x6ee [ 1095.983436] ? fill_super+0x1990/0x1990 [ 1095.987431] ? vfs_parse_fs_string+0x1c5/0x2b0 [ 1095.992012] ? vfs_parse_fs_param+0x4b0/0x4b0 [ 1095.996512] ? fill_super+0x1990/0x1990 [ 1096.000487] legacy_get_tree+0xf2/0x200 [ 1096.004508] vfs_get_tree+0x123/0x450 [ 1096.008314] do_mount+0x1622/0x2fa0 [ 1096.011952] ? copy_mount_string+0x40/0x40 [ 1096.016190] ? kmem_cache_alloc_trace+0x354/0x760 [ 1096.021031] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 1096.026578] ? _copy_from_user+0xdd/0x150 [ 1096.030734] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 1096.036286] ? copy_mount_options+0x30e/0x440 [ 1096.040802] ksys_mount+0xdb/0x150 [ 1096.044356] __x64_sys_mount+0xbe/0x150 [ 1096.048336] do_syscall_64+0x1a3/0x800 [ 1096.052231] ? syscall_return_slowpath+0x5f0/0x5f0 [ 1096.057160] ? prepare_exit_to_usermode+0x232/0x3b0 [ 1096.062183] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 1096.067031] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 1096.072266] RIP: 0033:0x45a93a [ 1096.075457] Code: b8 a6 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 ed 8c fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 0f 83 ca 8c fb ff c3 66 0f 1f 84 00 00 00 00 00 [ 1096.094351] RSP: 002b:00007ff699fe9a88 EFLAGS: 00000206 ORIG_RAX: 00000000000000a5 [ 1096.102060] RAX: ffffffffffffffda RBX: 00007ff699fe9b30 RCX: 000000000045a93a [ 1096.109325] RDX: 00007ff699fe9ad0 RSI: 0000000020000200 RDI: 00007ff699fe9af0 [ 1096.116591] RBP: 0000000020000200 R08: 00007ff699fe9b30 R09: 00007ff699fe9ad0 [ 1096.123851] R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000003 [ 1096.131116] R13: 0000000000000000 R14: 00000000004db380 R15: 00000000ffffffff 03:47:15 executing program 2: r0 = openat$btrfs_control(0xffffffffffffff9c, &(0x7f0000000100)='/dev/btrfs-control\x00', 0x200000, 0x0) ioctl$KVM_S390_UCAS_MAP(r0, 0x4018ae50, &(0x7f0000000240)={0x1ff, 0x0, 0x7}) syz_mount_image$gfs2(&(0x7f0000000140)='gfs2\x00', &(0x7f0000000200)='./file0\x00', 0x0, 0x0, 0x0, 0x0, 0x0) socketpair$unix(0x1, 0x0, 0x0, 0x0) r1 = socket$inet(0x2, 0x4, 0xffff) ioctl$FS_IOC_FIEMAP(r1, 0xc020660b, &(0x7f0000000180)={0xfff, 0x870d, 0x4002, 0x4, 0x1, [{0xc3, 0xfffffffffffff339, 0x85a, 0x0, 0x0, 0x200}]}) openat$apparmor_task_exec(0xffffffffffffff9c, &(0x7f0000000080)='/proc/self/attr/exec\x00', 0x2, 0x0) r2 = openat$dsp(0xffffffffffffff9c, &(0x7f0000000000)='/dev/dsp\x00', 0xa000, 0x0) write$apparmor_exec(r2, &(0x7f0000000280)=ANY=[@ANYBLOB="737461090009f24d9440ea56749429d00500696d655f7479704670726f1300ad9fca0d0b4111e14bcf79213f94e10b7fe2499e56d10000000000000000000000007be1b9764e3adf439b26e3436413b846b0638b6bd524e08cffc1683cd2a76b3b12bf5cf8c2370775c2229624ec3aeb55f8692304092d484bfce3a05fb2941c9405c736503210e7"], 0x14) rt_sigsuspend(&(0x7f0000000040)={0x9}, 0x8) [ 1096.188837] kobject_add_internal failed for _ with -EEXIST, don't try to register things with the same name in the same directory. 03:47:15 executing program 3: syz_mount_image$gfs2(&(0x7f0000000140)='gfs2\f', &(0x7f0000000200)='./file0\x00', 0x0, 0x0, 0x0, 0x0, &(0x7f00000003c0)={[{@locktable={'locktable', 0x3d, '/'}}, {@lockproto_nolock='lockproto=lock_nolock'}]}) [ 1096.230238] gfs2: fsid=_: error -17 adding sysfs files [ 1096.375491] gfs2: not a GFS2 filesystem 03:47:16 executing program 0: socketpair$unix(0x1, 0x1, 0x0, &(0x7f0000000440)={0xffffffffffffffff, 0xffffffffffffffff}) ioctl$PERF_EVENT_IOC_ENABLE(r0, 0x8912, 0x400200) r1 = openat$kvm(0xffffffffffffff9c, &(0x7f00000000c0)='/dev/kvm\x00', 0x0, 0x0) openat$dlm_monitor(0xffffffffffffff9c, &(0x7f0000000340)='/dev/dlm-monitor\x00', 0x0, 0x0) r2 = ioctl$KVM_CREATE_VM(r1, 0xae01, 0x0) r3 = ioctl$KVM_CREATE_VCPU(r2, 0xae41, 0x0) syz_kvm_setup_cpu$x86(r2, 0xffffffffffffffff, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x0, 0x0, 0x0) syz_kvm_setup_cpu$x86(0xffffffffffffffff, r3, &(0x7f0000000000/0x18000)=nil, &(0x7f00000001c0)=[@text64={0x40, &(0x7f0000000040)="b9800000c00f3235001000000f30f24c0f2c49e8426dc4027d3493b80800003626660f7e676d660f1678b06cc403f9dfbeb70000000bc7442400f5000000c744240284d178bcff1c24f2f347dbe1", 0x4e}], 0x1, 0x48, 0x0, 0x0) pipe2(&(0x7f0000000000), 0x0) ioctl$KVM_RUN(r3, 0xae80, 0x60182300) 03:47:16 executing program 1: r0 = openat$kvm(0xffffffffffffff9c, &(0x7f0000000140)='/dev/kvm\x00', 0x0, 0x0) r1 = ioctl$KVM_CREATE_VM(r0, 0xae01, 0x0) r2 = ioctl$KVM_CREATE_VCPU(r1, 0xae41, 0x0) ioctl$KVM_SET_USER_MEMORY_REGION(r1, 0x4020ae46, &(0x7f0000000400)={0x0, 0x3, 0x0, 0x2000, &(0x7f0000000000/0x2000)=nil}) syz_kvm_setup_cpu$x86(r1, 0xffffffffffffffff, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x0, 0x0, 0xfffffffffffffe78) sendmmsg$unix(0xffffffffffffffff, &(0x7f0000002780)=[{0x0, 0x0, &(0x7f0000001d00)=[{&(0x7f0000000bc0)="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", 0x3c5}], 0x1}], 0x1, 0x0) ioctl$KVM_REGISTER_COALESCED_MMIO(r1, 0x4010ae67, &(0x7f00000000c0)={0x0, 0x15200}) syz_kvm_setup_cpu$x86(0xffffffffffffffff, r2, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x8, 0x0, 0x0) ioctl$KVM_RUN(r2, 0xae80, 0x3) [ 1096.403095] gfs2: fsid=_: Trying to join cluster "lock_nolock", "_" [ 1096.429755] gfs2: fsid=_: Now mounting FS... [ 1096.487963] gfs2: not a GFS2 filesystem [ 1096.491979] gfs2: fsid=_: can't read superblock [ 1096.515165] gfs2: fsid=_: can't read superblock: -22 03:47:16 executing program 3: syz_mount_image$gfs2(&(0x7f0000000140)='gfs2\x00', &(0x7f0000000200)='./file0\x00', 0x0, 0x0, 0x0, 0x0, &(0x7f00000003c0)={[{@locktable={'locktable', 0x3d, '/'}}, {@lockproto_nolock='lockproto=lock_nolock'}]}) 03:47:16 executing program 4: syz_mount_image$gfs2(&(0x7f0000000140)='gfs2\x00', &(0x7f0000000200)='./file0\x00', 0x0, 0x0, 0x0, 0x0, &(0x7f00000003c0)={[{@locktable={'locktable', 0x3d, '/'}}, {@lockproto_nolock='lockproto=lock_nolock'}]}) socketpair$unix(0x1, 0x1, 0x0, &(0x7f0000000180)) 03:47:16 executing program 1: r0 = openat$kvm(0xffffffffffffff9c, &(0x7f0000000140)='/dev/kvm\x00', 0x0, 0x0) r1 = ioctl$KVM_CREATE_VM(r0, 0xae01, 0x0) r2 = ioctl$KVM_CREATE_VCPU(r1, 0xae41, 0x0) ioctl$KVM_SET_USER_MEMORY_REGION(r1, 0x4020ae46, &(0x7f0000000400)={0x0, 0x3, 0x0, 0x2000, &(0x7f0000000000/0x2000)=nil}) syz_kvm_setup_cpu$x86(r1, 0xffffffffffffffff, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x0, 0x0, 0xfffffffffffffe78) sendmmsg$unix(0xffffffffffffffff, &(0x7f0000002780)=[{0x0, 0x0, &(0x7f0000001d00)=[{&(0x7f0000000bc0)="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", 0x3c5}], 0x1}], 0x1, 0x0) ioctl$KVM_REGISTER_COALESCED_MMIO(r1, 0x4010ae67, &(0x7f00000000c0)={0x0, 0x15200}) syz_kvm_setup_cpu$x86(0xffffffffffffffff, r2, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x8, 0x0, 0x0) ioctl$KVM_RUN(r2, 0xae80, 0x3e8) [ 1096.821933] gfs2: fsid=_: Trying to join cluster "lock_nolock", "_" [ 1096.856478] gfs2: fsid=_: Now mounting FS... [ 1096.884883] gfs2: not a GFS2 filesystem [ 1096.893648] sysfs: cannot create duplicate filename '/fs/gfs2/_' [ 1096.916348] gfs2: fsid=_: can't read superblock [ 1096.927727] CPU: 1 PID: 20600 Comm: syz-executor4 Not tainted 4.20.0-next-20190103 #4 [ 1096.933256] gfs2: fsid=_: can't read superblock: -22 [ 1096.935718] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 1096.950175] Call Trace: [ 1096.952776] dump_stack+0x1db/0x2d0 [ 1096.956427] ? dump_stack_print_info.cold+0x20/0x20 [ 1096.961461] ? _raw_spin_unlock_irqrestore+0xa4/0xe0 [ 1096.966598] sysfs_warn_dup.cold+0x1c/0x31 [ 1096.970847] sysfs_create_dir_ns+0x2ce/0x330 [ 1096.975265] ? sysfs_create_mount_point+0xa0/0xa0 [ 1096.980111] ? do_raw_spin_trylock+0x270/0x270 [ 1096.984745] kobject_add_internal.cold+0x129/0x6d8 [ 1096.989702] ? kobj_ns_type_registered+0x60/0x60 [ 1096.994462] ? kfree_const+0x59/0x70 [ 1096.998186] ? rcu_read_lock_sched_held+0x110/0x130 [ 1097.003211] ? kfree+0x1fa/0x230 [ 1097.003242] ? kfree_const+0x5e/0x70 [ 1097.003261] kobject_init_and_add+0x101/0x160 [ 1097.003278] ? kobject_add_internal+0x4b0/0x4b0 [ 1097.003299] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 1097.003324] ? vsnprintf+0x368/0x1b10 [ 1097.003372] gfs2_sys_fs_add+0x210/0x500 [ 1097.003383] ? recover_store+0x1a0/0x1a0 [ 1097.003400] ? snprintf+0xbb/0xf0 [ 1097.003417] ? vsprintf+0x30/0x40 [ 1097.014987] ? set_blocksize+0x2bf/0x340 [ 1097.015005] ? memcpy+0x46/0x50 [ 1097.015026] fill_super+0x894/0x1990 [ 1097.015061] ? gfs2_online_uevent+0x2d0/0x2d0 [ 1097.015086] ? snprintf+0xbb/0xf0 [ 1097.025269] ? vsprintf+0x40/0x40 [ 1097.025291] ? ns_capable_common+0x141/0x170 [ 1097.025316] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 1097.025343] ? set_blocksize+0x2bf/0x340 [ 1097.025361] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 1097.025393] gfs2_mount+0x5db/0x6ee [ 1097.025413] ? fill_super+0x1990/0x1990 [ 1097.025460] ? vfs_parse_fs_string+0x1c5/0x2b0 [ 1097.037336] ? vfs_parse_fs_param+0x4b0/0x4b0 [ 1097.037353] ? fill_super+0x1990/0x1990 [ 1097.037368] legacy_get_tree+0xf2/0x200 [ 1097.044268] vfs_get_tree+0x123/0x450 [ 1097.044289] do_mount+0x1622/0x2fa0 [ 1097.044319] ? copy_mount_string+0x40/0x40 [ 1097.044337] ? kmem_cache_alloc_trace+0x354/0x760 [ 1097.044353] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 1097.044368] ? _copy_from_user+0xdd/0x150 [ 1097.044391] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 1097.044407] ? copy_mount_options+0x30e/0x440 [ 1097.051726] ksys_mount+0xdb/0x150 [ 1097.059920] __x64_sys_mount+0xbe/0x150 [ 1097.153916] do_syscall_64+0x1a3/0x800 [ 1097.157818] ? syscall_return_slowpath+0x5f0/0x5f0 [ 1097.162751] ? prepare_exit_to_usermode+0x232/0x3b0 [ 1097.167786] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 1097.172669] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 1097.177861] RIP: 0033:0x45a93a [ 1097.181068] Code: b8 a6 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 ed 8c fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 0f 83 ca 8c fb ff c3 66 0f 1f 84 00 00 00 00 00 [ 1097.199969] RSP: 002b:00007ff699fe9a88 EFLAGS: 00000206 ORIG_RAX: 00000000000000a5 [ 1097.207674] RAX: ffffffffffffffda RBX: 00007ff699fe9b30 RCX: 000000000045a93a [ 1097.214942] RDX: 00007ff699fe9ad0 RSI: 0000000020000200 RDI: 00007ff699fe9af0 [ 1097.222204] RBP: 0000000020000200 R08: 00007ff699fe9b30 R09: 00007ff699fe9ad0 [ 1097.229469] R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000003 03:47:16 executing program 5: r0 = socket$inet(0x2, 0x4000000000000001, 0x0) setsockopt$inet_tcp_int(r0, 0x6, 0x80000000000002, &(0x7f0000000040)=0x74, 0x4) bind$inet(r0, &(0x7f0000000180)={0x2, 0x4e23, @multicast1}, 0x10) sendto$inet(r0, 0x0, 0x0, 0x200007fd, &(0x7f0000e68000)={0x2, 0x4e23, @local}, 0x10) write$binfmt_elf64(r0, &(0x7f00000012c0)=ANY=[@ANYBLOB="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"], 0x1e9) mmap(&(0x7f0000000000/0xb36000)=nil, 0xb36000, 0x3, 0x8031, 0xffffffffffffffff, 0x0) sendmmsg$inet_sctp(r0, &(0x7f0000002600)=[{0x0, 0x0, &(0x7f0000000240)=[{&(0x7f0000000380)="d4", 0x1}], 0x1, 0x0, 0x0, 0xf00}], 0x1, 0x0) [ 1097.236739] R13: 0000000000000000 R14: 00000000004db380 R15: 00000000ffffffff [ 1097.256445] kobject_add_internal failed for _ with -EEXIST, don't try to register things with the same name in the same directory. [ 1097.268658] gfs2: fsid=_: error -17 adding sysfs files 03:47:17 executing program 2: syz_mount_image$gfs2(&(0x7f0000000140)='gfs2\x00', &(0x7f0000000200)='./file0\x00', 0x0, 0x0, 0x0, 0x0, 0x0) prctl$PR_SET_KEEPCAPS(0x8, 0x0) socketpair$unix(0x1, 0x0, 0x0, 0x0) [ 1097.335151] gfs2: fsid=_: Trying to join cluster "lock_nolock", "_" [ 1097.358547] gfs2: fsid=_: Now mounting FS... [ 1097.377247] gfs2: not a GFS2 filesystem 03:47:17 executing program 1: r0 = openat$kvm(0xffffffffffffff9c, &(0x7f0000000140)='/dev/kvm\x00', 0x0, 0x0) r1 = ioctl$KVM_CREATE_VM(r0, 0xae01, 0x0) r2 = ioctl$KVM_CREATE_VCPU(r1, 0xae41, 0x0) ioctl$KVM_SET_USER_MEMORY_REGION(r1, 0x4020ae46, &(0x7f0000000400)={0x0, 0x3, 0x0, 0x2000, &(0x7f0000000000/0x2000)=nil}) syz_kvm_setup_cpu$x86(r1, 0xffffffffffffffff, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x0, 0x0, 0xfffffffffffffe78) sendmmsg$unix(0xffffffffffffffff, &(0x7f0000002780)=[{0x0, 0x0, &(0x7f0000001d00)=[{&(0x7f0000000bc0)="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", 0x3c5}], 0x1}], 0x1, 0x0) ioctl$KVM_REGISTER_COALESCED_MMIO(r1, 0x4010ae67, &(0x7f00000000c0)={0x0, 0x15200}) syz_kvm_setup_cpu$x86(0xffffffffffffffff, r2, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x8, 0x0, 0x0) ioctl$KVM_RUN(r2, 0xae80, 0x16) [ 1097.418101] sysfs: cannot create duplicate filename '/fs/gfs2/_' [ 1097.438163] gfs2: fsid=_: can't read superblock [ 1097.443350] CPU: 1 PID: 20600 Comm: syz-executor4 Not tainted 4.20.0-next-20190103 #4 [ 1097.451340] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 1097.458971] gfs2: fsid=_: can't read superblock: -22 [ 1097.460686] Call Trace: [ 1097.460709] dump_stack+0x1db/0x2d0 [ 1097.460730] ? dump_stack_print_info.cold+0x20/0x20 [ 1097.460752] ? _raw_spin_unlock_irqrestore+0xa4/0xe0 [ 1097.482122] sysfs_warn_dup.cold+0x1c/0x31 [ 1097.486367] sysfs_create_dir_ns+0x2ce/0x330 [ 1097.490784] ? sysfs_create_mount_point+0xa0/0xa0 [ 1097.495646] ? do_raw_spin_trylock+0x270/0x270 [ 1097.500271] kobject_add_internal.cold+0x129/0x6d8 [ 1097.505227] ? kobj_ns_type_registered+0x60/0x60 [ 1097.505243] ? kfree_const+0x59/0x70 [ 1097.505257] ? rcu_read_lock_sched_held+0x110/0x130 [ 1097.505272] ? kfree+0x1fa/0x230 [ 1097.505290] ? kfree_const+0x5e/0x70 [ 1097.505310] kobject_init_and_add+0x101/0x160 [ 1097.505327] ? kobject_add_internal+0x4b0/0x4b0 [ 1097.505351] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 1097.530894] ? vsnprintf+0x368/0x1b10 [ 1097.544899] gfs2_sys_fs_add+0x210/0x500 [ 1097.548968] ? recover_store+0x1a0/0x1a0 [ 1097.553081] ? snprintf+0xbb/0xf0 [ 1097.556556] ? vsprintf+0x30/0x40 [ 1097.560040] ? set_blocksize+0x2bf/0x340 [ 1097.564128] ? memcpy+0x46/0x50 [ 1097.567441] fill_super+0x894/0x1990 [ 1097.570572] gfs2: not a GFS2 filesystem [ 1097.571184] ? gfs2_online_uevent+0x2d0/0x2d0 [ 1097.579643] ? snprintf+0xbb/0xf0 [ 1097.583105] ? vsprintf+0x40/0x40 [ 1097.586582] ? ns_capable_common+0x141/0x170 [ 1097.590994] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 1097.596014] ? set_blocksize+0x2bf/0x340 [ 1097.600094] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 1097.605654] gfs2_mount+0x5db/0x6ee [ 1097.609290] ? fill_super+0x1990/0x1990 [ 1097.613299] ? vfs_parse_fs_string+0x1c5/0x2b0 [ 1097.613317] ? vfs_parse_fs_param+0x4b0/0x4b0 [ 1097.613334] ? fill_super+0x1990/0x1990 [ 1097.613350] legacy_get_tree+0xf2/0x200 [ 1097.613371] vfs_get_tree+0x123/0x450 [ 1097.613389] do_mount+0x1622/0x2fa0 [ 1097.622453] ? copy_mount_string+0x40/0x40 [ 1097.622472] ? kmem_cache_alloc_trace+0x354/0x760 [ 1097.622507] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 1097.642073] ? copy_mount_options+0x30e/0x440 [ 1097.642097] ksys_mount+0xdb/0x150 [ 1097.642117] __x64_sys_mount+0xbe/0x150 [ 1097.642138] do_syscall_64+0x1a3/0x800 [ 1097.664491] ? syscall_return_slowpath+0x5f0/0x5f0 [ 1097.664512] ? prepare_exit_to_usermode+0x232/0x3b0 [ 1097.664537] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 1097.664564] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 1097.664589] RIP: 0033:0x45a93a [ 1097.664605] Code: b8 a6 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 ed 8c fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 0f 83 ca 8c fb ff c3 66 0f 1f 84 00 00 00 00 00 [ 1097.664613] RSP: 002b:00007ff699fe9a88 EFLAGS: 00000206 ORIG_RAX: 00000000000000a5 03:47:17 executing program 0: socketpair$unix(0x1, 0x1, 0x0, &(0x7f0000000440)={0xffffffffffffffff, 0xffffffffffffffff}) ioctl$PERF_EVENT_IOC_ENABLE(r0, 0x8912, 0x400200) r1 = openat$kvm(0xffffffffffffff9c, &(0x7f00000000c0)='/dev/kvm\x00', 0x0, 0x0) openat$dlm_monitor(0xffffffffffffff9c, &(0x7f0000000340)='/dev/dlm-monitor\x00', 0x0, 0x0) r2 = ioctl$KVM_CREATE_VM(r1, 0xae01, 0x0) r3 = ioctl$KVM_CREATE_VCPU(r2, 0xae41, 0x0) syz_kvm_setup_cpu$x86(r2, 0xffffffffffffffff, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x0, 0x0, 0x0) syz_kvm_setup_cpu$x86(0xffffffffffffffff, r3, &(0x7f0000000000/0x18000)=nil, &(0x7f00000001c0)=[@text64={0x40, &(0x7f0000000040)="b9800000c00f3235001000000f30f24c0f2c49e8426dc4027d3493b80800003626660f7e676d660f1678b06cc403f9dfbeb70000000bc7442400f5000000c744240284d178bcff1c24f2f347dbe1", 0x4e}], 0x1, 0x48, 0x0, 0x0) pipe2(&(0x7f0000000000), 0x0) ioctl$KVM_RUN(r3, 0xae80, 0x7) [ 1097.664628] RAX: ffffffffffffffda RBX: 00007ff699fe9b30 RCX: 000000000045a93a [ 1097.664637] RDX: 00007ff699fe9ad0 RSI: 0000000020000200 RDI: 00007ff699fe9af0 [ 1097.664646] RBP: 0000000020000200 R08: 00007ff699fe9b30 R09: 00007ff699fe9ad0 [ 1097.664654] R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000003 [ 1097.664677] R13: 0000000000000000 R14: 00000000004db380 R15: 00000000ffffffff [ 1097.724081] kobject_add_internal failed for _ with -EEXIST, don't try to register things with the same name in the same directory. [ 1097.773197] gfs2: fsid=_: error -17 adding sysfs files 03:47:17 executing program 3: syz_mount_image$gfs2(&(0x7f0000000140)='gfs2\x00', &(0x7f0000000200)='./file0\x00', 0x0, 0x0, 0x0, 0x0, &(0x7f00000003c0)={[{@locktable={'locktable', 0x3d, '/'}}, {@lockproto_nolock='lockproto=lock_nolock'}]}) 03:47:17 executing program 4: syz_mount_image$gfs2(&(0x7f0000000140)='gfs2\xdf', &(0x7f0000000200)='./file0\x00', 0x0, 0x0, 0x0, 0x0, &(0x7f00000003c0)={[{@locktable={'locktable', 0x3d, '/'}}, {@lockproto_nolock='lockproto=lock_nolock'}]}) socketpair$unix(0x1, 0x1, 0x0, &(0x7f0000000180)) [ 1097.924529] gfs2: not a GFS2 filesystem 03:47:17 executing program 1: r0 = openat$kvm(0xffffffffffffff9c, &(0x7f0000000140)='/dev/kvm\x00', 0x0, 0x0) r1 = ioctl$KVM_CREATE_VM(r0, 0xae01, 0x0) r2 = ioctl$KVM_CREATE_VCPU(r1, 0xae41, 0x0) ioctl$KVM_SET_USER_MEMORY_REGION(r1, 0x4020ae46, &(0x7f0000000400)={0x0, 0x3, 0x0, 0x2000, &(0x7f0000000000/0x2000)=nil}) syz_kvm_setup_cpu$x86(r1, 0xffffffffffffffff, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x0, 0x0, 0xfffffffffffffe78) sendmmsg$unix(0xffffffffffffffff, &(0x7f0000002780)=[{0x0, 0x0, &(0x7f0000001d00)=[{&(0x7f0000000bc0)="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", 0x3c5}], 0x1}], 0x1, 0x0) ioctl$KVM_REGISTER_COALESCED_MMIO(r1, 0x4010ae67, &(0x7f00000000c0)={0x0, 0x15200}) syz_kvm_setup_cpu$x86(0xffffffffffffffff, r2, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x8, 0x0, 0x0) ioctl$KVM_RUN(r2, 0xae80, 0xe803) 03:47:17 executing program 0: socketpair$unix(0x1, 0x1, 0x0, &(0x7f0000000440)={0xffffffffffffffff, 0xffffffffffffffff}) ioctl$PERF_EVENT_IOC_ENABLE(r0, 0x8912, 0x400200) r1 = openat$kvm(0xffffffffffffff9c, &(0x7f00000000c0)='/dev/kvm\x00', 0x0, 0x0) openat$dlm_monitor(0xffffffffffffff9c, &(0x7f0000000340)='/dev/dlm-monitor\x00', 0x0, 0x0) r2 = ioctl$KVM_CREATE_VM(r1, 0xae01, 0x0) r3 = ioctl$KVM_CREATE_VCPU(r2, 0xae41, 0x0) syz_kvm_setup_cpu$x86(r2, 0xffffffffffffffff, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x0, 0x0, 0x0) syz_kvm_setup_cpu$x86(0xffffffffffffffff, r3, &(0x7f0000000000/0x18000)=nil, &(0x7f00000001c0)=[@text64={0x40, &(0x7f0000000040)="b9800000c00f3235001000000f30f24c0f2c49e8426dc4027d3493b80800003626660f7e676d660f1678b06cc403f9dfbeb70000000bc7442400f5000000c744240284d178bcff1c24f2f347dbe1", 0x4e}], 0x1, 0x48, 0x0, 0x0) pipe2(&(0x7f0000000000), 0x0) ioctl$KVM_RUN(r3, 0xae80, 0x29) 03:47:17 executing program 2: syz_mount_image$gfs2(&(0x7f0000000140)='gfs2\x00', &(0x7f0000000200)='./file0\x00', 0x0, 0x0, 0x0, 0x0, 0x0) socketpair$unix(0x1, 0x0, 0x0, 0x0) r0 = syz_open_dev$cec(&(0x7f0000000000)='/dev/cec#\x00', 0x2, 0x2) ioctl$NBD_SET_FLAGS(r0, 0xab0a, 0x80000001) 03:47:17 executing program 5: r0 = socket$inet(0x2, 0x4000000000000001, 0x0) setsockopt$inet_tcp_int(r0, 0x6, 0x80000000000002, &(0x7f0000000040)=0x74, 0x4) bind$inet(r0, &(0x7f0000000180)={0x2, 0x4e23, @multicast1}, 0x10) sendto$inet(r0, 0x0, 0x0, 0x200007fd, &(0x7f0000e68000)={0x2, 0x4e23, @local}, 0x10) write$binfmt_elf64(r0, &(0x7f00000012c0)=ANY=[@ANYBLOB="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"], 0x1e9) mmap(&(0x7f0000000000/0xb36000)=nil, 0xb36000, 0x3, 0x8031, 0xffffffffffffffff, 0x0) sendmmsg$inet_sctp(r0, &(0x7f0000002600)=[{0x0, 0x0, &(0x7f0000000240)=[{&(0x7f0000000380)="d4", 0x1}], 0x1, 0x0, 0x0, 0xf00}], 0x1, 0x0) [ 1098.249353] gfs2: not a GFS2 filesystem [ 1098.254285] gfs2: fsid=_: Trying to join cluster "lock_nolock", "_" [ 1098.260700] gfs2: fsid=_: Now mounting FS... [ 1098.337945] gfs2: not a GFS2 filesystem [ 1098.356651] gfs2: not a GFS2 filesystem 03:47:18 executing program 1: r0 = openat$kvm(0xffffffffffffff9c, &(0x7f0000000140)='/dev/kvm\x00', 0x0, 0x0) r1 = ioctl$KVM_CREATE_VM(r0, 0xae01, 0x0) r2 = ioctl$KVM_CREATE_VCPU(r1, 0xae41, 0x0) ioctl$KVM_SET_USER_MEMORY_REGION(r1, 0x4020ae46, &(0x7f0000000400)={0x0, 0x3, 0x0, 0x2000, &(0x7f0000000000/0x2000)=nil}) syz_kvm_setup_cpu$x86(r1, 0xffffffffffffffff, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x0, 0x0, 0xfffffffffffffe78) sendmmsg$unix(0xffffffffffffffff, &(0x7f0000002780)=[{0x0, 0x0, &(0x7f0000001d00)=[{&(0x7f0000000bc0)="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", 0x3c5}], 0x1}], 0x1, 0x0) ioctl$KVM_REGISTER_COALESCED_MMIO(r1, 0x4010ae67, &(0x7f00000000c0)={0x0, 0x15200}) syz_kvm_setup_cpu$x86(0xffffffffffffffff, r2, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x8, 0x0, 0x0) ioctl$KVM_RUN(r2, 0xae80, 0xd810) [ 1098.382775] gfs2: fsid=_: can't read superblock [ 1098.387624] gfs2: fsid=_: can't read superblock: -22 03:47:18 executing program 2: syz_mount_image$gfs2(&(0x7f0000000040)='gfs2\x00', &(0x7f0000000200)='./file0\x00', 0x0, 0x0, 0x0, 0x0, 0x0) socketpair$unix(0x1, 0x0, 0x0, 0x0) r0 = syz_open_dev$cec(&(0x7f0000000000)='/dev/cec#\x00', 0x1, 0x2) write$UHID_CREATE2(r0, &(0x7f0000000480)={0xb, 'syz0\x00', 'syz1\x00', 'syz1\x00', 0xed, 0xfffffffffffffffe, 0x7, 0xffffffffffffff80, 0x5, 0x5, "ebd6a9d108c759e2dae00845b86a37d457a0a889b6542e24eb3c697465b3beead48ef29369cc45249db7265980becd3b5795237d78ec0d3b1a7aecf2dbddc1a81b754911ba01e908ab66a3e6a3a6d9c3cd7eb31d8be1031d1a5998ccf47be29d651a8ba6a1db013e62bb0fc9cc1ca29d1227b795be0ed0d15830b1db19e24c31346b623cf9c2c9a773f2695b644b64827ba2b6dd638c056e3da735e8b99821c998145d06a7c220c956b64e756a8b5310b65693c92b4928ac302a9f28ead434cedc5f2ecfeca643208bc79e2ae43545c546711e052eb4880fbe61697af928ede6b2c8d82f78d3da7d8677a41f9d"}, 0x205) 03:47:18 executing program 0: socketpair$unix(0x1, 0x1, 0x0, &(0x7f0000000440)={0xffffffffffffffff, 0xffffffffffffffff}) ioctl$PERF_EVENT_IOC_ENABLE(r0, 0x8912, 0x400200) r1 = openat$kvm(0xffffffffffffff9c, &(0x7f00000000c0)='/dev/kvm\x00', 0x0, 0x0) openat$dlm_monitor(0xffffffffffffff9c, &(0x7f0000000340)='/dev/dlm-monitor\x00', 0x0, 0x0) r2 = ioctl$KVM_CREATE_VM(r1, 0xae01, 0x0) r3 = ioctl$KVM_CREATE_VCPU(r2, 0xae41, 0x0) syz_kvm_setup_cpu$x86(r2, 0xffffffffffffffff, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x0, 0x0, 0x0) syz_kvm_setup_cpu$x86(0xffffffffffffffff, r3, &(0x7f0000000000/0x18000)=nil, &(0x7f00000001c0)=[@text64={0x40, &(0x7f0000000040)="b9800000c00f3235001000000f30f24c0f2c49e8426dc4027d3493b80800003626660f7e676d660f1678b06cc403f9dfbeb70000000bc7442400f5000000c744240284d178bcff1c24f2f347dbe1", 0x4e}], 0x1, 0x48, 0x0, 0x0) pipe2(&(0x7f0000000000), 0x0) ioctl$KVM_RUN(r3, 0xae80, 0xe803000000000000) 03:47:18 executing program 4: syz_mount_image$gfs2(&(0x7f0000000140)='gfs2\x00', &(0x7f0000000200)='./file0\x00', 0x0, 0x0, 0x0, 0x0, &(0x7f00000003c0)={[{@locktable={'locktable', 0x3d, '/'}}, {@lockproto_nolock='lockproto=lock_nolock'}]}) socketpair$unix(0x1, 0x1, 0x0, &(0x7f0000000180)) 03:47:18 executing program 1: r0 = openat$kvm(0xffffffffffffff9c, &(0x7f0000000140)='/dev/kvm\x00', 0x0, 0x0) r1 = ioctl$KVM_CREATE_VM(r0, 0xae01, 0x0) r2 = ioctl$KVM_CREATE_VCPU(r1, 0xae41, 0x0) ioctl$KVM_SET_USER_MEMORY_REGION(r1, 0x4020ae46, &(0x7f0000000400)={0x0, 0x3, 0x0, 0x2000, &(0x7f0000000000/0x2000)=nil}) syz_kvm_setup_cpu$x86(r1, 0xffffffffffffffff, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x0, 0x0, 0xfffffffffffffe78) sendmmsg$unix(0xffffffffffffffff, &(0x7f0000002780)=[{0x0, 0x0, &(0x7f0000001d00)=[{&(0x7f0000000bc0)="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", 0x3c5}], 0x1}], 0x1, 0x0) ioctl$KVM_REGISTER_COALESCED_MMIO(r1, 0x4010ae67, &(0x7f00000000c0)={0x0, 0x15200}) syz_kvm_setup_cpu$x86(0xffffffffffffffff, r2, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x8, 0x0, 0x0) ioctl$KVM_RUN(r2, 0xae80, 0x1d00) [ 1098.759800] gfs2: not a GFS2 filesystem [ 1098.814952] gfs2: fsid=_: Trying to join cluster "lock_nolock", "_" [ 1098.834969] gfs2: not a GFS2 filesystem [ 1098.889303] sysfs: cannot create duplicate filename '/fs/gfs2/_' [ 1098.903105] gfs2: fsid=_: Now mounting FS... 03:47:18 executing program 2: syz_mount_image$gfs2(&(0x7f0000000140)='gfs2\x00', &(0x7f0000000200)='./file0\x00', 0x0, 0x0, 0x0, 0x0, 0x0) socketpair$unix(0x1, 0x0, 0x0, 0x0) r0 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000000)='/dev/vcs\x00', 0x200801, 0x0) ioctl$VIDIOC_S_PARM(r0, 0xc0cc5616, &(0x7f0000000040)={0xb, @output={0x1000, 0x1, {0x7f, 0x3}, 0x1, 0x6}}) [ 1098.939219] gfs2: not a GFS2 filesystem [ 1098.961957] gfs2: fsid=_: can't read superblock [ 1098.977846] CPU: 1 PID: 20698 Comm: syz-executor4 Not tainted 4.20.0-next-20190103 #4 [ 1098.985829] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 1098.985837] Call Trace: [ 1098.985861] dump_stack+0x1db/0x2d0 [ 1098.985886] ? dump_stack_print_info.cold+0x20/0x20 [ 1098.985910] ? _raw_spin_unlock_irqrestore+0xa4/0xe0 [ 1098.985941] sysfs_warn_dup.cold+0x1c/0x31 [ 1099.012793] gfs2: fsid=_: can't read superblock: -22 [ 1099.015795] sysfs_create_dir_ns+0x2ce/0x330 [ 1099.015823] ? sysfs_create_mount_point+0xa0/0xa0 [ 1099.015841] ? do_raw_spin_trylock+0x270/0x270 [ 1099.034748] kobject_add_internal.cold+0x129/0x6d8 [ 1099.039694] ? kobj_ns_type_registered+0x60/0x60 [ 1099.044466] ? kfree_const+0x59/0x70 [ 1099.044483] ? rcu_read_lock_sched_held+0x110/0x130 [ 1099.044498] ? kfree+0x1fa/0x230 [ 1099.044517] ? kfree_const+0x5e/0x70 [ 1099.044550] kobject_init_and_add+0x101/0x160 [ 1099.044568] ? kobject_add_internal+0x4b0/0x4b0 [ 1099.044602] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 1099.044620] ? vsnprintf+0x368/0x1b10 [ 1099.056703] gfs2_sys_fs_add+0x210/0x500 [ 1099.056723] ? recover_store+0x1a0/0x1a0 [ 1099.086992] ? snprintf+0xbb/0xf0 [ 1099.090456] ? vsprintf+0x30/0x40 [ 1099.090474] ? set_blocksize+0x2bf/0x340 [ 1099.090493] ? memcpy+0x46/0x50 [ 1099.101277] fill_super+0x894/0x1990 [ 1099.105020] ? gfs2_online_uevent+0x2d0/0x2d0 [ 1099.109537] ? snprintf+0xbb/0xf0 [ 1099.113006] ? vsprintf+0x40/0x40 [ 1099.116487] ? ns_capable_common+0x141/0x170 [ 1099.118491] gfs2: not a GFS2 filesystem [ 1099.120933] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 1099.120947] ? set_blocksize+0x2bf/0x340 [ 1099.120964] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 1099.120981] gfs2_mount+0x5db/0x6ee [ 1099.120997] ? fill_super+0x1990/0x1990 [ 1099.129993] ? vfs_parse_fs_string+0x1c5/0x2b0 [ 1099.130010] ? vfs_parse_fs_param+0x4b0/0x4b0 [ 1099.143211] ? fill_super+0x1990/0x1990 [ 1099.143229] legacy_get_tree+0xf2/0x200 [ 1099.143252] vfs_get_tree+0x123/0x450 [ 1099.143272] do_mount+0x1622/0x2fa0 [ 1099.143297] ? copy_mount_string+0x40/0x40 [ 1099.143316] ? kmem_cache_alloc_trace+0x354/0x760 [ 1099.180787] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 1099.186368] ? _copy_from_user+0xdd/0x150 [ 1099.186386] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 1099.186401] ? copy_mount_options+0x30e/0x440 [ 1099.186422] ksys_mount+0xdb/0x150 [ 1099.186440] __x64_sys_mount+0xbe/0x150 [ 1099.186457] do_syscall_64+0x1a3/0x800 [ 1099.186474] ? syscall_return_slowpath+0x5f0/0x5f0 [ 1099.186489] ? prepare_exit_to_usermode+0x232/0x3b0 [ 1099.186509] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 1099.186534] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 1099.231952] RIP: 0033:0x45a93a [ 1099.235140] Code: b8 a6 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 ed 8c fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 0f 83 ca 8c fb ff c3 66 0f 1f 84 00 00 00 00 00 [ 1099.254032] RSP: 002b:00007ff699fe9a88 EFLAGS: 00000206 ORIG_RAX: 00000000000000a5 [ 1099.261780] RAX: ffffffffffffffda RBX: 00007ff699fe9b30 RCX: 000000000045a93a [ 1099.269051] RDX: 00007ff699fe9ad0 RSI: 0000000020000200 RDI: 00007ff699fe9af0 [ 1099.276341] RBP: 0000000020000200 R08: 00007ff699fe9b30 R09: 00007ff699fe9ad0 [ 1099.283617] R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000003 [ 1099.290875] R13: 0000000000000000 R14: 00000000004db380 R15: 00000000ffffffff 03:47:19 executing program 3: syz_mount_image$gfs2(&(0x7f0000000140)='gfs2\x00', &(0x7f0000000200)='./file0\x00', 0x0, 0x0, 0x0, 0x0, &(0x7f00000003c0)={[{@locktable={'locktable', 0x3d, '/'}}, {@lockproto_nolock='lockproto=lock_nolock'}]}) 03:47:19 executing program 1: r0 = openat$kvm(0xffffffffffffff9c, &(0x7f0000000140)='/dev/kvm\x00', 0x0, 0x0) r1 = ioctl$KVM_CREATE_VM(r0, 0xae01, 0x0) r2 = ioctl$KVM_CREATE_VCPU(r1, 0xae41, 0x0) ioctl$KVM_SET_USER_MEMORY_REGION(r1, 0x4020ae46, &(0x7f0000000400)={0x0, 0x3, 0x0, 0x2000, &(0x7f0000000000/0x2000)=nil}) syz_kvm_setup_cpu$x86(r1, 0xffffffffffffffff, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x0, 0x0, 0xfffffffffffffe78) sendmmsg$unix(0xffffffffffffffff, &(0x7f0000002780)=[{0x0, 0x0, &(0x7f0000001d00)=[{&(0x7f0000000bc0)="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", 0x3c5}], 0x1}], 0x1, 0x0) ioctl$KVM_REGISTER_COALESCED_MMIO(r1, 0x4010ae67, &(0x7f00000000c0)={0x0, 0x15200}) syz_kvm_setup_cpu$x86(0xffffffffffffffff, r2, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x8, 0x0, 0x0) ioctl$KVM_RUN(r2, 0xae80, 0x1e00000000000000) 03:47:19 executing program 0: socketpair$unix(0x1, 0x1, 0x0, &(0x7f0000000440)={0xffffffffffffffff, 0xffffffffffffffff}) ioctl$PERF_EVENT_IOC_ENABLE(r0, 0x8912, 0x400200) r1 = openat$kvm(0xffffffffffffff9c, &(0x7f00000000c0)='/dev/kvm\x00', 0x0, 0x0) openat$dlm_monitor(0xffffffffffffff9c, &(0x7f0000000340)='/dev/dlm-monitor\x00', 0x0, 0x0) r2 = ioctl$KVM_CREATE_VM(r1, 0xae01, 0x0) r3 = ioctl$KVM_CREATE_VCPU(r2, 0xae41, 0x0) syz_kvm_setup_cpu$x86(r2, 0xffffffffffffffff, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x0, 0x0, 0x0) syz_kvm_setup_cpu$x86(0xffffffffffffffff, r3, &(0x7f0000000000/0x18000)=nil, &(0x7f00000001c0)=[@text64={0x40, &(0x7f0000000040)="b9800000c00f3235001000000f30f24c0f2c49e8426dc4027d3493b80800003626660f7e676d660f1678b06cc403f9dfbeb70000000bc7442400f5000000c744240284d178bcff1c24f2f347dbe1", 0x4e}], 0x1, 0x48, 0x0, 0x0) pipe2(&(0x7f0000000000), 0x0) ioctl$KVM_RUN(r3, 0xae80, 0x2000000) 03:47:19 executing program 5: r0 = socket$inet(0x2, 0x4000000000000001, 0x0) setsockopt$inet_tcp_int(r0, 0x6, 0x80000000000002, &(0x7f0000000040)=0x74, 0x4) bind$inet(r0, &(0x7f0000000180)={0x2, 0x4e23, @multicast1}, 0x10) sendto$inet(r0, 0x0, 0x0, 0x200007fd, &(0x7f0000e68000)={0x2, 0x4e23, @local}, 0x10) write$binfmt_elf64(r0, &(0x7f00000012c0)=ANY=[@ANYBLOB="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"], 0x1f9) mmap(&(0x7f0000000000/0xb36000)=nil, 0xb36000, 0x3, 0x8031, 0xffffffffffffffff, 0x0) sendmmsg$inet_sctp(r0, &(0x7f0000002600)=[{0x0, 0x0, &(0x7f0000000240)=[{&(0x7f0000000380)="d4", 0x1}], 0x1, 0x0, 0x0, 0xf00}], 0x1, 0x0) [ 1099.370370] gfs2: not a GFS2 filesystem [ 1099.387805] kobject_add_internal failed for _ with -EEXIST, don't try to register things with the same name in the same directory. [ 1099.400768] gfs2: fsid=_: error -17 adding sysfs files 03:47:19 executing program 2: syz_mount_image$gfs2(&(0x7f0000000140)='gfs2\x00', &(0x7f0000000200)='./file0\x00', 0x0, 0x0, 0x0, 0x0, 0x0) r0 = openat$dlm_monitor(0xffffffffffffff9c, &(0x7f0000000180)='/dev/dlm-monitor\x00', 0x0, 0x0) getsockopt$inet6_IPV6_IPSEC_POLICY(0xffffffffffffffff, 0x29, 0x22, &(0x7f0000000240)={{{@in=@local, @in6=@ipv4={[], [], @initdev}, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0}}, {{@in6=@ipv4={[], [], @multicast1}}, 0x0, @in=@dev}}, &(0x7f0000000340)=0xe8) sendmsg$nl_route_sched(r0, &(0x7f0000000400)={&(0x7f00000001c0)={0x10, 0x0, 0x0, 0x800204}, 0xc, &(0x7f00000003c0)={&(0x7f0000000380)=@gettclass={0x24, 0x2a, 0x0, 0x70bd25, 0x25dfdbfd, {0x0, r1, {0xa, 0xf}, {0xfff2}, {0x0, 0xf}}, ["", "", ""]}, 0x24}, 0x1, 0x0, 0x0, 0x1}, 0x0) socketpair$unix(0x1, 0x0, 0x0, 0x0) setxattr$security_capability(&(0x7f0000000080)='./file0\x00', &(0x7f00000000c0)='security.capability\x00', &(0x7f0000000100)=@v2={0x2000000, [{0x7, 0xffff}, {0x400, 0xb1}]}, 0x14, 0x3) bpf$OBJ_GET_MAP(0x7, &(0x7f0000000040)={&(0x7f0000000000)='./file0\x00', 0x0, 0x18}, 0x10) 03:47:19 executing program 1: r0 = openat$kvm(0xffffffffffffff9c, &(0x7f0000000140)='/dev/kvm\x00', 0x0, 0x0) r1 = ioctl$KVM_CREATE_VM(r0, 0xae01, 0x0) r2 = ioctl$KVM_CREATE_VCPU(r1, 0xae41, 0x0) ioctl$KVM_SET_USER_MEMORY_REGION(r1, 0x4020ae46, &(0x7f0000000400)={0x0, 0x3, 0x0, 0x2000, &(0x7f0000000000/0x2000)=nil}) syz_kvm_setup_cpu$x86(r1, 0xffffffffffffffff, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x0, 0x0, 0xfffffffffffffe78) sendmmsg$unix(0xffffffffffffffff, &(0x7f0000002780)=[{0x0, 0x0, &(0x7f0000001d00)=[{&(0x7f0000000bc0)="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", 0x3c5}], 0x1}], 0x1, 0x0) ioctl$KVM_REGISTER_COALESCED_MMIO(r1, 0x4010ae67, &(0x7f00000000c0)={0x0, 0x15200}) syz_kvm_setup_cpu$x86(0xffffffffffffffff, r2, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x8, 0x0, 0x0) ioctl$KVM_RUN(r2, 0xae80, 0x1700000000000000) [ 1099.659629] gfs2: fsid=_: Trying to join cluster "lock_nolock", "_" [ 1099.721480] gfs2: not a GFS2 filesystem [ 1099.765441] gfs2: fsid=_: Now mounting FS... [ 1099.784517] sysfs: cannot create duplicate filename '/fs/gfs2/_' [ 1099.790676] CPU: 1 PID: 20741 Comm: syz-executor3 Not tainted 4.20.0-next-20190103 #4 [ 1099.798114] gfs2: not a GFS2 filesystem [ 1099.798655] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 1099.811997] Call Trace: 03:47:19 executing program 0: socketpair$unix(0x1, 0x1, 0x0, &(0x7f0000000440)={0xffffffffffffffff, 0xffffffffffffffff}) ioctl$PERF_EVENT_IOC_ENABLE(r0, 0x8912, 0x400200) r1 = openat$kvm(0xffffffffffffff9c, &(0x7f00000000c0)='/dev/kvm\x00', 0x0, 0x0) openat$dlm_monitor(0xffffffffffffff9c, &(0x7f0000000340)='/dev/dlm-monitor\x00', 0x0, 0x0) r2 = ioctl$KVM_CREATE_VM(r1, 0xae01, 0x0) r3 = ioctl$KVM_CREATE_VCPU(r2, 0xae41, 0x0) syz_kvm_setup_cpu$x86(r2, 0xffffffffffffffff, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x0, 0x0, 0x0) syz_kvm_setup_cpu$x86(0xffffffffffffffff, r3, &(0x7f0000000000/0x18000)=nil, &(0x7f00000001c0)=[@text64={0x40, &(0x7f0000000040)="b9800000c00f3235001000000f30f24c0f2c49e8426dc4027d3493b80800003626660f7e676d660f1678b06cc403f9dfbeb70000000bc7442400f5000000c744240284d178bcff1c24f2f347dbe1", 0x4e}], 0x1, 0x48, 0x0, 0x0) pipe2(&(0x7f0000000000), 0x0) ioctl$KVM_RUN(r3, 0xae80, 0xfec00) [ 1099.814587] dump_stack+0x1db/0x2d0 [ 1099.818227] ? dump_stack_print_info.cold+0x20/0x20 [ 1099.819086] gfs2: fsid=_: can't read superblock [ 1099.823247] ? _raw_spin_unlock_irqrestore+0x95/0xe0 [ 1099.823266] ? _raw_spin_unlock_irqrestore+0xa4/0xe0 [ 1099.823312] sysfs_warn_dup.cold+0x1c/0x31 [ 1099.823341] sysfs_create_dir_ns+0x2ce/0x330 [ 1099.823368] ? sysfs_create_mount_point+0xa0/0xa0 [ 1099.823383] ? do_raw_spin_trylock+0x270/0x270 [ 1099.823409] kobject_add_internal.cold+0x129/0x6d8 [ 1099.842487] ? kobj_ns_type_registered+0x60/0x60 [ 1099.851704] ? kfree_const+0x59/0x70 [ 1099.851719] ? rcu_read_lock_sched_held+0x110/0x130 [ 1099.851733] ? kfree+0x1fa/0x230 [ 1099.851748] ? kfree_const+0x5e/0x70 [ 1099.851765] kobject_init_and_add+0x101/0x160 [ 1099.862748] gfs2: fsid=_: can't read superblock: -22 [ 1099.866017] ? kobject_add_internal+0x4b0/0x4b0 [ 1099.866038] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 1099.866064] ? vsnprintf+0x368/0x1b10 [ 1099.866102] gfs2_sys_fs_add+0x210/0x500 [ 1099.866116] ? recover_store+0x1a0/0x1a0 [ 1099.913562] ? snprintf+0xbb/0xf0 [ 1099.917020] ? vsprintf+0x30/0x40 [ 1099.920484] ? set_blocksize+0x2bf/0x340 [ 1099.924568] ? memcpy+0x46/0x50 [ 1099.927856] fill_super+0x894/0x1990 [ 1099.931580] ? gfs2_online_uevent+0x2d0/0x2d0 [ 1099.936087] ? snprintf+0xbb/0xf0 [ 1099.939555] ? vsprintf+0x40/0x40 [ 1099.943031] ? ns_capable_common+0x141/0x170 [ 1099.947477] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 1099.952509] ? set_blocksize+0x2bf/0x340 [ 1099.956605] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 1099.962157] gfs2_mount+0x5db/0x6ee [ 1099.965798] ? fill_super+0x1990/0x1990 [ 1099.969838] ? vfs_parse_fs_string+0x1c5/0x2b0 [ 1099.974424] ? vfs_parse_fs_param+0x4b0/0x4b0 [ 1099.978923] ? fill_super+0x1990/0x1990 [ 1099.982906] legacy_get_tree+0xf2/0x200 [ 1099.982928] vfs_get_tree+0x123/0x450 [ 1099.982947] do_mount+0x1622/0x2fa0 [ 1099.982969] ? copy_mount_string+0x40/0x40 [ 1099.982986] ? kmem_cache_alloc_trace+0x354/0x760 [ 1099.983007] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 1100.003455] ? copy_mount_options+0x30e/0x440 [ 1100.003477] ksys_mount+0xdb/0x150 [ 1100.003496] __x64_sys_mount+0xbe/0x150 [ 1100.003515] do_syscall_64+0x1a3/0x800 [ 1100.003532] ? syscall_return_slowpath+0x5f0/0x5f0 [ 1100.003549] ? prepare_exit_to_usermode+0x232/0x3b0 [ 1100.034866] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 1100.034901] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 1100.034912] RIP: 0033:0x45a93a [ 1100.034926] Code: b8 a6 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 ed 8c fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 0f 83 ca 8c fb ff c3 66 0f 1f 84 00 00 00 00 00 [ 1100.034933] RSP: 002b:00007fdbfe5d2a88 EFLAGS: 00000206 ORIG_RAX: 00000000000000a5 [ 1100.034957] RAX: ffffffffffffffda RBX: 00007fdbfe5d2b30 RCX: 000000000045a93a [ 1100.034965] RDX: 00007fdbfe5d2ad0 RSI: 0000000020000200 RDI: 00007fdbfe5d2af0 [ 1100.034984] RBP: 0000000020000200 R08: 00007fdbfe5d2b30 R09: 00007fdbfe5d2ad0 [ 1100.034990] R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000003 [ 1100.034998] R13: 0000000000000000 R14: 00000000004db380 R15: 00000000ffffffff [ 1100.060151] kobject_add_internal failed for _ with -EEXIST, don't try to register things with the same name in the same directory. 03:47:19 executing program 2: syz_mount_image$gfs2(&(0x7f0000000140)='gfs2\x00', &(0x7f0000000200)='./file0\x00', 0x0, 0x0, 0x0, 0x0, 0x0) creat(&(0x7f0000000000)='./file0\x00', 0x161) socketpair$unix(0x1, 0x0, 0x0, 0x0) 03:47:19 executing program 4: syz_mount_image$gfs2(&(0x7f0000000140)='gfs2\x00', &(0x7f0000000200)='./file0\x00', 0x0, 0x0, 0x0, 0x0, &(0x7f00000003c0)={[{@locktable={'locktable', 0x3d, '/'}}, {@lockproto_nolock='lockproto=lock_nolock'}]}) socketpair$unix(0x1, 0x1, 0x0, &(0x7f0000000180)) [ 1100.207565] gfs2: fsid=_: error -17 adding sysfs files 03:47:19 executing program 1: r0 = openat$kvm(0xffffffffffffff9c, &(0x7f0000000140)='/dev/kvm\x00', 0x0, 0x0) r1 = ioctl$KVM_CREATE_VM(r0, 0xae01, 0x0) r2 = ioctl$KVM_CREATE_VCPU(r1, 0xae41, 0x0) ioctl$KVM_SET_USER_MEMORY_REGION(r1, 0x4020ae46, &(0x7f0000000400)={0x0, 0x3, 0x0, 0x2000, &(0x7f0000000000/0x2000)=nil}) syz_kvm_setup_cpu$x86(r1, 0xffffffffffffffff, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x0, 0x0, 0xfffffffffffffe78) sendmmsg$unix(0xffffffffffffffff, &(0x7f0000002780)=[{0x0, 0x0, &(0x7f0000001d00)=[{&(0x7f0000000bc0)="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", 0x3c5}], 0x1}], 0x1, 0x0) ioctl$KVM_REGISTER_COALESCED_MMIO(r1, 0x4010ae67, &(0x7f00000000c0)={0x0, 0x15200}) syz_kvm_setup_cpu$x86(0xffffffffffffffff, r2, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x8, 0x0, 0x0) ioctl$KVM_RUN(r2, 0xae80, 0x2000000) 03:47:19 executing program 0: socketpair$unix(0x1, 0x1, 0x0, &(0x7f0000000440)={0xffffffffffffffff, 0xffffffffffffffff}) ioctl$PERF_EVENT_IOC_ENABLE(r0, 0x8912, 0x400200) r1 = openat$kvm(0xffffffffffffff9c, &(0x7f00000000c0)='/dev/kvm\x00', 0x0, 0x0) openat$dlm_monitor(0xffffffffffffff9c, &(0x7f0000000340)='/dev/dlm-monitor\x00', 0x0, 0x0) r2 = ioctl$KVM_CREATE_VM(r1, 0xae01, 0x0) r3 = ioctl$KVM_CREATE_VCPU(r2, 0xae41, 0x0) syz_kvm_setup_cpu$x86(r2, 0xffffffffffffffff, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x0, 0x0, 0x0) syz_kvm_setup_cpu$x86(0xffffffffffffffff, r3, &(0x7f0000000000/0x18000)=nil, &(0x7f00000001c0)=[@text64={0x40, &(0x7f0000000040)="b9800000c00f3235001000000f30f24c0f2c49e8426dc4027d3493b80800003626660f7e676d660f1678b06cc403f9dfbeb70000000bc7442400f5000000c744240284d178bcff1c24f2f347dbe1", 0x4e}], 0x1, 0x48, 0x0, 0x0) pipe2(&(0x7f0000000000), 0x0) ioctl$KVM_RUN(r3, 0xae80, 0x200000000000000) [ 1100.360498] gfs2: not a GFS2 filesystem [ 1100.386589] gfs2: fsid=_: Trying to join cluster "lock_nolock", "_" [ 1100.424426] sysfs: cannot create duplicate filename '/fs/gfs2/_' [ 1100.430593] CPU: 1 PID: 20741 Comm: syz-executor3 Not tainted 4.20.0-next-20190103 #4 [ 1100.438557] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 1100.438575] Call Trace: [ 1100.438621] dump_stack+0x1db/0x2d0 [ 1100.438644] ? dump_stack_print_info.cold+0x20/0x20 [ 1100.438666] ? _raw_spin_unlock_irqrestore+0xa4/0xe0 [ 1100.438704] sysfs_warn_dup.cold+0x1c/0x31 [ 1100.438722] sysfs_create_dir_ns+0x2ce/0x330 [ 1100.438739] ? sysfs_create_mount_point+0xa0/0xa0 [ 1100.458500] gfs2: fsid=_: Now mounting FS... [ 1100.459282] ? do_raw_spin_trylock+0x270/0x270 [ 1100.473011] kobject_add_internal.cold+0x129/0x6d8 [ 1100.473033] ? kobj_ns_type_registered+0x60/0x60 [ 1100.473071] ? kfree_const+0x59/0x70 [ 1100.473086] ? rcu_read_lock_sched_held+0x110/0x130 [ 1100.473100] ? kfree+0x1fa/0x230 [ 1100.473128] ? kfree_const+0x5e/0x70 [ 1100.512428] kobject_init_and_add+0x101/0x160 [ 1100.516946] ? kobject_add_internal+0x4b0/0x4b0 [ 1100.521631] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 1100.527709] ? vsnprintf+0x368/0x1b10 [ 1100.527735] gfs2_sys_fs_add+0x210/0x500 [ 1100.527748] ? recover_store+0x1a0/0x1a0 [ 1100.539681] ? snprintf+0xbb/0xf0 [ 1100.540095] gfs2: not a GFS2 filesystem [ 1100.543137] ? vsprintf+0x30/0x40 [ 1100.543157] ? set_blocksize+0x2bf/0x340 [ 1100.543179] ? memcpy+0x46/0x50 [ 1100.543201] fill_super+0x894/0x1990 [ 1100.543270] ? gfs2_online_uevent+0x2d0/0x2d0 [ 1100.543291] ? snprintf+0xbb/0xf0 [ 1100.550700] ? vsprintf+0x40/0x40 [ 1100.550721] ? ns_capable_common+0x141/0x170 [ 1100.550733] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 1100.550757] ? set_blocksize+0x2bf/0x340 [ 1100.550772] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 1100.570038] gfs2: fsid=_: can't read superblock [ 1100.573154] gfs2_mount+0x5db/0x6ee [ 1100.573172] ? fill_super+0x1990/0x1990 [ 1100.573214] ? vfs_parse_fs_string+0x1c5/0x2b0 [ 1100.573232] ? vfs_parse_fs_param+0x4b0/0x4b0 [ 1100.573249] ? fill_super+0x1990/0x1990 [ 1100.611430] gfs2: fsid=_: can't read superblock: -22 [ 1100.613476] legacy_get_tree+0xf2/0x200 [ 1100.613497] vfs_get_tree+0x123/0x450 [ 1100.613515] do_mount+0x1622/0x2fa0 [ 1100.613537] ? copy_mount_string+0x40/0x40 [ 1100.613553] ? kmem_cache_alloc_trace+0x354/0x760 [ 1100.613574] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 1100.622622] ? copy_mount_options+0x30e/0x440 [ 1100.622644] ksys_mount+0xdb/0x150 [ 1100.622662] __x64_sys_mount+0xbe/0x150 [ 1100.622682] do_syscall_64+0x1a3/0x800 [ 1100.622699] ? syscall_return_slowpath+0x5f0/0x5f0 [ 1100.622740] ? prepare_exit_to_usermode+0x232/0x3b0 [ 1100.622773] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 1100.634160] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 1100.634173] RIP: 0033:0x45a93a [ 1100.634187] Code: b8 a6 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 ed 8c fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 0f 83 ca 8c fb ff c3 66 0f 1f 84 00 00 00 00 00 [ 1100.634197] RSP: 002b:00007fdbfe5d2a88 EFLAGS: 00000206 ORIG_RAX: 00000000000000a5 [ 1100.706546] RAX: ffffffffffffffda RBX: 00007fdbfe5d2b30 RCX: 000000000045a93a [ 1100.706555] RDX: 00007fdbfe5d2ad0 RSI: 0000000020000200 RDI: 00007fdbfe5d2af0 [ 1100.706564] RBP: 0000000020000200 R08: 00007fdbfe5d2b30 R09: 00007fdbfe5d2ad0 03:47:20 executing program 2: syz_mount_image$gfs2(&(0x7f0000000140)='gfs2\x00', &(0x7f0000000200)='./file0\x00', 0x0, 0x0, 0x0, 0x0, 0x0) socketpair$unix(0x1, 0x0, 0x0, 0x0) r0 = openat$mixer(0xffffffffffffff9c, &(0x7f0000000000)='/dev/mixer\x00', 0x0, 0x0) ioctl$BLKBSZSET(r0, 0x40081271, &(0x7f0000000040)=0x1) [ 1100.706572] R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000003 [ 1100.706592] R13: 0000000000000000 R14: 00000000004db380 R15: 00000000ffffffff [ 1100.751781] kobject_add_internal failed for _ with -EEXIST, don't try to register things with the same name in the same directory. [ 1100.764533] gfs2: fsid=_: error -17 adding sysfs files 03:47:20 executing program 3: syz_mount_image$gfs2(&(0x7f0000000140)='gfs2\x00', &(0x7f0000000200)='./file0\x00', 0x0, 0x0, 0x0, 0x0, &(0x7f00000003c0)={[{@locktable={'locktable', 0x3d, '/'}}, {@lockproto_nolock='lockproto=lock_nolock'}]}) 03:47:20 executing program 0: socketpair$unix(0x1, 0x1, 0x0, &(0x7f0000000440)={0xffffffffffffffff, 0xffffffffffffffff}) ioctl$PERF_EVENT_IOC_ENABLE(r0, 0x8912, 0x400200) r1 = openat$kvm(0xffffffffffffff9c, &(0x7f00000000c0)='/dev/kvm\x00', 0x0, 0x0) openat$dlm_monitor(0xffffffffffffff9c, &(0x7f0000000340)='/dev/dlm-monitor\x00', 0x0, 0x0) r2 = ioctl$KVM_CREATE_VM(r1, 0xae01, 0x0) r3 = ioctl$KVM_CREATE_VCPU(r2, 0xae41, 0x0) syz_kvm_setup_cpu$x86(r2, 0xffffffffffffffff, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x0, 0x0, 0x0) syz_kvm_setup_cpu$x86(0xffffffffffffffff, r3, &(0x7f0000000000/0x18000)=nil, &(0x7f00000001c0)=[@text64={0x40, &(0x7f0000000040)="b9800000c00f3235001000000f30f24c0f2c49e8426dc4027d3493b80800003626660f7e676d660f1678b06cc403f9dfbeb70000000bc7442400f5000000c744240284d178bcff1c24f2f347dbe1", 0x4e}], 0x1, 0x48, 0x0, 0x0) pipe2(&(0x7f0000000000), 0x0) ioctl$KVM_RUN(r3, 0xae80, 0x700000000000000) 03:47:20 executing program 5: r0 = socket$inet(0x2, 0x4000000000000001, 0x0) setsockopt$inet_tcp_int(r0, 0x6, 0x80000000000002, &(0x7f0000000040)=0x74, 0x4) bind$inet(r0, &(0x7f0000000180)={0x2, 0x4e23, @multicast1}, 0x10) sendto$inet(r0, 0x0, 0x0, 0x200007fd, &(0x7f0000e68000)={0x2, 0x4e23, @local}, 0x10) write$binfmt_elf64(r0, &(0x7f00000012c0)=ANY=[@ANYBLOB="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"], 0x1f9) mmap(&(0x7f0000000000/0xb36000)=nil, 0xb36000, 0x3, 0x8031, 0xffffffffffffffff, 0x0) sendmmsg$inet_sctp(r0, &(0x7f0000002600)=[{0x0, 0x0, &(0x7f0000000240)=[{&(0x7f0000000380)="d4", 0x1}], 0x1, 0x0, 0x0, 0xf00}], 0x1, 0x0) 03:47:20 executing program 1: r0 = openat$kvm(0xffffffffffffff9c, &(0x7f0000000140)='/dev/kvm\x00', 0x0, 0x0) r1 = ioctl$KVM_CREATE_VM(r0, 0xae01, 0x0) r2 = ioctl$KVM_CREATE_VCPU(r1, 0xae41, 0x0) ioctl$KVM_SET_USER_MEMORY_REGION(r1, 0x4020ae46, &(0x7f0000000400)={0x0, 0x3, 0x0, 0x2000, &(0x7f0000000000/0x2000)=nil}) syz_kvm_setup_cpu$x86(r1, 0xffffffffffffffff, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x0, 0x0, 0xfffffffffffffe78) sendmmsg$unix(0xffffffffffffffff, &(0x7f0000002780)=[{0x0, 0x0, &(0x7f0000001d00)=[{&(0x7f0000000bc0)="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", 0x3c5}], 0x1}], 0x1, 0x0) ioctl$KVM_REGISTER_COALESCED_MMIO(r1, 0x4010ae67, &(0x7f00000000c0)={0x0, 0x15200}) syz_kvm_setup_cpu$x86(0xffffffffffffffff, r2, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x8, 0x0, 0x0) ioctl$KVM_RUN(r2, 0xae80, 0x880f000000000000) 03:47:20 executing program 4: syz_mount_image$gfs2(&(0x7f0000000140)='gfs2\x00', &(0x7f0000000200)='./file0\x00', 0x0, 0x0, 0x0, 0x0, &(0x7f00000003c0)={[{@locktable={'locktable', 0x3d, '/'}}, {@lockproto_nolock='lockproto=lock_nolock'}]}) socketpair$unix(0x1, 0x1, 0x0, &(0x7f0000000180)) [ 1101.112246] gfs2: not a GFS2 filesystem [ 1101.158003] gfs2: fsid=_: Trying to join cluster "lock_nolock", "_" [ 1101.205020] gfs2: not a GFS2 filesystem [ 1101.209668] sysfs: cannot create duplicate filename '/fs/gfs2/_' [ 1101.235850] gfs2: fsid=_: Now mounting FS... [ 1101.271614] CPU: 0 PID: 20811 Comm: syz-executor4 Not tainted 4.20.0-next-20190103 #4 [ 1101.279638] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 1101.288990] Call Trace: [ 1101.291602] dump_stack+0x1db/0x2d0 [ 1101.295240] ? dump_stack_print_info.cold+0x20/0x20 [ 1101.295262] ? _raw_spin_unlock_irqrestore+0xa4/0xe0 [ 1101.295290] sysfs_warn_dup.cold+0x1c/0x31 [ 1101.295335] sysfs_create_dir_ns+0x2ce/0x330 [ 1101.295358] ? sysfs_create_mount_point+0xa0/0xa0 [ 1101.305463] ? do_raw_spin_trylock+0x270/0x270 [ 1101.305492] kobject_add_internal.cold+0x129/0x6d8 [ 1101.305512] ? kobj_ns_type_registered+0x60/0x60 [ 1101.305525] ? kfree_const+0x59/0x70 [ 1101.305537] ? rcu_read_lock_sched_held+0x110/0x130 [ 1101.305552] ? kfree+0x1fa/0x230 [ 1101.345305] ? kfree_const+0x5e/0x70 [ 1101.349055] kobject_init_and_add+0x101/0x160 [ 1101.353554] ? kobject_add_internal+0x4b0/0x4b0 [ 1101.358228] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 1101.363769] ? vsnprintf+0x368/0x1b10 [ 1101.367602] gfs2_sys_fs_add+0x210/0x500 [ 1101.371667] ? recover_store+0x1a0/0x1a0 [ 1101.375737] ? snprintf+0xbb/0xf0 [ 1101.379194] ? vsprintf+0x30/0x40 [ 1101.382650] ? set_blocksize+0x2bf/0x340 [ 1101.386715] ? memcpy+0x46/0x50 [ 1101.390001] fill_super+0x894/0x1990 [ 1101.393728] ? gfs2_online_uevent+0x2d0/0x2d0 [ 1101.398244] ? snprintf+0xbb/0xf0 [ 1101.401699] ? vsprintf+0x40/0x40 [ 1101.405162] ? ns_capable_common+0x141/0x170 [ 1101.409582] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 1101.414598] ? set_blocksize+0x2bf/0x340 [ 1101.418909] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 1101.424478] gfs2_mount+0x5db/0x6ee [ 1101.428110] ? fill_super+0x1990/0x1990 [ 1101.432127] ? vfs_parse_fs_string+0x1c5/0x2b0 [ 1101.436714] ? vfs_parse_fs_param+0x4b0/0x4b0 [ 1101.441221] ? fill_super+0x1990/0x1990 [ 1101.445200] legacy_get_tree+0xf2/0x200 [ 1101.449195] vfs_get_tree+0x123/0x450 [ 1101.453004] do_mount+0x1622/0x2fa0 [ 1101.456637] ? calibrate_delay.cold+0x47b/0x539 [ 1101.461319] ? copy_mount_string+0x40/0x40 [ 1101.465562] ? retint_kernel+0x2d/0x2d [ 1101.469489] ? copy_mount_options+0x244/0x440 [ 1101.473993] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 1101.479530] ? copy_mount_options+0x30e/0x440 [ 1101.484035] ksys_mount+0xdb/0x150 [ 1101.487601] __x64_sys_mount+0xbe/0x150 [ 1101.491597] do_syscall_64+0x1a3/0x800 [ 1101.495505] ? syscall_return_slowpath+0x5f0/0x5f0 [ 1101.500446] ? prepare_exit_to_usermode+0x232/0x3b0 [ 1101.505471] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 1101.510335] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 1101.515530] RIP: 0033:0x45a93a 03:47:21 executing program 5: r0 = socket$inet(0x2, 0x4000000000000001, 0x0) setsockopt$inet_tcp_int(r0, 0x6, 0x80000000000002, &(0x7f0000000040)=0x74, 0x4) bind$inet(r0, &(0x7f0000000180)={0x2, 0x4e23, @multicast1}, 0x10) sendto$inet(r0, 0x0, 0x0, 0x200007fd, &(0x7f0000e68000)={0x2, 0x4e23, @local}, 0x10) write$binfmt_elf64(r0, &(0x7f00000012c0)=ANY=[@ANYBLOB="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"], 0x1f9) mmap(&(0x7f0000000000/0xb36000)=nil, 0xb36000, 0x3, 0x8031, 0xffffffffffffffff, 0x0) sendmmsg$inet_sctp(r0, &(0x7f0000002600)=[{0x0, 0x0, &(0x7f0000000240)=[{&(0x7f0000000380)="d4", 0x1}], 0x1, 0x0, 0x0, 0xf00}], 0x1, 0x0) 03:47:21 executing program 1: r0 = openat$kvm(0xffffffffffffff9c, &(0x7f0000000140)='/dev/kvm\x00', 0x0, 0x0) r1 = ioctl$KVM_CREATE_VM(r0, 0xae01, 0x0) r2 = ioctl$KVM_CREATE_VCPU(r1, 0xae41, 0x0) ioctl$KVM_SET_USER_MEMORY_REGION(r1, 0x4020ae46, &(0x7f0000000400)={0x0, 0x3, 0x0, 0x2000, &(0x7f0000000000/0x2000)=nil}) syz_kvm_setup_cpu$x86(r1, 0xffffffffffffffff, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x0, 0x0, 0xfffffffffffffe78) sendmmsg$unix(0xffffffffffffffff, &(0x7f0000002780)=[{0x0, 0x0, &(0x7f0000001d00)=[{&(0x7f0000000bc0)="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", 0x3c5}], 0x1}], 0x1, 0x0) ioctl$KVM_REGISTER_COALESCED_MMIO(r1, 0x4010ae67, &(0x7f00000000c0)={0x0, 0x15200}) syz_kvm_setup_cpu$x86(0xffffffffffffffff, r2, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x8, 0x0, 0x0) ioctl$KVM_RUN(r2, 0xae80, 0x11000000) 03:47:21 executing program 0: socketpair$unix(0x1, 0x1, 0x0, &(0x7f0000000440)={0xffffffffffffffff, 0xffffffffffffffff}) ioctl$PERF_EVENT_IOC_ENABLE(r0, 0x8912, 0x400200) r1 = openat$kvm(0xffffffffffffff9c, &(0x7f00000000c0)='/dev/kvm\x00', 0x0, 0x0) openat$dlm_monitor(0xffffffffffffff9c, &(0x7f0000000340)='/dev/dlm-monitor\x00', 0x0, 0x0) r2 = ioctl$KVM_CREATE_VM(r1, 0xae01, 0x0) r3 = ioctl$KVM_CREATE_VCPU(r2, 0xae41, 0x0) syz_kvm_setup_cpu$x86(r2, 0xffffffffffffffff, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x0, 0x0, 0x0) syz_kvm_setup_cpu$x86(0xffffffffffffffff, r3, &(0x7f0000000000/0x18000)=nil, &(0x7f00000001c0)=[@text64={0x40, &(0x7f0000000040)="b9800000c00f3235001000000f30f24c0f2c49e8426dc4027d3493b80800003626660f7e676d660f1678b06cc403f9dfbeb70000000bc7442400f5000000c744240284d178bcff1c24f2f347dbe1", 0x4e}], 0x1, 0x48, 0x0, 0x0) pipe2(&(0x7f0000000000), 0x0) ioctl$KVM_RUN(r3, 0xae80, 0x500000000000000) [ 1101.518738] Code: b8 a6 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 ed 8c fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 0f 83 ca 8c fb ff c3 66 0f 1f 84 00 00 00 00 00 [ 1101.537640] RSP: 002b:00007ff699fe9a88 EFLAGS: 00000206 ORIG_RAX: 00000000000000a5 [ 1101.537654] RAX: ffffffffffffffda RBX: 00007ff699fe9b30 RCX: 000000000045a93a [ 1101.537660] RDX: 00007ff699fe9ad0 RSI: 0000000020000200 RDI: 00007ff699fe9af0 [ 1101.537668] RBP: 0000000020000200 R08: 00007ff699fe9b30 R09: 00007ff699fe9ad0 03:47:21 executing program 2: r0 = openat$apparmor_task_current(0xffffffffffffff9c, &(0x7f0000000000)='/proc/self/attr/current\x00', 0x2, 0x0) close(r0) syz_mount_image$gfs2(&(0x7f0000000140)='gfs2\x00', &(0x7f0000000200)='./file0\x00', 0x0, 0x0, 0x0, 0x0, 0x0) socketpair$unix(0x1, 0x0, 0x0, 0x0) [ 1101.537675] R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000003 [ 1101.537683] R13: 0000000000000000 R14: 00000000004db380 R15: 00000000ffffffff [ 1101.604030] gfs2: not a GFS2 filesystem [ 1101.620982] gfs2: fsid=_: can't read superblock [ 1101.644062] gfs2: fsid=_: can't read superblock: -22 [ 1101.696423] gfs2: not a GFS2 filesystem 03:47:21 executing program 1: r0 = openat$kvm(0xffffffffffffff9c, &(0x7f0000000140)='/dev/kvm\x00', 0x0, 0x0) r1 = ioctl$KVM_CREATE_VM(r0, 0xae01, 0x0) r2 = ioctl$KVM_CREATE_VCPU(r1, 0xae41, 0x0) ioctl$KVM_SET_USER_MEMORY_REGION(r1, 0x4020ae46, &(0x7f0000000400)={0x0, 0x3, 0x0, 0x2000, &(0x7f0000000000/0x2000)=nil}) syz_kvm_setup_cpu$x86(r1, 0xffffffffffffffff, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x0, 0x0, 0xfffffffffffffe78) sendmmsg$unix(0xffffffffffffffff, &(0x7f0000002780)=[{0x0, 0x0, &(0x7f0000001d00)=[{&(0x7f0000000bc0)="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", 0x3c5}], 0x1}], 0x1, 0x0) ioctl$KVM_REGISTER_COALESCED_MMIO(r1, 0x4010ae67, &(0x7f00000000c0)={0x0, 0x15200}) syz_kvm_setup_cpu$x86(0xffffffffffffffff, r2, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x8, 0x0, 0x0) ioctl$KVM_RUN(r2, 0xae80, 0x3f00) 03:47:21 executing program 0: socketpair$unix(0x1, 0x1, 0x0, &(0x7f0000000440)={0xffffffffffffffff, 0xffffffffffffffff}) ioctl$PERF_EVENT_IOC_ENABLE(r0, 0x8912, 0x400200) r1 = openat$kvm(0xffffffffffffff9c, &(0x7f00000000c0)='/dev/kvm\x00', 0x0, 0x0) openat$dlm_monitor(0xffffffffffffff9c, &(0x7f0000000340)='/dev/dlm-monitor\x00', 0x0, 0x0) r2 = ioctl$KVM_CREATE_VM(r1, 0xae01, 0x0) r3 = ioctl$KVM_CREATE_VCPU(r2, 0xae41, 0x0) syz_kvm_setup_cpu$x86(r2, 0xffffffffffffffff, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x0, 0x0, 0x0) syz_kvm_setup_cpu$x86(0xffffffffffffffff, r3, &(0x7f0000000000/0x18000)=nil, &(0x7f00000001c0)=[@text64={0x40, &(0x7f0000000040)="b9800000c00f3235001000000f30f24c0f2c49e8426dc4027d3493b80800003626660f7e676d660f1678b06cc403f9dfbeb70000000bc7442400f5000000c744240284d178bcff1c24f2f347dbe1", 0x4e}], 0x1, 0x48, 0x0, 0x0) pipe2(&(0x7f0000000000), 0x0) ioctl$KVM_RUN(r3, 0xae80, 0x1800) [ 1101.878221] gfs2: not a GFS2 filesystem [ 1101.879766] gfs2: fsid=_: Trying to join cluster "lock_nolock", "_" [ 1101.918705] gfs2: fsid=_: Now mounting FS... [ 1101.951801] gfs2: not a GFS2 filesystem 03:47:21 executing program 2: syz_mount_image$gfs2(&(0x7f0000000140)='gfs2\x00', &(0x7f0000000200)='./file0\x00', 0x0, 0x0, 0x0, 0x0, 0x0) socketpair$unix(0x1, 0x7, 0x0, 0x0) [ 1101.998977] gfs2: fsid=_: can't read superblock [ 1102.003913] kobject_add_internal failed for _ with -EEXIST, don't try to register things with the same name in the same directory. [ 1102.042327] gfs2: fsid=_: can't read superblock: -22 [ 1102.146629] gfs2: fsid=_: error -17 adding sysfs files 03:47:22 executing program 3: syz_mount_image$gfs2(&(0x7f0000000140)='gfs2\x00', &(0x7f0000000200)='./file0\x00', 0x0, 0x0, 0x0, 0x0, &(0x7f00000003c0)={[{@locktable={'locktable', 0x3d, '/'}}, {@lockproto_nolock='lockproto=lock_nolock'}]}) 03:47:22 executing program 1: r0 = openat$kvm(0xffffffffffffff9c, &(0x7f0000000140)='/dev/kvm\x00', 0x0, 0x0) r1 = ioctl$KVM_CREATE_VM(r0, 0xae01, 0x0) r2 = ioctl$KVM_CREATE_VCPU(r1, 0xae41, 0x0) ioctl$KVM_SET_USER_MEMORY_REGION(r1, 0x4020ae46, &(0x7f0000000400)={0x0, 0x3, 0x0, 0x2000, &(0x7f0000000000/0x2000)=nil}) syz_kvm_setup_cpu$x86(r1, 0xffffffffffffffff, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x0, 0x0, 0xfffffffffffffe78) sendmmsg$unix(0xffffffffffffffff, &(0x7f0000002780)=[{0x0, 0x0, &(0x7f0000001d00)=[{&(0x7f0000000bc0)="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", 0x3c5}], 0x1}], 0x1, 0x0) ioctl$KVM_REGISTER_COALESCED_MMIO(r1, 0x4010ae67, &(0x7f00000000c0)={0x0, 0x15200}) syz_kvm_setup_cpu$x86(0xffffffffffffffff, r2, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x8, 0x0, 0x0) ioctl$KVM_RUN(r2, 0xae80, 0x1d00000000000000) 03:47:22 executing program 4: syz_mount_image$gfs2(&(0x7f0000000140)='gfs2\xff', &(0x7f0000000200)='./file0\x00', 0x0, 0x0, 0x0, 0x0, &(0x7f00000003c0)={[{@locktable={'locktable', 0x3d, '/'}}, {@lockproto_nolock='lockproto=lock_nolock'}]}) socketpair$unix(0x1, 0x1, 0x0, &(0x7f0000000180)) 03:47:22 executing program 0: socketpair$unix(0x1, 0x1, 0x0, &(0x7f0000000440)={0xffffffffffffffff, 0xffffffffffffffff}) ioctl$PERF_EVENT_IOC_ENABLE(r0, 0x8912, 0x400200) r1 = openat$kvm(0xffffffffffffff9c, &(0x7f00000000c0)='/dev/kvm\x00', 0x0, 0x0) openat$dlm_monitor(0xffffffffffffff9c, &(0x7f0000000340)='/dev/dlm-monitor\x00', 0x0, 0x0) r2 = ioctl$KVM_CREATE_VM(r1, 0xae01, 0x0) r3 = ioctl$KVM_CREATE_VCPU(r2, 0xae41, 0x0) syz_kvm_setup_cpu$x86(r2, 0xffffffffffffffff, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x0, 0x0, 0x0) syz_kvm_setup_cpu$x86(0xffffffffffffffff, r3, &(0x7f0000000000/0x18000)=nil, &(0x7f00000001c0)=[@text64={0x40, &(0x7f0000000040)="b9800000c00f3235001000000f30f24c0f2c49e8426dc4027d3493b80800003626660f7e676d660f1678b06cc403f9dfbeb70000000bc7442400f5000000c744240284d178bcff1c24f2f347dbe1", 0x4e}], 0x1, 0x48, 0x0, 0x0) pipe2(&(0x7f0000000000), 0x0) ioctl$KVM_RUN(r3, 0xae80, 0x3e8) [ 1102.293999] gfs2: not a GFS2 filesystem 03:47:22 executing program 2: syz_mount_image$gfs2(&(0x7f0000000140)='gfs2\x00', &(0x7f0000000200)='./file0\x00', 0x0, 0x0, 0x0, 0x0, 0x0) r0 = socket$nl_xfrm(0x10, 0x3, 0x6) pwrite64(r0, &(0x7f0000000180)="b5f418a83e5db752a2670c96b65e5d6a878d65b52edbb10373e729c102bc64e87fd04e4ede53b6eac67a89a11ac5481729e0571b5e8e111b29a008dc59200b18247abba9519f28ded854e8ed14e606cd96b857c7c97a09a3ab3600207749a6642a3eaa7b4d325ce1", 0x68, 0x0) socketpair$unix(0x1, 0x0, 0x0, 0x0) r1 = openat$vsock(0xffffffffffffff9c, &(0x7f00000000c0)='/dev/vsock\x00', 0x412b00, 0x0) r2 = dup2(0xffffffffffffff9c, r1) ioctl$DRM_IOCTL_ADD_CTX(0xffffffffffffffff, 0xc0086420, &(0x7f0000000040)={0x0}) ioctl$DRM_IOCTL_RM_CTX(r2, 0xc0086421, &(0x7f0000000080)={r3, 0x1}) prctl$PR_GET_FPEMU(0x9, &(0x7f0000000000)) 03:47:22 executing program 5: r0 = socket$inet(0x2, 0x4000000000000001, 0x0) setsockopt$inet_tcp_int(r0, 0x6, 0x80000000000002, &(0x7f0000000040)=0x74, 0x4) bind$inet(r0, &(0x7f0000000180)={0x2, 0x4e23, @multicast1}, 0x10) sendto$inet(r0, 0x0, 0x0, 0x200007fd, &(0x7f0000e68000)={0x2, 0x4e23, @local}, 0x10) write$binfmt_elf64(r0, &(0x7f00000012c0)=ANY=[@ANYBLOB="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"], 0x201) mmap(&(0x7f0000000000/0xb36000)=nil, 0xb36000, 0x3, 0x8031, 0xffffffffffffffff, 0x0) sendmmsg$inet_sctp(r0, &(0x7f0000002600)=[{0x0, 0x0, &(0x7f0000000240)=[{&(0x7f0000000380)="d4", 0x1}], 0x1, 0x0, 0x0, 0xf00}], 0x1, 0x0) 03:47:22 executing program 1: r0 = openat$kvm(0xffffffffffffff9c, &(0x7f0000000140)='/dev/kvm\x00', 0x0, 0x0) r1 = ioctl$KVM_CREATE_VM(r0, 0xae01, 0x0) r2 = ioctl$KVM_CREATE_VCPU(r1, 0xae41, 0x0) ioctl$KVM_SET_USER_MEMORY_REGION(r1, 0x4020ae46, &(0x7f0000000400)={0x0, 0x3, 0x0, 0x2000, &(0x7f0000000000/0x2000)=nil}) syz_kvm_setup_cpu$x86(r1, 0xffffffffffffffff, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x0, 0x0, 0xfffffffffffffe78) sendmmsg$unix(0xffffffffffffffff, &(0x7f0000002780)=[{0x0, 0x0, &(0x7f0000001d00)=[{&(0x7f0000000bc0)="b474ac0450ac6a2ff5ba4c1a19990e818d6fb646a5739e09c636550fdd39d0316e215a5a9427ac426da0b375844fb7f5ee5130d0b57cdab9af6f5f0d39c1787ec9ecde6263664c6a9859b7a0c4cbc99a05184da950f370cf65a18bff7975c0c12ca4227baa2164d031a5472d7f581c6f7eedd103d8fc89b6b4b52e5d3da0817eec8c57f722e356068b99a056ab6a693b9eebe38d75170491e07f9f69573b02b1a048f29e39cd24fed99e8606ffcbe4f617f48370ec62bd327cdfb9da8e8fef232b2e8f8f6868bb1781eab4c294befd65d9a336123bd34be8f256b5fc0420aa6e930f292a9a06365daaebd0bcaaaf5e0c12167aad0c62a48666383ee58b37df8077c5d2d5298d5247e240a78ff2543147129775f6d4a872df80d9da66c2a0a169df65141cbe88b1e280d60f6e11b25a0b5bb1bdd430378761d547f3ff7e42cc84c849e66004e30905d908e352a53f95bca84a68a6ce5ee82b69c939a196a7060bee28d8dee1ed52ae04b228bedf9302df44cc957780e42c2784d18e3695ee5e73dbe385331494af3cbcf8952e85469e9566c32692c0ceae8dab7b9553b5e8aa66edbad2ed828ba2a665a48a2822d9dc538863aea705c926c5a12fee84db545a36a13281e09e82c06211cc195cb4409bedfb7cf22f6c01fba9720bc4f447da73bb95bab6c056ce51bbc9d5b6622c54152e853f9639d2db2a5992e0f0e8f77a2e5efcfd139869cbdc902622399035d6ab8c22e33605be6850356be97ac05588720e1e215fbf5cb6633f0894e0a4dbd28708cac77792a31b00f47d18cebcb9114f1b0ffd66b587c5f9ba086fc530c6a0ac561068de208f18a3b6adc47f04bd63bd4a31544eb953398ddee5b5e4533aa529947aa46e7e517ff719e559c106f8afc570019f272a9f2d2699c7384612854de44dc40bb33aafee4e5fab1c06ceeffec56782452589f80c3946e6631c591e7f82af7e3a6422e0f35b0847f0a3049ee29b09f8aadf59c96a99576be85d6ddcf8c4d82373355add27397517402a56fd36bf877a53731413c30786431262705fb01511a778482cd85b60323b683e0e9d2f06b57678ddcf06f6da03f818e7f0b4db7045527f6e00fa26fe586fe0fcc72024fad6bab1739f6d7980d21f1fac0e7f53ee4cb254349b93a89f5695be91e5c586411b18f3f11298d979abdf4dd4796b181e623189aa73182c4c5ff346545168a520241ce23e08ade26085f654537258efaacfe1a64b2261c5180eb7c01ca6f4dc0f08f98ec12c06036278eff4c8d3b852bb2022be745861268ffbe0bb37c45452d2ac97aa6cb81db9f428688e6eab0e85ba6eb2eaecf4e8e137a2101f04b201258a71d857194610", 0x3c5}], 0x1}], 0x1, 0x0) ioctl$KVM_REGISTER_COALESCED_MMIO(r1, 0x4010ae67, &(0x7f00000000c0)={0x0, 0x15200}) syz_kvm_setup_cpu$x86(0xffffffffffffffff, r2, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x8, 0x0, 0x0) ioctl$KVM_RUN(r2, 0xae80, 0x1300000000000000) [ 1102.579887] gfs2: fsid=_: Trying to join cluster "lock_nolock", "_" [ 1102.630996] gfs2: fsid=_: Now mounting FS... [ 1102.644125] gfs2: not a GFS2 filesystem 03:47:22 executing program 4: syz_mount_image$gfs2(&(0x7f0000000140)='gfs2\x00', &(0x7f0000000200)='./file0\x00', 0x3f000000, 0x0, 0x0, 0x0, &(0x7f00000003c0)={[{@locktable={'locktable', 0x3d, '/'}}, {@lockproto_nolock='lockproto=lock_nolock'}]}) socketpair$unix(0x1, 0x1, 0x0, &(0x7f0000000180)) [ 1102.675629] gfs2: fsid=_: can't read superblock [ 1102.680799] gfs2: not a GFS2 filesystem [ 1102.708570] gfs2: fsid=_: can't read superblock: -22 03:47:22 executing program 0: socketpair$unix(0x1, 0x1, 0x0, &(0x7f0000000440)={0xffffffffffffffff, 0xffffffffffffffff}) ioctl$PERF_EVENT_IOC_ENABLE(r0, 0x8912, 0x400200) r1 = openat$kvm(0xffffffffffffff9c, &(0x7f00000000c0)='/dev/kvm\x00', 0x0, 0x0) openat$dlm_monitor(0xffffffffffffff9c, &(0x7f0000000340)='/dev/dlm-monitor\x00', 0x0, 0x0) r2 = ioctl$KVM_CREATE_VM(r1, 0xae01, 0x0) r3 = ioctl$KVM_CREATE_VCPU(r2, 0xae41, 0x0) syz_kvm_setup_cpu$x86(r2, 0xffffffffffffffff, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x0, 0x0, 0x0) syz_kvm_setup_cpu$x86(0xffffffffffffffff, r3, &(0x7f0000000000/0x18000)=nil, &(0x7f00000001c0)=[@text64={0x40, &(0x7f0000000040)="b9800000c00f3235001000000f30f24c0f2c49e8426dc4027d3493b80800003626660f7e676d660f1678b06cc403f9dfbeb70000000bc7442400f5000000c744240284d178bcff1c24f2f347dbe1", 0x4e}], 0x1, 0x48, 0x0, 0x0) pipe2(&(0x7f0000000000), 0x0) ioctl$KVM_RUN(r3, 0xae80, 0x3) 03:47:22 executing program 1: r0 = openat$kvm(0xffffffffffffff9c, &(0x7f0000000140)='/dev/kvm\x00', 0x0, 0x0) r1 = ioctl$KVM_CREATE_VM(r0, 0xae01, 0x0) r2 = ioctl$KVM_CREATE_VCPU(r1, 0xae41, 0x0) ioctl$KVM_SET_USER_MEMORY_REGION(r1, 0x4020ae46, &(0x7f0000000400)={0x0, 0x3, 0x0, 0x2000, &(0x7f0000000000/0x2000)=nil}) syz_kvm_setup_cpu$x86(r1, 0xffffffffffffffff, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x0, 0x0, 0xfffffffffffffe78) sendmmsg$unix(0xffffffffffffffff, &(0x7f0000002780)=[{0x0, 0x0, &(0x7f0000001d00)=[{&(0x7f0000000bc0)="b474ac0450ac6a2ff5ba4c1a19990e818d6fb646a5739e09c636550fdd39d0316e215a5a9427ac426da0b375844fb7f5ee5130d0b57cdab9af6f5f0d39c1787ec9ecde6263664c6a9859b7a0c4cbc99a05184da950f370cf65a18bff7975c0c12ca4227baa2164d031a5472d7f581c6f7eedd103d8fc89b6b4b52e5d3da0817eec8c57f722e356068b99a056ab6a693b9eebe38d75170491e07f9f69573b02b1a048f29e39cd24fed99e8606ffcbe4f617f48370ec62bd327cdfb9da8e8fef232b2e8f8f6868bb1781eab4c294befd65d9a336123bd34be8f256b5fc0420aa6e930f292a9a06365daaebd0bcaaaf5e0c12167aad0c62a48666383ee58b37df8077c5d2d5298d5247e240a78ff2543147129775f6d4a872df80d9da66c2a0a169df65141cbe88b1e280d60f6e11b25a0b5bb1bdd430378761d547f3ff7e42cc84c849e66004e30905d908e352a53f95bca84a68a6ce5ee82b69c939a196a7060bee28d8dee1ed52ae04b228bedf9302df44cc957780e42c2784d18e3695ee5e73dbe385331494af3cbcf8952e85469e9566c32692c0ceae8dab7b9553b5e8aa66edbad2ed828ba2a665a48a2822d9dc538863aea705c926c5a12fee84db545a36a13281e09e82c06211cc195cb4409bedfb7cf22f6c01fba9720bc4f447da73bb95bab6c056ce51bbc9d5b6622c54152e853f9639d2db2a5992e0f0e8f77a2e5efcfd139869cbdc902622399035d6ab8c22e33605be6850356be97ac05588720e1e215fbf5cb6633f0894e0a4dbd28708cac77792a31b00f47d18cebcb9114f1b0ffd66b587c5f9ba086fc530c6a0ac561068de208f18a3b6adc47f04bd63bd4a31544eb953398ddee5b5e4533aa529947aa46e7e517ff719e559c106f8afc570019f272a9f2d2699c7384612854de44dc40bb33aafee4e5fab1c06ceeffec56782452589f80c3946e6631c591e7f82af7e3a6422e0f35b0847f0a3049ee29b09f8aadf59c96a99576be85d6ddcf8c4d82373355add27397517402a56fd36bf877a53731413c30786431262705fb01511a778482cd85b60323b683e0e9d2f06b57678ddcf06f6da03f818e7f0b4db7045527f6e00fa26fe586fe0fcc72024fad6bab1739f6d7980d21f1fac0e7f53ee4cb254349b93a89f5695be91e5c586411b18f3f11298d979abdf4dd4796b181e623189aa73182c4c5ff346545168a520241ce23e08ade26085f654537258efaacfe1a64b2261c5180eb7c01ca6f4dc0f08f98ec12c06036278eff4c8d3b852bb2022be745861268ffbe0bb37c45452d2ac97aa6cb81db9f428688e6eab0e85ba6eb2eaecf4e8e137a2101f04b201258a71d857194610", 0x3c5}], 0x1}], 0x1, 0x0) ioctl$KVM_REGISTER_COALESCED_MMIO(r1, 0x4010ae67, &(0x7f00000000c0)={0x0, 0x15200}) syz_kvm_setup_cpu$x86(0xffffffffffffffff, r2, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x8, 0x0, 0x0) ioctl$KVM_RUN(r2, 0xae80, 0x800f000000000000) 03:47:22 executing program 2: syz_mount_image$gfs2(&(0x7f0000000140)='gfs2\x00', &(0x7f0000000200)='./file0\x00', 0x0, 0x0, 0x0, 0x0, 0x0) socketpair$unix(0x1, 0x7, 0x0, &(0x7f0000000000)) r0 = syz_open_dev$dspn(&(0x7f0000000180)='/dev/dsp#\x00', 0x2, 0x800) getsockopt$MISDN_TIME_STAMP(r0, 0x0, 0x1, &(0x7f00000001c0), &(0x7f0000000240)=0x4) r1 = openat$vfio(0xffffffffffffff9c, &(0x7f0000000040)='/dev/vfio/vfio\x00', 0x181000, 0x0) ioctl$KVM_ASSIGN_PCI_DEVICE(r1, 0x8040ae69, &(0x7f0000000080)={0x5, 0x8001, 0x14, 0x2, 0xfff}) socketpair$unix(0x1, 0x5, 0x0, 0x0) ioctl$SNDRV_SEQ_IOCTL_SET_CLIENT_POOL(r1, 0x4058534c, &(0x7f00000000c0)={0x8, 0x7fff, 0x10000, 0x4, 0xffffffffffffffff, 0x6}) [ 1102.984683] gfs2: fsid=_: Trying to join cluster "lock_nolock", "_" [ 1103.032089] gfs2: fsid=_: Now mounting FS... [ 1103.091357] sysfs: cannot create duplicate filename '/fs/gfs2/_' [ 1103.098977] gfs2: not a GFS2 filesystem [ 1103.113876] gfs2: fsid=_: can't read superblock [ 1103.118700] gfs2: not a GFS2 filesystem [ 1103.137365] CPU: 0 PID: 20926 Comm: syz-executor4 Not tainted 4.20.0-next-20190103 #4 [ 1103.145358] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 1103.154705] Call Trace: [ 1103.157306] dump_stack+0x1db/0x2d0 [ 1103.157533] gfs2: fsid=_: can't read superblock: -22 [ 1103.160973] ? dump_stack_print_info.cold+0x20/0x20 [ 1103.160998] ? _raw_spin_unlock_irqrestore+0xa4/0xe0 [ 1103.176223] sysfs_warn_dup.cold+0x1c/0x31 [ 1103.180470] sysfs_create_dir_ns+0x2ce/0x330 [ 1103.184891] ? sysfs_create_mount_point+0xa0/0xa0 [ 1103.189739] ? do_raw_spin_trylock+0x270/0x270 [ 1103.194342] kobject_add_internal.cold+0x129/0x6d8 [ 1103.194362] ? kobj_ns_type_registered+0x60/0x60 [ 1103.194378] ? kfree_const+0x59/0x70 [ 1103.207764] ? rcu_read_lock_sched_held+0x110/0x130 [ 1103.212781] ? kfree+0x1fa/0x230 [ 1103.212798] ? kfree_const+0x5e/0x70 [ 1103.212816] kobject_init_and_add+0x101/0x160 [ 1103.212834] ? kobject_add_internal+0x4b0/0x4b0 [ 1103.229034] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 1103.229061] ? vsnprintf+0x368/0x1b10 [ 1103.229087] gfs2_sys_fs_add+0x210/0x500 [ 1103.242449] ? recover_store+0x1a0/0x1a0 [ 1103.246576] ? snprintf+0xbb/0xf0 [ 1103.250029] ? vsprintf+0x30/0x40 [ 1103.250058] ? set_blocksize+0x2bf/0x340 [ 1103.250081] ? memcpy+0x46/0x50 [ 1103.260880] fill_super+0x894/0x1990 [ 1103.264611] ? gfs2_online_uevent+0x2d0/0x2d0 [ 1103.269131] ? snprintf+0xbb/0xf0 [ 1103.272616] ? vsprintf+0x40/0x40 [ 1103.276119] ? ns_capable_common+0x141/0x170 [ 1103.280593] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 1103.285607] ? set_blocksize+0x2bf/0x340 [ 1103.289686] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 1103.295229] gfs2_mount+0x5db/0x6ee [ 1103.298862] ? fill_super+0x1990/0x1990 [ 1103.302871] ? vfs_parse_fs_string+0x1c5/0x2b0 [ 1103.307450] ? vfs_parse_fs_param+0x4b0/0x4b0 [ 1103.311939] ? fill_super+0x1990/0x1990 [ 1103.315912] legacy_get_tree+0xf2/0x200 [ 1103.319886] vfs_get_tree+0x123/0x450 [ 1103.323708] do_mount+0x1622/0x2fa0 [ 1103.327370] ? copy_mount_string+0x40/0x40 [ 1103.331604] ? kmem_cache_alloc_trace+0x354/0x760 [ 1103.336442] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 1103.341971] ? _copy_from_user+0xdd/0x150 [ 1103.346131] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 1103.351663] ? copy_mount_options+0x30e/0x440 [ 1103.356163] ksys_mount+0xdb/0x150 [ 1103.359705] __x64_sys_mount+0xbe/0x150 [ 1103.363690] do_syscall_64+0x1a3/0x800 [ 1103.367576] ? syscall_return_slowpath+0x5f0/0x5f0 [ 1103.372505] ? prepare_exit_to_usermode+0x232/0x3b0 [ 1103.377524] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 1103.382373] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 1103.387554] RIP: 0033:0x45a93a [ 1103.390749] Code: b8 a6 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 ed 8c fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 0f 83 ca 8c fb ff c3 66 0f 1f 84 00 00 00 00 00 [ 1103.409640] RSP: 002b:00007ff699fe9a88 EFLAGS: 00000206 ORIG_RAX: 00000000000000a5 [ 1103.417358] RAX: ffffffffffffffda RBX: 00007ff699fe9b30 RCX: 000000000045a93a [ 1103.424897] RDX: 00007ff699fe9ad0 RSI: 0000000020000200 RDI: 00007ff699fe9af0 [ 1103.432159] RBP: 0000000020000200 R08: 00007ff699fe9b30 R09: 00007ff699fe9ad0 03:47:23 executing program 0: socketpair$unix(0x1, 0x1, 0x0, &(0x7f0000000440)={0xffffffffffffffff, 0xffffffffffffffff}) ioctl$PERF_EVENT_IOC_ENABLE(r0, 0x8912, 0x400200) r1 = openat$kvm(0xffffffffffffff9c, &(0x7f00000000c0)='/dev/kvm\x00', 0x0, 0x0) openat$dlm_monitor(0xffffffffffffff9c, &(0x7f0000000340)='/dev/dlm-monitor\x00', 0x0, 0x0) r2 = ioctl$KVM_CREATE_VM(r1, 0xae01, 0x0) r3 = ioctl$KVM_CREATE_VCPU(r2, 0xae41, 0x0) syz_kvm_setup_cpu$x86(r2, 0xffffffffffffffff, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x0, 0x0, 0x0) syz_kvm_setup_cpu$x86(0xffffffffffffffff, r3, &(0x7f0000000000/0x18000)=nil, &(0x7f00000001c0)=[@text64={0x40, &(0x7f0000000040)="b9800000c00f3235001000000f30f24c0f2c49e8426dc4027d3493b80800003626660f7e676d660f1678b06cc403f9dfbeb70000000bc7442400f5000000c744240284d178bcff1c24f2f347dbe1", 0x4e}], 0x1, 0x48, 0x0, 0x0) pipe2(&(0x7f0000000000), 0x0) ioctl$KVM_RUN(r3, 0xae80, 0xc) [ 1103.439417] R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000003 [ 1103.446676] R13: 0000000000000000 R14: 00000000004db380 R15: 00000000ffffffff 03:47:23 executing program 3: syz_mount_image$gfs2(&(0x7f0000000140)='gfs2\x00', &(0x7f0000000200)='./file0\x00', 0x0, 0x0, 0x0, 0x0, &(0x7f00000003c0)={[{@locktable={'locktable', 0x3d, '/'}}, {@lockproto_nolock='lockproto=lock_nolock'}]}) [ 1103.510817] kobject_add_internal failed for _ with -EEXIST, don't try to register things with the same name in the same directory. [ 1103.528927] gfs2: fsid=_: error -17 adding sysfs files 03:47:23 executing program 5: r0 = socket$inet(0x2, 0x4000000000000001, 0x0) setsockopt$inet_tcp_int(r0, 0x6, 0x80000000000002, &(0x7f0000000040)=0x74, 0x4) bind$inet(r0, &(0x7f0000000180)={0x2, 0x4e23, @multicast1}, 0x10) sendto$inet(r0, 0x0, 0x0, 0x200007fd, &(0x7f0000e68000)={0x2, 0x4e23, @local}, 0x10) write$binfmt_elf64(r0, &(0x7f00000012c0)=ANY=[@ANYBLOB="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"], 0x201) mmap(&(0x7f0000000000/0xb36000)=nil, 0xb36000, 0x3, 0x8031, 0xffffffffffffffff, 0x0) sendmmsg$inet_sctp(r0, &(0x7f0000002600)=[{0x0, 0x0, &(0x7f0000000240)=[{&(0x7f0000000380)="d4", 0x1}], 0x1, 0x0, 0x0, 0xf00}], 0x1, 0x0) [ 1103.669528] gfs2: not a GFS2 filesystem [ 1103.676677] gfs2: fsid=_: Trying to join cluster "lock_nolock", "_" [ 1103.709399] sysfs: cannot create duplicate filename '/fs/gfs2/_' 03:47:23 executing program 1: r0 = openat$kvm(0xffffffffffffff9c, &(0x7f0000000140)='/dev/kvm\x00', 0x0, 0x0) r1 = ioctl$KVM_CREATE_VM(r0, 0xae01, 0x0) r2 = ioctl$KVM_CREATE_VCPU(r1, 0xae41, 0x0) ioctl$KVM_SET_USER_MEMORY_REGION(r1, 0x4020ae46, &(0x7f0000000400)={0x0, 0x3, 0x0, 0x2000, &(0x7f0000000000/0x2000)=nil}) syz_kvm_setup_cpu$x86(r1, 0xffffffffffffffff, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x0, 0x0, 0xfffffffffffffe78) sendmmsg$unix(0xffffffffffffffff, &(0x7f0000002780)=[{0x0, 0x0, &(0x7f0000001d00)=[{&(0x7f0000000bc0)="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", 0x3c5}], 0x1}], 0x1, 0x0) ioctl$KVM_REGISTER_COALESCED_MMIO(r1, 0x4010ae67, &(0x7f00000000c0)={0x0, 0x15200}) syz_kvm_setup_cpu$x86(0xffffffffffffffff, r2, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x8, 0x0, 0x0) ioctl$KVM_RUN(r2, 0xae80, 0x1700) [ 1103.717622] gfs2: fsid=_: Now mounting FS... [ 1103.732453] CPU: 0 PID: 20950 Comm: syz-executor3 Not tainted 4.20.0-next-20190103 #4 [ 1103.740435] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 1103.749778] Call Trace: [ 1103.752368] dump_stack+0x1db/0x2d0 [ 1103.756033] ? dump_stack_print_info.cold+0x20/0x20 [ 1103.761108] ? _raw_spin_unlock_irqrestore+0xa4/0xe0 [ 1103.766237] sysfs_warn_dup.cold+0x1c/0x31 [ 1103.770490] sysfs_create_dir_ns+0x2ce/0x330 [ 1103.774927] ? sysfs_create_mount_point+0xa0/0xa0 [ 1103.779807] ? do_raw_spin_trylock+0x270/0x270 [ 1103.784440] kobject_add_internal.cold+0x129/0x6d8 [ 1103.789375] ? kobj_ns_type_registered+0x60/0x60 [ 1103.794126] ? kfree_const+0x59/0x70 [ 1103.797849] ? rcu_read_lock_sched_held+0x110/0x130 [ 1103.802860] ? kfree+0x1fa/0x230 [ 1103.806227] ? kfree_const+0x5e/0x70 [ 1103.809938] kobject_init_and_add+0x101/0x160 [ 1103.814425] ? kobject_add_internal+0x4b0/0x4b0 [ 1103.819087] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 1103.824616] ? vsnprintf+0x368/0x1b10 [ 1103.828471] gfs2_sys_fs_add+0x210/0x500 [ 1103.832527] ? recover_store+0x1a0/0x1a0 [ 1103.836585] ? snprintf+0xbb/0xf0 [ 1103.840032] ? vsprintf+0x30/0x40 [ 1103.843488] ? set_blocksize+0x2bf/0x340 [ 1103.847571] ? memcpy+0x46/0x50 [ 1103.850849] fill_super+0x894/0x1990 [ 1103.854570] ? gfs2_online_uevent+0x2d0/0x2d0 [ 1103.859069] ? snprintf+0xbb/0xf0 [ 1103.862541] ? vsprintf+0x40/0x40 [ 1103.866007] ? ns_capable_common+0x141/0x170 [ 1103.870405] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 1103.875447] ? set_blocksize+0x2bf/0x340 [ 1103.879515] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 1103.885068] gfs2_mount+0x5db/0x6ee [ 1103.888694] ? fill_super+0x1990/0x1990 [ 1103.892693] ? vfs_parse_fs_string+0x1c5/0x2b0 [ 1103.897270] ? vfs_parse_fs_param+0x4b0/0x4b0 [ 1103.901764] ? fill_super+0x1990/0x1990 [ 1103.905750] legacy_get_tree+0xf2/0x200 [ 1103.909727] vfs_get_tree+0x123/0x450 [ 1103.913523] do_mount+0x1622/0x2fa0 [ 1103.917152] ? copy_mount_string+0x40/0x40 [ 1103.921397] ? kmem_cache_alloc_trace+0x354/0x760 [ 1103.926239] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 1103.931768] ? _copy_from_user+0xdd/0x150 [ 1103.935923] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 1103.941454] ? copy_mount_options+0x30e/0x440 [ 1103.945946] ksys_mount+0xdb/0x150 [ 1103.949606] __x64_sys_mount+0xbe/0x150 [ 1103.953594] do_syscall_64+0x1a3/0x800 [ 1103.957501] ? syscall_return_slowpath+0x5f0/0x5f0 [ 1103.962439] ? prepare_exit_to_usermode+0x232/0x3b0 [ 1103.967456] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 1103.972303] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 1103.977492] RIP: 0033:0x45a93a [ 1103.980676] Code: b8 a6 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 ed 8c fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 0f 83 ca 8c fb ff c3 66 0f 1f 84 00 00 00 00 00 [ 1103.999564] RSP: 002b:00007fdbfe5d2a88 EFLAGS: 00000206 ORIG_RAX: 00000000000000a5 [ 1104.007261] RAX: ffffffffffffffda RBX: 00007fdbfe5d2b30 RCX: 000000000045a93a [ 1104.014518] RDX: 00007fdbfe5d2ad0 RSI: 0000000020000200 RDI: 00007fdbfe5d2af0 [ 1104.021773] RBP: 0000000020000200 R08: 00007fdbfe5d2b30 R09: 00007fdbfe5d2ad0 [ 1104.029039] R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000003 [ 1104.036322] R13: 0000000000000000 R14: 00000000004db380 R15: 00000000ffffffff 03:47:23 executing program 2: syz_mount_image$gfs2(&(0x7f0000000140)='gfs2\x00', &(0x7f0000000200)='./file0\x00', 0x0, 0x0, 0x0, 0x0, 0x0) socketpair$unix(0x1, 0x5, 0x0, &(0x7f0000000000)) socketpair$unix(0x1, 0x0, 0x0, 0x0) [ 1104.082976] gfs2: not a GFS2 filesystem [ 1104.086961] gfs2: fsid=_: can't read superblock [ 1104.120624] gfs2: fsid=_: can't read superblock: -22 [ 1104.251151] gfs2: not a GFS2 filesystem 03:47:24 executing program 1: r0 = openat$kvm(0xffffffffffffff9c, &(0x7f0000000140)='/dev/kvm\x00', 0x0, 0x0) r1 = ioctl$KVM_CREATE_VM(r0, 0xae01, 0x0) r2 = ioctl$KVM_CREATE_VCPU(r1, 0xae41, 0x0) ioctl$KVM_SET_USER_MEMORY_REGION(r1, 0x4020ae46, &(0x7f0000000400)={0x0, 0x3, 0x0, 0x2000, &(0x7f0000000000/0x2000)=nil}) syz_kvm_setup_cpu$x86(r1, 0xffffffffffffffff, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x0, 0x0, 0xfffffffffffffe78) sendmmsg$unix(0xffffffffffffffff, &(0x7f0000002780)=[{0x0, 0x0, &(0x7f0000001d00)=[{&(0x7f0000000bc0)="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", 0x3c5}], 0x1}], 0x1, 0x0) ioctl$KVM_REGISTER_COALESCED_MMIO(r1, 0x4010ae67, &(0x7f00000000c0)={0x0, 0x15200}) syz_kvm_setup_cpu$x86(0xffffffffffffffff, r2, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x8, 0x0, 0x0) ioctl$KVM_RUN(r2, 0xae80, 0xe000000) 03:47:24 executing program 4: syz_mount_image$gfs2(&(0x7f0000000140)='gfs2\x00', &(0x7f0000000200)='./file0\x00', 0x6c, 0x0, 0x0, 0x0, &(0x7f00000003c0)={[{@locktable={'locktable', 0x3d, '/'}}, {@lockproto_nolock='lockproto=lock_nolock'}]}) socketpair$unix(0x1, 0x1, 0x0, &(0x7f0000000180)) 03:47:24 executing program 0: socketpair$unix(0x1, 0x1, 0x0, &(0x7f0000000440)={0xffffffffffffffff, 0xffffffffffffffff}) ioctl$PERF_EVENT_IOC_ENABLE(r0, 0x8912, 0x400200) r1 = openat$kvm(0xffffffffffffff9c, &(0x7f00000000c0)='/dev/kvm\x00', 0x0, 0x0) openat$dlm_monitor(0xffffffffffffff9c, &(0x7f0000000340)='/dev/dlm-monitor\x00', 0x0, 0x0) r2 = ioctl$KVM_CREATE_VM(r1, 0xae01, 0x0) r3 = ioctl$KVM_CREATE_VCPU(r2, 0xae41, 0x0) syz_kvm_setup_cpu$x86(r2, 0xffffffffffffffff, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x0, 0x0, 0x0) syz_kvm_setup_cpu$x86(0xffffffffffffffff, r3, &(0x7f0000000000/0x18000)=nil, &(0x7f00000001c0)=[@text64={0x40, &(0x7f0000000040)="b9800000c00f3235001000000f30f24c0f2c49e8426dc4027d3493b80800003626660f7e676d660f1678b06cc403f9dfbeb70000000bc7442400f5000000c744240284d178bcff1c24f2f347dbe1", 0x4e}], 0x1, 0x48, 0x0, 0x0) pipe2(&(0x7f0000000000), 0x0) ioctl$KVM_RUN(r3, 0xae80, 0x3f00000000000000) [ 1104.300869] kobject_add_internal failed for _ with -EEXIST, don't try to register things with the same name in the same directory. [ 1104.339041] gfs2: fsid=_: error -17 adding sysfs files [ 1104.481836] gfs2: fsid=_: Trying to join cluster "lock_nolock", "_" 03:47:24 executing program 2: syz_mount_image$gfs2(&(0x7f0000000140)='gfs2\x00', &(0x7f0000000000)='./file0/file0\x00', 0x0, 0x0, 0x0, 0x0, 0x0) socketpair$unix(0x1, 0x0, 0x0, 0x0) [ 1104.522753] gfs2: fsid=_: Now mounting FS... [ 1104.528775] gfs2: not a GFS2 filesystem [ 1104.544860] gfs2: fsid=_: can't read superblock [ 1104.567911] gfs2: fsid=_: can't read superblock: -22 [ 1104.573320] sysfs: cannot create duplicate filename '/fs/gfs2/_' [ 1104.616343] CPU: 1 PID: 20991 Comm: syz-executor4 Not tainted 4.20.0-next-20190103 #4 [ 1104.624328] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 1104.633689] Call Trace: [ 1104.636325] dump_stack+0x1db/0x2d0 [ 1104.639980] ? dump_stack_print_info.cold+0x20/0x20 [ 1104.645000] ? _raw_spin_unlock_irqrestore+0xa4/0xe0 [ 1104.650110] sysfs_warn_dup.cold+0x1c/0x31 [ 1104.654384] sysfs_create_dir_ns+0x2ce/0x330 [ 1104.658815] ? sysfs_create_mount_point+0xa0/0xa0 [ 1104.663653] ? do_raw_spin_trylock+0x270/0x270 [ 1104.668247] kobject_add_internal.cold+0x129/0x6d8 [ 1104.673196] ? kobj_ns_type_registered+0x60/0x60 [ 1104.677950] ? kfree_const+0x59/0x70 [ 1104.681686] ? rcu_read_lock_sched_held+0x110/0x130 [ 1104.686700] ? kfree+0x1fa/0x230 [ 1104.690077] ? kfree_const+0x5e/0x70 [ 1104.693799] kobject_init_and_add+0x101/0x160 [ 1104.698331] ? kobject_add_internal+0x4b0/0x4b0 [ 1104.703021] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 1104.708590] ? vsnprintf+0x368/0x1b10 [ 1104.712449] gfs2_sys_fs_add+0x210/0x500 [ 1104.716509] ? recover_store+0x1a0/0x1a0 [ 1104.720572] ? snprintf+0xbb/0xf0 [ 1104.724022] ? vsprintf+0x30/0x40 [ 1104.727494] ? set_blocksize+0x2bf/0x340 [ 1104.731569] ? memcpy+0x46/0x50 [ 1104.731591] fill_super+0x894/0x1990 [ 1104.731617] ? gfs2_online_uevent+0x2d0/0x2d0 [ 1104.731639] ? snprintf+0xbb/0xf0 [ 1104.746568] ? vsprintf+0x40/0x40 [ 1104.750029] ? ns_capable_common+0x141/0x170 [ 1104.754446] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 1104.754459] ? set_blocksize+0x2bf/0x340 [ 1104.754477] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 1104.754494] gfs2_mount+0x5db/0x6ee [ 1104.754511] ? fill_super+0x1990/0x1990 [ 1104.754564] ? vfs_parse_fs_string+0x1c5/0x2b0 [ 1104.754580] ? vfs_parse_fs_param+0x4b0/0x4b0 [ 1104.754595] ? fill_super+0x1990/0x1990 [ 1104.754611] legacy_get_tree+0xf2/0x200 [ 1104.772826] vfs_get_tree+0x123/0x450 [ 1104.772857] do_mount+0x1622/0x2fa0 [ 1104.772879] ? copy_mount_string+0x40/0x40 [ 1104.772894] ? kmem_cache_alloc_trace+0x354/0x760 [ 1104.781424] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 1104.793821] ? copy_mount_options+0x30e/0x440 [ 1104.793842] ksys_mount+0xdb/0x150 [ 1104.793860] __x64_sys_mount+0xbe/0x150 [ 1104.793879] do_syscall_64+0x1a3/0x800 [ 1104.793896] ? syscall_return_slowpath+0x5f0/0x5f0 [ 1104.793911] ? prepare_exit_to_usermode+0x232/0x3b0 [ 1104.793929] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 1104.793950] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 1104.793962] RIP: 0033:0x45a93a 03:47:24 executing program 1: r0 = openat$kvm(0xffffffffffffff9c, &(0x7f0000000140)='/dev/kvm\x00', 0x0, 0x0) r1 = ioctl$KVM_CREATE_VM(r0, 0xae01, 0x0) r2 = ioctl$KVM_CREATE_VCPU(r1, 0xae41, 0x0) ioctl$KVM_SET_USER_MEMORY_REGION(r1, 0x4020ae46, &(0x7f0000000400)={0x0, 0x3, 0x0, 0x2000, &(0x7f0000000000/0x2000)=nil}) syz_kvm_setup_cpu$x86(r1, 0xffffffffffffffff, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x0, 0x0, 0xfffffffffffffe78) sendmmsg$unix(0xffffffffffffffff, &(0x7f0000002780)=[{0x0, 0x0, &(0x7f0000001d00)=[{&(0x7f0000000bc0)="b474ac0450ac6a2ff5ba4c1a19990e818d6fb646a5739e09c636550fdd39d0316e215a5a9427ac426da0b375844fb7f5ee5130d0b57cdab9af6f5f0d39c1787ec9ecde6263664c6a9859b7a0c4cbc99a05184da950f370cf65a18bff7975c0c12ca4227baa2164d031a5472d7f581c6f7eedd103d8fc89b6b4b52e5d3da0817eec8c57f722e356068b99a056ab6a693b9eebe38d75170491e07f9f69573b02b1a048f29e39cd24fed99e8606ffcbe4f617f48370ec62bd327cdfb9da8e8fef232b2e8f8f6868bb1781eab4c294befd65d9a336123bd34be8f256b5fc0420aa6e930f292a9a06365daaebd0bcaaaf5e0c12167aad0c62a48666383ee58b37df8077c5d2d5298d5247e240a78ff2543147129775f6d4a872df80d9da66c2a0a169df65141cbe88b1e280d60f6e11b25a0b5bb1bdd430378761d547f3ff7e42cc84c849e66004e30905d908e352a53f95bca84a68a6ce5ee82b69c939a196a7060bee28d8dee1ed52ae04b228bedf9302df44cc957780e42c2784d18e3695ee5e73dbe385331494af3cbcf8952e85469e9566c32692c0ceae8dab7b9553b5e8aa66edbad2ed828ba2a665a48a2822d9dc538863aea705c926c5a12fee84db545a36a13281e09e82c06211cc195cb4409bedfb7cf22f6c01fba9720bc4f447da73bb95bab6c056ce51bbc9d5b6622c54152e853f9639d2db2a5992e0f0e8f77a2e5efcfd139869cbdc902622399035d6ab8c22e33605be6850356be97ac05588720e1e215fbf5cb6633f0894e0a4dbd28708cac77792a31b00f47d18cebcb9114f1b0ffd66b587c5f9ba086fc530c6a0ac561068de208f18a3b6adc47f04bd63bd4a31544eb953398ddee5b5e4533aa529947aa46e7e517ff719e559c106f8afc570019f272a9f2d2699c7384612854de44dc40bb33aafee4e5fab1c06ceeffec56782452589f80c3946e6631c591e7f82af7e3a6422e0f35b0847f0a3049ee29b09f8aadf59c96a99576be85d6ddcf8c4d82373355add27397517402a56fd36bf877a53731413c30786431262705fb01511a778482cd85b60323b683e0e9d2f06b57678ddcf06f6da03f818e7f0b4db7045527f6e00fa26fe586fe0fcc72024fad6bab1739f6d7980d21f1fac0e7f53ee4cb254349b93a89f5695be91e5c586411b18f3f11298d979abdf4dd4796b181e623189aa73182c4c5ff346545168a520241ce23e08ade26085f654537258efaacfe1a64b2261c5180eb7c01ca6f4dc0f08f98ec12c06036278eff4c8d3b852bb2022be745861268ffbe0bb37c45452d2ac97aa6cb81db9f428688e6eab0e85ba6eb2eaecf4e8e137a2101f04b201258a71d857194610", 0x3c5}], 0x1}], 0x1, 0x0) ioctl$KVM_REGISTER_COALESCED_MMIO(r1, 0x4010ae67, &(0x7f00000000c0)={0x0, 0x15200}) syz_kvm_setup_cpu$x86(0xffffffffffffffff, r2, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x8, 0x0, 0x0) ioctl$KVM_RUN(r2, 0xae80, 0x1c000000) [ 1104.801358] Code: b8 a6 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 ed 8c fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 0f 83 ca 8c fb ff c3 66 0f 1f 84 00 00 00 00 00 [ 1104.801366] RSP: 002b:00007ff699fe9a88 EFLAGS: 00000206 ORIG_RAX: 00000000000000a5 [ 1104.801392] RAX: ffffffffffffffda RBX: 00007ff699fe9b30 RCX: 000000000045a93a [ 1104.801401] RDX: 00007ff699fe9ad0 RSI: 0000000020000200 RDI: 00007ff699fe9af0 [ 1104.801420] RBP: 0000000020000200 R08: 00007ff699fe9b30 R09: 00007ff699fe9ad0 [ 1104.801428] R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000003 [ 1104.801436] R13: 0000000000000000 R14: 00000000004db380 R15: 00000000ffffffff [ 1104.808112] kobject_add_internal failed for _ with -EEXIST, don't try to register things with the same name in the same directory. [ 1104.882816] gfs2: fsid=_: error -17 adding sysfs files 03:47:24 executing program 5: r0 = socket$inet(0x2, 0x4000000000000001, 0x0) setsockopt$inet_tcp_int(r0, 0x6, 0x80000000000002, &(0x7f0000000040)=0x74, 0x4) bind$inet(r0, &(0x7f0000000180)={0x2, 0x4e23, @multicast1}, 0x10) sendto$inet(r0, 0x0, 0x0, 0x200007fd, &(0x7f0000e68000)={0x2, 0x4e23, @local}, 0x10) write$binfmt_elf64(r0, &(0x7f00000012c0)=ANY=[@ANYBLOB="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"], 0x201) mmap(&(0x7f0000000000/0xb36000)=nil, 0xb36000, 0x3, 0x8031, 0xffffffffffffffff, 0x0) sendmmsg$inet_sctp(r0, &(0x7f0000002600)=[{0x0, 0x0, &(0x7f0000000240)=[{&(0x7f0000000380)="d4", 0x1}], 0x1, 0x0, 0x0, 0xf00}], 0x1, 0x0) 03:47:24 executing program 0: socketpair$unix(0x1, 0x1, 0x0, &(0x7f0000000440)={0xffffffffffffffff, 0xffffffffffffffff}) ioctl$PERF_EVENT_IOC_ENABLE(r0, 0x8912, 0x400200) r1 = openat$kvm(0xffffffffffffff9c, &(0x7f00000000c0)='/dev/kvm\x00', 0x0, 0x0) openat$dlm_monitor(0xffffffffffffff9c, &(0x7f0000000340)='/dev/dlm-monitor\x00', 0x0, 0x0) r2 = ioctl$KVM_CREATE_VM(r1, 0xae01, 0x0) r3 = ioctl$KVM_CREATE_VCPU(r2, 0xae41, 0x0) syz_kvm_setup_cpu$x86(r2, 0xffffffffffffffff, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x0, 0x0, 0x0) syz_kvm_setup_cpu$x86(0xffffffffffffffff, r3, &(0x7f0000000000/0x18000)=nil, &(0x7f00000001c0)=[@text64={0x40, &(0x7f0000000040)="b9800000c00f3235001000000f30f24c0f2c49e8426dc4027d3493b80800003626660f7e676d660f1678b06cc403f9dfbeb70000000bc7442400f5000000c744240284d178bcff1c24f2f347dbe1", 0x4e}], 0x1, 0x48, 0x0, 0x0) pipe2(&(0x7f0000000000), 0x0) ioctl$KVM_RUN(r3, 0xae80, 0x6018230000000000) 03:47:24 executing program 3: syz_mount_image$gfs2(&(0x7f0000000140)='gfs2\x1d', &(0x7f0000000200)='./file0\x00', 0x0, 0x0, 0x0, 0x0, &(0x7f00000003c0)={[{@locktable={'locktable', 0x3d, '/'}}, {@lockproto_nolock='lockproto=lock_nolock'}]}) [ 1105.194007] gfs2: fsid=_: Trying to join cluster "lock_nolock", "_" [ 1105.260503] gfs2: fsid=_: Now mounting FS... 03:47:24 executing program 2: syz_mount_image$gfs2(&(0x7f0000000040)='gfs2\x00', &(0x7f0000000200)='./file0\x00', 0x0, 0x0, 0x0, 0x1000, 0x0) r0 = openat$ppp(0xffffffffffffff9c, &(0x7f0000000000)='/dev/ppp\x00', 0x240180, 0x0) setsockopt$inet_sctp6_SCTP_SOCKOPT_CONNECTX(r0, 0x84, 0x6e, &(0x7f0000000180)=[@in={0x2, 0x4e24, @local}, @in6={0xa, 0x4e22, 0x2, @empty, 0xda2}, @in6={0xa, 0x4e23, 0x7, @mcast2, 0x4}], 0x48) socketpair$unix(0x1, 0x2, 0x0, 0x0) ioctl$VIDIOC_SUBDEV_S_SELECTION(r0, 0xc040563e, &(0x7f0000000080)={0x1, 0x0, 0x0, 0x3, {0x8, 0x401, 0x2, 0x271e}}) r1 = syz_genetlink_get_family_id$ipvs(&(0x7f0000000340)='IPVS\x00') sendmsg$IPVS_CMD_ZERO(r0, &(0x7f00000004c0)={&(0x7f0000000140)={0x10, 0x0, 0x0, 0x8000000}, 0xc, &(0x7f0000000480)={&(0x7f0000000380)={0xe8, r1, 0x400, 0x70bd27, 0x25dfdbfe, {}, [@IPVS_CMD_ATTR_TIMEOUT_TCP_FIN={0x8, 0x5, 0x2}, @IPVS_CMD_ATTR_DAEMON={0xc, 0x3, [@IPVS_DAEMON_ATTR_SYNC_ID={0x8, 0x3, 0x3}]}, @IPVS_CMD_ATTR_DEST={0x1c, 0x2, [@IPVS_DEST_ATTR_INACT_CONNS={0x8, 0x8, 0x8}, @IPVS_DEST_ATTR_INACT_CONNS={0x8}, @IPVS_DEST_ATTR_L_THRESH={0x8, 0x6, 0x1}]}, @IPVS_CMD_ATTR_DAEMON={0x14, 0x3, [@IPVS_DAEMON_ATTR_STATE={0x8, 0x1, 0x1}, @IPVS_DAEMON_ATTR_MCAST_TTL={0x8, 0x8, 0x8}]}, @IPVS_CMD_ATTR_TIMEOUT_UDP={0x8, 0x6, 0x9}, @IPVS_CMD_ATTR_DEST={0x54, 0x2, [@IPVS_DEST_ATTR_PERSIST_CONNS={0x8, 0x9, 0x9}, @IPVS_DEST_ATTR_FWD_METHOD={0x8}, @IPVS_DEST_ATTR_ACTIVE_CONNS={0x8, 0x7, 0x2}, @IPVS_DEST_ATTR_WEIGHT={0x8, 0x4, 0x40}, @IPVS_DEST_ATTR_ADDR={0x14, 0x1, @ipv4=@initdev={0xac, 0x1e, 0x0, 0x0}}, @IPVS_DEST_ATTR_ADDR={0x14, 0x1, @ipv4=@multicast1}, @IPVS_DEST_ATTR_U_THRESH={0x8, 0x5, 0xd9d}]}, @IPVS_CMD_ATTR_TIMEOUT_TCP_FIN={0x8, 0x5, 0xffff}, @IPVS_CMD_ATTR_DEST={0x24, 0x2, [@IPVS_DEST_ATTR_INACT_CONNS={0x8, 0x8, 0x6}, @IPVS_DEST_ATTR_WEIGHT={0x8, 0x4, 0x9}, @IPVS_DEST_ATTR_FWD_METHOD={0x8, 0x3, 0x7}, @IPVS_DEST_ATTR_L_THRESH={0x8, 0x6, 0x100000000}]}, @IPVS_CMD_ATTR_TIMEOUT_TCP={0x8, 0x4, 0x7ff}]}, 0xe8}, 0x1, 0x0, 0x0, 0x4000000}, 0x4008000) getsockopt$inet6_opts(r0, 0x29, 0x37, &(0x7f0000000240)=""/249, &(0x7f00000000c0)=0xf9) r2 = syz_open_dev$usb(&(0x7f0000002740)='/dev/bus/usb/00#/00#\x00', 0x9, 0x800) ioctl$TIOCGSID(r0, 0x5429, &(0x7f0000000100)) getsockopt$IP_VS_SO_GET_VERSION(r2, 0x0, 0x480, &(0x7f0000002780), &(0x7f00000027c0)=0x40) 03:47:25 executing program 1: r0 = openat$kvm(0xffffffffffffff9c, &(0x7f0000000140)='/dev/kvm\x00', 0x0, 0x0) r1 = ioctl$KVM_CREATE_VM(r0, 0xae01, 0x0) r2 = ioctl$KVM_CREATE_VCPU(r1, 0xae41, 0x0) ioctl$KVM_SET_USER_MEMORY_REGION(r1, 0x4020ae46, &(0x7f0000000400)={0x0, 0x3, 0x0, 0x2000, &(0x7f0000000000/0x2000)=nil}) syz_kvm_setup_cpu$x86(r1, 0xffffffffffffffff, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x0, 0x0, 0xfffffffffffffe78) sendmmsg$unix(0xffffffffffffffff, &(0x7f0000002780)=[{0x0, 0x0, &(0x7f0000001d00)=[{&(0x7f0000000bc0)="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", 0x3c5}], 0x1}], 0x1, 0x0) ioctl$KVM_REGISTER_COALESCED_MMIO(r1, 0x4010ae67, &(0x7f00000000c0)={0x0, 0x15200}) syz_kvm_setup_cpu$x86(0xffffffffffffffff, r2, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x8, 0x0, 0x0) ioctl$KVM_RUN(r2, 0xae80, 0xd00) [ 1105.286457] gfs2: not a GFS2 filesystem [ 1105.291102] gfs2: fsid=_: can't read superblock [ 1105.322819] gfs2: fsid=_: can't read superblock: -22 03:47:25 executing program 3: syz_mount_image$gfs2(&(0x7f0000000140)='gfs28', &(0x7f0000000200)='./file0\x00', 0x0, 0x0, 0x0, 0x0, &(0x7f00000003c0)={[{@locktable={'locktable', 0x3d, '/'}}, {@lockproto_nolock='lockproto=lock_nolock'}]}) 03:47:25 executing program 0: socketpair$unix(0x1, 0x1, 0x0, &(0x7f0000000440)={0xffffffffffffffff, 0xffffffffffffffff}) ioctl$PERF_EVENT_IOC_ENABLE(r0, 0x8912, 0x400200) r1 = openat$kvm(0xffffffffffffff9c, &(0x7f00000000c0)='/dev/kvm\x00', 0x0, 0x0) openat$dlm_monitor(0xffffffffffffff9c, &(0x7f0000000340)='/dev/dlm-monitor\x00', 0x0, 0x0) r2 = ioctl$KVM_CREATE_VM(r1, 0xae01, 0x0) r3 = ioctl$KVM_CREATE_VCPU(r2, 0xae41, 0x0) syz_kvm_setup_cpu$x86(r2, 0xffffffffffffffff, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x0, 0x0, 0x0) syz_kvm_setup_cpu$x86(0xffffffffffffffff, r3, &(0x7f0000000000/0x18000)=nil, &(0x7f00000001c0)=[@text64={0x40, &(0x7f0000000040)="b9800000c00f3235001000000f30f24c0f2c49e8426dc4027d3493b80800003626660f7e676d660f1678b06cc403f9dfbeb70000000bc7442400f5000000c744240284d178bcff1c24f2f347dbe1", 0x4e}], 0x1, 0x48, 0x0, 0x0) pipe2(&(0x7f0000000000), 0x0) ioctl$KVM_RUN(r3, 0xae80, 0x1100) 03:47:25 executing program 4: syz_mount_image$gfs2(&(0x7f0000000140)='gfs2\x00', &(0x7f0000000200)='./file0\x00', 0x125d5, 0x0, 0x0, 0x0, &(0x7f00000003c0)={[{@locktable={'locktable', 0x3d, '/'}}, {@lockproto_nolock='lockproto=lock_nolock'}]}) socketpair$unix(0x1, 0x1, 0x0, &(0x7f0000000180)) 03:47:25 executing program 2: syz_mount_image$gfs2(&(0x7f0000000140)='gfs2\x00', &(0x7f0000000200)='./file0\x00', 0x1, 0x0, 0x0, 0x0, 0x0) socketpair$unix(0x1, 0x0, 0x0, 0x0) r0 = accept4$bt_l2cap(0xffffffffffffffff, 0x0, &(0x7f0000000000), 0x80000) fsetxattr$trusted_overlay_origin(r0, &(0x7f0000000040)='trusted.overlay.origin\x00', &(0x7f0000000080)='y\x00', 0x2, 0x1) 03:47:25 executing program 1: r0 = openat$kvm(0xffffffffffffff9c, &(0x7f0000000140)='/dev/kvm\x00', 0x0, 0x0) r1 = ioctl$KVM_CREATE_VM(r0, 0xae01, 0x0) r2 = ioctl$KVM_CREATE_VCPU(r1, 0xae41, 0x0) ioctl$KVM_SET_USER_MEMORY_REGION(r1, 0x4020ae46, &(0x7f0000000400)={0x0, 0x3, 0x0, 0x2000, &(0x7f0000000000/0x2000)=nil}) syz_kvm_setup_cpu$x86(r1, 0xffffffffffffffff, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x0, 0x0, 0xfffffffffffffe78) sendmmsg$unix(0xffffffffffffffff, &(0x7f0000002780)=[{0x0, 0x0, &(0x7f0000001d00)=[{&(0x7f0000000bc0)="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", 0x3c5}], 0x1}], 0x1, 0x0) ioctl$KVM_REGISTER_COALESCED_MMIO(r1, 0x4010ae67, &(0x7f00000000c0)={0x0, 0x15200}) syz_kvm_setup_cpu$x86(0xffffffffffffffff, r2, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x8, 0x0, 0x0) ioctl$KVM_RUN(r2, 0xae80, 0xf00000000000000) 03:47:25 executing program 0: socketpair$unix(0x1, 0x1, 0x0, &(0x7f0000000440)={0xffffffffffffffff, 0xffffffffffffffff}) ioctl$PERF_EVENT_IOC_ENABLE(r0, 0x8912, 0x400200) r1 = openat$kvm(0xffffffffffffff9c, &(0x7f00000000c0)='/dev/kvm\x00', 0x0, 0x0) openat$dlm_monitor(0xffffffffffffff9c, &(0x7f0000000340)='/dev/dlm-monitor\x00', 0x0, 0x0) r2 = ioctl$KVM_CREATE_VM(r1, 0xae01, 0x0) r3 = ioctl$KVM_CREATE_VCPU(r2, 0xae41, 0x0) syz_kvm_setup_cpu$x86(r2, 0xffffffffffffffff, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x0, 0x0, 0x0) syz_kvm_setup_cpu$x86(0xffffffffffffffff, r3, &(0x7f0000000000/0x18000)=nil, &(0x7f00000001c0)=[@text64={0x40, &(0x7f0000000040)="b9800000c00f3235001000000f30f24c0f2c49e8426dc4027d3493b80800003626660f7e676d660f1678b06cc403f9dfbeb70000000bc7442400f5000000c744240284d178bcff1c24f2f347dbe1", 0x4e}], 0x1, 0x48, 0x0, 0x0) pipe2(&(0x7f0000000000), 0x0) ioctl$KVM_RUN(r3, 0xae80, 0x5) [ 1105.765976] gfs2: fsid=_: Trying to join cluster "lock_nolock", "_" [ 1105.785102] gfs2: fsid=_: Now mounting FS... [ 1105.790334] gfs2: not a GFS2 filesystem [ 1105.794911] gfs2: fsid=_: can't read superblock [ 1105.849474] gfs2: fsid=_: can't read superblock: -22 03:47:25 executing program 5: r0 = socket$inet(0x2, 0x4000000000000001, 0x0) setsockopt$inet_tcp_int(r0, 0x6, 0x80000000000002, &(0x7f0000000040)=0x74, 0x4) bind$inet(r0, &(0x7f0000000180)={0x2, 0x4e23, @multicast1}, 0x10) sendto$inet(r0, 0x0, 0x0, 0x200007fd, &(0x7f0000e68000)={0x2, 0x4e23, @local}, 0x10) write$binfmt_elf64(r0, &(0x7f00000012c0)=ANY=[@ANYBLOB="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"], 0x205) mmap(&(0x7f0000000000/0xb36000)=nil, 0xb36000, 0x3, 0x8031, 0xffffffffffffffff, 0x0) sendmmsg$inet_sctp(r0, &(0x7f0000002600)=[{0x0, 0x0, &(0x7f0000000240)=[{&(0x7f0000000380)="d4", 0x1}], 0x1, 0x0, 0x0, 0xf00}], 0x1, 0x0) 03:47:25 executing program 3: syz_mount_image$gfs2(&(0x7f0000000140)='gfs2\x00', &(0x7f0000000200)='./file0\x00', 0x0, 0x0, 0x0, 0x0, &(0x7f00000003c0)={[{@locktable={'locktable', 0x3d, '/'}}, {@lockproto_nolock='lockproto=lock_nolock'}]}) [ 1105.993394] gfs2: not a GFS2 filesystem 03:47:25 executing program 1: r0 = openat$kvm(0xffffffffffffff9c, &(0x7f0000000140)='/dev/kvm\x00', 0x0, 0x0) r1 = ioctl$KVM_CREATE_VM(r0, 0xae01, 0x0) r2 = ioctl$KVM_CREATE_VCPU(r1, 0xae41, 0x0) ioctl$KVM_SET_USER_MEMORY_REGION(r1, 0x4020ae46, &(0x7f0000000400)={0x0, 0x3, 0x0, 0x2000, &(0x7f0000000000/0x2000)=nil}) syz_kvm_setup_cpu$x86(r1, 0xffffffffffffffff, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x0, 0x0, 0xfffffffffffffe78) sendmmsg$unix(0xffffffffffffffff, &(0x7f0000002780)=[{0x0, 0x0, &(0x7f0000001d00)=[{&(0x7f0000000bc0)="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", 0x3c5}], 0x1}], 0x1, 0x0) ioctl$KVM_REGISTER_COALESCED_MMIO(r1, 0x4010ae67, &(0x7f00000000c0)={0x0, 0x15200}) syz_kvm_setup_cpu$x86(0xffffffffffffffff, r2, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x8, 0x0, 0x0) ioctl$KVM_RUN(r2, 0xae80, 0x100008000000000) [ 1106.158693] gfs2: fsid=_: Trying to join cluster "lock_nolock", "_" [ 1106.183735] gfs2: not a GFS2 filesystem 03:47:25 executing program 4: syz_mount_image$gfs2(&(0x7f0000000140)='gfs2\x00', &(0x7f0000000200)='./file0\x00', 0xe125010000000000, 0x0, 0x0, 0x0, &(0x7f00000003c0)={[{@locktable={'locktable', 0x3d, '/'}}, {@lockproto_nolock='lockproto=lock_nolock'}]}) socketpair$unix(0x1, 0x1, 0x0, &(0x7f0000000180)) [ 1106.227122] gfs2: fsid=_: Now mounting FS... [ 1106.257649] gfs2: not a GFS2 filesystem 03:47:26 executing program 2: syz_mount_image$gfs2(&(0x7f0000000140)='gfs2\x00', &(0x7f0000000200)='./file0\x00', 0x0, 0x0, 0x0, 0x0, 0x0) socketpair$unix(0x1, 0x2, 0x0, 0x0) syz_mount_image$f2fs(&(0x7f0000000000)='f2fs\x00', &(0x7f0000000040)='./file0\x00', 0x2fab5cab, 0x5, &(0x7f0000000180)=[{&(0x7f0000000080)="c82812912129692267d05afddd60a438a91663c7ad0aca6b631cf8965f8250c7b8131f2d6ef547973d57a8f31103df0e530bbbe05442cfdd3153d38e1e80cc1e", 0x40, 0x5}, {&(0x7f0000000240)="0ec271eab07fde5c52da03b91895b4b0b45a7cde97d4aeecd2038e11d6bda70f48f922589765b376ba330ef5332eef8202e697c9d22ab1d8f82258db2942130e8208eb5fb2aaacefa0f3d3997b53448a19a40a2ff13b91e4cbc88dbadc21a7be3b8c439bafa062858e5dc8defa851a0ec93488ff6fe24c058b667cb9d275671e7a5a6be8671640727c857cf7e348d1b5df00060b74368a77eefb36a3b1ca90c26099fead4f802ba804a1ec9db1afd8a1e51118aafb43fb5cd1145b9f802efb96d57bd8", 0xc3, 0xfff}, {&(0x7f00000000c0)="37f05a041e3a02938c16", 0xa, 0x6}, {&(0x7f0000000340)="0c7d2a87dc47c0e49d794ca3eccb0c3b183d2eab43de75d04f23bc3e56fc308a0958557416dc9f12f2105119d9a00627af0a87d9da52872dac8cdd00d2881f4fa1dd6584a2cf0fb1a935c57247ce2c4c7f209b117d74902d85893675f4be4050ac488e52f90fa5c10fd08a87cc9a55db8c17cb1b109bc6edab65547d9fff4fae0b6dad1d68855294a1bb78daaead038f46dd60ec8448dc64443ac1e5aa659fc66d3df44dea5aa376dfb71c", 0xab, 0x9}, {&(0x7f0000000100)}], 0x2, &(0x7f0000000400)={[{@noquota='noquota'}, {@data_flush='data_flush'}, {@inline_data='inline_data'}, {@grpquota={'grpquota', 0x3d, '+!'}}, {@noinline_data='noinline_data'}, {@four_active_logs='active_logs=4'}, {@inline_data='inline_data'}, {@two_active_logs='active_logs=2'}, {@fastboot='fastboot'}], [{@fscontext={'fscontext', 0x3d, 'unconfined_u'}}, {@smackfstransmute={'smackfstransmute', 0x3d, 'gfs2\x00'}}, {@subj_user={'subj_user', 0x3d, '&!+:selftrusted*cgroupsecurity,]/'}}]}) [ 1106.287287] gfs2: fsid=_: can't read superblock 03:47:26 executing program 0: socketpair$unix(0x1, 0x1, 0x0, &(0x7f0000000440)={0xffffffffffffffff, 0xffffffffffffffff}) ioctl$PERF_EVENT_IOC_ENABLE(r0, 0x8912, 0x400200) r1 = openat$kvm(0xffffffffffffff9c, &(0x7f00000000c0)='/dev/kvm\x00', 0x0, 0x0) openat$dlm_monitor(0xffffffffffffff9c, &(0x7f0000000340)='/dev/dlm-monitor\x00', 0x0, 0x0) r2 = ioctl$KVM_CREATE_VM(r1, 0xae01, 0x0) r3 = ioctl$KVM_CREATE_VCPU(r2, 0xae41, 0x0) syz_kvm_setup_cpu$x86(r2, 0xffffffffffffffff, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x0, 0x0, 0x0) syz_kvm_setup_cpu$x86(0xffffffffffffffff, r3, &(0x7f0000000000/0x18000)=nil, &(0x7f00000001c0)=[@text64={0x40, &(0x7f0000000040)="b9800000c00f3235001000000f30f24c0f2c49e8426dc4027d3493b80800003626660f7e676d660f1678b06cc403f9dfbeb70000000bc7442400f5000000c744240284d178bcff1c24f2f347dbe1", 0x4e}], 0x1, 0x48, 0x0, 0x0) pipe2(&(0x7f0000000000), 0x0) ioctl$KVM_RUN(r3, 0xae80, 0x500) [ 1106.326445] gfs2: fsid=_: can't read superblock: -22 [ 1106.354880] sysfs: cannot create duplicate filename '/fs/gfs2/_' [ 1106.388950] gfs2: not a GFS2 filesystem [ 1106.407721] CPU: 1 PID: 21103 Comm: syz-executor4 Not tainted 4.20.0-next-20190103 #4 [ 1106.415735] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 1106.425088] Call Trace: [ 1106.427679] dump_stack+0x1db/0x2d0 [ 1106.431306] ? dump_stack_print_info.cold+0x20/0x20 [ 1106.436323] ? _raw_spin_unlock_irqrestore+0xa4/0xe0 [ 1106.441428] sysfs_warn_dup.cold+0x1c/0x31 [ 1106.445660] sysfs_create_dir_ns+0x2ce/0x330 [ 1106.450072] ? sysfs_create_mount_point+0xa0/0xa0 [ 1106.454911] ? do_raw_spin_trylock+0x270/0x270 [ 1106.459499] kobject_add_internal.cold+0x129/0x6d8 [ 1106.464426] ? kobj_ns_type_registered+0x60/0x60 [ 1106.469182] ? kfree_const+0x59/0x70 [ 1106.472889] ? rcu_read_lock_sched_held+0x110/0x130 [ 1106.477900] ? kfree+0x1fa/0x230 [ 1106.481289] ? kfree_const+0x5e/0x70 [ 1106.485026] kobject_init_and_add+0x101/0x160 [ 1106.489528] ? kobject_add_internal+0x4b0/0x4b0 [ 1106.494208] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 1106.499737] ? vsnprintf+0x368/0x1b10 [ 1106.503542] gfs2_sys_fs_add+0x210/0x500 [ 1106.507615] ? recover_store+0x1a0/0x1a0 [ 1106.511690] ? snprintf+0xbb/0xf0 [ 1106.515136] ? vsprintf+0x30/0x40 [ 1106.518580] ? set_blocksize+0x2bf/0x340 [ 1106.522645] ? memcpy+0x46/0x50 [ 1106.526495] fill_super+0x894/0x1990 [ 1106.530215] ? gfs2_online_uevent+0x2d0/0x2d0 [ 1106.534722] ? snprintf+0xbb/0xf0 [ 1106.538170] ? vsprintf+0x40/0x40 [ 1106.541645] ? ns_capable_common+0x141/0x170 [ 1106.546078] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 1106.551087] ? set_blocksize+0x2bf/0x340 [ 1106.555180] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 1106.560715] gfs2_mount+0x5db/0x6ee [ 1106.564351] ? fill_super+0x1990/0x1990 [ 1106.568340] ? vfs_parse_fs_string+0x1c5/0x2b0 [ 1106.572919] ? vfs_parse_fs_param+0x4b0/0x4b0 [ 1106.577420] ? fill_super+0x1990/0x1990 [ 1106.581387] legacy_get_tree+0xf2/0x200 [ 1106.585371] vfs_get_tree+0x123/0x450 [ 1106.589165] do_mount+0x1622/0x2fa0 [ 1106.592785] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 1106.597543] ? copy_mount_string+0x40/0x40 [ 1106.601773] ? __sanitizer_cov_trace_const_cmp8+0xc/0x20 [ 1106.607217] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 1106.612770] ? copy_mount_options+0x30e/0x440 [ 1106.617259] ksys_mount+0xdb/0x150 [ 1106.620791] __x64_sys_mount+0xbe/0x150 [ 1106.624766] do_syscall_64+0x1a3/0x800 [ 1106.628657] ? syscall_return_slowpath+0x5f0/0x5f0 [ 1106.633580] ? prepare_exit_to_usermode+0x232/0x3b0 [ 1106.638601] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 1106.643455] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 1106.648634] RIP: 0033:0x45a93a [ 1106.651824] Code: b8 a6 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 ed 8c fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 0f 83 ca 8c fb ff c3 66 0f 1f 84 00 00 00 00 00 [ 1106.670716] RSP: 002b:00007ff699fe9a88 EFLAGS: 00000206 ORIG_RAX: 00000000000000a5 [ 1106.678415] RAX: ffffffffffffffda RBX: 00007ff699fe9b30 RCX: 000000000045a93a [ 1106.685678] RDX: 00007ff699fe9ad0 RSI: 0000000020000200 RDI: 00007ff699fe9af0 [ 1106.692949] RBP: 0000000020000200 R08: 00007ff699fe9b30 R09: 00007ff699fe9ad0 [ 1106.700208] R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000003 [ 1106.707467] R13: 0000000000000000 R14: 00000000004db380 R15: 00000000ffffffff [ 1106.736632] kobject_add_internal failed for _ with -EEXIST, don't try to register things with the same name in the same directory. [ 1106.810746] gfs2: fsid=_: error -17 adding sysfs files 03:47:26 executing program 0: socketpair$unix(0x1, 0x1, 0x0, &(0x7f0000000440)={0xffffffffffffffff, 0xffffffffffffffff}) ioctl$PERF_EVENT_IOC_ENABLE(r0, 0x8912, 0x400200) r1 = openat$kvm(0xffffffffffffff9c, &(0x7f00000000c0)='/dev/kvm\x00', 0x0, 0x0) openat$dlm_monitor(0xffffffffffffff9c, &(0x7f0000000340)='/dev/dlm-monitor\x00', 0x0, 0x0) r2 = ioctl$KVM_CREATE_VM(r1, 0xae01, 0x0) r3 = ioctl$KVM_CREATE_VCPU(r2, 0xae41, 0x0) syz_kvm_setup_cpu$x86(r2, 0xffffffffffffffff, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x0, 0x0, 0x0) syz_kvm_setup_cpu$x86(0xffffffffffffffff, r3, &(0x7f0000000000/0x18000)=nil, &(0x7f00000001c0)=[@text64={0x40, &(0x7f0000000040)="b9800000c00f3235001000000f30f24c0f2c49e8426dc4027d3493b80800003626660f7e676d660f1678b06cc403f9dfbeb70000000bc7442400f5000000c744240284d178bcff1c24f2f347dbe1", 0x4e}], 0x1, 0x48, 0x0, 0x0) pipe2(&(0x7f0000000000), 0x0) ioctl$KVM_RUN(r3, 0xae80, 0x29000000) [ 1106.906794] F2FS-fs (loop2): Magic Mismatch, valid(0xf2f52010) - read(0x0) [ 1106.923172] F2FS-fs (loop2): Can't find valid F2FS filesystem in 1th superblock [ 1106.954915] gfs2: fsid=_: Trying to join cluster "lock_nolock", "_" [ 1106.978981] gfs2: fsid=_: Now mounting FS... [ 1106.992292] F2FS-fs (loop2): Magic Mismatch, valid(0xf2f52010) - read(0x0) 03:47:26 executing program 3: syz_mount_image$gfs2(&(0x7f0000000140)='gfs2\x00', &(0x7f0000000200)='./file0\x00', 0x0, 0x0, 0x0, 0x0, &(0x7f00000003c0)={[{@locktable={'locktable', 0x3d, '/'}}, {@lockproto_nolock='lockproto=lock_nolock'}]}) 03:47:26 executing program 1: r0 = openat$kvm(0xffffffffffffff9c, &(0x7f0000000140)='/dev/kvm\x00', 0x0, 0x0) r1 = ioctl$KVM_CREATE_VM(r0, 0xae01, 0x0) r2 = ioctl$KVM_CREATE_VCPU(r1, 0xae41, 0x0) ioctl$KVM_SET_USER_MEMORY_REGION(r1, 0x4020ae46, &(0x7f0000000400)={0x0, 0x3, 0x0, 0x2000, &(0x7f0000000000/0x2000)=nil}) syz_kvm_setup_cpu$x86(r1, 0xffffffffffffffff, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x0, 0x0, 0xfffffffffffffe78) sendmmsg$unix(0xffffffffffffffff, &(0x7f0000002780)=[{0x0, 0x0, &(0x7f0000001d00)=[{&(0x7f0000000bc0)="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", 0x3c5}], 0x1}], 0x1, 0x0) ioctl$KVM_REGISTER_COALESCED_MMIO(r1, 0x4010ae67, &(0x7f00000000c0)={0x0, 0x15200}) syz_kvm_setup_cpu$x86(0xffffffffffffffff, r2, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x8, 0x0, 0x0) ioctl$KVM_RUN(r2, 0xae80, 0x840f0000) [ 1107.003365] gfs2: not a GFS2 filesystem [ 1107.022767] gfs2: fsid=_: can't read superblock [ 1107.034706] F2FS-fs (loop2): Can't find valid F2FS filesystem in 2th superblock [ 1107.045506] gfs2: fsid=_: can't read superblock: -22 [ 1107.093572] F2FS-fs (loop2): Magic Mismatch, valid(0xf2f52010) - read(0x0) [ 1107.142226] F2FS-fs (loop2): Can't find valid F2FS filesystem in 1th superblock [ 1107.170993] sysfs: cannot create duplicate filename '/fs/gfs2/_' [ 1107.207901] F2FS-fs (loop2): Magic Mismatch, valid(0xf2f52010) - read(0x0) [ 1107.212112] CPU: 0 PID: 21133 Comm: syz-executor3 Not tainted 4.20.0-next-20190103 #4 [ 1107.222901] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 1107.231993] F2FS-fs (loop2): Can't find valid F2FS filesystem in 2th superblock [ 1107.232255] Call Trace: [ 1107.242298] dump_stack+0x1db/0x2d0 [ 1107.245937] ? dump_stack_print_info.cold+0x20/0x20 [ 1107.250959] ? _raw_spin_unlock_irqrestore+0xa4/0xe0 [ 1107.256078] sysfs_warn_dup.cold+0x1c/0x31 [ 1107.260320] sysfs_create_dir_ns+0x2ce/0x330 [ 1107.264732] ? sysfs_create_mount_point+0xa0/0xa0 [ 1107.269568] ? do_raw_spin_trylock+0x270/0x270 [ 1107.274163] kobject_add_internal.cold+0x129/0x6d8 [ 1107.279102] ? kobj_ns_type_registered+0x60/0x60 [ 1107.283853] ? kfree_const+0x59/0x70 [ 1107.287561] ? rcu_read_lock_sched_held+0x110/0x130 [ 1107.292573] ? kfree+0x1fa/0x230 [ 1107.295939] ? kfree_const+0x5e/0x70 [ 1107.299649] kobject_init_and_add+0x101/0x160 [ 1107.304139] ? kobject_add_internal+0x4b0/0x4b0 [ 1107.308808] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 1107.314358] ? vsnprintf+0x368/0x1b10 [ 1107.318172] gfs2_sys_fs_add+0x210/0x500 [ 1107.322231] ? recover_store+0x1a0/0x1a0 [ 1107.326290] ? snprintf+0xbb/0xf0 [ 1107.329747] ? vsprintf+0x30/0x40 [ 1107.333206] ? set_blocksize+0x2bf/0x340 [ 1107.337278] ? memcpy+0x46/0x50 [ 1107.340561] fill_super+0x894/0x1990 [ 1107.344283] ? gfs2_online_uevent+0x2d0/0x2d0 [ 1107.348788] ? snprintf+0xbb/0xf0 [ 1107.352238] ? vsprintf+0x40/0x40 [ 1107.355697] ? ns_capable_common+0x141/0x170 [ 1107.360123] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 1107.365145] ? set_blocksize+0x2bf/0x340 [ 1107.369204] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 1107.374741] gfs2_mount+0x5db/0x6ee [ 1107.378369] ? fill_super+0x1990/0x1990 [ 1107.382370] ? vfs_parse_fs_string+0x1c5/0x2b0 [ 1107.386964] ? vfs_parse_fs_param+0x4b0/0x4b0 [ 1107.391455] ? fill_super+0x1990/0x1990 [ 1107.395428] legacy_get_tree+0xf2/0x200 [ 1107.399408] vfs_get_tree+0x123/0x450 [ 1107.403214] do_mount+0x1622/0x2fa0 [ 1107.406854] ? copy_mount_string+0x40/0x40 [ 1107.411101] ? kmem_cache_alloc_trace+0x354/0x760 [ 1107.415949] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 1107.421672] ? copy_mount_options+0x30e/0x440 [ 1107.426189] ksys_mount+0xdb/0x150 [ 1107.429746] __x64_sys_mount+0xbe/0x150 [ 1107.433725] do_syscall_64+0x1a3/0x800 [ 1107.437609] ? syscall_return_slowpath+0x5f0/0x5f0 [ 1107.442545] ? prepare_exit_to_usermode+0x232/0x3b0 [ 1107.447572] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 1107.452428] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 1107.457613] RIP: 0033:0x45a93a [ 1107.460818] Code: b8 a6 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 ed 8c fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 0f 83 ca 8c fb ff c3 66 0f 1f 84 00 00 00 00 00 [ 1107.479711] RSP: 002b:00007fdbfe5d2a88 EFLAGS: 00000206 ORIG_RAX: 00000000000000a5 [ 1107.487410] RAX: ffffffffffffffda RBX: 00007fdbfe5d2b30 RCX: 000000000045a93a [ 1107.494686] RDX: 00007fdbfe5d2ad0 RSI: 0000000020000200 RDI: 00007fdbfe5d2af0 [ 1107.501965] RBP: 0000000020000200 R08: 00007fdbfe5d2b30 R09: 00007fdbfe5d2ad0 [ 1107.509227] R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000003 [ 1107.516490] R13: 0000000000000000 R14: 00000000004db380 R15: 00000000ffffffff 03:47:27 executing program 5: r0 = socket$inet(0x2, 0x4000000000000001, 0x0) setsockopt$inet_tcp_int(r0, 0x6, 0x80000000000002, &(0x7f0000000040)=0x74, 0x4) bind$inet(r0, &(0x7f0000000180)={0x2, 0x4e23, @multicast1}, 0x10) sendto$inet(r0, 0x0, 0x0, 0x200007fd, &(0x7f0000e68000)={0x2, 0x4e23, @local}, 0x10) write$binfmt_elf64(r0, &(0x7f00000012c0)=ANY=[@ANYBLOB="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"], 0x205) mmap(&(0x7f0000000000/0xb36000)=nil, 0xb36000, 0x3, 0x8031, 0xffffffffffffffff, 0x0) sendmmsg$inet_sctp(r0, &(0x7f0000002600)=[{0x0, 0x0, &(0x7f0000000240)=[{&(0x7f0000000380)="d4", 0x1}], 0x1, 0x0, 0x0, 0xf00}], 0x1, 0x0) 03:47:27 executing program 4: syz_mount_image$gfs2(&(0x7f0000000140)='gfs2\x00', &(0x7f0000000200)='./file0\x00', 0x3f00000000000000, 0x0, 0x0, 0x0, &(0x7f00000003c0)={[{@locktable={'locktable', 0x3d, '/'}}, {@lockproto_nolock='lockproto=lock_nolock'}]}) socketpair$unix(0x1, 0x1, 0x0, &(0x7f0000000180)) [ 1107.597882] kobject_add_internal failed for _ with -EEXIST, don't try to register things with the same name in the same directory. [ 1107.611411] gfs2: fsid=_: error -17 adding sysfs files 03:47:27 executing program 2: syz_mount_image$gfs2(&(0x7f0000000140)='gfs2\x00', &(0x7f0000000200)='./file0\x00', 0x0, 0x0, 0x0, 0x0, 0x0) r0 = openat$vsock(0xffffffffffffff9c, &(0x7f0000000000)='/dev/vsock\x00', 0x10b01, 0x0) fcntl$F_GET_FILE_RW_HINT(r0, 0x40d, &(0x7f0000000040)) socketpair$unix(0x1, 0x0, 0x0, 0x0) 03:47:27 executing program 0: socketpair$unix(0x1, 0x1, 0x0, &(0x7f0000000440)={0xffffffffffffffff, 0xffffffffffffffff}) ioctl$PERF_EVENT_IOC_ENABLE(r0, 0x8912, 0x400200) r1 = openat$kvm(0xffffffffffffff9c, &(0x7f00000000c0)='/dev/kvm\x00', 0x0, 0x0) openat$dlm_monitor(0xffffffffffffff9c, &(0x7f0000000340)='/dev/dlm-monitor\x00', 0x0, 0x0) r2 = ioctl$KVM_CREATE_VM(r1, 0xae01, 0x0) r3 = ioctl$KVM_CREATE_VCPU(r2, 0xae41, 0x0) syz_kvm_setup_cpu$x86(r2, 0xffffffffffffffff, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x0, 0x0, 0x0) syz_kvm_setup_cpu$x86(0xffffffffffffffff, r3, &(0x7f0000000000/0x18000)=nil, &(0x7f00000001c0)=[@text64={0x40, &(0x7f0000000040)="b9800000c00f3235001000000f30f24c0f2c49e8426dc4027d3493b80800003626660f7e676d660f1678b06cc403f9dfbeb70000000bc7442400f5000000c744240284d178bcff1c24f2f347dbe1", 0x4e}], 0x1, 0x48, 0x0, 0x0) pipe2(&(0x7f0000000000), 0x0) ioctl$KVM_RUN(r3, 0xae80, 0x4) [ 1107.788891] gfs2: fsid=_: Trying to join cluster "lock_nolock", "_" [ 1107.799836] sysfs: cannot create duplicate filename '/fs/gfs2/_' [ 1107.820228] gfs2: fsid=_: Now mounting FS... [ 1107.835181] gfs2: not a GFS2 filesystem [ 1107.852000] CPU: 1 PID: 21133 Comm: syz-executor3 Not tainted 4.20.0-next-20190103 #4 [ 1107.858189] gfs2: not a GFS2 filesystem [ 1107.859989] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 1107.859995] Call Trace: [ 1107.860019] dump_stack+0x1db/0x2d0 [ 1107.860041] ? dump_stack_print_info.cold+0x20/0x20 [ 1107.860087] ? _raw_spin_unlock_irqrestore+0xa4/0xe0 [ 1107.889709] sysfs_warn_dup.cold+0x1c/0x31 [ 1107.893977] sysfs_create_dir_ns+0x2ce/0x330 [ 1107.898400] ? sysfs_create_mount_point+0xa0/0xa0 [ 1107.901669] gfs2: fsid=_: can't read superblock [ 1107.903261] ? do_raw_spin_trylock+0x270/0x270 [ 1107.903308] kobject_add_internal.cold+0x129/0x6d8 [ 1107.903330] ? kobj_ns_type_registered+0x60/0x60 [ 1107.903344] ? kfree_const+0x59/0x70 [ 1107.903358] ? rcu_read_lock_sched_held+0x110/0x130 [ 1107.903374] ? kfree+0x1fa/0x230 [ 1107.903392] ? kfree_const+0x5e/0x70 [ 1107.903411] kobject_init_and_add+0x101/0x160 [ 1107.919420] gfs2: fsid=_: can't read superblock: -22 [ 1107.922313] ? kobject_add_internal+0x4b0/0x4b0 [ 1107.922333] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 1107.922347] ? vsnprintf+0x368/0x1b10 [ 1107.922373] gfs2_sys_fs_add+0x210/0x500 [ 1107.965768] ? recover_store+0x1a0/0x1a0 [ 1107.969844] ? snprintf+0xbb/0xf0 [ 1107.973309] ? vsprintf+0x30/0x40 [ 1107.976765] ? set_blocksize+0x2bf/0x340 [ 1107.980874] ? memcpy+0x46/0x50 [ 1107.984190] fill_super+0x894/0x1990 [ 1107.987924] ? gfs2_online_uevent+0x2d0/0x2d0 [ 1107.992435] ? snprintf+0xbb/0xf0 [ 1107.995922] ? vsprintf+0x40/0x40 [ 1107.999389] ? ns_capable_common+0x141/0x170 [ 1108.003801] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 1108.008839] ? set_blocksize+0x2bf/0x340 [ 1108.012911] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 1108.018453] gfs2_mount+0x5db/0x6ee [ 1108.022094] ? fill_super+0x1990/0x1990 [ 1108.022154] ? vfs_parse_fs_string+0x1c5/0x2b0 [ 1108.022171] ? vfs_parse_fs_param+0x4b0/0x4b0 [ 1108.035196] ? fill_super+0x1990/0x1990 [ 1108.039182] legacy_get_tree+0xf2/0x200 [ 1108.043178] vfs_get_tree+0x123/0x450 [ 1108.046997] do_mount+0x1622/0x2fa0 [ 1108.050650] ? copy_mount_string+0x40/0x40 [ 1108.054891] ? kmem_cache_alloc_trace+0x354/0x760 [ 1108.054909] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 1108.054924] ? _copy_from_user+0xdd/0x150 [ 1108.054941] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 1108.054955] ? copy_mount_options+0x30e/0x440 [ 1108.054975] ksys_mount+0xdb/0x150 [ 1108.054995] __x64_sys_mount+0xbe/0x150 [ 1108.055013] do_syscall_64+0x1a3/0x800 [ 1108.055028] ? syscall_return_slowpath+0x5f0/0x5f0 [ 1108.055067] ? prepare_exit_to_usermode+0x232/0x3b0 03:47:27 executing program 1: r0 = openat$kvm(0xffffffffffffff9c, &(0x7f0000000140)='/dev/kvm\x00', 0x0, 0x0) r1 = ioctl$KVM_CREATE_VM(r0, 0xae01, 0x0) r2 = ioctl$KVM_CREATE_VCPU(r1, 0xae41, 0x0) ioctl$KVM_SET_USER_MEMORY_REGION(r1, 0x4020ae46, &(0x7f0000000400)={0x0, 0x3, 0x0, 0x2000, &(0x7f0000000000/0x2000)=nil}) syz_kvm_setup_cpu$x86(r1, 0xffffffffffffffff, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x0, 0x0, 0xfffffffffffffe78) sendmmsg$unix(0xffffffffffffffff, &(0x7f0000002780)=[{0x0, 0x0, &(0x7f0000001d00)=[{&(0x7f0000000bc0)="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", 0x3c5}], 0x1}], 0x1, 0x0) ioctl$KVM_REGISTER_COALESCED_MMIO(r1, 0x4010ae67, &(0x7f00000000c0)={0x0, 0x15200}) syz_kvm_setup_cpu$x86(0xffffffffffffffff, r2, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x8, 0x0, 0x0) ioctl$KVM_RUN(r2, 0xae80, 0x800f0000) [ 1108.055088] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 1108.075110] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 1108.095855] RIP: 0033:0x45a93a [ 1108.095870] Code: b8 a6 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 ed 8c fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 0f 83 ca 8c fb ff c3 66 0f 1f 84 00 00 00 00 00 [ 1108.095878] RSP: 002b:00007fdbfe5d2a88 EFLAGS: 00000206 ORIG_RAX: 00000000000000a5 [ 1108.095891] RAX: ffffffffffffffda RBX: 00007fdbfe5d2b30 RCX: 000000000045a93a [ 1108.095899] RDX: 00007fdbfe5d2ad0 RSI: 0000000020000200 RDI: 00007fdbfe5d2af0 [ 1108.095907] RBP: 0000000020000200 R08: 00007fdbfe5d2b30 R09: 00007fdbfe5d2ad0 [ 1108.095915] R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000003 [ 1108.095922] R13: 0000000000000000 R14: 00000000004db380 R15: 00000000ffffffff [ 1108.113598] kobject_add_internal failed for _ with -EEXIST, don't try to register things with the same name in the same directory. [ 1108.190829] gfs2: fsid=_: error -17 adding sysfs files 03:47:28 executing program 3: syz_mount_image$gfs2(&(0x7f0000000140)='gfs2\x00', &(0x7f0000000200)='./file0\x00', 0x0, 0x0, 0x0, 0x0, &(0x7f00000003c0)={[{@locktable={'locktable', 0x3d, '/'}}, {@lockproto_nolock='lockproto=lock_nolock'}]}) 03:47:28 executing program 4: syz_mount_image$gfs2(&(0x7f0000000140)='gfs2\x00', &(0x7f0000000200)='./file0\x00', 0x1400000000000000, 0x0, 0x0, 0x0, &(0x7f00000003c0)={[{@locktable={'locktable', 0x3d, '/'}}, {@lockproto_nolock='lockproto=lock_nolock'}]}) socketpair$unix(0x1, 0x1, 0x0, &(0x7f0000000180)) 03:47:28 executing program 2: socketpair$unix(0x1, 0xfffffffffffffffb, 0x0, 0x0) 03:47:28 executing program 0: socketpair$unix(0x1, 0x1, 0x0, &(0x7f0000000440)={0xffffffffffffffff, 0xffffffffffffffff}) ioctl$PERF_EVENT_IOC_ENABLE(r0, 0x8912, 0x400200) r1 = openat$kvm(0xffffffffffffff9c, &(0x7f00000000c0)='/dev/kvm\x00', 0x0, 0x0) openat$dlm_monitor(0xffffffffffffff9c, &(0x7f0000000340)='/dev/dlm-monitor\x00', 0x0, 0x0) r2 = ioctl$KVM_CREATE_VM(r1, 0xae01, 0x0) r3 = ioctl$KVM_CREATE_VCPU(r2, 0xae41, 0x0) syz_kvm_setup_cpu$x86(r2, 0xffffffffffffffff, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x0, 0x0, 0x0) syz_kvm_setup_cpu$x86(0xffffffffffffffff, r3, &(0x7f0000000000/0x18000)=nil, &(0x7f00000001c0)=[@text64={0x40, &(0x7f0000000040)="b9800000c00f3235001000000f30f24c0f2c49e8426dc4027d3493b80800003626660f7e676d660f1678b06cc403f9dfbeb70000000bc7442400f5000000c744240284d178bcff1c24f2f347dbe1", 0x4e}], 0x1, 0x48, 0x0, 0x0) pipe2(&(0x7f0000000000), 0x0) ioctl$KVM_RUN(r3, 0xae80, 0xa0010000) 03:47:28 executing program 1: r0 = openat$kvm(0xffffffffffffff9c, &(0x7f0000000140)='/dev/kvm\x00', 0x0, 0x0) r1 = ioctl$KVM_CREATE_VM(r0, 0xae01, 0x0) r2 = ioctl$KVM_CREATE_VCPU(r1, 0xae41, 0x0) ioctl$KVM_SET_USER_MEMORY_REGION(r1, 0x4020ae46, &(0x7f0000000400)={0x0, 0x3, 0x0, 0x2000, &(0x7f0000000000/0x2000)=nil}) syz_kvm_setup_cpu$x86(r1, 0xffffffffffffffff, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x0, 0x0, 0xfffffffffffffe78) sendmmsg$unix(0xffffffffffffffff, &(0x7f0000002780)=[{0x0, 0x0, &(0x7f0000001d00)=[{&(0x7f0000000bc0)="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", 0x3c5}], 0x1}], 0x1, 0x0) ioctl$KVM_REGISTER_COALESCED_MMIO(r1, 0x4010ae67, &(0x7f00000000c0)={0x0, 0x15200}) syz_kvm_setup_cpu$x86(0xffffffffffffffff, r2, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x8, 0x0, 0x0) ioctl$KVM_RUN(r2, 0xae80, 0x8000a0) [ 1108.466400] gfs2: fsid=_: Trying to join cluster "lock_nolock", "_" [ 1108.502768] gfs2: fsid=_: Now mounting FS... 03:47:28 executing program 2: mount$9p_virtio(&(0x7f0000000080)='gfs2\x00', &(0x7f00000000c0)='./file0\x00', &(0x7f0000000100)='9p\x00', 0x8000, &(0x7f0000000240)={'trans=virtio,', {[{@noextend='noextend'}], [{@obj_role={'obj_role', 0x3d, 'security@^vboxnet1\'!'}}, {@func={'func', 0x3d, 'KEXEC_KERNEL_CHECK'}}, {@subj_user={'subj_user', 0x3d, 'cgroup'}}, {@smackfsfloor={'smackfsfloor', 0x3d, '^'}}, {@subj_type={'subj_type', 0x3d, 'systemeth0'}}, {@smackfsdef={'smackfsdef', 0x3d, 'gfs2\x00'}}]}}) symlink(&(0x7f0000000000)='./file0\x00', &(0x7f0000000040)='./file0\x00') syz_mount_image$gfs2(&(0x7f0000000140)='gfs2\x00', &(0x7f0000000200)='./file0\x00', 0x0, 0x0, 0x0, 0x0, 0x0) socketpair$unix(0x1, 0x0, 0x0, 0x0) [ 1108.535925] sysfs: cannot create duplicate filename '/fs/gfs2/_' [ 1108.553517] gfs2: not a GFS2 filesystem [ 1108.583127] gfs2: fsid=_: can't read superblock [ 1108.591548] CPU: 0 PID: 21183 Comm: syz-executor4 Not tainted 4.20.0-next-20190103 #4 [ 1108.599539] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 1108.608878] Call Trace: [ 1108.611470] dump_stack+0x1db/0x2d0 [ 1108.611491] ? dump_stack_print_info.cold+0x20/0x20 [ 1108.611512] ? _raw_spin_unlock_irqrestore+0xa4/0xe0 [ 1108.611539] sysfs_warn_dup.cold+0x1c/0x31 [ 1108.629489] sysfs_create_dir_ns+0x2ce/0x330 [ 1108.633917] ? sysfs_create_mount_point+0xa0/0xa0 [ 1108.638764] ? do_raw_spin_trylock+0x270/0x270 [ 1108.643363] kobject_add_internal.cold+0x129/0x6d8 [ 1108.648305] ? kobj_ns_type_registered+0x60/0x60 [ 1108.653078] ? kfree_const+0x59/0x70 [ 1108.656818] ? rcu_read_lock_sched_held+0x110/0x130 [ 1108.661876] ? kfree+0x1fa/0x230 [ 1108.665252] ? kfree_const+0x5e/0x70 [ 1108.668981] kobject_init_and_add+0x101/0x160 [ 1108.673480] ? kobject_add_internal+0x4b0/0x4b0 [ 1108.678150] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 1108.683702] ? vsnprintf+0x368/0x1b10 [ 1108.687516] gfs2_sys_fs_add+0x210/0x500 [ 1108.691603] ? recover_store+0x1a0/0x1a0 [ 1108.695670] ? snprintf+0xbb/0xf0 [ 1108.699124] ? vsprintf+0x30/0x40 [ 1108.699141] ? set_blocksize+0x2bf/0x340 [ 1108.699160] ? memcpy+0x46/0x50 [ 1108.699181] fill_super+0x894/0x1990 [ 1108.699205] ? gfs2_online_uevent+0x2d0/0x2d0 [ 1108.706697] ? snprintf+0xbb/0xf0 [ 1108.706711] ? vsprintf+0x40/0x40 [ 1108.706731] ? ns_capable_common+0x141/0x170 [ 1108.706744] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 1108.706756] ? set_blocksize+0x2bf/0x340 [ 1108.706771] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 1108.729492] gfs2_mount+0x5db/0x6ee [ 1108.729523] ? fill_super+0x1990/0x1990 [ 1108.729590] ? vfs_parse_fs_string+0x1c5/0x2b0 [ 1108.729606] ? vfs_parse_fs_param+0x4b0/0x4b0 [ 1108.738674] ? fill_super+0x1990/0x1990 [ 1108.738691] legacy_get_tree+0xf2/0x200 [ 1108.738713] vfs_get_tree+0x123/0x450 [ 1108.738733] do_mount+0x1622/0x2fa0 [ 1108.738757] ? copy_mount_string+0x40/0x40 [ 1108.780449] ? kmem_cache_alloc_trace+0x354/0x760 [ 1108.785293] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 1108.790837] ? copy_mount_options+0x30e/0x440 [ 1108.794644] gfs2: fsid=_: can't read superblock: -22 [ 1108.795339] ksys_mount+0xdb/0x150 [ 1108.803963] __x64_sys_mount+0xbe/0x150 [ 1108.807932] do_syscall_64+0x1a3/0x800 [ 1108.811835] ? syscall_return_slowpath+0x5f0/0x5f0 [ 1108.816802] ? prepare_exit_to_usermode+0x232/0x3b0 [ 1108.821836] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 1108.826706] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 1108.831906] RIP: 0033:0x45a93a [ 1108.835092] Code: b8 a6 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 ed 8c fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 0f 83 ca 8c fb ff c3 66 0f 1f 84 00 00 00 00 00 [ 1108.853984] RSP: 002b:00007ff699fe9a88 EFLAGS: 00000206 ORIG_RAX: 00000000000000a5 [ 1108.861695] RAX: ffffffffffffffda RBX: 00007ff699fe9b30 RCX: 000000000045a93a [ 1108.868950] RDX: 00007ff699fe9ad0 RSI: 0000000020000200 RDI: 00007ff699fe9af0 [ 1108.876215] RBP: 0000000020000200 R08: 00007ff699fe9b30 R09: 00007ff699fe9ad0 03:47:28 executing program 1: r0 = openat$kvm(0xffffffffffffff9c, &(0x7f0000000140)='/dev/kvm\x00', 0x0, 0x0) r1 = ioctl$KVM_CREATE_VM(r0, 0xae01, 0x0) r2 = ioctl$KVM_CREATE_VCPU(r1, 0xae41, 0x0) ioctl$KVM_SET_USER_MEMORY_REGION(r1, 0x4020ae46, &(0x7f0000000400)={0x0, 0x3, 0x0, 0x2000, &(0x7f0000000000/0x2000)=nil}) syz_kvm_setup_cpu$x86(r1, 0xffffffffffffffff, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x0, 0x0, 0xfffffffffffffe78) sendmmsg$unix(0xffffffffffffffff, &(0x7f0000002780)=[{0x0, 0x0, &(0x7f0000001d00)=[{&(0x7f0000000bc0)="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", 0x3c5}], 0x1}], 0x1, 0x0) ioctl$KVM_REGISTER_COALESCED_MMIO(r1, 0x4010ae67, &(0x7f00000000c0)={0x0, 0x15200}) syz_kvm_setup_cpu$x86(0xffffffffffffffff, r2, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x8, 0x0, 0x0) ioctl$KVM_RUN(r2, 0xae80, 0x11) [ 1108.883479] R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000003 [ 1108.890738] R13: 0000000000000000 R14: 00000000004db380 R15: 00000000ffffffff 03:47:28 executing program 5: r0 = socket$inet(0x2, 0x4000000000000001, 0x0) setsockopt$inet_tcp_int(r0, 0x6, 0x80000000000002, &(0x7f0000000040)=0x74, 0x4) bind$inet(r0, &(0x7f0000000180)={0x2, 0x4e23, @multicast1}, 0x10) sendto$inet(r0, 0x0, 0x0, 0x200007fd, &(0x7f0000e68000)={0x2, 0x4e23, @local}, 0x10) write$binfmt_elf64(r0, &(0x7f00000012c0)=ANY=[@ANYBLOB="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"], 0x205) mmap(&(0x7f0000000000/0xb36000)=nil, 0xb36000, 0x3, 0x8031, 0xffffffffffffffff, 0x0) sendmmsg$inet_sctp(r0, &(0x7f0000002600)=[{0x0, 0x0, &(0x7f0000000240)=[{&(0x7f0000000380)="d4", 0x1}], 0x1, 0x0, 0x0, 0xf00}], 0x1, 0x0) 03:47:28 executing program 0: socketpair$unix(0x1, 0x1, 0x0, &(0x7f0000000440)={0xffffffffffffffff, 0xffffffffffffffff}) ioctl$PERF_EVENT_IOC_ENABLE(r0, 0x8912, 0x400200) r1 = openat$kvm(0xffffffffffffff9c, &(0x7f00000000c0)='/dev/kvm\x00', 0x0, 0x0) openat$dlm_monitor(0xffffffffffffff9c, &(0x7f0000000340)='/dev/dlm-monitor\x00', 0x0, 0x0) r2 = ioctl$KVM_CREATE_VM(r1, 0xae01, 0x0) r3 = ioctl$KVM_CREATE_VCPU(r2, 0xae41, 0x0) syz_kvm_setup_cpu$x86(r2, 0xffffffffffffffff, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x0, 0x0, 0x0) syz_kvm_setup_cpu$x86(0xffffffffffffffff, r3, &(0x7f0000000000/0x18000)=nil, &(0x7f00000001c0)=[@text64={0x40, &(0x7f0000000040)="b9800000c00f3235001000000f30f24c0f2c49e8426dc4027d3493b80800003626660f7e676d660f1678b06cc403f9dfbeb70000000bc7442400f5000000c744240284d178bcff1c24f2f347dbe1", 0x4e}], 0x1, 0x48, 0x0, 0x0) pipe2(&(0x7f0000000000), 0x0) ioctl$KVM_RUN(r3, 0xae80, 0x8000a0) [ 1109.069946] kobject_add_internal failed for _ with -EEXIST, don't try to register things with the same name in the same directory. [ 1109.082447] gfs2: fsid=_: error -17 adding sysfs files 03:47:28 executing program 2: syz_mount_image$gfs2(&(0x7f0000000140)='gfs2\x00', &(0x7f0000000200)='./file0\x00', 0x0, 0x0, 0x0, 0x0, 0x0) umount2(&(0x7f0000000000)='./file0\x00', 0xd) r0 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000080)='/dev/vcs\x00', 0x200, 0x0) socketpair$unix(0x1, 0x0, 0x0, 0x0) ioctl$EVIOCGPROP(r0, 0x80404509, &(0x7f0000000240)=""/138) readahead(r0, 0x4, 0xe8f7) 03:47:28 executing program 3: syz_mount_image$gfs2(&(0x7f0000000140)='gfs2\x00', &(0x7f0000000200)='./file0\x00', 0x0, 0x0, 0x0, 0x0, &(0x7f00000003c0)={[{@locktable={'locktable', 0x3d, '/'}}, {@lockproto_nolock='lockproto=lock_nolock'}]}) [ 1109.309769] gfs2: not a GFS2 filesystem 03:47:29 executing program 1: r0 = openat$kvm(0xffffffffffffff9c, &(0x7f0000000140)='/dev/kvm\x00', 0x0, 0x0) r1 = ioctl$KVM_CREATE_VM(r0, 0xae01, 0x0) r2 = ioctl$KVM_CREATE_VCPU(r1, 0xae41, 0x0) ioctl$KVM_SET_USER_MEMORY_REGION(r1, 0x4020ae46, &(0x7f0000000400)={0x0, 0x3, 0x0, 0x2000, &(0x7f0000000000/0x2000)=nil}) syz_kvm_setup_cpu$x86(r1, 0xffffffffffffffff, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x0, 0x0, 0xfffffffffffffe78) sendmmsg$unix(0xffffffffffffffff, &(0x7f0000002780)=[{0x0, 0x0, &(0x7f0000001d00)=[{&(0x7f0000000bc0)="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", 0x3c5}], 0x1}], 0x1, 0x0) ioctl$KVM_REGISTER_COALESCED_MMIO(r1, 0x4010ae67, &(0x7f00000000c0)={0x0, 0x15200}) syz_kvm_setup_cpu$x86(0xffffffffffffffff, r2, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x8, 0x0, 0x0) ioctl$KVM_RUN(r2, 0xae80, 0x47700) 03:47:29 executing program 0: socketpair$unix(0x1, 0x1, 0x0, &(0x7f0000000440)={0xffffffffffffffff, 0xffffffffffffffff}) ioctl$PERF_EVENT_IOC_ENABLE(r0, 0x8912, 0x400200) r1 = openat$kvm(0xffffffffffffff9c, &(0x7f00000000c0)='/dev/kvm\x00', 0x0, 0x0) openat$dlm_monitor(0xffffffffffffff9c, &(0x7f0000000340)='/dev/dlm-monitor\x00', 0x0, 0x0) r2 = ioctl$KVM_CREATE_VM(r1, 0xae01, 0x0) r3 = ioctl$KVM_CREATE_VCPU(r2, 0xae41, 0x0) syz_kvm_setup_cpu$x86(r2, 0xffffffffffffffff, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x0, 0x0, 0x0) syz_kvm_setup_cpu$x86(0xffffffffffffffff, r3, &(0x7f0000000000/0x18000)=nil, &(0x7f00000001c0)=[@text64={0x40, &(0x7f0000000040)="b9800000c00f3235001000000f30f24c0f2c49e8426dc4027d3493b80800003626660f7e676d660f1678b06cc403f9dfbeb70000000bc7442400f5000000c744240284d178bcff1c24f2f347dbe1", 0x4e}], 0x1, 0x48, 0x0, 0x0) pipe2(&(0x7f0000000000), 0x0) ioctl$KVM_RUN(r3, 0xae80, 0x300) [ 1109.417472] gfs2: not a GFS2 filesystem [ 1109.455090] gfs2: fsid=_: Trying to join cluster "lock_nolock", "_" [ 1109.463320] sysfs: cannot create duplicate filename '/fs/gfs2/_' [ 1109.469487] CPU: 1 PID: 21183 Comm: syz-executor4 Not tainted 4.20.0-next-20190103 #4 [ 1109.477454] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 1109.486800] Call Trace: [ 1109.489398] dump_stack+0x1db/0x2d0 [ 1109.493031] ? dump_stack_print_info.cold+0x20/0x20 [ 1109.498078] ? _raw_spin_unlock_irqrestore+0xa4/0xe0 [ 1109.503194] sysfs_warn_dup.cold+0x1c/0x31 [ 1109.507433] sysfs_create_dir_ns+0x2ce/0x330 [ 1109.511843] ? sysfs_create_mount_point+0xa0/0xa0 [ 1109.516681] ? do_raw_spin_trylock+0x270/0x270 [ 1109.521275] kobject_add_internal.cold+0x129/0x6d8 [ 1109.526658] ? kobj_ns_type_registered+0x60/0x60 [ 1109.531408] ? kfree_const+0x59/0x70 [ 1109.535117] ? rcu_read_lock_sched_held+0x110/0x130 [ 1109.540148] ? kfree+0x1fa/0x230 [ 1109.543510] ? kfree_const+0x5e/0x70 [ 1109.547223] kobject_init_and_add+0x101/0x160 [ 1109.551714] ? kobject_add_internal+0x4b0/0x4b0 [ 1109.556385] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 1109.561914] ? vsnprintf+0x368/0x1b10 [ 1109.565717] gfs2_sys_fs_add+0x210/0x500 [ 1109.569774] ? recover_store+0x1a0/0x1a0 [ 1109.573842] ? snprintf+0xbb/0xf0 [ 1109.577290] ? vsprintf+0x30/0x40 [ 1109.580749] ? set_blocksize+0x2bf/0x340 [ 1109.584820] ? memcpy+0x46/0x50 [ 1109.588109] fill_super+0x894/0x1990 [ 1109.591826] ? gfs2_online_uevent+0x2d0/0x2d0 [ 1109.596331] ? snprintf+0xbb/0xf0 [ 1109.599774] ? vsprintf+0x40/0x40 [ 1109.603237] ? ns_capable_common+0x141/0x170 [ 1109.607644] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 1109.612684] ? set_blocksize+0x2bf/0x340 [ 1109.616782] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 1109.622319] gfs2_mount+0x5db/0x6ee [ 1109.625944] ? fill_super+0x1990/0x1990 [ 1109.629931] ? vfs_parse_fs_string+0x1c5/0x2b0 [ 1109.634543] ? vfs_parse_fs_param+0x4b0/0x4b0 [ 1109.639030] ? fill_super+0x1990/0x1990 [ 1109.643003] legacy_get_tree+0xf2/0x200 [ 1109.646987] vfs_get_tree+0x123/0x450 [ 1109.650805] do_mount+0x1622/0x2fa0 [ 1109.654456] ? copy_mount_string+0x40/0x40 [ 1109.658710] ? kmem_cache_alloc_trace+0x354/0x760 [ 1109.663569] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 1109.669108] ? copy_mount_options+0x30e/0x440 [ 1109.673603] ksys_mount+0xdb/0x150 [ 1109.677151] __x64_sys_mount+0xbe/0x150 [ 1109.681150] do_syscall_64+0x1a3/0x800 [ 1109.685035] ? syscall_return_slowpath+0x5f0/0x5f0 [ 1109.689968] ? prepare_exit_to_usermode+0x232/0x3b0 [ 1109.694985] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 1109.699836] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 1109.705015] RIP: 0033:0x45a93a [ 1109.708196] Code: b8 a6 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 ed 8c fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 0f 83 ca 8c fb ff c3 66 0f 1f 84 00 00 00 00 00 [ 1109.727107] RSP: 002b:00007ff699fe9a88 EFLAGS: 00000206 ORIG_RAX: 00000000000000a5 [ 1109.734822] RAX: ffffffffffffffda RBX: 00007ff699fe9b30 RCX: 000000000045a93a [ 1109.742106] RDX: 00007ff699fe9ad0 RSI: 0000000020000200 RDI: 00007ff699fe9af0 [ 1109.749383] RBP: 0000000020000200 R08: 00007ff699fe9b30 R09: 00007ff699fe9ad0 [ 1109.756650] R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000003 [ 1109.763907] R13: 0000000000000000 R14: 00000000004db380 R15: 00000000ffffffff [ 1109.779973] gfs2: fsid=_: Now mounting FS... [ 1109.813062] gfs2: not a GFS2 filesystem [ 1109.819080] gfs2: fsid=_: can't read superblock [ 1109.824497] gfs2: fsid=_: can't read superblock: -22 [ 1109.957004] kobject_add_internal failed for _ with -EEXIST, don't try to register things with the same name in the same directory. [ 1109.984958] gfs2: fsid=_: error -17 adding sysfs files [ 1110.059777] gfs2: fsid=_: Trying to join cluster "lock_nolock", "_" [ 1110.074470] gfs2: fsid=_: Now mounting FS... [ 1110.093760] gfs2: not a GFS2 filesystem [ 1110.119854] gfs2: fsid=_: can't read superblock [ 1110.136557] gfs2: fsid=_: can't read superblock: -22 03:47:29 executing program 4: syz_mount_image$gfs2(&(0x7f0000000140)='gfs2\x00', &(0x7f0000000200)='./file0\x00', 0xe7250100, 0x0, 0x0, 0x0, &(0x7f00000003c0)={[{@locktable={'locktable', 0x3d, '/'}}, {@lockproto_nolock='lockproto=lock_nolock'}]}) socketpair$unix(0x1, 0x1, 0x0, &(0x7f0000000180)) 03:47:29 executing program 2: syz_mount_image$gfs2(&(0x7f0000000140)='gfs2\x00', &(0x7f0000000200)='./file0\x00', 0x0, 0x0, 0x0, 0x100004000, 0x0) socketpair$unix(0x1, 0x0, 0x0, 0x0) r0 = syz_open_dev$adsp(&(0x7f0000000000)='/dev/adsp#\x00', 0x6, 0x400000) setsockopt$SO_BINDTODEVICE(r0, 0x1, 0x19, &(0x7f0000000180)='bcsh0\x00', 0x10) ioctl$EVIOCGEFFECTS(r0, 0x80044584, &(0x7f0000000040)=""/106) ioctl$NBD_SET_SOCK(r0, 0xab00, r0) pread64(r0, &(0x7f00000003c0)=""/125, 0x7d, 0x400000000000000) 03:47:29 executing program 0: socketpair$unix(0x1, 0x1, 0x0, &(0x7f0000000440)={0xffffffffffffffff, 0xffffffffffffffff}) ioctl$PERF_EVENT_IOC_ENABLE(r0, 0x8912, 0x400200) r1 = openat$kvm(0xffffffffffffff9c, &(0x7f00000000c0)='/dev/kvm\x00', 0x0, 0x0) openat$dlm_monitor(0xffffffffffffff9c, &(0x7f0000000340)='/dev/dlm-monitor\x00', 0x0, 0x0) r2 = ioctl$KVM_CREATE_VM(r1, 0xae01, 0x0) r3 = ioctl$KVM_CREATE_VCPU(r2, 0xae41, 0x0) syz_kvm_setup_cpu$x86(r2, 0xffffffffffffffff, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x0, 0x0, 0x0) syz_kvm_setup_cpu$x86(0xffffffffffffffff, r3, &(0x7f0000000000/0x18000)=nil, &(0x7f00000001c0)=[@text64={0x40, &(0x7f0000000040)="b9800000c00f3235001000000f30f24c0f2c49e8426dc4027d3493b80800003626660f7e676d660f1678b06cc403f9dfbeb70000000bc7442400f5000000c744240284d178bcff1c24f2f347dbe1", 0x4e}], 0x1, 0x48, 0x0, 0x0) pipe2(&(0x7f0000000000), 0x0) ioctl$KVM_RUN(r3, 0xae80, 0x231860) 03:47:29 executing program 1: r0 = openat$kvm(0xffffffffffffff9c, &(0x7f0000000140)='/dev/kvm\x00', 0x0, 0x0) r1 = ioctl$KVM_CREATE_VM(r0, 0xae01, 0x0) r2 = ioctl$KVM_CREATE_VCPU(r1, 0xae41, 0x0) ioctl$KVM_SET_USER_MEMORY_REGION(r1, 0x4020ae46, &(0x7f0000000400)={0x0, 0x3, 0x0, 0x2000, &(0x7f0000000000/0x2000)=nil}) syz_kvm_setup_cpu$x86(r1, 0xffffffffffffffff, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x0, 0x0, 0xfffffffffffffe78) sendmmsg$unix(0xffffffffffffffff, &(0x7f0000002780)=[{0x0, 0x0, &(0x7f0000001d00)=[{&(0x7f0000000bc0)="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", 0x3c5}], 0x1}], 0x1, 0x0) ioctl$KVM_REGISTER_COALESCED_MMIO(r1, 0x4010ae67, &(0x7f00000000c0)={0x0, 0x15200}) syz_kvm_setup_cpu$x86(0xffffffffffffffff, r2, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x8, 0x0, 0x0) ioctl$KVM_RUN(r2, 0xae80, 0x10) 03:47:29 executing program 5: r0 = socket$inet(0x2, 0x4000000000000001, 0x0) setsockopt$inet_tcp_int(r0, 0x6, 0x80000000000002, &(0x7f0000000040)=0x74, 0x4) bind$inet(r0, &(0x7f0000000180)={0x2, 0x4e23, @multicast1}, 0x10) sendto$inet(r0, 0x0, 0x0, 0x200007fd, &(0x7f0000e68000)={0x2, 0x4e23, @local}, 0x10) write$binfmt_elf64(r0, &(0x7f00000012c0)=ANY=[@ANYBLOB="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"], 0x207) mmap(&(0x7f0000000000/0xb36000)=nil, 0xb36000, 0x3, 0x8031, 0xffffffffffffffff, 0x0) sendmmsg$inet_sctp(r0, &(0x7f0000002600)=[{0x0, 0x0, &(0x7f0000000240)=[{&(0x7f0000000380)="d4", 0x1}], 0x1, 0x0, 0x0, 0xf00}], 0x1, 0x0) 03:47:30 executing program 3: syz_mount_image$gfs2(&(0x7f0000000140)='gfs2#', &(0x7f0000000200)='./file0\x00', 0x0, 0x0, 0x0, 0x0, &(0x7f00000003c0)={[{@locktable={'locktable', 0x3d, '/'}}, {@lockproto_nolock='lockproto=lock_nolock'}]}) 03:47:30 executing program 1: r0 = openat$kvm(0xffffffffffffff9c, &(0x7f0000000140)='/dev/kvm\x00', 0x0, 0x0) r1 = ioctl$KVM_CREATE_VM(r0, 0xae01, 0x0) r2 = ioctl$KVM_CREATE_VCPU(r1, 0xae41, 0x0) ioctl$KVM_SET_USER_MEMORY_REGION(r1, 0x4020ae46, &(0x7f0000000400)={0x0, 0x3, 0x0, 0x2000, &(0x7f0000000000/0x2000)=nil}) syz_kvm_setup_cpu$x86(r1, 0xffffffffffffffff, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x0, 0x0, 0xfffffffffffffe78) sendmmsg$unix(0xffffffffffffffff, &(0x7f0000002780)=[{0x0, 0x0, &(0x7f0000001d00)=[{&(0x7f0000000bc0)="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", 0x3c5}], 0x1}], 0x1, 0x0) ioctl$KVM_REGISTER_COALESCED_MMIO(r1, 0x4010ae67, &(0x7f00000000c0)={0x0, 0x15200}) syz_kvm_setup_cpu$x86(0xffffffffffffffff, r2, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x8, 0x0, 0x0) ioctl$KVM_RUN(r2, 0xae80, 0xf000000) 03:47:30 executing program 0: socketpair$unix(0x1, 0x1, 0x0, &(0x7f0000000440)={0xffffffffffffffff, 0xffffffffffffffff}) ioctl$PERF_EVENT_IOC_ENABLE(r0, 0x8912, 0x400200) r1 = openat$kvm(0xffffffffffffff9c, &(0x7f00000000c0)='/dev/kvm\x00', 0x0, 0x0) openat$dlm_monitor(0xffffffffffffff9c, &(0x7f0000000340)='/dev/dlm-monitor\x00', 0x0, 0x0) r2 = ioctl$KVM_CREATE_VM(r1, 0xae01, 0x0) r3 = ioctl$KVM_CREATE_VCPU(r2, 0xae41, 0x0) syz_kvm_setup_cpu$x86(r2, 0xffffffffffffffff, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x0, 0x0, 0x0) syz_kvm_setup_cpu$x86(0xffffffffffffffff, r3, &(0x7f0000000000/0x18000)=nil, &(0x7f00000001c0)=[@text64={0x40, &(0x7f0000000040)="b9800000c00f3235001000000f30f24c0f2c49e8426dc4027d3493b80800003626660f7e676d660f1678b06cc403f9dfbeb70000000bc7442400f5000000c744240284d178bcff1c24f2f347dbe1", 0x4e}], 0x1, 0x48, 0x0, 0x0) pipe2(&(0x7f0000000000), 0x0) ioctl$KVM_RUN(r3, 0xae80, 0x300000000000000) 03:47:30 executing program 2: syz_mount_image$gfs2(&(0x7f0000000140)='gfs2\x00', &(0x7f0000000200)='./file0\x00', 0x0, 0x0, 0x0, 0x0, 0x0) socketpair$unix(0x1, 0x0, 0x0, 0x0) r0 = syz_init_net_socket$llc(0x1a, 0x2, 0x0) setsockopt$llc_int(r0, 0x10c, 0x7, &(0x7f00000000c0)=0x6, 0x4) r1 = openat$rdma_cm(0xffffffffffffff9c, &(0x7f0000000100)='/dev/infiniband/rdma_cm\x00', 0x2, 0x0) getpeername$ax25(r1, &(0x7f0000000000)={{}, [@remote, @null, @null, @default, @remote, @default, @rose, @default]}, &(0x7f0000000080)=0x48) [ 1110.612341] gfs2: fsid=_: Trying to join cluster "lock_nolock", "_" [ 1110.622979] gfs2: fsid=_: Now mounting FS... [ 1110.639531] gfs2: not a GFS2 filesystem [ 1110.665896] gfs2: fsid=_: can't read superblock [ 1110.704850] gfs2: fsid=_: can't read superblock: -22 [ 1110.732972] gfs2: not a GFS2 filesystem 03:47:30 executing program 1: r0 = openat$kvm(0xffffffffffffff9c, &(0x7f0000000140)='/dev/kvm\x00', 0x0, 0x0) r1 = ioctl$KVM_CREATE_VM(r0, 0xae01, 0x0) r2 = ioctl$KVM_CREATE_VCPU(r1, 0xae41, 0x0) ioctl$KVM_SET_USER_MEMORY_REGION(r1, 0x4020ae46, &(0x7f0000000400)={0x0, 0x3, 0x0, 0x2000, &(0x7f0000000000/0x2000)=nil}) syz_kvm_setup_cpu$x86(r1, 0xffffffffffffffff, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x0, 0x0, 0xfffffffffffffe78) sendmmsg$unix(0xffffffffffffffff, &(0x7f0000002780)=[{0x0, 0x0, &(0x7f0000001d00)=[{&(0x7f0000000bc0)="b474ac0450ac6a2ff5ba4c1a19990e818d6fb646a5739e09c636550fdd39d0316e215a5a9427ac426da0b375844fb7f5ee5130d0b57cdab9af6f5f0d39c1787ec9ecde6263664c6a9859b7a0c4cbc99a05184da950f370cf65a18bff7975c0c12ca4227baa2164d031a5472d7f581c6f7eedd103d8fc89b6b4b52e5d3da0817eec8c57f722e356068b99a056ab6a693b9eebe38d75170491e07f9f69573b02b1a048f29e39cd24fed99e8606ffcbe4f617f48370ec62bd327cdfb9da8e8fef232b2e8f8f6868bb1781eab4c294befd65d9a336123bd34be8f256b5fc0420aa6e930f292a9a06365daaebd0bcaaaf5e0c12167aad0c62a48666383ee58b37df8077c5d2d5298d5247e240a78ff2543147129775f6d4a872df80d9da66c2a0a169df65141cbe88b1e280d60f6e11b25a0b5bb1bdd430378761d547f3ff7e42cc84c849e66004e30905d908e352a53f95bca84a68a6ce5ee82b69c939a196a7060bee28d8dee1ed52ae04b228bedf9302df44cc957780e42c2784d18e3695ee5e73dbe385331494af3cbcf8952e85469e9566c32692c0ceae8dab7b9553b5e8aa66edbad2ed828ba2a665a48a2822d9dc538863aea705c926c5a12fee84db545a36a13281e09e82c06211cc195cb4409bedfb7cf22f6c01fba9720bc4f447da73bb95bab6c056ce51bbc9d5b6622c54152e853f9639d2db2a5992e0f0e8f77a2e5efcfd139869cbdc902622399035d6ab8c22e33605be6850356be97ac05588720e1e215fbf5cb6633f0894e0a4dbd28708cac77792a31b00f47d18cebcb9114f1b0ffd66b587c5f9ba086fc530c6a0ac561068de208f18a3b6adc47f04bd63bd4a31544eb953398ddee5b5e4533aa529947aa46e7e517ff719e559c106f8afc570019f272a9f2d2699c7384612854de44dc40bb33aafee4e5fab1c06ceeffec56782452589f80c3946e6631c591e7f82af7e3a6422e0f35b0847f0a3049ee29b09f8aadf59c96a99576be85d6ddcf8c4d82373355add27397517402a56fd36bf877a53731413c30786431262705fb01511a778482cd85b60323b683e0e9d2f06b57678ddcf06f6da03f818e7f0b4db7045527f6e00fa26fe586fe0fcc72024fad6bab1739f6d7980d21f1fac0e7f53ee4cb254349b93a89f5695be91e5c586411b18f3f11298d979abdf4dd4796b181e623189aa73182c4c5ff346545168a520241ce23e08ade26085f654537258efaacfe1a64b2261c5180eb7c01ca6f4dc0f08f98ec12c06036278eff4c8d3b852bb2022be745861268ffbe0bb37c45452d2ac97aa6cb81db9f428688e6eab0e85ba6eb2eaecf4e8e137a2101f04b201258a71d857194610", 0x3c5}], 0x1}], 0x1, 0x0) ioctl$KVM_REGISTER_COALESCED_MMIO(r1, 0x4010ae67, &(0x7f00000000c0)={0x0, 0x15200}) syz_kvm_setup_cpu$x86(0xffffffffffffffff, r2, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x8, 0x0, 0x0) ioctl$KVM_RUN(r2, 0xae80, 0x600) 03:47:30 executing program 0: socketpair$unix(0x1, 0x1, 0x0, &(0x7f0000000440)={0xffffffffffffffff, 0xffffffffffffffff}) ioctl$PERF_EVENT_IOC_ENABLE(r0, 0x8912, 0x400200) r1 = openat$kvm(0xffffffffffffff9c, &(0x7f00000000c0)='/dev/kvm\x00', 0x0, 0x0) openat$dlm_monitor(0xffffffffffffff9c, &(0x7f0000000340)='/dev/dlm-monitor\x00', 0x0, 0x0) r2 = ioctl$KVM_CREATE_VM(r1, 0xae01, 0x0) r3 = ioctl$KVM_CREATE_VCPU(r2, 0xae41, 0x0) syz_kvm_setup_cpu$x86(r2, 0xffffffffffffffff, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x0, 0x0, 0x0) syz_kvm_setup_cpu$x86(0xffffffffffffffff, r3, &(0x7f0000000000/0x18000)=nil, &(0x7f00000001c0)=[@text64={0x40, &(0x7f0000000040)="b9800000c00f3235001000000f30f24c0f2c49e8426dc4027d3493b80800003626660f7e676d660f1678b06cc403f9dfbeb70000000bc7442400f5000000c744240284d178bcff1c24f2f347dbe1", 0x4e}], 0x1, 0x48, 0x0, 0x0) pipe2(&(0x7f0000000000), 0x0) ioctl$KVM_RUN(r3, 0xae80, 0x80ffff) 03:47:30 executing program 3: syz_mount_image$gfs2(&(0x7f0000000140)='gfs2\x00', &(0x7f0000000200)='./file0\x00', 0x0, 0x0, 0x0, 0x0, &(0x7f00000003c0)={[{@locktable={'locktable', 0x3d, '/'}}, {@lockproto_nolock='lockproto=lock_nolock'}]}) [ 1111.065646] gfs2: fsid=_: Trying to join cluster "lock_nolock", "_" [ 1111.073589] gfs2: fsid=_: Now mounting FS... [ 1111.078167] gfs2: not a GFS2 filesystem [ 1111.082290] gfs2: not a GFS2 filesystem [ 1111.089606] gfs2: fsid=_: can't read superblock [ 1111.094722] gfs2: fsid=_: can't read superblock: -22 03:47:31 executing program 1: r0 = openat$kvm(0xffffffffffffff9c, &(0x7f0000000140)='/dev/kvm\x00', 0x0, 0x0) r1 = ioctl$KVM_CREATE_VM(r0, 0xae01, 0x0) r2 = ioctl$KVM_CREATE_VCPU(r1, 0xae41, 0x0) ioctl$KVM_SET_USER_MEMORY_REGION(r1, 0x4020ae46, &(0x7f0000000400)={0x0, 0x3, 0x0, 0x2000, &(0x7f0000000000/0x2000)=nil}) syz_kvm_setup_cpu$x86(r1, 0xffffffffffffffff, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x0, 0x0, 0xfffffffffffffe78) sendmmsg$unix(0xffffffffffffffff, &(0x7f0000002780)=[{0x0, 0x0, &(0x7f0000001d00)=[{&(0x7f0000000bc0)="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", 0x3c5}], 0x1}], 0x1, 0x0) ioctl$KVM_REGISTER_COALESCED_MMIO(r1, 0x4010ae67, &(0x7f00000000c0)={0x0, 0x15200}) syz_kvm_setup_cpu$x86(0xffffffffffffffff, r2, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x8, 0x0, 0x0) ioctl$KVM_RUN(r2, 0xae80, 0x14) 03:47:31 executing program 5: r0 = socket$inet(0x2, 0x4000000000000001, 0x0) setsockopt$inet_tcp_int(r0, 0x6, 0x80000000000002, &(0x7f0000000040)=0x74, 0x4) bind$inet(r0, &(0x7f0000000180)={0x2, 0x4e23, @multicast1}, 0x10) sendto$inet(r0, 0x0, 0x0, 0x200007fd, &(0x7f0000e68000)={0x2, 0x4e23, @local}, 0x10) write$binfmt_elf64(r0, &(0x7f00000012c0)=ANY=[@ANYBLOB="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"], 0x207) mmap(&(0x7f0000000000/0xb36000)=nil, 0xb36000, 0x3, 0x8031, 0xffffffffffffffff, 0x0) sendmmsg$inet_sctp(r0, &(0x7f0000002600)=[{0x0, 0x0, &(0x7f0000000240)=[{&(0x7f0000000380)="d4", 0x1}], 0x1, 0x0, 0x0, 0xf00}], 0x1, 0x0) 03:47:31 executing program 2: syz_mount_image$gfs2(&(0x7f0000000140)='gfs2\x00', &(0x7f0000000200)='./file0\x00', 0x0, 0x0, 0x0, 0x0, 0x0) r0 = creat(&(0x7f0000000000)='./file0\x00', 0x2) write$RDMA_USER_CM_CMD_CREATE_ID(0xffffffffffffffff, &(0x7f00000000c0)={0x0, 0x18, 0xfa00, {0x0, &(0x7f0000000080)={0xffffffffffffffff}, 0x111, 0x7}}, 0x20) write$RDMA_USER_CM_CMD_JOIN_MCAST(r0, &(0x7f0000000240)={0x16, 0x98, 0xfa00, {&(0x7f0000000040), 0x2, r1, 0x3c, 0x0, @in6={0xa, 0x4e24, 0x7fffffff, @loopback, 0x6}}}, 0xa0) socketpair$unix(0x1, 0x0, 0x0, 0x0) 03:47:31 executing program 4: syz_mount_image$gfs2(&(0x7f0000000140)='gfs2\x00', &(0x7f0000000200)='./file0\x00', 0x19000000, 0x0, 0x0, 0x0, &(0x7f00000003c0)={[{@locktable={'locktable', 0x3d, '/'}}, {@lockproto_nolock='lockproto=lock_nolock'}]}) socketpair$unix(0x1, 0x1, 0x0, &(0x7f0000000180)) 03:47:31 executing program 0: socketpair$unix(0x1, 0x1, 0x0, &(0x7f0000000440)={0xffffffffffffffff, 0xffffffffffffffff}) ioctl$PERF_EVENT_IOC_ENABLE(r0, 0x8912, 0x400200) r1 = openat$kvm(0xffffffffffffff9c, &(0x7f00000000c0)='/dev/kvm\x00', 0x0, 0x0) openat$dlm_monitor(0xffffffffffffff9c, &(0x7f0000000340)='/dev/dlm-monitor\x00', 0x0, 0x0) r2 = ioctl$KVM_CREATE_VM(r1, 0xae01, 0x0) r3 = ioctl$KVM_CREATE_VCPU(r2, 0xae41, 0x0) syz_kvm_setup_cpu$x86(r2, 0xffffffffffffffff, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x0, 0x0, 0x0) syz_kvm_setup_cpu$x86(0xffffffffffffffff, r3, &(0x7f0000000000/0x18000)=nil, &(0x7f00000001c0)=[@text64={0x40, &(0x7f0000000040)="b9800000c00f3235001000000f30f24c0f2c49e8426dc4027d3493b80800003626660f7e676d660f1678b06cc403f9dfbeb70000000bc7442400f5000000c744240284d178bcff1c24f2f347dbe1", 0x4e}], 0x1, 0x48, 0x0, 0x0) pipe2(&(0x7f0000000000), 0x0) ioctl$KVM_RUN(r3, 0xae80, 0xec0f0000000000) [ 1111.369122] gfs2: fsid=_: Trying to join cluster "lock_nolock", "_" [ 1111.400926] gfs2: fsid=_: Now mounting FS... [ 1111.451320] gfs2: not a GFS2 filesystem [ 1111.467128] gfs2: not a GFS2 filesystem [ 1111.478430] gfs2: fsid=_: can't read superblock [ 1111.504163] sysfs: cannot create duplicate filename '/fs/gfs2/_' [ 1111.525088] gfs2: fsid=_: can't read superblock: -22 [ 1111.562491] gfs2: not a GFS2 filesystem [ 1111.565821] CPU: 0 PID: 21339 Comm: syz-executor4 Not tainted 4.20.0-next-20190103 #4 [ 1111.574447] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 1111.583793] Call Trace: [ 1111.586386] dump_stack+0x1db/0x2d0 [ 1111.590034] ? dump_stack_print_info.cold+0x20/0x20 [ 1111.595075] ? _raw_spin_unlock_irqrestore+0xa4/0xe0 [ 1111.600201] sysfs_warn_dup.cold+0x1c/0x31 [ 1111.604435] sysfs_create_dir_ns+0x2ce/0x330 [ 1111.608850] ? sysfs_create_mount_point+0xa0/0xa0 [ 1111.613714] ? do_raw_spin_trylock+0x270/0x270 [ 1111.618308] kobject_add_internal.cold+0x129/0x6d8 [ 1111.623258] ? kobj_ns_type_registered+0x60/0x60 [ 1111.628012] ? kfree_const+0x59/0x70 [ 1111.631738] ? rcu_read_lock_sched_held+0x110/0x130 [ 1111.636756] ? kfree+0x1fa/0x230 [ 1111.640128] ? kfree_const+0x5e/0x70 [ 1111.643844] kobject_init_and_add+0x101/0x160 [ 1111.648343] ? kobject_add_internal+0x4b0/0x4b0 [ 1111.653016] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 1111.658570] ? vsnprintf+0x368/0x1b10 [ 1111.662385] gfs2_sys_fs_add+0x210/0x500 [ 1111.666447] ? recover_store+0x1a0/0x1a0 [ 1111.670518] ? snprintf+0xbb/0xf0 [ 1111.673976] ? vsprintf+0x30/0x40 [ 1111.677439] ? set_blocksize+0x2bf/0x340 [ 1111.681504] ? memcpy+0x46/0x50 [ 1111.684905] fill_super+0x894/0x1990 [ 1111.688646] ? gfs2_online_uevent+0x2d0/0x2d0 [ 1111.693154] ? snprintf+0xbb/0xf0 [ 1111.696609] ? vsprintf+0x40/0x40 [ 1111.700079] ? ns_capable_common+0x141/0x170 [ 1111.704489] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 1111.709527] ? set_blocksize+0x2bf/0x340 [ 1111.713592] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 1111.719138] gfs2_mount+0x5db/0x6ee [ 1111.722771] ? fill_super+0x1990/0x1990 [ 1111.726777] ? vfs_parse_fs_string+0x1c5/0x2b0 [ 1111.731392] ? vfs_parse_fs_param+0x4b0/0x4b0 [ 1111.735887] ? fill_super+0x1990/0x1990 [ 1111.739862] legacy_get_tree+0xf2/0x200 [ 1111.743861] vfs_get_tree+0x123/0x450 [ 1111.747670] do_mount+0x1622/0x2fa0 [ 1111.751315] ? copy_mount_string+0x40/0x40 [ 1111.755559] ? kmem_cache_alloc_trace+0x354/0x760 [ 1111.760430] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 1111.765963] ? _copy_from_user+0xdd/0x150 [ 1111.770114] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 1111.775656] ? copy_mount_options+0x30e/0x440 [ 1111.780163] ksys_mount+0xdb/0x150 [ 1111.783716] __x64_sys_mount+0xbe/0x150 [ 1111.787697] do_syscall_64+0x1a3/0x800 [ 1111.791586] ? syscall_return_slowpath+0x5f0/0x5f0 [ 1111.796526] ? prepare_exit_to_usermode+0x232/0x3b0 [ 1111.801552] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 1111.806428] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 1111.811616] RIP: 0033:0x45a93a [ 1111.814824] Code: b8 a6 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 ed 8c fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 0f 83 ca 8c fb ff c3 66 0f 1f 84 00 00 00 00 00 [ 1111.833726] RSP: 002b:00007ff699fe9a88 EFLAGS: 00000206 ORIG_RAX: 00000000000000a5 [ 1111.841435] RAX: ffffffffffffffda RBX: 00007ff699fe9b30 RCX: 000000000045a93a [ 1111.848707] RDX: 00007ff699fe9ad0 RSI: 0000000020000200 RDI: 00007ff699fe9af0 [ 1111.855990] RBP: 0000000020000200 R08: 00007ff699fe9b30 R09: 00007ff699fe9ad0 [ 1111.863256] R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000003 [ 1111.870521] R13: 0000000000000000 R14: 00000000004db380 R15: 00000000ffffffff [ 1111.957419] kobject_add_internal failed for _ with -EEXIST, don't try to register things with the same name in the same directory. 03:47:31 executing program 0: socketpair$unix(0x1, 0x1, 0x0, &(0x7f0000000440)={0xffffffffffffffff, 0xffffffffffffffff}) ioctl$PERF_EVENT_IOC_ENABLE(r0, 0x8912, 0x400200) r1 = openat$kvm(0xffffffffffffff9c, &(0x7f00000000c0)='/dev/kvm\x00', 0x0, 0x0) openat$dlm_monitor(0xffffffffffffff9c, &(0x7f0000000340)='/dev/dlm-monitor\x00', 0x0, 0x0) r2 = ioctl$KVM_CREATE_VM(r1, 0xae01, 0x0) r3 = ioctl$KVM_CREATE_VCPU(r2, 0xae41, 0x0) syz_kvm_setup_cpu$x86(r2, 0xffffffffffffffff, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x0, 0x0, 0x0) syz_kvm_setup_cpu$x86(0xffffffffffffffff, r3, &(0x7f0000000000/0x18000)=nil, &(0x7f00000001c0)=[@text64={0x40, &(0x7f0000000040)="b9800000c00f3235001000000f30f24c0f2c49e8426dc4027d3493b80800003626660f7e676d660f1678b06cc403f9dfbeb70000000bc7442400f5000000c744240284d178bcff1c24f2f347dbe1", 0x4e}], 0x1, 0x48, 0x0, 0x0) pipe2(&(0x7f0000000000), 0x0) ioctl$KVM_RUN(r3, 0xae80, 0x1000000) 03:47:31 executing program 2: syz_mount_image$gfs2(&(0x7f0000000000)='gfs2\x00', &(0x7f0000000200)='./file0\x00', 0x0, 0x0, 0x0, 0x0, 0x0) socketpair$unix(0x1, 0x0, 0x0, 0x0) r0 = syz_open_dev$vcsn(&(0x7f0000000040)='/dev/vcs#\x00', 0x24b6e073, 0x1) getsockopt$bt_BT_VOICE(r0, 0x112, 0xb, &(0x7f0000000080)=0x8a9, &(0x7f00000000c0)=0x2) [ 1112.092840] gfs2: fsid=_: error -17 adding sysfs files 03:47:31 executing program 1: r0 = openat$kvm(0xffffffffffffff9c, &(0x7f0000000140)='/dev/kvm\x00', 0x0, 0x0) r1 = ioctl$KVM_CREATE_VM(r0, 0xae01, 0x0) r2 = ioctl$KVM_CREATE_VCPU(r1, 0xae41, 0x0) ioctl$KVM_SET_USER_MEMORY_REGION(r1, 0x4020ae46, &(0x7f0000000400)={0x0, 0x3, 0x0, 0x2000, &(0x7f0000000000/0x2000)=nil}) syz_kvm_setup_cpu$x86(r1, 0xffffffffffffffff, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x0, 0x0, 0xfffffffffffffe78) sendmmsg$unix(0xffffffffffffffff, &(0x7f0000002780)=[{0x0, 0x0, &(0x7f0000001d00)=[{&(0x7f0000000bc0)="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", 0x3c5}], 0x1}], 0x1, 0x0) ioctl$KVM_REGISTER_COALESCED_MMIO(r1, 0x4010ae67, &(0x7f00000000c0)={0x0, 0x15200}) syz_kvm_setup_cpu$x86(0xffffffffffffffff, r2, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x8, 0x0, 0x0) ioctl$KVM_RUN(r2, 0xae80, 0x1b) [ 1112.285352] gfs2: not a GFS2 filesystem [ 1112.333734] gfs2: fsid=_: Trying to join cluster "lock_nolock", "_" 03:47:32 executing program 3: syz_mount_image$gfs2(&(0x7f0000000140)='gfs2\x00', &(0x7f0000000200)='./file0\x00', 0x0, 0x0, 0x0, 0x0, &(0x7f00000003c0)={[{@locktable={'locktable', 0x3d, '/'}}, {@lockproto_nolock='lockproto=lock_nolock'}]}) [ 1112.375876] gfs2: not a GFS2 filesystem [ 1112.398427] gfs2: fsid=_: Now mounting FS... 03:47:32 executing program 0: socketpair$unix(0x1, 0x1, 0x0, &(0x7f0000000440)={0xffffffffffffffff, 0xffffffffffffffff}) ioctl$PERF_EVENT_IOC_ENABLE(r0, 0x8912, 0x400200) r1 = openat$kvm(0xffffffffffffff9c, &(0x7f00000000c0)='/dev/kvm\x00', 0x0, 0x0) openat$dlm_monitor(0xffffffffffffff9c, &(0x7f0000000340)='/dev/dlm-monitor\x00', 0x0, 0x0) r2 = ioctl$KVM_CREATE_VM(r1, 0xae01, 0x0) r3 = ioctl$KVM_CREATE_VCPU(r2, 0xae41, 0x0) syz_kvm_setup_cpu$x86(r2, 0xffffffffffffffff, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x0, 0x0, 0x0) syz_kvm_setup_cpu$x86(0xffffffffffffffff, r3, &(0x7f0000000000/0x18000)=nil, &(0x7f00000001c0)=[@text64={0x40, &(0x7f0000000040)="b9800000c00f3235001000000f30f24c0f2c49e8426dc4027d3493b80800003626660f7e676d660f1678b06cc403f9dfbeb70000000bc7442400f5000000c744240284d178bcff1c24f2f347dbe1", 0x4e}], 0x1, 0x48, 0x0, 0x0) pipe2(&(0x7f0000000000), 0x0) ioctl$KVM_RUN(r3, 0xae80, 0xc00) [ 1112.432484] gfs2: not a GFS2 filesystem 03:47:32 executing program 2: r0 = openat$vga_arbiter(0xffffffffffffff9c, &(0x7f00000000c0)='/dev/vga_arbiter\x00', 0x4000, 0x0) r1 = socket$nl_generic(0x10, 0x3, 0x10) ioctl$sock_bt_cmtp_CMTPCONNADD(r0, 0x400443c8, &(0x7f0000000100)={r1, 0x8}) syz_mount_image$gfs2(&(0x7f0000000080)='gfs2\x00', &(0x7f0000000140)='./file0/file0\x00', 0xfffffffffffffffa, 0x27b, 0x0, 0x29003fc, 0x0) socketpair$unix(0x1, 0x0, 0x0, 0x0) [ 1112.469582] sysfs: cannot create duplicate filename '/fs/gfs2/_' [ 1112.496986] gfs2: fsid=_: can't read superblock [ 1112.517898] CPU: 1 PID: 21376 Comm: syz-executor3 Not tainted 4.20.0-next-20190103 #4 [ 1112.526412] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 1112.535772] Call Trace: [ 1112.535799] dump_stack+0x1db/0x2d0 [ 1112.535841] ? dump_stack_print_info.cold+0x20/0x20 [ 1112.540833] gfs2: fsid=_: can't read superblock: -22 [ 1112.542043] ? _raw_spin_unlock_irqrestore+0xa4/0xe0 [ 1112.542100] sysfs_warn_dup.cold+0x1c/0x31 [ 1112.542118] sysfs_create_dir_ns+0x2ce/0x330 [ 1112.557336] ? sysfs_create_mount_point+0xa0/0xa0 [ 1112.557354] ? do_raw_spin_trylock+0x270/0x270 [ 1112.557383] kobject_add_internal.cold+0x129/0x6d8 [ 1112.580374] ? kobj_ns_type_registered+0x60/0x60 [ 1112.585147] ? kfree_const+0x59/0x70 [ 1112.588877] ? rcu_read_lock_sched_held+0x110/0x130 [ 1112.593900] ? kfree+0x1fa/0x230 [ 1112.593919] ? kfree_const+0x5e/0x70 [ 1112.593940] kobject_init_and_add+0x101/0x160 [ 1112.605497] ? kobject_add_internal+0x4b0/0x4b0 [ 1112.610179] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 1112.615731] ? vsnprintf+0x368/0x1b10 [ 1112.619564] gfs2_sys_fs_add+0x210/0x500 [ 1112.623638] ? recover_store+0x1a0/0x1a0 [ 1112.627727] ? snprintf+0xbb/0xf0 [ 1112.631195] ? vsprintf+0x30/0x40 [ 1112.634657] ? set_blocksize+0x2bf/0x340 [ 1112.638732] ? memcpy+0x46/0x50 [ 1112.642033] fill_super+0x894/0x1990 [ 1112.645780] ? gfs2_online_uevent+0x2d0/0x2d0 [ 1112.650302] ? snprintf+0xbb/0xf0 [ 1112.653783] ? vsprintf+0x40/0x40 [ 1112.657250] ? ns_capable_common+0x141/0x170 [ 1112.662136] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 1112.667167] ? set_blocksize+0x2bf/0x340 [ 1112.671235] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 1112.676793] gfs2_mount+0x5db/0x6ee [ 1112.680427] ? fill_super+0x1990/0x1990 [ 1112.684434] ? vfs_parse_fs_string+0x1c5/0x2b0 [ 1112.689030] ? vfs_parse_fs_param+0x4b0/0x4b0 [ 1112.693559] ? fill_super+0x1990/0x1990 [ 1112.697536] legacy_get_tree+0xf2/0x200 [ 1112.701516] vfs_get_tree+0x123/0x450 [ 1112.705323] do_mount+0x1622/0x2fa0 [ 1112.708953] ? calibrate_delay.cold+0x47b/0x539 [ 1112.713629] ? copy_mount_string+0x40/0x40 [ 1112.717878] ? retint_kernel+0x2d/0x2d [ 1112.721777] ? copy_mount_options+0x244/0x440 [ 1112.726282] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 1112.731830] ? copy_mount_options+0x30e/0x440 [ 1112.736349] ksys_mount+0xdb/0x150 [ 1112.739899] __x64_sys_mount+0xbe/0x150 [ 1112.743876] do_syscall_64+0x1a3/0x800 [ 1112.747758] ? syscall_return_slowpath+0x5f0/0x5f0 [ 1112.752685] ? prepare_exit_to_usermode+0x232/0x3b0 [ 1112.757698] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 1112.762541] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 1112.767723] RIP: 0033:0x45a93a [ 1112.770926] Code: b8 a6 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 ed 8c fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 0f 83 ca 8c fb ff c3 66 0f 1f 84 00 00 00 00 00 [ 1112.789853] RSP: 002b:00007fdbfe5d2a88 EFLAGS: 00000206 ORIG_RAX: 00000000000000a5 [ 1112.797547] RAX: ffffffffffffffda RBX: 00007fdbfe5d2b30 RCX: 000000000045a93a [ 1112.804803] RDX: 00007fdbfe5d2ad0 RSI: 0000000020000200 RDI: 00007fdbfe5d2af0 [ 1112.812091] RBP: 0000000020000200 R08: 00007fdbfe5d2b30 R09: 00007fdbfe5d2ad0 [ 1112.819349] R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000003 [ 1112.826608] R13: 0000000000000000 R14: 00000000004db380 R15: 00000000ffffffff 03:47:32 executing program 2: syz_mount_image$gfs2(&(0x7f0000000140)='gfs2\x00', &(0x7f0000000200)='./file0\x00', 0x0, 0x0, 0x0, 0x0, 0x0) r0 = syz_open_dev$dmmidi(&(0x7f0000000000)='/dev/dmmidi#\x00', 0x1, 0x400000) getsockopt$inet_dccp_int(r0, 0x21, 0x6, &(0x7f00000000c0), &(0x7f0000000100)=0x4) setsockopt$EBT_SO_SET_COUNTERS(r0, 0x0, 0x81, &(0x7f0000000240)={'broute\x00', 0x0, 0x0, 0x0, [], 0x2, &(0x7f0000000040)=[{}, {}, {}, {}, {}, {}, {}, {}], 0x0, [{}, {}]}, 0x98) socketpair$unix(0x1, 0x0, 0x0, 0x0) 03:47:32 executing program 5: r0 = socket$inet(0x2, 0x4000000000000001, 0x0) setsockopt$inet_tcp_int(r0, 0x6, 0x80000000000002, &(0x7f0000000040)=0x74, 0x4) bind$inet(r0, &(0x7f0000000180)={0x2, 0x4e23, @multicast1}, 0x10) sendto$inet(r0, 0x0, 0x0, 0x200007fd, &(0x7f0000e68000)={0x2, 0x4e23, @local}, 0x10) write$binfmt_elf64(r0, &(0x7f00000012c0)=ANY=[@ANYBLOB="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"], 0x207) mmap(&(0x7f0000000000/0xb36000)=nil, 0xb36000, 0x3, 0x8031, 0xffffffffffffffff, 0x0) sendmmsg$inet_sctp(r0, &(0x7f0000002600)=[{0x0, 0x0, &(0x7f0000000240)=[{&(0x7f0000000380)="d4", 0x1}], 0x1, 0x0, 0x0, 0xf00}], 0x1, 0x0) 03:47:32 executing program 4: syz_mount_image$gfs2(&(0x7f0000000140)='gfs2\x00', &(0x7f0000000200)='./file0\x00', 0xd000000, 0x0, 0x0, 0x0, &(0x7f00000003c0)={[{@locktable={'locktable', 0x3d, '/'}}, {@lockproto_nolock='lockproto=lock_nolock'}]}) socketpair$unix(0x1, 0x1, 0x0, &(0x7f0000000180)) [ 1113.012169] gfs2: not a GFS2 filesystem [ 1113.024378] kobject_add_internal failed for _ with -EEXIST, don't try to register things with the same name in the same directory. 03:47:32 executing program 1: r0 = openat$kvm(0xffffffffffffff9c, &(0x7f0000000140)='/dev/kvm\x00', 0x0, 0x0) r1 = ioctl$KVM_CREATE_VM(r0, 0xae01, 0x0) r2 = ioctl$KVM_CREATE_VCPU(r1, 0xae41, 0x0) ioctl$KVM_SET_USER_MEMORY_REGION(r1, 0x4020ae46, &(0x7f0000000400)={0x0, 0x3, 0x0, 0x2000, &(0x7f0000000000/0x2000)=nil}) syz_kvm_setup_cpu$x86(r1, 0xffffffffffffffff, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x0, 0x0, 0xfffffffffffffe78) sendmmsg$unix(0xffffffffffffffff, &(0x7f0000002780)=[{0x0, 0x0, &(0x7f0000001d00)=[{&(0x7f0000000bc0)="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", 0x3c5}], 0x1}], 0x1, 0x0) ioctl$KVM_REGISTER_COALESCED_MMIO(r1, 0x4010ae67, &(0x7f00000000c0)={0x0, 0x15200}) syz_kvm_setup_cpu$x86(0xffffffffffffffff, r2, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x8, 0x0, 0x0) ioctl$KVM_RUN(r2, 0xae80, 0xd8100000) [ 1113.095900] gfs2: fsid=_: error -17 adding sysfs files 03:47:32 executing program 0: socketpair$unix(0x1, 0x1, 0x0, &(0x7f0000000440)={0xffffffffffffffff, 0xffffffffffffffff}) ioctl$PERF_EVENT_IOC_ENABLE(r0, 0x8912, 0x400200) r1 = openat$kvm(0xffffffffffffff9c, &(0x7f00000000c0)='/dev/kvm\x00', 0x0, 0x0) openat$dlm_monitor(0xffffffffffffff9c, &(0x7f0000000340)='/dev/dlm-monitor\x00', 0x0, 0x0) r2 = ioctl$KVM_CREATE_VM(r1, 0xae01, 0x0) r3 = ioctl$KVM_CREATE_VCPU(r2, 0xae41, 0x0) syz_kvm_setup_cpu$x86(r2, 0xffffffffffffffff, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x0, 0x0, 0x0) syz_kvm_setup_cpu$x86(0xffffffffffffffff, r3, &(0x7f0000000000/0x18000)=nil, &(0x7f00000001c0)=[@text64={0x40, &(0x7f0000000040)="b9800000c00f3235001000000f30f24c0f2c49e8426dc4027d3493b80800003626660f7e676d660f1678b06cc403f9dfbeb70000000bc7442400f5000000c744240284d178bcff1c24f2f347dbe1", 0x4e}], 0x1, 0x48, 0x0, 0x0) pipe2(&(0x7f0000000000), 0x0) ioctl$KVM_RUN(r3, 0xae80, 0x7f23a2fd0700) [ 1113.196122] gfs2: fsid=_: Trying to join cluster "lock_nolock", "_" [ 1113.219831] sysfs: cannot create duplicate filename '/fs/gfs2/_' 03:47:32 executing program 2: pipe2(&(0x7f0000000100)={0xffffffffffffffff, 0xffffffffffffffff}, 0x4800) ioctl$SG_NEXT_CMD_LEN(r1, 0x2283, &(0x7f0000000180)=0x1b) setsockopt$inet_int(r1, 0x0, 0x37, &(0x7f0000000080)=0x6794, 0x4) syz_mount_image$gfs2(&(0x7f0000000140)='gfs2\x00', &(0x7f0000000200)='./file0\x00', 0x0, 0x0, 0x0, 0x0, 0x0) socketpair$unix(0x1, 0x0, 0x0, 0x0) r2 = syz_open_dev$midi(&(0x7f0000000000)='/dev/midi#\x00', 0x6, 0x80400) accept4$unix(r2, &(0x7f0000000240)=@abs, &(0x7f00000000c0)=0x6e, 0x80802) ioctl$DRM_IOCTL_GET_STATS(r0, 0x80f86406, &(0x7f0000000040)=""/44) ioctl$SNDRV_TIMER_IOCTL_INFO(r2, 0x80e85411, &(0x7f00000002c0)=""/94) [ 1113.247830] gfs2: fsid=_: Now mounting FS... [ 1113.277421] gfs2: not a GFS2 filesystem [ 1113.299369] CPU: 0 PID: 21412 Comm: syz-executor4 Not tainted 4.20.0-next-20190103 #4 [ 1113.303419] gfs2: fsid=_: can't read superblock [ 1113.307347] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 1113.307353] Call Trace: [ 1113.307376] dump_stack+0x1db/0x2d0 [ 1113.307403] ? dump_stack_print_info.cold+0x20/0x20 [ 1113.320146] gfs2: fsid=_: can't read superblock: -22 [ 1113.321413] ? _raw_spin_unlock_irqrestore+0xa4/0xe0 [ 1113.321436] sysfs_warn_dup.cold+0x1c/0x31 [ 1113.321453] sysfs_create_dir_ns+0x2ce/0x330 [ 1113.321468] ? sysfs_create_mount_point+0xa0/0xa0 [ 1113.356292] ? do_raw_spin_trylock+0x270/0x270 [ 1113.360910] kobject_add_internal.cold+0x129/0x6d8 [ 1113.365848] ? kobj_ns_type_registered+0x60/0x60 [ 1113.370603] ? kfree_const+0x59/0x70 [ 1113.374320] ? rcu_read_lock_sched_held+0x110/0x130 [ 1113.379368] ? kfree+0x1fa/0x230 [ 1113.382789] ? kfree_const+0x5e/0x70 [ 1113.386534] kobject_init_and_add+0x101/0x160 [ 1113.391078] ? kobject_add_internal+0x4b0/0x4b0 [ 1113.395754] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 1113.401318] ? vsnprintf+0x368/0x1b10 [ 1113.401346] gfs2_sys_fs_add+0x210/0x500 [ 1113.401359] ? recover_store+0x1a0/0x1a0 [ 1113.401375] ? snprintf+0xbb/0xf0 [ 1113.413279] ? vsprintf+0x30/0x40 [ 1113.413297] ? set_blocksize+0x2bf/0x340 [ 1113.413323] ? memcpy+0x46/0x50 [ 1113.413344] fill_super+0x894/0x1990 [ 1113.413379] ? gfs2_online_uevent+0x2d0/0x2d0 [ 1113.424526] ? snprintf+0xbb/0xf0 [ 1113.424541] ? vsprintf+0x40/0x40 [ 1113.424563] ? ns_capable_common+0x141/0x170 [ 1113.424577] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 1113.424590] ? set_blocksize+0x2bf/0x340 [ 1113.424610] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 1113.436080] gfs2_mount+0x5db/0x6ee [ 1113.436098] ? fill_super+0x1990/0x1990 [ 1113.436138] ? vfs_parse_fs_string+0x1c5/0x2b0 [ 1113.447403] ? vfs_parse_fs_param+0x4b0/0x4b0 [ 1113.447419] ? fill_super+0x1990/0x1990 [ 1113.447434] legacy_get_tree+0xf2/0x200 [ 1113.447464] vfs_get_tree+0x123/0x450 [ 1113.447493] do_mount+0x1622/0x2fa0 [ 1113.456562] ? copy_mount_string+0x40/0x40 [ 1113.469667] ? kmem_cache_alloc_trace+0x354/0x760 [ 1113.503090] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 1113.508629] ? _copy_from_user+0xdd/0x150 [ 1113.512784] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 1113.518336] ? copy_mount_options+0x30e/0x440 [ 1113.522842] ksys_mount+0xdb/0x150 [ 1113.526389] __x64_sys_mount+0xbe/0x150 [ 1113.530374] do_syscall_64+0x1a3/0x800 [ 1113.534276] ? syscall_return_slowpath+0x5f0/0x5f0 [ 1113.539235] ? prepare_exit_to_usermode+0x232/0x3b0 [ 1113.544264] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 1113.549118] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 1113.554344] RIP: 0033:0x45a93a [ 1113.557543] Code: b8 a6 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 ed 8c fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 0f 83 ca 8c fb ff c3 66 0f 1f 84 00 00 00 00 00 [ 1113.576441] RSP: 002b:00007ff699fe9a88 EFLAGS: 00000206 ORIG_RAX: 00000000000000a5 [ 1113.584178] RAX: ffffffffffffffda RBX: 00007ff699fe9b30 RCX: 000000000045a93a [ 1113.591457] RDX: 00007ff699fe9ad0 RSI: 0000000020000200 RDI: 00007ff699fe9af0 [ 1113.598728] RBP: 0000000020000200 R08: 00007ff699fe9b30 R09: 00007ff699fe9ad0 [ 1113.605999] R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000003 [ 1113.613275] R13: 0000000000000000 R14: 00000000004db380 R15: 00000000ffffffff 03:47:33 executing program 5: r0 = socket$inet(0x2, 0x4000000000000001, 0x0) setsockopt$inet_tcp_int(r0, 0x6, 0x80000000000002, &(0x7f0000000040)=0x74, 0x4) bind$inet(r0, &(0x7f0000000180)={0x2, 0x4e23, @multicast1}, 0x10) sendto$inet(r0, 0x0, 0x0, 0x200007fd, &(0x7f0000e68000)={0x2, 0x4e23, @local}, 0x10) write$binfmt_elf64(r0, &(0x7f00000012c0)=ANY=[@ANYBLOB="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"], 0x208) mmap(&(0x7f0000000000/0xb36000)=nil, 0xb36000, 0x3, 0x8031, 0xffffffffffffffff, 0x0) sendmmsg$inet_sctp(r0, &(0x7f0000002600)=[{0x0, 0x0, &(0x7f0000000240)=[{&(0x7f0000000380)="d4", 0x1}], 0x1, 0x0, 0x0, 0xf00}], 0x1, 0x0) [ 1113.640669] kobject_add_internal failed for _ with -EEXIST, don't try to register things with the same name in the same directory. 03:47:33 executing program 3: syz_mount_image$gfs2(&(0x7f0000000140)='gfs2\x00', &(0x7f0000000200)='./file0\x00', 0x0, 0x0, 0x0, 0x0, &(0x7f00000003c0)={[{@locktable={'locktable', 0x3d, '/'}}, {@lockproto_nolock='lockproto=lock_nolock'}]}) [ 1113.710394] gfs2: fsid=_: error -17 adding sysfs files [ 1113.716918] gfs2: not a GFS2 filesystem 03:47:33 executing program 0: socketpair$unix(0x1, 0x1, 0x0, &(0x7f0000000440)={0xffffffffffffffff, 0xffffffffffffffff}) ioctl$PERF_EVENT_IOC_ENABLE(r0, 0x8912, 0x400200) r1 = openat$kvm(0xffffffffffffff9c, &(0x7f00000000c0)='/dev/kvm\x00', 0x0, 0x0) openat$dlm_monitor(0xffffffffffffff9c, &(0x7f0000000340)='/dev/dlm-monitor\x00', 0x0, 0x0) r2 = ioctl$KVM_CREATE_VM(r1, 0xae01, 0x0) r3 = ioctl$KVM_CREATE_VCPU(r2, 0xae41, 0x0) syz_kvm_setup_cpu$x86(r2, 0xffffffffffffffff, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x0, 0x0, 0x0) syz_kvm_setup_cpu$x86(0xffffffffffffffff, r3, &(0x7f0000000000/0x18000)=nil, &(0x7f00000001c0)=[@text64={0x40, &(0x7f0000000040)="b9800000c00f3235001000000f30f24c0f2c49e8426dc4027d3493b80800003626660f7e676d660f1678b06cc403f9dfbeb70000000bc7442400f5000000c744240284d178bcff1c24f2f347dbe1", 0x4e}], 0x1, 0x48, 0x0, 0x0) pipe2(&(0x7f0000000000), 0x0) ioctl$KVM_RUN(r3, 0xae80, 0xc000000) 03:47:33 executing program 1: r0 = openat$kvm(0xffffffffffffff9c, &(0x7f0000000140)='/dev/kvm\x00', 0x0, 0x0) r1 = ioctl$KVM_CREATE_VM(r0, 0xae01, 0x0) r2 = ioctl$KVM_CREATE_VCPU(r1, 0xae41, 0x0) ioctl$KVM_SET_USER_MEMORY_REGION(r1, 0x4020ae46, &(0x7f0000000400)={0x0, 0x3, 0x0, 0x2000, &(0x7f0000000000/0x2000)=nil}) syz_kvm_setup_cpu$x86(r1, 0xffffffffffffffff, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x0, 0x0, 0xfffffffffffffe78) sendmmsg$unix(0xffffffffffffffff, &(0x7f0000002780)=[{0x0, 0x0, &(0x7f0000001d00)=[{&(0x7f0000000bc0)="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", 0x3c5}], 0x1}], 0x1, 0x0) ioctl$KVM_REGISTER_COALESCED_MMIO(r1, 0x4010ae67, &(0x7f00000000c0)={0x0, 0x15200}) syz_kvm_setup_cpu$x86(0xffffffffffffffff, r2, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x8, 0x0, 0x0) ioctl$KVM_RUN(r2, 0xae80, 0x13) 03:47:33 executing program 2: r0 = syz_open_dev$dmmidi(&(0x7f0000000340)='/dev/dmmidi#\x00', 0x5, 0x4800) setsockopt$TIPC_IMPORTANCE(r0, 0x10f, 0x7f, &(0x7f0000000380)=0x3, 0x4) syz_mount_image$gfs2(&(0x7f0000000140)='gfs2\x00', &(0x7f0000000200)='./file0\x00', 0x0, 0x0, 0x0, 0x0, 0x0) socketpair$unix(0x1, 0x0, 0x0, 0x0) [ 1113.903349] gfs2: fsid=_: Trying to join cluster "lock_nolock", "_" [ 1113.911819] gfs2: fsid=_: Now mounting FS... [ 1113.923396] sysfs: cannot create duplicate filename '/fs/gfs2/_' [ 1113.935743] gfs2: not a GFS2 filesystem [ 1113.964409] gfs2: fsid=_: can't read superblock [ 1113.988199] gfs2: not a GFS2 filesystem [ 1114.014672] gfs2: fsid=_: can't read superblock: -22 [ 1114.075546] gfs2: not a GFS2 filesystem 03:47:33 executing program 0: socketpair$unix(0x1, 0x1, 0x0, &(0x7f0000000440)={0xffffffffffffffff, 0xffffffffffffffff}) ioctl$PERF_EVENT_IOC_ENABLE(r0, 0x8912, 0x400200) r1 = openat$kvm(0xffffffffffffff9c, &(0x7f00000000c0)='/dev/kvm\x00', 0x0, 0x0) openat$dlm_monitor(0xffffffffffffff9c, &(0x7f0000000340)='/dev/dlm-monitor\x00', 0x0, 0x0) r2 = ioctl$KVM_CREATE_VM(r1, 0xae01, 0x0) r3 = ioctl$KVM_CREATE_VCPU(r2, 0xae41, 0x0) syz_kvm_setup_cpu$x86(r2, 0xffffffffffffffff, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x0, 0x0, 0x0) syz_kvm_setup_cpu$x86(0xffffffffffffffff, r3, &(0x7f0000000000/0x18000)=nil, &(0x7f00000001c0)=[@text64={0x40, &(0x7f0000000040)="b9800000c00f3235001000000f30f24c0f2c49e8426dc4027d3493b80800003626660f7e676d660f1678b06cc403f9dfbeb70000000bc7442400f5000000c744240284d178bcff1c24f2f347dbe1", 0x4e}], 0x1, 0x48, 0x0, 0x0) pipe2(&(0x7f0000000000), 0x0) ioctl$KVM_RUN(r3, 0xae80, 0x4000000000000000) 03:47:33 executing program 1: r0 = openat$kvm(0xffffffffffffff9c, &(0x7f0000000140)='/dev/kvm\x00', 0x0, 0x0) r1 = ioctl$KVM_CREATE_VM(r0, 0xae01, 0x0) r2 = ioctl$KVM_CREATE_VCPU(r1, 0xae41, 0x0) ioctl$KVM_SET_USER_MEMORY_REGION(r1, 0x4020ae46, &(0x7f0000000400)={0x0, 0x3, 0x0, 0x2000, &(0x7f0000000000/0x2000)=nil}) syz_kvm_setup_cpu$x86(r1, 0xffffffffffffffff, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x0, 0x0, 0xfffffffffffffe78) sendmmsg$unix(0xffffffffffffffff, &(0x7f0000002780)=[{0x0, 0x0, &(0x7f0000001d00)=[{&(0x7f0000000bc0)="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", 0x3c5}], 0x1}], 0x1, 0x0) ioctl$KVM_REGISTER_COALESCED_MMIO(r1, 0x4010ae67, &(0x7f00000000c0)={0x0, 0x15200}) syz_kvm_setup_cpu$x86(0xffffffffffffffff, r2, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x8, 0x0, 0x0) ioctl$KVM_RUN(r2, 0xae80, 0xffffffffa0008000) [ 1114.208903] CPU: 0 PID: 21412 Comm: syz-executor4 Not tainted 4.20.0-next-20190103 #4 [ 1114.216919] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 1114.216925] Call Trace: [ 1114.216959] dump_stack+0x1db/0x2d0 [ 1114.216993] ? dump_stack_print_info.cold+0x20/0x20 [ 1114.217015] ? _raw_spin_unlock_irqrestore+0xa4/0xe0 [ 1114.237559] sysfs_warn_dup.cold+0x1c/0x31 [ 1114.237600] sysfs_create_dir_ns+0x2ce/0x330 [ 1114.237633] ? sysfs_create_mount_point+0xa0/0xa0 [ 1114.256188] ? do_raw_spin_trylock+0x270/0x270 [ 1114.260826] kobject_add_internal.cold+0x129/0x6d8 [ 1114.265767] ? kobj_ns_type_registered+0x60/0x60 [ 1114.270522] ? kfree_const+0x59/0x70 [ 1114.274257] ? rcu_read_lock_sched_held+0x110/0x130 [ 1114.279294] ? kfree+0x1fa/0x230 [ 1114.282689] ? kfree_const+0x5e/0x70 [ 1114.286429] kobject_init_and_add+0x101/0x160 [ 1114.290932] ? kobject_add_internal+0x4b0/0x4b0 [ 1114.295641] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 1114.301182] ? vsnprintf+0x368/0x1b10 [ 1114.304995] gfs2_sys_fs_add+0x210/0x500 [ 1114.309084] ? recover_store+0x1a0/0x1a0 [ 1114.313151] ? snprintf+0xbb/0xf0 [ 1114.316648] ? vsprintf+0x30/0x40 [ 1114.320105] ? set_blocksize+0x2bf/0x340 [ 1114.324180] ? memcpy+0x46/0x50 [ 1114.327476] fill_super+0x894/0x1990 [ 1114.331207] ? gfs2_online_uevent+0x2d0/0x2d0 [ 1114.335811] ? snprintf+0xbb/0xf0 [ 1114.339274] ? vsprintf+0x40/0x40 [ 1114.342736] ? ns_capable_common+0x141/0x170 [ 1114.347151] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 1114.352171] ? set_blocksize+0x2bf/0x340 03:47:34 executing program 5: r0 = socket$inet(0x2, 0x4000000000000001, 0x0) setsockopt$inet_tcp_int(r0, 0x6, 0x80000000000002, &(0x7f0000000040)=0x74, 0x4) bind$inet(r0, &(0x7f0000000180)={0x2, 0x4e23, @multicast1}, 0x10) sendto$inet(r0, 0x0, 0x0, 0x200007fd, &(0x7f0000e68000)={0x2, 0x4e23, @local}, 0x10) write$binfmt_elf64(r0, &(0x7f00000012c0)=ANY=[@ANYBLOB="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"], 0x208) mmap(&(0x7f0000000000/0xb36000)=nil, 0xb36000, 0x3, 0x8031, 0xffffffffffffffff, 0x0) sendmmsg$inet_sctp(r0, &(0x7f0000002600)=[{0x0, 0x0, &(0x7f0000000240)=[{&(0x7f0000000380)="d4", 0x1}], 0x1, 0x0, 0x0, 0xf00}], 0x1, 0x0) [ 1114.356254] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 1114.361801] gfs2_mount+0x5db/0x6ee [ 1114.365454] ? fill_super+0x1990/0x1990 [ 1114.369474] ? vfs_parse_fs_string+0x1c5/0x2b0 [ 1114.374108] ? vfs_parse_fs_param+0x4b0/0x4b0 [ 1114.378619] ? fill_super+0x1990/0x1990 [ 1114.382606] legacy_get_tree+0xf2/0x200 [ 1114.382629] vfs_get_tree+0x123/0x450 [ 1114.382649] do_mount+0x1622/0x2fa0 [ 1114.382672] ? copy_mount_string+0x40/0x40 [ 1114.390432] ? kmem_cache_alloc_trace+0x354/0x760 [ 1114.403107] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 1114.408649] ? _copy_from_user+0xdd/0x150 [ 1114.412809] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 1114.418551] ? copy_mount_options+0x30e/0x440 [ 1114.423083] ksys_mount+0xdb/0x150 [ 1114.426643] __x64_sys_mount+0xbe/0x150 [ 1114.430635] do_syscall_64+0x1a3/0x800 [ 1114.434535] ? syscall_return_slowpath+0x5f0/0x5f0 [ 1114.439474] ? prepare_exit_to_usermode+0x232/0x3b0 [ 1114.444527] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 1114.449412] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 1114.454606] RIP: 0033:0x45a93a [ 1114.457808] Code: b8 a6 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 ed 8c fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 0f 83 ca 8c fb ff c3 66 0f 1f 84 00 00 00 00 00 [ 1114.476725] RSP: 002b:00007ff699fe9a88 EFLAGS: 00000206 ORIG_RAX: 00000000000000a5 [ 1114.484454] RAX: ffffffffffffffda RBX: 00007ff699fe9b30 RCX: 000000000045a93a [ 1114.491755] RDX: 00007ff699fe9ad0 RSI: 0000000020000200 RDI: 00007ff699fe9af0 [ 1114.499038] RBP: 0000000020000200 R08: 00007ff699fe9b30 R09: 00007ff699fe9ad0 [ 1114.506353] R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000003 [ 1114.513647] R13: 0000000000000000 R14: 00000000004db380 R15: 00000000ffffffff [ 1114.526216] kobject_add_internal failed for _ with -EEXIST, don't try to register things with the same name in the same directory. [ 1114.597150] gfs2: fsid=_: error -17 adding sysfs files [ 1114.618278] gfs2: fsid=_: Trying to join cluster "lock_nolock", "_" [ 1114.667298] gfs2: fsid=_: Now mounting FS... [ 1114.693020] gfs2: not a GFS2 filesystem [ 1114.722857] gfs2: fsid=_: can't read superblock [ 1114.733967] gfs2: fsid=_: can't read superblock: -22 03:47:34 executing program 4: syz_mount_image$gfs2(&(0x7f0000000140)='gfs2\x00', &(0x7f0000000200)='./file0\x00', 0x1400, 0x0, 0x0, 0x0, &(0x7f00000003c0)={[{@locktable={'locktable', 0x3d, '/'}}, {@lockproto_nolock='lockproto=lock_nolock'}]}) socketpair$unix(0x1, 0x1, 0x0, &(0x7f0000000180)) 03:47:34 executing program 2: syz_mount_image$gfs2(&(0x7f0000000040)='gfs2\x00', &(0x7f0000000200)='./file0\x00', 0x0, 0x0, 0x0, 0x2, 0x0) socketpair$unix(0x1, 0x1, 0x0, &(0x7f0000000000)) socketpair$unix(0x1, 0x5, 0x0, 0x0) 03:47:34 executing program 0: socketpair$unix(0x1, 0x1, 0x0, &(0x7f0000000440)={0xffffffffffffffff, 0xffffffffffffffff}) ioctl$PERF_EVENT_IOC_ENABLE(r0, 0x8912, 0x400200) r1 = openat$kvm(0xffffffffffffff9c, &(0x7f00000000c0)='/dev/kvm\x00', 0x0, 0x0) openat$dlm_monitor(0xffffffffffffff9c, &(0x7f0000000340)='/dev/dlm-monitor\x00', 0x0, 0x0) r2 = ioctl$KVM_CREATE_VM(r1, 0xae01, 0x0) r3 = ioctl$KVM_CREATE_VCPU(r2, 0xae41, 0x0) syz_kvm_setup_cpu$x86(r2, 0xffffffffffffffff, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x0, 0x0, 0x0) syz_kvm_setup_cpu$x86(0xffffffffffffffff, r3, &(0x7f0000000000/0x18000)=nil, &(0x7f00000001c0)=[@text64={0x40, &(0x7f0000000040)="b9800000c00f3235001000000f30f24c0f2c49e8426dc4027d3493b80800003626660f7e676d660f1678b06cc403f9dfbeb70000000bc7442400f5000000c744240284d178bcff1c24f2f347dbe1", 0x4e}], 0x1, 0x48, 0x0, 0x0) pipe2(&(0x7f0000000000), 0x0) ioctl$KVM_RUN(r3, 0xae80, 0xc00000000000000) 03:47:34 executing program 1: r0 = openat$kvm(0xffffffffffffff9c, &(0x7f0000000140)='/dev/kvm\x00', 0x0, 0x0) r1 = ioctl$KVM_CREATE_VM(r0, 0xae01, 0x0) r2 = ioctl$KVM_CREATE_VCPU(r1, 0xae41, 0x0) ioctl$KVM_SET_USER_MEMORY_REGION(r1, 0x4020ae46, &(0x7f0000000400)={0x0, 0x3, 0x0, 0x2000, &(0x7f0000000000/0x2000)=nil}) syz_kvm_setup_cpu$x86(r1, 0xffffffffffffffff, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x0, 0x0, 0xfffffffffffffe78) sendmmsg$unix(0xffffffffffffffff, &(0x7f0000002780)=[{0x0, 0x0, &(0x7f0000001d00)=[{&(0x7f0000000bc0)="b474ac0450ac6a2ff5ba4c1a19990e818d6fb646a5739e09c636550fdd39d0316e215a5a9427ac426da0b375844fb7f5ee5130d0b57cdab9af6f5f0d39c1787ec9ecde6263664c6a9859b7a0c4cbc99a05184da950f370cf65a18bff7975c0c12ca4227baa2164d031a5472d7f581c6f7eedd103d8fc89b6b4b52e5d3da0817eec8c57f722e356068b99a056ab6a693b9eebe38d75170491e07f9f69573b02b1a048f29e39cd24fed99e8606ffcbe4f617f48370ec62bd327cdfb9da8e8fef232b2e8f8f6868bb1781eab4c294befd65d9a336123bd34be8f256b5fc0420aa6e930f292a9a06365daaebd0bcaaaf5e0c12167aad0c62a48666383ee58b37df8077c5d2d5298d5247e240a78ff2543147129775f6d4a872df80d9da66c2a0a169df65141cbe88b1e280d60f6e11b25a0b5bb1bdd430378761d547f3ff7e42cc84c849e66004e30905d908e352a53f95bca84a68a6ce5ee82b69c939a196a7060bee28d8dee1ed52ae04b228bedf9302df44cc957780e42c2784d18e3695ee5e73dbe385331494af3cbcf8952e85469e9566c32692c0ceae8dab7b9553b5e8aa66edbad2ed828ba2a665a48a2822d9dc538863aea705c926c5a12fee84db545a36a13281e09e82c06211cc195cb4409bedfb7cf22f6c01fba9720bc4f447da73bb95bab6c056ce51bbc9d5b6622c54152e853f9639d2db2a5992e0f0e8f77a2e5efcfd139869cbdc902622399035d6ab8c22e33605be6850356be97ac05588720e1e215fbf5cb6633f0894e0a4dbd28708cac77792a31b00f47d18cebcb9114f1b0ffd66b587c5f9ba086fc530c6a0ac561068de208f18a3b6adc47f04bd63bd4a31544eb953398ddee5b5e4533aa529947aa46e7e517ff719e559c106f8afc570019f272a9f2d2699c7384612854de44dc40bb33aafee4e5fab1c06ceeffec56782452589f80c3946e6631c591e7f82af7e3a6422e0f35b0847f0a3049ee29b09f8aadf59c96a99576be85d6ddcf8c4d82373355add27397517402a56fd36bf877a53731413c30786431262705fb01511a778482cd85b60323b683e0e9d2f06b57678ddcf06f6da03f818e7f0b4db7045527f6e00fa26fe586fe0fcc72024fad6bab1739f6d7980d21f1fac0e7f53ee4cb254349b93a89f5695be91e5c586411b18f3f11298d979abdf4dd4796b181e623189aa73182c4c5ff346545168a520241ce23e08ade26085f654537258efaacfe1a64b2261c5180eb7c01ca6f4dc0f08f98ec12c06036278eff4c8d3b852bb2022be745861268ffbe0bb37c45452d2ac97aa6cb81db9f428688e6eab0e85ba6eb2eaecf4e8e137a2101f04b201258a71d857194610", 0x3c5}], 0x1}], 0x1, 0x0) ioctl$KVM_REGISTER_COALESCED_MMIO(r1, 0x4010ae67, &(0x7f00000000c0)={0x0, 0x15200}) syz_kvm_setup_cpu$x86(0xffffffffffffffff, r2, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x8, 0x0, 0x0) ioctl$KVM_RUN(r2, 0xae80, 0x800f) [ 1114.970941] gfs2: not a GFS2 filesystem 03:47:34 executing program 3: syz_mount_image$gfs2(&(0x7f0000000140)='gfs2\x00', &(0x7f0000000200)='./file0\x00', 0x0, 0x0, 0x0, 0x0, &(0x7f00000003c0)={[{@locktable={'locktable', 0x3d, '/'}}, {@lockproto_nolock='lockproto=lock_nolock'}]}) 03:47:34 executing program 5: r0 = socket$inet(0x2, 0x4000000000000001, 0x0) setsockopt$inet_tcp_int(r0, 0x6, 0x80000000000002, &(0x7f0000000040)=0x74, 0x4) bind$inet(r0, &(0x7f0000000180)={0x2, 0x4e23, @multicast1}, 0x10) sendto$inet(r0, 0x0, 0x0, 0x200007fd, &(0x7f0000e68000)={0x2, 0x4e23, @local}, 0x10) write$binfmt_elf64(r0, &(0x7f00000012c0)=ANY=[@ANYBLOB="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"], 0x208) mmap(&(0x7f0000000000/0xb36000)=nil, 0xb36000, 0x3, 0x8031, 0xffffffffffffffff, 0x0) sendmmsg$inet_sctp(r0, &(0x7f0000002600)=[{0x0, 0x0, &(0x7f0000000240)=[{&(0x7f0000000380)="d4", 0x1}], 0x1, 0x0, 0x0, 0xf00}], 0x1, 0x0) [ 1115.088591] gfs2: fsid=_: Trying to join cluster "lock_nolock", "_" [ 1115.183585] gfs2: fsid=_: Now mounting FS... [ 1115.207778] sysfs: cannot create duplicate filename '/fs/gfs2/_' [ 1115.230186] CPU: 1 PID: 21511 Comm: syz-executor3 Not tainted 4.20.0-next-20190103 #4 [ 1115.238185] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 1115.238193] Call Trace: [ 1115.238219] dump_stack+0x1db/0x2d0 [ 1115.238245] ? dump_stack_print_info.cold+0x20/0x20 [ 1115.238269] ? _raw_spin_unlock_irqrestore+0xa4/0xe0 [ 1115.238297] sysfs_warn_dup.cold+0x1c/0x31 [ 1115.238318] sysfs_create_dir_ns+0x2ce/0x330 [ 1115.238340] ? sysfs_create_mount_point+0xa0/0xa0 [ 1115.238358] ? do_raw_spin_trylock+0x270/0x270 [ 1115.238393] kobject_add_internal.cold+0x129/0x6d8 [ 1115.238423] ? kobj_ns_type_registered+0x60/0x60 [ 1115.261815] attempt to access beyond end of device [ 1115.264099] ? kfree_const+0x59/0x70 [ 1115.264116] ? rcu_read_lock_sched_held+0x110/0x130 [ 1115.264131] ? kfree+0x1fa/0x230 [ 1115.264149] ? kfree_const+0x5e/0x70 [ 1115.264170] kobject_init_and_add+0x101/0x160 [ 1115.264188] ? kobject_add_internal+0x4b0/0x4b0 [ 1115.282756] loop4: rw=4096, want=136, limit=10 [ 1115.287154] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 1115.287171] ? vsnprintf+0x368/0x1b10 [ 1115.287210] gfs2_sys_fs_add+0x210/0x500 [ 1115.298377] gfs2: error 10 reading superblock [ 1115.300570] ? recover_store+0x1a0/0x1a0 [ 1115.308939] ? snprintf+0xbb/0xf0 [ 1115.308954] ? vsprintf+0x30/0x40 [ 1115.308971] ? set_blocksize+0x2bf/0x340 [ 1115.318859] gfs2: fsid=_: can't read superblock [ 1115.321855] ? memcpy+0x46/0x50 [ 1115.321881] fill_super+0x894/0x1990 [ 1115.368538] gfs2: fsid=_: can't read superblock: -5 [ 1115.370947] ? gfs2_online_uevent+0x2d0/0x2d0 [ 1115.370969] ? snprintf+0xbb/0xf0 [ 1115.383907] ? vsprintf+0x40/0x40 [ 1115.387388] ? ns_capable_common+0x141/0x170 [ 1115.391794] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 1115.396808] ? set_blocksize+0x2bf/0x340 [ 1115.400877] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 1115.406421] gfs2_mount+0x5db/0x6ee [ 1115.410065] ? fill_super+0x1990/0x1990 [ 1115.414080] ? vfs_parse_fs_string+0x1c5/0x2b0 [ 1115.418834] ? vfs_parse_fs_param+0x4b0/0x4b0 [ 1115.423338] ? fill_super+0x1990/0x1990 [ 1115.427319] legacy_get_tree+0xf2/0x200 [ 1115.431304] vfs_get_tree+0x123/0x450 [ 1115.435115] do_mount+0x1622/0x2fa0 [ 1115.438752] ? copy_mount_string+0x40/0x40 [ 1115.442992] ? kmem_cache_alloc_trace+0x354/0x760 [ 1115.447836] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 1115.453371] ? _copy_from_user+0xdd/0x150 [ 1115.457524] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 1115.463073] ? copy_mount_options+0x30e/0x440 [ 1115.467577] ksys_mount+0xdb/0x150 [ 1115.471132] __x64_sys_mount+0xbe/0x150 [ 1115.475114] do_syscall_64+0x1a3/0x800 [ 1115.479004] ? syscall_return_slowpath+0x5f0/0x5f0 [ 1115.483934] ? prepare_exit_to_usermode+0x232/0x3b0 [ 1115.488953] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 1115.493803] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 1115.498993] RIP: 0033:0x45a93a [ 1115.502185] Code: b8 a6 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 ed 8c fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 0f 83 ca 8c fb ff c3 66 0f 1f 84 00 00 00 00 00 [ 1115.521086] RSP: 002b:00007fdbfe5d2a88 EFLAGS: 00000206 ORIG_RAX: 00000000000000a5 [ 1115.529259] RAX: ffffffffffffffda RBX: 00007fdbfe5d2b30 RCX: 000000000045a93a [ 1115.536526] RDX: 00007fdbfe5d2ad0 RSI: 0000000020000200 RDI: 00007fdbfe5d2af0 [ 1115.543793] RBP: 0000000020000200 R08: 00007fdbfe5d2b30 R09: 00007fdbfe5d2ad0 [ 1115.551070] R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000003 03:47:35 executing program 2: syz_mount_image$gfs2(&(0x7f0000000140)='gfs2\x00', &(0x7f0000000200)='./file0\x00', 0x0, 0x0, 0x0, 0x0, 0x0) socketpair$unix(0x1, 0x0, 0x0, 0x0) r0 = openat$hwrng(0xffffffffffffff9c, &(0x7f0000000000)='/dev/hwrng\x00', 0x200, 0x0) setsockopt$IPT_SO_SET_ADD_COUNTERS(r0, 0x0, 0x41, &(0x7f0000000040)={'nat\x00', 0x5, [{}, {}, {}, {}, {}]}, 0x78) 03:47:35 executing program 1: r0 = openat$kvm(0xffffffffffffff9c, &(0x7f0000000140)='/dev/kvm\x00', 0x0, 0x0) r1 = ioctl$KVM_CREATE_VM(r0, 0xae01, 0x0) r2 = ioctl$KVM_CREATE_VCPU(r1, 0xae41, 0x0) ioctl$KVM_SET_USER_MEMORY_REGION(r1, 0x4020ae46, &(0x7f0000000400)={0x0, 0x3, 0x0, 0x2000, &(0x7f0000000000/0x2000)=nil}) syz_kvm_setup_cpu$x86(r1, 0xffffffffffffffff, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x0, 0x0, 0xfffffffffffffe78) sendmmsg$unix(0xffffffffffffffff, &(0x7f0000002780)=[{0x0, 0x0, &(0x7f0000001d00)=[{&(0x7f0000000bc0)="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", 0x3c5}], 0x1}], 0x1, 0x0) ioctl$KVM_REGISTER_COALESCED_MMIO(r1, 0x4010ae67, &(0x7f00000000c0)={0x0, 0x15200}) syz_kvm_setup_cpu$x86(0xffffffffffffffff, r2, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x8, 0x0, 0x0) ioctl$KVM_RUN(r2, 0xae80, 0xa00000000000000) [ 1115.558335] R13: 0000000000000000 R14: 00000000004db380 R15: 00000000ffffffff [ 1115.580044] kobject_add_internal failed for _ with -EEXIST, don't try to register things with the same name in the same directory. [ 1115.594063] gfs2: fsid=_: error -17 adding sysfs files 03:47:35 executing program 0: socketpair$unix(0x1, 0x1, 0x0, &(0x7f0000000440)={0xffffffffffffffff, 0xffffffffffffffff}) ioctl$PERF_EVENT_IOC_ENABLE(r0, 0x8912, 0x400200) r1 = openat$kvm(0xffffffffffffff9c, &(0x7f00000000c0)='/dev/kvm\x00', 0x0, 0x0) openat$dlm_monitor(0xffffffffffffff9c, &(0x7f0000000340)='/dev/dlm-monitor\x00', 0x0, 0x0) r2 = ioctl$KVM_CREATE_VM(r1, 0xae01, 0x0) r3 = ioctl$KVM_CREATE_VCPU(r2, 0xae41, 0x0) syz_kvm_setup_cpu$x86(r2, 0xffffffffffffffff, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x0, 0x0, 0x0) syz_kvm_setup_cpu$x86(0xffffffffffffffff, r3, &(0x7f0000000000/0x18000)=nil, &(0x7f00000001c0)=[@text64={0x40, &(0x7f0000000040)="b9800000c00f3235001000000f30f24c0f2c49e8426dc4027d3493b80800003626660f7e676d660f1678b06cc403f9dfbeb70000000bc7442400f5000000c744240284d178bcff1c24f2f347dbe1", 0x4e}], 0x1, 0x48, 0x0, 0x0) pipe2(&(0x7f0000000000), 0x0) ioctl$KVM_RUN(r3, 0xae80, 0xec0f00) 03:47:35 executing program 3: syz_mount_image$gfs2(&(0x7f0000000140)='gfs2\xba', &(0x7f0000000200)='./file0\x00', 0x0, 0x0, 0x0, 0x0, &(0x7f00000003c0)={[{@locktable={'locktable', 0x3d, '/'}}, {@lockproto_nolock='lockproto=lock_nolock'}]}) 03:47:35 executing program 4: syz_mount_image$gfs2(&(0x7f0000000140)='gfs2\x00', &(0x7f0000000200)='./file0\x00', 0x48, 0x0, 0x0, 0x0, &(0x7f00000003c0)={[{@locktable={'locktable', 0x3d, '/'}}, {@lockproto_nolock='lockproto=lock_nolock'}]}) socketpair$unix(0x1, 0x1, 0x0, &(0x7f0000000180)) [ 1115.863574] gfs2: not a GFS2 filesystem 03:47:35 executing program 1: r0 = openat$kvm(0xffffffffffffff9c, &(0x7f0000000140)='/dev/kvm\x00', 0x0, 0x0) r1 = ioctl$KVM_CREATE_VM(r0, 0xae01, 0x0) r2 = ioctl$KVM_CREATE_VCPU(r1, 0xae41, 0x0) ioctl$KVM_SET_USER_MEMORY_REGION(r1, 0x4020ae46, &(0x7f0000000400)={0x0, 0x3, 0x0, 0x2000, &(0x7f0000000000/0x2000)=nil}) syz_kvm_setup_cpu$x86(r1, 0xffffffffffffffff, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x0, 0x0, 0xfffffffffffffe78) sendmmsg$unix(0xffffffffffffffff, &(0x7f0000002780)=[{0x0, 0x0, &(0x7f0000001d00)=[{&(0x7f0000000bc0)="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", 0x3c5}], 0x1}], 0x1, 0x0) ioctl$KVM_REGISTER_COALESCED_MMIO(r1, 0x4010ae67, &(0x7f00000000c0)={0x0, 0x15200}) syz_kvm_setup_cpu$x86(0xffffffffffffffff, r2, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x8, 0x0, 0x0) ioctl$KVM_RUN(r2, 0xae80, 0x3000000) [ 1115.916013] gfs2: not a GFS2 filesystem [ 1116.016939] gfs2: fsid=_: Trying to join cluster "lock_nolock", "_" 03:47:35 executing program 2: syz_mount_image$gfs2(&(0x7f0000000140)='gfs2\x00', &(0x7f0000000040)='./file0\x00', 0xffffffffffffffff, 0x0, 0x0, 0x0, 0x0) r0 = openat$proc_capi20(0xffffffffffffff9c, &(0x7f0000000000)='/proc/capi/capi20\x00', 0x105081, 0x0) socket$inet_udp(0x2, 0x2, 0x0) ioctl$LOOP_SET_BLOCK_SIZE(r0, 0x4c09, 0x1ff) socketpair$unix(0x1, 0x1, 0x0, 0x0) mount$9p_rdma(&(0x7f0000000080)='127.0.0.1\x00', &(0x7f00000000c0)='./file0\x00', &(0x7f0000000100)='9p\x00', 0x40, &(0x7f0000000180)={'trans=rdma,', {'port', 0x3d, 0x4e23}, 0x2c, {[{@rq={'rq', 0x3d, 0x6}}, {@timeout={'timeout', 0x3d, 0x450}}, {@sq={'sq', 0x3d, 0x14}}], [{@obj_role={'obj_role', 0x3d, 'gfs2\x00'}}, {@context={'context', 0x3d, 'root'}}]}}) [ 1116.078375] gfs2: fsid=_: Now mounting FS... [ 1116.115484] gfs2: not a GFS2 filesystem [ 1116.137144] gfs2: fsid=_: can't read superblock [ 1116.156481] gfs2: fsid=_: can't read superblock: -22 03:47:35 executing program 0: socketpair$unix(0x1, 0x1, 0x0, &(0x7f0000000440)={0xffffffffffffffff, 0xffffffffffffffff}) ioctl$PERF_EVENT_IOC_ENABLE(r0, 0x8912, 0x400200) r1 = openat$kvm(0xffffffffffffff9c, &(0x7f00000000c0)='/dev/kvm\x00', 0x0, 0x0) openat$dlm_monitor(0xffffffffffffff9c, &(0x7f0000000340)='/dev/dlm-monitor\x00', 0x0, 0x0) r2 = ioctl$KVM_CREATE_VM(r1, 0xae01, 0x0) r3 = ioctl$KVM_CREATE_VCPU(r2, 0xae41, 0x0) syz_kvm_setup_cpu$x86(r2, 0xffffffffffffffff, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x0, 0x0, 0x0) syz_kvm_setup_cpu$x86(0xffffffffffffffff, r3, &(0x7f0000000000/0x18000)=nil, &(0x7f00000001c0)=[@text64={0x40, &(0x7f0000000040)="b9800000c00f3235001000000f30f24c0f2c49e8426dc4027d3493b80800003626660f7e676d660f1678b06cc403f9dfbeb70000000bc7442400f5000000c744240284d178bcff1c24f2f347dbe1", 0x4e}], 0x1, 0x48, 0x0, 0x0) pipe2(&(0x7f0000000000), 0x0) ioctl$KVM_RUN(r3, 0xae80, 0x40000000) 03:47:35 executing program 3: syz_mount_image$gfs2(&(0x7f0000000140)='gfs2\xfd', &(0x7f0000000200)='./file0\x00', 0x0, 0x0, 0x0, 0x0, &(0x7f00000003c0)={[{@locktable={'locktable', 0x3d, '/'}}, {@lockproto_nolock='lockproto=lock_nolock'}]}) [ 1116.225273] gfs2: not a GFS2 filesystem 03:47:36 executing program 1: r0 = openat$kvm(0xffffffffffffff9c, &(0x7f0000000140)='/dev/kvm\x00', 0x0, 0x0) r1 = ioctl$KVM_CREATE_VM(r0, 0xae01, 0x0) r2 = ioctl$KVM_CREATE_VCPU(r1, 0xae41, 0x0) ioctl$KVM_SET_USER_MEMORY_REGION(r1, 0x4020ae46, &(0x7f0000000400)={0x0, 0x3, 0x0, 0x2000, &(0x7f0000000000/0x2000)=nil}) syz_kvm_setup_cpu$x86(r1, 0xffffffffffffffff, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x0, 0x0, 0xfffffffffffffe78) sendmmsg$unix(0xffffffffffffffff, &(0x7f0000002780)=[{0x0, 0x0, &(0x7f0000001d00)=[{&(0x7f0000000bc0)="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", 0x3c5}], 0x1}], 0x1, 0x0) ioctl$KVM_REGISTER_COALESCED_MMIO(r1, 0x4010ae67, &(0x7f00000000c0)={0x0, 0x15200}) syz_kvm_setup_cpu$x86(0xffffffffffffffff, r2, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x8, 0x0, 0x0) ioctl$KVM_RUN(r2, 0xae80, 0x1400) 03:47:36 executing program 2: openat$dir(0xffffffffffffff9c, &(0x7f00000000c0)='./file0\x00', 0x2803ff, 0x10) syz_mount_image$gfs2(&(0x7f0000000080)='gfs2\x00', &(0x7f0000000040)='./file0\x00', 0x0, 0xfffffffffffffeeb, 0x0, 0x0, 0x0) socketpair$unix(0x1, 0x0, 0x0, 0x0) 03:47:36 executing program 5: r0 = socket$inet(0x2, 0x4000000000000001, 0x0) setsockopt$inet_tcp_int(r0, 0x6, 0x80000000000002, &(0x7f0000000040)=0x74, 0x4) bind$inet(r0, &(0x7f0000000180)={0x2, 0x4e23, @multicast1}, 0x10) sendto$inet(r0, 0x0, 0x0, 0x200007fd, &(0x7f0000e68000)={0x2, 0x4e23, @local}, 0x10) write$binfmt_elf64(r0, &(0x7f00000012c0)=ANY=[@ANYBLOB="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"], 0x209) mmap(&(0x7f0000000000/0xb36000)=nil, 0xb36000, 0x0, 0x8031, 0xffffffffffffffff, 0x0) sendmmsg$inet_sctp(r0, &(0x7f0000002600)=[{0x0, 0x0, &(0x7f0000000240)=[{&(0x7f0000000380)="d4", 0x1}], 0x1, 0x0, 0x0, 0xf00}], 0x1, 0x0) 03:47:36 executing program 0: socketpair$unix(0x1, 0x1, 0x0, &(0x7f0000000440)={0xffffffffffffffff, 0xffffffffffffffff}) ioctl$PERF_EVENT_IOC_ENABLE(r0, 0x8912, 0x400200) r1 = openat$kvm(0xffffffffffffff9c, &(0x7f00000000c0)='/dev/kvm\x00', 0x0, 0x0) openat$dlm_monitor(0xffffffffffffff9c, &(0x7f0000000340)='/dev/dlm-monitor\x00', 0x0, 0x0) r2 = ioctl$KVM_CREATE_VM(r1, 0xae01, 0x0) r3 = ioctl$KVM_CREATE_VCPU(r2, 0xae41, 0x0) syz_kvm_setup_cpu$x86(r2, 0xffffffffffffffff, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x0, 0x0, 0x0) syz_kvm_setup_cpu$x86(0xffffffffffffffff, r3, &(0x7f0000000000/0x18000)=nil, &(0x7f00000001c0)=[@text64={0x40, &(0x7f0000000040)="b9800000c00f3235001000000f30f24c0f2c49e8426dc4027d3493b80800003626660f7e676d660f1678b06cc403f9dfbeb70000000bc7442400f5000000c744240284d178bcff1c24f2f347dbe1", 0x4e}], 0x1, 0x48, 0x0, 0x0) pipe2(&(0x7f0000000000), 0x0) ioctl$KVM_RUN(r3, 0xae80, 0x3f00) [ 1116.571172] gfs2: fsid=_: Trying to join cluster "lock_nolock", "_" 03:47:36 executing program 2: syz_mount_image$bfs(&(0x7f0000000000)='bfs\x00', &(0x7f0000000040)='./file0\x00', 0x830, 0x4, &(0x7f0000000180)=[{&(0x7f0000000080)="9304345018b8e7b6c68c7a449beb1dca10c718b16f71f8b3ae6ee0dc42561656bdc49fd5cfc7ef3998", 0x29, 0x9}, {&(0x7f00000000c0)="76efac48f6450a473c08bb86998c0cf0fbc81ea35c4e913caf7ad2015d73e2e538ca566a5036b775175e", 0x2a, 0x7}, {&(0x7f0000000100)="ec7a11396abb5e0203ac6ab8c34e61d6785ef0a8144a6cd1adc8", 0x1a, 0x3}, {&(0x7f0000000240)="ab2ab8075230aa47f1274dc095a355ef42c95d688411bd08dee32cdec21b92be907a24f60a40fe0526a43b1abe945d825dcebfffc98e72a94dae119597f6da5e96846d18c8bf8694101d74a5eea426af217b035054b88b7c2ecfb314ee5d9899a296d28d76abfb7b71314e1e6259032d8e960ef03a1c118e8defa5a029eb36f0324d1274129a93caa61ac4663deab5e7d7fb39ecfe5a20d343a6b03e4c218775c3c6cd659a2cde238ec0c0ebc51fc7f93219c28579bb9c4c7dbddb89aaa0ee94fef66262cae19dda258ab3209c0285b58b26dab0b431a16602ea3200b7c0273975b3ad214e", 0xe5, 0x400}], 0x8000, 0x0) socketpair$unix(0x1, 0x4040005, 0x0, 0x0) open(&(0x7f0000000140)='./file0\x00', 0x400800, 0x100) r0 = openat$dlm_plock(0xffffffffffffff9c, &(0x7f0000000340)='/dev/dlm_plock\x00', 0x0, 0x0) ioctl$TIOCSTI(r0, 0x5412, 0x1) [ 1116.660200] gfs2: fsid=_: Now mounting FS... [ 1116.709994] gfs2: not a GFS2 filesystem 03:47:36 executing program 5: r0 = socket$inet(0x2, 0x4000000000000001, 0x0) setsockopt$inet_tcp_int(r0, 0x6, 0x80000000000002, &(0x7f0000000040)=0x74, 0x4) bind$inet(r0, &(0x7f0000000180)={0x2, 0x4e23, @multicast1}, 0x10) sendto$inet(r0, 0x0, 0x0, 0x200007fd, &(0x7f0000e68000)={0x2, 0x4e23, @local}, 0x10) write$binfmt_elf64(r0, &(0x7f00000012c0)=ANY=[@ANYBLOB="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"], 0x209) mmap(&(0x7f0000000000/0xb36000)=nil, 0xb36000, 0x3, 0x10, 0xffffffffffffffff, 0x0) sendmmsg$inet_sctp(r0, &(0x7f0000002600)=[{0x0, 0x0, &(0x7f0000000240)=[{&(0x7f0000000380)="d4", 0x1}], 0x1, 0x0, 0x0, 0xf00}], 0x1, 0x0) [ 1116.743091] gfs2: fsid=_: can't read superblock [ 1116.753430] gfs2: fsid=_: can't read superblock: -22 03:47:36 executing program 1: r0 = openat$kvm(0xffffffffffffff9c, &(0x7f0000000140)='/dev/kvm\x00', 0x0, 0x0) r1 = ioctl$KVM_CREATE_VM(r0, 0xae01, 0x0) r2 = ioctl$KVM_CREATE_VCPU(r1, 0xae41, 0x0) ioctl$KVM_SET_USER_MEMORY_REGION(r1, 0x4020ae46, &(0x7f0000000400)={0x0, 0x3, 0x0, 0x2000, &(0x7f0000000000/0x2000)=nil}) syz_kvm_setup_cpu$x86(r1, 0xffffffffffffffff, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x0, 0x0, 0xfffffffffffffe78) sendmmsg$unix(0xffffffffffffffff, &(0x7f0000002780)=[{0x0, 0x0, &(0x7f0000001d00)=[{&(0x7f0000000bc0)="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", 0x3c5}], 0x1}], 0x1, 0x0) ioctl$KVM_REGISTER_COALESCED_MMIO(r1, 0x4010ae67, &(0x7f00000000c0)={0x0, 0x15200}) syz_kvm_setup_cpu$x86(0xffffffffffffffff, r2, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x8, 0x0, 0x0) ioctl$KVM_RUN(r2, 0xae80, 0xc) 03:47:36 executing program 4: syz_mount_image$gfs2(&(0x7f0000000140)='gfs2\x00', &(0x7f0000000200)='./file0\x00', 0x4c00000000000000, 0x0, 0x0, 0x0, &(0x7f00000003c0)={[{@locktable={'locktable', 0x3d, '/'}}, {@lockproto_nolock='lockproto=lock_nolock'}]}) socketpair$unix(0x1, 0x1, 0x0, &(0x7f0000000180)) 03:47:36 executing program 0: socketpair$unix(0x1, 0x1, 0x0, &(0x7f0000000440)={0xffffffffffffffff, 0xffffffffffffffff}) ioctl$PERF_EVENT_IOC_ENABLE(r0, 0x8912, 0x400200) r1 = openat$kvm(0xffffffffffffff9c, &(0x7f00000000c0)='/dev/kvm\x00', 0x0, 0x0) openat$dlm_monitor(0xffffffffffffff9c, &(0x7f0000000340)='/dev/dlm-monitor\x00', 0x0, 0x0) r2 = ioctl$KVM_CREATE_VM(r1, 0xae01, 0x0) r3 = ioctl$KVM_CREATE_VCPU(r2, 0xae41, 0x0) syz_kvm_setup_cpu$x86(r2, 0xffffffffffffffff, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x0, 0x0, 0x0) syz_kvm_setup_cpu$x86(0xffffffffffffffff, r3, &(0x7f0000000000/0x18000)=nil, &(0x7f00000001c0)=[@text64={0x40, &(0x7f0000000040)="b9800000c00f3235001000000f30f24c0f2c49e8426dc4027d3493b80800003626660f7e676d660f1678b06cc403f9dfbeb70000000bc7442400f5000000c744240284d178bcff1c24f2f347dbe1", 0x4e}], 0x1, 0x48, 0x0, 0x0) pipe2(&(0x7f0000000000), 0x0) ioctl$KVM_RUN(r3, 0xae80, 0xffffffff00000000) 03:47:36 executing program 3: syz_mount_image$gfs2(&(0x7f0000000140)='gfs2\x00', &(0x7f0000000200)='./file0\x00', 0x0, 0x0, 0x0, 0x0, &(0x7f00000003c0)={[{@locktable={'locktable', 0x3d, '/'}}, {@lockproto_nolock='lockproto=lock_nolock'}]}) 03:47:36 executing program 5: r0 = socket$inet(0x2, 0x4000000000000001, 0x0) setsockopt$inet_tcp_int(r0, 0x6, 0x80000000000002, &(0x7f0000000040)=0x74, 0x4) bind$inet(r0, &(0x7f0000000180)={0x2, 0x4e23, @multicast1}, 0x10) sendto$inet(r0, 0x0, 0x0, 0x200007fd, &(0x7f0000e68000)={0x2, 0x4e23, @local}, 0x10) write$binfmt_elf64(r0, &(0x7f00000012c0)=ANY=[@ANYBLOB="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"], 0x209) mmap(&(0x7f0000000000/0xb36000)=nil, 0xb36000, 0x3, 0x10, 0xffffffffffffffff, 0x0) sendmmsg$inet_sctp(r0, &(0x7f0000002600)=[{0x0, 0x0, &(0x7f0000000240)=[{&(0x7f0000000380)="d4", 0x1}], 0x1, 0x0, 0x0, 0xf00}], 0x1, 0x0) 03:47:36 executing program 1: r0 = openat$kvm(0xffffffffffffff9c, &(0x7f0000000140)='/dev/kvm\x00', 0x0, 0x0) r1 = ioctl$KVM_CREATE_VM(r0, 0xae01, 0x0) r2 = ioctl$KVM_CREATE_VCPU(r1, 0xae41, 0x0) ioctl$KVM_SET_USER_MEMORY_REGION(r1, 0x4020ae46, &(0x7f0000000400)={0x0, 0x3, 0x0, 0x2000, &(0x7f0000000000/0x2000)=nil}) syz_kvm_setup_cpu$x86(r1, 0xffffffffffffffff, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x0, 0x0, 0xfffffffffffffe78) sendmmsg$unix(0xffffffffffffffff, &(0x7f0000002780)=[{0x0, 0x0, &(0x7f0000001d00)=[{&(0x7f0000000bc0)="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", 0x3c5}], 0x1}], 0x1, 0x0) ioctl$KVM_REGISTER_COALESCED_MMIO(r1, 0x4010ae67, &(0x7f00000000c0)={0x0, 0x15200}) syz_kvm_setup_cpu$x86(0xffffffffffffffff, r2, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x8, 0x0, 0x0) ioctl$KVM_RUN(r2, 0xae80, 0x38) 03:47:36 executing program 5: r0 = socket$inet(0x2, 0x4000000000000001, 0x0) setsockopt$inet_tcp_int(r0, 0x6, 0x80000000000002, &(0x7f0000000040)=0x74, 0x4) bind$inet(r0, &(0x7f0000000180)={0x2, 0x4e23, @multicast1}, 0x10) sendto$inet(r0, 0x0, 0x0, 0x200007fd, &(0x7f0000e68000)={0x2, 0x4e23, @local}, 0x10) write$binfmt_elf64(r0, &(0x7f00000012c0)=ANY=[@ANYBLOB="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"], 0x209) mmap(&(0x7f0000000000/0xb36000)=nil, 0xb36000, 0x3, 0x10, 0xffffffffffffffff, 0x0) sendmmsg$inet_sctp(r0, &(0x7f0000002600)=[{0x0, 0x0, &(0x7f0000000240)=[{&(0x7f0000000380)="d4", 0x1}], 0x1, 0x0, 0x0, 0xf00}], 0x1, 0x0) [ 1117.203043] gfs2: fsid=_: Trying to join cluster "lock_nolock", "_" [ 1117.229614] sysfs: cannot create duplicate filename '/fs/gfs2/_' [ 1117.274803] gfs2: fsid=_: Now mounting FS... [ 1117.286411] CPU: 0 PID: 21633 Comm: syz-executor4 Not tainted 4.20.0-next-20190103 #4 [ 1117.294401] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 1117.303539] gfs2: not a GFS2 filesystem [ 1117.303755] Call Trace: [ 1117.310343] dump_stack+0x1db/0x2d0 [ 1117.313986] ? dump_stack_print_info.cold+0x20/0x20 [ 1117.319016] ? _raw_spin_unlock_irqrestore+0xa4/0xe0 [ 1117.324159] sysfs_warn_dup.cold+0x1c/0x31 [ 1117.328417] sysfs_create_dir_ns+0x2ce/0x330 [ 1117.332833] ? sysfs_create_mount_point+0xa0/0xa0 [ 1117.337690] ? do_raw_spin_trylock+0x270/0x270 [ 1117.342282] kobject_add_internal.cold+0x129/0x6d8 [ 1117.347226] ? kobj_ns_type_registered+0x60/0x60 [ 1117.351981] ? kfree_const+0x59/0x70 [ 1117.355696] ? rcu_read_lock_sched_held+0x110/0x130 [ 1117.360714] ? kfree+0x1fa/0x230 [ 1117.364096] ? kfree_const+0x5e/0x70 [ 1117.367818] kobject_init_and_add+0x101/0x160 [ 1117.372322] ? kobject_add_internal+0x4b0/0x4b0 [ 1117.376992] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 1117.382529] ? vsnprintf+0x368/0x1b10 [ 1117.386342] gfs2_sys_fs_add+0x210/0x500 [ 1117.390402] ? recover_store+0x1a0/0x1a0 [ 1117.394466] ? snprintf+0xbb/0xf0 [ 1117.397913] ? vsprintf+0x30/0x40 [ 1117.401361] ? set_blocksize+0x2bf/0x340 [ 1117.405429] ? memcpy+0x46/0x50 [ 1117.408720] fill_super+0x894/0x1990 [ 1117.412445] ? gfs2_online_uevent+0x2d0/0x2d0 [ 1117.416945] ? snprintf+0xbb/0xf0 [ 1117.420642] ? vsprintf+0x40/0x40 [ 1117.424166] ? ns_capable_common+0x141/0x170 [ 1117.428573] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 1117.433585] ? set_blocksize+0x2bf/0x340 [ 1117.437647] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 1117.443213] gfs2_mount+0x5db/0x6ee [ 1117.446854] ? fill_super+0x1990/0x1990 [ 1117.450855] ? vfs_parse_fs_string+0x1c5/0x2b0 [ 1117.455455] ? vfs_parse_fs_param+0x4b0/0x4b0 [ 1117.459953] ? fill_super+0x1990/0x1990 [ 1117.463927] legacy_get_tree+0xf2/0x200 [ 1117.467907] vfs_get_tree+0x123/0x450 [ 1117.471714] do_mount+0x1622/0x2fa0 [ 1117.475356] ? copy_mount_string+0x40/0x40 [ 1117.479594] ? kmem_cache_alloc_trace+0x354/0x760 [ 1117.484451] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 1117.489990] ? copy_mount_options+0x30e/0x440 [ 1117.494513] ksys_mount+0xdb/0x150 [ 1117.498077] __x64_sys_mount+0xbe/0x150 [ 1117.502064] do_syscall_64+0x1a3/0x800 [ 1117.505956] ? syscall_return_slowpath+0x5f0/0x5f0 [ 1117.510899] ? prepare_exit_to_usermode+0x232/0x3b0 [ 1117.515922] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 1117.520773] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 1117.525959] RIP: 0033:0x45a93a [ 1117.529153] Code: b8 a6 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 ed 8c fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 0f 83 ca 8c fb ff c3 66 0f 1f 84 00 00 00 00 00 [ 1117.548068] RSP: 002b:00007ff699fe9a88 EFLAGS: 00000206 ORIG_RAX: 00000000000000a5 [ 1117.555770] RAX: ffffffffffffffda RBX: 00007ff699fe9b30 RCX: 000000000045a93a [ 1117.563036] RDX: 00007ff699fe9ad0 RSI: 0000000020000200 RDI: 00007ff699fe9af0 03:47:37 executing program 0: socketpair$unix(0x1, 0x1, 0x0, &(0x7f0000000440)={0xffffffffffffffff, 0xffffffffffffffff}) ioctl$PERF_EVENT_IOC_ENABLE(r0, 0x8912, 0x400200) r1 = openat$kvm(0xffffffffffffff9c, &(0x7f00000000c0)='/dev/kvm\x00', 0x0, 0x0) openat$dlm_monitor(0xffffffffffffff9c, &(0x7f0000000340)='/dev/dlm-monitor\x00', 0x0, 0x0) r2 = ioctl$KVM_CREATE_VM(r1, 0xae01, 0x0) r3 = ioctl$KVM_CREATE_VCPU(r2, 0xae41, 0x0) syz_kvm_setup_cpu$x86(r2, 0xffffffffffffffff, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x0, 0x0, 0x0) syz_kvm_setup_cpu$x86(0xffffffffffffffff, r3, &(0x7f0000000000/0x18000)=nil, &(0x7f00000001c0)=[@text64={0x40, &(0x7f0000000040)="b9800000c00f3235001000000f30f24c0f2c49e8426dc4027d3493b80800003626660f7e676d660f1678b06cc403f9dfbeb70000000bc7442400f5000000c744240284d178bcff1c24f2f347dbe1", 0x4e}], 0x1, 0x48, 0x0, 0x0) pipe2(&(0x7f0000000000), 0x0) ioctl$KVM_RUN(r3, 0xae80, 0x7000000) [ 1117.570310] RBP: 0000000020000200 R08: 00007ff699fe9b30 R09: 00007ff699fe9ad0 [ 1117.577583] R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000003 [ 1117.584849] R13: 0000000000000000 R14: 00000000004db380 R15: 00000000ffffffff [ 1117.593933] kobject_add_internal failed for _ with -EEXIST, don't try to register things with the same name in the same directory. [ 1117.607355] gfs2: fsid=_: error -17 adding sysfs files [ 1117.613297] gfs2: fsid=_: can't read superblock [ 1117.618155] gfs2: fsid=_: can't read superblock: -22 03:47:37 executing program 2: syz_mount_image$gfs2(&(0x7f0000000140)='gfs2\x00', &(0x7f0000000200)='./file0\x00', 0x0, 0x0, 0x0, 0x0, 0x0) socketpair$unix(0x1, 0x7, 0x0, 0x0) r0 = openat$pfkey(0xffffffffffffff9c, &(0x7f00000038c0)='/proc/self/net/pfkey\x00', 0x44001, 0x0) getsockopt$inet_sctp_SCTP_ADAPTATION_LAYER(r0, 0x84, 0x7, &(0x7f0000003900), &(0x7f0000003940)=0x4) 03:47:37 executing program 4: syz_mount_image$gfs2(&(0x7f0000000140)='gfs2\x00', &(0x7f0000000200)='./file0\x00', 0xea250100, 0x0, 0x0, 0x0, &(0x7f00000003c0)={[{@locktable={'locktable', 0x3d, '/'}}, {@lockproto_nolock='lockproto=lock_nolock'}]}) socketpair$unix(0x1, 0x1, 0x0, &(0x7f0000000180)) 03:47:37 executing program 5: r0 = socket$inet(0x2, 0x4000000000000001, 0x0) setsockopt$inet_tcp_int(r0, 0x6, 0x80000000000002, &(0x7f0000000040)=0x74, 0x4) bind$inet(r0, &(0x7f0000000180)={0x2, 0x4e23, @multicast1}, 0x10) sendto$inet(r0, 0x0, 0x0, 0x200007fd, &(0x7f0000e68000)={0x2, 0x4e23, @local}, 0x10) write$binfmt_elf64(r0, &(0x7f00000012c0)=ANY=[@ANYBLOB="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"], 0x209) mmap(&(0x7f0000000000/0xb36000)=nil, 0xb36000, 0x3, 0x8031, 0xffffffffffffffff, 0x0) sendmmsg$inet_sctp(0xffffffffffffffff, &(0x7f0000002600)=[{0x0, 0x0, &(0x7f0000000240)=[{&(0x7f0000000380)="d4", 0x1}], 0x1, 0x0, 0x0, 0xf00}], 0x1, 0x0) 03:47:37 executing program 1: r0 = openat$kvm(0xffffffffffffff9c, &(0x7f0000000140)='/dev/kvm\x00', 0x0, 0x0) r1 = ioctl$KVM_CREATE_VM(r0, 0xae01, 0x0) r2 = ioctl$KVM_CREATE_VCPU(r1, 0xae41, 0x0) ioctl$KVM_SET_USER_MEMORY_REGION(r1, 0x4020ae46, &(0x7f0000000400)={0x0, 0x3, 0x0, 0x2000, &(0x7f0000000000/0x2000)=nil}) syz_kvm_setup_cpu$x86(r1, 0xffffffffffffffff, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x0, 0x0, 0xfffffffffffffe78) sendmmsg$unix(0xffffffffffffffff, &(0x7f0000002780)=[{0x0, 0x0, &(0x7f0000001d00)=[{&(0x7f0000000bc0)="b474ac0450ac6a2ff5ba4c1a19990e818d6fb646a5739e09c636550fdd39d0316e215a5a9427ac426da0b375844fb7f5ee5130d0b57cdab9af6f5f0d39c1787ec9ecde6263664c6a9859b7a0c4cbc99a05184da950f370cf65a18bff7975c0c12ca4227baa2164d031a5472d7f581c6f7eedd103d8fc89b6b4b52e5d3da0817eec8c57f722e356068b99a056ab6a693b9eebe38d75170491e07f9f69573b02b1a048f29e39cd24fed99e8606ffcbe4f617f48370ec62bd327cdfb9da8e8fef232b2e8f8f6868bb1781eab4c294befd65d9a336123bd34be8f256b5fc0420aa6e930f292a9a06365daaebd0bcaaaf5e0c12167aad0c62a48666383ee58b37df8077c5d2d5298d5247e240a78ff2543147129775f6d4a872df80d9da66c2a0a169df65141cbe88b1e280d60f6e11b25a0b5bb1bdd430378761d547f3ff7e42cc84c849e66004e30905d908e352a53f95bca84a68a6ce5ee82b69c939a196a7060bee28d8dee1ed52ae04b228bedf9302df44cc957780e42c2784d18e3695ee5e73dbe385331494af3cbcf8952e85469e9566c32692c0ceae8dab7b9553b5e8aa66edbad2ed828ba2a665a48a2822d9dc538863aea705c926c5a12fee84db545a36a13281e09e82c06211cc195cb4409bedfb7cf22f6c01fba9720bc4f447da73bb95bab6c056ce51bbc9d5b6622c54152e853f9639d2db2a5992e0f0e8f77a2e5efcfd139869cbdc902622399035d6ab8c22e33605be6850356be97ac05588720e1e215fbf5cb6633f0894e0a4dbd28708cac77792a31b00f47d18cebcb9114f1b0ffd66b587c5f9ba086fc530c6a0ac561068de208f18a3b6adc47f04bd63bd4a31544eb953398ddee5b5e4533aa529947aa46e7e517ff719e559c106f8afc570019f272a9f2d2699c7384612854de44dc40bb33aafee4e5fab1c06ceeffec56782452589f80c3946e6631c591e7f82af7e3a6422e0f35b0847f0a3049ee29b09f8aadf59c96a99576be85d6ddcf8c4d82373355add27397517402a56fd36bf877a53731413c30786431262705fb01511a778482cd85b60323b683e0e9d2f06b57678ddcf06f6da03f818e7f0b4db7045527f6e00fa26fe586fe0fcc72024fad6bab1739f6d7980d21f1fac0e7f53ee4cb254349b93a89f5695be91e5c586411b18f3f11298d979abdf4dd4796b181e623189aa73182c4c5ff346545168a520241ce23e08ade26085f654537258efaacfe1a64b2261c5180eb7c01ca6f4dc0f08f98ec12c06036278eff4c8d3b852bb2022be745861268ffbe0bb37c45452d2ac97aa6cb81db9f428688e6eab0e85ba6eb2eaecf4e8e137a2101f04b201258a71d857194610", 0x3c5}], 0x1}], 0x1, 0x0) ioctl$KVM_REGISTER_COALESCED_MMIO(r1, 0x4010ae67, &(0x7f00000000c0)={0x0, 0x15200}) syz_kvm_setup_cpu$x86(0xffffffffffffffff, r2, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x8, 0x0, 0x0) ioctl$KVM_RUN(r2, 0xae80, 0xa) [ 1117.871636] gfs2: not a GFS2 filesystem [ 1117.904641] gfs2: fsid=_: Trying to join cluster "lock_nolock", "_" [ 1117.953341] sysfs: cannot create duplicate filename '/fs/gfs2/_' [ 1117.962771] gfs2: fsid=_: Now mounting FS... [ 1117.988650] CPU: 0 PID: 21664 Comm: syz-executor4 Not tainted 4.20.0-next-20190103 #4 [ 1117.996638] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 1118.005993] Call Trace: [ 1118.008623] dump_stack+0x1db/0x2d0 [ 1118.012266] ? dump_stack_print_info.cold+0x20/0x20 [ 1118.017308] ? _raw_spin_unlock_irqrestore+0xa4/0xe0 [ 1118.022453] sysfs_warn_dup.cold+0x1c/0x31 [ 1118.026708] sysfs_create_dir_ns+0x2ce/0x330 [ 1118.031126] ? sysfs_create_mount_point+0xa0/0xa0 [ 1118.035980] ? do_raw_spin_trylock+0x270/0x270 [ 1118.040600] kobject_add_internal.cold+0x129/0x6d8 [ 1118.045588] ? kobj_ns_type_registered+0x60/0x60 [ 1118.050365] ? kfree_const+0x59/0x70 [ 1118.054093] ? rcu_read_lock_sched_held+0x110/0x130 [ 1118.059124] ? kfree+0x1fa/0x230 [ 1118.062504] ? kfree_const+0x5e/0x70 [ 1118.066236] kobject_init_and_add+0x101/0x160 [ 1118.070745] ? kobject_add_internal+0x4b0/0x4b0 [ 1118.075433] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 1118.080980] ? vsnprintf+0x368/0x1b10 [ 1118.084811] gfs2_sys_fs_add+0x210/0x500 [ 1118.088888] ? recover_store+0x1a0/0x1a0 [ 1118.092984] ? snprintf+0xbb/0xf0 [ 1118.096466] ? vsprintf+0x30/0x40 [ 1118.099936] ? set_blocksize+0x2bf/0x340 [ 1118.104012] ? memcpy+0x46/0x50 [ 1118.107341] fill_super+0x894/0x1990 [ 1118.111107] ? gfs2_online_uevent+0x2d0/0x2d0 [ 1118.115642] ? snprintf+0xbb/0xf0 [ 1118.119127] ? vsprintf+0x40/0x40 [ 1118.122587] ? ns_capable_common+0x141/0x170 [ 1118.127003] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 1118.132022] ? set_blocksize+0x2bf/0x340 [ 1118.136096] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 1118.141636] gfs2_mount+0x5db/0x6ee [ 1118.145268] ? fill_super+0x1990/0x1990 [ 1118.149270] ? vfs_parse_fs_string+0x1c5/0x2b0 [ 1118.153858] ? vfs_parse_fs_param+0x4b0/0x4b0 [ 1118.158367] ? fill_super+0x1990/0x1990 [ 1118.162348] legacy_get_tree+0xf2/0x200 [ 1118.166344] vfs_get_tree+0x123/0x450 [ 1118.170153] do_mount+0x1622/0x2fa0 [ 1118.173792] ? copy_mount_string+0x40/0x40 [ 1118.178032] ? kmem_cache_alloc_trace+0x354/0x760 [ 1118.182885] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 1118.188424] ? _copy_from_user+0xdd/0x150 [ 1118.192580] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 1118.198123] ? copy_mount_options+0x30e/0x440 [ 1118.202631] ksys_mount+0xdb/0x150 [ 1118.206187] __x64_sys_mount+0xbe/0x150 [ 1118.210170] do_syscall_64+0x1a3/0x800 [ 1118.214083] ? syscall_return_slowpath+0x5f0/0x5f0 [ 1118.219016] ? prepare_exit_to_usermode+0x232/0x3b0 [ 1118.224042] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 1118.228906] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 1118.234095] RIP: 0033:0x45a93a [ 1118.237323] Code: b8 a6 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 ed 8c fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 0f 83 ca 8c fb ff c3 66 0f 1f 84 00 00 00 00 00 [ 1118.256220] RSP: 002b:00007ff699fe9a88 EFLAGS: 00000206 ORIG_RAX: 00000000000000a5 [ 1118.263928] RAX: ffffffffffffffda RBX: 00007ff699fe9b30 RCX: 000000000045a93a [ 1118.271192] RDX: 00007ff699fe9ad0 RSI: 0000000020000200 RDI: 00007ff699fe9af0 [ 1118.278459] RBP: 0000000020000200 R08: 00007ff699fe9b30 R09: 00007ff699fe9ad0 [ 1118.285723] R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000003 [ 1118.292989] R13: 0000000000000000 R14: 00000000004db380 R15: 00000000ffffffff 03:47:38 executing program 0: socketpair$unix(0x1, 0x1, 0x0, &(0x7f0000000440)={0xffffffffffffffff, 0xffffffffffffffff}) ioctl$PERF_EVENT_IOC_ENABLE(r0, 0x8912, 0x400200) r1 = openat$kvm(0xffffffffffffff9c, &(0x7f00000000c0)='/dev/kvm\x00', 0x0, 0x0) openat$dlm_monitor(0xffffffffffffff9c, &(0x7f0000000340)='/dev/dlm-monitor\x00', 0x0, 0x0) r2 = ioctl$KVM_CREATE_VM(r1, 0xae01, 0x0) r3 = ioctl$KVM_CREATE_VCPU(r2, 0xae41, 0x0) syz_kvm_setup_cpu$x86(r2, 0xffffffffffffffff, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x0, 0x0, 0x0) syz_kvm_setup_cpu$x86(0xffffffffffffffff, r3, &(0x7f0000000000/0x18000)=nil, &(0x7f00000001c0)=[@text64={0x40, &(0x7f0000000040)="b9800000c00f3235001000000f30f24c0f2c49e8426dc4027d3493b80800003626660f7e676d660f1678b06cc403f9dfbeb70000000bc7442400f5000000c744240284d178bcff1c24f2f347dbe1", 0x4e}], 0x1, 0x48, 0x0, 0x0) pipe2(&(0x7f0000000000), 0x0) ioctl$KVM_RUN(r3, 0xae80, 0x700) [ 1118.304401] gfs2: not a GFS2 filesystem [ 1118.322754] gfs2: not a GFS2 filesystem [ 1118.326747] gfs2: fsid=_: can't read superblock [ 1118.331442] gfs2: fsid=_: can't read superblock: -22 [ 1118.372853] kobject_add_internal failed for _ with -EEXIST, don't try to register things with the same name in the same directory. 03:47:38 executing program 2: r0 = openat$cgroup_ro(0xffffffffffffffff, &(0x7f0000000000)='memory.swap.current\x00', 0x0, 0x0) setsockopt$bt_BT_FLUSHABLE(r0, 0x112, 0x8, &(0x7f0000000040)=0x5, 0x4) syz_mount_image$gfs2(&(0x7f0000000140)='gfs2\x00', &(0x7f0000000200)='./file0\x00', 0x0, 0x0, 0x0, 0x0, 0x0) ioctl$DRM_IOCTL_AUTH_MAGIC(r0, 0x40046411, &(0x7f0000000080)=0x6) socketpair$unix(0x1, 0x0, 0x0, 0x0) [ 1118.465163] gfs2: fsid=_: error -17 adding sysfs files 03:47:38 executing program 1: r0 = openat$kvm(0xffffffffffffff9c, &(0x7f0000000140)='/dev/kvm\x00', 0x0, 0x0) r1 = ioctl$KVM_CREATE_VM(r0, 0xae01, 0x0) r2 = ioctl$KVM_CREATE_VCPU(r1, 0xae41, 0x0) ioctl$KVM_SET_USER_MEMORY_REGION(r1, 0x4020ae46, &(0x7f0000000400)={0x0, 0x3, 0x0, 0x2000, &(0x7f0000000000/0x2000)=nil}) syz_kvm_setup_cpu$x86(r1, 0xffffffffffffffff, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x0, 0x0, 0xfffffffffffffe78) sendmmsg$unix(0xffffffffffffffff, &(0x7f0000002780)=[{0x0, 0x0, &(0x7f0000001d00)=[{&(0x7f0000000bc0)="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", 0x3c5}], 0x1}], 0x1, 0x0) ioctl$KVM_REGISTER_COALESCED_MMIO(r1, 0x4010ae67, &(0x7f00000000c0)={0x0, 0x15200}) syz_kvm_setup_cpu$x86(0xffffffffffffffff, r2, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x8, 0x0, 0x0) ioctl$KVM_RUN(r2, 0xae80, 0x60000000) 03:47:38 executing program 3: syz_mount_image$gfs2(&(0x7f0000000140)='gfs2\x00', &(0x7f0000000200)='./file0\x00', 0x0, 0x0, 0x0, 0x0, &(0x7f00000003c0)={[{@locktable={'locktable', 0x3d, '/'}}, {@lockproto_nolock='lockproto=lock_nolock'}]}) 03:47:38 executing program 0: socketpair$unix(0x1, 0x1, 0x0, &(0x7f0000000440)={0xffffffffffffffff, 0xffffffffffffffff}) ioctl$PERF_EVENT_IOC_ENABLE(r0, 0x8912, 0x400200) r1 = openat$kvm(0xffffffffffffff9c, &(0x7f00000000c0)='/dev/kvm\x00', 0x0, 0x0) openat$dlm_monitor(0xffffffffffffff9c, &(0x7f0000000340)='/dev/dlm-monitor\x00', 0x0, 0x0) r2 = ioctl$KVM_CREATE_VM(r1, 0xae01, 0x0) r3 = ioctl$KVM_CREATE_VCPU(r2, 0xae41, 0x0) syz_kvm_setup_cpu$x86(r2, 0xffffffffffffffff, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x0, 0x0, 0x0) syz_kvm_setup_cpu$x86(0xffffffffffffffff, r3, &(0x7f0000000000/0x18000)=nil, &(0x7f00000001c0)=[@text64={0x40, &(0x7f0000000040)="b9800000c00f3235001000000f30f24c0f2c49e8426dc4027d3493b80800003626660f7e676d660f1678b06cc403f9dfbeb70000000bc7442400f5000000c744240284d178bcff1c24f2f347dbe1", 0x4e}], 0x1, 0x48, 0x0, 0x0) pipe2(&(0x7f0000000000), 0x0) ioctl$KVM_RUN(r3, 0xae80, 0x11000000) [ 1118.814901] gfs2: not a GFS2 filesystem 03:47:38 executing program 1: r0 = openat$kvm(0xffffffffffffff9c, &(0x7f0000000140)='/dev/kvm\x00', 0x0, 0x0) r1 = ioctl$KVM_CREATE_VM(r0, 0xae01, 0x0) r2 = ioctl$KVM_CREATE_VCPU(r1, 0xae41, 0x0) ioctl$KVM_SET_USER_MEMORY_REGION(r1, 0x4020ae46, &(0x7f0000000400)={0x0, 0x3, 0x0, 0x2000, &(0x7f0000000000/0x2000)=nil}) syz_kvm_setup_cpu$x86(r1, 0xffffffffffffffff, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x0, 0x0, 0xfffffffffffffe78) sendmmsg$unix(0xffffffffffffffff, &(0x7f0000002780)=[{0x0, 0x0, &(0x7f0000001d00)=[{&(0x7f0000000bc0)="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", 0x3c5}], 0x1}], 0x1, 0x0) ioctl$KVM_REGISTER_COALESCED_MMIO(r1, 0x4010ae67, &(0x7f00000000c0)={0x0, 0x15200}) syz_kvm_setup_cpu$x86(0xffffffffffffffff, r2, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x8, 0x0, 0x0) ioctl$KVM_RUN(r2, 0xae80, 0x1e000000) 03:47:38 executing program 4: syz_mount_image$gfs2(&(0x7f0000000140)='gfs2\x00', &(0x7f0000000200)='./file0\x00', 0xe2250100, 0x0, 0x0, 0x0, &(0x7f00000003c0)={[{@locktable={'locktable', 0x3d, '/'}}, {@lockproto_nolock='lockproto=lock_nolock'}]}) socketpair$unix(0x1, 0x1, 0x0, &(0x7f0000000180)) [ 1118.898751] gfs2: not a GFS2 filesystem [ 1118.909824] gfs2: fsid=_: Trying to join cluster "lock_nolock", "_" [ 1118.926777] gfs2: fsid=_: Now mounting FS... [ 1118.944980] gfs2: not a GFS2 filesystem 03:47:38 executing program 5: r0 = socket$inet(0x2, 0x4000000000000001, 0x0) setsockopt$inet_tcp_int(r0, 0x6, 0x80000000000002, &(0x7f0000000040)=0x74, 0x4) bind$inet(r0, &(0x7f0000000180)={0x2, 0x4e23, @multicast1}, 0x10) sendto$inet(r0, 0x0, 0x0, 0x200007fd, &(0x7f0000e68000)={0x2, 0x4e23, @local}, 0x10) write$binfmt_elf64(r0, &(0x7f00000012c0)=ANY=[@ANYBLOB="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"], 0x209) mmap(&(0x7f0000000000/0xb36000)=nil, 0xb36000, 0x3, 0x8031, 0xffffffffffffffff, 0x0) sendmmsg$inet_sctp(r0, 0x0, 0x0, 0x0) [ 1118.953378] gfs2: fsid=_: can't read superblock [ 1118.963029] gfs2: fsid=_: can't read superblock: -22 03:47:38 executing program 2: syz_mount_image$gfs2(&(0x7f0000000140)='gfs2\x00', &(0x7f0000000200)='./file0\x00', 0x0, 0x0, 0x0, 0x0, 0x0) socketpair$unix(0x1, 0xb, 0x0, 0x0) 03:47:38 executing program 0: socketpair$unix(0x1, 0x1, 0x0, &(0x7f0000000440)={0xffffffffffffffff, 0xffffffffffffffff}) ioctl$PERF_EVENT_IOC_ENABLE(r0, 0x8912, 0x400200) r1 = openat$kvm(0xffffffffffffff9c, &(0x7f00000000c0)='/dev/kvm\x00', 0x0, 0x0) openat$dlm_monitor(0xffffffffffffff9c, &(0x7f0000000340)='/dev/dlm-monitor\x00', 0x0, 0x0) r2 = ioctl$KVM_CREATE_VM(r1, 0xae01, 0x0) r3 = ioctl$KVM_CREATE_VCPU(r2, 0xae41, 0x0) syz_kvm_setup_cpu$x86(r2, 0xffffffffffffffff, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x0, 0x0, 0x0) syz_kvm_setup_cpu$x86(0xffffffffffffffff, r3, &(0x7f0000000000/0x18000)=nil, &(0x7f00000001c0)=[@text64={0x40, &(0x7f0000000040)="b9800000c00f3235001000000f30f24c0f2c49e8426dc4027d3493b80800003626660f7e676d660f1678b06cc403f9dfbeb70000000bc7442400f5000000c744240284d178bcff1c24f2f347dbe1", 0x4e}], 0x1, 0x48, 0x0, 0x0) pipe2(&(0x7f0000000000), 0x0) ioctl$KVM_RUN(r3, 0xae80, 0x80ffff00000000) [ 1119.184774] gfs2: not a GFS2 filesystem [ 1119.263395] gfs2: fsid=_: Trying to join cluster "lock_nolock", "_" [ 1119.278267] gfs2: fsid=_: Now mounting FS... [ 1119.300819] gfs2: not a GFS2 filesystem 03:47:39 executing program 2: syz_mount_image$gfs2(&(0x7f0000000040)='gfs2\x00', &(0x7f0000000180)='./file0\x00', 0x10003, 0xffffffffffffff7c, 0x0, 0x0, 0x0) r0 = fcntl$dupfd(0xffffffffffffff9c, 0x406, 0xffffffffffffffff) getsockopt$inet_sctp6_SCTP_PEER_ADDR_THLDS(0xffffffffffffffff, 0x84, 0x1f, &(0x7f00000000c0)={0x0, @in6={{0xa, 0x4e21, 0x6, @remote, 0x7fffffff}}, 0x0, 0x800}, &(0x7f00000001c0)=0x90) getsockopt$inet_sctp6_SCTP_PEER_AUTH_CHUNKS(r0, 0x84, 0x1a, &(0x7f0000000200)=ANY=[@ANYRES32=r1, @ANYBLOB="72000000af4d025373427e2a7692d285121b7c471e2882f3752db5f182e8e8ebff3679cbb76fee72baa5f67d8d24840b76129fba6614fcd5f202e4404b26b6dac76c5810f0163c6940bbd9d169226a977740f1bbbca7daa0cc6323174ae148d69bafec462835f8fa8be709553f6c"], &(0x7f0000000280)=0x7a) socketpair$unix(0x1, 0x0, 0x0, 0x0) ioctl$DRM_IOCTL_AGP_ALLOC(r0, 0xc0206434, &(0x7f00000002c0)={0x40, 0x0, 0x2, 0x40}) ioctl$DRM_IOCTL_AGP_UNBIND(r0, 0x40106437, &(0x7f0000000300)={r2, 0x1}) r3 = socket$can_raw(0x1d, 0x3, 0x1) poll(&(0x7f0000000080)=[{r3, 0x1000}, {r3, 0x40}, {r3, 0x4000}, {r3, 0x420}], 0x4, 0x4) openat$dlm_control(0xffffffffffffff9c, &(0x7f0000000000)='/dev/dlm-control\x00', 0x80001, 0x0) getsockopt$inet6_buf(r0, 0x29, 0xf3, &(0x7f0000000340)=""/54, &(0x7f0000000380)=0x36) [ 1119.313993] gfs2: fsid=_: can't read superblock [ 1119.318691] gfs2: fsid=_: can't read superblock: -22 [ 1119.347111] sysfs: cannot create duplicate filename '/fs/gfs2/_' 03:47:39 executing program 1: r0 = openat$kvm(0xffffffffffffff9c, &(0x7f0000000140)='/dev/kvm\x00', 0x0, 0x0) r1 = ioctl$KVM_CREATE_VM(r0, 0xae01, 0x0) r2 = ioctl$KVM_CREATE_VCPU(r1, 0xae41, 0x0) ioctl$KVM_SET_USER_MEMORY_REGION(r1, 0x4020ae46, &(0x7f0000000400)={0x0, 0x3, 0x0, 0x2000, &(0x7f0000000000/0x2000)=nil}) syz_kvm_setup_cpu$x86(r1, 0xffffffffffffffff, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x0, 0x0, 0xfffffffffffffe78) sendmmsg$unix(0xffffffffffffffff, &(0x7f0000002780)=[{0x0, 0x0, &(0x7f0000001d00)=[{&(0x7f0000000bc0)="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", 0x3c5}], 0x1}], 0x1, 0x0) ioctl$KVM_REGISTER_COALESCED_MMIO(r1, 0x4010ae67, &(0x7f00000000c0)={0x0, 0x15200}) syz_kvm_setup_cpu$x86(0xffffffffffffffff, r2, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x8, 0x0, 0x0) ioctl$KVM_RUN(r2, 0xae80, 0x4000000) [ 1119.459405] CPU: 1 PID: 21722 Comm: syz-executor4 Not tainted 4.20.0-next-20190103 #4 [ 1119.467413] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 1119.476764] Call Trace: [ 1119.479357] dump_stack+0x1db/0x2d0 [ 1119.482993] ? dump_stack_print_info.cold+0x20/0x20 [ 1119.488041] ? _raw_spin_unlock_irqrestore+0xa4/0xe0 [ 1119.493182] sysfs_warn_dup.cold+0x1c/0x31 [ 1119.497424] sysfs_create_dir_ns+0x2ce/0x330 [ 1119.497443] ? sysfs_create_mount_point+0xa0/0xa0 [ 1119.497459] ? do_raw_spin_trylock+0x270/0x270 [ 1119.497488] kobject_add_internal.cold+0x129/0x6d8 [ 1119.506714] ? kobj_ns_type_registered+0x60/0x60 [ 1119.506730] ? kfree_const+0x59/0x70 [ 1119.506745] ? rcu_read_lock_sched_held+0x110/0x130 [ 1119.506760] ? kfree+0x1fa/0x230 [ 1119.506778] ? kfree_const+0x5e/0x70 [ 1119.506799] kobject_init_and_add+0x101/0x160 [ 1119.506826] ? kobject_add_internal+0x4b0/0x4b0 [ 1119.506847] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 1119.506863] ? vsnprintf+0x368/0x1b10 [ 1119.552025] gfs2_sys_fs_add+0x210/0x500 [ 1119.552043] ? recover_store+0x1a0/0x1a0 [ 1119.563947] ? snprintf+0xbb/0xf0 [ 1119.567405] ? vsprintf+0x30/0x40 [ 1119.570882] ? set_blocksize+0x2bf/0x340 [ 1119.574951] ? memcpy+0x46/0x50 [ 1119.574973] fill_super+0x894/0x1990 [ 1119.575000] ? gfs2_online_uevent+0x2d0/0x2d0 [ 1119.575023] ? snprintf+0xbb/0xf0 [ 1119.575037] ? vsprintf+0x40/0x40 [ 1119.575069] ? ns_capable_common+0x141/0x170 [ 1119.575085] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 1119.602842] ? set_blocksize+0x2bf/0x340 [ 1119.606904] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 1119.612444] gfs2_mount+0x5db/0x6ee [ 1119.616089] ? fill_super+0x1990/0x1990 [ 1119.620107] ? vfs_parse_fs_string+0x1c5/0x2b0 [ 1119.624689] ? vfs_parse_fs_param+0x4b0/0x4b0 [ 1119.624704] ? fill_super+0x1990/0x1990 [ 1119.624718] legacy_get_tree+0xf2/0x200 [ 1119.624738] vfs_get_tree+0x123/0x450 [ 1119.624757] do_mount+0x1622/0x2fa0 [ 1119.624793] ? copy_mount_string+0x40/0x40 [ 1119.624810] ? kmem_cache_alloc_trace+0x354/0x760 [ 1119.653648] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 1119.653663] ? _copy_from_user+0xdd/0x150 [ 1119.653680] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 1119.653694] ? copy_mount_options+0x30e/0x440 [ 1119.653713] ksys_mount+0xdb/0x150 [ 1119.653730] __x64_sys_mount+0xbe/0x150 [ 1119.663394] do_syscall_64+0x1a3/0x800 [ 1119.663412] ? syscall_return_slowpath+0x5f0/0x5f0 [ 1119.663429] ? prepare_exit_to_usermode+0x232/0x3b0 [ 1119.663448] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 1119.663473] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 1119.663484] RIP: 0033:0x45a93a [ 1119.663499] Code: b8 a6 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 ed 8c fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 0f 83 ca 8c fb ff c3 66 0f 1f 84 00 00 00 00 00 [ 1119.663507] RSP: 002b:00007ff699fe9a88 EFLAGS: 00000206 ORIG_RAX: 00000000000000a5 [ 1119.673528] RAX: ffffffffffffffda RBX: 00007ff699fe9b30 RCX: 000000000045a93a [ 1119.673537] RDX: 00007ff699fe9ad0 RSI: 0000000020000200 RDI: 00007ff699fe9af0 [ 1119.673546] RBP: 0000000020000200 R08: 00007ff699fe9b30 R09: 00007ff699fe9ad0 [ 1119.673554] R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000003 [ 1119.673562] R13: 0000000000000000 R14: 00000000004db380 R15: 00000000ffffffff [ 1119.674728] kobject_add_internal failed for _ with -EEXIST, don't try to register things with the same name in the same directory. [ 1119.695393] gfs2: fsid=_: error -17 adding sysfs files [ 1119.856304] sysfs: cannot create duplicate filename '/fs/gfs2/_' [ 1119.897785] CPU: 1 PID: 21722 Comm: syz-executor4 Not tainted 4.20.0-next-20190103 #4 [ 1119.905788] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 1119.915164] Call Trace: [ 1119.917766] dump_stack+0x1db/0x2d0 [ 1119.921421] ? dump_stack_print_info.cold+0x20/0x20 [ 1119.926465] ? _raw_spin_unlock_irqrestore+0xa4/0xe0 [ 1119.931609] sysfs_warn_dup.cold+0x1c/0x31 [ 1119.935880] sysfs_create_dir_ns+0x2ce/0x330 [ 1119.940307] ? sysfs_create_mount_point+0xa0/0xa0 [ 1119.945162] ? do_raw_spin_trylock+0x270/0x270 [ 1119.949773] kobject_add_internal.cold+0x129/0x6d8 [ 1119.954756] ? kobj_ns_type_registered+0x60/0x60 [ 1119.959539] ? kfree_const+0x59/0x70 [ 1119.963267] ? rcu_read_lock_sched_held+0x110/0x130 [ 1119.968298] ? kfree+0x1fa/0x230 [ 1119.971683] ? kfree_const+0x5e/0x70 [ 1119.975415] kobject_init_and_add+0x101/0x160 [ 1119.979927] ? kobject_add_internal+0x4b0/0x4b0 [ 1119.984636] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 1119.990189] ? vsnprintf+0x368/0x1b10 [ 1119.994018] gfs2_sys_fs_add+0x210/0x500 [ 1119.998106] ? recover_store+0x1a0/0x1a0 [ 1120.002184] ? snprintf+0xbb/0xf0 [ 1120.005649] ? vsprintf+0x30/0x40 [ 1120.009117] ? set_blocksize+0x2bf/0x340 [ 1120.013189] ? memcpy+0x46/0x50 [ 1120.016486] fill_super+0x894/0x1990 [ 1120.020222] ? gfs2_online_uevent+0x2d0/0x2d0 [ 1120.024739] ? snprintf+0xbb/0xf0 [ 1120.028201] ? vsprintf+0x40/0x40 [ 1120.031671] ? ns_capable_common+0x141/0x170 [ 1120.036091] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 1120.042335] ? set_blocksize+0x2bf/0x340 [ 1120.046421] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 1120.051973] gfs2_mount+0x5db/0x6ee [ 1120.055614] ? fill_super+0x1990/0x1990 [ 1120.059625] ? vfs_parse_fs_string+0x1c5/0x2b0 [ 1120.064222] ? vfs_parse_fs_param+0x4b0/0x4b0 [ 1120.068729] ? fill_super+0x1990/0x1990 [ 1120.068744] legacy_get_tree+0xf2/0x200 [ 1120.068764] vfs_get_tree+0x123/0x450 [ 1120.068781] do_mount+0x1622/0x2fa0 [ 1120.080514] ? copy_mount_string+0x40/0x40 [ 1120.088344] ? kmem_cache_alloc_trace+0x354/0x760 [ 1120.093197] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 03:47:39 executing program 2: r0 = openat$proc_capi20(0xffffffffffffff9c, &(0x7f0000000140)='/proc/capi/capi20\x00', 0x2, 0x0) r1 = syz_genetlink_get_family_id$tipc(&(0x7f00000001c0)='TIPC\x00') sendmsg$TIPC_CMD_ENABLE_BEARER(r0, &(0x7f00000002c0)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x10000106}, 0xc, &(0x7f0000000280)={&(0x7f0000000240)={0x34, r1, 0x704, 0x70bd2a, 0x25dfdbfb, {{}, 0x0, 0x4101, 0x0, {0x18, 0x17, {0x1e, 0x2, @l2={'ib', 0x3a, 'lapb0\x00'}}}}, ["", "", "", "", "", ""]}, 0x34}, 0x1, 0x0, 0x0, 0x40}, 0x0) syz_mount_image$gfs2(&(0x7f0000000100)='gfs2\x00', &(0x7f0000000200)='./file0\x00', 0xfffffffffffffffc, 0x332, 0x0, 0x0, 0x0) socketpair$unix(0x1, 0x4000000000, 0x0, 0x0) r2 = syz_open_dev$amidi(&(0x7f0000000000)='/dev/amidi#\x00', 0xffff, 0x200) ioctl$VIDIOC_G_JPEGCOMP(r0, 0x808c563d, &(0x7f0000000540)) fcntl$notify(r2, 0x402, 0x4) fstat(r0, &(0x7f0000000080)={0x0, 0x0, 0x0, 0x0, 0x0}) stat(&(0x7f0000000300)='./file0\x00', &(0x7f0000000340)={0x0, 0x0, 0x0, 0x0, 0x0, 0x0}) fchownat(r0, &(0x7f0000000040)='./file0\x00', r3, r4, 0x1400) [ 1120.093213] ? copy_mount_options+0x30e/0x440 [ 1120.093233] ksys_mount+0xdb/0x150 [ 1120.093253] __x64_sys_mount+0xbe/0x150 [ 1120.093274] do_syscall_64+0x1a3/0x800 [ 1120.093293] ? syscall_return_slowpath+0x5f0/0x5f0 [ 1120.093310] ? prepare_exit_to_usermode+0x232/0x3b0 [ 1120.124638] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 1120.129496] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 1120.129509] RIP: 0033:0x45a93a [ 1120.129529] Code: b8 a6 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 ed 8c fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 0f 83 ca 8c fb ff c3 66 0f 1f 84 00 00 00 00 00 [ 1120.156786] RSP: 002b:00007ff699fe9a88 EFLAGS: 00000206 ORIG_RAX: 00000000000000a5 [ 1120.164495] RAX: ffffffffffffffda RBX: 00007ff699fe9b30 RCX: 000000000045a93a [ 1120.171760] RDX: 00007ff699fe9ad0 RSI: 0000000020000200 RDI: 00007ff699fe9af0 [ 1120.179022] RBP: 0000000020000200 R08: 00007ff699fe9b30 R09: 00007ff699fe9ad0 [ 1120.186294] R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000003 03:47:39 executing program 0: socketpair$unix(0x1, 0x1, 0x0, &(0x7f0000000440)={0xffffffffffffffff, 0xffffffffffffffff}) ioctl$PERF_EVENT_IOC_ENABLE(r0, 0x8912, 0x400200) r1 = openat$kvm(0xffffffffffffff9c, &(0x7f00000000c0)='/dev/kvm\x00', 0x0, 0x0) openat$dlm_monitor(0xffffffffffffff9c, &(0x7f0000000340)='/dev/dlm-monitor\x00', 0x0, 0x0) r2 = ioctl$KVM_CREATE_VM(r1, 0xae01, 0x0) r3 = ioctl$KVM_CREATE_VCPU(r2, 0xae41, 0x0) syz_kvm_setup_cpu$x86(r2, 0xffffffffffffffff, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x0, 0x0, 0x0) syz_kvm_setup_cpu$x86(0xffffffffffffffff, r3, &(0x7f0000000000/0x18000)=nil, &(0x7f00000001c0)=[@text64={0x40, &(0x7f0000000040)="b9800000c00f3235001000000f30f24c0f2c49e8426dc4027d3493b80800003626660f7e676d660f1678b06cc403f9dfbeb70000000bc7442400f5000000c744240284d178bcff1c24f2f347dbe1", 0x4e}], 0x1, 0x48, 0x0, 0x0) pipe2(&(0x7f0000000000), 0x0) ioctl$KVM_RUN(r3, 0xae80, 0x1a0ffffffff) [ 1120.193562] R13: 0000000000000000 R14: 00000000004db380 R15: 00000000ffffffff 03:47:39 executing program 2: syz_mount_image$gfs2(&(0x7f0000000140)='gfs2\x00', &(0x7f0000000200)='./file0\x00', 0x0, 0x0, 0x0, 0x0, 0x0) ioctl$KVM_CREATE_DEVICE(0xffffffffffffff9c, 0xc00caee0, &(0x7f00000001c0)={0x2, 0xffffffffffffff9c, 0x1}) r1 = openat$sequencer2(0xffffffffffffff9c, &(0x7f0000000240)='/dev/sequencer2\x00', 0x2000, 0x0) r2 = dup2(r1, r0) mkdirat$cgroup(r2, &(0x7f0000000180)='syz0\x00', 0x1ff) socketpair$unix(0x1, 0x0, 0x0, 0x0) r3 = openat$mixer(0xffffffffffffff9c, &(0x7f0000000000)='/dev/mixer\x00', 0x80000, 0x0) ioctl$KVM_GET_IRQCHIP(r3, 0xc208ae62, &(0x7f0000000040)={0x0, 0x0, @ioapic}) [ 1120.250422] kobject_add_internal failed for _ with -EEXIST, don't try to register things with the same name in the same directory. 03:47:40 executing program 3: syz_mount_image$gfs2(&(0x7f0000000140)='gfs2\x00', &(0x7f0000000200)='./file0\x00', 0x0, 0x0, 0x0, 0x0, &(0x7f00000003c0)={[{@locktable={'locktable', 0x3d, '/'}}, {@lockproto_nolock='lockproto=lock_nolock'}]}) 03:47:40 executing program 5: r0 = socket$inet(0x2, 0x4000000000000001, 0x0) setsockopt$inet_tcp_int(r0, 0x6, 0x80000000000002, &(0x7f0000000040)=0x74, 0x4) bind$inet(r0, &(0x7f0000000180)={0x2, 0x4e23, @multicast1}, 0x10) sendto$inet(r0, 0x0, 0x0, 0x200007fd, &(0x7f0000e68000)={0x2, 0x4e23, @local}, 0x10) write$binfmt_elf64(r0, &(0x7f00000012c0)=ANY=[@ANYBLOB="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"], 0x209) mmap(&(0x7f0000000000/0xb36000)=nil, 0xb36000, 0x3, 0x8031, 0xffffffffffffffff, 0x0) sendmmsg$inet_sctp(r0, 0x0, 0x0, 0x0) [ 1120.345701] gfs2: fsid=_: error -17 adding sysfs files 03:47:40 executing program 1: r0 = openat$kvm(0xffffffffffffff9c, &(0x7f0000000140)='/dev/kvm\x00', 0x0, 0x0) r1 = ioctl$KVM_CREATE_VM(r0, 0xae01, 0x0) r2 = ioctl$KVM_CREATE_VCPU(r1, 0xae41, 0x0) ioctl$KVM_SET_USER_MEMORY_REGION(r1, 0x4020ae46, &(0x7f0000000400)={0x0, 0x3, 0x0, 0x2000, &(0x7f0000000000/0x2000)=nil}) syz_kvm_setup_cpu$x86(r1, 0xffffffffffffffff, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x0, 0x0, 0xfffffffffffffe78) sendmmsg$unix(0xffffffffffffffff, &(0x7f0000002780)=[{0x0, 0x0, &(0x7f0000001d00)=[{&(0x7f0000000bc0)="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", 0x3c5}], 0x1}], 0x1, 0x0) ioctl$KVM_REGISTER_COALESCED_MMIO(r1, 0x4010ae67, &(0x7f00000000c0)={0x0, 0x15200}) syz_kvm_setup_cpu$x86(0xffffffffffffffff, r2, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x8, 0x0, 0x0) ioctl$KVM_RUN(r2, 0xae80, 0x5500) [ 1120.463620] gfs2: not a GFS2 filesystem 03:47:40 executing program 4: syz_mount_image$gfs2(&(0x7f0000000140)='gfs2\x00', &(0x7f0000000200)='./file0\x00', 0x125ea, 0x0, 0x0, 0x0, &(0x7f00000003c0)={[{@locktable={'locktable', 0x3d, '/'}}, {@lockproto_nolock='lockproto=lock_nolock'}]}) socketpair$unix(0x1, 0x1, 0x0, &(0x7f0000000180)) [ 1120.525281] gfs2: fsid=_: Trying to join cluster "lock_nolock", "_" [ 1120.532213] gfs2: fsid=_: Now mounting FS... [ 1120.575354] gfs2: not a GFS2 filesystem [ 1120.584998] gfs2: not a GFS2 filesystem [ 1120.607463] gfs2: fsid=_: can't read superblock 03:47:40 executing program 0: socketpair$unix(0x1, 0x1, 0x0, &(0x7f0000000440)={0xffffffffffffffff, 0xffffffffffffffff}) ioctl$PERF_EVENT_IOC_ENABLE(r0, 0x8912, 0x400200) r1 = openat$kvm(0xffffffffffffff9c, &(0x7f00000000c0)='/dev/kvm\x00', 0x0, 0x0) openat$dlm_monitor(0xffffffffffffff9c, &(0x7f0000000340)='/dev/dlm-monitor\x00', 0x0, 0x0) r2 = ioctl$KVM_CREATE_VM(r1, 0xae01, 0x0) r3 = ioctl$KVM_CREATE_VCPU(r2, 0xae41, 0x0) syz_kvm_setup_cpu$x86(r2, 0xffffffffffffffff, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x0, 0x0, 0x0) syz_kvm_setup_cpu$x86(0xffffffffffffffff, r3, &(0x7f0000000000/0x18000)=nil, &(0x7f00000001c0)=[@text64={0x40, &(0x7f0000000040)="b9800000c00f3235001000000f30f24c0f2c49e8426dc4027d3493b80800003626660f7e676d660f1678b06cc403f9dfbeb70000000bc7442400f5000000c744240284d178bcff1c24f2f347dbe1", 0x4e}], 0x1, 0x48, 0x0, 0x0) pipe2(&(0x7f0000000000), 0x0) ioctl$KVM_RUN(r3, 0xae80, 0x2900000000000000) [ 1120.621121] gfs2: fsid=_: can't read superblock: -22 03:47:40 executing program 2: syz_mount_image$gfs2(&(0x7f0000000140)='gfs2\x00', &(0x7f0000000200)='./file0\x00', 0x0, 0x0, 0x0, 0x0, 0x0) socketpair$unix(0x1, 0x0, 0x0, 0x0) arch_prctl$ARCH_MAP_VDSO_64(0x2003, 0x0) r0 = syz_open_dev$dspn(&(0x7f0000000000)='/dev/dsp#\x00', 0xf9, 0x80001) getsockopt$sock_timeval(r0, 0x1, 0x15, &(0x7f00000000c0), &(0x7f0000000100)=0x10) r1 = openat$dlm_monitor(0xffffffffffffff9c, &(0x7f0000000040)='/dev/dlm-monitor\x00', 0x2, 0x0) ioctl$sock_inet_SIOCSIFADDR(r1, 0x8916, &(0x7f0000000180)={'bpq0\x00', {0x2, 0x4e22, @loopback}}) ioctl$KVM_HYPERV_EVENTFD(r0, 0x4018aebd, &(0x7f0000000080)={0x3, r1, 0x1}) [ 1120.687424] sysfs: cannot create duplicate filename '/fs/gfs2/_' [ 1120.737187] CPU: 0 PID: 21791 Comm: syz-executor4 Not tainted 4.20.0-next-20190103 #4 [ 1120.745181] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 1120.745188] Call Trace: [ 1120.745213] dump_stack+0x1db/0x2d0 [ 1120.745239] ? dump_stack_print_info.cold+0x20/0x20 [ 1120.745264] ? _raw_spin_unlock_irqrestore+0xa4/0xe0 [ 1120.770934] sysfs_warn_dup.cold+0x1c/0x31 [ 1120.775186] sysfs_create_dir_ns+0x2ce/0x330 [ 1120.779620] ? sysfs_create_mount_point+0xa0/0xa0 [ 1120.779639] ? do_raw_spin_trylock+0x270/0x270 [ 1120.779671] kobject_add_internal.cold+0x129/0x6d8 [ 1120.779692] ? kobj_ns_type_registered+0x60/0x60 [ 1120.798793] ? kfree_const+0x59/0x70 [ 1120.802515] ? rcu_read_lock_sched_held+0x110/0x130 [ 1120.807540] ? kfree+0x1fa/0x230 [ 1120.810919] ? kfree_const+0x5e/0x70 [ 1120.810942] kobject_init_and_add+0x101/0x160 [ 1120.810963] ? kobject_add_internal+0x4b0/0x4b0 [ 1120.823873] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 1120.829421] ? vsnprintf+0x368/0x1b10 [ 1120.833239] gfs2_sys_fs_add+0x210/0x500 [ 1120.837302] ? recover_store+0x1a0/0x1a0 [ 1120.841382] ? snprintf+0xbb/0xf0 [ 1120.844835] ? vsprintf+0x30/0x40 [ 1120.848294] ? set_blocksize+0x2bf/0x340 [ 1120.852365] ? memcpy+0x46/0x50 [ 1120.855655] fill_super+0x894/0x1990 [ 1120.859388] ? gfs2_online_uevent+0x2d0/0x2d0 [ 1120.863889] ? snprintf+0xbb/0xf0 [ 1120.867345] ? vsprintf+0x40/0x40 [ 1120.870806] ? ns_capable_common+0x141/0x170 [ 1120.875219] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 1120.880236] ? set_blocksize+0x2bf/0x340 [ 1120.884301] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 1120.889840] gfs2_mount+0x5db/0x6ee [ 1120.893493] ? fill_super+0x1990/0x1990 [ 1120.897499] ? vfs_parse_fs_string+0x1c5/0x2b0 [ 1120.902092] ? vfs_parse_fs_param+0x4b0/0x4b0 [ 1120.906602] ? fill_super+0x1990/0x1990 [ 1120.910588] legacy_get_tree+0xf2/0x200 [ 1120.914567] vfs_get_tree+0x123/0x450 [ 1120.918372] do_mount+0x1622/0x2fa0 [ 1120.922012] ? copy_mount_string+0x40/0x40 [ 1120.926252] ? kmem_cache_alloc_trace+0x354/0x760 [ 1120.931103] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 1120.936640] ? copy_mount_options+0x30e/0x440 [ 1120.941145] ksys_mount+0xdb/0x150 [ 1120.944692] __x64_sys_mount+0xbe/0x150 [ 1120.948677] do_syscall_64+0x1a3/0x800 [ 1120.952569] ? syscall_return_slowpath+0x5f0/0x5f0 [ 1120.957515] ? prepare_exit_to_usermode+0x232/0x3b0 [ 1120.962541] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 1120.967395] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 1120.972580] RIP: 0033:0x45a93a [ 1120.975775] Code: b8 a6 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 ed 8c fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 0f 83 ca 8c fb ff c3 66 0f 1f 84 00 00 00 00 00 [ 1120.994673] RSP: 002b:00007ff699fe9a88 EFLAGS: 00000206 ORIG_RAX: 00000000000000a5 [ 1121.002376] RAX: ffffffffffffffda RBX: 00007ff699fe9b30 RCX: 000000000045a93a [ 1121.009640] RDX: 00007ff699fe9ad0 RSI: 0000000020000200 RDI: 00007ff699fe9af0 [ 1121.016908] RBP: 0000000020000200 R08: 00007ff699fe9b30 R09: 00007ff699fe9ad0 [ 1121.024175] R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000003 [ 1121.031466] R13: 0000000000000000 R14: 00000000004db380 R15: 00000000ffffffff 03:47:40 executing program 1: r0 = openat$kvm(0xffffffffffffff9c, &(0x7f0000000140)='/dev/kvm\x00', 0x0, 0x0) r1 = ioctl$KVM_CREATE_VM(r0, 0xae01, 0x0) r2 = ioctl$KVM_CREATE_VCPU(r1, 0xae41, 0x0) ioctl$KVM_SET_USER_MEMORY_REGION(r1, 0x4020ae46, &(0x7f0000000400)={0x0, 0x3, 0x0, 0x2000, &(0x7f0000000000/0x2000)=nil}) syz_kvm_setup_cpu$x86(r1, 0xffffffffffffffff, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x0, 0x0, 0xfffffffffffffe78) sendmmsg$unix(0xffffffffffffffff, &(0x7f0000002780)=[{0x0, 0x0, &(0x7f0000001d00)=[{&(0x7f0000000bc0)="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", 0x3c5}], 0x1}], 0x1, 0x0) ioctl$KVM_REGISTER_COALESCED_MMIO(r1, 0x4010ae67, &(0x7f00000000c0)={0x0, 0x15200}) syz_kvm_setup_cpu$x86(0xffffffffffffffff, r2, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x8, 0x0, 0x0) ioctl$KVM_RUN(r2, 0xae80, 0x1300) [ 1121.096791] kobject_add_internal failed for _ with -EEXIST, don't try to register things with the same name in the same directory. [ 1121.117038] gfs2: fsid=_: error -17 adding sysfs files [ 1121.284982] gfs2: fsid=_: Trying to join cluster "lock_nolock", "_" [ 1121.291446] gfs2: fsid=_: Now mounting FS... [ 1121.298980] gfs2: not a GFS2 filesystem 03:47:41 executing program 3: syz_mount_image$gfs2(&(0x7f0000000140)='gfs2\x00', &(0x7f0000000200)='./file0\x00', 0x0, 0x0, 0x0, 0x0, &(0x7f00000003c0)={[{@locktable={'locktable', 0x3d, '/'}}, {@lockproto_nolock='lockproto=lock_nolock'}]}) 03:47:41 executing program 0: socketpair$unix(0x1, 0x1, 0x0, &(0x7f0000000440)={0xffffffffffffffff, 0xffffffffffffffff}) ioctl$PERF_EVENT_IOC_ENABLE(r0, 0x8912, 0x400200) r1 = openat$kvm(0xffffffffffffff9c, &(0x7f00000000c0)='/dev/kvm\x00', 0x0, 0x0) openat$dlm_monitor(0xffffffffffffff9c, &(0x7f0000000340)='/dev/dlm-monitor\x00', 0x0, 0x0) r2 = ioctl$KVM_CREATE_VM(r1, 0xae01, 0x0) r3 = ioctl$KVM_CREATE_VCPU(r2, 0xae41, 0x0) syz_kvm_setup_cpu$x86(r2, 0xffffffffffffffff, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x0, 0x0, 0x0) syz_kvm_setup_cpu$x86(0xffffffffffffffff, r3, &(0x7f0000000000/0x18000)=nil, &(0x7f00000001c0)=[@text64={0x40, &(0x7f0000000040)="b9800000c00f3235001000000f30f24c0f2c49e8426dc4027d3493b80800003626660f7e676d660f1678b06cc403f9dfbeb70000000bc7442400f5000000c744240284d178bcff1c24f2f347dbe1", 0x4e}], 0x1, 0x48, 0x0, 0x0) pipe2(&(0x7f0000000000), 0x0) ioctl$KVM_RUN(r3, 0xae80, 0x1100000000000000) [ 1121.383579] gfs2: not a GFS2 filesystem [ 1121.417421] gfs2: fsid=_: can't read superblock [ 1121.430308] gfs2: not a GFS2 filesystem [ 1121.463908] gfs2: fsid=_: can't read superblock: -22 [ 1121.498244] sysfs: cannot create duplicate filename '/fs/gfs2/_' [ 1121.513198] CPU: 1 PID: 21822 Comm: syz-executor3 Not tainted 4.20.0-next-20190103 #4 [ 1121.521204] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 1121.531085] Call Trace: [ 1121.533693] dump_stack+0x1db/0x2d0 [ 1121.537348] ? dump_stack_print_info.cold+0x20/0x20 [ 1121.542388] ? _raw_spin_unlock_irqrestore+0xa4/0xe0 [ 1121.547512] sysfs_warn_dup.cold+0x1c/0x31 [ 1121.551761] sysfs_create_dir_ns+0x2ce/0x330 [ 1121.556181] ? sysfs_create_mount_point+0xa0/0xa0 [ 1121.561031] ? do_raw_spin_trylock+0x270/0x270 [ 1121.565655] kobject_add_internal.cold+0x129/0x6d8 [ 1121.570604] ? kobj_ns_type_registered+0x60/0x60 [ 1121.575363] ? kfree_const+0x59/0x70 [ 1121.579085] ? rcu_read_lock_sched_held+0x110/0x130 [ 1121.584107] ? kfree+0x1fa/0x230 [ 1121.587479] ? kfree_const+0x5e/0x70 [ 1121.591203] kobject_init_and_add+0x101/0x160 [ 1121.595706] ? kobject_add_internal+0x4b0/0x4b0 [ 1121.600382] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 1121.605923] ? vsnprintf+0x368/0x1b10 [ 1121.609755] gfs2_sys_fs_add+0x210/0x500 [ 1121.613829] ? recover_store+0x1a0/0x1a0 [ 1121.617918] ? snprintf+0xbb/0xf0 [ 1121.621373] ? vsprintf+0x30/0x40 [ 1121.624838] ? set_blocksize+0x2bf/0x340 [ 1121.628904] ? memcpy+0x46/0x50 [ 1121.632194] fill_super+0x894/0x1990 [ 1121.635926] ? gfs2_online_uevent+0x2d0/0x2d0 [ 1121.640441] ? snprintf+0xbb/0xf0 [ 1121.643907] ? vsprintf+0x40/0x40 [ 1121.647370] ? ns_capable_common+0x141/0x170 [ 1121.651779] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 1121.656804] ? set_blocksize+0x2bf/0x340 [ 1121.660875] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 1121.666415] gfs2_mount+0x5db/0x6ee [ 1121.670059] ? fill_super+0x1990/0x1990 [ 1121.674088] ? vfs_parse_fs_string+0x1c5/0x2b0 [ 1121.678674] ? vfs_parse_fs_param+0x4b0/0x4b0 [ 1121.683174] ? fill_super+0x1990/0x1990 [ 1121.687175] legacy_get_tree+0xf2/0x200 [ 1121.691180] vfs_get_tree+0x123/0x450 [ 1121.694993] do_mount+0x1622/0x2fa0 [ 1121.698637] ? copy_mount_string+0x40/0x40 [ 1121.702883] ? kmem_cache_alloc_trace+0x354/0x760 [ 1121.707734] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 1121.713289] ? _copy_from_user+0xdd/0x150 [ 1121.717445] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 1121.722990] ? copy_mount_options+0x30e/0x440 [ 1121.727504] ksys_mount+0xdb/0x150 [ 1121.731066] __x64_sys_mount+0xbe/0x150 [ 1121.735061] do_syscall_64+0x1a3/0x800 [ 1121.738969] ? syscall_return_slowpath+0x5f0/0x5f0 [ 1121.743920] ? prepare_exit_to_usermode+0x232/0x3b0 [ 1121.748944] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 1121.753798] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 1121.759003] RIP: 0033:0x45a93a [ 1121.762204] Code: b8 a6 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 ed 8c fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 0f 83 ca 8c fb ff c3 66 0f 1f 84 00 00 00 00 00 [ 1121.781110] RSP: 002b:00007fdbfe5d2a88 EFLAGS: 00000206 ORIG_RAX: 00000000000000a5 [ 1121.788843] RAX: ffffffffffffffda RBX: 00007fdbfe5d2b30 RCX: 000000000045a93a 03:47:41 executing program 1: r0 = openat$kvm(0xffffffffffffff9c, &(0x7f0000000140)='/dev/kvm\x00', 0x0, 0x0) r1 = ioctl$KVM_CREATE_VM(r0, 0xae01, 0x0) r2 = ioctl$KVM_CREATE_VCPU(r1, 0xae41, 0x0) ioctl$KVM_SET_USER_MEMORY_REGION(r1, 0x4020ae46, &(0x7f0000000400)={0x0, 0x3, 0x0, 0x2000, &(0x7f0000000000/0x2000)=nil}) syz_kvm_setup_cpu$x86(r1, 0xffffffffffffffff, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x0, 0x0, 0xfffffffffffffe78) sendmmsg$unix(0xffffffffffffffff, &(0x7f0000002780)=[{0x0, 0x0, &(0x7f0000001d00)=[{&(0x7f0000000bc0)="b474ac0450ac6a2ff5ba4c1a19990e818d6fb646a5739e09c636550fdd39d0316e215a5a9427ac426da0b375844fb7f5ee5130d0b57cdab9af6f5f0d39c1787ec9ecde6263664c6a9859b7a0c4cbc99a05184da950f370cf65a18bff7975c0c12ca4227baa2164d031a5472d7f581c6f7eedd103d8fc89b6b4b52e5d3da0817eec8c57f722e356068b99a056ab6a693b9eebe38d75170491e07f9f69573b02b1a048f29e39cd24fed99e8606ffcbe4f617f48370ec62bd327cdfb9da8e8fef232b2e8f8f6868bb1781eab4c294befd65d9a336123bd34be8f256b5fc0420aa6e930f292a9a06365daaebd0bcaaaf5e0c12167aad0c62a48666383ee58b37df8077c5d2d5298d5247e240a78ff2543147129775f6d4a872df80d9da66c2a0a169df65141cbe88b1e280d60f6e11b25a0b5bb1bdd430378761d547f3ff7e42cc84c849e66004e30905d908e352a53f95bca84a68a6ce5ee82b69c939a196a7060bee28d8dee1ed52ae04b228bedf9302df44cc957780e42c2784d18e3695ee5e73dbe385331494af3cbcf8952e85469e9566c32692c0ceae8dab7b9553b5e8aa66edbad2ed828ba2a665a48a2822d9dc538863aea705c926c5a12fee84db545a36a13281e09e82c06211cc195cb4409bedfb7cf22f6c01fba9720bc4f447da73bb95bab6c056ce51bbc9d5b6622c54152e853f9639d2db2a5992e0f0e8f77a2e5efcfd139869cbdc902622399035d6ab8c22e33605be6850356be97ac05588720e1e215fbf5cb6633f0894e0a4dbd28708cac77792a31b00f47d18cebcb9114f1b0ffd66b587c5f9ba086fc530c6a0ac561068de208f18a3b6adc47f04bd63bd4a31544eb953398ddee5b5e4533aa529947aa46e7e517ff719e559c106f8afc570019f272a9f2d2699c7384612854de44dc40bb33aafee4e5fab1c06ceeffec56782452589f80c3946e6631c591e7f82af7e3a6422e0f35b0847f0a3049ee29b09f8aadf59c96a99576be85d6ddcf8c4d82373355add27397517402a56fd36bf877a53731413c30786431262705fb01511a778482cd85b60323b683e0e9d2f06b57678ddcf06f6da03f818e7f0b4db7045527f6e00fa26fe586fe0fcc72024fad6bab1739f6d7980d21f1fac0e7f53ee4cb254349b93a89f5695be91e5c586411b18f3f11298d979abdf4dd4796b181e623189aa73182c4c5ff346545168a520241ce23e08ade26085f654537258efaacfe1a64b2261c5180eb7c01ca6f4dc0f08f98ec12c06036278eff4c8d3b852bb2022be745861268ffbe0bb37c45452d2ac97aa6cb81db9f428688e6eab0e85ba6eb2eaecf4e8e137a2101f04b201258a71d857194610", 0x3c5}], 0x1}], 0x1, 0x0) ioctl$KVM_REGISTER_COALESCED_MMIO(r1, 0x4010ae67, &(0x7f00000000c0)={0x0, 0x15200}) syz_kvm_setup_cpu$x86(0xffffffffffffffff, r2, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x8, 0x0, 0x0) ioctl$KVM_RUN(r2, 0xae80, 0x7) [ 1121.796115] RDX: 00007fdbfe5d2ad0 RSI: 0000000020000200 RDI: 00007fdbfe5d2af0 [ 1121.803405] RBP: 0000000020000200 R08: 00007fdbfe5d2b30 R09: 00007fdbfe5d2ad0 [ 1121.810687] R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000003 [ 1121.817952] R13: 0000000000000000 R14: 00000000004db380 R15: 00000000ffffffff [ 1121.838170] kobject_add_internal failed for _ with -EEXIST, don't try to register things with the same name in the same directory. 03:47:41 executing program 5: r0 = socket$inet(0x2, 0x4000000000000001, 0x0) setsockopt$inet_tcp_int(r0, 0x6, 0x80000000000002, &(0x7f0000000040)=0x74, 0x4) bind$inet(r0, &(0x7f0000000180)={0x2, 0x4e23, @multicast1}, 0x10) sendto$inet(r0, 0x0, 0x0, 0x200007fd, &(0x7f0000e68000)={0x2, 0x4e23, @local}, 0x10) write$binfmt_elf64(r0, &(0x7f00000012c0)=ANY=[@ANYBLOB="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"], 0x209) mmap(&(0x7f0000000000/0xb36000)=nil, 0xb36000, 0x3, 0x8031, 0xffffffffffffffff, 0x0) sendmmsg$inet_sctp(r0, 0x0, 0x0, 0x0) 03:47:41 executing program 2: open(&(0x7f0000000000)='./file0\x00', 0x404000, 0x100) socketpair$unix(0x1, 0x0, 0x0, 0x0) [ 1121.919651] gfs2: fsid=_: error -17 adding sysfs files 03:47:41 executing program 2: syz_mount_image$gfs2(&(0x7f0000000140)='gfs2\x00', &(0x7f0000000200)='./file0\x00', 0x0, 0x0, 0x0, 0x0, 0x0) socketpair$unix(0x1, 0x0, 0x0, 0x0) syz_init_net_socket$nfc_llcp(0x27, 0x3, 0x1) 03:47:41 executing program 4: syz_mount_image$gfs2(&(0x7f0000000140)='gfs2\x00', &(0x7f0000000200)='./file0\x00', 0x125de, 0x0, 0x0, 0x0, &(0x7f00000003c0)={[{@locktable={'locktable', 0x3d, '/'}}, {@lockproto_nolock='lockproto=lock_nolock'}]}) socketpair$unix(0x1, 0x1, 0x0, &(0x7f0000000180)) 03:47:41 executing program 1: r0 = openat$kvm(0xffffffffffffff9c, &(0x7f0000000140)='/dev/kvm\x00', 0x0, 0x0) r1 = ioctl$KVM_CREATE_VM(r0, 0xae01, 0x0) r2 = ioctl$KVM_CREATE_VCPU(r1, 0xae41, 0x0) ioctl$KVM_SET_USER_MEMORY_REGION(r1, 0x4020ae46, &(0x7f0000000400)={0x0, 0x3, 0x0, 0x2000, &(0x7f0000000000/0x2000)=nil}) syz_kvm_setup_cpu$x86(r1, 0xffffffffffffffff, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x0, 0x0, 0xfffffffffffffe78) sendmmsg$unix(0xffffffffffffffff, &(0x7f0000002780)=[{0x0, 0x0, &(0x7f0000001d00)=[{&(0x7f0000000bc0)="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", 0x3c5}], 0x1}], 0x1, 0x0) ioctl$KVM_REGISTER_COALESCED_MMIO(r1, 0x4010ae67, &(0x7f00000000c0)={0x0, 0x15200}) syz_kvm_setup_cpu$x86(0xffffffffffffffff, r2, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x8, 0x0, 0x0) ioctl$KVM_RUN(r2, 0xae80, 0xd) 03:47:41 executing program 0: socketpair$unix(0x1, 0x1, 0x0, &(0x7f0000000440)={0xffffffffffffffff, 0xffffffffffffffff}) ioctl$PERF_EVENT_IOC_ENABLE(r0, 0x8912, 0x400200) r1 = openat$kvm(0xffffffffffffff9c, &(0x7f00000000c0)='/dev/kvm\x00', 0x0, 0x0) openat$dlm_monitor(0xffffffffffffff9c, &(0x7f0000000340)='/dev/dlm-monitor\x00', 0x0, 0x0) r2 = ioctl$KVM_CREATE_VM(r1, 0xae01, 0x0) r3 = ioctl$KVM_CREATE_VCPU(r2, 0xae41, 0x0) syz_kvm_setup_cpu$x86(r2, 0xffffffffffffffff, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x0, 0x0, 0x0) syz_kvm_setup_cpu$x86(0xffffffffffffffff, r3, &(0x7f0000000000/0x18000)=nil, &(0x7f00000001c0)=[@text64={0x40, &(0x7f0000000040)="b9800000c00f3235001000000f30f24c0f2c49e8426dc4027d3493b80800003626660f7e676d660f1678b06cc403f9dfbeb70000000bc7442400f5000000c744240284d178bcff1c24f2f347dbe1", 0x4e}], 0x1, 0x48, 0x0, 0x0) pipe2(&(0x7f0000000000), 0x0) ioctl$KVM_RUN(r3, 0xae80, 0x11) [ 1122.242961] gfs2: not a GFS2 filesystem [ 1122.258845] gfs2: fsid=_: Trying to join cluster "lock_nolock", "_" [ 1122.310683] gfs2: fsid=_: Now mounting FS... [ 1122.330925] gfs2: not a GFS2 filesystem [ 1122.360259] gfs2: fsid=_: can't read superblock [ 1122.361551] gfs2: not a GFS2 filesystem [ 1122.409809] gfs2: fsid=_: can't read superblock: -22 03:47:42 executing program 2: r0 = creat(&(0x7f00000000c0)='./file0\x00', 0x10) mkdirat(r0, &(0x7f0000000100)='./file0\x00', 0xc0) r1 = syz_open_dev$radio(&(0x7f0000000000)='/dev/radio#\x00', 0x2, 0x2) getsockopt$inet_dccp_int(r1, 0x21, 0x0, &(0x7f0000000040), &(0x7f0000000080)=0x4) syz_mount_image$gfs2(&(0x7f0000000140)='gfs2\x00', &(0x7f0000000200)='./file0\x00', 0x0, 0x0, 0x0, 0x0, 0x0) socketpair$unix(0x1, 0x0, 0x0, 0x0) 03:47:42 executing program 1: r0 = openat$kvm(0xffffffffffffff9c, &(0x7f0000000140)='/dev/kvm\x00', 0x0, 0x0) r1 = ioctl$KVM_CREATE_VM(r0, 0xae01, 0x0) r2 = ioctl$KVM_CREATE_VCPU(r1, 0xae41, 0x0) ioctl$KVM_SET_USER_MEMORY_REGION(r1, 0x4020ae46, &(0x7f0000000400)={0x0, 0x3, 0x0, 0x2000, &(0x7f0000000000/0x2000)=nil}) syz_kvm_setup_cpu$x86(r1, 0xffffffffffffffff, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x0, 0x0, 0xfffffffffffffe78) sendmmsg$unix(0xffffffffffffffff, &(0x7f0000002780)=[{0x0, 0x0, &(0x7f0000001d00)=[{&(0x7f0000000bc0)="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", 0x3c5}], 0x1}], 0x1, 0x0) ioctl$KVM_REGISTER_COALESCED_MMIO(r1, 0x4010ae67, &(0x7f00000000c0)={0x0, 0x15200}) syz_kvm_setup_cpu$x86(0xffffffffffffffff, r2, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x8, 0x0, 0x0) ioctl$KVM_RUN(r2, 0xae80, 0xec0f0000000000) [ 1122.573222] gfs2: not a GFS2 filesystem 03:47:42 executing program 0: socketpair$unix(0x1, 0x1, 0x0, &(0x7f0000000440)={0xffffffffffffffff, 0xffffffffffffffff}) ioctl$PERF_EVENT_IOC_ENABLE(r0, 0x8912, 0x400200) r1 = openat$kvm(0xffffffffffffff9c, &(0x7f00000000c0)='/dev/kvm\x00', 0x0, 0x0) openat$dlm_monitor(0xffffffffffffff9c, &(0x7f0000000340)='/dev/dlm-monitor\x00', 0x0, 0x0) r2 = ioctl$KVM_CREATE_VM(r1, 0xae01, 0x0) r3 = ioctl$KVM_CREATE_VCPU(r2, 0xae41, 0x0) syz_kvm_setup_cpu$x86(r2, 0xffffffffffffffff, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x0, 0x0, 0x0) syz_kvm_setup_cpu$x86(0xffffffffffffffff, r3, &(0x7f0000000000/0x18000)=nil, &(0x7f00000001c0)=[@text64={0x40, &(0x7f0000000040)="b9800000c00f3235001000000f30f24c0f2c49e8426dc4027d3493b80800003626660f7e676d660f1678b06cc403f9dfbeb70000000bc7442400f5000000c744240284d178bcff1c24f2f347dbe1", 0x4e}], 0x1, 0x48, 0x0, 0x0) pipe2(&(0x7f0000000000), 0x0) ioctl$KVM_RUN(r3, 0xae80, 0x8000a0ffffffff) 03:47:42 executing program 3: syz_mount_image$gfs2(&(0x7f0000000140)='gfs2\xff', &(0x7f0000000200)='./file0\x00', 0x0, 0x0, 0x0, 0x0, &(0x7f00000003c0)={[{@locktable={'locktable', 0x3d, '/'}}, {@lockproto_nolock='lockproto=lock_nolock'}]}) 03:47:42 executing program 1: r0 = openat$kvm(0xffffffffffffff9c, &(0x7f0000000140)='/dev/kvm\x00', 0x0, 0x0) r1 = ioctl$KVM_CREATE_VM(r0, 0xae01, 0x0) r2 = ioctl$KVM_CREATE_VCPU(r1, 0xae41, 0x0) ioctl$KVM_SET_USER_MEMORY_REGION(r1, 0x4020ae46, &(0x7f0000000400)={0x0, 0x3, 0x0, 0x2000, &(0x7f0000000000/0x2000)=nil}) syz_kvm_setup_cpu$x86(r1, 0xffffffffffffffff, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x0, 0x0, 0xfffffffffffffe78) sendmmsg$unix(0xffffffffffffffff, &(0x7f0000002780)=[{0x0, 0x0, &(0x7f0000001d00)=[{&(0x7f0000000bc0)="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", 0x3c5}], 0x1}], 0x1, 0x0) ioctl$KVM_REGISTER_COALESCED_MMIO(r1, 0x4010ae67, &(0x7f00000000c0)={0x0, 0x15200}) syz_kvm_setup_cpu$x86(0xffffffffffffffff, r2, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x8, 0x0, 0x0) ioctl$KVM_RUN(r2, 0xae80, 0x1500000000000000) [ 1122.792242] gfs2: fsid=_: Trying to join cluster "lock_nolock", "_" [ 1122.819184] gfs2: not a GFS2 filesystem [ 1122.831393] gfs2: fsid=_: Now mounting FS... [ 1122.861137] gfs2: not a GFS2 filesystem [ 1122.894090] gfs2: fsid=_: can't read superblock [ 1122.915557] gfs2: fsid=_: can't read superblock: -22 03:47:42 executing program 2: syz_mount_image$gfs2(&(0x7f0000000140)='gfs2\x00', &(0x7f0000000200)='./file0\x00', 0x80000001, 0xffffff5e, 0x0, 0x0, 0x0) r0 = openat$hwrng(0xffffffffffffff9c, &(0x7f0000000440)='/dev/hwrng\x00', 0x40000, 0x0) write$RDMA_USER_CM_CMD_CREATE_ID(0xffffffffffffffff, &(0x7f00000006c0)={0x0, 0x18, 0xfa00, {0x0, &(0x7f0000000680)={0xffffffffffffffff}, 0x13f, 0x6}}, 0x20) write$RDMA_USER_CM_CMD_QUERY_ROUTE(r0, &(0x7f0000000700)={0x5, 0x10, 0xfa00, {&(0x7f0000000480), r1, 0x1}}, 0x18) socketpair$unix(0x1, 0x3ffffd, 0x0, 0x0) r2 = dup(0xffffffffffffffff) accept4$rose(r2, &(0x7f0000000240)=@full={0xb, @dev, @bcast, 0x0, [@default, @null, @default, @remote, @default, @bcast]}, &(0x7f00000003c0)=0x40, 0x80800) execve(&(0x7f0000000000)='./file0\x00', &(0x7f00000001c0)=[&(0x7f0000000040)='gfs2\x00', &(0x7f0000000080)='vboxnet1cgroup)^selinuxnodevkeyringcpusetuser[[*\x00', &(0x7f0000000740)='/dev/hwrng\x00', &(0x7f0000000100)='gfs2\x00', &(0x7f0000000180)='gfs2\x00'], &(0x7f0000000380)=[&(0x7f0000000400)='v\x89\xf2qs\xa5\x9f^u\xfb~}h\\\x8e\xe3\xf6m\xd3\x17\xf9\x19Q', &(0x7f0000000780)='keyring\x002Rj\x00\xbe\xc5\x9c\x15\xff\xc9Mc\x8b\xac\r\x97\x19\xcae\x03\x8a\x96_a\x04\xa2\xc8\xb9^p\xd6\xee\x9e\xdf\xb7x6`\xe8\xd0\xf8\xbc\xdb\xf1p\x81\xef\x0e\xc1]0xffffffffffffffff}) ioctl$PERF_EVENT_IOC_ENABLE(r0, 0x8912, 0x400200) r1 = openat$kvm(0xffffffffffffff9c, &(0x7f00000000c0)='/dev/kvm\x00', 0x0, 0x0) openat$dlm_monitor(0xffffffffffffff9c, &(0x7f0000000340)='/dev/dlm-monitor\x00', 0x0, 0x0) r2 = ioctl$KVM_CREATE_VM(r1, 0xae01, 0x0) r3 = ioctl$KVM_CREATE_VCPU(r2, 0xae41, 0x0) syz_kvm_setup_cpu$x86(r2, 0xffffffffffffffff, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x0, 0x0, 0x0) syz_kvm_setup_cpu$x86(0xffffffffffffffff, r3, &(0x7f0000000000/0x18000)=nil, &(0x7f00000001c0)=[@text64={0x40, &(0x7f0000000040)="b9800000c00f3235001000000f30f24c0f2c49e8426dc4027d3493b80800003626660f7e676d660f1678b06cc403f9dfbeb70000000bc7442400f5000000c744240284d178bcff1c24f2f347dbe1", 0x4e}], 0x1, 0x48, 0x0, 0x0) pipe2(&(0x7f0000000000), 0x0) ioctl$KVM_RUN(r3, 0xae80, 0x100000000000000) 03:47:42 executing program 2: r0 = openat$vfio(0xffffffffffffff9c, &(0x7f0000000100)='/dev/vfio/vfio\x00', 0x10300, 0x0) ioctl$KVM_SET_CLOCK(r0, 0x4030ae7b, &(0x7f0000000180)={0xffffffffffffff01, 0x3}) r1 = openat$dlm_control(0xffffffffffffff9c, &(0x7f0000000300)='/dev/dlm-control\x00', 0x220000, 0x0) getsockopt$IP_VS_SO_GET_SERVICES(r1, 0x0, 0x482, &(0x7f00000001c0)=""/43, &(0x7f0000000240)=0x2b) ioctl$DRM_IOCTL_RES_CTX(0xffffffffffffff9c, 0xc0106426, &(0x7f0000000080)={0x2, &(0x7f0000000040)=[{}, {0x0}]}) ioctl$DRM_IOCTL_LOCK(r1, 0x4008642a, &(0x7f00000000c0)={r2, 0x1a}) syz_mount_image$gfs2(&(0x7f0000000140)='gfs2\x00', &(0x7f0000000200)='./file0\x00', 0x0, 0x0, 0x0, 0x0, 0x0) ioctl$KDGKBENT(r0, 0x4b46, &(0x7f0000000000)={0xcf, 0x2, 0x4}) ioctl$KDGKBLED(r1, 0x4b64, &(0x7f0000000280)) socketpair$unix(0x1, 0x0, 0x0, 0x0) 03:47:43 executing program 3: syz_mount_image$gfs2(&(0x7f0000000140)='gfs2\x00', &(0x7f0000000200)='./file0\x00', 0x0, 0x0, 0x0, 0x0, &(0x7f00000003c0)={[{@locktable={'locktable', 0x3d, '/'}}, {@lockproto_nolock='lockproto=lock_nolock'}]}) [ 1123.315142] gfs2: fsid=_: Trying to join cluster "lock_nolock", "_" [ 1123.333139] gfs2: fsid=_: Now mounting FS... [ 1123.373627] gfs2: not a GFS2 filesystem [ 1123.386502] gfs2: fsid=_: can't read superblock [ 1123.415677] sysfs: cannot create duplicate filename '/fs/gfs2/_' [ 1123.462729] gfs2: fsid=_: can't read superblock: -22 [ 1123.470959] gfs2: not a GFS2 filesystem [ 1123.476302] CPU: 0 PID: 21928 Comm: syz-executor3 Not tainted 4.20.0-next-20190103 #4 [ 1123.484288] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 1123.493675] Call Trace: [ 1123.496280] dump_stack+0x1db/0x2d0 [ 1123.499933] ? dump_stack_print_info.cold+0x20/0x20 [ 1123.504974] ? _raw_spin_unlock_irqrestore+0xa4/0xe0 [ 1123.510118] sysfs_warn_dup.cold+0x1c/0x31 [ 1123.514370] sysfs_create_dir_ns+0x2ce/0x330 [ 1123.514392] ? sysfs_create_mount_point+0xa0/0xa0 [ 1123.514410] ? do_raw_spin_trylock+0x270/0x270 [ 1123.514467] kobject_add_internal.cold+0x129/0x6d8 [ 1123.514489] ? kobj_ns_type_registered+0x60/0x60 [ 1123.538032] ? kfree_const+0x59/0x70 [ 1123.541767] ? rcu_read_lock_sched_held+0x110/0x130 [ 1123.541785] ? kfree+0x1fa/0x230 [ 1123.541803] ? kfree_const+0x5e/0x70 [ 1123.541824] kobject_init_and_add+0x101/0x160 [ 1123.558403] ? kobject_add_internal+0x4b0/0x4b0 [ 1123.563105] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 1123.568661] ? vsnprintf+0x368/0x1b10 [ 1123.572484] gfs2_sys_fs_add+0x210/0x500 [ 1123.576566] ? recover_store+0x1a0/0x1a0 [ 1123.580660] ? snprintf+0xbb/0xf0 [ 1123.584132] ? vsprintf+0x30/0x40 [ 1123.587610] ? set_blocksize+0x2bf/0x340 [ 1123.591685] ? memcpy+0x46/0x50 [ 1123.594993] fill_super+0x894/0x1990 [ 1123.598739] ? gfs2_online_uevent+0x2d0/0x2d0 [ 1123.603247] ? snprintf+0xbb/0xf0 [ 1123.606707] ? vsprintf+0x40/0x40 [ 1123.610183] ? ns_capable_common+0x141/0x170 [ 1123.614601] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 1123.619641] ? set_blocksize+0x2bf/0x340 [ 1123.623755] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 1123.629330] gfs2_mount+0x5db/0x6ee [ 1123.632988] ? fill_super+0x1990/0x1990 [ 1123.637009] ? vfs_parse_fs_string+0x1c5/0x2b0 [ 1123.641625] ? vfs_parse_fs_param+0x4b0/0x4b0 [ 1123.646136] ? fill_super+0x1990/0x1990 [ 1123.650127] legacy_get_tree+0xf2/0x200 [ 1123.654121] vfs_get_tree+0x123/0x450 [ 1123.657939] do_mount+0x1622/0x2fa0 [ 1123.661591] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 1123.666383] ? copy_mount_string+0x40/0x40 [ 1123.670641] ? copy_mount_options+0x1de/0x440 [ 1123.675180] ? __sanitizer_cov_trace_pc+0x48/0x50 [ 1123.680035] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 1123.685608] ? copy_mount_options+0x30e/0x440 [ 1123.690132] ksys_mount+0xdb/0x150 [ 1123.693701] __x64_sys_mount+0xbe/0x150 [ 1123.697699] do_syscall_64+0x1a3/0x800 [ 1123.701604] ? syscall_return_slowpath+0x5f0/0x5f0 [ 1123.706547] ? prepare_exit_to_usermode+0x232/0x3b0 [ 1123.711605] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 1123.716459] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 1123.721650] RIP: 0033:0x45a93a [ 1123.724843] Code: b8 a6 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 ed 8c fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 0f 83 ca 8c fb ff c3 66 0f 1f 84 00 00 00 00 00 [ 1123.743752] RSP: 002b:00007fdbfe5d2a88 EFLAGS: 00000206 ORIG_RAX: 00000000000000a5 [ 1123.751460] RAX: ffffffffffffffda RBX: 00007fdbfe5d2b30 RCX: 000000000045a93a 03:47:43 executing program 1: r0 = openat$kvm(0xffffffffffffff9c, &(0x7f0000000140)='/dev/kvm\x00', 0x0, 0x0) r1 = ioctl$KVM_CREATE_VM(r0, 0xae01, 0x0) r2 = ioctl$KVM_CREATE_VCPU(r1, 0xae41, 0x0) ioctl$KVM_SET_USER_MEMORY_REGION(r1, 0x4020ae46, &(0x7f0000000400)={0x0, 0x3, 0x0, 0x2000, &(0x7f0000000000/0x2000)=nil}) syz_kvm_setup_cpu$x86(r1, 0xffffffffffffffff, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x0, 0x0, 0xfffffffffffffe78) sendmmsg$unix(0xffffffffffffffff, &(0x7f0000002780)=[{0x0, 0x0, &(0x7f0000001d00)=[{&(0x7f0000000bc0)="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", 0x3c5}], 0x1}], 0x1, 0x0) ioctl$KVM_REGISTER_COALESCED_MMIO(r1, 0x4010ae67, &(0x7f00000000c0)={0x0, 0x15200}) syz_kvm_setup_cpu$x86(0xffffffffffffffff, r2, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x8, 0x0, 0x0) ioctl$KVM_RUN(r2, 0xae80, 0x55000000) [ 1123.758733] RDX: 00007fdbfe5d2ad0 RSI: 0000000020000200 RDI: 00007fdbfe5d2af0 [ 1123.766015] RBP: 0000000020000200 R08: 00007fdbfe5d2b30 R09: 00007fdbfe5d2ad0 [ 1123.773282] R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000003 [ 1123.780562] R13: 0000000000000000 R14: 00000000004db380 R15: 00000000ffffffff [ 1123.793088] kobject_add_internal failed for _ with -EEXIST, don't try to register things with the same name in the same directory. [ 1123.860566] gfs2: fsid=_: error -17 adding sysfs files 03:47:43 executing program 0: socketpair$unix(0x1, 0x1, 0x0, &(0x7f0000000440)={0xffffffffffffffff, 0xffffffffffffffff}) ioctl$PERF_EVENT_IOC_ENABLE(r0, 0x8912, 0x400200) r1 = openat$kvm(0xffffffffffffff9c, &(0x7f00000000c0)='/dev/kvm\x00', 0x0, 0x0) openat$dlm_monitor(0xffffffffffffff9c, &(0x7f0000000340)='/dev/dlm-monitor\x00', 0x0, 0x0) r2 = ioctl$KVM_CREATE_VM(r1, 0xae01, 0x0) r3 = ioctl$KVM_CREATE_VCPU(r2, 0xae41, 0x0) syz_kvm_setup_cpu$x86(r2, 0xffffffffffffffff, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x0, 0x0, 0x0) syz_kvm_setup_cpu$x86(0xffffffffffffffff, r3, &(0x7f0000000000/0x18000)=nil, &(0x7f00000001c0)=[@text64={0x40, &(0x7f0000000040)="b9800000c00f3235001000000f30f24c0f2c49e8426dc4027d3493b80800003626660f7e676d660f1678b06cc403f9dfbeb70000000bc7442400f5000000c744240284d178bcff1c24f2f347dbe1", 0x4e}], 0x1, 0x48, 0x0, 0x0) pipe2(&(0x7f0000000000), 0x0) ioctl$KVM_RUN(r3, 0xae80, 0xf00000000000000) [ 1123.897791] gfs2: not a GFS2 filesystem 03:47:43 executing program 5: r0 = socket$inet(0x2, 0x4000000000000001, 0x0) setsockopt$inet_tcp_int(r0, 0x6, 0x80000000000002, &(0x7f0000000040)=0x74, 0x4) bind$inet(r0, &(0x7f0000000180)={0x2, 0x4e23, @multicast1}, 0x10) sendto$inet(r0, 0x0, 0x0, 0x200007fd, &(0x7f0000e68000)={0x2, 0x4e23, @local}, 0x10) write$binfmt_elf64(r0, &(0x7f00000012c0)=ANY=[@ANYBLOB="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"], 0x209) mmap(&(0x7f0000000000/0xb36000)=nil, 0xb36000, 0x3, 0x8031, 0xffffffffffffffff, 0x0) sendmmsg$inet_sctp(r0, &(0x7f0000002600), 0x0, 0x0) 03:47:43 executing program 1: r0 = openat$kvm(0xffffffffffffff9c, &(0x7f0000000140)='/dev/kvm\x00', 0x0, 0x0) r1 = ioctl$KVM_CREATE_VM(r0, 0xae01, 0x0) r2 = ioctl$KVM_CREATE_VCPU(r1, 0xae41, 0x0) ioctl$KVM_SET_USER_MEMORY_REGION(r1, 0x4020ae46, &(0x7f0000000400)={0x0, 0x3, 0x0, 0x2000, &(0x7f0000000000/0x2000)=nil}) syz_kvm_setup_cpu$x86(r1, 0xffffffffffffffff, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x0, 0x0, 0xfffffffffffffe78) sendmmsg$unix(0xffffffffffffffff, &(0x7f0000002780)=[{0x0, 0x0, &(0x7f0000001d00)=[{&(0x7f0000000bc0)="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", 0x3c5}], 0x1}], 0x1, 0x0) ioctl$KVM_REGISTER_COALESCED_MMIO(r1, 0x4010ae67, &(0x7f00000000c0)={0x0, 0x15200}) syz_kvm_setup_cpu$x86(0xffffffffffffffff, r2, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x8, 0x0, 0x0) ioctl$KVM_RUN(r2, 0xae80, 0x1900) 03:47:43 executing program 2: syz_mount_image$gfs2(&(0x7f0000000140)='gfs2\x00', &(0x7f0000000200)='./file0\x00', 0x0, 0x0, 0x0, 0x0, 0x0) 03:47:43 executing program 4: syz_mount_image$gfs2(&(0x7f0000000140)='gfs2\x00', &(0x7f0000000200)='./file0\x00', 0xed25010000000000, 0x0, 0x0, 0x0, &(0x7f00000003c0)={[{@locktable={'locktable', 0x3d, '/'}}, {@lockproto_nolock='lockproto=lock_nolock'}]}) socketpair$unix(0x1, 0x1, 0x0, &(0x7f0000000180)) 03:47:43 executing program 3: syz_mount_image$gfs2(&(0x7f0000000140)='gfs2\xb4', &(0x7f0000000200)='./file0\x00', 0x0, 0x0, 0x0, 0x0, &(0x7f00000003c0)={[{@locktable={'locktable', 0x3d, '/'}}, {@lockproto_nolock='lockproto=lock_nolock'}]}) [ 1124.244426] gfs2: not a GFS2 filesystem [ 1124.318805] gfs2: not a GFS2 filesystem [ 1124.388198] gfs2: fsid=_: Trying to join cluster "lock_nolock", "_" 03:47:44 executing program 1: r0 = openat$kvm(0xffffffffffffff9c, &(0x7f0000000140)='/dev/kvm\x00', 0x0, 0x0) r1 = ioctl$KVM_CREATE_VM(r0, 0xae01, 0x0) r2 = ioctl$KVM_CREATE_VCPU(r1, 0xae41, 0x0) ioctl$KVM_SET_USER_MEMORY_REGION(r1, 0x4020ae46, &(0x7f0000000400)={0x0, 0x3, 0x0, 0x2000, &(0x7f0000000000/0x2000)=nil}) syz_kvm_setup_cpu$x86(r1, 0xffffffffffffffff, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x0, 0x0, 0xfffffffffffffe78) sendmmsg$unix(0xffffffffffffffff, &(0x7f0000002780)=[{0x0, 0x0, &(0x7f0000001d00)=[{&(0x7f0000000bc0)="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", 0x3c5}], 0x1}], 0x1, 0x0) ioctl$KVM_REGISTER_COALESCED_MMIO(r1, 0x4010ae67, &(0x7f00000000c0)={0x0, 0x15200}) syz_kvm_setup_cpu$x86(0xffffffffffffffff, r2, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x8, 0x0, 0x0) ioctl$KVM_RUN(r2, 0xae80, 0x3800) 03:47:44 executing program 2: syz_mount_image$gfs2(&(0x7f0000000140)='gfs2\x00', &(0x7f0000000200)='./file0\x00', 0x0, 0x0, 0x0, 0x0, 0x0) socketpair$unix(0x1, 0x0, 0x0, 0x0) arch_prctl$ARCH_GET_GS(0x1004, &(0x7f0000000000)) r0 = openat$rtc(0xffffffffffffff9c, &(0x7f0000000040)='/dev/rtc0\x00', 0x80, 0x0) ioctl$KVM_SET_FPU(r0, 0x41a0ae8d, &(0x7f0000000240)={[], 0x1, 0x7, 0x23, 0x0, 0x3f, 0x6000, 0x1000, [], 0x509}) openat(r0, &(0x7f0000000080)='./file0\x00', 0x801, 0x40) [ 1124.465576] gfs2: fsid=_: Now mounting FS... [ 1124.508894] gfs2: not a GFS2 filesystem [ 1124.533176] gfs2: fsid=_: can't read superblock [ 1124.545956] gfs2: fsid=_: can't read superblock: -22 03:47:44 executing program 3: syz_mount_image$gfs2(&(0x7f0000000140)='gfs2\x00', &(0x7f0000000200)='./file0\x00', 0x0, 0x0, 0x0, 0x0, &(0x7f00000003c0)={[{@locktable={'locktable', 0x3d, '/'}}, {@lockproto_nolock='lockproto=lock_nolock'}]}) 03:47:44 executing program 0: socketpair$unix(0x1, 0x1, 0x0, &(0x7f0000000440)={0xffffffffffffffff, 0xffffffffffffffff}) ioctl$PERF_EVENT_IOC_ENABLE(r0, 0x8912, 0x400200) r1 = openat$kvm(0xffffffffffffff9c, &(0x7f00000000c0)='/dev/kvm\x00', 0x0, 0x0) openat$dlm_monitor(0xffffffffffffff9c, &(0x7f0000000340)='/dev/dlm-monitor\x00', 0x0, 0x0) r2 = ioctl$KVM_CREATE_VM(r1, 0xae01, 0x0) r3 = ioctl$KVM_CREATE_VCPU(r2, 0xae41, 0x0) syz_kvm_setup_cpu$x86(r2, 0xffffffffffffffff, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x0, 0x0, 0x0) syz_kvm_setup_cpu$x86(0xffffffffffffffff, r3, &(0x7f0000000000/0x18000)=nil, &(0x7f00000001c0)=[@text64={0x40, &(0x7f0000000040)="b9800000c00f3235001000000f30f24c0f2c49e8426dc4027d3493b80800003626660f7e676d660f1678b06cc403f9dfbeb70000000bc7442400f5000000c744240284d178bcff1c24f2f347dbe1", 0x4e}], 0x1, 0x48, 0x0, 0x0) pipe2(&(0x7f0000000000), 0x0) ioctl$KVM_RUN(r3, 0xae80, 0x7fda2237f0000) [ 1124.619344] gfs2: not a GFS2 filesystem 03:47:44 executing program 1: r0 = openat$kvm(0xffffffffffffff9c, &(0x7f0000000140)='/dev/kvm\x00', 0x0, 0x0) r1 = ioctl$KVM_CREATE_VM(r0, 0xae01, 0x0) r2 = ioctl$KVM_CREATE_VCPU(r1, 0xae41, 0x0) ioctl$KVM_SET_USER_MEMORY_REGION(r1, 0x4020ae46, &(0x7f0000000400)={0x0, 0x3, 0x0, 0x2000, &(0x7f0000000000/0x2000)=nil}) syz_kvm_setup_cpu$x86(r1, 0xffffffffffffffff, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x0, 0x0, 0xfffffffffffffe78) sendmmsg$unix(0xffffffffffffffff, &(0x7f0000002780)=[{0x0, 0x0, &(0x7f0000001d00)=[{&(0x7f0000000bc0)="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", 0x3c5}], 0x1}], 0x1, 0x0) ioctl$KVM_REGISTER_COALESCED_MMIO(r1, 0x4010ae67, &(0x7f00000000c0)={0x0, 0x15200}) syz_kvm_setup_cpu$x86(0xffffffffffffffff, r2, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x8, 0x0, 0x0) ioctl$KVM_RUN(r2, 0xae80, 0xffffffffffffffc6) [ 1124.799252] gfs2: not a GFS2 filesystem [ 1124.816187] gfs2: fsid=_: Trying to join cluster "lock_nolock", "_" [ 1124.839165] gfs2: fsid=_: Now mounting FS... 03:47:44 executing program 2: syz_mount_image$gfs2(&(0x7f0000000140)='gfs2\x00', &(0x7f0000000000)='./file0\x00', 0x2, 0x0, 0x0, 0x0, 0x0) r0 = accept4$inet6(0xffffffffffffff9c, &(0x7f0000000040)={0xa, 0x0, 0x0, @remote}, &(0x7f0000000080)=0x1c, 0x80000) setxattr$security_ima(&(0x7f0000000100)='./file0\x00', &(0x7f0000000180)='security.ima\x00', &(0x7f00000001c0)=@v1={0x2, "b39c24f3aef2aa3f5b9aac8a3ee2f3b262470a"}, 0x14, 0x1) setsockopt$inet6_tcp_int(r0, 0x6, 0x22, &(0x7f00000000c0)=0x2, 0x4) socketpair$unix(0x1, 0x0, 0x0, 0x0) [ 1124.903019] sysfs: cannot create duplicate filename '/fs/gfs2/_' [ 1124.911235] gfs2: not a GFS2 filesystem [ 1124.924799] gfs2: fsid=_: can't read superblock [ 1124.934366] CPU: 1 PID: 22006 Comm: syz-executor3 Not tainted 4.20.0-next-20190103 #4 [ 1124.942348] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 1124.951714] Call Trace: [ 1124.954340] dump_stack+0x1db/0x2d0 [ 1124.957985] ? dump_stack_print_info.cold+0x20/0x20 [ 1124.963015] ? _raw_spin_unlock_irqrestore+0xa4/0xe0 [ 1124.968142] sysfs_warn_dup.cold+0x1c/0x31 [ 1124.972390] sysfs_create_dir_ns+0x2ce/0x330 [ 1124.976805] ? sysfs_create_mount_point+0xa0/0xa0 [ 1124.981666] ? do_raw_spin_trylock+0x270/0x270 [ 1124.986276] kobject_add_internal.cold+0x129/0x6d8 [ 1124.991237] ? kobj_ns_type_registered+0x60/0x60 [ 1124.996008] ? kfree_const+0x59/0x70 [ 1124.999728] ? rcu_read_lock_sched_held+0x110/0x130 [ 1125.004748] ? kfree+0x1fa/0x230 [ 1125.008127] ? kfree_const+0x5e/0x70 [ 1125.011861] kobject_init_and_add+0x101/0x160 [ 1125.013146] gfs2: fsid=_: can't read superblock: -22 [ 1125.016376] ? kobject_add_internal+0x4b0/0x4b0 [ 1125.016409] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 1125.016436] ? vsnprintf+0x368/0x1b10 [ 1125.016476] gfs2_sys_fs_add+0x210/0x500 [ 1125.039619] ? recover_store+0x1a0/0x1a0 [ 1125.039638] ? snprintf+0xbb/0xf0 [ 1125.039664] ? vsprintf+0x30/0x40 [ 1125.050623] ? set_blocksize+0x2bf/0x340 [ 1125.054693] ? memcpy+0x46/0x50 [ 1125.057985] fill_super+0x894/0x1990 [ 1125.061719] ? gfs2_online_uevent+0x2d0/0x2d0 [ 1125.066237] ? snprintf+0xbb/0xf0 [ 1125.069716] ? vsprintf+0x40/0x40 [ 1125.073191] ? ns_capable_common+0x141/0x170 [ 1125.077610] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 1125.077625] ? set_blocksize+0x2bf/0x340 [ 1125.077643] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 1125.077664] gfs2_mount+0x5db/0x6ee [ 1125.095892] ? fill_super+0x1990/0x1990 [ 1125.099895] ? vfs_parse_fs_string+0x1c5/0x2b0 [ 1125.104496] ? vfs_parse_fs_param+0x4b0/0x4b0 [ 1125.109000] ? fill_super+0x1990/0x1990 [ 1125.112975] legacy_get_tree+0xf2/0x200 [ 1125.112998] vfs_get_tree+0x123/0x450 [ 1125.113018] do_mount+0x1622/0x2fa0 [ 1125.113033] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 1125.113067] ? copy_mount_string+0x40/0x40 [ 1125.113095] ? __sanitizer_cov_trace_const_cmp8+0xc/0x20 [ 1125.113109] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 1125.129220] ? copy_mount_options+0x30e/0x440 [ 1125.129254] ksys_mount+0xdb/0x150 [ 1125.129274] __x64_sys_mount+0xbe/0x150 [ 1125.129292] do_syscall_64+0x1a3/0x800 [ 1125.160326] ? syscall_return_slowpath+0x5f0/0x5f0 [ 1125.165270] ? prepare_exit_to_usermode+0x232/0x3b0 [ 1125.170301] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 1125.175165] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 1125.180355] RIP: 0033:0x45a93a [ 1125.183552] Code: b8 a6 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 ed 8c fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 0f 83 ca 8c fb ff c3 66 0f 1f 84 00 00 00 00 00 [ 1125.202460] RSP: 002b:00007fdbfe5d2a88 EFLAGS: 00000206 ORIG_RAX: 00000000000000a5 [ 1125.202476] RAX: ffffffffffffffda RBX: 00007fdbfe5d2b30 RCX: 000000000045a93a [ 1125.202486] RDX: 00007fdbfe5d2ad0 RSI: 0000000020000200 RDI: 00007fdbfe5d2af0 [ 1125.202497] RBP: 0000000020000200 R08: 00007fdbfe5d2b30 R09: 00007fdbfe5d2ad0 [ 1125.202506] R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000003 [ 1125.202516] R13: 0000000000000000 R14: 00000000004db380 R15: 00000000ffffffff 03:47:44 executing program 0: socketpair$unix(0x1, 0x1, 0x0, &(0x7f0000000440)={0xffffffffffffffff, 0xffffffffffffffff}) ioctl$PERF_EVENT_IOC_ENABLE(r0, 0x8912, 0x400200) r1 = openat$kvm(0xffffffffffffff9c, &(0x7f00000000c0)='/dev/kvm\x00', 0x0, 0x0) openat$dlm_monitor(0xffffffffffffff9c, &(0x7f0000000340)='/dev/dlm-monitor\x00', 0x0, 0x0) r2 = ioctl$KVM_CREATE_VM(r1, 0xae01, 0x0) r3 = ioctl$KVM_CREATE_VCPU(r2, 0xae41, 0x0) syz_kvm_setup_cpu$x86(r2, 0xffffffffffffffff, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x0, 0x0, 0x0) syz_kvm_setup_cpu$x86(0xffffffffffffffff, r3, &(0x7f0000000000/0x18000)=nil, &(0x7f00000001c0)=[@text64={0x40, &(0x7f0000000040)="b9800000c00f3235001000000f30f24c0f2c49e8426dc4027d3493b80800003626660f7e676d660f1678b06cc403f9dfbeb70000000bc7442400f5000000c744240284d178bcff1c24f2f347dbe1", 0x4e}], 0x1, 0x48, 0x0, 0x0) pipe2(&(0x7f0000000000), 0x0) ioctl$KVM_RUN(r3, 0xae80, 0x1a0) [ 1125.225708] kobject_add_internal failed for _ with -EEXIST, don't try to register things with the same name in the same directory. [ 1125.259214] gfs2: fsid=_: error -17 adding sysfs files 03:47:45 executing program 5: r0 = socket$inet(0x2, 0x4000000000000001, 0x0) setsockopt$inet_tcp_int(r0, 0x6, 0x80000000000002, &(0x7f0000000040)=0x74, 0x4) bind$inet(r0, &(0x7f0000000180)={0x2, 0x4e23, @multicast1}, 0x10) sendto$inet(r0, 0x0, 0x0, 0x200007fd, &(0x7f0000e68000)={0x2, 0x4e23, @local}, 0x10) write$binfmt_elf64(r0, &(0x7f00000012c0)=ANY=[@ANYBLOB="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"], 0x209) mmap(&(0x7f0000000000/0xb36000)=nil, 0xb36000, 0x3, 0x8031, 0xffffffffffffffff, 0x0) sendmmsg$inet_sctp(r0, &(0x7f0000002600), 0x0, 0x0) 03:47:45 executing program 1: r0 = openat$kvm(0xffffffffffffff9c, &(0x7f0000000140)='/dev/kvm\x00', 0x0, 0x0) r1 = ioctl$KVM_CREATE_VM(r0, 0xae01, 0x0) r2 = ioctl$KVM_CREATE_VCPU(r1, 0xae41, 0x0) ioctl$KVM_SET_USER_MEMORY_REGION(r1, 0x4020ae46, &(0x7f0000000400)={0x0, 0x3, 0x0, 0x2000, &(0x7f0000000000/0x2000)=nil}) syz_kvm_setup_cpu$x86(r1, 0xffffffffffffffff, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x0, 0x0, 0xfffffffffffffe78) sendmmsg$unix(0xffffffffffffffff, &(0x7f0000002780)=[{0x0, 0x0, &(0x7f0000001d00)=[{&(0x7f0000000bc0)="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", 0x3c5}], 0x1}], 0x1, 0x0) ioctl$KVM_REGISTER_COALESCED_MMIO(r1, 0x4010ae67, &(0x7f00000000c0)={0x0, 0x15200}) syz_kvm_setup_cpu$x86(0xffffffffffffffff, r2, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x8, 0x0, 0x0) ioctl$KVM_RUN(r2, 0xae80, 0x15) 03:47:45 executing program 4: syz_mount_image$gfs2(&(0x7f0000000140)='gfs2\x00', &(0x7f0000000200)='./file0\x00', 0x11000000, 0x0, 0x0, 0x0, &(0x7f00000003c0)={[{@locktable={'locktable', 0x3d, '/'}}, {@lockproto_nolock='lockproto=lock_nolock'}]}) socketpair$unix(0x1, 0x1, 0x0, &(0x7f0000000180)) 03:47:45 executing program 3: syz_mount_image$gfs2(&(0x7f0000000140)='gfs2\x00', &(0x7f0000000200)='./file0\x00', 0x0, 0x0, 0x0, 0x0, &(0x7f00000003c0)={[{@locktable={'locktable', 0x3d, '/'}}, {@lockproto_nolock='lockproto=lock_nolock'}]}) 03:47:45 executing program 0: socketpair$unix(0x1, 0x1, 0x0, &(0x7f0000000440)={0xffffffffffffffff, 0xffffffffffffffff}) ioctl$PERF_EVENT_IOC_ENABLE(r0, 0x8912, 0x400200) r1 = openat$kvm(0xffffffffffffff9c, &(0x7f00000000c0)='/dev/kvm\x00', 0x0, 0x0) openat$dlm_monitor(0xffffffffffffff9c, &(0x7f0000000340)='/dev/dlm-monitor\x00', 0x0, 0x0) r2 = ioctl$KVM_CREATE_VM(r1, 0xae01, 0x0) r3 = ioctl$KVM_CREATE_VCPU(r2, 0xae41, 0x0) syz_kvm_setup_cpu$x86(r2, 0xffffffffffffffff, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x0, 0x0, 0x0) syz_kvm_setup_cpu$x86(0xffffffffffffffff, r3, &(0x7f0000000000/0x18000)=nil, &(0x7f00000001c0)=[@text64={0x40, &(0x7f0000000040)="b9800000c00f3235001000000f30f24c0f2c49e8426dc4027d3493b80800003626660f7e676d660f1678b06cc403f9dfbeb70000000bc7442400f5000000c744240284d178bcff1c24f2f347dbe1", 0x4e}], 0x1, 0x48, 0x0, 0x0) pipe2(&(0x7f0000000000), 0x0) ioctl$KVM_RUN(r3, 0xae80, 0xf000000) [ 1125.613132] gfs2: not a GFS2 filesystem [ 1125.665810] gfs2: not a GFS2 filesystem [ 1125.766705] gfs2: fsid=_: Trying to join cluster "lock_nolock", "_" [ 1125.792230] sysfs: cannot create duplicate filename '/fs/gfs2/_' [ 1125.811632] gfs2: fsid=_: Now mounting FS... 03:47:45 executing program 1: r0 = openat$kvm(0xffffffffffffff9c, &(0x7f0000000140)='/dev/kvm\x00', 0x0, 0x0) r1 = ioctl$KVM_CREATE_VM(r0, 0xae01, 0x0) r2 = ioctl$KVM_CREATE_VCPU(r1, 0xae41, 0x0) ioctl$KVM_SET_USER_MEMORY_REGION(r1, 0x4020ae46, &(0x7f0000000400)={0x0, 0x3, 0x0, 0x2000, &(0x7f0000000000/0x2000)=nil}) syz_kvm_setup_cpu$x86(r1, 0xffffffffffffffff, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x0, 0x0, 0xfffffffffffffe78) sendmmsg$unix(0xffffffffffffffff, &(0x7f0000002780)=[{0x0, 0x0, &(0x7f0000001d00)=[{&(0x7f0000000bc0)="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", 0x3c5}], 0x1}], 0x1, 0x0) ioctl$KVM_REGISTER_COALESCED_MMIO(r1, 0x4010ae67, &(0x7f00000000c0)={0x0, 0x15200}) syz_kvm_setup_cpu$x86(0xffffffffffffffff, r2, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x8, 0x0, 0x0) ioctl$KVM_RUN(r2, 0xae80, 0xf8c) 03:47:45 executing program 2: r0 = openat$btrfs_control(0xffffffffffffff9c, &(0x7f00000000c0)='/dev/btrfs-control\x00', 0x200000, 0x0) connect$bt_sco(r0, &(0x7f0000000100)={0x1f, {0x91b5, 0x2, 0x1, 0x1, 0x3, 0x8}}, 0x8) syz_mount_image$gfs2(&(0x7f0000000140)='gfs2\x00', &(0x7f0000000200)='./file0\x00', 0x0, 0x0, 0x0, 0x0, 0x0) r1 = openat$audio(0xffffffffffffff9c, &(0x7f0000000000)='/dev/audio\x00', 0x410000, 0x0) setsockopt$SO_VM_SOCKETS_BUFFER_MAX_SIZE(r1, 0x28, 0x2, &(0x7f0000000180)=0x8000, 0x8) write$selinux_attr(r1, &(0x7f0000000040)='system_u:object_r:initctl_t:s0\x00', 0x1f) socketpair$unix(0x1, 0x0, 0x0, 0x0) setsockopt$SO_RDS_MSG_RXPATH_LATENCY(r1, 0x114, 0xa, &(0x7f0000000080)={0x1, "b7"}, 0x2) [ 1125.832873] CPU: 0 PID: 22056 Comm: syz-executor3 Not tainted 4.20.0-next-20190103 #4 [ 1125.840860] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 1125.850220] Call Trace: [ 1125.852823] dump_stack+0x1db/0x2d0 [ 1125.856474] ? dump_stack_print_info.cold+0x20/0x20 [ 1125.861509] ? _raw_spin_unlock_irqrestore+0xa4/0xe0 [ 1125.866629] sysfs_warn_dup.cold+0x1c/0x31 [ 1125.866650] sysfs_create_dir_ns+0x2ce/0x330 [ 1125.866669] ? sysfs_create_mount_point+0xa0/0xa0 [ 1125.866687] ? do_raw_spin_trylock+0x270/0x270 [ 1125.875339] kobject_add_internal.cold+0x129/0x6d8 [ 1125.875363] ? kobj_ns_type_registered+0x60/0x60 [ 1125.875378] ? kfree_const+0x59/0x70 [ 1125.875393] ? rcu_read_lock_sched_held+0x110/0x130 [ 1125.875407] ? kfree+0x1fa/0x230 [ 1125.875427] ? kfree_const+0x5e/0x70 [ 1125.910270] kobject_init_and_add+0x101/0x160 [ 1125.914773] ? kobject_add_internal+0x4b0/0x4b0 [ 1125.919455] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 1125.925012] ? vsnprintf+0x368/0x1b10 [ 1125.928830] gfs2_sys_fs_add+0x210/0x500 [ 1125.932896] ? recover_store+0x1a0/0x1a0 [ 1125.936969] ? snprintf+0xbb/0xf0 [ 1125.940428] ? vsprintf+0x30/0x40 [ 1125.940447] ? set_blocksize+0x2bf/0x340 [ 1125.940481] ? memcpy+0x46/0x50 [ 1125.940513] fill_super+0x894/0x1990 [ 1125.940538] ? gfs2_online_uevent+0x2d0/0x2d0 [ 1125.955083] ? snprintf+0xbb/0xf0 [ 1125.955099] ? vsprintf+0x40/0x40 [ 1125.955121] ? ns_capable_common+0x141/0x170 [ 1125.955136] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 1125.955150] ? set_blocksize+0x2bf/0x340 [ 1125.955169] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 1125.955187] gfs2_mount+0x5db/0x6ee [ 1125.955203] ? fill_super+0x1990/0x1990 [ 1125.966605] ? vfs_parse_fs_string+0x1c5/0x2b0 [ 1125.966623] ? vfs_parse_fs_param+0x4b0/0x4b0 [ 1125.966638] ? fill_super+0x1990/0x1990 [ 1125.980123] legacy_get_tree+0xf2/0x200 [ 1125.980158] vfs_get_tree+0x123/0x450 [ 1125.980190] do_mount+0x1622/0x2fa0 [ 1125.980226] ? copy_mount_string+0x40/0x40 [ 1125.980257] ? kmem_cache_alloc_trace+0x354/0x760 [ 1126.026897] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 1126.032446] ? _copy_from_user+0xdd/0x150 [ 1126.036612] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 1126.039751] gfs2: not a GFS2 filesystem [ 1126.042168] ? copy_mount_options+0x30e/0x440 [ 1126.042192] ksys_mount+0xdb/0x150 [ 1126.042213] __x64_sys_mount+0xbe/0x150 [ 1126.042236] do_syscall_64+0x1a3/0x800 [ 1126.042254] ? syscall_return_slowpath+0x5f0/0x5f0 [ 1126.042271] ? prepare_exit_to_usermode+0x232/0x3b0 [ 1126.050733] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 1126.050760] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 1126.050773] RIP: 0033:0x45a93a [ 1126.050788] Code: b8 a6 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 ed 8c fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 0f 83 ca 8c fb ff c3 66 0f 1f 84 00 00 00 00 00 [ 1126.050799] RSP: 002b:00007fdbfe5d2a88 EFLAGS: 00000206 ORIG_RAX: 00000000000000a5 [ 1126.076922] RAX: ffffffffffffffda RBX: 00007fdbfe5d2b30 RCX: 000000000045a93a [ 1126.076943] RDX: 00007fdbfe5d2ad0 RSI: 0000000020000200 RDI: 00007fdbfe5d2af0 [ 1126.076952] RBP: 0000000020000200 R08: 00007fdbfe5d2b30 R09: 00007fdbfe5d2ad0 [ 1126.076961] R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000003 [ 1126.076971] R13: 0000000000000000 R14: 00000000004db380 R15: 00000000ffffffff [ 1126.119260] gfs2: not a GFS2 filesystem [ 1126.157903] gfs2: fsid=_: can't read superblock [ 1126.167157] gfs2: fsid=_: can't read superblock: -22 [ 1126.172416] kobject_add_internal failed for _ with -EEXIST, don't try to register things with the same name in the same directory. [ 1126.212187] gfs2: fsid=_: error -17 adding sysfs files [ 1126.245758] gfs2: not a GFS2 filesystem 03:47:46 executing program 0: socketpair$unix(0x1, 0x1, 0x0, &(0x7f0000000440)={0xffffffffffffffff, 0xffffffffffffffff}) ioctl$PERF_EVENT_IOC_ENABLE(r0, 0x8912, 0x400200) r1 = openat$kvm(0xffffffffffffff9c, &(0x7f00000000c0)='/dev/kvm\x00', 0x0, 0x0) openat$dlm_monitor(0xffffffffffffff9c, &(0x7f0000000340)='/dev/dlm-monitor\x00', 0x0, 0x0) r2 = ioctl$KVM_CREATE_VM(r1, 0xae01, 0x0) r3 = ioctl$KVM_CREATE_VCPU(r2, 0xae41, 0x0) syz_kvm_setup_cpu$x86(r2, 0xffffffffffffffff, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x0, 0x0, 0x0) syz_kvm_setup_cpu$x86(0xffffffffffffffff, r3, &(0x7f0000000000/0x18000)=nil, &(0x7f00000001c0)=[@text64={0x40, &(0x7f0000000040)="b9800000c00f3235001000000f30f24c0f2c49e8426dc4027d3493b80800003626660f7e676d660f1678b06cc403f9dfbeb70000000bc7442400f5000000c744240284d178bcff1c24f2f347dbe1", 0x4e}], 0x1, 0x48, 0x0, 0x0) pipe2(&(0x7f0000000000), 0x0) ioctl$KVM_RUN(r3, 0xae80, 0xf) 03:47:46 executing program 2: r0 = syz_open_dev$dmmidi(&(0x7f0000000000)='/dev/dmmidi#\x00', 0x9, 0x28002) execveat(r0, &(0x7f0000000040)='./file0\x00', &(0x7f0000000100)=[&(0x7f0000000080)='\'wlan1keyring\x00', &(0x7f00000000c0)='@5\x00'], &(0x7f0000000240)=[&(0x7f0000000180)='\x00', &(0x7f00000001c0)='em0\x00'], 0x400) setsockopt$inet_group_source_req(r0, 0x0, 0x2e, &(0x7f0000000280)={0x7fff, {{0x2, 0x4e24, @dev={0xac, 0x14, 0x14, 0x23}}}, {{0x2, 0x4e21, @dev={0xac, 0x14, 0x14, 0x13}}}}, 0x108) syz_mount_image$gfs2(&(0x7f0000000140)='gfs2\x00', &(0x7f0000000200)='./file0\x00', 0x0, 0x0, 0x0, 0x0, 0x0) socketpair$unix(0x1, 0x0, 0x0, 0x0) 03:47:46 executing program 1: r0 = openat$kvm(0xffffffffffffff9c, &(0x7f0000000140)='/dev/kvm\x00', 0x0, 0x0) r1 = ioctl$KVM_CREATE_VM(r0, 0xae01, 0x0) r2 = ioctl$KVM_CREATE_VCPU(r1, 0xae41, 0x0) ioctl$KVM_SET_USER_MEMORY_REGION(r1, 0x4020ae46, &(0x7f0000000400)={0x0, 0x3, 0x0, 0x2000, &(0x7f0000000000/0x2000)=nil}) syz_kvm_setup_cpu$x86(r1, 0xffffffffffffffff, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x0, 0x0, 0xfffffffffffffe78) sendmmsg$unix(0xffffffffffffffff, &(0x7f0000002780)=[{0x0, 0x0, &(0x7f0000001d00)=[{&(0x7f0000000bc0)="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", 0x3c5}], 0x1}], 0x1, 0x0) ioctl$KVM_REGISTER_COALESCED_MMIO(r1, 0x4010ae67, &(0x7f00000000c0)={0x0, 0x15200}) syz_kvm_setup_cpu$x86(0xffffffffffffffff, r2, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x8, 0x0, 0x0) ioctl$KVM_RUN(r2, 0xae80, 0x1000000000000000) 03:47:46 executing program 5: r0 = socket$inet(0x2, 0x4000000000000001, 0x0) setsockopt$inet_tcp_int(r0, 0x6, 0x80000000000002, &(0x7f0000000040)=0x74, 0x4) bind$inet(r0, &(0x7f0000000180)={0x2, 0x4e23, @multicast1}, 0x10) sendto$inet(r0, 0x0, 0x0, 0x200007fd, &(0x7f0000e68000)={0x2, 0x4e23, @local}, 0x10) write$binfmt_elf64(r0, &(0x7f00000012c0)=ANY=[@ANYBLOB="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"], 0x209) mmap(&(0x7f0000000000/0xb36000)=nil, 0xb36000, 0x3, 0x8031, 0xffffffffffffffff, 0x0) sendmmsg$inet_sctp(r0, &(0x7f0000002600)=[{0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0xf00}], 0x1, 0x0) 03:47:46 executing program 3: syz_mount_image$gfs2(&(0x7f0000000140)='gfs2\x0f', &(0x7f0000000200)='./file0\x00', 0x0, 0x0, 0x0, 0x0, &(0x7f00000003c0)={[{@locktable={'locktable', 0x3d, '/'}}, {@lockproto_nolock='lockproto=lock_nolock'}]}) [ 1126.476504] gfs2: not a GFS2 filesystem [ 1126.491014] gfs2: fsid=_: Trying to join cluster "lock_nolock", "_" [ 1126.529389] gfs2: fsid=_: Now mounting FS... 03:47:46 executing program 2: syz_mount_image$gfs2(&(0x7f0000000000)='gfs2\x00', &(0x7f0000000040)='./file0\x00', 0x400003c51, 0xffffffffffffff45, 0x0, 0x0, 0x0) socketpair$unix(0x1, 0x0, 0x0, 0x0) [ 1126.580445] gfs2: not a GFS2 filesystem [ 1126.585288] gfs2: fsid=_: can't read superblock [ 1126.613069] gfs2: fsid=_: can't read superblock: -22 03:47:46 executing program 1: r0 = openat$kvm(0xffffffffffffff9c, &(0x7f0000000140)='/dev/kvm\x00', 0x0, 0x0) r1 = ioctl$KVM_CREATE_VM(r0, 0xae01, 0x0) r2 = ioctl$KVM_CREATE_VCPU(r1, 0xae41, 0x0) ioctl$KVM_SET_USER_MEMORY_REGION(r1, 0x4020ae46, &(0x7f0000000400)={0x0, 0x3, 0x0, 0x2000, &(0x7f0000000000/0x2000)=nil}) syz_kvm_setup_cpu$x86(r1, 0xffffffffffffffff, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x0, 0x0, 0xfffffffffffffe78) sendmmsg$unix(0xffffffffffffffff, &(0x7f0000002780)=[{0x0, 0x0, &(0x7f0000001d00)=[{&(0x7f0000000bc0)="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", 0x3c5}], 0x1}], 0x1, 0x0) ioctl$KVM_REGISTER_COALESCED_MMIO(r1, 0x4010ae67, &(0x7f00000000c0)={0x0, 0x15200}) syz_kvm_setup_cpu$x86(0xffffffffffffffff, r2, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x8, 0x0, 0x0) ioctl$KVM_RUN(r2, 0xae80, 0x200000000000000) 03:47:46 executing program 4: syz_mount_image$gfs2(&(0x7f0000000140)='gfs2\x00', &(0x7f0000000200)='./file0\x00', 0x97ffffff, 0x0, 0x0, 0x0, &(0x7f00000003c0)={[{@locktable={'locktable', 0x3d, '/'}}, {@lockproto_nolock='lockproto=lock_nolock'}]}) socketpair$unix(0x1, 0x1, 0x0, &(0x7f0000000180)) 03:47:46 executing program 2: syz_mount_image$gfs2(&(0x7f0000000140)='gfs2\x00', &(0x7f0000000200)='./file0\x00', 0x0, 0x0, 0x0, 0x0, 0x0) r0 = openat$sequencer2(0xffffffffffffff9c, &(0x7f0000000000)='/dev/sequencer2\x00', 0x8000, 0x0) mmap$binder(&(0x7f0000ffa000/0x4000)=nil, 0x4000, 0x4, 0x4010, r0, 0x0) ioctl$TUNSETPERSIST(r0, 0x400454cb, 0x1) fcntl$getownex(r0, 0x10, &(0x7f0000000040)) socketpair$unix(0x1, 0x0, 0x0, 0x0) 03:47:46 executing program 0: socketpair$unix(0x1, 0x1, 0x0, &(0x7f0000000440)={0xffffffffffffffff, 0xffffffffffffffff}) ioctl$PERF_EVENT_IOC_ENABLE(r0, 0x8912, 0x400200) r1 = openat$kvm(0xffffffffffffff9c, &(0x7f00000000c0)='/dev/kvm\x00', 0x0, 0x0) openat$dlm_monitor(0xffffffffffffff9c, &(0x7f0000000340)='/dev/dlm-monitor\x00', 0x0, 0x0) r2 = ioctl$KVM_CREATE_VM(r1, 0xae01, 0x0) r3 = ioctl$KVM_CREATE_VCPU(r2, 0xae41, 0x0) syz_kvm_setup_cpu$x86(r2, 0xffffffffffffffff, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x0, 0x0, 0x0) syz_kvm_setup_cpu$x86(0xffffffffffffffff, r3, &(0x7f0000000000/0x18000)=nil, &(0x7f00000001c0)=[@text64={0x40, &(0x7f0000000040)="b9800000c00f3235001000000f30f24c0f2c49e8426dc4027d3493b80800003626660f7e676d660f1678b06cc403f9dfbeb70000000bc7442400f5000000c744240284d178bcff1c24f2f347dbe1", 0x4e}], 0x1, 0x48, 0x0, 0x0) pipe2(&(0x7f0000000000), 0x0) ioctl$KVM_RUN(r3, 0xae80, 0x4000000) 03:47:46 executing program 3: syz_mount_image$gfs2(&(0x7f0000000140)='gfs2\x00', &(0x7f0000000200)='./file0\x00', 0x0, 0x0, 0x0, 0x0, &(0x7f00000003c0)={[{@locktable={'locktable', 0x3d, '/'}}, {@lockproto_nolock='lockproto=lock_nolock'}]}) [ 1127.037714] gfs2: not a GFS2 filesystem 03:47:46 executing program 1: r0 = openat$kvm(0xffffffffffffff9c, &(0x7f0000000140)='/dev/kvm\x00', 0x0, 0x0) r1 = ioctl$KVM_CREATE_VM(r0, 0xae01, 0x0) r2 = ioctl$KVM_CREATE_VCPU(r1, 0xae41, 0x0) ioctl$KVM_SET_USER_MEMORY_REGION(r1, 0x4020ae46, &(0x7f0000000400)={0x0, 0x3, 0x0, 0x2000, &(0x7f0000000000/0x2000)=nil}) syz_kvm_setup_cpu$x86(r1, 0xffffffffffffffff, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x0, 0x0, 0xfffffffffffffe78) sendmmsg$unix(0xffffffffffffffff, &(0x7f0000002780)=[{0x0, 0x0, &(0x7f0000001d00)=[{&(0x7f0000000bc0)="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", 0x3c5}], 0x1}], 0x1, 0x0) ioctl$KVM_REGISTER_COALESCED_MMIO(r1, 0x4010ae67, &(0x7f00000000c0)={0x0, 0x15200}) syz_kvm_setup_cpu$x86(0xffffffffffffffff, r2, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x8, 0x0, 0x0) ioctl$KVM_RUN(r2, 0xae80, 0x8000a0ffffffff) [ 1127.225499] gfs2: fsid=_: Trying to join cluster "lock_nolock", "_" [ 1127.256092] sysfs: cannot create duplicate filename '/fs/gfs2/_' [ 1127.262270] CPU: 1 PID: 22136 Comm: syz-executor4 Not tainted 4.20.0-next-20190103 #4 [ 1127.270240] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 1127.279599] Call Trace: [ 1127.282208] dump_stack+0x1db/0x2d0 [ 1127.285863] ? dump_stack_print_info.cold+0x20/0x20 [ 1127.290906] ? _raw_spin_unlock_irqrestore+0xa4/0xe0 [ 1127.296028] sysfs_warn_dup.cold+0x1c/0x31 [ 1127.300282] sysfs_create_dir_ns+0x2ce/0x330 [ 1127.304694] ? sysfs_create_mount_point+0xa0/0xa0 [ 1127.309539] ? do_raw_spin_trylock+0x270/0x270 [ 1127.314131] kobject_add_internal.cold+0x129/0x6d8 [ 1127.319065] ? kobj_ns_type_registered+0x60/0x60 [ 1127.323828] ? kfree_const+0x59/0x70 [ 1127.327540] ? rcu_read_lock_sched_held+0x110/0x130 [ 1127.332565] ? kfree+0x1fa/0x230 [ 1127.335936] ? kfree_const+0x5e/0x70 [ 1127.339659] kobject_init_and_add+0x101/0x160 [ 1127.344157] ? kobject_add_internal+0x4b0/0x4b0 [ 1127.348834] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 1127.354382] ? vsnprintf+0x368/0x1b10 [ 1127.358197] gfs2_sys_fs_add+0x210/0x500 [ 1127.362256] ? recover_store+0x1a0/0x1a0 [ 1127.366315] ? snprintf+0xbb/0xf0 [ 1127.369779] ? vsprintf+0x30/0x40 [ 1127.373255] ? set_blocksize+0x2bf/0x340 [ 1127.377318] ? memcpy+0x46/0x50 [ 1127.380608] fill_super+0x894/0x1990 [ 1127.384336] ? gfs2_online_uevent+0x2d0/0x2d0 [ 1127.388843] ? snprintf+0xbb/0xf0 [ 1127.392293] ? vsprintf+0x40/0x40 [ 1127.395758] ? ns_capable_common+0x141/0x170 [ 1127.400169] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 1127.405207] ? set_blocksize+0x2bf/0x340 [ 1127.409280] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 1127.414823] gfs2_mount+0x5db/0x6ee [ 1127.418626] ? fill_super+0x1990/0x1990 [ 1127.422646] ? vfs_parse_fs_string+0x1c5/0x2b0 [ 1127.427256] ? vfs_parse_fs_param+0x4b0/0x4b0 [ 1127.431803] ? fill_super+0x1990/0x1990 [ 1127.435789] legacy_get_tree+0xf2/0x200 [ 1127.439771] vfs_get_tree+0x123/0x450 [ 1127.443581] do_mount+0x1622/0x2fa0 [ 1127.447213] ? copy_mount_string+0x40/0x40 [ 1127.451451] ? kmem_cache_alloc_trace+0x354/0x760 [ 1127.456327] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 1127.461860] ? copy_mount_options+0x30e/0x440 [ 1127.466378] ksys_mount+0xdb/0x150 [ 1127.469919] __x64_sys_mount+0xbe/0x150 [ 1127.473903] do_syscall_64+0x1a3/0x800 [ 1127.477786] ? syscall_return_slowpath+0x5f0/0x5f0 [ 1127.482718] ? prepare_exit_to_usermode+0x232/0x3b0 [ 1127.487735] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 1127.492593] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 1127.497775] RIP: 0033:0x45a93a [ 1127.500965] Code: b8 a6 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 ed 8c fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 0f 83 ca 8c fb ff c3 66 0f 1f 84 00 00 00 00 00 [ 1127.519858] RSP: 002b:00007ff699fe9a88 EFLAGS: 00000206 ORIG_RAX: 00000000000000a5 [ 1127.528031] RAX: ffffffffffffffda RBX: 00007ff699fe9b30 RCX: 000000000045a93a [ 1127.535298] RDX: 00007ff699fe9ad0 RSI: 0000000020000200 RDI: 00007ff699fe9af0 [ 1127.542561] RBP: 0000000020000200 R08: 00007ff699fe9b30 R09: 00007ff699fe9ad0 [ 1127.549835] R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000003 [ 1127.557120] R13: 0000000000000000 R14: 00000000004db380 R15: 00000000ffffffff [ 1127.564659] gfs2: fsid=_: Now mounting FS... [ 1127.570025] gfs2: not a GFS2 filesystem [ 1127.570069] gfs2: not a GFS2 filesystem [ 1127.602681] gfs2: fsid=_: can't read superblock [ 1127.622716] gfs2: fsid=_: can't read superblock: -22 03:47:47 executing program 2: syz_mount_image$gfs2(&(0x7f0000000140)='gfs2\x00', &(0x7f0000000200)='./file0\x00', 0x0, 0x0, 0x0, 0x0, 0x0) socketpair$unix(0x1, 0x5, 0x0, 0x0) r0 = socket$bt_cmtp(0x1f, 0x3, 0x5) ioctl$TIOCGSID(0xffffffffffffff9c, 0x5429, &(0x7f00000000c0)=0x0) ioctl$sock_FIOSETOWN(r0, 0x8901, &(0x7f0000000100)=r1) 03:47:47 executing program 1: r0 = openat$kvm(0xffffffffffffff9c, &(0x7f0000000140)='/dev/kvm\x00', 0x0, 0x0) r1 = ioctl$KVM_CREATE_VM(r0, 0xae01, 0x0) r2 = ioctl$KVM_CREATE_VCPU(r1, 0xae41, 0x0) ioctl$KVM_SET_USER_MEMORY_REGION(r1, 0x4020ae46, &(0x7f0000000400)={0x0, 0x3, 0x0, 0x2000, &(0x7f0000000000/0x2000)=nil}) syz_kvm_setup_cpu$x86(r1, 0xffffffffffffffff, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x0, 0x0, 0xfffffffffffffe78) sendmmsg$unix(0xffffffffffffffff, &(0x7f0000002780)=[{0x0, 0x0, &(0x7f0000001d00)=[{&(0x7f0000000bc0)="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", 0x3c5}], 0x1}], 0x1, 0x0) ioctl$KVM_REGISTER_COALESCED_MMIO(r1, 0x4010ae67, &(0x7f00000000c0)={0x0, 0x15200}) syz_kvm_setup_cpu$x86(0xffffffffffffffff, r2, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x8, 0x0, 0x0) ioctl$KVM_RUN(r2, 0xae80, 0xb000000) 03:47:47 executing program 0: socketpair$unix(0x1, 0x1, 0x0, &(0x7f0000000440)={0xffffffffffffffff, 0xffffffffffffffff}) ioctl$PERF_EVENT_IOC_ENABLE(r0, 0x8912, 0x400200) r1 = openat$kvm(0xffffffffffffff9c, &(0x7f00000000c0)='/dev/kvm\x00', 0x0, 0x0) openat$dlm_monitor(0xffffffffffffff9c, &(0x7f0000000340)='/dev/dlm-monitor\x00', 0x0, 0x0) r2 = ioctl$KVM_CREATE_VM(r1, 0xae01, 0x0) r3 = ioctl$KVM_CREATE_VCPU(r2, 0xae41, 0x0) syz_kvm_setup_cpu$x86(r2, 0xffffffffffffffff, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x0, 0x0, 0x0) syz_kvm_setup_cpu$x86(0xffffffffffffffff, r3, &(0x7f0000000000/0x18000)=nil, &(0x7f00000001c0)=[@text64={0x40, &(0x7f0000000040)="b9800000c00f3235001000000f30f24c0f2c49e8426dc4027d3493b80800003626660f7e676d660f1678b06cc403f9dfbeb70000000bc7442400f5000000c744240284d178bcff1c24f2f347dbe1", 0x4e}], 0x1, 0x48, 0x0, 0x0) pipe2(&(0x7f0000000000), 0x0) ioctl$KVM_RUN(r3, 0xae80, 0xf00) [ 1127.757874] kobject_add_internal failed for _ with -EEXIST, don't try to register things with the same name in the same directory. [ 1127.800861] gfs2: fsid=_: error -17 adding sysfs files [ 1127.957240] gfs2: not a GFS2 filesystem 03:47:47 executing program 5: r0 = socket$inet(0x2, 0x4000000000000001, 0x0) setsockopt$inet_tcp_int(r0, 0x6, 0x80000000000002, &(0x7f0000000040)=0x74, 0x4) bind$inet(r0, &(0x7f0000000180)={0x2, 0x4e23, @multicast1}, 0x10) sendto$inet(r0, 0x0, 0x0, 0x200007fd, &(0x7f0000e68000)={0x2, 0x4e23, @local}, 0x10) write$binfmt_elf64(r0, &(0x7f00000012c0)=ANY=[@ANYBLOB="7f454c4601000500000000000000000000000300000000008b0300000000000040000000000000001901000000000000cf0000000100380002000100c70a010151e57474090e00000300000000000000ff0f00000000000000000080000000000600000000000000db0a000000000000d616000000000000b27e2b7d90630ff79f047e22afbe739a615db84a0058ce3572d99ea10910ec6bf6ba57404bb35b88227009c25cfc6802a2b9a17a285b27f3e6a66f3f7d712cc9d3daf7e5b378f1f1aea47383c1b2213503c6bf3f6e73ca712d88eb1852562e8796913d6a3236e2532dcdade6597d5c20651c4520ce1ade1bd110422aba4e4364e2cf9589e661ad0ff96218d75fe22a793040b35188c96f2ca9fe626500000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000f52687e000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000901a50be12753000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"], 0x209) mmap(&(0x7f0000000000/0xb36000)=nil, 0xb36000, 0x3, 0x8031, 0xffffffffffffffff, 0x0) sendmmsg$inet_sctp(r0, &(0x7f0000002600)=[{0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0xf00}], 0x1, 0x0) 03:47:47 executing program 3: syz_mount_image$gfs2(&(0x7f0000000140)='gfs2\x00', &(0x7f0000000200)='./file0\x00', 0x0, 0x0, 0x0, 0x0, &(0x7f00000003c0)={[{@locktable={'locktable', 0x3d, '/'}}, {@lockproto_nolock='lockproto=lock_nolock'}]}) 03:47:47 executing program 4: syz_mount_image$gfs2(&(0x7f0000000140)='gfs2\x00', &(0x7f0000000200)='./file0\x00', 0x6c00, 0x0, 0x0, 0x0, &(0x7f00000003c0)={[{@locktable={'locktable', 0x3d, '/'}}, {@lockproto_nolock='lockproto=lock_nolock'}]}) socketpair$unix(0x1, 0x1, 0x0, &(0x7f0000000180)) 03:47:47 executing program 1: r0 = openat$kvm(0xffffffffffffff9c, &(0x7f0000000140)='/dev/kvm\x00', 0x0, 0x0) r1 = ioctl$KVM_CREATE_VM(r0, 0xae01, 0x0) r2 = ioctl$KVM_CREATE_VCPU(r1, 0xae41, 0x0) ioctl$KVM_SET_USER_MEMORY_REGION(r1, 0x4020ae46, &(0x7f0000000400)={0x0, 0x3, 0x0, 0x2000, &(0x7f0000000000/0x2000)=nil}) syz_kvm_setup_cpu$x86(r1, 0xffffffffffffffff, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x0, 0x0, 0xfffffffffffffe78) sendmmsg$unix(0xffffffffffffffff, &(0x7f0000002780)=[{0x0, 0x0, &(0x7f0000001d00)=[{&(0x7f0000000bc0)="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", 0x3c5}], 0x1}], 0x1, 0x0) ioctl$KVM_REGISTER_COALESCED_MMIO(r1, 0x4010ae67, &(0x7f00000000c0)={0x0, 0x15200}) syz_kvm_setup_cpu$x86(0xffffffffffffffff, r2, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x8, 0x0, 0x0) ioctl$KVM_RUN(r2, 0xae80, 0xa000000) 03:47:47 executing program 0: socketpair$unix(0x1, 0x1, 0x0, &(0x7f0000000440)={0xffffffffffffffff, 0xffffffffffffffff}) ioctl$PERF_EVENT_IOC_ENABLE(r0, 0x8912, 0x400200) r1 = openat$kvm(0xffffffffffffff9c, &(0x7f00000000c0)='/dev/kvm\x00', 0x0, 0x0) openat$dlm_monitor(0xffffffffffffff9c, &(0x7f0000000340)='/dev/dlm-monitor\x00', 0x0, 0x0) r2 = ioctl$KVM_CREATE_VM(r1, 0xae01, 0x0) r3 = ioctl$KVM_CREATE_VCPU(r2, 0xae41, 0x0) syz_kvm_setup_cpu$x86(r2, 0xffffffffffffffff, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x0, 0x0, 0x0) syz_kvm_setup_cpu$x86(0xffffffffffffffff, r3, &(0x7f0000000000/0x18000)=nil, &(0x7f00000001c0)=[@text64={0x40, &(0x7f0000000040)="b9800000c00f3235001000000f30f24c0f2c49e8426dc4027d3493b80800003626660f7e676d660f1678b06cc403f9dfbeb70000000bc7442400f5000000c744240284d178bcff1c24f2f347dbe1", 0x4e}], 0x1, 0x48, 0x0, 0x0) pipe2(&(0x7f0000000000), 0x0) ioctl$KVM_RUN(r3, 0xae80, 0x3f000000) [ 1128.095146] gfs2: not a GFS2 filesystem [ 1128.225428] gfs2: fsid=_: Trying to join cluster "lock_nolock", "_" [ 1128.241091] sysfs: cannot create duplicate filename '/fs/gfs2/_' [ 1128.263138] CPU: 1 PID: 22189 Comm: syz-executor3 Not tainted 4.20.0-next-20190103 #4 [ 1128.271113] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 1128.280462] Call Trace: [ 1128.283065] dump_stack+0x1db/0x2d0 [ 1128.286705] ? dump_stack_print_info.cold+0x20/0x20 [ 1128.291731] ? _raw_spin_unlock_irqrestore+0xa4/0xe0 [ 1128.296860] sysfs_warn_dup.cold+0x1c/0x31 [ 1128.301123] sysfs_create_dir_ns+0x2ce/0x330 [ 1128.305572] ? sysfs_create_mount_point+0xa0/0xa0 [ 1128.310420] ? do_raw_spin_trylock+0x270/0x270 [ 1128.315017] kobject_add_internal.cold+0x129/0x6d8 [ 1128.319952] ? kobj_ns_type_registered+0x60/0x60 [ 1128.324710] ? kfree_const+0x59/0x70 [ 1128.328423] ? rcu_read_lock_sched_held+0x110/0x130 [ 1128.333441] ? kfree+0x1fa/0x230 [ 1128.336808] ? kfree_const+0x5e/0x70 [ 1128.340565] kobject_init_and_add+0x101/0x160 [ 1128.345094] ? kobject_add_internal+0x4b0/0x4b0 [ 1128.349766] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 1128.355310] ? vsnprintf+0x368/0x1b10 [ 1128.359124] gfs2_sys_fs_add+0x210/0x500 [ 1128.363193] ? recover_store+0x1a0/0x1a0 [ 1128.367265] ? snprintf+0xbb/0xf0 [ 1128.370718] ? vsprintf+0x30/0x40 [ 1128.374175] ? set_blocksize+0x2bf/0x340 [ 1128.378242] ? memcpy+0x46/0x50 [ 1128.381528] fill_super+0x894/0x1990 [ 1128.385246] ? gfs2_online_uevent+0x2d0/0x2d0 [ 1128.389741] ? snprintf+0xbb/0xf0 [ 1128.393185] ? vsprintf+0x40/0x40 [ 1128.396647] ? ns_capable_common+0x141/0x170 [ 1128.401046] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 1128.406095] ? set_blocksize+0x2bf/0x340 [ 1128.410151] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 1128.415681] gfs2_mount+0x5db/0x6ee [ 1128.419320] ? fill_super+0x1990/0x1990 [ 1128.423315] ? vfs_parse_fs_string+0x1c5/0x2b0 [ 1128.427891] ? vfs_parse_fs_param+0x4b0/0x4b0 [ 1128.432390] ? fill_super+0x1990/0x1990 [ 1128.436360] legacy_get_tree+0xf2/0x200 [ 1128.440344] vfs_get_tree+0x123/0x450 [ 1128.444149] do_mount+0x1622/0x2fa0 [ 1128.447775] ? copy_mount_string+0x40/0x40 [ 1128.452021] ? kmem_cache_alloc_trace+0x354/0x760 [ 1128.456889] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 1128.462418] ? copy_mount_options+0x30e/0x440 [ 1128.466929] ksys_mount+0xdb/0x150 [ 1128.470467] __x64_sys_mount+0xbe/0x150 [ 1128.474439] do_syscall_64+0x1a3/0x800 [ 1128.478321] ? syscall_return_slowpath+0x5f0/0x5f0 [ 1128.483249] ? prepare_exit_to_usermode+0x232/0x3b0 [ 1128.488264] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 1128.493117] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 1128.498331] RIP: 0033:0x45a93a [ 1128.501520] Code: b8 a6 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 ed 8c fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 0f 83 ca 8c fb ff c3 66 0f 1f 84 00 00 00 00 00 [ 1128.520413] RSP: 002b:00007fdbfe5d2a88 EFLAGS: 00000206 ORIG_RAX: 00000000000000a5 [ 1128.528572] RAX: ffffffffffffffda RBX: 00007fdbfe5d2b30 RCX: 000000000045a93a [ 1128.535834] RDX: 00007fdbfe5d2ad0 RSI: 0000000020000200 RDI: 00007fdbfe5d2af0 [ 1128.543093] RBP: 0000000020000200 R08: 00007fdbfe5d2b30 R09: 00007fdbfe5d2ad0 [ 1128.550348] R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000003 [ 1128.557611] R13: 0000000000000000 R14: 00000000004db380 R15: 00000000ffffffff 03:47:48 executing program 2: syz_mount_image$gfs2(&(0x7f0000000140)='gfs2\x00', &(0x7f0000000200)='./file0\x00', 0x0, 0x0, 0x0, 0x0, 0x0) socketpair$unix(0x1, 0x0, 0x0, 0x0) r0 = syz_open_dev$media(&(0x7f0000000000)='/dev/media#\x00', 0x401, 0x440c1) ioctl$SG_IO(r0, 0x2285, &(0x7f0000000340)={0x53, 0xffffffffffffffff, 0x56, 0x1, @buffer={0x0, 0xd5, &(0x7f0000000040)=""/213}, &(0x7f0000000180)="92eba8cbf68043b76831e154a02d25f4a11f59f1396c8c01a787a7c11b564121405988c29bff782affd4daa2f6c76f12b2bb91c2b5eb4ad0a5c555c084960a6c6004a2f68d66c457ba56c926809cbfcac3c6960589df", &(0x7f0000000240)=""/180, 0x7, 0x10, 0x0, &(0x7f0000000300)}) r1 = syz_genetlink_get_family_id$tipc2(&(0x7f0000000400)='TIPCv2\x00') sendmsg$TIPC_NL_PEER_REMOVE(r0, &(0x7f0000000600)={&(0x7f00000003c0)={0x10, 0x0, 0x0, 0x4010}, 0xc, &(0x7f00000005c0)={&(0x7f0000000440)={0x148, r1, 0x10, 0x70bd25, 0x25dfdbff, {}, [@TIPC_NLA_SOCK={0x28, 0x2, [@TIPC_NLA_SOCK_REF={0x8, 0x2, 0x3}, @TIPC_NLA_SOCK_REF={0x8, 0x2, 0x1}, @TIPC_NLA_SOCK_HAS_PUBL={0x4}, @TIPC_NLA_SOCK_ADDR={0x8, 0x1, 0x8000}, @TIPC_NLA_SOCK_REF={0x8, 0x2, 0x20}]}, @TIPC_NLA_NET={0x24, 0x7, [@TIPC_NLA_NET_NODEID={0xc, 0x3, 0x100000001}, @TIPC_NLA_NET_NODEID_W1={0xc, 0x4, 0x2}, @TIPC_NLA_NET_ID={0x8, 0x1, 0xef}]}, @TIPC_NLA_SOCK={0x30, 0x2, [@TIPC_NLA_SOCK_REF={0x8, 0x2, 0x8}, @TIPC_NLA_SOCK_HAS_PUBL={0x4}, @TIPC_NLA_SOCK_REF={0x8, 0x2, 0x3c72100f}, @TIPC_NLA_SOCK_REF={0x8, 0x2, 0x9}, @TIPC_NLA_SOCK_ADDR={0x8, 0x1, 0x9}, @TIPC_NLA_SOCK_REF={0x8, 0x2, 0x80}]}, @TIPC_NLA_MON={0xc, 0x9, [@TIPC_NLA_MON_REF={0x8, 0x2, 0x7}]}, @TIPC_NLA_MEDIA={0x78, 0x5, [@TIPC_NLA_MEDIA_PROP={0x14, 0x2, [@TIPC_NLA_PROP_TOL={0x8, 0x2, 0x9}, @TIPC_NLA_PROP_MTU={0x8}]}, @TIPC_NLA_MEDIA_NAME={0x8, 0x1, 'udp\x00'}, @TIPC_NLA_MEDIA_PROP={0xc, 0x2, [@TIPC_NLA_PROP_TOL={0x8, 0x2, 0x2}]}, @TIPC_NLA_MEDIA_NAME={0x8, 0x1, 'ib\x00'}, @TIPC_NLA_MEDIA_NAME={0x8, 0x1, 'eth\x00'}, @TIPC_NLA_MEDIA_PROP={0x14, 0x2, [@TIPC_NLA_PROP_PRIO={0x8, 0x1, 0x13}, @TIPC_NLA_PROP_WIN={0x8, 0x3, 0x5}]}, @TIPC_NLA_MEDIA_NAME={0x8, 0x1, 'udp\x00'}, @TIPC_NLA_MEDIA_PROP={0xc, 0x2, [@TIPC_NLA_PROP_WIN={0x8, 0x3, 0x9}]}, @TIPC_NLA_MEDIA_NAME={0x8, 0x1, 'udp\x00'}, @TIPC_NLA_MEDIA_PROP={0xc, 0x2, [@TIPC_NLA_PROP_WIN={0x8, 0x3, 0xfff}]}]}, @TIPC_NLA_BEARER={0x18, 0x1, [@TIPC_NLA_BEARER_PROP={0x14, 0x2, [@TIPC_NLA_PROP_MTU={0x8, 0x4, 0x6}, @TIPC_NLA_PROP_MTU={0x8, 0x4, 0x2}]}]}, @TIPC_NLA_MON={0x1c, 0x9, [@TIPC_NLA_MON_ACTIVATION_THRESHOLD={0x8, 0x1, 0x9}, @TIPC_NLA_MON_ACTIVATION_THRESHOLD={0x8, 0x1, 0x3ff}, @TIPC_NLA_MON_REF={0x8, 0x2, 0x4}]}]}, 0x148}, 0x1, 0x0, 0x0, 0x1}, 0x4004) [ 1128.578968] kobject_add_internal failed for _ with -EEXIST, don't try to register things with the same name in the same directory. [ 1128.593136] gfs2: fsid=_: error -17 adding sysfs files [ 1128.605048] gfs2: fsid=_: Now mounting FS... [ 1128.610150] attempt to access beyond end of device [ 1128.632737] loop4: rw=4096, want=136, limit=54 [ 1128.669729] gfs2: error 10 reading superblock [ 1128.674531] sysfs: cannot create duplicate filename '/fs/gfs2/_' [ 1128.691132] gfs2: fsid=_: can't read superblock [ 1128.698355] gfs2: not a GFS2 filesystem [ 1128.710766] CPU: 0 PID: 22189 Comm: syz-executor3 Not tainted 4.20.0-next-20190103 #4 [ 1128.711400] gfs2: fsid=_: can't read superblock: -5 [ 1128.718736] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 1128.718741] Call Trace: [ 1128.718759] dump_stack+0x1db/0x2d0 [ 1128.718776] ? dump_stack_print_info.cold+0x20/0x20 [ 1128.718792] ? _raw_spin_unlock_irqrestore+0xa4/0xe0 [ 1128.718812] sysfs_warn_dup.cold+0x1c/0x31 [ 1128.718831] sysfs_create_dir_ns+0x2ce/0x330 [ 1128.739365] ? sysfs_create_mount_point+0xa0/0xa0 [ 1128.739380] ? do_raw_spin_trylock+0x270/0x270 [ 1128.739404] kobject_add_internal.cold+0x129/0x6d8 [ 1128.753721] ? kobj_ns_type_registered+0x60/0x60 [ 1128.753736] ? kfree_const+0x59/0x70 [ 1128.753762] ? rcu_read_lock_sched_held+0x110/0x130 [ 1128.753777] ? kfree+0x1fa/0x230 [ 1128.753794] ? kfree_const+0x5e/0x70 [ 1128.753813] kobject_init_and_add+0x101/0x160 [ 1128.797482] ? kobject_add_internal+0x4b0/0x4b0 [ 1128.802150] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 1128.807688] ? vsnprintf+0x368/0x1b10 [ 1128.811500] gfs2_sys_fs_add+0x210/0x500 [ 1128.811516] ? recover_store+0x1a0/0x1a0 [ 1128.811534] ? snprintf+0xbb/0xf0 [ 1128.811548] ? vsprintf+0x30/0x40 [ 1128.811564] ? set_blocksize+0x2bf/0x340 [ 1128.819671] ? memcpy+0x46/0x50 [ 1128.819694] fill_super+0x894/0x1990 [ 1128.819722] ? gfs2_online_uevent+0x2d0/0x2d0 [ 1128.819743] ? snprintf+0xbb/0xf0 [ 1128.826620] ? vsprintf+0x40/0x40 [ 1128.826643] ? ns_capable_common+0x141/0x170 [ 1128.826657] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 1128.826669] ? set_blocksize+0x2bf/0x340 [ 1128.826687] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 1128.834011] gfs2_mount+0x5db/0x6ee [ 1128.834031] ? fill_super+0x1990/0x1990 [ 1128.834088] ? vfs_parse_fs_string+0x1c5/0x2b0 [ 1128.834105] ? vfs_parse_fs_param+0x4b0/0x4b0 [ 1128.834121] ? fill_super+0x1990/0x1990 [ 1128.842309] legacy_get_tree+0xf2/0x200 [ 1128.842343] vfs_get_tree+0x123/0x450 [ 1128.842364] do_mount+0x1622/0x2fa0 [ 1128.849259] ? copy_mount_string+0x40/0x40 [ 1128.849279] ? kmem_cache_alloc_trace+0x354/0x760 [ 1128.849297] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 1128.849313] ? _copy_from_user+0xdd/0x150 [ 1128.849338] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 1128.858739] ? copy_mount_options+0x30e/0x440 [ 1128.858761] ksys_mount+0xdb/0x150 [ 1128.858781] __x64_sys_mount+0xbe/0x150 [ 1128.858800] do_syscall_64+0x1a3/0x800 [ 1128.858817] ? syscall_return_slowpath+0x5f0/0x5f0 [ 1128.945405] ? prepare_exit_to_usermode+0x232/0x3b0 [ 1128.950484] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 1128.955355] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 1128.960558] RIP: 0033:0x45a93a [ 1128.963760] Code: b8 a6 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 ed 8c fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 0f 83 ca 8c fb ff c3 66 0f 1f 84 00 00 00 00 00 [ 1128.982695] RSP: 002b:00007fdbfe5d2a88 EFLAGS: 00000206 ORIG_RAX: 00000000000000a5 [ 1128.990400] RAX: ffffffffffffffda RBX: 00007fdbfe5d2b30 RCX: 000000000045a93a [ 1128.997696] RDX: 00007fdbfe5d2ad0 RSI: 0000000020000200 RDI: 00007fdbfe5d2af0 [ 1129.004964] RBP: 0000000020000200 R08: 00007fdbfe5d2b30 R09: 00007fdbfe5d2ad0 [ 1129.012242] R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000003 03:47:48 executing program 1: r0 = openat$kvm(0xffffffffffffff9c, &(0x7f0000000140)='/dev/kvm\x00', 0x0, 0x0) r1 = ioctl$KVM_CREATE_VM(r0, 0xae01, 0x0) r2 = ioctl$KVM_CREATE_VCPU(r1, 0xae41, 0x0) ioctl$KVM_SET_USER_MEMORY_REGION(r1, 0x4020ae46, &(0x7f0000000400)={0x0, 0x3, 0x0, 0x2000, &(0x7f0000000000/0x2000)=nil}) syz_kvm_setup_cpu$x86(r1, 0xffffffffffffffff, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x0, 0x0, 0xfffffffffffffe78) sendmmsg$unix(0xffffffffffffffff, &(0x7f0000002780)=[{0x0, 0x0, &(0x7f0000001d00)=[{&(0x7f0000000bc0)="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", 0x3c5}], 0x1}], 0x1, 0x0) ioctl$KVM_REGISTER_COALESCED_MMIO(r1, 0x4010ae67, &(0x7f00000000c0)={0x0, 0x15200}) syz_kvm_setup_cpu$x86(0xffffffffffffffff, r2, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x8, 0x0, 0x0) ioctl$KVM_RUN(r2, 0xae80, 0x17) 03:47:48 executing program 5: r0 = socket$inet(0x2, 0x4000000000000001, 0x0) setsockopt$inet_tcp_int(r0, 0x6, 0x80000000000002, &(0x7f0000000040)=0x74, 0x4) bind$inet(r0, &(0x7f0000000180)={0x2, 0x4e23, @multicast1}, 0x10) sendto$inet(r0, 0x0, 0x0, 0x200007fd, &(0x7f0000e68000)={0x2, 0x4e23, @local}, 0x10) write$binfmt_elf64(r0, &(0x7f00000012c0)=ANY=[@ANYBLOB="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"], 0x209) mmap(&(0x7f0000000000/0xb36000)=nil, 0xb36000, 0x3, 0x8031, 0xffffffffffffffff, 0x0) sendmmsg$inet_sctp(r0, &(0x7f0000002600)=[{0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0xf00}], 0x1, 0x0) [ 1129.019506] R13: 0000000000000000 R14: 00000000004db380 R15: 00000000ffffffff 03:47:48 executing program 0: socketpair$unix(0x1, 0x1, 0x0, &(0x7f0000000440)={0xffffffffffffffff, 0xffffffffffffffff}) ioctl$PERF_EVENT_IOC_ENABLE(r0, 0x8912, 0x400200) r1 = openat$kvm(0xffffffffffffff9c, &(0x7f00000000c0)='/dev/kvm\x00', 0x0, 0x0) openat$dlm_monitor(0xffffffffffffff9c, &(0x7f0000000340)='/dev/dlm-monitor\x00', 0x0, 0x0) r2 = ioctl$KVM_CREATE_VM(r1, 0xae01, 0x0) r3 = ioctl$KVM_CREATE_VCPU(r2, 0xae41, 0x0) syz_kvm_setup_cpu$x86(r2, 0xffffffffffffffff, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x0, 0x0, 0x0) syz_kvm_setup_cpu$x86(0xffffffffffffffff, r3, &(0x7f0000000000/0x18000)=nil, &(0x7f00000001c0)=[@text64={0x40, &(0x7f0000000040)="b9800000c00f3235001000000f30f24c0f2c49e8426dc4027d3493b80800003626660f7e676d660f1678b06cc403f9dfbeb70000000bc7442400f5000000c744240284d178bcff1c24f2f347dbe1", 0x4e}], 0x1, 0x48, 0x0, 0x0) pipe2(&(0x7f0000000000), 0x0) ioctl$KVM_RUN(r3, 0xae80, 0x2900) [ 1129.068681] kobject_add_internal failed for _ with -EEXIST, don't try to register things with the same name in the same directory. 03:47:48 executing program 4: syz_mount_image$gfs2(&(0x7f0000000140)='gfs2\x00', &(0x7f0000000200)='./file0\x00', 0x125df, 0x0, 0x0, 0x0, &(0x7f00000003c0)={[{@locktable={'locktable', 0x3d, '/'}}, {@lockproto_nolock='lockproto=lock_nolock'}]}) socketpair$unix(0x1, 0x1, 0x0, &(0x7f0000000180)) [ 1129.109154] gfs2: fsid=_: error -17 adding sysfs files [ 1129.117412] gfs2: not a GFS2 filesystem 03:47:48 executing program 2: pivot_root(&(0x7f0000000180)='./file0\x00', &(0x7f0000000040)='./file0\x00') r0 = getpgrp(0xffffffffffffffff) ioctl$TIOCGPGRP(0xffffffffffffff9c, 0x540f, &(0x7f0000000000)=0x0) r2 = socket$can_bcm(0x1d, 0x2, 0x2) r3 = syz_open_dev$vivid(&(0x7f0000000080)='/dev/video#\x00', 0x2, 0x2) kcmp(r0, r1, 0x1, r2, r3) syz_mount_image$gfs2(&(0x7f0000000140)='gfs2\x00', &(0x7f0000000200)='./file0\x00', 0x0, 0x0, 0x0, 0x0, 0x0) openat$vga_arbiter(0xffffffffffffff9c, &(0x7f00000001c0)='/dev/vga_arbiter\x00', 0x8401, 0x0) socketpair$unix(0x1, 0x0, 0x0, 0x0) 03:47:48 executing program 3: syz_mount_image$gfs2(&(0x7f0000000140)='gfs2 ', &(0x7f0000000200)='./file0\x00', 0x0, 0x0, 0x0, 0x0, &(0x7f00000003c0)={[{@locktable={'locktable', 0x3d, '/'}}, {@lockproto_nolock='lockproto=lock_nolock'}]}) [ 1129.343501] gfs2: fsid=_: Trying to join cluster "lock_nolock", "_" [ 1129.400242] gfs2: not a GFS2 filesystem [ 1129.409837] gfs2: fsid=_: Now mounting FS... [ 1129.425094] gfs2: not a GFS2 filesystem [ 1129.445840] gfs2: fsid=_: can't read superblock [ 1129.462797] gfs2: fsid=_: can't read superblock: -22 03:47:49 executing program 1: r0 = openat$kvm(0xffffffffffffff9c, &(0x7f0000000140)='/dev/kvm\x00', 0x0, 0x0) r1 = ioctl$KVM_CREATE_VM(r0, 0xae01, 0x0) r2 = ioctl$KVM_CREATE_VCPU(r1, 0xae41, 0x0) ioctl$KVM_SET_USER_MEMORY_REGION(r1, 0x4020ae46, &(0x7f0000000400)={0x0, 0x3, 0x0, 0x2000, &(0x7f0000000000/0x2000)=nil}) syz_kvm_setup_cpu$x86(r1, 0xffffffffffffffff, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x0, 0x0, 0xfffffffffffffe78) sendmmsg$unix(0xffffffffffffffff, &(0x7f0000002780)=[{0x0, 0x0, &(0x7f0000001d00)=[{&(0x7f0000000bc0)="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", 0x3c5}], 0x1}], 0x1, 0x0) ioctl$KVM_REGISTER_COALESCED_MMIO(r1, 0x4010ae67, &(0x7f00000000c0)={0x0, 0x15200}) syz_kvm_setup_cpu$x86(0xffffffffffffffff, r2, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x8, 0x0, 0x0) ioctl$KVM_RUN(r2, 0xae80, 0x8c0f000000000000) 03:47:49 executing program 0: socketpair$unix(0x1, 0x1, 0x0, &(0x7f0000000440)={0xffffffffffffffff, 0xffffffffffffffff}) ioctl$PERF_EVENT_IOC_ENABLE(r0, 0x8912, 0x400200) r1 = openat$kvm(0xffffffffffffff9c, &(0x7f00000000c0)='/dev/kvm\x00', 0x0, 0x0) openat$dlm_monitor(0xffffffffffffff9c, &(0x7f0000000340)='/dev/dlm-monitor\x00', 0x0, 0x0) r2 = ioctl$KVM_CREATE_VM(r1, 0xae01, 0x0) r3 = ioctl$KVM_CREATE_VCPU(r2, 0xae41, 0x0) syz_kvm_setup_cpu$x86(r2, 0xffffffffffffffff, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x0, 0x0, 0x0) syz_kvm_setup_cpu$x86(0xffffffffffffffff, r3, &(0x7f0000000000/0x18000)=nil, &(0x7f00000001c0)=[@text64={0x40, &(0x7f0000000040)="b9800000c00f3235001000000f30f24c0f2c49e8426dc4027d3493b80800003626660f7e676d660f1678b06cc403f9dfbeb70000000bc7442400f5000000c744240284d178bcff1c24f2f347dbe1", 0x4e}], 0x1, 0x48, 0x0, 0x0) pipe2(&(0x7f0000000000), 0x0) ioctl$KVM_RUN(r3, 0xae80, 0xe803) [ 1129.489143] gfs2: not a GFS2 filesystem 03:47:49 executing program 2: r0 = openat$autofs(0xffffffffffffff9c, &(0x7f0000000000)='/dev/autofs\x00', 0x100, 0x0) ioctl$SIOCAX25DELFWD(r0, 0x89eb, &(0x7f0000000040)={@bcast, @default}) syz_mount_image$gfs2(&(0x7f0000000140)='gfs2\x00', &(0x7f0000000200)='./file0\x00', 0x0, 0x0, 0x0, 0x0, 0x0) socketpair$unix(0x1, 0x5, 0x0, 0x0) 03:47:49 executing program 3: syz_mount_image$gfs2(&(0x7f0000000140)='gfs2p', &(0x7f0000000200)='./file0\x00', 0x0, 0x0, 0x0, 0x0, &(0x7f00000003c0)={[{@locktable={'locktable', 0x3d, '/'}}, {@lockproto_nolock='lockproto=lock_nolock'}]}) [ 1129.743699] gfs2: fsid=_: Trying to join cluster "lock_nolock", "_" [ 1129.765064] gfs2: fsid=_: Now mounting FS... [ 1129.790861] gfs2: not a GFS2 filesystem [ 1129.808805] gfs2: not a GFS2 filesystem [ 1129.827297] gfs2: fsid=_: can't read superblock [ 1129.847759] gfs2: fsid=_: can't read superblock: -22 [ 1129.877857] gfs2: not a GFS2 filesystem 03:47:49 executing program 1: r0 = openat$kvm(0xffffffffffffff9c, &(0x7f0000000140)='/dev/kvm\x00', 0x0, 0x0) r1 = ioctl$KVM_CREATE_VM(r0, 0xae01, 0x0) r2 = ioctl$KVM_CREATE_VCPU(r1, 0xae41, 0x0) ioctl$KVM_SET_USER_MEMORY_REGION(r1, 0x4020ae46, &(0x7f0000000400)={0x0, 0x3, 0x0, 0x2000, &(0x7f0000000000/0x2000)=nil}) syz_kvm_setup_cpu$x86(r1, 0xffffffffffffffff, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x0, 0x0, 0xfffffffffffffe78) sendmmsg$unix(0xffffffffffffffff, &(0x7f0000002780)=[{0x0, 0x0, &(0x7f0000001d00)=[{&(0x7f0000000bc0)="b474ac0450ac6a2ff5ba4c1a19990e818d6fb646a5739e09c636550fdd39d0316e215a5a9427ac426da0b375844fb7f5ee5130d0b57cdab9af6f5f0d39c1787ec9ecde6263664c6a9859b7a0c4cbc99a05184da950f370cf65a18bff7975c0c12ca4227baa2164d031a5472d7f581c6f7eedd103d8fc89b6b4b52e5d3da0817eec8c57f722e356068b99a056ab6a693b9eebe38d75170491e07f9f69573b02b1a048f29e39cd24fed99e8606ffcbe4f617f48370ec62bd327cdfb9da8e8fef232b2e8f8f6868bb1781eab4c294befd65d9a336123bd34be8f256b5fc0420aa6e930f292a9a06365daaebd0bcaaaf5e0c12167aad0c62a48666383ee58b37df8077c5d2d5298d5247e240a78ff2543147129775f6d4a872df80d9da66c2a0a169df65141cbe88b1e280d60f6e11b25a0b5bb1bdd430378761d547f3ff7e42cc84c849e66004e30905d908e352a53f95bca84a68a6ce5ee82b69c939a196a7060bee28d8dee1ed52ae04b228bedf9302df44cc957780e42c2784d18e3695ee5e73dbe385331494af3cbcf8952e85469e9566c32692c0ceae8dab7b9553b5e8aa66edbad2ed828ba2a665a48a2822d9dc538863aea705c926c5a12fee84db545a36a13281e09e82c06211cc195cb4409bedfb7cf22f6c01fba9720bc4f447da73bb95bab6c056ce51bbc9d5b6622c54152e853f9639d2db2a5992e0f0e8f77a2e5efcfd139869cbdc902622399035d6ab8c22e33605be6850356be97ac05588720e1e215fbf5cb6633f0894e0a4dbd28708cac77792a31b00f47d18cebcb9114f1b0ffd66b587c5f9ba086fc530c6a0ac561068de208f18a3b6adc47f04bd63bd4a31544eb953398ddee5b5e4533aa529947aa46e7e517ff719e559c106f8afc570019f272a9f2d2699c7384612854de44dc40bb33aafee4e5fab1c06ceeffec56782452589f80c3946e6631c591e7f82af7e3a6422e0f35b0847f0a3049ee29b09f8aadf59c96a99576be85d6ddcf8c4d82373355add27397517402a56fd36bf877a53731413c30786431262705fb01511a778482cd85b60323b683e0e9d2f06b57678ddcf06f6da03f818e7f0b4db7045527f6e00fa26fe586fe0fcc72024fad6bab1739f6d7980d21f1fac0e7f53ee4cb254349b93a89f5695be91e5c586411b18f3f11298d979abdf4dd4796b181e623189aa73182c4c5ff346545168a520241ce23e08ade26085f654537258efaacfe1a64b2261c5180eb7c01ca6f4dc0f08f98ec12c06036278eff4c8d3b852bb2022be745861268ffbe0bb37c45452d2ac97aa6cb81db9f428688e6eab0e85ba6eb2eaecf4e8e137a2101f04b201258a71d857194610", 0x3c5}], 0x1}], 0x1, 0x0) ioctl$KVM_REGISTER_COALESCED_MMIO(r1, 0x4010ae67, &(0x7f00000000c0)={0x0, 0x15200}) syz_kvm_setup_cpu$x86(0xffffffffffffffff, r2, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x8, 0x0, 0x0) ioctl$KVM_RUN(r2, 0xae80, 0xc00000000000000) 03:47:49 executing program 0: socketpair$unix(0x1, 0x1, 0x0, &(0x7f0000000440)={0xffffffffffffffff, 0xffffffffffffffff}) ioctl$PERF_EVENT_IOC_ENABLE(r0, 0x8912, 0x400200) r1 = openat$kvm(0xffffffffffffff9c, &(0x7f00000000c0)='/dev/kvm\x00', 0x0, 0x0) openat$dlm_monitor(0xffffffffffffff9c, &(0x7f0000000340)='/dev/dlm-monitor\x00', 0x0, 0x0) r2 = ioctl$KVM_CREATE_VM(r1, 0xae01, 0x0) r3 = ioctl$KVM_CREATE_VCPU(r2, 0xae41, 0x0) syz_kvm_setup_cpu$x86(r2, 0xffffffffffffffff, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x0, 0x0, 0x0) syz_kvm_setup_cpu$x86(0xffffffffffffffff, r3, &(0x7f0000000000/0x18000)=nil, &(0x7f00000001c0)=[@text64={0x40, &(0x7f0000000040)="b9800000c00f3235001000000f30f24c0f2c49e8426dc4027d3493b80800003626660f7e676d660f1678b06cc403f9dfbeb70000000bc7442400f5000000c744240284d178bcff1c24f2f347dbe1", 0x4e}], 0x1, 0x48, 0x0, 0x0) pipe2(&(0x7f0000000000), 0x0) ioctl$KVM_RUN(r3, 0xae80, 0xa0008000) 03:47:49 executing program 2: socketpair$unix(0x1, 0x2, 0x0, 0x0) 03:47:49 executing program 5: r0 = socket$inet(0x2, 0x4000000000000001, 0x0) setsockopt$inet_tcp_int(r0, 0x6, 0x80000000000002, &(0x7f0000000040)=0x74, 0x4) bind$inet(r0, &(0x7f0000000180)={0x2, 0x4e23, @multicast1}, 0x10) sendto$inet(r0, 0x0, 0x0, 0x200007fd, &(0x7f0000e68000)={0x2, 0x4e23, @local}, 0x10) write$binfmt_elf64(r0, &(0x7f00000012c0)=ANY=[@ANYBLOB="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"], 0x209) mmap(&(0x7f0000000000/0xb36000)=nil, 0xb36000, 0x3, 0x8031, 0xffffffffffffffff, 0x0) sendmmsg$inet_sctp(r0, &(0x7f0000002600)=[{0x0, 0x0, &(0x7f0000000240), 0x0, 0x0, 0x0, 0xf00}], 0x1, 0x0) 03:47:49 executing program 4: syz_mount_image$gfs2(&(0x7f0000000140)='gfs2\x00', &(0x7f0000000200)='./file0\x00', 0x2100, 0x0, 0x0, 0x0, &(0x7f00000003c0)={[{@locktable={'locktable', 0x3d, '/'}}, {@lockproto_nolock='lockproto=lock_nolock'}]}) socketpair$unix(0x1, 0x1, 0x0, &(0x7f0000000180)) 03:47:49 executing program 3: syz_mount_image$gfs2(&(0x7f0000000140)='gfs2\x00', &(0x7f0000000200)='./file0\x00', 0x0, 0x0, 0x0, 0x0, &(0x7f00000003c0)={[{@locktable={'locktable', 0x3d, '/'}}, {@lockproto_nolock='lockproto=lock_nolock'}]}) 03:47:50 executing program 1: r0 = openat$kvm(0xffffffffffffff9c, &(0x7f0000000140)='/dev/kvm\x00', 0x0, 0x0) r1 = ioctl$KVM_CREATE_VM(r0, 0xae01, 0x0) r2 = ioctl$KVM_CREATE_VCPU(r1, 0xae41, 0x0) ioctl$KVM_SET_USER_MEMORY_REGION(r1, 0x4020ae46, &(0x7f0000000400)={0x0, 0x3, 0x0, 0x2000, &(0x7f0000000000/0x2000)=nil}) syz_kvm_setup_cpu$x86(r1, 0xffffffffffffffff, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x0, 0x0, 0xfffffffffffffe78) sendmmsg$unix(0xffffffffffffffff, &(0x7f0000002780)=[{0x0, 0x0, &(0x7f0000001d00)=[{&(0x7f0000000bc0)="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", 0x3c5}], 0x1}], 0x1, 0x0) ioctl$KVM_REGISTER_COALESCED_MMIO(r1, 0x4010ae67, &(0x7f00000000c0)={0x0, 0x15200}) syz_kvm_setup_cpu$x86(0xffffffffffffffff, r2, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x8, 0x0, 0x0) ioctl$KVM_RUN(r2, 0xae80, 0xec0f00) [ 1130.303544] gfs2: fsid=_: Trying to join cluster "lock_nolock", "_" [ 1130.342066] gfs2: fsid=_: Now mounting FS... [ 1130.360635] attempt to access beyond end of device [ 1130.373932] sysfs: cannot create duplicate filename '/fs/gfs2/_' [ 1130.381477] CPU: 1 PID: 22308 Comm: syz-executor3 Not tainted 4.20.0-next-20190103 #4 [ 1130.389482] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 1130.398835] Call Trace: [ 1130.401454] dump_stack+0x1db/0x2d0 [ 1130.405124] ? dump_stack_print_info.cold+0x20/0x20 [ 1130.410147] ? _raw_spin_unlock_irqrestore+0xa4/0xe0 [ 1130.415265] sysfs_warn_dup.cold+0x1c/0x31 [ 1130.416425] loop4: rw=4096, want=136, limit=16 [ 1130.419543] sysfs_create_dir_ns+0x2ce/0x330 [ 1130.419572] ? sysfs_create_mount_point+0xa0/0xa0 [ 1130.419587] ? do_raw_spin_trylock+0x270/0x270 [ 1130.419615] kobject_add_internal.cold+0x129/0x6d8 [ 1130.419656] ? kobj_ns_type_registered+0x60/0x60 [ 1130.419671] ? kfree_const+0x59/0x70 [ 1130.436653] gfs2: error 10 reading superblock [ 1130.438024] ? rcu_read_lock_sched_held+0x110/0x130 [ 1130.438039] ? kfree+0x1fa/0x230 [ 1130.438066] ? kfree_const+0x5e/0x70 [ 1130.438087] kobject_init_and_add+0x101/0x160 [ 1130.438103] ? kobject_add_internal+0x4b0/0x4b0 [ 1130.438121] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 1130.438136] ? vsnprintf+0x368/0x1b10 [ 1130.446990] gfs2: fsid=_: can't read superblock [ 1130.447811] gfs2_sys_fs_add+0x210/0x500 [ 1130.451788] gfs2: fsid=_: can't read superblock: -5 [ 1130.455974] ? recover_store+0x1a0/0x1a0 [ 1130.455991] ? snprintf+0xbb/0xf0 [ 1130.456004] ? vsprintf+0x30/0x40 [ 1130.456020] ? set_blocksize+0x2bf/0x340 [ 1130.456038] ? memcpy+0x46/0x50 [ 1130.456068] fill_super+0x894/0x1990 [ 1130.456092] ? gfs2_online_uevent+0x2d0/0x2d0 [ 1130.456112] ? snprintf+0xbb/0xf0 [ 1130.456123] ? vsprintf+0x40/0x40 [ 1130.456140] ? ns_capable_common+0x141/0x170 [ 1130.456151] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 1130.456160] ? set_blocksize+0x2bf/0x340 [ 1130.456172] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 1130.456184] gfs2_mount+0x5db/0x6ee [ 1130.456196] ? fill_super+0x1990/0x1990 [ 1130.456227] ? vfs_parse_fs_string+0x1c5/0x2b0 [ 1130.456240] ? vfs_parse_fs_param+0x4b0/0x4b0 [ 1130.456251] ? fill_super+0x1990/0x1990 [ 1130.456262] legacy_get_tree+0xf2/0x200 [ 1130.456278] vfs_get_tree+0x123/0x450 [ 1130.456293] do_mount+0x1622/0x2fa0 [ 1130.456311] ? copy_mount_string+0x40/0x40 [ 1130.456325] ? kmem_cache_alloc_trace+0x354/0x760 [ 1130.456345] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 1130.456355] ? copy_mount_options+0x30e/0x440 [ 1130.456371] ksys_mount+0xdb/0x150 [ 1130.456385] __x64_sys_mount+0xbe/0x150 [ 1130.456400] do_syscall_64+0x1a3/0x800 [ 1130.456413] ? syscall_return_slowpath+0x5f0/0x5f0 [ 1130.456426] ? prepare_exit_to_usermode+0x232/0x3b0 [ 1130.456441] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 1130.456457] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 1130.456466] RIP: 0033:0x45a93a [ 1130.456478] Code: b8 a6 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 ed 8c fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 0f 83 ca 8c fb ff c3 66 0f 1f 84 00 00 00 00 00 03:47:50 executing program 0: socketpair$unix(0x1, 0x1, 0x0, &(0x7f0000000440)={0xffffffffffffffff, 0xffffffffffffffff}) ioctl$PERF_EVENT_IOC_ENABLE(r0, 0x8912, 0x400200) r1 = openat$kvm(0xffffffffffffff9c, &(0x7f00000000c0)='/dev/kvm\x00', 0x0, 0x0) openat$dlm_monitor(0xffffffffffffff9c, &(0x7f0000000340)='/dev/dlm-monitor\x00', 0x0, 0x0) r2 = ioctl$KVM_CREATE_VM(r1, 0xae01, 0x0) r3 = ioctl$KVM_CREATE_VCPU(r2, 0xae41, 0x0) syz_kvm_setup_cpu$x86(r2, 0xffffffffffffffff, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x0, 0x0, 0x0) syz_kvm_setup_cpu$x86(0xffffffffffffffff, r3, &(0x7f0000000000/0x18000)=nil, &(0x7f00000001c0)=[@text64={0x40, &(0x7f0000000040)="b9800000c00f3235001000000f30f24c0f2c49e8426dc4027d3493b80800003626660f7e676d660f1678b06cc403f9dfbeb70000000bc7442400f5000000c744240284d178bcff1c24f2f347dbe1", 0x4e}], 0x1, 0x48, 0x0, 0x0) pipe2(&(0x7f0000000000), 0x0) ioctl$KVM_RUN(r3, 0xae80, 0x8000000000) 03:47:50 executing program 2: syz_mount_image$gfs2(&(0x7f0000000140)='gfs2\x00', &(0x7f0000000200)='./file0\x00', 0x0, 0x0, 0x0, 0x0, 0x0) socketpair$unix(0x1, 0x0, 0x0, 0x0) r0 = openat$hwrng(0xffffffffffffff9c, &(0x7f0000000000)='/dev/hwrng\x00', 0x208180, 0x0) rmdir(&(0x7f0000000080)='./file0\x00') umount2(&(0x7f00000000c0)='./file0\x00', 0x0) timerfd_gettime(r0, &(0x7f0000000040)) [ 1130.456484] RSP: 002b:00007fdbfe5d2a88 EFLAGS: 00000206 ORIG_RAX: 00000000000000a5 [ 1130.456494] RAX: ffffffffffffffda RBX: 00007fdbfe5d2b30 RCX: 000000000045a93a [ 1130.456500] RDX: 00007fdbfe5d2ad0 RSI: 0000000020000200 RDI: 00007fdbfe5d2af0 [ 1130.456507] RBP: 0000000020000200 R08: 00007fdbfe5d2b30 R09: 00007fdbfe5d2ad0 [ 1130.456513] R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000003 [ 1130.456519] R13: 0000000000000000 R14: 00000000004db380 R15: 00000000ffffffff [ 1130.668078] kobject_add_internal failed for _ with -EEXIST, don't try to register things with the same name in the same directory. [ 1130.783809] gfs2: fsid=_: error -17 adding sysfs files [ 1130.821981] gfs2: not a GFS2 filesystem 03:47:50 executing program 1: r0 = openat$kvm(0xffffffffffffff9c, &(0x7f0000000140)='/dev/kvm\x00', 0x0, 0x0) r1 = ioctl$KVM_CREATE_VM(r0, 0xae01, 0x0) r2 = ioctl$KVM_CREATE_VCPU(r1, 0xae41, 0x0) ioctl$KVM_SET_USER_MEMORY_REGION(r1, 0x4020ae46, &(0x7f0000000400)={0x0, 0x3, 0x0, 0x2000, &(0x7f0000000000/0x2000)=nil}) syz_kvm_setup_cpu$x86(r1, 0xffffffffffffffff, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x0, 0x0, 0xfffffffffffffe78) sendmmsg$unix(0xffffffffffffffff, &(0x7f0000002780)=[{0x0, 0x0, &(0x7f0000001d00)=[{&(0x7f0000000bc0)="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", 0x3c5}], 0x1}], 0x1, 0x0) ioctl$KVM_REGISTER_COALESCED_MMIO(r1, 0x4010ae67, &(0x7f00000000c0)={0x0, 0x15200}) syz_kvm_setup_cpu$x86(0xffffffffffffffff, r2, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x8, 0x0, 0x0) ioctl$KVM_RUN(r2, 0xae80, 0xffc6) 03:47:50 executing program 0: socketpair$unix(0x1, 0x1, 0x0, &(0x7f0000000440)={0xffffffffffffffff, 0xffffffffffffffff}) ioctl$PERF_EVENT_IOC_ENABLE(r0, 0x8912, 0x400200) r1 = openat$kvm(0xffffffffffffff9c, &(0x7f00000000c0)='/dev/kvm\x00', 0x0, 0x0) openat$dlm_monitor(0xffffffffffffff9c, &(0x7f0000000340)='/dev/dlm-monitor\x00', 0x0, 0x0) r2 = ioctl$KVM_CREATE_VM(r1, 0xae01, 0x0) r3 = ioctl$KVM_CREATE_VCPU(r2, 0xae41, 0x0) syz_kvm_setup_cpu$x86(r2, 0xffffffffffffffff, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x0, 0x0, 0x0) syz_kvm_setup_cpu$x86(0xffffffffffffffff, r3, &(0x7f0000000000/0x18000)=nil, &(0x7f00000001c0)=[@text64={0x40, &(0x7f0000000040)="b9800000c00f3235001000000f30f24c0f2c49e8426dc4027d3493b80800003626660f7e676d660f1678b06cc403f9dfbeb70000000bc7442400f5000000c744240284d178bcff1c24f2f347dbe1", 0x4e}], 0x1, 0x48, 0x0, 0x0) pipe2(&(0x7f0000000000), 0x0) ioctl$KVM_RUN(r3, 0xae80, 0x5000000) [ 1130.914449] sysfs: cannot create duplicate filename '/fs/gfs2/_' [ 1130.945396] gfs2: not a GFS2 filesystem [ 1130.965520] CPU: 0 PID: 22308 Comm: syz-executor3 Not tainted 4.20.0-next-20190103 #4 [ 1130.973494] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 1130.982843] Call Trace: [ 1130.985444] dump_stack+0x1db/0x2d0 [ 1130.985474] ? dump_stack_print_info.cold+0x20/0x20 [ 1130.994100] ? _raw_spin_unlock_irqrestore+0xa4/0xe0 [ 1130.999213] sysfs_warn_dup.cold+0x1c/0x31 [ 1130.999231] sysfs_create_dir_ns+0x2ce/0x330 [ 1130.999247] ? sysfs_create_mount_point+0xa0/0xa0 [ 1130.999263] ? do_raw_spin_trylock+0x270/0x270 [ 1131.017327] kobject_add_internal.cold+0x129/0x6d8 [ 1131.017349] ? kobj_ns_type_registered+0x60/0x60 [ 1131.017365] ? kfree_const+0x59/0x70 [ 1131.030791] ? rcu_read_lock_sched_held+0x110/0x130 [ 1131.030807] ? kfree+0x1fa/0x230 [ 1131.030827] ? kfree_const+0x5e/0x70 [ 1131.030847] kobject_init_and_add+0x101/0x160 [ 1131.030863] ? kobject_add_internal+0x4b0/0x4b0 [ 1131.030881] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 1131.052089] ? vsnprintf+0x368/0x1b10 [ 1131.052116] gfs2_sys_fs_add+0x210/0x500 [ 1131.052130] ? recover_store+0x1a0/0x1a0 [ 1131.052146] ? snprintf+0xbb/0xf0 [ 1131.072988] ? vsprintf+0x30/0x40 [ 1131.073006] ? set_blocksize+0x2bf/0x340 [ 1131.073025] ? memcpy+0x46/0x50 [ 1131.073046] fill_super+0x894/0x1990 [ 1131.073084] ? gfs2_online_uevent+0x2d0/0x2d0 [ 1131.073104] ? snprintf+0xbb/0xf0 [ 1131.080597] ? vsprintf+0x40/0x40 [ 1131.080618] ? ns_capable_common+0x141/0x170 [ 1131.080633] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 1131.108376] ? set_blocksize+0x2bf/0x340 [ 1131.112459] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 1131.118021] gfs2_mount+0x5db/0x6ee [ 1131.121709] ? fill_super+0x1990/0x1990 [ 1131.125738] ? vfs_parse_fs_string+0x1c5/0x2b0 [ 1131.130340] ? vfs_parse_fs_param+0x4b0/0x4b0 [ 1131.134848] ? fill_super+0x1990/0x1990 [ 1131.138831] legacy_get_tree+0xf2/0x200 [ 1131.142835] vfs_get_tree+0x123/0x450 [ 1131.142856] do_mount+0x1622/0x2fa0 [ 1131.142880] ? copy_mount_string+0x40/0x40 [ 1131.150287] ? kmem_cache_alloc_trace+0x354/0x760 [ 1131.159354] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 1131.164905] ? copy_mount_options+0x30e/0x440 [ 1131.169412] ksys_mount+0xdb/0x150 [ 1131.172977] __x64_sys_mount+0xbe/0x150 [ 1131.176981] do_syscall_64+0x1a3/0x800 [ 1131.180885] ? syscall_return_slowpath+0x5f0/0x5f0 [ 1131.185855] ? prepare_exit_to_usermode+0x232/0x3b0 [ 1131.190912] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 1131.195771] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 1131.200962] RIP: 0033:0x45a93a [ 1131.204150] Code: b8 a6 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 ed 8c fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 0f 83 ca 8c fb ff c3 66 0f 1f 84 00 00 00 00 00 [ 1131.223063] RSP: 002b:00007fdbfe5d2a88 EFLAGS: 00000206 ORIG_RAX: 00000000000000a5 [ 1131.230768] RAX: ffffffffffffffda RBX: 00007fdbfe5d2b30 RCX: 000000000045a93a [ 1131.238034] RDX: 00007fdbfe5d2ad0 RSI: 0000000020000200 RDI: 00007fdbfe5d2af0 [ 1131.245309] RBP: 0000000020000200 R08: 00007fdbfe5d2b30 R09: 00007fdbfe5d2ad0 [ 1131.252580] R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000003 [ 1131.259843] R13: 0000000000000000 R14: 00000000004db380 R15: 00000000ffffffff 03:47:50 executing program 5: r0 = socket$inet(0x2, 0x4000000000000001, 0x0) setsockopt$inet_tcp_int(r0, 0x6, 0x80000000000002, &(0x7f0000000040)=0x74, 0x4) bind$inet(r0, &(0x7f0000000180)={0x2, 0x4e23, @multicast1}, 0x10) sendto$inet(r0, 0x0, 0x0, 0x200007fd, &(0x7f0000e68000)={0x2, 0x4e23, @local}, 0x10) write$binfmt_elf64(r0, &(0x7f00000012c0)=ANY=[@ANYBLOB="7f454c4601000500000000000000000000000300000000008b0300000000000040000000000000001901000000000000cf0000000100380002000100c70a010151e57474090e00000300000000000000ff0f00000000000000000080000000000600000000000000db0a000000000000d616000000000000b27e2b7d90630ff79f047e22afbe739a615db84a0058ce3572d99ea10910ec6bf6ba57404bb35b88227009c25cfc6802a2b9a17a285b27f3e6a66f3f7d712cc9d3daf7e5b378f1f1aea47383c1b2213503c6bf3f6e73ca712d88eb1852562e8796913d6a3236e2532dcdade6597d5c20651c4520ce1ade1bd110422aba4e4364e2cf9589e661ad0ff96218d75fe22a793040b35188c96f2ca9fe626500000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000f52687e000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000901a50be12753000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"], 0x209) mmap(&(0x7f0000000000/0xb36000)=nil, 0xb36000, 0x3, 0x8031, 0xffffffffffffffff, 0x0) sendmmsg$inet_sctp(r0, &(0x7f0000002600)=[{0x0, 0x0, &(0x7f0000000240), 0x0, 0x0, 0x0, 0xf00}], 0x1, 0x0) [ 1131.274714] kobject_add_internal failed for _ with -EEXIST, don't try to register things with the same name in the same directory. [ 1131.286794] gfs2: fsid=_: error -17 adding sysfs files 03:47:51 executing program 1: r0 = openat$kvm(0xffffffffffffff9c, &(0x7f0000000140)='/dev/kvm\x00', 0x0, 0x0) r1 = ioctl$KVM_CREATE_VM(r0, 0xae01, 0x0) r2 = ioctl$KVM_CREATE_VCPU(r1, 0xae41, 0x0) ioctl$KVM_SET_USER_MEMORY_REGION(r1, 0x4020ae46, &(0x7f0000000400)={0x0, 0x3, 0x0, 0x2000, &(0x7f0000000000/0x2000)=nil}) syz_kvm_setup_cpu$x86(r1, 0xffffffffffffffff, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x0, 0x0, 0xfffffffffffffe78) sendmmsg$unix(0xffffffffffffffff, &(0x7f0000002780)=[{0x0, 0x0, &(0x7f0000001d00)=[{&(0x7f0000000bc0)="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", 0x3c5}], 0x1}], 0x1, 0x0) ioctl$KVM_REGISTER_COALESCED_MMIO(r1, 0x4010ae67, &(0x7f00000000c0)={0x0, 0x15200}) syz_kvm_setup_cpu$x86(0xffffffffffffffff, r2, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x8, 0x0, 0x0) ioctl$KVM_RUN(r2, 0xae80, 0x8c0f) 03:47:51 executing program 3: syz_mount_image$gfs2(&(0x7f0000000140)='gfs2\x00', &(0x7f0000000200)='./file0\x00', 0x0, 0x0, 0x0, 0x0, &(0x7f00000003c0)={[{@locktable={'locktable', 0x3d, '/'}}, {@lockproto_nolock='lockproto=lock_nolock'}]}) 03:47:51 executing program 2: syz_mount_image$gfs2(&(0x7f0000000140)='gfs2\x00', &(0x7f0000000200)='./file0\x00', 0x0, 0x0, 0x0, 0x0, 0x0) r0 = openat$proc_capi20(0xffffffffffffff9c, &(0x7f0000000000)='/proc/capi/capi20\x00', 0x0, 0x0) ioctl$KVM_SET_DEVICE_ATTR(r0, 0x4018aee1, &(0x7f0000000180)={0x0, 0x0, 0x3, &(0x7f0000000100)=0xa9}) r1 = syz_open_dev$media(&(0x7f0000000080)='/dev/media#\x00', 0xffffbffffffffffe, 0x0) getsockname$llc(r1, &(0x7f0000000040)={0x1a, 0x0, 0x0, 0x0, 0x0, 0x0, @remote}, &(0x7f00000000c0)=0x10) socketpair$unix(0x1, 0x400000000003, 0x0, 0x0) 03:47:51 executing program 4: syz_mount_image$gfs2(&(0x7f0000000140)='gfs2\x00', &(0x7f0000000200)='./file0\x00', 0x2200, 0x0, 0x0, 0x0, &(0x7f00000003c0)={[{@locktable={'locktable', 0x3d, '/'}}, {@lockproto_nolock='lockproto=lock_nolock'}]}) socketpair$unix(0x1, 0x1, 0x0, &(0x7f0000000180)) [ 1131.508383] gfs2: fsid=_: Trying to join cluster "lock_nolock", "_" [ 1131.581255] sysfs: cannot create duplicate filename '/fs/gfs2/_' [ 1131.588859] gfs2: fsid=_: Now mounting FS... [ 1131.615343] gfs2: not a GFS2 filesystem [ 1131.635108] gfs2: not a GFS2 filesystem [ 1131.641493] CPU: 0 PID: 22363 Comm: syz-executor4 Not tainted 4.20.0-next-20190103 #4 [ 1131.649484] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 1131.658844] Call Trace: [ 1131.661452] dump_stack+0x1db/0x2d0 [ 1131.665103] ? dump_stack_print_info.cold+0x20/0x20 [ 1131.670146] ? _raw_spin_unlock_irqrestore+0xa4/0xe0 [ 1131.675288] sysfs_warn_dup.cold+0x1c/0x31 [ 1131.679559] sysfs_create_dir_ns+0x2ce/0x330 03:47:51 executing program 0: socketpair$unix(0x1, 0x1, 0x0, &(0x7f0000000440)={0xffffffffffffffff, 0xffffffffffffffff}) ioctl$PERF_EVENT_IOC_ENABLE(r0, 0x8912, 0x400200) r1 = openat$kvm(0xffffffffffffff9c, &(0x7f00000000c0)='/dev/kvm\x00', 0x0, 0x0) openat$dlm_monitor(0xffffffffffffff9c, &(0x7f0000000340)='/dev/dlm-monitor\x00', 0x0, 0x0) r2 = ioctl$KVM_CREATE_VM(r1, 0xae01, 0x0) r3 = ioctl$KVM_CREATE_VCPU(r2, 0xae41, 0x0) syz_kvm_setup_cpu$x86(r2, 0xffffffffffffffff, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x0, 0x0, 0x0) syz_kvm_setup_cpu$x86(0xffffffffffffffff, r3, &(0x7f0000000000/0x18000)=nil, &(0x7f00000001c0)=[@text64={0x40, &(0x7f0000000040)="b9800000c00f3235001000000f30f24c0f2c49e8426dc4027d3493b80800003626660f7e676d660f1678b06cc403f9dfbeb70000000bc7442400f5000000c744240284d178bcff1c24f2f347dbe1", 0x4e}], 0x1, 0x48, 0x0, 0x0) pipe2(&(0x7f0000000000), 0x0) ioctl$KVM_RUN(r3, 0xae80, 0x3000000) [ 1131.683984] ? sysfs_create_mount_point+0xa0/0xa0 [ 1131.688826] ? do_raw_spin_trylock+0x270/0x270 [ 1131.693413] kobject_add_internal.cold+0x129/0x6d8 [ 1131.698351] ? kobj_ns_type_registered+0x60/0x60 [ 1131.703101] ? kfree_const+0x59/0x70 [ 1131.706820] ? rcu_read_lock_sched_held+0x110/0x130 [ 1131.711837] ? kfree+0x1fa/0x230 [ 1131.715209] ? kfree_const+0x5e/0x70 [ 1131.715240] kobject_init_and_add+0x101/0x160 [ 1131.715255] ? kobject_add_internal+0x4b0/0x4b0 [ 1131.719087] gfs2: fsid=_: can't read superblock [ 1131.723506] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 1131.723521] ? vsnprintf+0x368/0x1b10 [ 1131.723548] gfs2_sys_fs_add+0x210/0x500 [ 1131.723562] ? recover_store+0x1a0/0x1a0 [ 1131.723579] ? snprintf+0xbb/0xf0 [ 1131.723593] ? vsprintf+0x30/0x40 [ 1131.756313] gfs2: fsid=_: can't read superblock: -22 [ 1131.757249] ? set_blocksize+0x2bf/0x340 [ 1131.766402] ? memcpy+0x46/0x50 [ 1131.769695] fill_super+0x894/0x1990 [ 1131.773418] ? gfs2_online_uevent+0x2d0/0x2d0 [ 1131.777915] ? snprintf+0xbb/0xf0 [ 1131.781362] ? vsprintf+0x40/0x40 [ 1131.784819] ? ns_capable_common+0x141/0x170 [ 1131.789222] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 1131.794247] ? set_blocksize+0x2bf/0x340 [ 1131.798303] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 1131.803844] gfs2_mount+0x5db/0x6ee [ 1131.807482] ? fill_super+0x1990/0x1990 [ 1131.811495] ? vfs_parse_fs_string+0x1c5/0x2b0 [ 1131.816081] ? vfs_parse_fs_param+0x4b0/0x4b0 [ 1131.820582] ? fill_super+0x1990/0x1990 [ 1131.824556] legacy_get_tree+0xf2/0x200 [ 1131.828535] vfs_get_tree+0x123/0x450 [ 1131.832340] do_mount+0x1622/0x2fa0 [ 1131.835974] ? copy_mount_string+0x40/0x40 [ 1131.840205] ? kmem_cache_alloc_trace+0x354/0x760 [ 1131.845060] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 1131.850612] ? _copy_from_user+0xdd/0x150 [ 1131.854760] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 1131.860295] ? copy_mount_options+0x30e/0x440 [ 1131.864798] ksys_mount+0xdb/0x150 [ 1131.868345] __x64_sys_mount+0xbe/0x150 [ 1131.872331] do_syscall_64+0x1a3/0x800 [ 1131.876223] ? syscall_return_slowpath+0x5f0/0x5f0 [ 1131.881151] ? prepare_exit_to_usermode+0x232/0x3b0 [ 1131.886175] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 1131.891021] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 1131.896209] RIP: 0033:0x45a93a [ 1131.899451] Code: b8 a6 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 ed 8c fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 0f 83 ca 8c fb ff c3 66 0f 1f 84 00 00 00 00 00 [ 1131.918357] RSP: 002b:00007ff699fe9a88 EFLAGS: 00000206 ORIG_RAX: 00000000000000a5 [ 1131.926111] RAX: ffffffffffffffda RBX: 00007ff699fe9b30 RCX: 000000000045a93a [ 1131.933371] RDX: 00007ff699fe9ad0 RSI: 0000000020000200 RDI: 00007ff699fe9af0 [ 1131.940643] RBP: 0000000020000200 R08: 00007ff699fe9b30 R09: 00007ff699fe9ad0 [ 1131.947900] R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000003 [ 1131.955160] R13: 0000000000000000 R14: 00000000004db380 R15: 00000000ffffffff 03:47:51 executing program 1: r0 = openat$kvm(0xffffffffffffff9c, &(0x7f0000000140)='/dev/kvm\x00', 0x0, 0x0) r1 = ioctl$KVM_CREATE_VM(r0, 0xae01, 0x0) r2 = ioctl$KVM_CREATE_VCPU(r1, 0xae41, 0x0) ioctl$KVM_SET_USER_MEMORY_REGION(r1, 0x4020ae46, &(0x7f0000000400)={0x0, 0x3, 0x0, 0x2000, &(0x7f0000000000/0x2000)=nil}) syz_kvm_setup_cpu$x86(r1, 0xffffffffffffffff, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x0, 0x0, 0xfffffffffffffe78) sendmmsg$unix(0xffffffffffffffff, &(0x7f0000002780)=[{0x0, 0x0, &(0x7f0000001d00)=[{&(0x7f0000000bc0)="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", 0x3c5}], 0x1}], 0x1, 0x0) ioctl$KVM_REGISTER_COALESCED_MMIO(r1, 0x4010ae67, &(0x7f00000000c0)={0x0, 0x15200}) syz_kvm_setup_cpu$x86(0xffffffffffffffff, r2, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x8, 0x0, 0x0) ioctl$KVM_RUN(r2, 0xae80, 0x700) [ 1131.988496] kobject_add_internal failed for _ with -EEXIST, don't try to register things with the same name in the same directory. [ 1132.037598] gfs2: fsid=_: error -17 adding sysfs files [ 1132.075955] gfs2: not a GFS2 filesystem [ 1132.238418] gfs2: fsid=_: Trying to join cluster "lock_nolock", "_" [ 1132.267702] gfs2: fsid=_: Now mounting FS... [ 1132.278708] sysfs: cannot create duplicate filename '/fs/gfs2/_' [ 1132.293038] attempt to access beyond end of device [ 1132.314799] loop4: rw=4096, want=136, limit=17 [ 1132.338151] gfs2: error 10 reading superblock [ 1132.345933] CPU: 1 PID: 22358 Comm: syz-executor3 Not tainted 4.20.0-next-20190103 #4 [ 1132.353912] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 1132.363181] gfs2: fsid=_: can't read superblock [ 1132.363267] Call Trace: [ 1132.370517] dump_stack+0x1db/0x2d0 [ 1132.374161] ? dump_stack_print_info.cold+0x20/0x20 [ 1132.378449] gfs2: fsid=_: can't read superblock: -5 [ 1132.379185] ? _raw_spin_unlock_irqrestore+0xa4/0xe0 [ 1132.379209] sysfs_warn_dup.cold+0x1c/0x31 [ 1132.379225] sysfs_create_dir_ns+0x2ce/0x330 [ 1132.397951] ? sysfs_create_mount_point+0xa0/0xa0 [ 1132.402800] ? do_raw_spin_trylock+0x270/0x270 [ 1132.407423] kobject_add_internal.cold+0x129/0x6d8 [ 1132.412373] ? kobj_ns_type_registered+0x60/0x60 [ 1132.417135] ? kfree_const+0x59/0x70 [ 1132.420851] ? rcu_read_lock_sched_held+0x110/0x130 [ 1132.425873] ? kfree+0x1fa/0x230 [ 1132.429242] ? kfree_const+0x5e/0x70 [ 1132.432972] kobject_init_and_add+0x101/0x160 [ 1132.437476] ? kobject_add_internal+0x4b0/0x4b0 [ 1132.442155] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 1132.447699] ? vsnprintf+0x368/0x1b10 [ 1132.451527] gfs2_sys_fs_add+0x210/0x500 [ 1132.455595] ? recover_store+0x1a0/0x1a0 [ 1132.459679] ? snprintf+0xbb/0xf0 [ 1132.463141] ? vsprintf+0x30/0x40 [ 1132.466600] ? set_blocksize+0x2bf/0x340 [ 1132.470670] ? memcpy+0x46/0x50 [ 1132.473990] fill_super+0x894/0x1990 [ 1132.477737] ? gfs2_online_uevent+0x2d0/0x2d0 [ 1132.477762] ? snprintf+0xbb/0xf0 [ 1132.477776] ? vsprintf+0x40/0x40 [ 1132.477796] ? ns_capable_common+0x141/0x170 [ 1132.485737] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 1132.498595] ? set_blocksize+0x2bf/0x340 [ 1132.502674] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 1132.508231] gfs2_mount+0x5db/0x6ee [ 1132.511868] ? fill_super+0x1990/0x1990 [ 1132.511913] ? vfs_parse_fs_string+0x1c5/0x2b0 [ 1132.511929] ? vfs_parse_fs_param+0x4b0/0x4b0 [ 1132.524952] ? fill_super+0x1990/0x1990 [ 1132.529490] legacy_get_tree+0xf2/0x200 [ 1132.529515] vfs_get_tree+0x123/0x450 [ 1132.529548] do_mount+0x1622/0x2fa0 [ 1132.529573] ? copy_mount_string+0x40/0x40 [ 1132.545165] ? kmem_cache_alloc_trace+0x354/0x760 [ 1132.550014] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 1132.550029] ? _copy_from_user+0xdd/0x150 [ 1132.550046] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 1132.550073] ? copy_mount_options+0x30e/0x440 [ 1132.569801] ksys_mount+0xdb/0x150 [ 1132.573365] __x64_sys_mount+0xbe/0x150 [ 1132.577351] do_syscall_64+0x1a3/0x800 [ 1132.581262] ? syscall_return_slowpath+0x5f0/0x5f0 03:47:52 executing program 2: syz_mount_image$gfs2(&(0x7f0000000080)='gfs2\x00', &(0x7f00000000c0)='./file0\x00', 0x40000005, 0x0, 0x0, 0x421, 0x0) syz_mount_image$f2fs(&(0x7f0000000000)='f2fs\x00', &(0x7f0000000040)='./file0\x00', 0x1, 0x8, &(0x7f0000001580)=[{&(0x7f0000000100)="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", 0x1000, 0x10f2}, {&(0x7f0000001100)="f39c664bde122e985bf8b3d2a936667247e239ebdb5547128cc6beb1bd1c3ce71957be04ab33cd855fb34142806e6935c2f666a0ab5c0b94180be10fcffda7ed1e80b15d57cda2083615731458a7e5de3c191444a4e5afde4bf4e81db32da3fb4be1437166cf68d057718f4eb512897a4aa730e8a6a031a1d94aa9cfe56e1c146dccfdf3f3b8662cbeae4c41d0c94761772f6f598c7a7944ee49aba2b46a2c6c69bb0720164b91253a875bf855d41bb1fffa416858137a6303cead4a378d94c3", 0xc0, 0x3ff}, {&(0x7f00000011c0)="a30d9e69a7d3651d30f0c5f9a4ff17f4e207d1e8273e6ca89acb9d21b17a04a255245946abd4e39de4f75fc10272e23e119f334ca6009a5723a53ed9f100ab2ce3f5d6b6d478497c104bf14b3c46bca17a8e8b3c884feb9cb8c3ee24106084f263ee4f006e5cd34d105ccd5db8c853577dda5787149d9aec5773813b03a81f86829dc10f1781236e6b6b023ed82d78c4d2a4a25d9e0cca364906333db8c60f9bc9223403f2bff6640ea5e67b536829147c491610387b2ebf0473b18f44f8aaf9823bd2d900010dc7fc56f461174750d70915b15fa8a21efef6b55f7bbb3baeaa52acda9eae876b014b3c9c327b05e0afaa4f", 0xf2, 0x1}, {&(0x7f00000012c0)="5aeb5eb95d7ec2225c4cfe9c5e86f6876a18635ae0deb941aaf5c152fe6cc54771", 0x21, 0x38}, {&(0x7f0000001300), 0x0, 0x3}, {&(0x7f0000001340)="fcd90570679b316d02357e2889b1b830639cd2cb951335c93c1932959c2a498f3c716d0a4851e401ed2cc5fb8932052e1ac305791285", 0x36, 0x1000}, {&(0x7f0000001380)="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", 0xfa, 0x9}, {&(0x7f0000001480)="27bec21d6ef58df00a097d0651f6dc987018b688cf0af4f71d4ba30808a2d6041449ad9a1515f12172a3a8016905ae76103d962b7bf2ea31834dbbd054850ac602865b291102ff03e1d727aead0c715e59f1e809bcb6c4a97c4ead1328e8aaf06f09e29d3046b7ad46de23145a9597a7df21b6ba5f93539ca12251a45c8af87b9886ef7ce4500aed7a0c650fbd283e4678120c3a3451c5c87252c6370ee1f32b39f6d4c460d99b55093d2abf1bba82b49a45843a54b9043fcb42bb2878c8a9e9dc7418195ea8a2b7e22361", 0xcb, 0x81}], 0xa000, &(0x7f0000001640)={[{@noinline_xattr='noinline_xattr'}, {@disable_roll_forward='disable_roll_forward'}, {@norecovery='norecovery'}, {@noheap='noheap'}, {@fsync_mode_posix='fsync_mode=posix'}, {@jqfmt_vfsold='jqfmt=vfsold'}, {@background_gc_on='background_gc=on'}, {@test_dummy_encryption='test_dummy_encryption'}], [{@appraise='appraise'}, {@smackfsroot={'smackfsroot', 0x3d, 'cgroup'}}, {@smackfsdef={'smackfsdef', 0x3d, 'usersystem!keyring@}em0\\cgroup'}}, {@subj_role={'subj_role', 0x3d, 'gfs2\x00'}}, {@fsuuid={'fsuuid', 0x3d, {[0x3e, 0x31, 0x77, 0x33, 0x33, 0x66, 0x37, 0x3f], 0x2d, [0x7f, 0x0, 0x76], 0x2d, [0x77, 0x3b, 0x77, 0x77], 0x2d, [0x76, 0x63, 0x62, 0x31], 0x2d, [0x35, 0x63, 0x7d, 0x75, 0x37, 0x37, 0x66, 0x8115d598358eb777]}}}, {@dont_measure='dont_measure'}, {@obj_role={'obj_role', 0x3d, 'eth0loem0selinux&ppp1'}}, {@defcontext={'defcontext', 0x3d, 'system_u'}}, {@mask={'mask', 0x3d, 'MAY_EXEC'}}, {@permit_directio='permit_directio'}]}) socketpair$unix(0x1, 0x0, 0x0, 0x0) 03:47:52 executing program 5: r0 = socket$inet(0x2, 0x4000000000000001, 0x0) setsockopt$inet_tcp_int(r0, 0x6, 0x80000000000002, &(0x7f0000000040)=0x74, 0x4) bind$inet(r0, &(0x7f0000000180)={0x2, 0x4e23, @multicast1}, 0x10) sendto$inet(r0, 0x0, 0x0, 0x200007fd, &(0x7f0000e68000)={0x2, 0x4e23, @local}, 0x10) write$binfmt_elf64(r0, &(0x7f00000012c0)=ANY=[@ANYBLOB="7f454c4601000500000000000000000000000300000000008b0300000000000040000000000000001901000000000000cf0000000100380002000100c70a010151e57474090e00000300000000000000ff0f00000000000000000080000000000600000000000000db0a000000000000d616000000000000b27e2b7d90630ff79f047e22afbe739a615db84a0058ce3572d99ea10910ec6bf6ba57404bb35b88227009c25cfc6802a2b9a17a285b27f3e6a66f3f7d712cc9d3daf7e5b378f1f1aea47383c1b2213503c6bf3f6e73ca712d88eb1852562e8796913d6a3236e2532dcdade6597d5c20651c4520ce1ade1bd110422aba4e4364e2cf9589e661ad0ff96218d75fe22a793040b35188c96f2ca9fe626500000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000f52687e000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000901a50be12753000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"], 0x209) mmap(&(0x7f0000000000/0xb36000)=nil, 0xb36000, 0x3, 0x8031, 0xffffffffffffffff, 0x0) sendmmsg$inet_sctp(r0, &(0x7f0000002600)=[{0x0, 0x0, &(0x7f0000000240), 0x0, 0x0, 0x0, 0xf00}], 0x1, 0x0) [ 1132.586214] ? prepare_exit_to_usermode+0x232/0x3b0 [ 1132.586234] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 1132.586257] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 1132.586267] RIP: 0033:0x45a93a [ 1132.586282] Code: b8 a6 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 ed 8c fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 0f 83 ca 8c fb ff c3 66 0f 1f 84 00 00 00 00 00 [ 1132.586289] RSP: 002b:00007fdbfe5d2a88 EFLAGS: 00000206 ORIG_RAX: 00000000000000a5 [ 1132.586300] RAX: ffffffffffffffda RBX: 00007fdbfe5d2b30 RCX: 000000000045a93a [ 1132.586308] RDX: 00007fdbfe5d2ad0 RSI: 0000000020000200 RDI: 00007fdbfe5d2af0 [ 1132.586318] RBP: 0000000020000200 R08: 00007fdbfe5d2b30 R09: 00007fdbfe5d2ad0 [ 1132.596165] R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000003 [ 1132.596173] R13: 0000000000000000 R14: 00000000004db380 R15: 00000000ffffffff [ 1132.636786] kobject_add_internal failed for _ with -EEXIST, don't try to register things with the same name in the same directory. [ 1132.652787] gfs2: fsid=_: error -17 adding sysfs files 03:47:52 executing program 0: socketpair$unix(0x1, 0x1, 0x0, &(0x7f0000000440)={0xffffffffffffffff, 0xffffffffffffffff}) ioctl$PERF_EVENT_IOC_ENABLE(r0, 0x8912, 0x400200) r1 = openat$kvm(0xffffffffffffff9c, &(0x7f00000000c0)='/dev/kvm\x00', 0x0, 0x0) openat$dlm_monitor(0xffffffffffffff9c, &(0x7f0000000340)='/dev/dlm-monitor\x00', 0x0, 0x0) r2 = ioctl$KVM_CREATE_VM(r1, 0xae01, 0x0) r3 = ioctl$KVM_CREATE_VCPU(r2, 0xae41, 0x0) syz_kvm_setup_cpu$x86(r2, 0xffffffffffffffff, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x0, 0x0, 0x0) syz_kvm_setup_cpu$x86(0xffffffffffffffff, r3, &(0x7f0000000000/0x18000)=nil, &(0x7f00000001c0)=[@text64={0x40, &(0x7f0000000040)="b9800000c00f3235001000000f30f24c0f2c49e8426dc4027d3493b80800003626660f7e676d660f1678b06cc403f9dfbeb70000000bc7442400f5000000c744240284d178bcff1c24f2f347dbe1", 0x4e}], 0x1, 0x48, 0x0, 0x0) pipe2(&(0x7f0000000000), 0x0) ioctl$KVM_RUN(r3, 0xae80, 0xe8030000) 03:47:52 executing program 1: r0 = openat$kvm(0xffffffffffffff9c, &(0x7f0000000140)='/dev/kvm\x00', 0x0, 0x0) r1 = ioctl$KVM_CREATE_VM(r0, 0xae01, 0x0) r2 = ioctl$KVM_CREATE_VCPU(r1, 0xae41, 0x0) ioctl$KVM_SET_USER_MEMORY_REGION(r1, 0x4020ae46, &(0x7f0000000400)={0x0, 0x3, 0x0, 0x2000, &(0x7f0000000000/0x2000)=nil}) syz_kvm_setup_cpu$x86(r1, 0xffffffffffffffff, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x0, 0x0, 0xfffffffffffffe78) sendmmsg$unix(0xffffffffffffffff, &(0x7f0000002780)=[{0x0, 0x0, &(0x7f0000001d00)=[{&(0x7f0000000bc0)="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", 0x3c5}], 0x1}], 0x1, 0x0) ioctl$KVM_REGISTER_COALESCED_MMIO(r1, 0x4010ae67, &(0x7f00000000c0)={0x0, 0x15200}) syz_kvm_setup_cpu$x86(0xffffffffffffffff, r2, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x8, 0x0, 0x0) ioctl$KVM_RUN(r2, 0xae80, 0x500) 03:47:52 executing program 3: syz_mount_image$gfs2(&(0x7f0000000140)='gfs2\x00', &(0x7f0000000200)='./file0\x00', 0x0, 0x0, 0x0, 0x0, &(0x7f00000003c0)={[{@locktable={'locktable', 0x3d, '/'}}, {@lockproto_nolock='lockproto=lock_nolock'}]}) 03:47:52 executing program 4: syz_mount_image$gfs2(&(0x7f0000000140)='gfs2\x00', &(0x7f0000000200)='./file0\x00', 0x125e2, 0x0, 0x0, 0x0, &(0x7f00000003c0)={[{@locktable={'locktable', 0x3d, '/'}}, {@lockproto_nolock='lockproto=lock_nolock'}]}) socketpair$unix(0x1, 0x1, 0x0, &(0x7f0000000180)) 03:47:52 executing program 2: r0 = openat$kvm(0xffffffffffffff9c, &(0x7f0000000140)='/dev/kvm\x00', 0x0, 0x0) r1 = ioctl$KVM_CREATE_VM(r0, 0xae01, 0x0) ioctl$KVM_SET_SIGNAL_MASK(0xffffffffffffffff, 0x4004ae8b, &(0x7f0000001000)=ANY=[@ANYBLOB="fdc2"]) r2 = ioctl$KVM_CREATE_VCPU(r1, 0xae41, 0x0) syz_kvm_setup_cpu$x86(0xffffffffffffffff, r2, &(0x7f0000000000/0x18000)=nil, &(0x7f0000000100)=[@textreal={0x8, 0x0}], 0x1, 0x0, 0x0, 0x0) ioctl$KVM_NMI(r2, 0xae9a) ioctl$KVM_SET_USER_MEMORY_REGION(r1, 0x4020ae46, &(0x7f00000002c0)={0x0, 0x2, 0x0, 0x2000, &(0x7f0000001000/0x2000)=nil}) fcntl$F_SET_RW_HINT(0xffffffffffffffff, 0x40c, 0x0) perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0x7f, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, @perf_config_ext}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0) ioctl$KVM_RUN(r2, 0xae80, 0x0) getsockopt$inet_sctp6_SCTP_STREAM_SCHEDULER(0xffffffffffffffff, 0x84, 0x7b, &(0x7f0000000180), 0x0) getsockopt$inet_sctp6_SCTP_DEFAULT_SEND_PARAM(0xffffffffffffffff, 0x84, 0xa, 0x0, 0x0) syz_open_dev$sndpcmc(0x0, 0x0, 0x0) [ 1133.036515] gfs2: fsid=_: Trying to join cluster "lock_nolock", "_" [ 1133.073604] gfs2: fsid=_: Now mounting FS... [ 1133.099135] gfs2: not a GFS2 filesystem [ 1133.114295] gfs2: fsid=_: can't read superblock 03:47:52 executing program 1: r0 = openat$kvm(0xffffffffffffff9c, &(0x7f0000000140)='/dev/kvm\x00', 0x0, 0x0) r1 = ioctl$KVM_CREATE_VM(r0, 0xae01, 0x0) r2 = ioctl$KVM_CREATE_VCPU(r1, 0xae41, 0x0) ioctl$KVM_SET_USER_MEMORY_REGION(r1, 0x4020ae46, &(0x7f0000000400)={0x0, 0x3, 0x0, 0x2000, &(0x7f0000000000/0x2000)=nil}) syz_kvm_setup_cpu$x86(r1, 0xffffffffffffffff, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x0, 0x0, 0xfffffffffffffe78) sendmmsg$unix(0xffffffffffffffff, &(0x7f0000002780)=[{0x0, 0x0, &(0x7f0000001d00)=[{&(0x7f0000000bc0)="b474ac0450ac6a2ff5ba4c1a19990e818d6fb646a5739e09c636550fdd39d0316e215a5a9427ac426da0b375844fb7f5ee5130d0b57cdab9af6f5f0d39c1787ec9ecde6263664c6a9859b7a0c4cbc99a05184da950f370cf65a18bff7975c0c12ca4227baa2164d031a5472d7f581c6f7eedd103d8fc89b6b4b52e5d3da0817eec8c57f722e356068b99a056ab6a693b9eebe38d75170491e07f9f69573b02b1a048f29e39cd24fed99e8606ffcbe4f617f48370ec62bd327cdfb9da8e8fef232b2e8f8f6868bb1781eab4c294befd65d9a336123bd34be8f256b5fc0420aa6e930f292a9a06365daaebd0bcaaaf5e0c12167aad0c62a48666383ee58b37df8077c5d2d5298d5247e240a78ff2543147129775f6d4a872df80d9da66c2a0a169df65141cbe88b1e280d60f6e11b25a0b5bb1bdd430378761d547f3ff7e42cc84c849e66004e30905d908e352a53f95bca84a68a6ce5ee82b69c939a196a7060bee28d8dee1ed52ae04b228bedf9302df44cc957780e42c2784d18e3695ee5e73dbe385331494af3cbcf8952e85469e9566c32692c0ceae8dab7b9553b5e8aa66edbad2ed828ba2a665a48a2822d9dc538863aea705c926c5a12fee84db545a36a13281e09e82c06211cc195cb4409bedfb7cf22f6c01fba9720bc4f447da73bb95bab6c056ce51bbc9d5b6622c54152e853f9639d2db2a5992e0f0e8f77a2e5efcfd139869cbdc902622399035d6ab8c22e33605be6850356be97ac05588720e1e215fbf5cb6633f0894e0a4dbd28708cac77792a31b00f47d18cebcb9114f1b0ffd66b587c5f9ba086fc530c6a0ac561068de208f18a3b6adc47f04bd63bd4a31544eb953398ddee5b5e4533aa529947aa46e7e517ff719e559c106f8afc570019f272a9f2d2699c7384612854de44dc40bb33aafee4e5fab1c06ceeffec56782452589f80c3946e6631c591e7f82af7e3a6422e0f35b0847f0a3049ee29b09f8aadf59c96a99576be85d6ddcf8c4d82373355add27397517402a56fd36bf877a53731413c30786431262705fb01511a778482cd85b60323b683e0e9d2f06b57678ddcf06f6da03f818e7f0b4db7045527f6e00fa26fe586fe0fcc72024fad6bab1739f6d7980d21f1fac0e7f53ee4cb254349b93a89f5695be91e5c586411b18f3f11298d979abdf4dd4796b181e623189aa73182c4c5ff346545168a520241ce23e08ade26085f654537258efaacfe1a64b2261c5180eb7c01ca6f4dc0f08f98ec12c06036278eff4c8d3b852bb2022be745861268ffbe0bb37c45452d2ac97aa6cb81db9f428688e6eab0e85ba6eb2eaecf4e8e137a2101f04b201258a71d857194610", 0x3c5}], 0x1}], 0x1, 0x0) ioctl$KVM_REGISTER_COALESCED_MMIO(r1, 0x4010ae67, &(0x7f00000000c0)={0x0, 0x15200}) syz_kvm_setup_cpu$x86(0xffffffffffffffff, r2, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x8, 0x0, 0x0) ioctl$KVM_RUN(r2, 0xae80, 0x1c) [ 1133.141822] gfs2: fsid=_: can't read superblock: -22 [ 1133.160768] sysfs: cannot create duplicate filename '/fs/gfs2/_' 03:47:52 executing program 2: r0 = dup2(0xffffffffffffffff, 0xffffffffffffff9c) r1 = socket$inet(0x2, 0x1, 0x0) r2 = socket$nl_generic(0x10, 0x3, 0x10) r3 = dup(r1) preadv(r0, &(0x7f0000000080)=[{&(0x7f00000005c0)=""/238, 0xee}, {&(0x7f00000006c0)=""/195, 0xc3}, {&(0x7f00000007c0)=""/4096, 0x1000}, {&(0x7f00000017c0)=""/244, 0xf4}, {&(0x7f00000018c0)=""/240, 0xf0}], 0x5, 0x0) bpf$BPF_GET_MAP_INFO(0xf, &(0x7f0000000440)={r0, 0xffffffffffffff00, &(0x7f0000000400)}, 0x6) ioctl$RTC_EPOCH_SET(r3, 0x4008700e, 0x9) r4 = perf_event_open(&(0x7f0000000540)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0x7f, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, @perf_bp={0x0}}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0) setsockopt$inet_tcp_int(r1, 0x6, 0x22, &(0x7f0000000040)=0x8, 0x4) socketpair(0x0, 0x4, 0x2, &(0x7f0000000140)) mprotect(&(0x7f0000ffb000/0x3000)=nil, 0x3000, 0x3) r5 = accept4$inet(r3, &(0x7f00000003c0)={0x2, 0x0, @dev}, &(0x7f00000004c0)=0xfe04, 0x800) ioctl$FIBMAP(r5, 0x1, &(0x7f0000000200)=0x379) io_cancel(0x0, &(0x7f0000000180)={0x0, 0x0, 0x0, 0x0, 0x6, r2, &(0x7f0000000240)}, 0x0) openat$loop_ctrl(0xffffffffffffff9c, &(0x7f0000000380)='/dev/loop-control\x00', 0x0, 0x0) clone(0x0, &(0x7f0000000240)="f0543ea004b5630695000000000000000000", 0x0, 0x0, 0x0) ioctl$PERF_EVENT_IOC_QUERY_BPF(0xffffffffffffffff, 0xc008240a, &(0x7f00000005c0)=ANY=[]) socketpair$unix(0x1, 0x3, 0x0, &(0x7f0000000340)) perf_event_open(&(0x7f00000002c0)={0x0, 0x70, 0x4, 0x9, 0x3, 0x0, 0x0, 0xfffffffffffff8b0, 0x4, 0x5, 0xfff, 0x3, 0x3, 0x303d, 0x7, 0x2, 0x0, 0xffffffff, 0x1, 0xffff, 0x1, 0x477, 0x80000000, 0x7, 0xfffffffffffffff7, 0x80000000, 0x5a87, 0x7, 0x3, 0x8, 0x7, 0x80000001, 0x2, 0xd, 0x5, 0xee69, 0xb5, 0x5, 0x0, 0x47, 0x0, @perf_bp={&(0x7f00000001c0), 0x3}, 0x80, 0x1, 0x4, 0xf, 0x5, 0xffff, 0x3}, 0x0, 0x1, 0xffffffffffffffff, 0x3) fchdir(0xffffffffffffffff) r6 = fcntl$dupfd(0xffffffffffffffff, 0x0, 0xffffffffffffffff) ioctl$PERF_EVENT_IOC_ENABLE(r4, 0x8912, 0x0) bind$inet(r1, &(0x7f0000000000)={0x2, 0x4e23, @local}, 0x10) sendto$inet(r1, 0x0, 0x0, 0x200007fd, &(0x7f0000000280)={0x2, 0x4e23}, 0x10) ioctl$DRM_IOCTL_GET_CAP(r6, 0xc010640c, &(0x7f00000019c0)={0x7, 0x6}) prctl$PR_GET_FPEMU(0x9, &(0x7f0000000480)) r7 = syz_open_procfs(0x0, &(0x7f0000000100)='net/tcp\x00') sendfile(r1, r7, &(0x7f0000000500), 0x80000003) 03:47:52 executing program 0: socketpair$unix(0x1, 0x1, 0x0, &(0x7f0000000440)={0xffffffffffffffff, 0xffffffffffffffff}) ioctl$PERF_EVENT_IOC_ENABLE(r0, 0x8912, 0x400200) r1 = openat$kvm(0xffffffffffffff9c, &(0x7f00000000c0)='/dev/kvm\x00', 0x0, 0x0) openat$dlm_monitor(0xffffffffffffff9c, &(0x7f0000000340)='/dev/dlm-monitor\x00', 0x0, 0x0) r2 = ioctl$KVM_CREATE_VM(r1, 0xae01, 0x0) r3 = ioctl$KVM_CREATE_VCPU(r2, 0xae41, 0x0) syz_kvm_setup_cpu$x86(r2, 0xffffffffffffffff, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x0, 0x0, 0x0) syz_kvm_setup_cpu$x86(0xffffffffffffffff, r3, &(0x7f0000000000/0x18000)=nil, &(0x7f00000001c0)=[@text64={0x40, &(0x7f0000000040)="b9800000c00f3235001000000f30f24c0f2c49e8426dc4027d3493b80800003626660f7e676d660f1678b06cc403f9dfbeb70000000bc7442400f5000000c744240284d178bcff1c24f2f347dbe1", 0x4e}], 0x1, 0x48, 0x0, 0x0) pipe2(&(0x7f0000000000), 0x0) ioctl$KVM_RUN(r3, 0xae80, 0xffffffffa0010000) [ 1133.300493] CPU: 0 PID: 22426 Comm: syz-executor4 Not tainted 4.20.0-next-20190103 #4 [ 1133.308526] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 1133.317879] Call Trace: [ 1133.320471] dump_stack+0x1db/0x2d0 [ 1133.324144] ? dump_stack_print_info.cold+0x20/0x20 [ 1133.329174] ? _raw_spin_unlock_irqrestore+0xa4/0xe0 [ 1133.334304] sysfs_warn_dup.cold+0x1c/0x31 [ 1133.338551] sysfs_create_dir_ns+0x2ce/0x330 [ 1133.342967] ? sysfs_create_mount_point+0xa0/0xa0 [ 1133.347809] ? do_raw_spin_trylock+0x270/0x270 [ 1133.347838] kobject_add_internal.cold+0x129/0x6d8 [ 1133.347858] ? kobj_ns_type_registered+0x60/0x60 [ 1133.362095] ? kfree_const+0x59/0x70 [ 1133.362110] ? rcu_read_lock_sched_held+0x110/0x130 [ 1133.362129] ? kfree+0x1fa/0x230 [ 1133.374201] ? kfree_const+0x5e/0x70 [ 1133.377927] kobject_init_and_add+0x101/0x160 [ 1133.382427] ? kobject_add_internal+0x4b0/0x4b0 [ 1133.387120] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 1133.387135] ? vsnprintf+0x368/0x1b10 [ 1133.387160] gfs2_sys_fs_add+0x210/0x500 [ 1133.400524] ? recover_store+0x1a0/0x1a0 [ 1133.404620] ? snprintf+0xbb/0xf0 [ 1133.404634] ? vsprintf+0x30/0x40 [ 1133.404650] ? set_blocksize+0x2bf/0x340 [ 1133.411559] ? memcpy+0x46/0x50 [ 1133.411579] fill_super+0x894/0x1990 [ 1133.411604] ? gfs2_online_uevent+0x2d0/0x2d0 [ 1133.419172] ? snprintf+0xbb/0xf0 [ 1133.427350] ? vsprintf+0x40/0x40 [ 1133.427372] ? ns_capable_common+0x141/0x170 [ 1133.427386] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 1133.427401] ? set_blocksize+0x2bf/0x340 [ 1133.447736] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 1133.453285] gfs2_mount+0x5db/0x6ee [ 1133.456933] ? fill_super+0x1990/0x1990 [ 1133.460949] ? vfs_parse_fs_string+0x1c5/0x2b0 [ 1133.465572] ? vfs_parse_fs_param+0x4b0/0x4b0 [ 1133.470079] ? fill_super+0x1990/0x1990 [ 1133.470095] legacy_get_tree+0xf2/0x200 [ 1133.470117] vfs_get_tree+0x123/0x450 [ 1133.481852] do_mount+0x1622/0x2fa0 [ 1133.485502] ? copy_mount_string+0x40/0x40 [ 1133.489781] ? kmem_cache_alloc_trace+0x354/0x760 [ 1133.489823] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 03:47:53 executing program 1: r0 = openat$kvm(0xffffffffffffff9c, &(0x7f0000000140)='/dev/kvm\x00', 0x0, 0x0) r1 = ioctl$KVM_CREATE_VM(r0, 0xae01, 0x0) r2 = ioctl$KVM_CREATE_VCPU(r1, 0xae41, 0x0) ioctl$KVM_SET_USER_MEMORY_REGION(r1, 0x4020ae46, &(0x7f0000000400)={0x0, 0x3, 0x0, 0x2000, &(0x7f0000000000/0x2000)=nil}) syz_kvm_setup_cpu$x86(r1, 0xffffffffffffffff, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x0, 0x0, 0xfffffffffffffe78) sendmmsg$unix(0xffffffffffffffff, &(0x7f0000002780)=[{0x0, 0x0, &(0x7f0000001d00)=[{&(0x7f0000000bc0)="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", 0x3c5}], 0x1}], 0x1, 0x0) ioctl$KVM_REGISTER_COALESCED_MMIO(r1, 0x4010ae67, &(0x7f00000000c0)={0x0, 0x15200}) syz_kvm_setup_cpu$x86(0xffffffffffffffff, r2, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x8, 0x0, 0x0) ioctl$KVM_RUN(r2, 0xae80, 0x60) [ 1133.500195] ? copy_mount_options+0x30e/0x440 [ 1133.504735] ksys_mount+0xdb/0x150 [ 1133.508283] __x64_sys_mount+0xbe/0x150 [ 1133.512275] do_syscall_64+0x1a3/0x800 [ 1133.516175] ? syscall_return_slowpath+0x5f0/0x5f0 [ 1133.516194] ? prepare_exit_to_usermode+0x232/0x3b0 [ 1133.516215] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 1133.531002] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 1133.536199] RIP: 0033:0x45a93a [ 1133.539393] Code: b8 a6 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 ed 8c fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 0f 83 ca 8c fb ff c3 66 0f 1f 84 00 00 00 00 00 [ 1133.558289] RSP: 002b:00007ff699fe9a88 EFLAGS: 00000206 ORIG_RAX: 00000000000000a5 [ 1133.558304] RAX: ffffffffffffffda RBX: 00007ff699fe9b30 RCX: 000000000045a93a [ 1133.558313] RDX: 00007ff699fe9ad0 RSI: 0000000020000200 RDI: 00007ff699fe9af0 [ 1133.558329] RBP: 0000000020000200 R08: 00007ff699fe9b30 R09: 00007ff699fe9ad0 [ 1133.573283] R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000003 [ 1133.573292] R13: 0000000000000000 R14: 00000000004db380 R15: 00000000ffffffff [ 1133.643103] gfs2: fsid=_: Trying to join cluster "lock_nolock", "_" [ 1133.676624] gfs2: fsid=_: Now mounting FS... [ 1133.710586] gfs2: not a GFS2 filesystem [ 1133.720269] gfs2: fsid=_: can't read superblock [ 1133.723133] kobject_add_internal failed for _ with -EEXIST, don't try to register things with the same name in the same directory. [ 1133.752370] gfs2: fsid=_: can't read superblock: -22 [ 1133.792896] gfs2: fsid=_: error -17 adding sysfs files 03:47:53 executing program 0: socketpair$unix(0x1, 0x1, 0x0, &(0x7f0000000440)={0xffffffffffffffff, 0xffffffffffffffff}) ioctl$PERF_EVENT_IOC_ENABLE(r0, 0x8912, 0x400200) r1 = openat$kvm(0xffffffffffffff9c, &(0x7f00000000c0)='/dev/kvm\x00', 0x0, 0x0) openat$dlm_monitor(0xffffffffffffff9c, &(0x7f0000000340)='/dev/dlm-monitor\x00', 0x0, 0x0) r2 = ioctl$KVM_CREATE_VM(r1, 0xae01, 0x0) r3 = ioctl$KVM_CREATE_VCPU(r2, 0xae41, 0x0) syz_kvm_setup_cpu$x86(r2, 0xffffffffffffffff, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x0, 0x0, 0x0) syz_kvm_setup_cpu$x86(0xffffffffffffffff, r3, &(0x7f0000000000/0x18000)=nil, &(0x7f00000001c0)=[@text64={0x40, &(0x7f0000000040)="b9800000c00f3235001000000f30f24c0f2c49e8426dc4027d3493b80800003626660f7e676d660f1678b06cc403f9dfbeb70000000bc7442400f5000000c744240284d178bcff1c24f2f347dbe1", 0x4e}], 0x1, 0x48, 0x0, 0x0) pipe2(&(0x7f0000000000), 0x0) ioctl$KVM_RUN(r3, 0xae80, 0x2) 03:47:53 executing program 2: r0 = dup2(0xffffffffffffffff, 0xffffffffffffff9c) r1 = socket$inet(0x2, 0x1, 0x0) r2 = socket$nl_generic(0x10, 0x3, 0x10) r3 = dup(r1) preadv(r0, &(0x7f0000000080)=[{&(0x7f00000005c0)=""/238, 0xee}, {&(0x7f00000006c0)=""/195, 0xc3}, {&(0x7f00000007c0)=""/4096, 0x1000}, {&(0x7f00000017c0)=""/244, 0xf4}, {&(0x7f00000018c0)=""/240, 0xf0}], 0x5, 0x0) bpf$BPF_GET_MAP_INFO(0xf, &(0x7f0000000440)={r0, 0xffffffffffffff00, &(0x7f0000000400)}, 0x6) ioctl$RTC_EPOCH_SET(r3, 0x4008700e, 0x9) r4 = perf_event_open(&(0x7f0000000540)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0x7f, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, @perf_bp={0x0}}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0) setsockopt$inet_tcp_int(r1, 0x6, 0x22, &(0x7f0000000040)=0x8, 0x4) socketpair(0x0, 0x4, 0x2, &(0x7f0000000140)) mprotect(&(0x7f0000ffb000/0x3000)=nil, 0x3000, 0x3) r5 = accept4$inet(r3, &(0x7f00000003c0)={0x2, 0x0, @dev}, &(0x7f00000004c0)=0xfe04, 0x800) ioctl$FIBMAP(r5, 0x1, &(0x7f0000000200)=0x379) io_cancel(0x0, &(0x7f0000000180)={0x0, 0x0, 0x0, 0x0, 0x6, r2, &(0x7f0000000240)}, 0x0) openat$loop_ctrl(0xffffffffffffff9c, &(0x7f0000000380)='/dev/loop-control\x00', 0x0, 0x0) clone(0x0, &(0x7f0000000240)="f0543ea004b5630695000000000000000000", 0x0, 0x0, 0x0) ioctl$PERF_EVENT_IOC_QUERY_BPF(0xffffffffffffffff, 0xc008240a, &(0x7f00000005c0)=ANY=[]) socketpair$unix(0x1, 0x3, 0x0, &(0x7f0000000340)) perf_event_open(&(0x7f00000002c0)={0x0, 0x70, 0x4, 0x9, 0x3, 0x0, 0x0, 0xfffffffffffff8b0, 0x4, 0x5, 0xfff, 0x3, 0x3, 0x303d, 0x7, 0x2, 0x0, 0xffffffff, 0x1, 0xffff, 0x1, 0x477, 0x80000000, 0x7, 0xfffffffffffffff7, 0x80000000, 0x5a87, 0x7, 0x3, 0x8, 0x7, 0x80000001, 0x2, 0xd, 0x5, 0xee69, 0xb5, 0x5, 0x0, 0x47, 0x0, @perf_bp={&(0x7f00000001c0), 0x3}, 0x80, 0x1, 0x4, 0xf, 0x5, 0xffff, 0x3}, 0x0, 0x1, 0xffffffffffffffff, 0x3) fchdir(0xffffffffffffffff) r6 = fcntl$dupfd(0xffffffffffffffff, 0x0, 0xffffffffffffffff) ioctl$PERF_EVENT_IOC_ENABLE(r4, 0x8912, 0x0) bind$inet(r1, &(0x7f0000000000)={0x2, 0x4e23, @local}, 0x10) sendto$inet(r1, 0x0, 0x0, 0x200007fd, &(0x7f0000000280)={0x2, 0x4e23}, 0x10) ioctl$DRM_IOCTL_GET_CAP(r6, 0xc010640c, &(0x7f00000019c0)={0x7, 0x6}) prctl$PR_GET_FPEMU(0x9, &(0x7f0000000480)) r7 = syz_open_procfs(0x0, &(0x7f0000000100)='net/tcp\x00') sendfile(r1, r7, &(0x7f0000000500), 0x80000003) 03:47:53 executing program 5: r0 = socket$inet(0x2, 0x4000000000000001, 0x0) setsockopt$inet_tcp_int(r0, 0x6, 0x80000000000002, &(0x7f0000000040)=0x74, 0x4) bind$inet(r0, &(0x7f0000000180)={0x2, 0x4e23, @multicast1}, 0x10) sendto$inet(r0, 0x0, 0x0, 0x200007fd, &(0x7f0000e68000)={0x2, 0x4e23, @local}, 0x10) write$binfmt_elf64(r0, &(0x7f00000012c0)=ANY=[@ANYBLOB="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"], 0x209) mmap(&(0x7f0000000000/0xb36000)=nil, 0xb36000, 0x3, 0x8031, 0xffffffffffffffff, 0x0) sendmmsg$inet_sctp(r0, &(0x7f0000002600)=[{0x0, 0x0, &(0x7f0000000240)=[{0x0}], 0x1, 0x0, 0x0, 0xf00}], 0x1, 0x0) 03:47:53 executing program 1: r0 = openat$kvm(0xffffffffffffff9c, &(0x7f0000000140)='/dev/kvm\x00', 0x0, 0x0) r1 = ioctl$KVM_CREATE_VM(r0, 0xae01, 0x0) r2 = ioctl$KVM_CREATE_VCPU(r1, 0xae41, 0x0) ioctl$KVM_SET_USER_MEMORY_REGION(r1, 0x4020ae46, &(0x7f0000000400)={0x0, 0x3, 0x0, 0x2000, &(0x7f0000000000/0x2000)=nil}) syz_kvm_setup_cpu$x86(r1, 0xffffffffffffffff, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x0, 0x0, 0xfffffffffffffe78) sendmmsg$unix(0xffffffffffffffff, &(0x7f0000002780)=[{0x0, 0x0, &(0x7f0000001d00)=[{&(0x7f0000000bc0)="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", 0x3c5}], 0x1}], 0x1, 0x0) ioctl$KVM_REGISTER_COALESCED_MMIO(r1, 0x4010ae67, &(0x7f00000000c0)={0x0, 0x15200}) syz_kvm_setup_cpu$x86(0xffffffffffffffff, r2, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x8, 0x0, 0x0) ioctl$KVM_RUN(r2, 0xae80, 0x3f000000) [ 1134.025547] gfs2: fsid=_: Trying to join cluster "lock_nolock", "_" [ 1134.031979] gfs2: fsid=_: Now mounting FS... [ 1134.059741] gfs2: not a GFS2 filesystem 03:47:53 executing program 3: syz_mount_image$gfs2(&(0x7f0000000140)='gfs2\x00', &(0x7f0000000200)='./file0\x00', 0x0, 0x0, 0x0, 0x0, &(0x7f00000003c0)={[{@locktable={'locktable', 0x3d, '/'}}, {@lockproto_nolock='lockproto=lock_nolock'}]}) [ 1134.101955] gfs2: fsid=_: can't read superblock [ 1134.154296] gfs2: fsid=_: can't read superblock: -22 [ 1134.195104] sysfs: cannot create duplicate filename '/fs/gfs2/_' [ 1134.201274] CPU: 1 PID: 22487 Comm: syz-executor3 Not tainted 4.20.0-next-20190103 #4 [ 1134.209243] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 1134.218594] Call Trace: [ 1134.221200] dump_stack+0x1db/0x2d0 [ 1134.224840] ? dump_stack_print_info.cold+0x20/0x20 [ 1134.229861] ? _raw_spin_unlock_irqrestore+0xa4/0xe0 [ 1134.234968] sysfs_warn_dup.cold+0x1c/0x31 [ 1134.239201] sysfs_create_dir_ns+0x2ce/0x330 [ 1134.243612] ? sysfs_create_mount_point+0xa0/0xa0 [ 1134.248465] ? do_raw_spin_trylock+0x270/0x270 [ 1134.253066] kobject_add_internal.cold+0x129/0x6d8 [ 1134.258012] ? kobj_ns_type_registered+0x60/0x60 [ 1134.262765] ? kfree_const+0x59/0x70 [ 1134.266486] ? rcu_read_lock_sched_held+0x110/0x130 [ 1134.271499] ? kfree+0x1fa/0x230 [ 1134.274865] ? kfree_const+0x5e/0x70 [ 1134.278586] kobject_init_and_add+0x101/0x160 [ 1134.283086] ? kobject_add_internal+0x4b0/0x4b0 [ 1134.287755] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 1134.293284] ? vsnprintf+0x368/0x1b10 [ 1134.297099] gfs2_sys_fs_add+0x210/0x500 [ 1134.301157] ? recover_store+0x1a0/0x1a0 [ 1134.305218] ? snprintf+0xbb/0xf0 [ 1134.308680] ? vsprintf+0x30/0x40 [ 1134.312131] ? set_blocksize+0x2bf/0x340 [ 1134.316195] ? memcpy+0x46/0x50 [ 1134.319508] fill_super+0x894/0x1990 [ 1134.323242] ? gfs2_online_uevent+0x2d0/0x2d0 [ 1134.327736] ? snprintf+0xbb/0xf0 [ 1134.331188] ? vsprintf+0x40/0x40 [ 1134.334664] ? ns_capable_common+0x141/0x170 [ 1134.339073] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 1134.344115] ? set_blocksize+0x2bf/0x340 [ 1134.348186] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 1134.353724] gfs2_mount+0x5db/0x6ee [ 1134.357368] ? fill_super+0x1990/0x1990 [ 1134.361369] ? vfs_parse_fs_string+0x1c5/0x2b0 [ 1134.365950] ? vfs_parse_fs_param+0x4b0/0x4b0 [ 1134.370442] ? fill_super+0x1990/0x1990 [ 1134.374410] legacy_get_tree+0xf2/0x200 [ 1134.378380] vfs_get_tree+0x123/0x450 [ 1134.382176] do_mount+0x1622/0x2fa0 [ 1134.385807] ? copy_mount_string+0x40/0x40 [ 1134.390043] ? kmem_cache_alloc_trace+0x354/0x760 [ 1134.394929] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 1134.400662] ? _copy_from_user+0xdd/0x150 [ 1134.404813] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 1134.410364] ? copy_mount_options+0x30e/0x440 [ 1134.414868] ksys_mount+0xdb/0x150 [ 1134.418416] __x64_sys_mount+0xbe/0x150 [ 1134.422397] do_syscall_64+0x1a3/0x800 [ 1134.426303] ? syscall_return_slowpath+0x5f0/0x5f0 [ 1134.431235] ? prepare_exit_to_usermode+0x232/0x3b0 [ 1134.436257] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 1134.441111] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 1134.446297] RIP: 0033:0x45a93a [ 1134.449486] Code: b8 a6 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 ed 8c fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 0f 83 ca 8c fb ff c3 66 0f 1f 84 00 00 00 00 00 [ 1134.468384] RSP: 002b:00007fdbfe5d2a88 EFLAGS: 00000206 ORIG_RAX: 00000000000000a5 [ 1134.476087] RAX: ffffffffffffffda RBX: 00007fdbfe5d2b30 RCX: 000000000045a93a [ 1134.483348] RDX: 00007fdbfe5d2ad0 RSI: 0000000020000200 RDI: 00007fdbfe5d2af0 03:47:54 executing program 0: socketpair$unix(0x1, 0x1, 0x0, &(0x7f0000000440)={0xffffffffffffffff, 0xffffffffffffffff}) ioctl$PERF_EVENT_IOC_ENABLE(r0, 0x8912, 0x400200) r1 = openat$kvm(0xffffffffffffff9c, &(0x7f00000000c0)='/dev/kvm\x00', 0x0, 0x0) openat$dlm_monitor(0xffffffffffffff9c, &(0x7f0000000340)='/dev/dlm-monitor\x00', 0x0, 0x0) r2 = ioctl$KVM_CREATE_VM(r1, 0xae01, 0x0) r3 = ioctl$KVM_CREATE_VCPU(r2, 0xae41, 0x0) syz_kvm_setup_cpu$x86(r2, 0xffffffffffffffff, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x0, 0x0, 0x0) syz_kvm_setup_cpu$x86(0xffffffffffffffff, r3, &(0x7f0000000000/0x18000)=nil, &(0x7f00000001c0)=[@text64={0x40, &(0x7f0000000040)="b9800000c00f3235001000000f30f24c0f2c49e8426dc4027d3493b80800003626660f7e676d660f1678b06cc403f9dfbeb70000000bc7442400f5000000c744240284d178bcff1c24f2f347dbe1", 0x4e}], 0x1, 0x48, 0x0, 0x0) pipe2(&(0x7f0000000000), 0x0) ioctl$KVM_RUN(r3, 0xae80, 0xffff8000) [ 1134.490612] RBP: 0000000020000200 R08: 00007fdbfe5d2b30 R09: 00007fdbfe5d2ad0 [ 1134.497870] R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000003 [ 1134.505137] R13: 0000000000000000 R14: 00000000004db380 R15: 00000000ffffffff [ 1134.514192] kobject_add_internal failed for _ with -EEXIST, don't try to register things with the same name in the same directory. [ 1134.528998] gfs2: fsid=_: error -17 adding sysfs files 03:47:54 executing program 1: r0 = openat$kvm(0xffffffffffffff9c, &(0x7f0000000140)='/dev/kvm\x00', 0x0, 0x0) r1 = ioctl$KVM_CREATE_VM(r0, 0xae01, 0x0) r2 = ioctl$KVM_CREATE_VCPU(r1, 0xae41, 0x0) ioctl$KVM_SET_USER_MEMORY_REGION(r1, 0x4020ae46, &(0x7f0000000400)={0x0, 0x3, 0x0, 0x2000, &(0x7f0000000000/0x2000)=nil}) syz_kvm_setup_cpu$x86(r1, 0xffffffffffffffff, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x0, 0x0, 0xfffffffffffffe78) sendmmsg$unix(0xffffffffffffffff, &(0x7f0000002780)=[{0x0, 0x0, &(0x7f0000001d00)=[{&(0x7f0000000bc0)="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", 0x3c5}], 0x1}], 0x1, 0x0) ioctl$KVM_REGISTER_COALESCED_MMIO(r1, 0x4010ae67, &(0x7f00000000c0)={0x0, 0x15200}) syz_kvm_setup_cpu$x86(0xffffffffffffffff, r2, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x8, 0x0, 0x0) ioctl$KVM_RUN(r2, 0xae80, 0x10000000) 03:47:54 executing program 4: syz_mount_image$gfs2(&(0x7f0000000140)='gfs2\x00', &(0x7f0000000200)='./file0\x00', 0x74, 0x0, 0x0, 0x0, &(0x7f00000003c0)={[{@locktable={'locktable', 0x3d, '/'}}, {@lockproto_nolock='lockproto=lock_nolock'}]}) socketpair$unix(0x1, 0x1, 0x0, &(0x7f0000000180)) [ 1134.685198] gfs2: fsid=_: Trying to join cluster "lock_nolock", "_" [ 1134.691640] gfs2: fsid=_: Now mounting FS... 03:47:54 executing program 2: perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0x7f, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, @perf_bp={0x0}}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0) r0 = socket$inet_tcp(0x2, 0x1, 0x0) setsockopt$inet_tcp_int(r0, 0x6, 0x10000000013, &(0x7f0000000000)=0x1, 0x4) connect$inet(r0, &(0x7f0000000100)={0x2, 0x0, @local}, 0x10) setsockopt$inet_tcp_int(r0, 0x6, 0x14, &(0x7f0000788ffc)=0x100000002, 0x4) sendmsg$nl_route(r0, &(0x7f0000000180)={0x0, 0x0, &(0x7f0000000140)={&(0x7f00000001c0)=ANY=[@ANYBLOB], 0x1}}, 0x0) recvmmsg(r0, &(0x7f0000000d40), 0x26d, 0x2, 0x0) [ 1134.757371] gfs2: not a GFS2 filesystem [ 1134.761499] gfs2: fsid=_: can't read superblock [ 1134.776581] gfs2: fsid=_: can't read superblock: -22 [ 1134.845138] sysfs: cannot create duplicate filename '/fs/gfs2/_' [ 1134.878341] CPU: 1 PID: 22506 Comm: syz-executor4 Not tainted 4.20.0-next-20190103 #4 [ 1134.886320] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 1134.895672] Call Trace: [ 1134.895697] dump_stack+0x1db/0x2d0 [ 1134.895720] ? dump_stack_print_info.cold+0x20/0x20 [ 1134.895743] ? _raw_spin_unlock_irqrestore+0xa4/0xe0 [ 1134.895772] sysfs_warn_dup.cold+0x1c/0x31 [ 1134.895792] sysfs_create_dir_ns+0x2ce/0x330 [ 1134.895813] ? sysfs_create_mount_point+0xa0/0xa0 [ 1134.925574] ? do_raw_spin_trylock+0x270/0x270 [ 1134.930173] kobject_add_internal.cold+0x129/0x6d8 [ 1134.930196] ? kobj_ns_type_registered+0x60/0x60 [ 1134.930212] ? kfree_const+0x59/0x70 [ 1134.943561] ? rcu_read_lock_sched_held+0x110/0x130 [ 1134.948599] ? kfree+0x1fa/0x230 [ 1134.951962] ? kfree_const+0x5e/0x70 [ 1134.951983] kobject_init_and_add+0x101/0x160 [ 1134.951998] ? kobject_add_internal+0x4b0/0x4b0 [ 1134.952015] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 1134.970375] ? vsnprintf+0x368/0x1b10 [ 1134.974201] gfs2_sys_fs_add+0x210/0x500 [ 1134.978271] ? recover_store+0x1a0/0x1a0 [ 1134.982341] ? snprintf+0xbb/0xf0 [ 1134.985802] ? vsprintf+0x30/0x40 [ 1134.989268] ? set_blocksize+0x2bf/0x340 [ 1134.989285] ? memcpy+0x46/0x50 [ 1134.996649] fill_super+0x894/0x1990 [ 1135.000381] ? gfs2_online_uevent+0x2d0/0x2d0 [ 1135.004881] ? snprintf+0xbb/0xf0 [ 1135.004895] ? vsprintf+0x40/0x40 [ 1135.004915] ? ns_capable_common+0x141/0x170 [ 1135.004929] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 1135.004941] ? set_blocksize+0x2bf/0x340 [ 1135.004958] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 1135.004974] gfs2_mount+0x5db/0x6ee [ 1135.021245] ? fill_super+0x1990/0x1990 [ 1135.021309] ? vfs_parse_fs_string+0x1c5/0x2b0 [ 1135.021343] ? vfs_parse_fs_param+0x4b0/0x4b0 [ 1135.043093] ? fill_super+0x1990/0x1990 [ 1135.043108] legacy_get_tree+0xf2/0x200 [ 1135.043128] vfs_get_tree+0x123/0x450 [ 1135.043146] do_mount+0x1622/0x2fa0 [ 1135.043162] ? calibrate_delay.cold+0x47b/0x539 [ 1135.043182] ? copy_mount_string+0x40/0x40 [ 1135.043197] ? retint_kernel+0x2d/0x2d [ 1135.051646] ? copy_mount_options+0x234/0x440 [ 1135.051674] ? copy_mount_options+0x23a/0x440 [ 1135.051686] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 1135.051701] ? copy_mount_options+0x30e/0x440 [ 1135.063094] ksys_mount+0xdb/0x150 [ 1135.063115] __x64_sys_mount+0xbe/0x150 [ 1135.063135] do_syscall_64+0x1a3/0x800 [ 1135.063153] ? syscall_return_slowpath+0x5f0/0x5f0 [ 1135.063169] ? prepare_exit_to_usermode+0x232/0x3b0 [ 1135.063191] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 1135.063225] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 1135.063241] RIP: 0033:0x45a93a 03:47:54 executing program 0: socketpair$unix(0x1, 0x1, 0x0, &(0x7f0000000440)={0xffffffffffffffff, 0xffffffffffffffff}) ioctl$PERF_EVENT_IOC_ENABLE(r0, 0x8912, 0x400200) r1 = openat$kvm(0xffffffffffffff9c, &(0x7f00000000c0)='/dev/kvm\x00', 0x0, 0x0) openat$dlm_monitor(0xffffffffffffff9c, &(0x7f0000000340)='/dev/dlm-monitor\x00', 0x0, 0x0) r2 = ioctl$KVM_CREATE_VM(r1, 0xae01, 0x0) r3 = ioctl$KVM_CREATE_VCPU(r2, 0xae41, 0x0) syz_kvm_setup_cpu$x86(r2, 0xffffffffffffffff, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x0, 0x0, 0x0) syz_kvm_setup_cpu$x86(0xffffffffffffffff, r3, &(0x7f0000000000/0x18000)=nil, &(0x7f00000001c0)=[@text64={0x40, &(0x7f0000000040)="b9800000c00f3235001000000f30f24c0f2c49e8426dc4027d3493b80800003626660f7e676d660f1678b06cc403f9dfbeb70000000bc7442400f5000000c744240284d178bcff1c24f2f347dbe1", 0x4e}], 0x1, 0x48, 0x0, 0x0) pipe2(&(0x7f0000000000), 0x0) ioctl$KVM_RUN(r3, 0xae80, 0xffffffffa0008000) [ 1135.072133] Code: b8 a6 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 ed 8c fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 0f 83 ca 8c fb ff c3 66 0f 1f 84 00 00 00 00 00 [ 1135.148337] RSP: 002b:00007ff699fe9a88 EFLAGS: 00000206 ORIG_RAX: 00000000000000a5 [ 1135.156069] RAX: ffffffffffffffda RBX: 00007ff699fe9b30 RCX: 000000000045a93a [ 1135.163342] RDX: 00007ff699fe9ad0 RSI: 0000000020000200 RDI: 00007ff699fe9af0 [ 1135.170607] RBP: 0000000020000200 R08: 00007ff699fe9b30 R09: 00007ff699fe9ad0 [ 1135.177881] R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000003 [ 1135.185160] R13: 0000000000000000 R14: 00000000004db380 R15: 00000000ffffffff 03:47:54 executing program 3: syz_mount_image$gfs2(&(0x7f0000000140)='gfs2\x10', &(0x7f0000000200)='./file0\x00', 0x0, 0x0, 0x0, 0x0, &(0x7f00000003c0)={[{@locktable={'locktable', 0x3d, '/'}}, {@lockproto_nolock='lockproto=lock_nolock'}]}) 03:47:55 executing program 1: r0 = openat$kvm(0xffffffffffffff9c, &(0x7f0000000140)='/dev/kvm\x00', 0x0, 0x0) r1 = ioctl$KVM_CREATE_VM(r0, 0xae01, 0x0) r2 = ioctl$KVM_CREATE_VCPU(r1, 0xae41, 0x0) ioctl$KVM_SET_USER_MEMORY_REGION(r1, 0x4020ae46, &(0x7f0000000400)={0x0, 0x3, 0x0, 0x2000, &(0x7f0000000000/0x2000)=nil}) syz_kvm_setup_cpu$x86(r1, 0xffffffffffffffff, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x0, 0x0, 0xfffffffffffffe78) sendmmsg$unix(0xffffffffffffffff, &(0x7f0000002780)=[{0x0, 0x0, &(0x7f0000001d00)=[{&(0x7f0000000bc0)="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", 0x3c5}], 0x1}], 0x1, 0x0) ioctl$KVM_REGISTER_COALESCED_MMIO(r1, 0x4010ae67, &(0x7f00000000c0)={0x0, 0x15200}) syz_kvm_setup_cpu$x86(0xffffffffffffffff, r2, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x8, 0x0, 0x0) ioctl$KVM_RUN(r2, 0xae80, 0x770400) [ 1135.293701] kobject_add_internal failed for _ with -EEXIST, don't try to register things with the same name in the same directory. 03:47:55 executing program 2: perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0x7f, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, @perf_bp={0x0}}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0) r0 = socket$inet_tcp(0x2, 0x1, 0x0) setsockopt$inet_tcp_int(r0, 0x6, 0x10000000013, &(0x7f0000000000)=0x1, 0x4) connect$inet(r0, &(0x7f0000000100)={0x2, 0x0, @local}, 0x10) setsockopt$inet_tcp_int(r0, 0x6, 0x14, &(0x7f0000788ffc)=0x100000002, 0x4) sendmsg$nl_route(r0, &(0x7f0000000180)={0x0, 0x0, &(0x7f0000000140)={&(0x7f00000001c0)=ANY=[@ANYBLOB], 0x1}}, 0x0) recvmmsg(r0, &(0x7f0000000d40), 0x26d, 0x2, 0x0) 03:47:55 executing program 0: socketpair$unix(0x1, 0x1, 0x0, &(0x7f0000000440)={0xffffffffffffffff, 0xffffffffffffffff}) ioctl$PERF_EVENT_IOC_ENABLE(r0, 0x8912, 0x400200) r1 = openat$kvm(0xffffffffffffff9c, &(0x7f00000000c0)='/dev/kvm\x00', 0x0, 0x0) openat$dlm_monitor(0xffffffffffffff9c, &(0x7f0000000340)='/dev/dlm-monitor\x00', 0x0, 0x0) r2 = ioctl$KVM_CREATE_VM(r1, 0xae01, 0x0) r3 = ioctl$KVM_CREATE_VCPU(r2, 0xae41, 0x0) syz_kvm_setup_cpu$x86(r2, 0xffffffffffffffff, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x0, 0x0, 0x0) syz_kvm_setup_cpu$x86(0xffffffffffffffff, r3, &(0x7f0000000000/0x18000)=nil, &(0x7f00000001c0)=[@text64={0x40, &(0x7f0000000040)="b9800000c00f3235001000000f30f24c0f2c49e8426dc4027d3493b80800003626660f7e676d660f1678b06cc403f9dfbeb70000000bc7442400f5000000c744240284d178bcff1c24f2f347dbe1", 0x4e}], 0x1, 0x48, 0x0, 0x0) pipe2(&(0x7f0000000000), 0x0) ioctl$KVM_RUN(r3, 0xae80, 0x18000000) [ 1135.637918] gfs2: fsid=_: error -17 adding sysfs files 03:47:55 executing program 5: r0 = socket$inet(0x2, 0x4000000000000001, 0x0) setsockopt$inet_tcp_int(r0, 0x6, 0x80000000000002, &(0x7f0000000040)=0x74, 0x4) bind$inet(r0, &(0x7f0000000180)={0x2, 0x4e23, @multicast1}, 0x10) sendto$inet(r0, 0x0, 0x0, 0x200007fd, &(0x7f0000e68000)={0x2, 0x4e23, @local}, 0x10) write$binfmt_elf64(r0, &(0x7f00000012c0)=ANY=[@ANYBLOB="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"], 0x209) mmap(&(0x7f0000000000/0xb36000)=nil, 0xb36000, 0x3, 0x8031, 0xffffffffffffffff, 0x0) sendmmsg$inet_sctp(r0, &(0x7f0000002600)=[{0x0, 0x0, &(0x7f0000000240)=[{0x0}], 0x1, 0x0, 0x0, 0xf00}], 0x1, 0x0) 03:47:55 executing program 3: syz_mount_image$gfs2(&(0x7f0000000140)='gfs2\x00', &(0x7f0000000200)='./file0\x00', 0x22000000, 0x0, 0x0, 0x0, &(0x7f00000003c0)={[{@locktable={'locktable', 0x3d, '/'}}, {@lockproto_nolock='lockproto=lock_nolock'}]}) 03:47:55 executing program 1: r0 = openat$kvm(0xffffffffffffff9c, &(0x7f0000000140)='/dev/kvm\x00', 0x0, 0x0) r1 = ioctl$KVM_CREATE_VM(r0, 0xae01, 0x0) r2 = ioctl$KVM_CREATE_VCPU(r1, 0xae41, 0x0) ioctl$KVM_SET_USER_MEMORY_REGION(r1, 0x4020ae46, &(0x7f0000000400)={0x0, 0x3, 0x0, 0x2000, &(0x7f0000000000/0x2000)=nil}) syz_kvm_setup_cpu$x86(r1, 0xffffffffffffffff, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x0, 0x0, 0xfffffffffffffe78) sendmmsg$unix(0xffffffffffffffff, &(0x7f0000002780)=[{0x0, 0x0, &(0x7f0000001d00)=[{&(0x7f0000000bc0)="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", 0x3c5}], 0x1}], 0x1, 0x0) ioctl$KVM_REGISTER_COALESCED_MMIO(r1, 0x4010ae67, &(0x7f00000000c0)={0x0, 0x15200}) syz_kvm_setup_cpu$x86(0xffffffffffffffff, r2, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x8, 0x0, 0x0) ioctl$KVM_RUN(r2, 0xae80, 0x7000000) 03:47:55 executing program 2: r0 = syz_open_pts(0xffffffffffffffff, 0x0) fcntl$lock(r0, 0x400000009, &(0x7f0000000080)={0x0, 0x0, 0x0, 0x101000000}) flock(r0, 0x2) mknod(&(0x7f0000000200)='./file0\x00', 0x8007, 0x16ea) r1 = open(&(0x7f0000000080)='./file0\x00', 0x0, 0x0) mmap(&(0x7f0000000000/0x3000)=nil, 0x3000, 0x2, 0x10, r1, 0x0) flock(r0, 0x2) flock(r0, 0x2) msgrcv(0x0, &(0x7f0000000240)=ANY=[@ANYBLOB="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"], 0x1, 0x0, 0x0) [ 1135.801629] gfs2: fsid=_: Trying to join cluster "lock_nolock", "_" [ 1135.837270] gfs2: fsid=_: Now mounting FS... [ 1135.878119] sysfs: cannot create duplicate filename '/fs/gfs2/_' [ 1135.888426] gfs2: not a GFS2 filesystem [ 1135.909933] gfs2: fsid=_: can't read superblock [ 1135.930336] CPU: 0 PID: 22556 Comm: syz-executor3 Not tainted 4.20.0-next-20190103 #4 [ 1135.938333] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 1135.947735] Call Trace: [ 1135.947761] dump_stack+0x1db/0x2d0 [ 1135.947783] ? dump_stack_print_info.cold+0x20/0x20 [ 1135.947805] ? _raw_spin_unlock_irqrestore+0xa4/0xe0 [ 1135.954012] sysfs_warn_dup.cold+0x1c/0x31 [ 1135.968381] sysfs_create_dir_ns+0x2ce/0x330 [ 1135.972812] ? sysfs_create_mount_point+0xa0/0xa0 [ 1135.977660] ? do_raw_spin_trylock+0x270/0x270 [ 1135.982302] kobject_add_internal.cold+0x129/0x6d8 [ 1135.987249] ? kobj_ns_type_registered+0x60/0x60 [ 1135.992028] ? kfree_const+0x59/0x70 [ 1135.995753] ? rcu_read_lock_sched_held+0x110/0x130 [ 1136.000769] ? kfree+0x1fa/0x230 [ 1136.004136] ? kfree_const+0x5e/0x70 [ 1136.007857] kobject_init_and_add+0x101/0x160 [ 1136.012357] ? kobject_add_internal+0x4b0/0x4b0 [ 1136.017030] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 1136.022582] ? vsnprintf+0x368/0x1b10 [ 1136.026427] gfs2_sys_fs_add+0x210/0x500 [ 1136.030485] ? recover_store+0x1a0/0x1a0 [ 1136.034569] ? snprintf+0xbb/0xf0 [ 1136.038032] ? vsprintf+0x30/0x40 [ 1136.041496] ? set_blocksize+0x2bf/0x340 [ 1136.045561] ? memcpy+0x46/0x50 [ 1136.048845] fill_super+0x894/0x1990 [ 1136.052584] ? gfs2_online_uevent+0x2d0/0x2d0 [ 1136.057094] ? snprintf+0xbb/0xf0 [ 1136.060549] ? vsprintf+0x40/0x40 [ 1136.064006] ? ns_capable_common+0x141/0x170 [ 1136.068460] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 1136.073482] ? set_blocksize+0x2bf/0x340 [ 1136.077540] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 1136.083091] gfs2_mount+0x5db/0x6ee [ 1136.086718] ? fill_super+0x1990/0x1990 [ 1136.090715] ? vfs_parse_fs_string+0x1c5/0x2b0 [ 1136.095297] ? vfs_parse_fs_param+0x4b0/0x4b0 [ 1136.099791] ? fill_super+0x1990/0x1990 [ 1136.103764] legacy_get_tree+0xf2/0x200 [ 1136.107744] vfs_get_tree+0x123/0x450 [ 1136.111560] do_mount+0x1622/0x2fa0 [ 1136.115218] ? copy_mount_string+0x40/0x40 [ 1136.119471] ? kmem_cache_alloc_trace+0x354/0x760 [ 1136.124325] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 1136.129874] ? _copy_from_user+0xdd/0x150 [ 1136.134028] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 1136.139575] ? copy_mount_options+0x30e/0x440 [ 1136.144096] ksys_mount+0xdb/0x150 [ 1136.147642] __x64_sys_mount+0xbe/0x150 [ 1136.151638] do_syscall_64+0x1a3/0x800 [ 1136.155536] ? syscall_return_slowpath+0x5f0/0x5f0 [ 1136.160469] ? prepare_exit_to_usermode+0x232/0x3b0 [ 1136.165507] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 1136.170364] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 1136.175550] RIP: 0033:0x45a93a [ 1136.178742] Code: b8 a6 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 ed 8c fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 0f 83 ca 8c fb ff c3 66 0f 1f 84 00 00 00 00 00 [ 1136.197641] RSP: 002b:00007fdbfe5d2a88 EFLAGS: 00000206 ORIG_RAX: 00000000000000a5 [ 1136.205350] RAX: ffffffffffffffda RBX: 00007fdbfe5d2b30 RCX: 000000000045a93a [ 1136.212615] RDX: 00007fdbfe5d2ad0 RSI: 0000000020000200 RDI: 00007fdbfe5d2af0 [ 1136.219893] RBP: 0000000020000200 R08: 00007fdbfe5d2b30 R09: 00007fdbfe5d2ad0 03:47:55 executing program 0: socketpair$unix(0x1, 0x1, 0x0, &(0x7f0000000440)={0xffffffffffffffff, 0xffffffffffffffff}) ioctl$PERF_EVENT_IOC_ENABLE(r0, 0x8912, 0x400200) r1 = openat$kvm(0xffffffffffffff9c, &(0x7f00000000c0)='/dev/kvm\x00', 0x0, 0x0) openat$dlm_monitor(0xffffffffffffff9c, &(0x7f0000000340)='/dev/dlm-monitor\x00', 0x0, 0x0) r2 = ioctl$KVM_CREATE_VM(r1, 0xae01, 0x0) r3 = ioctl$KVM_CREATE_VCPU(r2, 0xae41, 0x0) syz_kvm_setup_cpu$x86(r2, 0xffffffffffffffff, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x0, 0x0, 0x0) syz_kvm_setup_cpu$x86(0xffffffffffffffff, r3, &(0x7f0000000000/0x18000)=nil, &(0x7f00000001c0)=[@text64={0x40, &(0x7f0000000040)="b9800000c00f3235001000000f30f24c0f2c49e8426dc4027d3493b80800003626660f7e676d660f1678b06cc403f9dfbeb70000000bc7442400f5000000c744240284d178bcff1c24f2f347dbe1", 0x4e}], 0x1, 0x48, 0x0, 0x0) pipe2(&(0x7f0000000000), 0x0) ioctl$KVM_RUN(r3, 0xae80, 0x4000) [ 1136.227154] R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000003 [ 1136.234443] R13: 0000000000000000 R14: 00000000004db380 R15: 00000000ffffffff [ 1136.253100] gfs2: fsid=_: can't read superblock: -22 [ 1136.268237] kobject_add_internal failed for _ with -EEXIST, don't try to register things with the same name in the same directory. [ 1136.297982] gfs2: fsid=_: error -17 adding sysfs files 03:47:56 executing program 4: syz_mount_image$gfs2(&(0x7f0000000140)='gfs2\x00', &(0x7f0000000200)='./file0\x00', 0xffffff97, 0x0, 0x0, 0x0, &(0x7f00000003c0)={[{@locktable={'locktable', 0x3d, '/'}}, {@lockproto_nolock='lockproto=lock_nolock'}]}) socketpair$unix(0x1, 0x1, 0x0, &(0x7f0000000180)) 03:47:56 executing program 1: r0 = openat$kvm(0xffffffffffffff9c, &(0x7f0000000140)='/dev/kvm\x00', 0x0, 0x0) r1 = ioctl$KVM_CREATE_VM(r0, 0xae01, 0x0) r2 = ioctl$KVM_CREATE_VCPU(r1, 0xae41, 0x0) ioctl$KVM_SET_USER_MEMORY_REGION(r1, 0x4020ae46, &(0x7f0000000400)={0x0, 0x3, 0x0, 0x2000, &(0x7f0000000000/0x2000)=nil}) syz_kvm_setup_cpu$x86(r1, 0xffffffffffffffff, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x0, 0x0, 0xfffffffffffffe78) sendmmsg$unix(0xffffffffffffffff, &(0x7f0000002780)=[{0x0, 0x0, &(0x7f0000001d00)=[{&(0x7f0000000bc0)="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", 0x3c5}], 0x1}], 0x1, 0x0) ioctl$KVM_REGISTER_COALESCED_MMIO(r1, 0x4010ae67, &(0x7f00000000c0)={0x0, 0x15200}) syz_kvm_setup_cpu$x86(0xffffffffffffffff, r2, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x8, 0x0, 0x0) ioctl$KVM_RUN(r2, 0xae80, 0x1b00) 03:47:56 executing program 0: socketpair$unix(0x1, 0x1, 0x0, &(0x7f0000000440)={0xffffffffffffffff, 0xffffffffffffffff}) ioctl$PERF_EVENT_IOC_ENABLE(r0, 0x8912, 0x400200) r1 = openat$kvm(0xffffffffffffff9c, &(0x7f00000000c0)='/dev/kvm\x00', 0x0, 0x0) openat$dlm_monitor(0xffffffffffffff9c, &(0x7f0000000340)='/dev/dlm-monitor\x00', 0x0, 0x0) r2 = ioctl$KVM_CREATE_VM(r1, 0xae01, 0x0) r3 = ioctl$KVM_CREATE_VCPU(r2, 0xae41, 0x0) syz_kvm_setup_cpu$x86(r2, 0xffffffffffffffff, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x0, 0x0, 0x0) syz_kvm_setup_cpu$x86(0xffffffffffffffff, r3, &(0x7f0000000000/0x18000)=nil, &(0x7f00000001c0)=[@text64={0x40, &(0x7f0000000040)="b9800000c00f3235001000000f30f24c0f2c49e8426dc4027d3493b80800003626660f7e676d660f1678b06cc403f9dfbeb70000000bc7442400f5000000c744240284d178bcff1c24f2f347dbe1", 0x4e}], 0x1, 0x48, 0x0, 0x0) pipe2(&(0x7f0000000000), 0x0) ioctl$KVM_RUN(r3, 0xae80, 0x18) 03:47:56 executing program 3: syz_mount_image$gfs2(&(0x7f0000000140)='gfs2\x00', &(0x7f0000000200)='./file0\x00', 0x3800, 0x0, 0x0, 0x0, &(0x7f00000003c0)={[{@locktable={'locktable', 0x3d, '/'}}, {@lockproto_nolock='lockproto=lock_nolock'}]}) [ 1136.665935] gfs2: fsid=_: Trying to join cluster "lock_nolock", "_" [ 1136.702279] gfs2: fsid=_: Now mounting FS... 03:47:56 executing program 5: r0 = socket$inet(0x2, 0x4000000000000001, 0x0) setsockopt$inet_tcp_int(r0, 0x6, 0x80000000000002, &(0x7f0000000040)=0x74, 0x4) bind$inet(r0, &(0x7f0000000180)={0x2, 0x4e23, @multicast1}, 0x10) sendto$inet(r0, 0x0, 0x0, 0x200007fd, &(0x7f0000e68000)={0x2, 0x4e23, @local}, 0x10) write$binfmt_elf64(r0, &(0x7f00000012c0)=ANY=[@ANYBLOB="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"], 0x209) mmap(&(0x7f0000000000/0xb36000)=nil, 0xb36000, 0x3, 0x8031, 0xffffffffffffffff, 0x0) sendmmsg$inet_sctp(r0, &(0x7f0000002600)=[{0x0, 0x0, &(0x7f0000000240)=[{0x0}], 0x1, 0x0, 0x0, 0xf00}], 0x1, 0x0) [ 1136.716467] gfs2: not a GFS2 filesystem [ 1136.721030] sysfs: cannot create duplicate filename '/fs/gfs2/_' [ 1136.722861] gfs2: fsid=_: can't read superblock [ 1136.742847] gfs2: fsid=_: can't read superblock: -22 [ 1136.770664] CPU: 0 PID: 22586 Comm: syz-executor3 Not tainted 4.20.0-next-20190103 #4 [ 1136.778666] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 1136.788036] Call Trace: [ 1136.790671] dump_stack+0x1db/0x2d0 [ 1136.794321] ? dump_stack_print_info.cold+0x20/0x20 [ 1136.799353] ? _raw_spin_unlock_irqrestore+0xbd/0xe0 [ 1136.804504] sysfs_warn_dup.cold+0x1c/0x31 [ 1136.808758] sysfs_create_dir_ns+0x2ce/0x330 [ 1136.813207] ? sysfs_create_mount_point+0xa0/0xa0 [ 1136.813225] ? do_raw_spin_trylock+0x270/0x270 [ 1136.813255] kobject_add_internal.cold+0x129/0x6d8 [ 1136.813276] ? kobj_ns_type_registered+0x60/0x60 [ 1136.813305] ? kfree_const+0x59/0x70 [ 1136.822725] ? rcu_read_lock_sched_held+0x110/0x130 [ 1136.822741] ? kfree+0x1fa/0x230 [ 1136.822760] ? kfree_const+0x5e/0x70 [ 1136.822780] kobject_init_and_add+0x101/0x160 [ 1136.822796] ? kobject_add_internal+0x4b0/0x4b0 [ 1136.822816] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 1136.822830] ? vsnprintf+0x368/0x1b10 [ 1136.822855] gfs2_sys_fs_add+0x210/0x500 03:47:56 executing program 4: syz_mount_image$gfs2(&(0x7f0000000140)='gfs2\x00', &(0x7f0000000200)='./file0\x00', 0x3000000, 0x0, 0x0, 0x0, &(0x7f00000003c0)={[{@locktable={'locktable', 0x3d, '/'}}, {@lockproto_nolock='lockproto=lock_nolock'}]}) socketpair$unix(0x1, 0x1, 0x0, &(0x7f0000000180)) [ 1136.832511] ? recover_store+0x1a0/0x1a0 [ 1136.832531] ? snprintf+0xbb/0xf0 [ 1136.832545] ? vsprintf+0x30/0x40 [ 1136.832562] ? set_blocksize+0x2bf/0x340 [ 1136.832580] ? memcpy+0x46/0x50 [ 1136.841300] fill_super+0x894/0x1990 [ 1136.841335] ? gfs2_online_uevent+0x2d0/0x2d0 [ 1136.841357] ? snprintf+0xbb/0xf0 [ 1136.848457] ? vsprintf+0x40/0x40 [ 1136.848479] ? ns_capable_common+0x141/0x170 [ 1136.848493] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 1136.848506] ? set_blocksize+0x2bf/0x340 [ 1136.848522] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 1136.857705] gfs2_mount+0x5db/0x6ee [ 1136.857725] ? fill_super+0x1990/0x1990 [ 1136.857785] ? vfs_parse_fs_string+0x1c5/0x2b0 [ 1136.867110] ? vfs_parse_fs_param+0x4b0/0x4b0 [ 1136.867129] ? fill_super+0x1990/0x1990 [ 1136.867145] legacy_get_tree+0xf2/0x200 [ 1136.867167] vfs_get_tree+0x123/0x450 [ 1136.867186] do_mount+0x1622/0x2fa0 [ 1136.955495] ? copy_mount_string+0x40/0x40 [ 1136.959750] ? kmem_cache_alloc_trace+0x354/0x760 [ 1136.964606] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 03:47:56 executing program 4: syz_mount_image$gfs2(&(0x7f0000000140)='gfs2\x00', &(0x7f0000000200)='./file0\x00', 0xef250100, 0x0, 0x0, 0x0, &(0x7f00000003c0)={[{@locktable={'locktable', 0x3d, '/'}}, {@lockproto_nolock='lockproto=lock_nolock'}]}) socketpair$unix(0x1, 0x1, 0x0, &(0x7f0000000180)) [ 1136.970155] ? copy_mount_options+0x30e/0x440 [ 1136.974662] ksys_mount+0xdb/0x150 [ 1136.974683] __x64_sys_mount+0xbe/0x150 [ 1136.974703] do_syscall_64+0x1a3/0x800 [ 1136.986115] ? syscall_return_slowpath+0x5f0/0x5f0 [ 1136.991063] ? prepare_exit_to_usermode+0x232/0x3b0 [ 1136.996108] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 1137.000969] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 1137.006162] RIP: 0033:0x45a93a [ 1137.009360] Code: b8 a6 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 ed 8c fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 0f 83 ca 8c fb ff c3 66 0f 1f 84 00 00 00 00 00 [ 1137.028269] RSP: 002b:00007fdbfe5d2a88 EFLAGS: 00000206 ORIG_RAX: 00000000000000a5 [ 1137.035985] RAX: ffffffffffffffda RBX: 00007fdbfe5d2b30 RCX: 000000000045a93a [ 1137.043267] RDX: 00007fdbfe5d2ad0 RSI: 0000000020000200 RDI: 00007fdbfe5d2af0 [ 1137.043277] RBP: 0000000020000200 R08: 00007fdbfe5d2b30 R09: 00007fdbfe5d2ad0 [ 1137.043286] R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000003 03:47:56 executing program 1: r0 = openat$kvm(0xffffffffffffff9c, &(0x7f0000000140)='/dev/kvm\x00', 0x0, 0x0) r1 = ioctl$KVM_CREATE_VM(r0, 0xae01, 0x0) r2 = ioctl$KVM_CREATE_VCPU(r1, 0xae41, 0x0) ioctl$KVM_SET_USER_MEMORY_REGION(r1, 0x4020ae46, &(0x7f0000000400)={0x0, 0x3, 0x0, 0x2000, &(0x7f0000000000/0x2000)=nil}) syz_kvm_setup_cpu$x86(r1, 0xffffffffffffffff, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x0, 0x0, 0xfffffffffffffe78) sendmmsg$unix(0xffffffffffffffff, &(0x7f0000002780)=[{0x0, 0x0, &(0x7f0000001d00)=[{&(0x7f0000000bc0)="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", 0x3c5}], 0x1}], 0x1, 0x0) ioctl$KVM_REGISTER_COALESCED_MMIO(r1, 0x4010ae67, &(0x7f00000000c0)={0x0, 0x15200}) syz_kvm_setup_cpu$x86(0xffffffffffffffff, r2, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x8, 0x0, 0x0) ioctl$KVM_RUN(r2, 0xae80, 0xa00) [ 1137.043295] R13: 0000000000000000 R14: 00000000004db380 R15: 00000000ffffffff [ 1137.096242] kobject_add_internal failed for _ with -EEXIST, don't try to register things with the same name in the same directory. 03:47:56 executing program 2: r0 = openat$kvm(0xffffffffffffff9c, &(0x7f0000000140)='/dev/kvm\x00', 0x0, 0x0) r1 = ioctl$KVM_CREATE_VM(r0, 0xae01, 0x0) ioctl$KVM_SET_SIGNAL_MASK(0xffffffffffffffff, 0x4004ae8b, &(0x7f0000001000)=ANY=[@ANYBLOB="cf"]) r2 = ioctl$KVM_CREATE_VCPU(r1, 0xae41, 0x0) sendmsg$TEAM_CMD_OPTIONS_SET(0xffffffffffffffff, &(0x7f0000000fc0)={0x0, 0x0, &(0x7f0000000f80)={&(0x7f0000002040)={0x14}, 0x14}}, 0x0) syz_kvm_setup_cpu$x86(0xffffffffffffffff, r2, &(0x7f0000fe7000/0x18000)=nil, &(0x7f0000000440)=[@textreal={0x8, 0x0}], 0x1, 0x0, 0x0, 0x0) ioctl$KVM_NMI(r2, 0xae9a) ioctl$KVM_SET_USER_MEMORY_REGION(r1, 0x4020ae46, &(0x7f00000002c0)={0x0, 0x2, 0x0, 0x2000, &(0x7f0000001000/0x2000)=nil}) perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0x7f, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x3, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, @perf_config_ext}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0) ioctl$KVM_RUN(r2, 0xae80, 0x0) perf_event_open(0x0, 0x0, 0x0, 0xffffffffffffffff, 0x0) r3 = syz_open_dev$vbi(&(0x7f0000000100)='/dev/vbi#\x00', 0xffffffffffffffff, 0x2) ioctl$IOC_PR_REGISTER(r3, 0x401870c8, &(0x7f0000000040)={0x0, 0x80000001}) pipe(&(0x7f00000000c0)) write$RDMA_USER_CM_CMD_CREATE_ID(0xffffffffffffffff, 0x0, 0x0) [ 1137.162214] gfs2: fsid=_: error -17 adding sysfs files [ 1137.181289] gfs2: fsid=_: Trying to join cluster "lock_nolock", "_" [ 1137.192842] gfs2: fsid=_: Now mounting FS... [ 1137.223759] gfs2: not a GFS2 filesystem [ 1137.253866] gfs2: fsid=_: can't read superblock [ 1137.260391] sysfs: cannot create duplicate filename '/fs/gfs2/_' [ 1137.294202] gfs2: fsid=_: can't read superblock: -22 03:47:57 executing program 0: socketpair$unix(0x1, 0x1, 0x0, &(0x7f0000000440)={0xffffffffffffffff, 0xffffffffffffffff}) ioctl$PERF_EVENT_IOC_ENABLE(r0, 0x8912, 0x400200) r1 = openat$kvm(0xffffffffffffff9c, &(0x7f00000000c0)='/dev/kvm\x00', 0x0, 0x0) r2 = syz_open_dev$adsp(&(0x7f0000000100)='/dev/adsp#\x00', 0x2b, 0x2000) write$RDMA_USER_CM_CMD_CREATE_ID(0xffffffffffffff9c, &(0x7f0000000180)={0x0, 0x18, 0xfa00, {0x1, &(0x7f0000000140)={0xffffffffffffffff}, 0x117, 0x100f}}, 0x20) write$RDMA_USER_CM_CMD_BIND(r2, &(0x7f0000000200)={0x14, 0x88, 0xfa00, {r3, 0x1c, 0x0, @in6={0xa, 0x4e22, 0x4, @local, 0x20}}}, 0x90) openat$dlm_monitor(0xffffffffffffff9c, &(0x7f0000000340)='/dev/dlm-monitor\x00', 0x0, 0x0) r4 = ioctl$KVM_CREATE_VM(r1, 0xae01, 0x0) r5 = ioctl$KVM_CREATE_VCPU(r4, 0xae41, 0x0) syz_kvm_setup_cpu$x86(r4, 0xffffffffffffffff, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x0, 0x0, 0x0) syz_kvm_setup_cpu$x86(0xffffffffffffffff, r5, &(0x7f0000000000/0x18000)=nil, &(0x7f00000001c0)=[@text64={0x40, &(0x7f0000000040)="b9800000c00f3235001000000f30f24c0f2c49e8426dc4027d3493b80800003626660f7e676d660f1678b06cc403f9dfbeb70000000bc7442400f5000000c744240284d178bcff1c24f2f347dbe1", 0x4e}], 0x1, 0x48, 0x0, 0x0) pipe2(&(0x7f0000000000), 0x0) ioctl$KVM_RUN(r5, 0xae80, 0x0) [ 1137.341913] CPU: 0 PID: 22586 Comm: syz-executor3 Not tainted 4.20.0-next-20190103 #4 [ 1137.349933] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 1137.359293] Call Trace: [ 1137.361906] dump_stack+0x1db/0x2d0 [ 1137.365558] ? dump_stack_print_info.cold+0x20/0x20 [ 1137.370643] ? _raw_spin_unlock_irqrestore+0xa4/0xe0 [ 1137.375793] sysfs_warn_dup.cold+0x1c/0x31 [ 1137.380048] sysfs_create_dir_ns+0x2ce/0x330 [ 1137.384485] ? sysfs_create_mount_point+0xa0/0xa0 [ 1137.389343] ? do_raw_spin_trylock+0x270/0x270 [ 1137.393955] kobject_add_internal.cold+0x129/0x6d8 [ 1137.398906] ? kobj_ns_type_registered+0x60/0x60 [ 1137.403673] ? kfree_const+0x59/0x70 [ 1137.407393] ? rcu_read_lock_sched_held+0x110/0x130 [ 1137.412462] ? kfree+0x1fa/0x230 [ 1137.415853] ? kfree_const+0x5e/0x70 [ 1137.419790] kobject_init_and_add+0x101/0x160 [ 1137.424304] ? kobject_add_internal+0x4b0/0x4b0 [ 1137.429005] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 1137.434547] ? vsnprintf+0x368/0x1b10 [ 1137.438476] gfs2_sys_fs_add+0x210/0x500 [ 1137.442567] ? recover_store+0x1a0/0x1a0 [ 1137.446652] ? snprintf+0xbb/0xf0 [ 1137.450118] ? vsprintf+0x30/0x40 [ 1137.453579] ? set_blocksize+0x2bf/0x340 [ 1137.457667] ? memcpy+0x46/0x50 [ 1137.460971] fill_super+0x894/0x1990 [ 1137.464705] ? gfs2_online_uevent+0x2d0/0x2d0 [ 1137.464742] ? snprintf+0xbb/0xf0 [ 1137.464756] ? vsprintf+0x40/0x40 [ 1137.464788] ? ns_capable_common+0x141/0x170 [ 1137.472754] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 1137.472769] ? set_blocksize+0x2bf/0x340 [ 1137.472786] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 1137.472805] gfs2_mount+0x5db/0x6ee [ 1137.472821] ? fill_super+0x1990/0x1990 [ 1137.472862] ? vfs_parse_fs_string+0x1c5/0x2b0 [ 1137.485714] ? vfs_parse_fs_param+0x4b0/0x4b0 [ 1137.485731] ? fill_super+0x1990/0x1990 [ 1137.485747] legacy_get_tree+0xf2/0x200 [ 1137.485769] vfs_get_tree+0x123/0x450 [ 1137.485788] do_mount+0x1622/0x2fa0 [ 1137.485811] ? copy_mount_string+0x40/0x40 [ 1137.495393] ? kmem_cache_alloc_trace+0x354/0x760 [ 1137.495412] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 1137.495426] ? _copy_from_user+0xdd/0x150 [ 1137.495445] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 1137.495460] ? copy_mount_options+0x30e/0x440 [ 1137.495480] ksys_mount+0xdb/0x150 [ 1137.507653] __x64_sys_mount+0xbe/0x150 [ 1137.507675] do_syscall_64+0x1a3/0x800 [ 1137.507695] ? syscall_return_slowpath+0x5f0/0x5f0 [ 1137.507712] ? prepare_exit_to_usermode+0x232/0x3b0 [ 1137.507732] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 1137.516205] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 1137.516218] RIP: 0033:0x45a93a [ 1137.516234] Code: b8 a6 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 ed 8c fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 0f 83 ca 8c fb ff c3 66 0f 1f 84 00 00 00 00 00 [ 1137.516243] RSP: 002b:00007fdbfe5d2a88 EFLAGS: 00000206 ORIG_RAX: 00000000000000a5 [ 1137.516257] RAX: ffffffffffffffda RBX: 00007fdbfe5d2b30 RCX: 000000000045a93a [ 1137.516265] RDX: 00007fdbfe5d2ad0 RSI: 0000000020000200 RDI: 00007fdbfe5d2af0 [ 1137.516277] RBP: 0000000020000200 R08: 00007fdbfe5d2b30 R09: 00007fdbfe5d2ad0 03:47:57 executing program 0: socketpair$unix(0x1, 0x1, 0x0, &(0x7f0000000440)={0xffffffffffffffff, 0xffffffffffffffff}) ioctl$PERF_EVENT_IOC_ENABLE(r0, 0x8912, 0x400200) r1 = openat$kvm(0xffffffffffffff9c, &(0x7f00000000c0)='/dev/kvm\x00', 0x0, 0x0) r2 = openat$dlm_monitor(0xffffffffffffff9c, &(0x7f0000000340)='/dev/dlm-monitor\x00', 0x0, 0x0) r3 = ioctl$KVM_CREATE_VM(r1, 0xae01, 0x0) r4 = ioctl$KVM_CREATE_VCPU(r3, 0xae41, 0x0) write$RDMA_USER_CM_CMD_CREATE_ID(r2, &(0x7f0000000180)={0x0, 0x18, 0xfa00, {0x4, &(0x7f0000000140)={0xffffffffffffffff}, 0x106, 0x1009}}, 0x20) write$RDMA_USER_CM_CMD_RESOLVE_ROUTE(r2, &(0x7f0000000200)={0x4, 0x8, 0xfa00, {r5, 0xfffffffffffffe00}}, 0x10) syz_kvm_setup_cpu$x86(r3, 0xffffffffffffffff, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x0, 0x0, 0x0) ioctl$EVIOCGRAB(r2, 0x40044590, &(0x7f0000000100)=0x81) syz_kvm_setup_cpu$x86(0xffffffffffffffff, r4, &(0x7f0000000000/0x18000)=nil, &(0x7f00000001c0)=[@text64={0x40, &(0x7f0000000040)="b9800000c00f3235001000000f30f24c0f2c49e8426dc4027d3493b80800003626660f7e676d660f1678b06cc403f9dfbeb70000000bc7442400f5000000c744240284d178bcff1c24f2f347dbe1", 0x4e}], 0x1, 0x48, 0x0, 0x0) pipe2(&(0x7f0000000000), 0x0) ioctl$KVM_RUN(r4, 0xae80, 0x0) 03:47:57 executing program 1: r0 = openat$kvm(0xffffffffffffff9c, &(0x7f0000000140)='/dev/kvm\x00', 0x0, 0x0) r1 = ioctl$KVM_CREATE_VM(r0, 0xae01, 0x0) r2 = ioctl$KVM_CREATE_VCPU(r1, 0xae41, 0x0) ioctl$KVM_SET_USER_MEMORY_REGION(r1, 0x4020ae46, &(0x7f0000000400)={0x0, 0x3, 0x0, 0x2000, &(0x7f0000000000/0x2000)=nil}) syz_kvm_setup_cpu$x86(r1, 0xffffffffffffffff, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x0, 0x0, 0xfffffffffffffe78) sendmmsg$unix(0xffffffffffffffff, &(0x7f0000002780)=[{0x0, 0x0, &(0x7f0000001d00)=[{&(0x7f0000000bc0)="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", 0x3c5}], 0x1}], 0x1, 0x0) ioctl$KVM_REGISTER_COALESCED_MMIO(r1, 0x4010ae67, &(0x7f00000000c0)={0x0, 0x15200}) syz_kvm_setup_cpu$x86(0xffffffffffffffff, r2, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x8, 0x0, 0x0) ioctl$KVM_RUN(r2, 0xae80, 0x18) 03:47:57 executing program 2: r0 = socket$inet6(0xa, 0x2, 0x0) connect$inet6(r0, &(0x7f0000000180)={0xa, 0x0, 0x0, @local, 0x4}, 0x1c) [ 1137.531934] R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000003 [ 1137.531944] R13: 0000000000000000 R14: 00000000004db380 R15: 00000000ffffffff [ 1137.587026] kobject_add_internal failed for _ with -EEXIST, don't try to register things with the same name in the same directory. 03:47:57 executing program 2: r0 = socket$inet6(0xa, 0x2, 0x0) connect$inet6(r0, &(0x7f0000000180)={0xa, 0x0, 0x0, @local, 0x4}, 0x1c) [ 1137.763846] gfs2: fsid=_: Trying to join cluster "lock_nolock", "_" [ 1137.796294] gfs2: fsid=_: Now mounting FS... [ 1137.838557] gfs2: not a GFS2 filesystem [ 1137.853634] gfs2: fsid=_: can't read superblock 03:47:57 executing program 2: r0 = socket$inet6(0xa, 0x2, 0x0) connect$inet6(r0, &(0x7f0000000180)={0xa, 0x0, 0x0, @local, 0x4}, 0x1c) [ 1137.887966] gfs2: fsid=_: can't read superblock: -22 [ 1137.890182] gfs2: fsid=_: error -17 adding sysfs files 03:47:57 executing program 1: r0 = openat$kvm(0xffffffffffffff9c, &(0x7f0000000140)='/dev/kvm\x00', 0x0, 0x0) r1 = ioctl$KVM_CREATE_VM(r0, 0xae01, 0x0) r2 = ioctl$KVM_CREATE_VCPU(r1, 0xae41, 0x0) ioctl$KVM_SET_USER_MEMORY_REGION(r1, 0x4020ae46, &(0x7f0000000400)={0x0, 0x3, 0x0, 0x2000, &(0x7f0000000000/0x2000)=nil}) syz_kvm_setup_cpu$x86(r1, 0xffffffffffffffff, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x0, 0x0, 0xfffffffffffffe78) sendmmsg$unix(0xffffffffffffffff, &(0x7f0000002780)=[{0x0, 0x0, &(0x7f0000001d00)=[{&(0x7f0000000bc0)="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", 0x3c5}], 0x1}], 0x1, 0x0) ioctl$KVM_REGISTER_COALESCED_MMIO(r1, 0x4010ae67, &(0x7f00000000c0)={0x0, 0x15200}) syz_kvm_setup_cpu$x86(0xffffffffffffffff, r2, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x8, 0x0, 0x0) ioctl$KVM_RUN(r2, 0xae80, 0x840f000000000000) 03:47:57 executing program 3: syz_mount_image$gfs2(&(0x7f0000000140)='gfs2\x00', &(0x7f0000000200)='./file0\x00', 0x170f, 0x0, 0x0, 0x0, &(0x7f00000003c0)={[{@locktable={'locktable', 0x3d, '/'}}, {@lockproto_nolock='lockproto=lock_nolock'}]}) 03:47:57 executing program 5: r0 = socket$inet(0x2, 0x4000000000000001, 0x0) setsockopt$inet_tcp_int(r0, 0x6, 0x80000000000002, &(0x7f0000000040)=0x74, 0x4) bind$inet(r0, &(0x7f0000000180)={0x2, 0x4e23, @multicast1}, 0x10) sendto$inet(r0, 0x0, 0x0, 0x200007fd, &(0x7f0000e68000)={0x2, 0x4e23, @local}, 0x10) write$binfmt_elf64(r0, &(0x7f00000012c0)=ANY=[@ANYBLOB="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"], 0x209) mmap(&(0x7f0000000000/0xb36000)=nil, 0xb36000, 0x3, 0x8031, 0xffffffffffffffff, 0x0) sendmmsg$inet_sctp(r0, &(0x7f0000002600)=[{0x0, 0x0, &(0x7f0000000240)=[{&(0x7f0000000380)}], 0x1, 0x0, 0x0, 0xf00}], 0x1, 0x0) 03:47:57 executing program 4: syz_mount_image$gfs2(&(0x7f0000000140)='gfs2\x00', &(0x7f0000000200)='./file0\x00', 0xf6ffffff, 0x0, 0x0, 0x0, &(0x7f00000003c0)={[{@locktable={'locktable', 0x3d, '/'}}, {@lockproto_nolock='lockproto=lock_nolock'}]}) socketpair$unix(0x1, 0x1, 0x0, &(0x7f0000000180)) 03:47:57 executing program 2: r0 = socket$inet6(0xa, 0x2, 0x0) connect$inet6(r0, &(0x7f0000000180)={0xa, 0x0, 0x0, @local, 0x4}, 0x1c) 03:47:57 executing program 0: socketpair$unix(0x1, 0x1, 0x0, &(0x7f0000000200)={0xffffffffffffffff, 0xffffffffffffffff}) ioctl$PERF_EVENT_IOC_ENABLE(r0, 0x8912, 0x400200) r1 = openat$kvm(0xffffffffffffff9c, &(0x7f00000000c0)='/dev/kvm\x00', 0x0, 0x0) openat$dlm_monitor(0xffffffffffffff9c, &(0x7f0000000340)='/dev/dlm-monitor\x00', 0x0, 0x0) r2 = ioctl$KVM_CREATE_VM(r1, 0xae01, 0x0) r3 = ioctl$KVM_CREATE_VCPU(r2, 0xae41, 0x0) syz_kvm_setup_cpu$x86(r2, 0xffffffffffffffff, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x0, 0x0, 0x0) syz_kvm_setup_cpu$x86(0xffffffffffffffff, r3, &(0x7f0000000000/0x18000)=nil, &(0x7f00000001c0)=[@text64={0x40, &(0x7f0000000040)="b9800000c00f3235001000000f30f24c0f2c49e8426dc4027d3493b80800003626660f7e676d660f1678b06cc403f9dfbeb70000000bc7442400f5000000c744240284d178bcff1c24f2f347dbe1", 0x4e}], 0x1, 0x48, 0x0, 0x0) pipe2(&(0x7f0000000000)={0xffffffffffffffff, 0xffffffffffffffff}, 0x0) ioctl$KVM_RUN(r4, 0xae80, 0x0) [ 1138.193699] gfs2: fsid=_: Trying to join cluster "lock_nolock", "_" [ 1138.223951] gfs2: fsid=_: Now mounting FS... [ 1138.251650] attempt to access beyond end of device 03:47:57 executing program 1: r0 = openat$kvm(0xffffffffffffff9c, &(0x7f0000000140)='/dev/kvm\x00', 0x0, 0x0) r1 = ioctl$KVM_CREATE_VM(r0, 0xae01, 0x0) r2 = ioctl$KVM_CREATE_VCPU(r1, 0xae41, 0x0) ioctl$KVM_SET_USER_MEMORY_REGION(r1, 0x4020ae46, &(0x7f0000000400)={0x0, 0x3, 0x0, 0x2000, &(0x7f0000000000/0x2000)=nil}) syz_kvm_setup_cpu$x86(r1, 0xffffffffffffffff, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x0, 0x0, 0xfffffffffffffe78) sendmmsg$unix(0xffffffffffffffff, &(0x7f0000002780)=[{0x0, 0x0, &(0x7f0000001d00)=[{&(0x7f0000000bc0)="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", 0x3c5}], 0x1}], 0x1, 0x0) ioctl$KVM_REGISTER_COALESCED_MMIO(r1, 0x4010ae67, &(0x7f00000000c0)={0x0, 0x15200}) syz_kvm_setup_cpu$x86(0xffffffffffffffff, r2, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x8, 0x0, 0x0) ioctl$KVM_RUN(r2, 0xae80, 0x300000000000000) 03:47:58 executing program 2: connect$inet6(0xffffffffffffffff, &(0x7f0000000180)={0xa, 0x0, 0x0, @local, 0x4}, 0x1c) [ 1138.273377] loop3: rw=4096, want=136, limit=11 [ 1138.281951] gfs2: error 10 reading superblock [ 1138.327932] gfs2: fsid=_: can't read superblock [ 1138.364931] gfs2: fsid=_: can't read superblock: -5 [ 1138.376096] sysfs: cannot create duplicate filename '/fs/gfs2/_' [ 1138.435545] CPU: 1 PID: 22664 Comm: syz-executor4 Not tainted 4.20.0-next-20190103 #4 [ 1138.443542] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 1138.452897] Call Trace: [ 1138.455503] dump_stack+0x1db/0x2d0 [ 1138.459140] ? dump_stack_print_info.cold+0x20/0x20 [ 1138.464183] ? _raw_spin_unlock_irqrestore+0xa4/0xe0 [ 1138.469298] sysfs_warn_dup.cold+0x1c/0x31 [ 1138.473544] sysfs_create_dir_ns+0x2ce/0x330 [ 1138.477967] ? sysfs_create_mount_point+0xa0/0xa0 [ 1138.482826] ? do_raw_spin_trylock+0x270/0x270 [ 1138.487423] kobject_add_internal.cold+0x129/0x6d8 [ 1138.492355] ? kobj_ns_type_registered+0x60/0x60 [ 1138.497114] ? kfree_const+0x59/0x70 [ 1138.500835] ? rcu_read_lock_sched_held+0x110/0x130 [ 1138.505853] ? kfree+0x1fa/0x230 [ 1138.509222] ? kfree_const+0x5e/0x70 [ 1138.512966] kobject_init_and_add+0x101/0x160 [ 1138.517464] ? kobject_add_internal+0x4b0/0x4b0 [ 1138.522165] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 1138.528229] ? vsnprintf+0x368/0x1b10 [ 1138.532043] gfs2_sys_fs_add+0x210/0x500 [ 1138.536116] ? recover_store+0x1a0/0x1a0 [ 1138.540193] ? snprintf+0xbb/0xf0 [ 1138.543647] ? vsprintf+0x30/0x40 [ 1138.547105] ? set_blocksize+0x2bf/0x340 [ 1138.551169] ? memcpy+0x46/0x50 [ 1138.554456] fill_super+0x894/0x1990 [ 1138.558180] ? gfs2_online_uevent+0x2d0/0x2d0 [ 1138.562693] ? snprintf+0xbb/0xf0 [ 1138.566144] ? vsprintf+0x40/0x40 [ 1138.569617] ? ns_capable_common+0x141/0x170 [ 1138.574040] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 1138.579098] ? set_blocksize+0x2bf/0x340 [ 1138.583165] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 1138.588704] gfs2_mount+0x5db/0x6ee [ 1138.592335] ? fill_super+0x1990/0x1990 [ 1138.596336] ? vfs_parse_fs_string+0x1c5/0x2b0 [ 1138.600917] ? vfs_parse_fs_param+0x4b0/0x4b0 [ 1138.605409] ? fill_super+0x1990/0x1990 [ 1138.609380] legacy_get_tree+0xf2/0x200 [ 1138.613384] vfs_get_tree+0x123/0x450 [ 1138.617190] do_mount+0x1622/0x2fa0 [ 1138.620832] ? copy_mount_string+0x40/0x40 [ 1138.625089] ? kmem_cache_alloc_trace+0x354/0x760 [ 1138.629935] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 1138.635469] ? _copy_from_user+0xdd/0x150 [ 1138.639615] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 1138.645151] ? copy_mount_options+0x30e/0x440 [ 1138.649651] ksys_mount+0xdb/0x150 [ 1138.653195] __x64_sys_mount+0xbe/0x150 [ 1138.657171] do_syscall_64+0x1a3/0x800 [ 1138.661069] ? syscall_return_slowpath+0x5f0/0x5f0 [ 1138.665999] ? prepare_exit_to_usermode+0x232/0x3b0 [ 1138.671019] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 1138.675867] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 1138.681061] RIP: 0033:0x45a93a [ 1138.684257] Code: b8 a6 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 ed 8c fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 0f 83 ca 8c fb ff c3 66 0f 1f 84 00 00 00 00 00 [ 1138.703171] RSP: 002b:00007ff699fe9a88 EFLAGS: 00000206 ORIG_RAX: 00000000000000a5 [ 1138.710874] RAX: ffffffffffffffda RBX: 00007ff699fe9b30 RCX: 000000000045a93a [ 1138.718137] RDX: 00007ff699fe9ad0 RSI: 0000000020000200 RDI: 00007ff699fe9af0 [ 1138.725397] RBP: 0000000020000200 R08: 00007ff699fe9b30 R09: 00007ff699fe9ad0 03:47:58 executing program 2: r0 = socket$inet6(0xa, 0x0, 0x0) connect$inet6(r0, &(0x7f0000000180)={0xa, 0x0, 0x0, @local, 0x4}, 0x1c) [ 1138.732659] R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000003 [ 1138.739923] R13: 0000000000000000 R14: 00000000004db380 R15: 00000000ffffffff [ 1138.828395] kobject_add_internal failed for _ with -EEXIST, don't try to register things with the same name in the same directory. 03:47:58 executing program 0: socketpair$unix(0x1, 0x1, 0x0, &(0x7f0000000440)={0xffffffffffffffff, 0xffffffffffffffff}) ioctl$PERF_EVENT_IOC_ENABLE(r0, 0x8912, 0x400200) r1 = openat$kvm(0xffffffffffffff9c, &(0x7f00000000c0)='/dev/kvm\x00', 0x0, 0x0) openat$dlm_monitor(0xffffffffffffff9c, &(0x7f0000000340)='/dev/dlm-monitor\x00', 0x0, 0x0) r2 = ioctl$KVM_CREATE_VM(r1, 0xae01, 0x0) r3 = ioctl$KVM_CREATE_VCPU(r2, 0xae41, 0x0) syz_init_net_socket$x25(0x9, 0x5, 0x0) syz_kvm_setup_cpu$x86(r2, 0xffffffffffffffff, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x0, 0x0, 0x0) syz_kvm_setup_cpu$x86(0xffffffffffffffff, r3, &(0x7f0000000000/0x18000)=nil, &(0x7f00000001c0)=[@text64={0x40, &(0x7f0000000040)="b9800000c00f3235001000000f30f24c0f2c49e8426dc4027d3493b80800003626660f7e676d660f1678b06cc403f9dfbeb70000000bc7442400f5000000c744240284d178bcff1c24f2f347dbe1", 0x4e}], 0x1, 0x48, 0x0, 0x0) pipe2(&(0x7f0000000000), 0x0) ioctl$KVM_RUN(r3, 0xae80, 0x0) 03:47:58 executing program 1: r0 = openat$kvm(0xffffffffffffff9c, &(0x7f0000000140)='/dev/kvm\x00', 0x0, 0x0) r1 = ioctl$KVM_CREATE_VM(r0, 0xae01, 0x0) r2 = ioctl$KVM_CREATE_VCPU(r1, 0xae41, 0x0) ioctl$KVM_SET_USER_MEMORY_REGION(r1, 0x4020ae46, &(0x7f0000000400)={0x0, 0x3, 0x0, 0x2000, &(0x7f0000000000/0x2000)=nil}) syz_kvm_setup_cpu$x86(r1, 0xffffffffffffffff, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x0, 0x0, 0xfffffffffffffe78) sendmmsg$unix(0xffffffffffffffff, &(0x7f0000002780)=[{0x0, 0x0, &(0x7f0000001d00)=[{&(0x7f0000000bc0)="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", 0x3c5}], 0x1}], 0x1, 0x0) ioctl$KVM_REGISTER_COALESCED_MMIO(r1, 0x4010ae67, &(0x7f00000000c0)={0x0, 0x15200}) syz_kvm_setup_cpu$x86(0xffffffffffffffff, r2, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x8, 0x0, 0x0) ioctl$KVM_RUN(r2, 0xae80, 0x8c0f0000) [ 1138.896083] gfs2: fsid=_: error -17 adding sysfs files [ 1138.912454] gfs2: fsid=_: Trying to join cluster "lock_nolock", "_" [ 1138.959085] gfs2: fsid=_: Now mounting FS... [ 1138.976402] attempt to access beyond end of device [ 1139.019992] loop3: rw=4096, want=136, limit=11 03:47:58 executing program 2: socket$inet6(0xa, 0x2, 0x0) connect$inet6(0xffffffffffffffff, &(0x7f0000000180)={0xa, 0x0, 0x0, @local, 0x4}, 0x1c) [ 1139.052269] sysfs: cannot create duplicate filename '/fs/gfs2/_' [ 1139.055582] gfs2: error 10 reading superblock [ 1139.091874] gfs2: fsid=_: can't read superblock [ 1139.111561] gfs2: fsid=_: can't read superblock: -5 [ 1139.137860] CPU: 0 PID: 22664 Comm: syz-executor4 Not tainted 4.20.0-next-20190103 #4 [ 1139.145838] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 1139.155187] Call Trace: [ 1139.157791] dump_stack+0x1db/0x2d0 [ 1139.161438] ? dump_stack_print_info.cold+0x20/0x20 [ 1139.166473] ? _raw_spin_unlock_irqrestore+0xa4/0xe0 [ 1139.171598] sysfs_warn_dup.cold+0x1c/0x31 [ 1139.175851] sysfs_create_dir_ns+0x2ce/0x330 [ 1139.180274] ? sysfs_create_mount_point+0xa0/0xa0 [ 1139.185125] ? do_raw_spin_trylock+0x270/0x270 [ 1139.185156] kobject_add_internal.cold+0x129/0x6d8 [ 1139.185177] ? kobj_ns_type_registered+0x60/0x60 [ 1139.185194] ? kfree_const+0x59/0x70 [ 1139.203138] ? rcu_read_lock_sched_held+0x110/0x130 [ 1139.203155] ? kfree+0x1fa/0x230 [ 1139.203173] ? kfree_const+0x5e/0x70 [ 1139.203193] kobject_init_and_add+0x101/0x160 [ 1139.203209] ? kobject_add_internal+0x4b0/0x4b0 [ 1139.224431] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 1139.229975] ? vsnprintf+0x368/0x1b10 [ 1139.233791] gfs2_sys_fs_add+0x210/0x500 [ 1139.233807] ? recover_store+0x1a0/0x1a0 [ 1139.233825] ? snprintf+0xbb/0xf0 [ 1139.233840] ? vsprintf+0x30/0x40 [ 1139.233856] ? set_blocksize+0x2bf/0x340 [ 1139.241983] ? memcpy+0x46/0x50 [ 1139.242004] fill_super+0x894/0x1990 [ 1139.242029] ? gfs2_online_uevent+0x2d0/0x2d0 [ 1139.253017] ? snprintf+0xbb/0xf0 [ 1139.253032] ? vsprintf+0x40/0x40 [ 1139.253076] ? ns_capable_common+0x141/0x170 [ 1139.253092] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 1139.260093] ? set_blocksize+0x2bf/0x340 [ 1139.260112] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 1139.260142] gfs2_mount+0x5db/0x6ee [ 1139.268127] ? fill_super+0x1990/0x1990 [ 1139.268173] ? vfs_parse_fs_string+0x1c5/0x2b0 [ 1139.276035] ? vfs_parse_fs_param+0x4b0/0x4b0 [ 1139.276064] ? fill_super+0x1990/0x1990 [ 1139.276081] legacy_get_tree+0xf2/0x200 [ 1139.276106] vfs_get_tree+0x123/0x450 [ 1139.285191] do_mount+0x1622/0x2fa0 [ 1139.285216] ? copy_mount_string+0x40/0x40 [ 1139.285234] ? kmem_cache_alloc_trace+0x354/0x760 [ 1139.285250] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 1139.294410] ? _copy_from_user+0xdd/0x150 [ 1139.294428] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 1139.294442] ? copy_mount_options+0x30e/0x440 [ 1139.294462] ksys_mount+0xdb/0x150 [ 1139.315383] __x64_sys_mount+0xbe/0x150 [ 1139.315403] do_syscall_64+0x1a3/0x800 [ 1139.315420] ? syscall_return_slowpath+0x5f0/0x5f0 [ 1139.322830] ? prepare_exit_to_usermode+0x232/0x3b0 [ 1139.322851] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 1139.322874] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 1139.322887] RIP: 0033:0x45a93a [ 1139.386229] Code: b8 a6 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 ed 8c fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 0f 83 ca 8c fb ff c3 66 0f 1f 84 00 00 00 00 00 [ 1139.405124] RSP: 002b:00007ff699fe9a88 EFLAGS: 00000206 ORIG_RAX: 00000000000000a5 [ 1139.412838] RAX: ffffffffffffffda RBX: 00007ff699fe9b30 RCX: 000000000045a93a [ 1139.420281] RDX: 00007ff699fe9ad0 RSI: 0000000020000200 RDI: 00007ff699fe9af0 [ 1139.427585] RBP: 0000000020000200 R08: 00007ff699fe9b30 R09: 00007ff699fe9ad0 03:47:59 executing program 2: r0 = socket$inet6(0xa, 0x2, 0x0) connect$inet6(r0, 0x0, 0x0) [ 1139.434881] R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000003 [ 1139.442168] R13: 0000000000000000 R14: 00000000004db380 R15: 00000000ffffffff [ 1139.543142] kobject_add_internal failed for _ with -EEXIST, don't try to register things with the same name in the same directory. [ 1139.560686] gfs2: fsid=_: error -17 adding sysfs files 03:47:59 executing program 3: syz_mount_image$gfs2(&(0x7f0000000140)='gfs2\x00', &(0x7f0000000200)='./file0\x00', 0x10000000, 0x0, 0x0, 0x0, &(0x7f00000003c0)={[{@locktable={'locktable', 0x3d, '/'}}, {@lockproto_nolock='lockproto=lock_nolock'}]}) 03:47:59 executing program 2: r0 = socket$inet6(0xa, 0x2, 0x0) connect$inet6(r0, &(0x7f0000000180)={0xa, 0x0, 0x0, @local}, 0x1c) 03:47:59 executing program 0: socketpair$unix(0x1, 0x1, 0x0, &(0x7f0000000440)={0xffffffffffffffff, 0xffffffffffffffff}) ioctl$PERF_EVENT_IOC_ENABLE(r0, 0x8912, 0x400200) r1 = openat$kvm(0xffffffffffffff9c, &(0x7f00000000c0)='/dev/kvm\x00', 0x0, 0x0) r2 = openat$dlm_monitor(0xffffffffffffff9c, &(0x7f0000000340)='/dev/dlm-monitor\x00', 0x0, 0x0) setsockopt$inet_sctp_SCTP_PARTIAL_DELIVERY_POINT(r2, 0x84, 0x13, &(0x7f0000000000)=0x3, 0x4) r3 = ioctl$KVM_CREATE_VM(r1, 0xae01, 0x0) r4 = ioctl$KVM_CREATE_VCPU(r3, 0xae41, 0x0) syz_kvm_setup_cpu$x86(r3, 0xffffffffffffffff, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x0, 0x0, 0x0) syz_kvm_setup_cpu$x86(0xffffffffffffffff, r4, &(0x7f0000000000/0x18000)=nil, &(0x7f00000001c0)=[@text64={0x40, &(0x7f0000000040)="b9800000c00f3235001000000f30f24c0f2c49e8426dc4027d3493b80800003626660f7e676d660f1678b06cc403f9dfbeb70000000bc7442400f5000000c744240284d178bcff1c24f2f347dbe1", 0x4e}], 0x1, 0x48, 0x0, 0x0) ioctl$KVM_RUN(r4, 0xae80, 0x0) 03:47:59 executing program 1: r0 = openat$kvm(0xffffffffffffff9c, &(0x7f0000000140)='/dev/kvm\x00', 0x0, 0x0) r1 = ioctl$KVM_CREATE_VM(r0, 0xae01, 0x0) r2 = ioctl$KVM_CREATE_VCPU(r1, 0xae41, 0x0) ioctl$KVM_SET_USER_MEMORY_REGION(r1, 0x4020ae46, &(0x7f0000000400)={0x0, 0x3, 0x0, 0x2000, &(0x7f0000000000/0x2000)=nil}) syz_kvm_setup_cpu$x86(r1, 0xffffffffffffffff, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x0, 0x0, 0xfffffffffffffe78) sendmmsg$unix(0xffffffffffffffff, &(0x7f0000002780)=[{0x0, 0x0, &(0x7f0000001d00)=[{&(0x7f0000000bc0)="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", 0x3c5}], 0x1}], 0x1, 0x0) ioctl$KVM_REGISTER_COALESCED_MMIO(r1, 0x4010ae67, &(0x7f00000000c0)={0x0, 0x15200}) syz_kvm_setup_cpu$x86(0xffffffffffffffff, r2, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x8, 0x0, 0x0) ioctl$KVM_RUN(r2, 0xae80, 0x8000000) 03:47:59 executing program 5: r0 = socket$inet(0x2, 0x4000000000000001, 0x0) setsockopt$inet_tcp_int(r0, 0x6, 0x80000000000002, &(0x7f0000000040)=0x74, 0x4) bind$inet(r0, &(0x7f0000000180)={0x2, 0x4e23, @multicast1}, 0x10) sendto$inet(r0, 0x0, 0x0, 0x200007fd, &(0x7f0000e68000)={0x2, 0x4e23, @local}, 0x10) write$binfmt_elf64(r0, &(0x7f00000012c0)=ANY=[@ANYBLOB="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"], 0x209) mmap(&(0x7f0000000000/0xb36000)=nil, 0xb36000, 0x3, 0x8031, 0xffffffffffffffff, 0x0) sendmmsg$inet_sctp(r0, &(0x7f0000002600)=[{0x0, 0x0, &(0x7f0000000240)=[{&(0x7f0000000380)}], 0x1, 0x0, 0x0, 0xf00}], 0x1, 0x0) 03:47:59 executing program 4: syz_mount_image$gfs2(&(0x7f0000000140)='gfs2\x00', &(0x7f0000000200)='./file0\x00', 0x48000000, 0x0, 0x0, 0x0, &(0x7f00000003c0)={[{@locktable={'locktable', 0x3d, '/'}}, {@lockproto_nolock='lockproto=lock_nolock'}]}) socketpair$unix(0x1, 0x1, 0x0, &(0x7f0000000180)) 03:47:59 executing program 2: socket$inet6(0xa, 0x3, 0x800000000000004) r0 = socket$inet_sctp(0x2, 0x800000000000001, 0x84) sendto$inet(r0, &(0x7f0000a34fff)='H', 0x1, 0x0, 0x0, 0x0) socketpair$unix(0x1, 0x1, 0x0, &(0x7f0000000000)={0xffffffffffffffff, 0xffffffffffffffff}) ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200) r2 = memfd_create(&(0x7f0000000100)='}\x00', 0x0) ftruncate(r2, 0x100) sendto$inet(r0, &(0x7f000026cfff)="c6", 0x1, 0x0, 0x0, 0x0) shutdown(r0, 0x1) setsockopt$inet_sctp_SCTP_PEER_ADDR_PARAMS(r0, 0x84, 0x9, &(0x7f00000001c0)={0x0, @in6, 0x0, 0x10001, 0x0, 0x0, 0x46}, 0x98) setsockopt$inet_sctp_SCTP_PEER_ADDR_PARAMS(r0, 0x84, 0x9, &(0x7f00000004c0)={0x0, @in, 0x0, 0x0, 0x0, 0x0, 0x34}, 0x98) setsockopt$inet_sctp_SCTP_PEER_ADDR_PARAMS(r0, 0x84, 0x9, &(0x7f0000000340)={0x0, @in, 0x0, 0x0, 0x0, 0x0, 0x4}, 0x98) [ 1139.819762] gfs2: fsid=_: Trying to join cluster "lock_nolock", "_" [ 1139.849400] sysfs: cannot create duplicate filename '/fs/gfs2/_' [ 1139.893541] gfs2: fsid=_: Now mounting FS... [ 1139.926003] CPU: 1 PID: 22720 Comm: syz-executor4 Not tainted 4.20.0-next-20190103 #4 [ 1139.934045] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 1139.943418] Call Trace: [ 1139.946016] dump_stack+0x1db/0x2d0 [ 1139.946040] ? dump_stack_print_info.cold+0x20/0x20 [ 1139.946083] ? _raw_spin_unlock_irqrestore+0xa4/0xe0 [ 1139.946138] sysfs_warn_dup.cold+0x1c/0x31 [ 1139.964118] sysfs_create_dir_ns+0x2ce/0x330 [ 1139.968569] ? sysfs_create_mount_point+0xa0/0xa0 [ 1139.973439] ? do_raw_spin_trylock+0x270/0x270 [ 1139.973476] kobject_add_internal.cold+0x129/0x6d8 [ 1139.973500] ? kobj_ns_type_registered+0x60/0x60 [ 1139.973514] ? kfree_const+0x59/0x70 [ 1139.973529] ? rcu_read_lock_sched_held+0x110/0x130 [ 1139.973545] ? kfree+0x1fa/0x230 [ 1139.973563] ? kfree_const+0x5e/0x70 [ 1139.973581] kobject_init_and_add+0x101/0x160 [ 1139.973598] ? kobject_add_internal+0x4b0/0x4b0 [ 1139.973618] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 1139.973633] ? vsnprintf+0x368/0x1b10 [ 1139.973663] gfs2_sys_fs_add+0x210/0x500 [ 1139.973678] ? recover_store+0x1a0/0x1a0 [ 1139.996671] ? snprintf+0xbb/0xf0 [ 1139.996687] ? vsprintf+0x30/0x40 [ 1139.996705] ? set_blocksize+0x2bf/0x340 [ 1140.041285] ? memcpy+0x46/0x50 [ 1140.041310] fill_super+0x894/0x1990 [ 1140.041338] ? gfs2_online_uevent+0x2d0/0x2d0 [ 1140.041362] ? snprintf+0xbb/0xf0 [ 1140.041377] ? vsprintf+0x40/0x40 [ 1140.059794] ? ns_capable_common+0x141/0x170 [ 1140.064237] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 1140.069268] ? set_blocksize+0x2bf/0x340 [ 1140.073347] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 1140.078902] gfs2_mount+0x5db/0x6ee [ 1140.082547] ? fill_super+0x1990/0x1990 [ 1140.086553] ? vfs_parse_fs_string+0x1c5/0x2b0 [ 1140.091158] ? vfs_parse_fs_param+0x4b0/0x4b0 [ 1140.095662] ? fill_super+0x1990/0x1990 [ 1140.099662] legacy_get_tree+0xf2/0x200 [ 1140.103654] vfs_get_tree+0x123/0x450 [ 1140.107468] do_mount+0x1622/0x2fa0 [ 1140.111112] ? copy_mount_string+0x40/0x40 [ 1140.115359] ? kmem_cache_alloc_trace+0x354/0x760 [ 1140.120214] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 1140.125789] ? _copy_from_user+0xdd/0x150 [ 1140.129955] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 1140.135519] ? copy_mount_options+0x30e/0x440 [ 1140.140066] ksys_mount+0xdb/0x150 [ 1140.143627] __x64_sys_mount+0xbe/0x150 [ 1140.147618] do_syscall_64+0x1a3/0x800 [ 1140.151521] ? syscall_return_slowpath+0x5f0/0x5f0 [ 1140.156466] ? prepare_exit_to_usermode+0x232/0x3b0 [ 1140.161500] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 1140.166359] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 1140.171557] RIP: 0033:0x45a93a 03:47:59 executing program 0: socketpair$unix(0x1, 0x1, 0x0, &(0x7f0000000440)={0xffffffffffffffff, 0xffffffffffffffff}) ioctl$PERF_EVENT_IOC_ENABLE(r0, 0x8912, 0x400200) r1 = openat$kvm(0xffffffffffffff9c, &(0x7f00000000c0)='/dev/kvm\x00', 0x0, 0x0) r2 = openat$dlm_monitor(0xffffffffffffff9c, &(0x7f0000000340)='/dev/dlm-monitor\x00', 0x0, 0x0) ioctl$KVM_GET_NR_MMU_PAGES(r2, 0xae45, 0x3ff) syz_open_dev$vcsa(&(0x7f0000000100)='/dev/vcsa#\x00', 0xce20, 0x0) r3 = getpgid(0xffffffffffffffff) sched_setparam(r3, &(0x7f0000000140)=0xeffd) r4 = ioctl$KVM_CREATE_VM(r1, 0xae01, 0x0) r5 = ioctl$KVM_CREATE_VCPU(r4, 0xae41, 0x0) syz_kvm_setup_cpu$x86(r4, 0xffffffffffffffff, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x0, 0x0, 0x0) syz_kvm_setup_cpu$x86(0xffffffffffffffff, r5, &(0x7f0000000000/0x18000)=nil, &(0x7f00000001c0)=[@text64={0x40, &(0x7f0000000040)="b9800000c00f3235001000000f30f24c0f2c49e8426dc4027d3493b80800003626660f7e676d660f1678b06cc403f9dfbeb70000000bc7442400f5000000c744240284d178bcff1c24f2f347dbe1", 0x4e}], 0x1, 0x48, 0x0, 0x0) pipe2(&(0x7f0000000000), 0x0) ioctl$KVM_RUN(r5, 0xae80, 0x0) 03:47:59 executing program 2: [ 1140.174761] Code: b8 a6 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 ed 8c fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 0f 83 ca 8c fb ff c3 66 0f 1f 84 00 00 00 00 00 [ 1140.184213] gfs2: not a GFS2 filesystem [ 1140.193673] RSP: 002b:00007ff699fe9a88 EFLAGS: 00000206 ORIG_RAX: 00000000000000a5 [ 1140.193690] RAX: ffffffffffffffda RBX: 00007ff699fe9b30 RCX: 000000000045a93a [ 1140.193700] RDX: 00007ff699fe9ad0 RSI: 0000000020000200 RDI: 00007ff699fe9af0 [ 1140.193710] RBP: 0000000020000200 R08: 00007ff699fe9b30 R09: 00007ff699fe9ad0 [ 1140.193719] R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000003 [ 1140.193728] R13: 0000000000000000 R14: 00000000004db380 R15: 00000000ffffffff [ 1140.214737] kobject_add_internal failed for _ with -EEXIST, don't try to register things with the same name in the same directory. 03:48:00 executing program 2: [ 1140.336478] gfs2: fsid=_: can't read superblock 03:48:00 executing program 1: r0 = openat$kvm(0xffffffffffffff9c, &(0x7f0000000140)='/dev/kvm\x00', 0x0, 0x0) r1 = ioctl$KVM_CREATE_VM(r0, 0xae01, 0x0) r2 = ioctl$KVM_CREATE_VCPU(r1, 0xae41, 0x0) ioctl$KVM_SET_USER_MEMORY_REGION(r1, 0x4020ae46, &(0x7f0000000400)={0x0, 0x3, 0x0, 0x2000, &(0x7f0000000000/0x2000)=nil}) syz_kvm_setup_cpu$x86(r1, 0xffffffffffffffff, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x0, 0x0, 0xfffffffffffffe78) sendmmsg$unix(0xffffffffffffffff, &(0x7f0000002780)=[{0x0, 0x0, &(0x7f0000001d00)=[{&(0x7f0000000bc0)="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", 0x3c5}], 0x1}], 0x1, 0x0) ioctl$KVM_REGISTER_COALESCED_MMIO(r1, 0x4010ae67, &(0x7f00000000c0)={0x0, 0x15200}) syz_kvm_setup_cpu$x86(0xffffffffffffffff, r2, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x8, 0x0, 0x0) ioctl$KVM_RUN(r2, 0xae80, 0x1600) [ 1140.357371] gfs2: fsid=_: can't read superblock: -22 [ 1140.365292] gfs2: fsid=_: error -17 adding sysfs files 03:48:00 executing program 0: socketpair$unix(0x1, 0x1, 0x0, &(0x7f0000000440)={0xffffffffffffffff, 0xffffffffffffffff}) ioctl$PERF_EVENT_IOC_ENABLE(r0, 0x8912, 0x400200) r1 = openat$kvm(0xffffffffffffff9c, &(0x7f00000000c0)='/dev/kvm\x00', 0x0, 0x0) openat$dlm_monitor(0xffffffffffffff9c, &(0x7f0000000340)='/dev/dlm-monitor\x00', 0x0, 0x0) r2 = ioctl$KVM_CREATE_VM(r1, 0xae01, 0x0) r3 = ioctl$KVM_CREATE_VCPU(r2, 0xae41, 0xfffffffffffffffe) syz_kvm_setup_cpu$x86(r2, 0xffffffffffffffff, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x0, 0x0, 0x0) syz_kvm_setup_cpu$x86(0xffffffffffffffff, r3, &(0x7f0000000000/0x18000)=nil, &(0x7f00000001c0)=[@text64={0x40, &(0x7f0000000040)="b9800000c00f3235001000000f30f24c0f2c49e8426dc4027d3493b80800003626660f7e676d660f1678b06cc403f9dfbeb70000000bc7442400f5000000c744240284d178bcff1c24f2f347dbe1", 0x4e}], 0x1, 0x48, 0x0, 0x0) pipe2(&(0x7f0000000000), 0x0) ioctl$KVM_RUN(r3, 0xae80, 0x0) [ 1140.635658] gfs2: fsid=_: Trying to join cluster "lock_nolock", "_" [ 1140.673129] gfs2: fsid=_: Now mounting FS... 03:48:00 executing program 3: syz_mount_image$gfs2(&(0x7f0000000140)='gfs2\x00', &(0x7f0000000200)='./file0\x00', 0x19, 0x0, 0x0, 0x0, &(0x7f00000003c0)={[{@locktable={'locktable', 0x3d, '/'}}, {@lockproto_nolock='lockproto=lock_nolock'}]}) 03:48:00 executing program 2: 03:48:00 executing program 0: socketpair$unix(0x1, 0x1, 0x0, &(0x7f0000000440)={0xffffffffffffffff, 0xffffffffffffffff}) ioctl$PERF_EVENT_IOC_ENABLE(r0, 0x8912, 0x400200) r1 = openat$kvm(0xffffffffffffff9c, &(0x7f00000000c0)='/dev/kvm\x00', 0x0, 0x0) r2 = openat$dlm_monitor(0xffffffffffffff9c, &(0x7f0000000340)='/dev/dlm-monitor\x00', 0x0, 0x0) getsockopt$inet_sctp_SCTP_GET_LOCAL_ADDRS(r2, 0x84, 0x6d, &(0x7f0000000200)={0x0, 0xe9, "35b8f2e88b3c47e869ae276f4e0f5064c7118d393133b1ca1f63255b737eaf5c60ded03e806feef3bf7bacadd32a3062104d80cf8d1baefe7ffee4a6e0d54316458ce0af7b1848e4ab32489564a94d8ed1fa4e7931bae92fe2f7da495d4c8bd77923233bdfaea8d77e5c191c89ddb3684569f64101138e1f13cdb3ec6acb9425457fab089253f7d28cd27d862f00d4268ad8b88d80728d955abb3e4de6dcb3d7faa7818aa6719c2b1fba93dfdbb4f5318ebd0c76bb93b1aef796af78f47fc8f1ddaf21c873228e319e53a37107c79547dd973d0ff6c3b44fe79c79b909332bc858fc481038bfe1bb7a"}, &(0x7f0000000100)=0xf1) getsockopt$inet_sctp_SCTP_ENABLE_STREAM_RESET(r2, 0x84, 0x76, &(0x7f0000000140)={r3, 0x5}, &(0x7f0000000180)=0x8) r4 = ioctl$KVM_CREATE_VM(r1, 0xae01, 0x0) r5 = ioctl$KVM_CREATE_VCPU(r4, 0xae41, 0x0) syz_kvm_setup_cpu$x86(r4, 0xffffffffffffffff, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x0, 0x0, 0x0) syz_kvm_setup_cpu$x86(0xffffffffffffffff, r5, &(0x7f0000000000/0x18000)=nil, &(0x7f00000001c0)=[@text64={0x40, &(0x7f0000000040)="b9800000c00f3235001000000f30f24c0f2c49e8426dc4027d3493b80800003626660f7e676d660f1678b06cc403f9dfbeb70000000bc7442400f5000000c744240284d178bcff1c24f2f347dbe1", 0x4e}], 0x1, 0x48, 0x0, 0x0) pipe2(&(0x7f0000000000), 0x0) ioctl$KVM_RUN(r5, 0xae80, 0x0) 03:48:00 executing program 1: r0 = openat$kvm(0xffffffffffffff9c, &(0x7f0000000140)='/dev/kvm\x00', 0x0, 0x0) r1 = ioctl$KVM_CREATE_VM(r0, 0xae01, 0x0) r2 = ioctl$KVM_CREATE_VCPU(r1, 0xae41, 0x0) ioctl$KVM_SET_USER_MEMORY_REGION(r1, 0x4020ae46, &(0x7f0000000400)={0x0, 0x3, 0x0, 0x2000, &(0x7f0000000000/0x2000)=nil}) syz_kvm_setup_cpu$x86(r1, 0xffffffffffffffff, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x0, 0x0, 0xfffffffffffffe78) sendmmsg$unix(0xffffffffffffffff, &(0x7f0000002780)=[{0x0, 0x0, &(0x7f0000001d00)=[{&(0x7f0000000bc0)="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", 0x3c5}], 0x1}], 0x1, 0x0) ioctl$KVM_REGISTER_COALESCED_MMIO(r1, 0x4010ae67, &(0x7f00000000c0)={0x0, 0x15200}) syz_kvm_setup_cpu$x86(0xffffffffffffffff, r2, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x8, 0x0, 0x0) ioctl$KVM_RUN(r2, 0xae80, 0x1c00) [ 1140.713662] gfs2: not a GFS2 filesystem [ 1140.789020] gfs2: fsid=_: can't read superblock [ 1140.828027] gfs2: fsid=_: can't read superblock: -22 [ 1140.892963] sysfs: cannot create duplicate filename '/fs/gfs2/_' [ 1140.920159] CPU: 0 PID: 22759 Comm: syz-executor3 Not tainted 4.20.0-next-20190103 #4 [ 1140.928180] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 1140.937538] Call Trace: [ 1140.940146] dump_stack+0x1db/0x2d0 [ 1140.943790] ? dump_stack_print_info.cold+0x20/0x20 [ 1140.948832] ? _raw_spin_unlock_irqrestore+0xa4/0xe0 [ 1140.953956] sysfs_warn_dup.cold+0x1c/0x31 [ 1140.953975] sysfs_create_dir_ns+0x2ce/0x330 [ 1140.953992] ? sysfs_create_mount_point+0xa0/0xa0 [ 1140.967487] ? do_raw_spin_trylock+0x270/0x270 [ 1140.972114] kobject_add_internal.cold+0x129/0x6d8 [ 1140.977067] ? kobj_ns_type_registered+0x60/0x60 [ 1140.981829] ? kfree_const+0x59/0x70 [ 1140.985549] ? rcu_read_lock_sched_held+0x110/0x130 [ 1140.990579] ? kfree+0x1fa/0x230 [ 1140.990612] ? kfree_const+0x5e/0x70 [ 1140.990635] kobject_init_and_add+0x101/0x160 [ 1140.997721] ? kobject_add_internal+0x4b0/0x4b0 [ 1141.006901] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 1141.006917] ? vsnprintf+0x368/0x1b10 [ 1141.006943] gfs2_sys_fs_add+0x210/0x500 [ 1141.006958] ? recover_store+0x1a0/0x1a0 [ 1141.024392] ? snprintf+0xbb/0xf0 [ 1141.024406] ? vsprintf+0x30/0x40 [ 1141.024427] ? set_blocksize+0x2bf/0x340 [ 1141.031331] ? memcpy+0x46/0x50 [ 1141.031353] fill_super+0x894/0x1990 [ 1141.031379] ? gfs2_online_uevent+0x2d0/0x2d0 [ 1141.046911] ? snprintf+0xbb/0xf0 [ 1141.050368] ? vsprintf+0x40/0x40 [ 1141.053834] ? ns_capable_common+0x141/0x170 [ 1141.058244] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 1141.058259] ? set_blocksize+0x2bf/0x340 [ 1141.058276] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 1141.058293] gfs2_mount+0x5db/0x6ee [ 1141.067385] ? fill_super+0x1990/0x1990 [ 1141.067440] ? vfs_parse_fs_string+0x1c5/0x2b0 [ 1141.076598] ? vfs_parse_fs_param+0x4b0/0x4b0 [ 1141.076616] ? fill_super+0x1990/0x1990 [ 1141.076632] legacy_get_tree+0xf2/0x200 [ 1141.076654] vfs_get_tree+0x123/0x450 [ 1141.085189] do_mount+0x1622/0x2fa0 [ 1141.085215] ? copy_mount_string+0x40/0x40 [ 1141.085234] ? kmem_cache_alloc_trace+0x354/0x760 [ 1141.085254] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 1141.105083] ? _copy_from_user+0xdd/0x150 [ 1141.114196] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 1141.114227] ? copy_mount_options+0x30e/0x440 [ 1141.114250] ksys_mount+0xdb/0x150 [ 1141.114269] __x64_sys_mount+0xbe/0x150 03:48:00 executing program 5: r0 = socket$inet(0x2, 0x4000000000000001, 0x0) setsockopt$inet_tcp_int(r0, 0x6, 0x80000000000002, &(0x7f0000000040)=0x74, 0x4) bind$inet(r0, &(0x7f0000000180)={0x2, 0x4e23, @multicast1}, 0x10) sendto$inet(r0, 0x0, 0x0, 0x200007fd, &(0x7f0000e68000)={0x2, 0x4e23, @local}, 0x10) write$binfmt_elf64(r0, &(0x7f00000012c0)=ANY=[@ANYBLOB="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"], 0x209) mmap(&(0x7f0000000000/0xb36000)=nil, 0xb36000, 0x3, 0x8031, 0xffffffffffffffff, 0x0) sendmmsg$inet_sctp(r0, &(0x7f0000002600)=[{0x0, 0x0, &(0x7f0000000240)=[{&(0x7f0000000380)}], 0x1, 0x0, 0x0, 0xf00}], 0x1, 0x0) [ 1141.114289] do_syscall_64+0x1a3/0x800 [ 1141.123961] ? syscall_return_slowpath+0x5f0/0x5f0 [ 1141.123981] ? prepare_exit_to_usermode+0x232/0x3b0 [ 1141.124004] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 1141.124041] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 1141.124065] RIP: 0033:0x45a93a [ 1141.134112] Code: b8 a6 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 ed 8c fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 0f 83 ca 8c fb ff c3 66 0f 1f 84 00 00 00 00 00 [ 1141.134121] RSP: 002b:00007fdbfe5d2a88 EFLAGS: 00000206 ORIG_RAX: 00000000000000a5 [ 1141.134135] RAX: ffffffffffffffda RBX: 00007fdbfe5d2b30 RCX: 000000000045a93a [ 1141.134145] RDX: 00007fdbfe5d2ad0 RSI: 0000000020000200 RDI: 00007fdbfe5d2af0 [ 1141.134154] RBP: 0000000020000200 R08: 00007fdbfe5d2b30 R09: 00007fdbfe5d2ad0 [ 1141.134162] R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000003 [ 1141.134170] R13: 0000000000000000 R14: 00000000004db380 R15: 00000000ffffffff [ 1141.162267] kobject_add_internal failed for _ with -EEXIST, don't try to register things with the same name in the same directory. [ 1141.246217] gfs2: fsid=_: error -17 adding sysfs files 03:48:01 executing program 4: syz_mount_image$gfs2(&(0x7f0000000140)='gfs2\x00', &(0x7f0000000200)='./file0\x00', 0x6c00000000000000, 0x0, 0x0, 0x0, &(0x7f00000003c0)={[{@locktable={'locktable', 0x3d, '/'}}, {@lockproto_nolock='lockproto=lock_nolock'}]}) socketpair$unix(0x1, 0x1, 0x0, &(0x7f0000000180)) 03:48:01 executing program 2: 03:48:01 executing program 1: r0 = openat$kvm(0xffffffffffffff9c, &(0x7f0000000140)='/dev/kvm\x00', 0x0, 0x0) r1 = ioctl$KVM_CREATE_VM(r0, 0xae01, 0x0) r2 = ioctl$KVM_CREATE_VCPU(r1, 0xae41, 0x0) ioctl$KVM_SET_USER_MEMORY_REGION(r1, 0x4020ae46, &(0x7f0000000400)={0x0, 0x3, 0x0, 0x2000, &(0x7f0000000000/0x2000)=nil}) syz_kvm_setup_cpu$x86(r1, 0xffffffffffffffff, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x0, 0x0, 0xfffffffffffffe78) sendmmsg$unix(0xffffffffffffffff, &(0x7f0000002780)=[{0x0, 0x0, &(0x7f0000001d00)=[{&(0x7f0000000bc0)="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", 0x3c5}], 0x1}], 0x1, 0x0) ioctl$KVM_REGISTER_COALESCED_MMIO(r1, 0x4010ae67, &(0x7f00000000c0)={0x0, 0x15200}) syz_kvm_setup_cpu$x86(0xffffffffffffffff, r2, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x8, 0x0, 0x0) ioctl$KVM_RUN(r2, 0xae80, 0xf) 03:48:01 executing program 0: socketpair$unix(0x1, 0x1, 0x0, &(0x7f0000000440)={0xffffffffffffffff, 0xffffffffffffffff}) ioctl$PERF_EVENT_IOC_ENABLE(r0, 0x8912, 0x400200) openat$kvm(0xffffffffffffff9c, &(0x7f00000000c0)='/dev/kvm\x00', 0x0, 0x0) openat$dlm_monitor(0xffffffffffffff9c, &(0x7f0000000340)='/dev/dlm-monitor\x00', 0x0, 0x0) r1 = ioctl$KVM_CREATE_VCPU(0xffffffffffffffff, 0xae41, 0x0) syz_kvm_setup_cpu$x86(0xffffffffffffffff, 0xffffffffffffffff, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x0, 0x0, 0x0) syz_kvm_setup_cpu$x86(0xffffffffffffffff, r1, &(0x7f0000000000/0x18000)=nil, &(0x7f00000001c0)=[@text64={0x40, &(0x7f0000000040)="b9800000c00f3235001000000f30f24c0f2c49e8426dc4027d3493b80800003626660f7e676d660f1678b06cc403f9dfbeb70000000bc7442400f5000000c744240284d178bcff1c24f2f347dbe1", 0x4e}], 0x1, 0x48, 0x0, 0x0) pipe2(&(0x7f0000000000), 0x0) ioctl$KVM_RUN(r1, 0xae80, 0x0) 03:48:01 executing program 2: 03:48:01 executing program 3: syz_mount_image$gfs2(&(0x7f0000000140)='gfs2\x00', &(0x7f0000000200)='./file0\x00', 0xe4ffffff, 0x0, 0x0, 0x0, &(0x7f00000003c0)={[{@locktable={'locktable', 0x3d, '/'}}, {@lockproto_nolock='lockproto=lock_nolock'}]}) [ 1141.523071] gfs2: fsid=_: Trying to join cluster "lock_nolock", "_" [ 1141.555393] gfs2: fsid=_: Now mounting FS... 03:48:01 executing program 2: [ 1141.597764] gfs2: not a GFS2 filesystem 03:48:01 executing program 0: socketpair$unix(0x1, 0x1, 0x0, &(0x7f0000000440)={0xffffffffffffffff, 0xffffffffffffffff}) ioctl$PERF_EVENT_IOC_ENABLE(r0, 0x8912, 0x400200) r1 = openat$kvm(0xffffffffffffff9c, &(0x7f00000000c0)='/dev/kvm\x00', 0x0, 0x0) openat$dlm_monitor(0xffffffffffffff9c, &(0x7f0000000340)='/dev/dlm-monitor\x00', 0x0, 0x0) r2 = ioctl$KVM_CREATE_VM(r1, 0xae01, 0x0) r3 = ioctl$KVM_CREATE_VCPU(r2, 0xae41, 0x0) syz_kvm_setup_cpu$x86(r2, 0xffffffffffffffff, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x0, 0x0, 0x0) syz_init_net_socket$bt_sco(0x1f, 0x5, 0x2) syz_kvm_setup_cpu$x86(0xffffffffffffffff, r3, &(0x7f0000000000/0x18000)=nil, &(0x7f00000001c0)=[@text64={0x40, &(0x7f0000000040)="b9800000c00f3235001000000f30f24c0f2c49e8426dc4027d3493b80800003626660f7e676d660f1678b06cc403f9dfbeb70000000bc7442400f5000000c744240284d178bcff1c24f2f347dbe1", 0x4e}], 0x1, 0x48, 0x0, 0x0) pipe2(&(0x7f0000000000), 0x0) ioctl$KVM_RUN(r3, 0xae80, 0x0) [ 1141.625311] gfs2: fsid=_: can't read superblock [ 1141.646612] gfs2: fsid=_: can't read superblock: -22 [ 1141.661292] sysfs: cannot create duplicate filename '/fs/gfs2/_' [ 1141.684620] CPU: 1 PID: 22791 Comm: syz-executor3 Not tainted 4.20.0-next-20190103 #4 [ 1141.692633] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 1141.701986] Call Trace: [ 1141.704597] dump_stack+0x1db/0x2d0 [ 1141.708249] ? dump_stack_print_info.cold+0x20/0x20 [ 1141.713279] ? _raw_spin_unlock_irqrestore+0xa4/0xe0 [ 1141.718396] sysfs_warn_dup.cold+0x1c/0x31 [ 1141.722648] sysfs_create_dir_ns+0x2ce/0x330 [ 1141.727115] ? sysfs_create_mount_point+0xa0/0xa0 [ 1141.731978] ? do_raw_spin_trylock+0x270/0x270 [ 1141.736593] kobject_add_internal.cold+0x129/0x6d8 [ 1141.741558] ? kobj_ns_type_registered+0x60/0x60 [ 1141.746337] ? kfree_const+0x59/0x70 [ 1141.750086] ? rcu_read_lock_sched_held+0x110/0x130 [ 1141.755131] ? kfree+0x1fa/0x230 [ 1141.758539] ? kfree_const+0x5e/0x70 [ 1141.762269] kobject_init_and_add+0x101/0x160 [ 1141.766785] ? kobject_add_internal+0x4b0/0x4b0 [ 1141.771490] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 1141.777074] ? vsnprintf+0x368/0x1b10 [ 1141.780949] gfs2_sys_fs_add+0x210/0x500 [ 1141.785069] ? recover_store+0x1a0/0x1a0 [ 1141.789171] ? snprintf+0xbb/0xf0 [ 1141.792618] ? vsprintf+0x30/0x40 [ 1141.796124] ? set_blocksize+0x2bf/0x340 [ 1141.800239] ? memcpy+0x46/0x50 [ 1141.803546] fill_super+0x894/0x1990 [ 1141.807322] ? gfs2_online_uevent+0x2d0/0x2d0 [ 1141.811846] ? snprintf+0xbb/0xf0 [ 1141.815332] ? vsprintf+0x40/0x40 [ 1141.818804] ? ns_capable_common+0x141/0x170 [ 1141.823238] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 1141.828247] ? set_blocksize+0x2bf/0x340 [ 1141.832355] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 1141.837965] gfs2_mount+0x5db/0x6ee [ 1141.841608] ? fill_super+0x1990/0x1990 [ 1141.845671] ? vfs_parse_fs_string+0x1c5/0x2b0 [ 1141.850271] ? vfs_parse_fs_param+0x4b0/0x4b0 [ 1141.854784] ? fill_super+0x1990/0x1990 [ 1141.858756] legacy_get_tree+0xf2/0x200 [ 1141.862732] vfs_get_tree+0x123/0x450 [ 1141.866553] do_mount+0x1622/0x2fa0 [ 1141.870242] ? copy_mount_string+0x40/0x40 [ 1141.874506] ? kmem_cache_alloc_trace+0x354/0x760 [ 1141.879382] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 1141.884950] ? _copy_from_user+0xdd/0x150 [ 1141.889104] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 1141.894661] ? copy_mount_options+0x30e/0x440 [ 1141.899170] ksys_mount+0xdb/0x150 [ 1141.902777] __x64_sys_mount+0xbe/0x150 [ 1141.906798] do_syscall_64+0x1a3/0x800 [ 1141.910697] ? syscall_return_slowpath+0x5f0/0x5f0 [ 1141.915651] ? prepare_exit_to_usermode+0x232/0x3b0 [ 1141.920691] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 1141.925577] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 1141.930789] RIP: 0033:0x45a93a 03:48:01 executing program 1: r0 = openat$kvm(0xffffffffffffff9c, &(0x7f0000000140)='/dev/kvm\x00', 0x0, 0x0) r1 = ioctl$KVM_CREATE_VM(r0, 0xae01, 0x0) r2 = ioctl$KVM_CREATE_VCPU(r1, 0xae41, 0x0) ioctl$KVM_SET_USER_MEMORY_REGION(r1, 0x4020ae46, &(0x7f0000000400)={0x0, 0x3, 0x0, 0x2000, &(0x7f0000000000/0x2000)=nil}) syz_kvm_setup_cpu$x86(r1, 0xffffffffffffffff, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x0, 0x0, 0xfffffffffffffe78) sendmmsg$unix(0xffffffffffffffff, &(0x7f0000002780)=[{0x0, 0x0, &(0x7f0000001d00)=[{&(0x7f0000000bc0)="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", 0x3c5}], 0x1}], 0x1, 0x0) ioctl$KVM_REGISTER_COALESCED_MMIO(r1, 0x4010ae67, &(0x7f00000000c0)={0x0, 0x15200}) syz_kvm_setup_cpu$x86(0xffffffffffffffff, r2, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x8, 0x0, 0x0) ioctl$KVM_RUN(r2, 0xae80, 0x1e) [ 1141.934025] Code: b8 a6 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 ed 8c fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 0f 83 ca 8c fb ff c3 66 0f 1f 84 00 00 00 00 00 [ 1141.952937] RSP: 002b:00007fdbfe5d2a88 EFLAGS: 00000206 ORIG_RAX: 00000000000000a5 [ 1141.960676] RAX: ffffffffffffffda RBX: 00007fdbfe5d2b30 RCX: 000000000045a93a [ 1141.967938] RDX: 00007fdbfe5d2ad0 RSI: 0000000020000200 RDI: 00007fdbfe5d2af0 [ 1141.975240] RBP: 0000000020000200 R08: 00007fdbfe5d2b30 R09: 00007fdbfe5d2ad0 [ 1141.982567] R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000003 [ 1141.989856] R13: 0000000000000000 R14: 00000000004db380 R15: 00000000ffffffff 03:48:01 executing program 2: 03:48:01 executing program 2: [ 1142.193232] kobject_add_internal failed for _ with -EEXIST, don't try to register things with the same name in the same directory. [ 1142.228079] gfs2: fsid=_: Trying to join cluster "lock_nolock", "_" [ 1142.293346] gfs2: fsid=_: Now mounting FS... [ 1142.320222] gfs2: not a GFS2 filesystem [ 1142.334651] gfs2: fsid=_: can't read superblock [ 1142.357485] gfs2: fsid=_: can't read superblock: -22 03:48:02 executing program 5: r0 = socket$inet(0x2, 0x4000000000000001, 0x0) setsockopt$inet_tcp_int(r0, 0x6, 0x80000000000002, &(0x7f0000000040)=0x74, 0x4) bind$inet(r0, &(0x7f0000000180)={0x2, 0x4e23, @multicast1}, 0x10) sendto$inet(r0, 0x0, 0x0, 0x200007fd, &(0x7f0000e68000)={0x2, 0x4e23, @local}, 0x10) write$binfmt_elf64(r0, &(0x7f00000012c0)=ANY=[@ANYBLOB="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"], 0x209) mmap(&(0x7f0000000000/0xb36000)=nil, 0xb36000, 0x3, 0x8031, 0xffffffffffffffff, 0x0) sendmmsg$inet_sctp(r0, &(0x7f0000002600)=[{0x0, 0x0, &(0x7f0000000240)=[{&(0x7f0000000380)="d4", 0x1}], 0x1}], 0x1, 0x0) 03:48:02 executing program 4: syz_mount_image$gfs2(&(0x7f0000000140)='gfs2\x00', &(0x7f0000000200)='./file0\x00', 0x500, 0x0, 0x0, 0x0, &(0x7f00000003c0)={[{@locktable={'locktable', 0x3d, '/'}}, {@lockproto_nolock='lockproto=lock_nolock'}]}) socketpair$unix(0x1, 0x1, 0x0, &(0x7f0000000180)) 03:48:02 executing program 1: r0 = openat$kvm(0xffffffffffffff9c, &(0x7f0000000140)='/dev/kvm\x00', 0x0, 0x0) r1 = ioctl$KVM_CREATE_VM(r0, 0xae01, 0x0) r2 = ioctl$KVM_CREATE_VCPU(r1, 0xae41, 0x0) ioctl$KVM_SET_USER_MEMORY_REGION(r1, 0x4020ae46, &(0x7f0000000400)={0x0, 0x3, 0x0, 0x2000, &(0x7f0000000000/0x2000)=nil}) syz_kvm_setup_cpu$x86(r1, 0xffffffffffffffff, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x0, 0x0, 0xfffffffffffffe78) sendmmsg$unix(0xffffffffffffffff, &(0x7f0000002780)=[{0x0, 0x0, &(0x7f0000001d00)=[{&(0x7f0000000bc0)="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", 0x3c5}], 0x1}], 0x1, 0x0) ioctl$KVM_REGISTER_COALESCED_MMIO(r1, 0x4010ae67, &(0x7f00000000c0)={0x0, 0x15200}) syz_kvm_setup_cpu$x86(0xffffffffffffffff, r2, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x8, 0x0, 0x0) ioctl$KVM_RUN(r2, 0xae80, 0xb) 03:48:02 executing program 2: r0 = syz_open_pts(0xffffffffffffffff, 0x0) fcntl$lock(r0, 0x400000009, &(0x7f0000000080)={0x0, 0x0, 0x0, 0x101000000}) flock(r0, 0x2000000000000003) mknod(&(0x7f0000000000)='./file0\x00', 0x8007, 0x16eb) r1 = open(&(0x7f0000000080)='./file0\x00', 0x0, 0x0) mmap(&(0x7f0000000000/0x3000)=nil, 0x3000, 0x2, 0x10, r1, 0x0) flock(r0, 0x2) flock(r0, 0x2) flock(r0, 0x800000002) sendmsg$unix(0xffffffffffffffff, &(0x7f0000000340)={0x0, 0x0, 0x0, 0x0, &(0x7f00000000c0)=ANY=[@ANYBLOB="2000e25d5aa05c472f3ca6211795cf56731acd2a1a2953ec0c777f90c50eaaf163b015d956975f1424bd2b56b5a210279534ec0c14509a588df6ad4329ed371c5cba4a5865dbaa5282e701370d627d0892f0e91b4bb79a37ce62e9db665e84951da0a5f5e1be08c24fbfe69c73eeac4608329ce933ca93923b44abaaf9efc2db966b96378a9accfd430cbe95b695213345"], 0x91}, 0x0) 03:48:02 executing program 0: socketpair$unix(0x1, 0x1, 0x0, &(0x7f0000000440)={0xffffffffffffffff, 0xffffffffffffffff}) ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200) r2 = openat$kvm(0xffffffffffffff9c, &(0x7f00000000c0)='/dev/kvm\x00', 0x0, 0x0) r3 = openat$dlm_monitor(0xffffffffffffff9c, &(0x7f0000000340)='/dev/dlm-monitor\x00', 0x0, 0x0) r4 = ioctl$KVM_CREATE_VM(r2, 0xae01, 0x0) r5 = ioctl$KVM_CREATE_VCPU(r4, 0xae41, 0x0) syz_kvm_setup_cpu$x86(r4, 0xffffffffffffffff, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x0, 0x0, 0x0) r6 = getpgrp(0x0) ioctl$TIOCSPGRP(r3, 0x5410, &(0x7f0000000000)=r6) syz_kvm_setup_cpu$x86(0xffffffffffffffff, r5, &(0x7f0000000000/0x18000)=nil, &(0x7f00000001c0)=[@text64={0x40, &(0x7f0000000040)="b9800000c00f3235001000000f30f24c0f2c49e8426dc4027d3493b80800003626660f7e676d660f1678b06cc403f9dfbeb70000000bc7442400f5000000c744240284d178bcff1c24f2f347dbe1", 0x4e}], 0x1, 0x48, 0x0, 0x0) pipe2(&(0x7f0000000180), 0x84000) setsockopt$inet_sctp6_SCTP_DISABLE_FRAGMENTS(r0, 0x84, 0x8, &(0x7f0000000140)=0x8001, 0xfffffffffffffd77) ioctl$KVM_RUN(r5, 0xae80, 0x0) [ 1142.475885] gfs2: fsid=_: error -17 adding sysfs files 03:48:02 executing program 2: clone(0x3102001ff6, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff) clone(0x1ffc, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff) r0 = creat(&(0x7f00000001c0)='./file0\x00', 0x0) write$cgroup_type(r0, &(0x7f0000001380)='threaded\x00', 0xd4b9c80) socket$inet6(0xa, 0x0, 0x0) lsetxattr$security_evm(&(0x7f0000000080)='./file0\x00', &(0x7f0000000000)='security.evm\x00', 0x0, 0x0, 0x0) 03:48:02 executing program 3: syz_mount_image$gfs2(&(0x7f0000000140)='gfs2\x00', &(0x7f0000000200)='./file0\x00', 0x8000000, 0x0, 0x0, 0x0, &(0x7f00000003c0)={[{@locktable={'locktable', 0x3d, '/'}}, {@lockproto_nolock='lockproto=lock_nolock'}]}) [ 1142.711863] gfs2: fsid=_: Trying to join cluster "lock_nolock", "_" [ 1142.721875] gfs2: fsid=_: Now mounting FS... 03:48:02 executing program 1: r0 = openat$kvm(0xffffffffffffff9c, &(0x7f0000000140)='/dev/kvm\x00', 0x0, 0x0) r1 = openat$pfkey(0xffffffffffffff9c, &(0x7f0000000280)='/proc/self/net/pfkey\x00', 0x2000, 0x0) ioctl$CAPI_NCCI_OPENCOUNT(r1, 0x80044326, &(0x7f00000002c0)=0xffffffffffffffe1) r2 = semget$private(0x0, 0x2, 0x100) semtimedop(r2, &(0x7f0000000300)=[{0x4, 0x80, 0x1000}], 0x1, &(0x7f0000000340)) r3 = ioctl$KVM_CREATE_VM(r0, 0xae01, 0x0) r4 = ioctl$KVM_CREATE_VCPU(r3, 0xae41, 0x0) ioctl$KVM_SET_USER_MEMORY_REGION(r3, 0x4020ae46, &(0x7f0000000400)={0x0, 0x3, 0x0, 0x2000, &(0x7f0000000000/0x2000)=nil}) syz_kvm_setup_cpu$x86(r3, 0xffffffffffffffff, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x0, 0x0, 0xfffffffffffffe78) getsockopt$inet_sctp6_SCTP_DEFAULT_SEND_PARAM(r1, 0x84, 0xa, &(0x7f0000000380)={0x4, 0x6, 0x2, 0x1f, 0x2, 0x4, 0x2, 0x40, 0x0}, &(0x7f00000003c0)=0x20) setsockopt$inet_sctp6_SCTP_PRIMARY_ADDR(r1, 0x84, 0x6, &(0x7f0000000440)={r5, @in6={{0xa, 0x4e24, 0x3, @initdev={0xfe, 0x88, [], 0x1, 0x0}, 0x3}}}, 0x84) getsockopt$inet_IP_IPSEC_POLICY(0xffffffffffffff9c, 0x0, 0x10, &(0x7f0000000180)={{{@in=@empty, @in6=@mcast2, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0}}, {{@in6=@mcast1}, 0x0, @in=@loopback}}, &(0x7f0000000080)=0xe8) setxattr$security_capability(&(0x7f0000000000)='./file0\x00', &(0x7f0000000040)='security.capability\x00', &(0x7f0000000100)=@v3={0x3000000, [{0x3, 0x3f}, {0x3, 0x5}], r6}, 0x18, 0x1) sendmmsg$unix(0xffffffffffffffff, &(0x7f0000002780)=[{0x0, 0x0, &(0x7f0000001d00)=[{&(0x7f0000000bc0)="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", 0x3c5}], 0x1}], 0x1, 0x0) ioctl$KVM_REGISTER_COALESCED_MMIO(r3, 0x4010ae67, &(0x7f00000000c0)={0x0, 0x15200}) readv(r4, &(0x7f00000008c0)=[{&(0x7f0000000540)=""/218, 0xda}, {&(0x7f0000000640)=""/43, 0x2b}, {&(0x7f0000000680)=""/90, 0x5a}, {&(0x7f0000000700)=""/24, 0x18}, {&(0x7f0000000740)=""/207, 0xcf}, {&(0x7f0000000840)=""/33, 0x21}, {&(0x7f0000000880)=""/6, 0x6}], 0x7) r7 = getpgrp(0xffffffffffffffff) ioctl$KVM_ASSIGN_SET_MSIX_ENTRY(r1, 0x4010ae74, &(0x7f0000000500)={0x1, 0x6, 0x9}) sched_getscheduler(r7) r8 = pkey_alloc(0x0, 0x2) pkey_mprotect(&(0x7f0000015000/0x4000)=nil, 0x4000, 0x8, r8) syz_kvm_setup_cpu$x86(r3, r4, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x8, 0x0, 0x0) kcmp(r7, r7, 0x3, r4, r0) ioctl$KVM_RUN(r4, 0xae80, 0x0) fcntl$addseals(r1, 0x409, 0x4) getsockopt$IP_VS_SO_GET_INFO(r1, 0x0, 0x481, &(0x7f0000000940), &(0x7f0000000980)=0xc) [ 1142.756494] sysfs: cannot create duplicate filename '/fs/gfs2/_' [ 1142.769581] attempt to access beyond end of device [ 1142.805511] loop4: rw=4096, want=136, limit=2 [ 1142.820282] CPU: 0 PID: 22840 Comm: syz-executor3 Not tainted 4.20.0-next-20190103 #4 [ 1142.828267] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 1142.837617] Call Trace: [ 1142.837643] dump_stack+0x1db/0x2d0 [ 1142.837667] ? dump_stack_print_info.cold+0x20/0x20 [ 1142.837693] ? _raw_spin_unlock_irqrestore+0xa4/0xe0 [ 1142.848905] sysfs_warn_dup.cold+0x1c/0x31 [ 1142.848923] sysfs_create_dir_ns+0x2ce/0x330 [ 1142.848939] ? sysfs_create_mount_point+0xa0/0xa0 [ 1142.862683] ? do_raw_spin_trylock+0x270/0x270 [ 1142.862711] kobject_add_internal.cold+0x129/0x6d8 [ 1142.862732] ? kobj_ns_type_registered+0x60/0x60 [ 1142.862748] ? kfree_const+0x59/0x70 [ 1142.872176] ? rcu_read_lock_sched_held+0x110/0x130 [ 1142.872193] ? kfree+0x1fa/0x230 [ 1142.872210] ? kfree_const+0x5e/0x70 [ 1142.872231] kobject_init_and_add+0x101/0x160 [ 1142.902189] ? kobject_add_internal+0x4b0/0x4b0 [ 1142.906865] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 1142.912400] ? vsnprintf+0x368/0x1b10 [ 1142.916222] gfs2_sys_fs_add+0x210/0x500 [ 1142.920285] ? recover_store+0x1a0/0x1a0 [ 1142.924354] ? snprintf+0xbb/0xf0 [ 1142.927819] ? vsprintf+0x30/0x40 [ 1142.931274] ? set_blocksize+0x2bf/0x340 [ 1142.935340] ? memcpy+0x46/0x50 [ 1142.938623] fill_super+0x894/0x1990 [ 1142.942354] ? gfs2_online_uevent+0x2d0/0x2d0 [ 1142.946860] ? snprintf+0xbb/0xf0 [ 1142.950316] ? vsprintf+0x40/0x40 [ 1142.953802] ? ns_capable_common+0x141/0x170 [ 1142.958210] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 1142.963224] ? set_blocksize+0x2bf/0x340 [ 1142.967303] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 1142.972848] gfs2_mount+0x5db/0x6ee [ 1142.976478] ? fill_super+0x1990/0x1990 [ 1142.980492] ? vfs_parse_fs_string+0x1c5/0x2b0 [ 1142.985085] ? vfs_parse_fs_param+0x4b0/0x4b0 [ 1142.989583] ? fill_super+0x1990/0x1990 [ 1142.993573] legacy_get_tree+0xf2/0x200 [ 1142.997597] vfs_get_tree+0x123/0x450 [ 1143.001404] do_mount+0x1622/0x2fa0 [ 1143.005064] ? copy_mount_string+0x40/0x40 [ 1143.009303] ? kmem_cache_alloc_trace+0x354/0x760 [ 1143.014154] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 1143.019685] ? copy_mount_options+0x30e/0x440 [ 1143.024193] ksys_mount+0xdb/0x150 [ 1143.027732] __x64_sys_mount+0xbe/0x150 [ 1143.031706] do_syscall_64+0x1a3/0x800 [ 1143.035591] ? syscall_return_slowpath+0x5f0/0x5f0 [ 1143.040573] ? prepare_exit_to_usermode+0x232/0x3b0 [ 1143.045615] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 1143.050481] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 1143.055659] RIP: 0033:0x45a93a [ 1143.058857] Code: b8 a6 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 ed 8c fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 0f 83 ca 8c fb ff c3 66 0f 1f 84 00 00 00 00 00 [ 1143.077748] RSP: 002b:00007fdbfe5d2a88 EFLAGS: 00000206 ORIG_RAX: 00000000000000a5 [ 1143.085444] RAX: ffffffffffffffda RBX: 00007fdbfe5d2b30 RCX: 000000000045a93a [ 1143.092711] RDX: 00007fdbfe5d2ad0 RSI: 0000000020000200 RDI: 00007fdbfe5d2af0 [ 1143.099973] RBP: 0000000020000200 R08: 00007fdbfe5d2b30 R09: 00007fdbfe5d2ad0 [ 1143.107236] R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000003 [ 1143.114494] R13: 0000000000000000 R14: 00000000004db380 R15: 00000000ffffffff [ 1143.132832] gfs2: error 10 reading superblock [ 1143.140293] gfs2: fsid=_: can't read superblock [ 1143.145398] gfs2: fsid=_: can't read superblock: -5 03:48:03 executing program 1: r0 = openat$kvm(0xffffffffffffff9c, &(0x7f0000000140)='/dev/kvm\x00', 0x0, 0x0) r1 = ioctl$KVM_CREATE_VM(r0, 0xae01, 0x0) r2 = ioctl$KVM_CREATE_VCPU(r1, 0xae41, 0x0) ioctl$KVM_SET_USER_MEMORY_REGION(r1, 0x4020ae46, &(0x7f0000000400)={0x0, 0x3, 0x0, 0x2000, &(0x7f0000000000/0x2000)=nil}) syz_kvm_setup_cpu$x86(r1, 0xffffffffffffffff, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x0, 0x0, 0xfffffffffffffe78) r3 = syz_open_dev$sndpcmp(&(0x7f0000000000)='/dev/snd/pcmC#D#p\x00', 0x8, 0x0) getsockopt$bt_sco_SCO_OPTIONS(r3, 0x11, 0x1, &(0x7f0000000180)=""/189, &(0x7f0000000040)=0xbd) sendmmsg$unix(0xffffffffffffffff, &(0x7f0000002780)=[{0x0, 0x0, &(0x7f0000001d00)=[{&(0x7f0000000bc0)="b474ac0450ac6a2ff5ba4c1a19990e818d6fb646a5739e09c636550fdd39d0316e215a5a9427ac426da0b375844fb7f5ee5130d0b57cdab9af6f5f0d39c1787ec9ecde6263664c6a9859b7a0c4cbc99a05184da950f370cf65a18bff7975c0c12ca4227baa2164d031a5472d7f581c6f7eedd103d8fc89b6b4b52e5d3da0817eec8c57f722e356068b99a056ab6a693b9eebe38d75170491e07f9f69573b02b1a048f29e39cd24fed99e8606ffcbe4f617f48370ec62bd327cdfb9da8e8fef232b2e8f8f6868bb1781eab4c294befd65d9a336123bd34be8f256b5fc0420aa6e930f292a9a06365daaebd0bcaaaf5e0c12167aad0c62a48666383ee58b37df8077c5d2d5298d5247e240a78ff2543147129775f6d4a872df80d9da66c2a0a169df65141cbe88b1e280d60f6e11b25a0b5bb1bdd430378761d547f3ff7e42cc84c849e66004e30905d908e352a53f95bca84a68a6ce5ee82b69c939a196a7060bee28d8dee1ed52ae04b228bedf9302df44cc957780e42c2784d18e3695ee5e73dbe385331494af3cbcf8952e85469e9566c32692c0ceae8dab7b9553b5e8aa66edbad2ed828ba2a665a48a2822d9dc538863aea705c926c5a12fee84db545a36a13281e09e82c06211cc195cb4409bedfb7cf22f6c01fba9720bc4f447da73bb95bab6c056ce51bbc9d5b6622c54152e853f9639d2db2a5992e0f0e8f77a2e5efcfd139869cbdc902622399035d6ab8c22e33605be6850356be97ac05588720e1e215fbf5cb6633f0894e0a4dbd28708cac77792a31b00f47d18cebcb9114f1b0ffd66b587c5f9ba086fc530c6a0ac561068de208f18a3b6adc47f04bd63bd4a31544eb953398ddee5b5e4533aa529947aa46e7e517ff719e559c106f8afc570019f272a9f2d2699c7384612854de44dc40bb33aafee4e5fab1c06ceeffec56782452589f80c3946e6631c591e7f82af7e3a6422e0f35b0847f0a3049ee29b09f8aadf59c96a99576be85d6ddcf8c4d82373355add27397517402a56fd36bf877a53731413c30786431262705fb01511a778482cd85b60323b683e0e9d2f06b57678ddcf06f6da03f818e7f0b4db7045527f6e00fa26fe586fe0fcc72024fad6bab1739f6d7980d21f1fac0e7f53ee4cb254349b93a89f5695be91e5c586411b18f3f11298d979abdf4dd4796b181e623189aa73182c4c5ff346545168a520241ce23e08ade26085f654537258efaacfe1a64b2261c5180eb7c01ca6f4dc0f08f98ec12c06036278eff4c8d3b852bb2022be745861268ffbe0bb37c45452d2ac97aa6cb81db9f428688e6eab0e85ba6eb2eaecf4e8e137a2101f04b201258a71d857194610", 0x3c5}], 0x1}], 0x1, 0x0) ioctl$KVM_REGISTER_COALESCED_MMIO(r1, 0x4010ae67, &(0x7f00000000c0)={0x0, 0x15200}) syz_kvm_setup_cpu$x86(0xffffffffffffffff, r2, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x8, 0x0, 0x0) ioctl$KVM_RUN(r2, 0xae80, 0x0) 03:48:03 executing program 0: socketpair$unix(0x1, 0x1, 0x0, &(0x7f0000000440)={0xffffffffffffffff, 0xffffffffffffffff}) ioctl$PERF_EVENT_IOC_ENABLE(r0, 0x8912, 0x400200) utime(&(0x7f0000000140)='./file0\x00', &(0x7f0000000180)={0xffffffffffffb992, 0x7fff}) r1 = openat$kvm(0xffffffffffffff9c, &(0x7f00000000c0)='/dev/kvm\x00', 0x0, 0x0) r2 = openat$dlm_monitor(0xffffffffffffff9c, &(0x7f0000000340)='/dev/dlm-monitor\x00', 0x0, 0x0) ioctl$KVM_SET_SIGNAL_MASK(r2, 0x4004ae8b, &(0x7f0000000480)={0x1000, "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"}) r3 = ioctl$KVM_CREATE_VM(r1, 0xae01, 0x0) r4 = ioctl$KVM_CREATE_VCPU(r3, 0xae41, 0x0) ioctl$KVM_IRQFD(r3, 0x4020ae76, &(0x7f0000000100)={r2, 0x3, 0x8, r2}) syz_kvm_setup_cpu$x86(r3, 0xffffffffffffffff, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x0, 0x0, 0x0) syz_kvm_setup_cpu$x86(0xffffffffffffffff, r4, &(0x7f0000000000/0x18000)=nil, &(0x7f00000001c0)=[@text64={0x40, &(0x7f0000000040)="b9800000c00f3235001000000f30f24c0f2c49e8426dc4027d3493b80800003626660f7e676d660f1678b06cc403f9dfbeb70000000bc7442400f5000000c744240284d178bcff1c24f2f347dbe1", 0x4e}], 0x1, 0x48, 0x0, 0x0) pipe2(&(0x7f0000000000)={0xffffffffffffffff, 0xffffffffffffffff}, 0x0) splice(r3, &(0x7f0000000200), r0, &(0x7f0000000240), 0x6, 0x4) ioctl$KVM_RUN(r4, 0xae80, 0x0) ioctl$KVM_GET_LAPIC(r5, 0x8400ae8e, &(0x7f00000014c0)={"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"}) [ 1143.286978] kobject_add_internal failed for _ with -EEXIST, don't try to register things with the same name in the same directory. [ 1143.313006] gfs2: fsid=_: error -17 adding sysfs files [ 1143.433773] gfs2: fsid=_: Trying to join cluster "lock_nolock", "_" 03:48:03 executing program 4: syz_mount_image$gfs2(&(0x7f0000000140)='gfs2\x00', &(0x7f0000000200)='./file0\x00', 0x60, 0x0, 0x0, 0x0, &(0x7f00000003c0)={[{@locktable={'locktable', 0x3d, '/'}}, {@lockproto_nolock='lockproto=lock_nolock'}]}) socketpair$unix(0x1, 0x1, 0x0, &(0x7f0000000180)) [ 1143.499299] gfs2: fsid=_: Now mounting FS... [ 1143.524758] gfs2: not a GFS2 filesystem [ 1143.539990] gfs2: fsid=_: can't read superblock 03:48:03 executing program 2: socketpair$unix(0x1, 0x1, 0x0, &(0x7f0000000100)={0xffffffffffffffff, 0xffffffffffffffff}) ioctl$PERF_EVENT_IOC_ENABLE(r0, 0x8912, 0x400200) syz_mount_image$jfs(&(0x7f0000000000)='jfs\x00', &(0x7f00000000c0)='./file0\x00', 0x0, 0x0, 0x0, 0x0, 0x0) [ 1143.570169] gfs2: fsid=_: can't read superblock: -22 [ 1143.632091] sysfs: cannot create duplicate filename '/fs/gfs2/_' [ 1143.652750] CPU: 1 PID: 22873 Comm: syz-executor4 Not tainted 4.20.0-next-20190103 #4 [ 1143.660738] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 1143.670106] Call Trace: [ 1143.672716] dump_stack+0x1db/0x2d0 [ 1143.676360] ? dump_stack_print_info.cold+0x20/0x20 [ 1143.681396] ? _raw_spin_unlock_irqrestore+0xa4/0xe0 [ 1143.686513] sysfs_warn_dup.cold+0x1c/0x31 [ 1143.690756] sysfs_create_dir_ns+0x2ce/0x330 [ 1143.695168] ? sysfs_create_mount_point+0xa0/0xa0 [ 1143.700002] ? do_raw_spin_trylock+0x270/0x270 [ 1143.704586] kobject_add_internal.cold+0x129/0x6d8 [ 1143.709512] ? kobj_ns_type_registered+0x60/0x60 [ 1143.714270] ? kfree_const+0x59/0x70 [ 1143.717977] ? rcu_read_lock_sched_held+0x110/0x130 [ 1143.722998] ? kfree+0x1fa/0x230 [ 1143.726361] ? kfree_const+0x5e/0x70 [ 1143.730077] kobject_init_and_add+0x101/0x160 [ 1143.734574] ? kobject_add_internal+0x4b0/0x4b0 [ 1143.739257] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 1143.744793] ? vsnprintf+0x368/0x1b10 [ 1143.748601] gfs2_sys_fs_add+0x210/0x500 [ 1143.752671] ? recover_store+0x1a0/0x1a0 [ 1143.756731] ? snprintf+0xbb/0xf0 [ 1143.760176] ? vsprintf+0x30/0x40 [ 1143.763624] ? set_blocksize+0x2bf/0x340 [ 1143.767679] ? memcpy+0x46/0x50 [ 1143.770953] fill_super+0x894/0x1990 [ 1143.774671] ? gfs2_online_uevent+0x2d0/0x2d0 [ 1143.779165] ? snprintf+0xbb/0xf0 [ 1143.782616] ? vsprintf+0x40/0x40 [ 1143.786081] ? ns_capable_common+0x141/0x170 [ 1143.790485] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 1143.795508] ? set_blocksize+0x2bf/0x340 [ 1143.799583] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 1143.805121] gfs2_mount+0x5db/0x6ee [ 1143.808747] ? fill_super+0x1990/0x1990 [ 1143.812759] ? vfs_parse_fs_string+0x1c5/0x2b0 [ 1143.817339] ? vfs_parse_fs_param+0x4b0/0x4b0 [ 1143.821836] ? fill_super+0x1990/0x1990 [ 1143.825806] legacy_get_tree+0xf2/0x200 [ 1143.829788] vfs_get_tree+0x123/0x450 [ 1143.833603] do_mount+0x1622/0x2fa0 [ 1143.837231] ? copy_mount_string+0x40/0x40 [ 1143.841462] ? kmem_cache_alloc_trace+0x354/0x760 [ 1143.846316] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 1143.851850] ? _copy_from_user+0xdd/0x150 [ 1143.855994] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 1143.861524] ? copy_mount_options+0x30e/0x440 [ 1143.866021] ksys_mount+0xdb/0x150 [ 1143.869573] __x64_sys_mount+0xbe/0x150 [ 1143.873573] do_syscall_64+0x1a3/0x800 [ 1143.877472] ? syscall_return_slowpath+0x5f0/0x5f0 [ 1143.882442] ? prepare_exit_to_usermode+0x232/0x3b0 [ 1143.887463] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 1143.892310] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 1143.897492] RIP: 0033:0x45a93a [ 1143.900681] Code: b8 a6 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 ed 8c fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 0f 83 ca 8c fb ff c3 66 0f 1f 84 00 00 00 00 00 [ 1143.919576] RSP: 002b:00007ff699fe9a88 EFLAGS: 00000206 ORIG_RAX: 00000000000000a5 [ 1143.927305] RAX: ffffffffffffffda RBX: 00007ff699fe9b30 RCX: 000000000045a93a [ 1143.934578] RDX: 00007ff699fe9ad0 RSI: 0000000020000200 RDI: 00007ff699fe9af0 [ 1143.941845] RBP: 0000000020000200 R08: 00007ff699fe9b30 R09: 00007ff699fe9ad0 [ 1143.949106] R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000003 [ 1143.956378] R13: 0000000000000000 R14: 00000000004db380 R15: 00000000ffffffff [ 1144.084393] kobject_add_internal failed for _ with -EEXIST, don't try to register things with the same name in the same directory. 03:48:03 executing program 1: r0 = openat$kvm(0xffffffffffffff9c, &(0x7f0000000140)='/dev/kvm\x00', 0x0, 0x0) r1 = ioctl$KVM_CREATE_VM(r0, 0xae01, 0x0) r2 = ioctl$KVM_CREATE_VCPU(r1, 0xae41, 0x0) ioctl$sock_FIOGETOWN(0xffffffffffffffff, 0x8903, &(0x7f0000000000)=0x0) ptrace$setsig(0x4203, r3, 0x7, &(0x7f0000000040)={0x38, 0x5, 0x1004000000000}) ioctl$KVM_SET_USER_MEMORY_REGION(r1, 0x4020ae46, &(0x7f0000000400)={0x0, 0x3, 0x0, 0x2000, &(0x7f0000000000/0x2000)=nil}) syz_kvm_setup_cpu$x86(r1, 0xffffffffffffffff, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x0, 0x0, 0xfffffffffffffe78) sendmmsg$unix(0xffffffffffffffff, &(0x7f0000002780)=[{0x0, 0x0, &(0x7f0000001d00)=[{&(0x7f0000000bc0)="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", 0x3c5}], 0x1}], 0x1, 0x0) ioctl$KVM_REGISTER_COALESCED_MMIO(r1, 0x4010ae67, &(0x7f00000000c0)={0x0, 0x15200}) syz_kvm_setup_cpu$x86(0xffffffffffffffff, r2, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x8, 0x0, 0x0) fadvise64(r0, 0x0, 0x800, 0x4) ioctl$KVM_RUN(r2, 0xae80, 0x0) r4 = syz_open_dev$dspn(&(0x7f0000000100)='/dev/dsp#\x00', 0xe34, 0x400000) ioctl$UI_SET_FFBIT(r4, 0x4004556b, 0x34) 03:48:03 executing program 3: syz_mount_image$gfs2(&(0x7f0000000140)='gfs2\x00', &(0x7f0000000200)='./file0\x00', 0x4000000, 0x0, 0x0, 0x0, &(0x7f00000003c0)={[{@locktable={'locktable', 0x3d, '/'}}, {@lockproto_nolock='lockproto=lock_nolock'}]}) 03:48:03 executing program 5: perf_event_open(&(0x7f0000000000)={0x2, 0x70, 0x800000000000012, 0x1, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0xffffffffffffffff, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, @perf_bp={0x0}}, 0x0, 0x0, 0xffffffffffffffff, 0x0) r0 = socket$inet6(0xa, 0x2, 0x0) setsockopt$inet6_IPV6_XFRM_POLICY(r0, 0x29, 0x23, &(0x7f0000000200)={{{@in6=@loopback, @in=@loopback, 0x0, 0x0, 0x0, 0x0, 0x2}, {}, {}, 0x0, 0x0, 0x1}, {{@in6=@local, 0x0, 0xff}, 0x0, @in6, 0x0, 0x1}}, 0xe8) sendmmsg(r0, &(0x7f0000000a80)=[{{&(0x7f0000000100)=@in={0x2, 0xc67a}, 0x80, 0x0}}], 0x1, 0x0) [ 1144.129897] gfs2: fsid=_: error -17 adding sysfs files [ 1144.273712] gfs2: fsid=_: Trying to join cluster "lock_nolock", "_" [ 1144.295658] sysfs: cannot create duplicate filename '/fs/gfs2/_' [ 1144.301827] CPU: 0 PID: 22901 Comm: syz-executor3 Not tainted 4.20.0-next-20190103 #4 [ 1144.303232] gfs2: fsid=_: Now mounting FS... [ 1144.309798] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 1144.309805] Call Trace: [ 1144.309828] dump_stack+0x1db/0x2d0 [ 1144.309850] ? dump_stack_print_info.cold+0x20/0x20 [ 1144.309874] ? _raw_spin_unlock_irqrestore+0xa4/0xe0 [ 1144.339929] sysfs_warn_dup.cold+0x1c/0x31 [ 1144.344198] sysfs_create_dir_ns+0x2ce/0x330 [ 1144.348613] ? sysfs_create_mount_point+0xa0/0xa0 [ 1144.353463] ? do_raw_spin_trylock+0x270/0x270 [ 1144.358079] kobject_add_internal.cold+0x129/0x6d8 [ 1144.363025] ? kobj_ns_type_registered+0x60/0x60 [ 1144.367795] ? kfree_const+0x59/0x70 [ 1144.371528] ? rcu_read_lock_sched_held+0x110/0x130 [ 1144.376549] ? kfree+0x1fa/0x230 [ 1144.379923] ? kfree_const+0x5e/0x70 [ 1144.383651] kobject_init_and_add+0x101/0x160 [ 1144.388151] ? kobject_add_internal+0x4b0/0x4b0 [ 1144.388171] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 1144.388186] ? vsnprintf+0x368/0x1b10 [ 1144.402166] gfs2_sys_fs_add+0x210/0x500 [ 1144.406231] ? recover_store+0x1a0/0x1a0 [ 1144.410309] ? snprintf+0xbb/0xf0 [ 1144.410342] ? vsprintf+0x30/0x40 [ 1144.410374] ? set_blocksize+0x2bf/0x340 [ 1144.410393] ? memcpy+0x46/0x50 [ 1144.424874] fill_super+0x894/0x1990 [ 1144.428605] ? gfs2_online_uevent+0x2d0/0x2d0 [ 1144.428627] ? snprintf+0xbb/0xf0 [ 1144.428640] ? vsprintf+0x40/0x40 [ 1144.428659] ? ns_capable_common+0x141/0x170 [ 1144.428679] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 1144.436606] ? set_blocksize+0x2bf/0x340 [ 1144.436624] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 1144.436641] gfs2_mount+0x5db/0x6ee [ 1144.436658] ? fill_super+0x1990/0x1990 [ 1144.436696] ? vfs_parse_fs_string+0x1c5/0x2b0 [ 1144.444523] ? vfs_parse_fs_param+0x4b0/0x4b0 [ 1144.444540] ? fill_super+0x1990/0x1990 [ 1144.444555] legacy_get_tree+0xf2/0x200 [ 1144.444576] vfs_get_tree+0x123/0x450 [ 1144.449853] sysfs: cannot create duplicate filename '/fs/gfs2/_' [ 1144.453665] do_mount+0x1622/0x2fa0 [ 1144.453702] ? copy_mount_string+0x40/0x40 [ 1144.453720] ? kmem_cache_alloc_trace+0x354/0x760 [ 1144.453743] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 1144.453756] ? copy_mount_options+0x30e/0x440 [ 1144.453775] ksys_mount+0xdb/0x150 [ 1144.519960] __x64_sys_mount+0xbe/0x150 [ 1144.523940] do_syscall_64+0x1a3/0x800 [ 1144.528106] ? syscall_return_slowpath+0x5f0/0x5f0 [ 1144.533046] ? prepare_exit_to_usermode+0x232/0x3b0 [ 1144.538095] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 1144.542952] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 1144.548161] RIP: 0033:0x45a93a [ 1144.551359] Code: b8 a6 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 ed 8c fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 0f 83 ca 8c fb ff c3 66 0f 1f 84 00 00 00 00 00 [ 1144.570264] RSP: 002b:00007fdbfe5d2a88 EFLAGS: 00000206 ORIG_RAX: 00000000000000a5 [ 1144.577984] RAX: ffffffffffffffda RBX: 00007fdbfe5d2b30 RCX: 000000000045a93a [ 1144.585249] RDX: 00007fdbfe5d2ad0 RSI: 0000000020000200 RDI: 00007fdbfe5d2af0 [ 1144.592514] RBP: 0000000020000200 R08: 00007fdbfe5d2b30 R09: 00007fdbfe5d2ad0 [ 1144.599778] R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000003 [ 1144.607044] R13: 0000000000000000 R14: 00000000004db380 R15: 00000000ffffffff [ 1144.614383] CPU: 1 PID: 22908 Comm: syz-executor2 Not tainted 4.20.0-next-20190103 #4 03:48:04 executing program 2: r0 = socket$inet_udplite(0x2, 0x2, 0x88) ioctl(r0, 0x1000008912, &(0x7f0000000140)="0adc1f023c123f3188a070") r1 = bpf$PROG_LOAD(0x5, &(0x7f0000000200)={0x4, 0xe, &(0x7f0000000480)=ANY=[@ANYBLOB="b7020000ff000000bfa30000000000000703000000feffff7a0af0fffcffffff79a4f0ff00000000b7060000ffffffff2d6405000000000065040400010000000404000001000000b70300000000001f6a0a00fe000000008500000026000000b7000000708900009500000000000000"], 0x0}, 0x48) bpf$BPF_PROG_TEST_RUN(0xa, &(0x7f0000000780)={r1, 0x0, 0xe, 0x0, &(0x7f0000000000)="161e204adea02201c58aede536d5", 0x0, 0x8000000000004000}, 0x28) 03:48:04 executing program 2: syz_mount_image$gfs2(&(0x7f0000000140)='gfs2\x00', &(0x7f0000000200)='./file0\x00', 0x170f, 0x0, 0x0, 0x0, &(0x7f00000003c0)={[{@locktable={'locktable', 0x3d, '/'}}, {@lockproto_nolock='lockproto=lock_nolock'}]}) [ 1144.622354] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 1144.622362] Call Trace: [ 1144.634288] dump_stack+0x1db/0x2d0 [ 1144.637926] ? dump_stack_print_info.cold+0x20/0x20 [ 1144.642963] ? _raw_spin_unlock_irqrestore+0xa4/0xe0 [ 1144.648089] sysfs_warn_dup.cold+0x1c/0x31 [ 1144.652333] sysfs_create_dir_ns+0x2ce/0x330 [ 1144.656776] ? sysfs_create_mount_point+0xa0/0xa0 [ 1144.661626] ? do_raw_spin_trylock+0x270/0x270 [ 1144.666252] kobject_add_internal.cold+0x129/0x6d8 [ 1144.666273] ? kobj_ns_type_registered+0x60/0x60 [ 1144.666286] ? kfree_const+0x59/0x70 [ 1144.666303] ? rcu_read_lock_sched_held+0x110/0x130 [ 1144.675966] ? kfree+0x1fa/0x230 [ 1144.675983] ? kfree_const+0x5e/0x70 [ 1144.676001] kobject_init_and_add+0x101/0x160 [ 1144.676030] ? kobject_add_internal+0x4b0/0x4b0 [ 1144.676070] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 1144.676085] ? vsnprintf+0x368/0x1b10 [ 1144.710333] gfs2_sys_fs_add+0x210/0x500 [ 1144.714405] ? recover_store+0x1a0/0x1a0 [ 1144.718491] ? snprintf+0xbb/0xf0 [ 1144.721951] ? vsprintf+0x30/0x40 03:48:04 executing program 0: socketpair$unix(0x1, 0x1, 0x0, &(0x7f0000000440)={0xffffffffffffffff, 0xffffffffffffffff}) r1 = syz_open_dev$amidi(&(0x7f0000000100)='/dev/amidi#\x00', 0xe3e, 0x40100) getsockopt$inet_sctp_SCTP_RECONFIG_SUPPORTED(0xffffffffffffffff, 0x84, 0x75, &(0x7f0000000200)={0x0, 0x5}, &(0x7f0000000240)=0x8) getsockopt$inet_sctp_SCTP_GET_LOCAL_ADDRS(r1, 0x84, 0x6d, &(0x7f0000000280)={r2, 0x75, "681533c6f8bdab04566924f1bb9e774997c90f98f00068adcc1efff721d1027cd0c81a2e5e96c6b7e3d185e873e497d4b56ff18880f901ec6c321905467dbcaaf45ce1a3b798439f2d59b6d66763cf9626ac76cb8d689796787f9a302cf1724b5e72a8d8f1e14550d39fc9e6d48af3defcb7262370"}, &(0x7f0000000300)=0x7d) ioctl$PERF_EVENT_IOC_ENABLE(r0, 0x8912, 0x400200) r3 = openat$kvm(0xffffffffffffff9c, &(0x7f00000000c0)='/dev/kvm\x00', 0x0, 0x0) openat$dlm_monitor(0xffffffffffffff9c, &(0x7f0000000340)='/dev/dlm-monitor\x00', 0x0, 0x0) r4 = ioctl$KVM_CREATE_VM(r3, 0xae01, 0x0) r5 = ioctl$KVM_CREATE_VCPU(r4, 0xae41, 0x0) syz_kvm_setup_cpu$x86(r4, 0xffffffffffffffff, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x0, 0x0, 0x0) syz_kvm_setup_cpu$x86(0xffffffffffffffff, r5, &(0x7f0000000000/0x18000)=nil, &(0x7f00000001c0)=[@text64={0x40, &(0x7f0000000040)="b9800000c00f3235001000000f30f24c0f2c49e8426dc4027d3493b80800003626660f7e676d660f1678b06cc403f9dfbeb70000000bc7442400f5000000c744240284d178bcff1c24f2f347dbe1", 0x4e}], 0x1, 0x48, 0x0, 0x0) pipe2(&(0x7f0000000000), 0x0) ioctl$KVM_RUN(r5, 0xae80, 0x0) [ 1144.725409] ? set_blocksize+0x2bf/0x340 [ 1144.728859] kobject_add_internal failed for _ with -EEXIST, don't try to register things with the same name in the same directory. [ 1144.729472] ? memcpy+0x46/0x50 [ 1144.741482] gfs2: fsid=_: error -17 adding sysfs files [ 1144.744619] fill_super+0x894/0x1990 [ 1144.744645] ? gfs2_online_uevent+0x2d0/0x2d0 [ 1144.744665] ? snprintf+0xbb/0xf0 [ 1144.744676] ? vsprintf+0x40/0x40 [ 1144.744693] ? ns_capable_common+0x141/0x170 [ 1144.744706] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 1144.744729] ? set_blocksize+0x2bf/0x340 [ 1144.744744] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 1144.744760] gfs2_mount+0x5db/0x6ee [ 1144.744775] ? fill_super+0x1990/0x1990 [ 1144.752868] gfs2: not a GFS2 filesystem [ 1144.753770] ? vfs_parse_fs_string+0x1c5/0x2b0 [ 1144.758220] gfs2: fsid=_: can't read superblock [ 1144.761668] ? vfs_parse_fs_param+0x4b0/0x4b0 [ 1144.785752] gfs2: fsid=_: can't read superblock: -22 [ 1144.787712] ? fill_super+0x1990/0x1990 [ 1144.787728] legacy_get_tree+0xf2/0x200 [ 1144.787760] vfs_get_tree+0x123/0x450 [ 1144.826159] do_mount+0x1622/0x2fa0 [ 1144.829799] ? copy_mount_string+0x40/0x40 [ 1144.834085] ? kmem_cache_alloc_trace+0x354/0x760 [ 1144.838946] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 1144.838962] ? _copy_from_user+0xdd/0x150 [ 1144.838984] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 1144.848651] ? copy_mount_options+0x30e/0x440 [ 1144.848671] ksys_mount+0xdb/0x150 [ 1144.848689] __x64_sys_mount+0xbe/0x150 [ 1144.858698] do_syscall_64+0x1a3/0x800 [ 1144.858715] ? syscall_return_slowpath+0x5f0/0x5f0 03:48:04 executing program 5: syz_mount_image$gfs2(&(0x7f0000000140)='gfs2\x00', &(0x7f0000000200)='./file0\x00', 0xed25010000000000, 0x0, 0x0, 0x0, &(0x7f00000003c0)={[{@locktable={'locktable', 0x3d, '/'}}, {@lockproto_nolock='lockproto=lock_nolock'}]}) socketpair$unix(0x1, 0x1, 0x0, &(0x7f0000000180)) [ 1144.858731] ? prepare_exit_to_usermode+0x232/0x3b0 [ 1144.866244] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 1144.866269] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 1144.866281] RIP: 0033:0x45a93a [ 1144.866296] Code: b8 a6 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 ed 8c fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 0f 83 ca 8c fb ff c3 66 0f 1f 84 00 00 00 00 00 [ 1144.866303] RSP: 002b:00007f0afecf4a88 EFLAGS: 00000206 ORIG_RAX: 00000000000000a5 [ 1144.875155] RAX: ffffffffffffffda RBX: 00007f0afecf4b30 RCX: 000000000045a93a [ 1144.875164] RDX: 00007f0afecf4ad0 RSI: 0000000020000200 RDI: 00007f0afecf4af0 [ 1144.875172] RBP: 0000000020000200 R08: 00007f0afecf4b30 R09: 00007f0afecf4ad0 [ 1144.875180] R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000003 [ 1144.875188] R13: 0000000000000000 R14: 00000000004db380 R15: 00000000ffffffff [ 1144.887311] kobject_add_internal failed for _ with -EEXIST, don't try to register things with the same name in the same directory. [ 1144.913511] gfs2: fsid=_: error -17 adding sysfs files [ 1145.021423] gfs2: fsid=_: Trying to join cluster "lock_nolock", "_" [ 1145.034886] gfs2: fsid=_: Now mounting FS... [ 1145.052263] gfs2: not a GFS2 filesystem 03:48:04 executing program 2: syz_mount_image$gfs2(&(0x7f0000000140)='gfs2\x00', &(0x7f0000000200)='./file0\x00', 0x48, 0x0, 0x0, 0x0, &(0x7f00000003c0)={[{@locktable={'locktable', 0x3d, '/'}}, {@lockproto_nolock='lockproto=lock_nolock'}]}) socketpair$unix(0x1, 0x1, 0x0, &(0x7f0000000180)) 03:48:04 executing program 4: syz_mount_image$gfs2(&(0x7f0000000140)='gfs2\x00', &(0x7f0000000200)='./file0\x00', 0x125e0, 0x0, 0x0, 0x0, &(0x7f00000003c0)={[{@locktable={'locktable', 0x3d, '/'}}, {@lockproto_nolock='lockproto=lock_nolock'}]}) socketpair$unix(0x1, 0x1, 0x0, &(0x7f0000000180)) [ 1145.076561] gfs2: fsid=_: can't read superblock [ 1145.082166] gfs2: fsid=_: can't read superblock: -22 03:48:04 executing program 1: r0 = openat$kvm(0xffffffffffffff9c, &(0x7f0000000140)='/dev/kvm\x00', 0x0, 0x0) r1 = ioctl$KVM_CREATE_VM(r0, 0xae01, 0x0) r2 = ioctl$KVM_CREATE_VCPU(r1, 0xae41, 0x0) ioctl$KVM_SET_USER_MEMORY_REGION(r1, 0x4020ae46, &(0x7f0000000400)={0x0, 0x3, 0x0, 0x2000, &(0x7f0000000000/0x2000)=nil}) r3 = accept4$netrom(r1, &(0x7f0000000040)={{0x3, @null}, [@remote, @netrom, @remote, @null, @remote, @rose, @bcast, @netrom]}, &(0x7f0000000100)=0x48, 0x800) getsockopt$netrom_NETROM_T4(r3, 0x103, 0x6, &(0x7f0000000180)=0x80, &(0x7f00000001c0)=0x4) syz_kvm_setup_cpu$x86(r1, 0xffffffffffffffff, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x0, 0x0, 0xfffffffffffffe78) sendmmsg$unix(0xffffffffffffffff, &(0x7f0000002780)=[{0x0, 0x0, &(0x7f0000001d00)=[{&(0x7f0000000bc0)="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", 0x3c5}], 0x1}], 0x1, 0x0) ioctl$KVM_REGISTER_COALESCED_MMIO(r1, 0x4010ae67, &(0x7f00000000c0)={0x0, 0x15200}) syz_kvm_setup_cpu$x86(0xffffffffffffffff, r2, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x8, 0x0, 0x0) r4 = openat$proc_capi20ncci(0xffffffffffffff9c, &(0x7f0000000200)='/proc/capi/capi20ncci\x00', 0x400000, 0x0) ioctl$EVIOCGABS20(r4, 0x80184560, &(0x7f0000000240)=""/153) socketpair(0x2, 0x8000a, 0x4, &(0x7f0000000000)) ioctl$KVM_RUN(r2, 0xae80, 0x0) 03:48:04 executing program 0: socketpair$unix(0x1, 0x1, 0x0, &(0x7f0000000440)={0xffffffffffffffff, 0xffffffffffffffff}) ioctl$PERF_EVENT_IOC_ENABLE(r0, 0x8912, 0x400200) r1 = openat$kvm(0xffffffffffffff9c, &(0x7f00000000c0)='/dev/kvm\x00', 0x0, 0x0) r2 = openat$dlm_monitor(0xffffffffffffff9c, &(0x7f0000000340)='/dev/dlm-monitor\x00', 0x0, 0x0) ioctl$KVM_CREATE_VM(r2, 0xae01, 0x0) r3 = ioctl$KVM_CREATE_VM(r1, 0xae01, 0x0) r4 = ioctl$KVM_CREATE_VCPU(r3, 0xae41, 0x0) syz_kvm_setup_cpu$x86(r3, 0xffffffffffffffff, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x0, 0x0, 0x0) syz_kvm_setup_cpu$x86(0xffffffffffffffff, r4, &(0x7f0000000000/0x18000)=nil, &(0x7f00000001c0)=[@text64={0x40, &(0x7f0000000040)="b9800000c00f3235001000000f30f24c0f2c49e8426dc4027d3493b80800003626660f7e676d660f1678b06cc403f9dfbeb70000000bc7442400f5000000c744240284d178bcff1c24f2f347dbe1", 0x4e}], 0x1, 0x48, 0x0, 0x0) pipe2(&(0x7f0000000000), 0x0) ioctl$KVM_RUN(r4, 0xae80, 0x0) ioctl$KVM_SET_MP_STATE(r4, 0x4004ae99, &(0x7f0000000100)) [ 1145.123607] sysfs: cannot create duplicate filename '/fs/gfs2/_' [ 1145.164553] CPU: 0 PID: 22923 Comm: syz-executor5 Not tainted 4.20.0-next-20190103 #4 [ 1145.172530] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 1145.181877] Call Trace: [ 1145.181901] dump_stack+0x1db/0x2d0 [ 1145.181922] ? dump_stack_print_info.cold+0x20/0x20 [ 1145.181942] ? _raw_spin_unlock_irqrestore+0xa4/0xe0 [ 1145.188154] sysfs_warn_dup.cold+0x1c/0x31 [ 1145.188185] sysfs_create_dir_ns+0x2ce/0x330 [ 1145.188202] ? sysfs_create_mount_point+0xa0/0xa0 [ 1145.198347] ? do_raw_spin_trylock+0x270/0x270 [ 1145.198388] kobject_add_internal.cold+0x129/0x6d8 [ 1145.198421] ? kobj_ns_type_registered+0x60/0x60 [ 1145.207034] ? kfree_const+0x59/0x70 [ 1145.207068] ? rcu_read_lock_sched_held+0x110/0x130 [ 1145.207099] ? kfree+0x1fa/0x230 [ 1145.207115] ? kfree_const+0x5e/0x70 [ 1145.207143] kobject_init_and_add+0x101/0x160 [ 1145.216534] ? kobject_add_internal+0x4b0/0x4b0 [ 1145.216553] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 1145.216565] ? vsnprintf+0x368/0x1b10 [ 1145.216588] gfs2_sys_fs_add+0x210/0x500 [ 1145.226228] ? recover_store+0x1a0/0x1a0 [ 1145.226246] ? snprintf+0xbb/0xf0 [ 1145.226258] ? vsprintf+0x30/0x40 [ 1145.226274] ? set_blocksize+0x2bf/0x340 [ 1145.226290] ? memcpy+0x46/0x50 [ 1145.226309] fill_super+0x894/0x1990 [ 1145.235043] ? gfs2_online_uevent+0x2d0/0x2d0 [ 1145.235075] ? snprintf+0xbb/0xf0 [ 1145.235101] ? vsprintf+0x40/0x40 [ 1145.235133] ? ns_capable_common+0x141/0x170 [ 1145.235148] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 1145.307294] ? set_blocksize+0x2bf/0x340 [ 1145.311347] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 1145.316867] gfs2_mount+0x5db/0x6ee [ 1145.320477] ? fill_super+0x1990/0x1990 [ 1145.324445] ? vfs_parse_fs_string+0x1c5/0x2b0 [ 1145.329010] ? vfs_parse_fs_param+0x4b0/0x4b0 [ 1145.333497] ? fill_super+0x1990/0x1990 [ 1145.337450] legacy_get_tree+0xf2/0x200 [ 1145.341407] vfs_get_tree+0x123/0x450 [ 1145.345188] do_mount+0x1622/0x2fa0 [ 1145.348799] ? copy_mount_string+0x40/0x40 [ 1145.353016] ? kmem_cache_alloc_trace+0x354/0x760 [ 1145.357857] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 1145.363374] ? copy_mount_options+0x30e/0x440 [ 1145.367851] ksys_mount+0xdb/0x150 [ 1145.371406] __x64_sys_mount+0xbe/0x150 [ 1145.375394] do_syscall_64+0x1a3/0x800 [ 1145.379276] ? syscall_return_slowpath+0x5f0/0x5f0 [ 1145.384197] ? prepare_exit_to_usermode+0x232/0x3b0 [ 1145.389219] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 1145.394068] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 1145.399242] RIP: 0033:0x45a93a [ 1145.402422] Code: b8 a6 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 ed 8c fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 0f 83 ca 8c fb ff c3 66 0f 1f 84 00 00 00 00 00 [ 1145.421331] RSP: 002b:00007fceb1aa7a88 EFLAGS: 00000206 ORIG_RAX: 00000000000000a5 [ 1145.429048] RAX: ffffffffffffffda RBX: 00007fceb1aa7b30 RCX: 000000000045a93a [ 1145.436328] RDX: 00007fceb1aa7ad0 RSI: 0000000020000200 RDI: 00007fceb1aa7af0 [ 1145.443584] RBP: 0000000020000200 R08: 00007fceb1aa7b30 R09: 00007fceb1aa7ad0 [ 1145.450863] R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000003 [ 1145.458132] R13: 0000000000000000 R14: 00000000004db380 R15: 00000000ffffffff [ 1145.467154] kobject_add_internal failed for _ with -EEXIST, don't try to register things with the same name in the same directory. [ 1145.481607] gfs2: fsid=_: error -17 adding sysfs files 03:48:05 executing program 3: syz_mount_image$gfs2(&(0x7f0000000140)='gfs2\x00', &(0x7f0000000200)='./file0\x00', 0xf00, 0x0, 0x0, 0x0, &(0x7f00000003c0)={[{@locktable={'locktable', 0x3d, '/'}}, {@lockproto_nolock='lockproto=lock_nolock'}]}) [ 1145.583879] gfs2: fsid=_: Trying to join cluster "lock_nolock", "_" [ 1145.590294] gfs2: fsid=_: Now mounting FS... [ 1145.633052] gfs2: not a GFS2 filesystem 03:48:05 executing program 5: syz_mount_image$gfs2(&(0x7f0000000140)='gfs2\x00', &(0x7f0000000200)='./file0\x00', 0x0, 0x0, 0x0, 0x0, 0x0) r0 = syz_open_dev$dmmidi(&(0x7f0000000000)='/dev/dmmidi#\x00', 0x1, 0x400000) getsockopt$inet_dccp_int(r0, 0x21, 0x6, &(0x7f00000000c0), &(0x7f0000000100)=0x4) setsockopt$EBT_SO_SET_COUNTERS(r0, 0x0, 0x81, &(0x7f0000000240)={'broute\x00', 0x0, 0x0, 0x0, [], 0x2, &(0x7f0000000040)=[{}, {}, {}, {}, {}, {}, {}, {}], 0x0, [{}, {}]}, 0x98) socketpair$unix(0x1, 0x0, 0x0, 0x0) [ 1145.684870] gfs2: fsid=_: can't read superblock [ 1145.722845] gfs2: fsid=_: can't read superblock: -22 [ 1145.736627] sysfs: cannot create duplicate filename '/fs/gfs2/_' [ 1145.776208] sysfs: cannot create duplicate filename '/fs/gfs2/_' [ 1145.799746] CPU: 0 PID: 22939 Comm: syz-executor4 Not tainted 4.20.0-next-20190103 #4 [ 1145.807755] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 1145.817119] Call Trace: [ 1145.817145] dump_stack+0x1db/0x2d0 [ 1145.817192] ? dump_stack_print_info.cold+0x20/0x20 [ 1145.817227] ? _raw_spin_unlock_irqrestore+0xa4/0xe0 [ 1145.817268] sysfs_warn_dup.cold+0x1c/0x31 [ 1145.823457] sysfs_create_dir_ns+0x2ce/0x330 [ 1145.823476] ? sysfs_create_mount_point+0xa0/0xa0 [ 1145.823492] ? do_raw_spin_trylock+0x270/0x270 [ 1145.823519] kobject_add_internal.cold+0x129/0x6d8 [ 1145.823539] ? kobj_ns_type_registered+0x60/0x60 [ 1145.833640] ? kfree_const+0x59/0x70 [ 1145.833666] ? rcu_read_lock_sched_held+0x110/0x130 [ 1145.833692] ? kfree+0x1fa/0x230 [ 1145.833708] ? kfree_const+0x5e/0x70 [ 1145.833726] kobject_init_and_add+0x101/0x160 [ 1145.842378] ? kobject_add_internal+0x4b0/0x4b0 [ 1145.842397] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 1145.842426] ? vsnprintf+0x368/0x1b10 [ 1145.851850] gfs2_sys_fs_add+0x210/0x500 [ 1145.851864] ? recover_store+0x1a0/0x1a0 [ 1145.851881] ? snprintf+0xbb/0xf0 [ 1145.861545] ? vsprintf+0x30/0x40 [ 1145.861564] ? set_blocksize+0x2bf/0x340 [ 1145.861585] ? memcpy+0x46/0x50 [ 1145.870347] fill_super+0x894/0x1990 [ 1145.870372] ? gfs2_online_uevent+0x2d0/0x2d0 [ 1145.870392] ? snprintf+0xbb/0xf0 [ 1145.929803] ? vsprintf+0x40/0x40 [ 1145.933266] ? ns_capable_common+0x141/0x170 [ 1145.937679] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 1145.942691] ? set_blocksize+0x2bf/0x340 [ 1145.946761] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 1145.952306] gfs2_mount+0x5db/0x6ee [ 1145.955940] ? fill_super+0x1990/0x1990 [ 1145.959951] ? vfs_parse_fs_string+0x1c5/0x2b0 [ 1145.964581] ? vfs_parse_fs_param+0x4b0/0x4b0 [ 1145.969107] ? fill_super+0x1990/0x1990 [ 1145.973091] legacy_get_tree+0xf2/0x200 [ 1145.977084] vfs_get_tree+0x123/0x450 [ 1145.980891] do_mount+0x1622/0x2fa0 [ 1145.984539] ? copy_mount_string+0x40/0x40 [ 1145.988781] ? kmem_cache_alloc_trace+0x354/0x760 [ 1145.993673] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 1145.999209] ? copy_mount_options+0x30e/0x440 [ 1146.003721] ksys_mount+0xdb/0x150 [ 1146.007267] __x64_sys_mount+0xbe/0x150 [ 1146.011248] do_syscall_64+0x1a3/0x800 [ 1146.015153] ? syscall_return_slowpath+0x5f0/0x5f0 [ 1146.020092] ? prepare_exit_to_usermode+0x3b0/0x3b0 [ 1146.025114] ? __switch_to_asm+0x34/0x70 [ 1146.029198] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 1146.034070] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 1146.039259] RIP: 0033:0x45a93a [ 1146.042463] Code: b8 a6 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 ed 8c fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 0f 83 ca 8c fb ff c3 66 0f 1f 84 00 00 00 00 00 [ 1146.061360] RSP: 002b:00007ff699fe9a88 EFLAGS: 00000206 ORIG_RAX: 00000000000000a5 [ 1146.069074] RAX: ffffffffffffffda RBX: 00007ff699fe9b30 RCX: 000000000045a93a [ 1146.076348] RDX: 00007ff699fe9ad0 RSI: 0000000020000200 RDI: 00007ff699fe9af0 [ 1146.083664] RBP: 0000000020000200 R08: 00007ff699fe9b30 R09: 00007ff699fe9ad0 [ 1146.090941] R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000005 [ 1146.098205] R13: 0000000000000000 R14: 00000000004db380 R15: 00000000ffffffff [ 1146.105499] CPU: 1 PID: 22952 Comm: syz-executor3 Not tainted 4.20.0-next-20190103 #4 [ 1146.113492] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 1146.122849] Call Trace: [ 1146.122866] dump_stack+0x1db/0x2d0 [ 1146.122885] ? dump_stack_print_info.cold+0x20/0x20 [ 1146.122902] ? _raw_spin_unlock_irqrestore+0xa4/0xe0 [ 1146.122922] sysfs_warn_dup.cold+0x1c/0x31 [ 1146.122939] sysfs_create_dir_ns+0x2ce/0x330 [ 1146.122955] ? sysfs_create_mount_point+0xa0/0xa0 [ 1146.152737] ? do_raw_spin_trylock+0x270/0x270 [ 1146.157346] kobject_add_internal.cold+0x129/0x6d8 [ 1146.162301] ? kobj_ns_type_registered+0x60/0x60 [ 1146.167073] ? kfree_const+0x59/0x70 [ 1146.167151] kobject_add_internal failed for _ with -EEXIST, don't try to register things with the same name in the same directory. [ 1146.170794] ? rcu_read_lock_sched_held+0x110/0x130 [ 1146.170810] ? kfree+0x1fa/0x230 [ 1146.170836] ? kfree_const+0x5e/0x70 [ 1146.170858] kobject_init_and_add+0x101/0x160 [ 1146.170876] ? kobject_add_internal+0x4b0/0x4b0 [ 1146.170893] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 1146.184838] gfs2: fsid=_: error -17 adding sysfs files [ 1146.187768] ? vsnprintf+0x368/0x1b10 [ 1146.187797] gfs2_sys_fs_add+0x210/0x500 [ 1146.187813] ? recover_store+0x1a0/0x1a0 [ 1146.187842] ? snprintf+0xbb/0xf0 [ 1146.187856] ? vsprintf+0x30/0x40 [ 1146.187873] ? set_blocksize+0x2bf/0x340 [ 1146.204091] ? memcpy+0x46/0x50 [ 1146.204115] fill_super+0x894/0x1990 [ 1146.204145] ? gfs2_online_uevent+0x2d0/0x2d0 [ 1146.204170] ? snprintf+0xbb/0xf0 [ 1146.204185] ? vsprintf+0x40/0x40 [ 1146.204206] ? ns_capable_common+0x141/0x170 [ 1146.204221] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 1146.204235] ? set_blocksize+0x2bf/0x340 [ 1146.204253] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 1146.215075] gfs2_mount+0x5db/0x6ee [ 1146.215095] ? fill_super+0x1990/0x1990 [ 1146.215142] ? vfs_parse_fs_string+0x1c5/0x2b0 [ 1146.215160] ? vfs_parse_fs_param+0x4b0/0x4b0 [ 1146.215177] ? fill_super+0x1990/0x1990 [ 1146.215192] legacy_get_tree+0xf2/0x200 [ 1146.215214] vfs_get_tree+0x123/0x450 [ 1146.275363] do_mount+0x1622/0x2fa0 [ 1146.275389] ? copy_mount_string+0x40/0x40 [ 1146.275421] ? kmem_cache_alloc_trace+0x354/0x760 [ 1146.275439] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 1146.275456] ? _copy_from_user+0xdd/0x150 [ 1146.275476] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 1146.275492] ? copy_mount_options+0x30e/0x440 [ 1146.275513] ksys_mount+0xdb/0x150 [ 1146.283111] __x64_sys_mount+0xbe/0x150 [ 1146.283133] do_syscall_64+0x1a3/0x800 [ 1146.283154] ? syscall_return_slowpath+0x5f0/0x5f0 [ 1146.283172] ? prepare_exit_to_usermode+0x232/0x3b0 [ 1146.283194] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 1146.283219] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 1146.283231] RIP: 0033:0x45a93a [ 1146.283246] Code: b8 a6 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 ed 8c fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 0f 83 ca 8c fb ff c3 66 0f 1f 84 00 00 00 00 00 [ 1146.283257] RSP: 002b:00007fdbfe5d2a88 EFLAGS: 00000206 ORIG_RAX: 00000000000000a5 [ 1146.397374] RAX: ffffffffffffffda RBX: 00007fdbfe5d2b30 RCX: 000000000045a93a [ 1146.404635] RDX: 00007fdbfe5d2ad0 RSI: 0000000020000200 RDI: 00007fdbfe5d2af0 [ 1146.411894] RBP: 0000000020000200 R08: 00007fdbfe5d2b30 R09: 00007fdbfe5d2ad0 [ 1146.419166] R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000003 [ 1146.426427] R13: 0000000000000000 R14: 00000000004db380 R15: 00000000ffffffff 03:48:06 executing program 0: socketpair$unix(0x1, 0x1, 0x0, &(0x7f0000000440)={0xffffffffffffffff, 0xffffffffffffffff}) ioctl$PERF_EVENT_IOC_ENABLE(r0, 0x8912, 0x400200) openat$vnet(0xffffffffffffff9c, &(0x7f0000000140)='/dev/vhost-net\x00', 0x2, 0x0) r1 = openat$kvm(0xffffffffffffff9c, &(0x7f00000000c0)='/dev/kvm\x00', 0x0, 0x0) openat$dlm_monitor(0xffffffffffffff9c, &(0x7f0000000340)='/dev/dlm-monitor\x00', 0x0, 0x0) r2 = ioctl$KVM_CREATE_VM(r1, 0xae01, 0x0) r3 = ioctl$KVM_CREATE_VCPU(r2, 0xae41, 0x0) syz_kvm_setup_cpu$x86(r2, 0xffffffffffffffff, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x0, 0x0, 0x0) openat$kvm(0xffffffffffffff9c, &(0x7f0000000100)='/dev/kvm\x00', 0x6800, 0x0) syz_kvm_setup_cpu$x86(0xffffffffffffffff, r3, &(0x7f0000000000/0x18000)=nil, &(0x7f00000001c0)=[@text64={0x40, &(0x7f0000000040)="b9800000c00f3235001000000f30f24c0f2c49e8426dc4027d3493b80800003626660f7e676d660f1678b06cc403f9dfbeb70000000bc7442400f5000000c744240284d178bcff1c24f2f347dbe1", 0x4e}], 0x1, 0x48, 0x0, 0x0) pipe2(&(0x7f0000000000), 0x0) ioctl$KVM_RUN(r3, 0xae80, 0x0) [ 1146.469846] kobject_add_internal failed for _ with -EEXIST, don't try to register things with the same name in the same directory. 03:48:06 executing program 1: r0 = openat$kvm(0xffffffffffffff9c, &(0x7f0000000140)='/dev/kvm\x00', 0x0, 0x0) r1 = ioctl$KVM_CREATE_VM(r0, 0xae01, 0x0) r2 = ioctl$KVM_CREATE_VCPU(r1, 0xae41, 0x0) ioctl$KVM_SET_USER_MEMORY_REGION(r1, 0x4020ae46, &(0x7f0000000000)={0x0, 0x3, 0x0, 0x2000, &(0x7f0000000000/0x2000)=nil}) syz_kvm_setup_cpu$x86(r1, 0xffffffffffffffff, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x0, 0x0, 0xfffffffffffffe78) sendmmsg$unix(0xffffffffffffffff, &(0x7f0000002780)=[{0x0, 0x0, &(0x7f0000001d00)=[{&(0x7f0000000bc0)="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", 0x3c5}], 0x1}], 0x1, 0x0) ioctl$KVM_REGISTER_COALESCED_MMIO(r1, 0x4010ae67, &(0x7f00000000c0)={0x0, 0x15200}) syz_kvm_setup_cpu$x86(0xffffffffffffffff, r2, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x8, 0x0, 0x0) r3 = syz_open_dev$media(&(0x7f0000000040)='/dev/media#\x00', 0xff, 0x65eb0f66836b1046) setsockopt$inet_tcp_TLS_RX(r3, 0x6, 0x2, &(0x7f0000000080), 0x4) ioctl$KVM_RUN(r2, 0xae80, 0x0) 03:48:06 executing program 2: syz_mount_image$gfs2(&(0x7f0000000140)='gfs2\x00', &(0x7f0000000200)='./file0\x00', 0x0, 0x0, 0x0, 0x0, &(0x7f00000003c0)={[{@locktable={'locktable', 0x3d, '/'}}, {@lockproto_nolock='lockproto=lock_nolock'}]}) [ 1146.555774] gfs2: fsid=_: error -17 adding sysfs files [ 1146.593049] gfs2: not a GFS2 filesystem 03:48:06 executing program 4: syz_mount_image$gfs2(&(0x7f0000000140)='gfs2\x00', &(0x7f0000000200)='./file0\x00', 0xf225010000000000, 0x0, 0x0, 0x0, &(0x7f00000003c0)={[{@locktable={'locktable', 0x3d, '/'}}, {@lockproto_nolock='lockproto=lock_nolock'}]}) socketpair$unix(0x1, 0x1, 0x0, &(0x7f0000000180)) 03:48:06 executing program 3: syz_mount_image$gfs2(&(0x7f0000000140)='gfs2\x00', &(0x7f0000000200)='./file0\x00', 0x6c00, 0x0, 0x0, 0x0, &(0x7f00000003c0)={[{@locktable={'locktable', 0x3d, '/'}}, {@lockproto_nolock='lockproto=lock_nolock'}]}) [ 1146.730119] gfs2: fsid=_: Trying to join cluster "lock_nolock", "_" [ 1146.762943] gfs2: fsid=_: Now mounting FS... 03:48:06 executing program 5: syz_mount_image$gfs2(&(0x7f0000000140)='gfs2\x00', &(0x7f0000000200)='./file0\x00', 0x0, 0x0, 0x0, 0x0, &(0x7f00000003c0)={[{@locktable={'locktable', 0x3d, '/'}}, {@lockproto_nolock='lockproto=lock_nolock'}]}) [ 1146.780718] gfs2: not a GFS2 filesystem [ 1146.790861] gfs2: fsid=_: can't read superblock [ 1146.802412] gfs2: fsid=_: can't read superblock: -22 [ 1146.815299] sysfs: cannot create duplicate filename '/fs/gfs2/_' [ 1146.821539] sysfs: cannot create duplicate filename '/fs/gfs2/_' [ 1146.874175] CPU: 1 PID: 22983 Comm: syz-executor3 Not tainted 4.20.0-next-20190103 #4 [ 1146.882171] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 1146.882178] Call Trace: [ 1146.882204] dump_stack+0x1db/0x2d0 [ 1146.882228] ? dump_stack_print_info.cold+0x20/0x20 [ 1146.902782] ? _raw_spin_unlock_irqrestore+0xa4/0xe0 [ 1146.907910] sysfs_warn_dup.cold+0x1c/0x31 [ 1146.912160] sysfs_create_dir_ns+0x2ce/0x330 [ 1146.912178] ? sysfs_create_mount_point+0xa0/0xa0 [ 1146.912197] ? do_raw_spin_trylock+0x270/0x270 [ 1146.926037] kobject_add_internal.cold+0x129/0x6d8 [ 1146.931023] ? kobj_ns_type_registered+0x60/0x60 [ 1146.935800] ? kfree_const+0x59/0x70 [ 1146.939544] ? rcu_read_lock_sched_held+0x110/0x130 [ 1146.944579] ? kfree+0x1fa/0x230 [ 1146.947959] ? kfree_const+0x5e/0x70 [ 1146.947982] kobject_init_and_add+0x101/0x160 [ 1146.948003] ? kobject_add_internal+0x4b0/0x4b0 [ 1146.960870] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 1146.966450] ? vsnprintf+0x368/0x1b10 [ 1146.970277] gfs2_sys_fs_add+0x210/0x500 [ 1146.974349] ? recover_store+0x1a0/0x1a0 [ 1146.978425] ? snprintf+0xbb/0xf0 [ 1146.981901] ? vsprintf+0x30/0x40 [ 1146.985365] ? set_blocksize+0x2bf/0x340 [ 1146.989437] ? memcpy+0x46/0x50 [ 1146.992775] fill_super+0x894/0x1990 [ 1146.996524] ? gfs2_online_uevent+0x2d0/0x2d0 [ 1147.001032] ? snprintf+0xbb/0xf0 [ 1147.001047] ? vsprintf+0x40/0x40 [ 1147.001079] ? ns_capable_common+0x141/0x170 [ 1147.012372] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 1147.012388] ? set_blocksize+0x2bf/0x340 [ 1147.012405] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 1147.012423] gfs2_mount+0x5db/0x6ee [ 1147.030627] ? fill_super+0x1990/0x1990 [ 1147.034657] ? vfs_parse_fs_string+0x1c5/0x2b0 [ 1147.039282] ? vfs_parse_fs_param+0x4b0/0x4b0 [ 1147.043782] ? fill_super+0x1990/0x1990 [ 1147.043799] legacy_get_tree+0xf2/0x200 [ 1147.043830] vfs_get_tree+0x123/0x450 [ 1147.043850] do_mount+0x1622/0x2fa0 [ 1147.043874] ? copy_mount_string+0x40/0x40 [ 1147.063449] ? kmem_cache_alloc_trace+0x354/0x760 [ 1147.068353] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 1147.073893] ? copy_mount_options+0x30e/0x440 [ 1147.078400] ksys_mount+0xdb/0x150 [ 1147.081944] __x64_sys_mount+0xbe/0x150 [ 1147.085930] do_syscall_64+0x1a3/0x800 [ 1147.089848] ? syscall_return_slowpath+0x5f0/0x5f0 [ 1147.094783] ? prepare_exit_to_usermode+0x232/0x3b0 [ 1147.099835] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 1147.104713] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 1147.109903] RIP: 0033:0x45a93a 03:48:06 executing program 1: r0 = openat$kvm(0xffffffffffffff9c, &(0x7f0000000140)='/dev/kvm\x00', 0x0, 0x0) r1 = ioctl$KVM_CREATE_VM(r0, 0xae01, 0x0) r2 = ioctl$KVM_CREATE_VCPU(r1, 0xae41, 0x0) ioctl$KVM_SET_USER_MEMORY_REGION(r1, 0x4020ae46, &(0x7f0000000400)={0x0, 0x3, 0x0, 0x2000, &(0x7f0000000000/0x2000)=nil}) syz_kvm_setup_cpu$x86(r1, 0xffffffffffffffff, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x0, 0x0, 0xfffffffffffffe78) r3 = getpid() r4 = openat$null(0xffffffffffffff9c, &(0x7f0000000080)='/dev/null\x00', 0x400080, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000200)={0xffffffffffffff9c, 0x50, &(0x7f0000000180)={0x0, 0x0}}, 0x10) bpf$BPF_TASK_FD_QUERY(0x14, &(0x7f0000000240)={r3, r4, 0x0, 0x6, &(0x7f0000000100)='eth1:\x00', r5}, 0x30) ioctl$ASHMEM_GET_PROT_MASK(r4, 0x7706, &(0x7f0000000280)) sendmmsg$unix(0xffffffffffffffff, &(0x7f0000002780)=[{0x0, 0x0, &(0x7f0000001d00)=[{&(0x7f0000000bc0)="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", 0x3c5}], 0x1}], 0x1, 0x0) ioctl$VHOST_SET_FEATURES(r2, 0x4008af00, &(0x7f0000000040)=0x200000000) r6 = socket$netlink(0x10, 0x3, 0x1f9fc67239143f49) connect$netlink(r6, &(0x7f0000000000)=@proc={0x10, 0x0, 0x25dfdbfe, 0x2a420140}, 0xc) ioctl$KVM_REGISTER_COALESCED_MMIO(r1, 0x4010ae67, &(0x7f00000000c0)={0x0, 0x15200}) syz_kvm_setup_cpu$x86(0xffffffffffffffff, r2, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x8, 0x0, 0x0) ioctl$KVM_RUN(r2, 0xae80, 0x0) [ 1147.113103] Code: b8 a6 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 ed 8c fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 0f 83 ca 8c fb ff c3 66 0f 1f 84 00 00 00 00 00 [ 1147.132005] RSP: 002b:00007fdbfe5d2a88 EFLAGS: 00000206 ORIG_RAX: 00000000000000a5 [ 1147.139716] RAX: ffffffffffffffda RBX: 00007fdbfe5d2b30 RCX: 000000000045a93a [ 1147.146979] RDX: 00007fdbfe5d2ad0 RSI: 0000000020000200 RDI: 00007fdbfe5d2af0 [ 1147.154245] RBP: 0000000020000200 R08: 00007fdbfe5d2b30 R09: 00007fdbfe5d2ad0 [ 1147.161518] R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000003 [ 1147.161528] R13: 0000000000000000 R14: 00000000004db380 R15: 00000000ffffffff [ 1147.176420] kobject_add_internal failed for _ with -EEXIST, don't try to register things with the same name in the same directory. [ 1147.190744] CPU: 0 PID: 22986 Comm: syz-executor4 Not tainted 4.20.0-next-20190103 #4 [ 1147.198727] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 1147.208088] Call Trace: [ 1147.208110] dump_stack+0x1db/0x2d0 [ 1147.208132] ? dump_stack_print_info.cold+0x20/0x20 [ 1147.208152] ? _raw_spin_unlock_irqrestore+0xa4/0xe0 [ 1147.214367] sysfs_warn_dup.cold+0x1c/0x31 [ 1147.214388] sysfs_create_dir_ns+0x2ce/0x330 [ 1147.214407] ? sysfs_create_mount_point+0xa0/0xa0 [ 1147.214424] ? do_raw_spin_trylock+0x270/0x270 [ 1147.214454] kobject_add_internal.cold+0x129/0x6d8 [ 1147.224572] ? kobj_ns_type_registered+0x60/0x60 [ 1147.224588] ? kfree_const+0x59/0x70 [ 1147.224608] ? rcu_read_lock_sched_held+0x110/0x130 [ 1147.233256] ? kfree+0x1fa/0x230 [ 1147.233276] ? kfree_const+0x5e/0x70 [ 1147.233298] kobject_init_and_add+0x101/0x160 [ 1147.233315] ? kobject_add_internal+0x4b0/0x4b0 [ 1147.233343] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 1147.242741] ? vsnprintf+0x368/0x1b10 [ 1147.242772] gfs2_sys_fs_add+0x210/0x500 [ 1147.242787] ? recover_store+0x1a0/0x1a0 [ 1147.242807] ? snprintf+0xbb/0xf0 [ 1147.248528] gfs2: fsid=_: Trying to join cluster "lock_nolock", "_" [ 1147.252485] ? vsprintf+0x30/0x40 [ 1147.252505] ? set_blocksize+0x2bf/0x340 [ 1147.252526] ? memcpy+0x46/0x50 [ 1147.252548] fill_super+0x894/0x1990 [ 1147.256740] gfs2: fsid=_: Now mounting FS... [ 1147.261272] ? gfs2_online_uevent+0x2d0/0x2d0 [ 1147.261297] ? snprintf+0xbb/0xf0 [ 1147.261316] ? vsprintf+0x40/0x40 [ 1147.265737] gfs2: not a GFS2 filesystem [ 1147.268393] ? ns_capable_common+0x141/0x170 [ 1147.268410] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 1147.268424] ? set_blocksize+0x2bf/0x340 [ 1147.268447] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 1147.273359] gfs2: fsid=_: can't read superblock [ 1147.277601] gfs2_mount+0x5db/0x6ee [ 1147.277622] ? fill_super+0x1990/0x1990 [ 1147.277668] ? vfs_parse_fs_string+0x1c5/0x2b0 [ 1147.283590] gfs2: fsid=_: can't read superblock: -22 [ 1147.286988] ? vfs_parse_fs_param+0x4b0/0x4b0 [ 1147.287006] ? fill_super+0x1990/0x1990 [ 1147.287022] legacy_get_tree+0xf2/0x200 [ 1147.287044] vfs_get_tree+0x123/0x450 [ 1147.331825] do_mount+0x1622/0x2fa0 [ 1147.331854] ? copy_mount_string+0x40/0x40 [ 1147.331873] ? kmem_cache_alloc_trace+0x354/0x760 [ 1147.331890] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 1147.339304] ? _copy_from_user+0xdd/0x150 [ 1147.339343] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 1147.339359] ? copy_mount_options+0x30e/0x440 [ 1147.339380] ksys_mount+0xdb/0x150 [ 1147.348795] __x64_sys_mount+0xbe/0x150 [ 1147.348817] do_syscall_64+0x1a3/0x800 [ 1147.348846] ? syscall_return_slowpath+0x5f0/0x5f0 [ 1147.348865] ? prepare_exit_to_usermode+0x232/0x3b0 [ 1147.358453] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 1147.358488] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 1147.358499] RIP: 0033:0x45a93a [ 1147.358525] Code: b8 a6 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 ed 8c fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 0f 83 ca 8c fb ff c3 66 0f 1f 84 00 00 00 00 00 [ 1147.366794] RSP: 002b:00007ff699fe9a88 EFLAGS: 00000206 ORIG_RAX: 00000000000000a5 [ 1147.366817] RAX: ffffffffffffffda RBX: 00007ff699fe9b30 RCX: 000000000045a93a [ 1147.366824] RDX: 00007ff699fe9ad0 RSI: 0000000020000200 RDI: 00007ff699fe9af0 [ 1147.366832] RBP: 0000000020000200 R08: 00007ff699fe9b30 R09: 00007ff699fe9ad0 [ 1147.366840] R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000003 [ 1147.366847] R13: 0000000000000000 R14: 00000000004db380 R15: 00000000ffffffff [ 1147.468525] gfs2: fsid=_: error -17 adding sysfs files [ 1147.534784] kobject_add_internal failed for _ with -EEXIST, don't try to register things with the same name in the same directory. 03:48:07 executing program 2: syz_mount_image$gfs2(&(0x7f0000000140)='gfs2\x00', &(0x7f0000000200)='./file0\x00', 0x0, 0x0, 0x0, 0x0, &(0x7f00000003c0)={[{@locktable={'locktable', 0x3d, '/'}}, {@lockproto_nolock='lockproto=lock_nolock'}]}) [ 1147.599770] gfs2: fsid=_: error -17 adding sysfs files 03:48:07 executing program 5: r0 = socket$inet(0x2, 0x4000000000000001, 0x0) setsockopt$inet_tcp_int(r0, 0x6, 0x80000000000002, &(0x7f0000000040)=0x74, 0x4) bind$inet(r0, &(0x7f0000000180)={0x2, 0x4e23, @multicast1}, 0x10) sendto$inet(r0, 0x0, 0x0, 0x200007fd, &(0x7f0000e68000)={0x2, 0x4e23, @local}, 0x10) write$binfmt_elf64(r0, &(0x7f00000012c0)=ANY=[@ANYBLOB="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"], 0x1c8) mmap(&(0x7f0000000000/0xb36000)=nil, 0xb36000, 0x3, 0x8031, 0xffffffffffffffff, 0x0) sendmmsg$inet_sctp(r0, &(0x7f0000002600)=[{0x0, 0x0, &(0x7f0000000240)=[{&(0x7f0000000380)="d4", 0x1}], 0x1, 0x0, 0x0, 0xf00}], 0x1, 0x0) 03:48:07 executing program 3: syz_mount_image$gfs2(&(0x7f0000000140)='gfs2\x00', &(0x7f0000000200)='./file0\x00', 0x1800, 0x0, 0x0, 0x0, &(0x7f00000003c0)={[{@locktable={'locktable', 0x3d, '/'}}, {@lockproto_nolock='lockproto=lock_nolock'}]}) 03:48:07 executing program 0: socketpair$unix(0x1, 0x1, 0x0, &(0x7f0000000440)={0xffffffffffffffff, 0xffffffffffffffff}) fcntl$dupfd(r0, 0x0, r0) openat$zero(0xffffffffffffff9c, &(0x7f0000000100)='/dev/zero\x00', 0x10000, 0x0) r1 = creat(&(0x7f0000000140)='./file0\x00', 0x1) ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200) r2 = openat$kvm(0xffffffffffffff9c, &(0x7f00000000c0)='/dev/kvm\x00', 0x0, 0x0) openat$dlm_monitor(0xffffffffffffff9c, &(0x7f0000000340)='/dev/dlm-monitor\x00', 0x0, 0x0) r3 = ioctl$KVM_CREATE_VM(r2, 0xae01, 0x0) r4 = ioctl$KVM_CREATE_VCPU(r3, 0xae41, 0x0) syz_kvm_setup_cpu$x86(r3, 0xffffffffffffffff, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x0, 0x0, 0x0) syz_kvm_setup_cpu$x86(0xffffffffffffffff, r4, &(0x7f0000000000/0x18000)=nil, &(0x7f00000001c0)=[@text64={0x40, &(0x7f0000000040)="b9800000c00f3235001000000f30f24c0f2c49e8426dc4027d3493b80800003626660f7e676d660f1678b06cc403f9dfbeb70000000bc7442400f5000000c744240284d178bcff1c24f2f347dbe1", 0x4e}], 0x1, 0x48, 0x0, 0x0) pipe2(&(0x7f0000000000), 0x0) ioctl$KVM_RUN(r4, 0xae80, 0x0) 03:48:07 executing program 4: syz_mount_image$gfs2(&(0x7f0000000140)='gfs2\x00', &(0x7f0000000200)='./file0\x00', 0xd625010000000000, 0x0, 0x0, 0x0, &(0x7f00000003c0)={[{@locktable={'locktable', 0x3d, '/'}}, {@lockproto_nolock='lockproto=lock_nolock'}]}) socketpair$unix(0x1, 0x1, 0x0, &(0x7f0000000180)) [ 1147.729624] gfs2: fsid=_: Trying to join cluster "lock_nolock", "_" [ 1147.793967] gfs2: fsid=_: Now mounting FS... [ 1147.811666] gfs2: not a GFS2 filesystem [ 1147.824649] gfs2: fsid=_: can't read superblock [ 1147.844542] sysfs: cannot create duplicate filename '/fs/gfs2/_' [ 1147.858915] gfs2: fsid=_: can't read superblock: -22 [ 1147.874886] CPU: 0 PID: 23023 Comm: syz-executor3 Not tainted 4.20.0-next-20190103 #4 [ 1147.882861] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 1147.892203] Call Trace: [ 1147.894788] dump_stack+0x1db/0x2d0 [ 1147.898421] ? dump_stack_print_info.cold+0x20/0x20 [ 1147.903445] ? _raw_spin_unlock_irqrestore+0xa4/0xe0 [ 1147.908549] sysfs_warn_dup.cold+0x1c/0x31 [ 1147.912786] sysfs_create_dir_ns+0x2ce/0x330 [ 1147.917214] ? sysfs_create_mount_point+0xa0/0xa0 [ 1147.922050] ? do_raw_spin_trylock+0x270/0x270 [ 1147.926648] kobject_add_internal.cold+0x129/0x6d8 [ 1147.931590] ? kobj_ns_type_registered+0x60/0x60 [ 1147.936354] ? kfree_const+0x59/0x70 [ 1147.940070] ? rcu_read_lock_sched_held+0x110/0x130 [ 1147.945091] ? kfree+0x1fa/0x230 [ 1147.948456] ? kfree_const+0x5e/0x70 [ 1147.952191] kobject_init_and_add+0x101/0x160 [ 1147.956684] ? kobject_add_internal+0x4b0/0x4b0 [ 1147.961372] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 1147.966899] ? vsnprintf+0x368/0x1b10 [ 1147.970738] gfs2_sys_fs_add+0x210/0x500 [ 1147.974794] ? recover_store+0x1a0/0x1a0 [ 1147.978851] ? snprintf+0xbb/0xf0 [ 1147.982300] ? vsprintf+0x30/0x40 [ 1147.985790] ? set_blocksize+0x2bf/0x340 [ 1147.989858] ? memcpy+0x46/0x50 [ 1147.993161] fill_super+0x894/0x1990 [ 1147.996888] ? gfs2_online_uevent+0x2d0/0x2d0 [ 1148.001398] ? snprintf+0xbb/0xf0 [ 1148.004849] ? vsprintf+0x40/0x40 [ 1148.008304] ? ns_capable_common+0x141/0x170 [ 1148.012711] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 1148.017723] ? set_blocksize+0x2bf/0x340 [ 1148.021792] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 1148.027355] gfs2_mount+0x5db/0x6ee [ 1148.030976] ? fill_super+0x1990/0x1990 [ 1148.034989] ? vfs_parse_fs_string+0x1c5/0x2b0 [ 1148.039562] ? vfs_parse_fs_param+0x4b0/0x4b0 [ 1148.044046] ? fill_super+0x1990/0x1990 [ 1148.048051] legacy_get_tree+0xf2/0x200 [ 1148.052035] vfs_get_tree+0x123/0x450 [ 1148.055850] do_mount+0x1622/0x2fa0 [ 1148.059488] ? copy_mount_string+0x40/0x40 [ 1148.063718] ? kmem_cache_alloc_trace+0x354/0x760 [ 1148.068551] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 1148.074125] ? _copy_from_user+0xdd/0x150 [ 1148.078267] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 1148.083796] ? copy_mount_options+0x30e/0x440 [ 1148.088305] ksys_mount+0xdb/0x150 [ 1148.091842] __x64_sys_mount+0xbe/0x150 [ 1148.095813] do_syscall_64+0x1a3/0x800 [ 1148.099779] ? syscall_return_slowpath+0x5f0/0x5f0 [ 1148.104712] ? prepare_exit_to_usermode+0x232/0x3b0 [ 1148.109726] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 1148.114568] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 1148.119744] RIP: 0033:0x45a93a [ 1148.122926] Code: b8 a6 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 ed 8c fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 0f 83 ca 8c fb ff c3 66 0f 1f 84 00 00 00 00 00 03:48:07 executing program 1: r0 = openat$kvm(0xffffffffffffff9c, &(0x7f0000000140)='/dev/kvm\x00', 0x0, 0x0) r1 = ioctl$KVM_CREATE_VM(r0, 0xae01, 0x0) r2 = ioctl$KVM_CREATE_VCPU(r1, 0xae41, 0x0) ioctl$KVM_SET_USER_MEMORY_REGION(r1, 0x4020ae46, &(0x7f0000000400)={0x0, 0x3, 0x0, 0x2000, &(0x7f0000000000/0x2000)=nil}) sendmmsg$unix(0xffffffffffffffff, &(0x7f0000002780)=[{0x0, 0x0, &(0x7f0000001d00)=[{&(0x7f0000000bc0)="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", 0x3c5}], 0x1}], 0x1, 0x0) ioctl$KVM_REGISTER_COALESCED_MMIO(r1, 0x4010ae67, &(0x7f00000000c0)={0x0, 0x15200}) syz_kvm_setup_cpu$x86(0xffffffffffffffff, r2, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x8, 0x0, 0x0) ioctl$KVM_RUN(r2, 0xae80, 0x0) fchdir(r1) [ 1148.141813] RSP: 002b:00007fdbfe5d2a88 EFLAGS: 00000206 ORIG_RAX: 00000000000000a5 [ 1148.149518] RAX: ffffffffffffffda RBX: 00007fdbfe5d2b30 RCX: 000000000045a93a [ 1148.156779] RDX: 00007fdbfe5d2ad0 RSI: 0000000020000200 RDI: 00007fdbfe5d2af0 [ 1148.164038] RBP: 0000000020000200 R08: 00007fdbfe5d2b30 R09: 00007fdbfe5d2ad0 [ 1148.171314] R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000003 [ 1148.178590] R13: 0000000000000000 R14: 00000000004db380 R15: 00000000ffffffff [ 1148.226189] sysfs: cannot create duplicate filename '/fs/gfs2/_' [ 1148.246165] CPU: 1 PID: 23028 Comm: syz-executor4 Not tainted 4.20.0-next-20190103 #4 [ 1148.254145] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 1148.263492] Call Trace: [ 1148.266098] dump_stack+0x1db/0x2d0 [ 1148.269724] ? dump_stack_print_info.cold+0x20/0x20 [ 1148.274742] ? _raw_spin_unlock_irqrestore+0xa4/0xe0 [ 1148.279870] sysfs_warn_dup.cold+0x1c/0x31 [ 1148.284123] sysfs_create_dir_ns+0x2ce/0x330 [ 1148.288543] ? sysfs_create_mount_point+0xa0/0xa0 [ 1148.288572] ? do_raw_spin_trylock+0x270/0x270 [ 1148.288628] kobject_add_internal.cold+0x129/0x6d8 [ 1148.288660] ? kobj_ns_type_registered+0x60/0x60 [ 1148.298081] ? kfree_const+0x59/0x70 [ 1148.298096] ? rcu_read_lock_sched_held+0x110/0x130 [ 1148.298109] ? kfree+0x1fa/0x230 [ 1148.298126] ? kfree_const+0x5e/0x70 [ 1148.298145] kobject_init_and_add+0x101/0x160 [ 1148.307829] ? kobject_add_internal+0x4b0/0x4b0 [ 1148.307848] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 1148.307872] ? vsnprintf+0x368/0x1b10 [ 1148.307894] gfs2_sys_fs_add+0x210/0x500 [ 1148.316644] ? recover_store+0x1a0/0x1a0 [ 1148.316662] ? snprintf+0xbb/0xf0 [ 1148.316675] ? vsprintf+0x30/0x40 [ 1148.316691] ? set_blocksize+0x2bf/0x340 [ 1148.316732] ? memcpy+0x46/0x50 [ 1148.316750] fill_super+0x894/0x1990 [ 1148.316776] ? gfs2_online_uevent+0x2d0/0x2d0 [ 1148.316829] ? snprintf+0xbb/0xf0 [ 1148.316842] ? vsprintf+0x40/0x40 [ 1148.316861] ? ns_capable_common+0x141/0x170 [ 1148.316874] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 1148.316886] ? set_blocksize+0x2bf/0x340 [ 1148.316902] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 1148.398661] gfs2_mount+0x5db/0x6ee [ 1148.402280] ? fill_super+0x1990/0x1990 [ 1148.406285] ? vfs_parse_fs_string+0x1c5/0x2b0 [ 1148.410864] ? vfs_parse_fs_param+0x4b0/0x4b0 [ 1148.415357] ? fill_super+0x1990/0x1990 [ 1148.419325] legacy_get_tree+0xf2/0x200 [ 1148.423298] vfs_get_tree+0x123/0x450 [ 1148.427096] do_mount+0x1622/0x2fa0 [ 1148.430722] ? copy_mount_string+0x40/0x40 [ 1148.434960] ? kmem_cache_alloc_trace+0x354/0x760 [ 1148.439809] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 1148.445347] ? copy_mount_options+0x30e/0x440 [ 1148.449847] ksys_mount+0xdb/0x150 [ 1148.453383] __x64_sys_mount+0xbe/0x150 [ 1148.457382] do_syscall_64+0x1a3/0x800 [ 1148.461274] ? syscall_return_slowpath+0x5f0/0x5f0 [ 1148.466197] ? prepare_exit_to_usermode+0x232/0x3b0 [ 1148.471212] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 1148.476081] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 1148.481272] RIP: 0033:0x45a93a [ 1148.484455] Code: b8 a6 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 ed 8c fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 0f 83 ca 8c fb ff c3 66 0f 1f 84 00 00 00 00 00 [ 1148.503347] RSP: 002b:00007ff699fe9a88 EFLAGS: 00000206 ORIG_RAX: 00000000000000a5 [ 1148.511054] RAX: ffffffffffffffda RBX: 00007ff699fe9b30 RCX: 000000000045a93a [ 1148.518334] RDX: 00007ff699fe9ad0 RSI: 0000000020000200 RDI: 00007ff699fe9af0 [ 1148.526049] RBP: 0000000020000200 R08: 00007ff699fe9b30 R09: 00007ff699fe9ad0 [ 1148.533329] R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000003 [ 1148.540590] R13: 0000000000000000 R14: 00000000004db380 R15: 00000000ffffffff [ 1148.548580] kobject_add_internal failed for _ with -EEXIST, don't try to register things with the same name in the same directory. [ 1148.598256] gfs2: fsid=_: error -17 adding sysfs files 03:48:08 executing program 2: syz_mount_image$gfs2(&(0x7f0000000140)='gfs2\x00', &(0x7f0000000200)='./file0\x00', 0x0, 0x0, 0x0, 0x0, &(0x7f00000003c0)={[{@locktable={'locktable', 0x3d, '/'}}, {@lockproto_nolock='lockproto=lock_nolock'}]}) [ 1148.652812] kobject_add_internal failed for _ with -EEXIST, don't try to register things with the same name in the same directory. 03:48:08 executing program 1: r0 = openat$ppp(0xffffffffffffff9c, &(0x7f0000000100)='/dev/ppp\x00', 0x541100, 0x0) ioctl$KVM_GET_CPUID2(r0, 0xc008ae91, &(0x7f0000000440)=ANY=[@ANYBLOB="0900000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000023000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000bf000000000000000000000000000000000000000000000000000000495438fec40551242fc374cd3095534836c0c4495f2eb9ac6924fcd2a5fbf0cd435329391596ffccd5c5ba4f579a116453bded5fbd4f2e33d902cd9bdcb01a824a1194d2ea299e3286f54464a7b7df01bf0520c66b25c71b48f232f5fb587a051862397999eb35e81846e2d31f9a00281b2694c882f3d43479fbf8e7f46156992883f0db91bd32d3b764f43f2abb3d3acebe06be9afe0e770cadf58b624697c03ef7eadfbb972beb39adab14411fc1e51963858a118c7797ffde5f92edb19c43fd30caa2b0c5118550684ec1519cbd5800"]) r1 = openat$kvm(0xffffffffffffff9c, &(0x7f0000000140)='/dev/kvm\x00', 0x0, 0x0) r2 = ioctl$KVM_CREATE_VM(r1, 0xae01, 0x0) r3 = ioctl$KVM_CREATE_VCPU(r2, 0xae41, 0x0) bpf$OBJ_PIN_PROG(0x6, &(0x7f0000000040)={&(0x7f0000000000)='./file0\x00', r3}, 0x10) ioctl$KVM_SET_USER_MEMORY_REGION(r2, 0x4020ae46, &(0x7f0000000400)={0x0, 0x3, 0x0, 0x2000, &(0x7f0000000000/0x2000)=nil}) syz_kvm_setup_cpu$x86(r2, 0xffffffffffffffff, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x0, 0x0, 0xfffffffffffffe78) sendmmsg$unix(0xffffffffffffffff, &(0x7f0000002780)=[{0x0, 0x0, &(0x7f0000001d00)=[{&(0x7f0000000bc0)="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", 0x3c5}], 0x1}], 0x1, 0x0) ioctl$KVM_REGISTER_COALESCED_MMIO(r2, 0x4010ae67, &(0x7f00000000c0)={0x0, 0x15200}) syz_kvm_setup_cpu$x86(0xffffffffffffffff, r3, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x8, 0x0, 0x0) ioctl$KVM_RUN(r3, 0xae80, 0x0) setsockopt$inet_udp_encap(r2, 0x11, 0x64, &(0x7f0000000080)=0x1, 0x4) 03:48:08 executing program 3: syz_mount_image$gfs2(&(0x7f0000000140)='gfs2\x00', &(0x7f0000000200)='./file0\x00', 0x300000000000000, 0x0, 0x0, 0x0, &(0x7f00000003c0)={[{@locktable={'locktable', 0x3d, '/'}}, {@lockproto_nolock='lockproto=lock_nolock'}]}) [ 1148.756303] gfs2: fsid=_: Trying to join cluster "lock_nolock", "_" 03:48:08 executing program 0: socketpair$unix(0x1, 0x1, 0x0, &(0x7f0000000440)={0xffffffffffffffff, 0xffffffffffffffff}) ioctl$PERF_EVENT_IOC_ENABLE(r0, 0x8912, 0x400200) r1 = openat$kvm(0xffffffffffffff9c, &(0x7f00000000c0)='/dev/kvm\x00', 0x0, 0x0) r2 = openat$dlm_monitor(0xffffffffffffff9c, &(0x7f0000000380)='/dev/dlm-monitor\x00', 0x4000, 0x0) r3 = ioctl$KVM_CREATE_VM(r1, 0xae01, 0x0) r4 = ioctl$KVM_CREATE_VCPU(r3, 0xae41, 0x0) getsockopt$inet_sctp_SCTP_GET_LOCAL_ADDRS(r2, 0x84, 0x6d, &(0x7f0000000200)={0x0, 0xe4, "36aa0432a5178af654a1885d92624c77c7d4f5e60d47fb129737a2ff0d1de9c0f4643e131289a2799ade9da28691f64f75e65a6361a70812850098754ead478954044d5a760603b2df0a3c07f396173a4666b9a82ba8d10d39ae998c4cd085a9e0dd921aea55c6b120e1c41d4e21b5081431ab4c59f491bb9575b95e1f34480aaa72c4738a53ec98467dcdbd1f86813d872c17fe6b372417e9bcff37190ac1bcf4fc5ba2bd52e36680bf101625578ee803632d43b591077f5bda34a804421dd9fa60d9301cd372f6636dc38b5559ad692ad42e8b4d5b532c25daa46401ebb6b525317809"}, &(0x7f0000000100)=0xec) getsockopt$inet_sctp6_SCTP_GET_ASSOC_STATS(r2, 0x84, 0x70, &(0x7f0000000480)={r5, @in6={{0xa, 0x4e24, 0x84d8, @empty, 0x419}}, [0x4, 0xffffffff, 0x2, 0x0, 0x100000001, 0x49f, 0x8, 0x3, 0x20, 0x0, 0x6, 0x0, 0xdb7, 0x1, 0x80]}, &(0x7f0000000140)=0x100) syz_kvm_setup_cpu$x86(r3, 0xffffffffffffffff, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x0, 0x0, 0x0) syz_kvm_setup_cpu$x86(0xffffffffffffffff, r4, &(0x7f0000000000/0x18000)=nil, &(0x7f00000001c0)=[@text64={0x40, &(0x7f0000000040)="b9800000c00f3235001000000f30f24c0f2c49e8426dc4027d3493b80800003626660f7e676d660f1678b06cc403f9dfbeb70000000bc7442400f5000000c744240284d178bcff1c24f2f347dbe1", 0x4e}], 0x1, 0x48, 0x0, 0x0) pipe2(&(0x7f0000000000), 0x0) ioctl$KVM_RUN(r4, 0xae80, 0x0) [ 1148.798474] gfs2: fsid=_: Now mounting FS... [ 1148.813382] gfs2: not a GFS2 filesystem [ 1148.829885] gfs2: fsid=_: can't read superblock [ 1148.848937] gfs2: fsid=_: can't read superblock: -22 [ 1148.922866] gfs2: fsid=_: error -17 adding sysfs files 03:48:08 executing program 1: r0 = openat$kvm(0xffffffffffffff9c, &(0x7f0000000040)='/dev/kvm\x00', 0xfffffffffffffffe, 0x0) r1 = ioctl$KVM_CREATE_VM(r0, 0xae01, 0x0) r2 = ioctl$KVM_CREATE_VCPU(r1, 0xae41, 0x0) ioctl$KVM_SET_USER_MEMORY_REGION(r1, 0x4020ae46, &(0x7f0000000400)={0x0, 0x3, 0x0, 0x2000, &(0x7f0000000000/0x2000)=nil}) syz_kvm_setup_cpu$x86(r1, 0xffffffffffffffff, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x0, 0x0, 0xfffffffffffffe78) sendmmsg$unix(0xffffffffffffffff, &(0x7f0000002780)=[{0x0, 0x0, &(0x7f0000001d00)=[{&(0x7f0000000bc0)="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", 0x3c5}], 0x1}], 0x1, 0x0) r3 = syz_open_dev$audion(&(0x7f0000000000)='/dev/audio#\x00', 0x0, 0x802) ioctl$KVM_REGISTER_COALESCED_MMIO(r1, 0x4010ae67, &(0x7f00000000c0)={0x0, 0x15200}) ioctl$KVM_ENABLE_CAP_CPU(r3, 0x4068aea3, &(0x7f0000000100)={0x7b, 0x0, [0x70cd67a4, 0x6, 0x7f, 0x80000001]}) clock_getres(0x7, &(0x7f0000000080)) syz_kvm_setup_cpu$x86(0xffffffffffffffff, r2, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x8, 0x0, 0x0) ioctl$KVM_RUN(r2, 0xae80, 0x0) 03:48:08 executing program 4: syz_mount_image$gfs2(&(0x7f0000000140)='gfs2\x00', &(0x7f0000000200)='./file0\x00', 0xd7250100, 0x0, 0x0, 0x0, &(0x7f00000003c0)={[{@locktable={'locktable', 0x3d, '/'}}, {@lockproto_nolock='lockproto=lock_nolock'}]}) socketpair$unix(0x1, 0x1, 0x0, &(0x7f0000000180)) [ 1149.081240] gfs2: fsid=_: Trying to join cluster "lock_nolock", "_" 03:48:08 executing program 2: syz_mount_image$gfs2(&(0x7f0000000140)='gfs2\x00', &(0x7f0000000200)='./file0\x00', 0x0, 0x0, 0x0, 0x0, &(0x7f00000003c0)={[{@locktable={'locktable', 0x3d, '/'}}, {@lockproto_nolock='lockproto=lock_nolock'}]}) [ 1149.182574] gfs2: fsid=_: Now mounting FS... [ 1149.220264] gfs2: not a GFS2 filesystem [ 1149.226481] sysfs: cannot create duplicate filename '/fs/gfs2/_' [ 1149.249075] CPU: 0 PID: 23070 Comm: syz-executor4 Not tainted 4.20.0-next-20190103 #4 [ 1149.251367] gfs2: fsid=_: can't read superblock [ 1149.257041] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 1149.257046] Call Trace: [ 1149.257078] dump_stack+0x1db/0x2d0 [ 1149.257099] ? dump_stack_print_info.cold+0x20/0x20 [ 1149.257116] ? _raw_spin_unlock_irqrestore+0xa4/0xe0 [ 1149.257139] sysfs_warn_dup.cold+0x1c/0x31 [ 1149.257155] sysfs_create_dir_ns+0x2ce/0x330 [ 1149.257171] ? sysfs_create_mount_point+0xa0/0xa0 [ 1149.257185] ? do_raw_spin_trylock+0x270/0x270 [ 1149.257210] kobject_add_internal.cold+0x129/0x6d8 [ 1149.257233] ? kobj_ns_type_registered+0x60/0x60 [ 1149.277439] ? kfree_const+0x59/0x70 [ 1149.277454] ? rcu_read_lock_sched_held+0x110/0x130 [ 1149.277481] ? kfree+0x1fa/0x230 [ 1149.277510] ? kfree_const+0x5e/0x70 [ 1149.282564] gfs2: fsid=_: can't read superblock: -22 [ 1149.287621] kobject_init_and_add+0x101/0x160 [ 1149.287651] ? kobject_add_internal+0x4b0/0x4b0 [ 1149.287672] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 1149.287699] ? vsnprintf+0x368/0x1b10 [ 1149.287725] gfs2_sys_fs_add+0x210/0x500 [ 1149.296342] ? recover_store+0x1a0/0x1a0 [ 1149.296360] ? snprintf+0xbb/0xf0 [ 1149.296374] ? vsprintf+0x30/0x40 [ 1149.315449] ? set_blocksize+0x2bf/0x340 [ 1149.326391] sysfs: cannot create duplicate filename '/fs/gfs2/_' [ 1149.327506] ? memcpy+0x46/0x50 [ 1149.327527] fill_super+0x894/0x1990 [ 1149.327555] ? gfs2_online_uevent+0x2d0/0x2d0 [ 1149.391405] ? snprintf+0xbb/0xf0 [ 1149.394850] ? vsprintf+0x40/0x40 [ 1149.394870] ? ns_capable_common+0x141/0x170 [ 1149.394881] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 1149.394896] ? set_blocksize+0x2bf/0x340 [ 1149.407748] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 1149.407765] gfs2_mount+0x5db/0x6ee [ 1149.407780] ? fill_super+0x1990/0x1990 [ 1149.421289] ? vfs_parse_fs_string+0x1c5/0x2b0 [ 1149.429810] ? vfs_parse_fs_param+0x4b0/0x4b0 [ 1149.434303] ? fill_super+0x1990/0x1990 [ 1149.434326] legacy_get_tree+0xf2/0x200 [ 1149.434349] vfs_get_tree+0x123/0x450 [ 1149.434379] do_mount+0x1622/0x2fa0 [ 1149.434400] ? copy_mount_string+0x40/0x40 [ 1149.446100] ? kmem_cache_alloc_trace+0x354/0x760 [ 1149.446117] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 1149.446131] ? _copy_from_user+0xdd/0x150 [ 1149.446147] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 1149.458798] ? copy_mount_options+0x30e/0x440 [ 1149.458818] ksys_mount+0xdb/0x150 [ 1149.458838] __x64_sys_mount+0xbe/0x150 [ 1149.474042] do_syscall_64+0x1a3/0x800 [ 1149.474078] ? syscall_return_slowpath+0x5f0/0x5f0 [ 1149.474095] ? prepare_exit_to_usermode+0x232/0x3b0 [ 1149.474114] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 1149.474134] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 1149.509898] RIP: 0033:0x45a93a [ 1149.513100] Code: b8 a6 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 ed 8c fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 0f 83 ca 8c fb ff c3 66 0f 1f 84 00 00 00 00 00 [ 1149.532002] RSP: 002b:00007ff699fe9a88 EFLAGS: 00000206 ORIG_RAX: 00000000000000a5 [ 1149.539702] RAX: ffffffffffffffda RBX: 00007ff699fe9b30 RCX: 000000000045a93a [ 1149.546962] RDX: 00007ff699fe9ad0 RSI: 0000000020000200 RDI: 00007ff699fe9af0 [ 1149.554245] RBP: 0000000020000200 R08: 00007ff699fe9b30 R09: 00007ff699fe9ad0 [ 1149.561520] R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000003 [ 1149.568782] R13: 0000000000000000 R14: 00000000004db380 R15: 00000000ffffffff [ 1149.576137] CPU: 1 PID: 23076 Comm: syz-executor2 Not tainted 4.20.0-next-20190103 #4 [ 1149.584104] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 1149.584109] Call Trace: [ 1149.584125] dump_stack+0x1db/0x2d0 [ 1149.584143] ? dump_stack_print_info.cold+0x20/0x20 [ 1149.584159] ? _raw_spin_unlock_irqrestore+0xa4/0xe0 [ 1149.584180] sysfs_warn_dup.cold+0x1c/0x31 [ 1149.584195] sysfs_create_dir_ns+0x2ce/0x330 [ 1149.618419] ? sysfs_create_mount_point+0xa0/0xa0 [ 1149.623278] ? do_raw_spin_trylock+0x270/0x270 [ 1149.627902] kobject_add_internal.cold+0x129/0x6d8 [ 1149.632849] ? kobj_ns_type_registered+0x60/0x60 [ 1149.632862] ? kfree_const+0x59/0x70 [ 1149.632875] ? rcu_read_lock_sched_held+0x110/0x130 [ 1149.632888] ? kfree+0x1fa/0x230 [ 1149.632903] ? kfree_const+0x5e/0x70 [ 1149.632921] kobject_init_and_add+0x101/0x160 [ 1149.641384] ? kobject_add_internal+0x4b0/0x4b0 [ 1149.641404] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 1149.641417] ? vsnprintf+0x368/0x1b10 [ 1149.641442] gfs2_sys_fs_add+0x210/0x500 [ 1149.676016] ? recover_store+0x1a0/0x1a0 [ 1149.680101] ? snprintf+0xbb/0xf0 [ 1149.683552] ? vsprintf+0x30/0x40 [ 1149.686998] ? set_blocksize+0x2bf/0x340 [ 1149.691076] ? memcpy+0x46/0x50 [ 1149.694361] fill_super+0x894/0x1990 [ 1149.698097] ? gfs2_online_uevent+0x2d0/0x2d0 [ 1149.702598] ? snprintf+0xbb/0xf0 [ 1149.706053] ? vsprintf+0x40/0x40 [ 1149.709544] ? ns_capable_common+0x141/0x170 [ 1149.713949] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 1149.718959] ? set_blocksize+0x2bf/0x340 [ 1149.723019] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 1149.728553] gfs2_mount+0x5db/0x6ee [ 1149.732181] ? fill_super+0x1990/0x1990 [ 1149.736196] ? vfs_parse_fs_string+0x1c5/0x2b0 [ 1149.740771] ? vfs_parse_fs_param+0x4b0/0x4b0 [ 1149.745260] ? fill_super+0x1990/0x1990 [ 1149.749233] legacy_get_tree+0xf2/0x200 [ 1149.753207] vfs_get_tree+0x123/0x450 [ 1149.757008] do_mount+0x1622/0x2fa0 [ 1149.760637] ? copy_mount_string+0x40/0x40 [ 1149.764866] ? kmem_cache_alloc_trace+0x354/0x760 [ 1149.769714] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 1149.775248] ? copy_mount_options+0x30e/0x440 [ 1149.779747] ksys_mount+0xdb/0x150 [ 1149.783287] __x64_sys_mount+0xbe/0x150 [ 1149.787255] do_syscall_64+0x1a3/0x800 [ 1149.791137] ? syscall_return_slowpath+0x5f0/0x5f0 [ 1149.796071] ? prepare_exit_to_usermode+0x232/0x3b0 [ 1149.801092] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 1149.805935] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 1149.811117] RIP: 0033:0x45a93a [ 1149.814300] Code: b8 a6 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 ed 8c fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 0f 83 ca 8c fb ff c3 66 0f 1f 84 00 00 00 00 00 [ 1149.833190] RSP: 002b:00007f0afecf4a88 EFLAGS: 00000206 ORIG_RAX: 00000000000000a5 [ 1149.840886] RAX: ffffffffffffffda RBX: 00007f0afecf4b30 RCX: 000000000045a93a [ 1149.848146] RDX: 00007f0afecf4ad0 RSI: 0000000020000200 RDI: 00007f0afecf4af0 [ 1149.855429] RBP: 0000000020000200 R08: 00007f0afecf4b30 R09: 00007f0afecf4ad0 [ 1149.862688] R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000003 03:48:09 executing program 5: syz_mount_image$gfs2(&(0x7f0000000140)='gfs2\x00', &(0x7f0000000200)='./file0\x00', 0x0, 0x0, 0x0, 0x0, &(0x7f00000003c0)={[{@locktable={'locktable', 0x3d, '/'}}, {@lockproto_nolock='lockproto=lock_nolock'}]}) socketpair$unix(0x1, 0x1, 0x0, &(0x7f0000000180)) 03:48:09 executing program 1: r0 = openat$kvm(0xffffffffffffff9c, &(0x7f0000000140)='/dev/kvm\x00', 0x0, 0x0) r1 = openat$dlm_plock(0xffffffffffffff9c, &(0x7f0000000000)='/dev/dlm_plock\x00', 0x220080, 0x0) ioctl$KDGKBDIACR(r1, 0x4b4a, &(0x7f0000000180)=""/148) r2 = ioctl$KVM_CREATE_VM(r0, 0xae01, 0x0) r3 = ioctl$KVM_CREATE_VCPU(r2, 0xae41, 0x0) ioctl$KVM_SET_USER_MEMORY_REGION(r2, 0x4020ae46, &(0x7f0000000400)={0x0, 0x3, 0x0, 0x2000, &(0x7f0000000000/0x2000)=nil}) syz_kvm_setup_cpu$x86(r2, 0xffffffffffffffff, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x0, 0x0, 0xfffffffffffffe78) sendmmsg$unix(0xffffffffffffffff, &(0x7f0000002780)=[{0x0, 0x0, &(0x7f0000001d00)=[{&(0x7f0000000bc0)="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", 0x3c5}], 0x1}], 0x1, 0x0) ioctl$KVM_REGISTER_COALESCED_MMIO(r2, 0x4010ae67, &(0x7f00000000c0)={0x0, 0x15200}) syz_kvm_setup_cpu$x86(0xffffffffffffffff, r3, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x8, 0x0, 0x0) ioctl$KVM_RUN(r3, 0xae80, 0x0) [ 1149.869946] R13: 0000000000000000 R14: 00000000004db380 R15: 00000000ffffffff 03:48:09 executing program 0: socketpair$unix(0x1, 0x1, 0x0, &(0x7f0000000440)={0xffffffffffffffff, 0xffffffffffffffff}) ioctl$PERF_EVENT_IOC_ENABLE(r0, 0x8912, 0x400200) r1 = syz_open_dev$swradio(&(0x7f0000000180)='/dev/swradio#\x00', 0x1, 0x2) write$apparmor_current(r1, &(0x7f0000000200)=@profile={'permprofile ', '^cgroup\x00'}, 0x14) r2 = openat$kvm(0xffffffffffffff9c, &(0x7f00000000c0)='/dev/kvm\x00', 0x0, 0x0) openat$dlm_monitor(0xffffffffffffff9c, &(0x7f0000000340)='/dev/dlm-monitor\x00', 0x0, 0x0) r3 = ioctl$KVM_CREATE_VM(r2, 0xae01, 0x0) r4 = ioctl$KVM_CREATE_VCPU(r3, 0xae41, 0x0) syz_kvm_setup_cpu$x86(r3, 0xffffffffffffffff, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x0, 0x0, 0x0) syz_kvm_setup_cpu$x86(0xffffffffffffffff, r4, &(0x7f0000000000/0x18000)=nil, &(0x7f00000001c0)=[@text64={0x40, &(0x7f0000000040)="b9800000c00f3235001000000f30f24c0f2c49e8426dc4027d3493b80800003626660f7e676d660f1678b06cc403f9dfbeb70000000bc7442400f5000000c744240284d178bcff1c24f2f347dbe1", 0x4e}], 0x1, 0x48, 0x0, 0x0) pipe2(&(0x7f0000000000)={0xffffffffffffffff, 0xffffffffffffffff}, 0x0) ioctl$KVM_RUN(r4, 0xae80, 0x0) setsockopt$nfc_llcp_NFC_LLCP_MIUX(r5, 0x118, 0x1, &(0x7f0000000100)=0xfffffffffffeffff, 0x4) ioctl$DRM_IOCTL_INFO_BUFS(r6, 0xc0106418, &(0x7f0000000140)={0x6, 0xb8ac, 0xb713, 0xc7, 0x8, 0x81}) [ 1149.900849] kobject_add_internal failed for _ with -EEXIST, don't try to register things with the same name in the same directory. [ 1149.918582] gfs2: fsid=_: error -17 adding sysfs files [ 1149.928837] kobject_add_internal failed for _ with -EEXIST, don't try to register things with the same name in the same directory. [ 1149.942080] gfs2: fsid=_: error -17 adding sysfs files 03:48:09 executing program 3: syz_mount_image$gfs2(&(0x7f0000000140)='gfs2\x00', &(0x7f0000000200)='./file0\x00', 0xb126010000000000, 0x0, 0x0, 0x0, &(0x7f00000003c0)={[{@locktable={'locktable', 0x3d, '/'}}, {@lockproto_nolock='lockproto=lock_nolock'}]}) [ 1150.092287] gfs2: fsid=_: Trying to join cluster "lock_nolock", "_" [ 1150.099999] gfs2: fsid=_: Now mounting FS... [ 1150.106013] gfs2: not a GFS2 filesystem [ 1150.110176] gfs2: fsid=_: can't read superblock 03:48:09 executing program 4: syz_mount_image$gfs2(&(0x7f0000000140)='gfs2\x00', &(0x7f0000000200)='./file0\x00', 0x16000000, 0x0, 0x0, 0x0, &(0x7f00000003c0)={[{@locktable={'locktable', 0x3d, '/'}}, {@lockproto_nolock='lockproto=lock_nolock'}]}) socketpair$unix(0x1, 0x1, 0x0, &(0x7f0000000180)) [ 1150.137778] gfs2: fsid=_: can't read superblock: -22 03:48:09 executing program 0: r0 = openat$cachefiles(0xffffffffffffff9c, &(0x7f0000000100)='/dev/cachefiles\x00', 0x400000, 0x0) ioctl$KVM_ASSIGN_SET_MSIX_ENTRY(r0, 0x4010ae74, &(0x7f0000000140)={0x101, 0x6, 0x1000}) socketpair$unix(0x1, 0x1, 0x0, &(0x7f0000000440)={0xffffffffffffffff, 0xffffffffffffffff}) ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200) r2 = openat$kvm(0xffffffffffffff9c, &(0x7f00000000c0)='/dev/kvm\x00', 0x0, 0x0) openat$dlm_monitor(0xffffffffffffff9c, &(0x7f0000000340)='/dev/dlm-monitor\x00', 0x0, 0x0) r3 = ioctl$KVM_CREATE_VM(r2, 0xae01, 0x0) r4 = ioctl$KVM_CREATE_VCPU(r3, 0xae41, 0x0) syz_kvm_setup_cpu$x86(r3, 0xffffffffffffffff, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x0, 0x0, 0x0) syz_kvm_setup_cpu$x86(0xffffffffffffffff, r4, &(0x7f0000000000/0x18000)=nil, &(0x7f00000001c0)=[@text64={0x40, &(0x7f0000000040)="b9800000c00f3235001000000f30f24c0f2c49e8426dc4027d3493b80800003626660f7e676d660f1678b06cc403f9dfbeb70000000bc7442400f5000000c744240284d178bcff1c24f2f347dbe1", 0x4e}], 0x1, 0x48, 0x0, 0x0) pipe2(&(0x7f0000000000), 0x0) ioctl$KVM_RUN(r4, 0xae80, 0x0) 03:48:09 executing program 2 (fault-call:6 fault-nth:0): r0 = socket$inet(0x2, 0x4000000000000001, 0x0) setsockopt$inet_tcp_int(r0, 0x6, 0x80000000000002, &(0x7f0000000040)=0x74, 0x4) bind$inet(r0, &(0x7f0000000180)={0x2, 0x4e23, @multicast1}, 0x10) sendto$inet(r0, 0x0, 0x0, 0x200007fd, &(0x7f0000e68000)={0x2, 0x4e23, @local}, 0x10) write$binfmt_elf64(r0, &(0x7f00000012c0)=ANY=[@ANYBLOB="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"], 0x209) mmap(&(0x7f0000000000/0xb36000)=nil, 0xb36000, 0x3, 0x8031, 0xffffffffffffffff, 0x0) sendmmsg$inet_sctp(r0, &(0x7f0000002600)=[{0x0, 0x0, &(0x7f0000000240)=[{&(0x7f0000000380)="d4", 0x1}], 0x1}], 0x1, 0x0) 03:48:10 executing program 1: r0 = openat$kvm(0xffffffffffffff9c, &(0x7f0000000140)='/dev/kvm\x00', 0x0, 0x0) r1 = ioctl$KVM_CREATE_VM(r0, 0xae01, 0x0) r2 = ioctl$KVM_CREATE_VCPU(r1, 0xae41, 0x0) ioctl$KVM_SET_USER_MEMORY_REGION(r1, 0x4020ae46, &(0x7f0000000400)={0x0, 0x3, 0x0, 0x2000, &(0x7f0000000000/0x2000)=nil}) ioctl$KVM_CREATE_VCPU(r1, 0xae41, 0x0) clock_gettime(0x6, &(0x7f0000000100)) syz_kvm_setup_cpu$x86(r1, 0xffffffffffffffff, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x0, 0x0, 0xfffffffffffffe78) sendmmsg$unix(0xffffffffffffffff, &(0x7f0000002780)=[{0x0, 0x0, &(0x7f0000001d00)=[{&(0x7f0000000bc0)="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", 0x3c5}], 0x1}], 0x1, 0x0) ioctl$KVM_REGISTER_COALESCED_MMIO(r1, 0x4010ae67, &(0x7f00000000c0)={0x0, 0x15200}) setxattr$trusted_overlay_redirect(&(0x7f0000000180)='./file0\x00', &(0x7f00000001c0)='trusted.overlay.redirect\x00', &(0x7f0000000200)='./file0\x00', 0x8, 0x2) syz_kvm_setup_cpu$x86(0xffffffffffffffff, r2, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x8, 0x0, 0x0) ioctl$KVM_RUN(r2, 0xae80, 0x0) r3 = socket$packet(0x11, 0x3, 0x300) getpeername$packet(0xffffffffffffff9c, &(0x7f0000000000)={0x11, 0x0, 0x0}, &(0x7f0000000040)=0x14) setsockopt$packet_add_memb(r3, 0x107, 0x1, &(0x7f0000000080)={r4, 0x1, 0x6, @random="ed00787018bf"}, 0x10) [ 1150.245439] sysfs: cannot create duplicate filename '/fs/gfs2/_' [ 1150.282720] CPU: 0 PID: 23104 Comm: syz-executor3 Not tainted 4.20.0-next-20190103 #4 [ 1150.290730] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 1150.300096] Call Trace: [ 1150.302691] dump_stack+0x1db/0x2d0 [ 1150.306338] ? dump_stack_print_info.cold+0x20/0x20 [ 1150.311366] ? _raw_spin_unlock_irqrestore+0xa4/0xe0 [ 1150.316473] sysfs_warn_dup.cold+0x1c/0x31 [ 1150.320714] sysfs_create_dir_ns+0x2ce/0x330 [ 1150.325147] ? sysfs_create_mount_point+0xa0/0xa0 [ 1150.329986] ? do_raw_spin_trylock+0x270/0x270 [ 1150.330014] kobject_add_internal.cold+0x129/0x6d8 [ 1150.330032] ? kobj_ns_type_registered+0x60/0x60 [ 1150.339546] ? kfree_const+0x59/0x70 [ 1150.339562] ? rcu_read_lock_sched_held+0x110/0x130 [ 1150.339577] ? kfree+0x1fa/0x230 [ 1150.339594] ? kfree_const+0x5e/0x70 [ 1150.339615] kobject_init_and_add+0x101/0x160 [ 1150.348080] ? kobject_add_internal+0x4b0/0x4b0 [ 1150.348100] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 1150.348113] ? vsnprintf+0x368/0x1b10 [ 1150.348137] gfs2_sys_fs_add+0x210/0x500 [ 1150.356485] ? recover_store+0x1a0/0x1a0 [ 1150.356503] ? snprintf+0xbb/0xf0 [ 1150.356517] ? vsprintf+0x30/0x40 [ 1150.356533] ? set_blocksize+0x2bf/0x340 [ 1150.356550] ? memcpy+0x46/0x50 [ 1150.364733] fill_super+0x894/0x1990 [ 1150.364770] ? gfs2_online_uevent+0x2d0/0x2d0 [ 1150.364819] ? snprintf+0xbb/0xf0 [ 1150.364832] ? vsprintf+0x40/0x40 [ 1150.364852] ? ns_capable_common+0x141/0x170 [ 1150.364864] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 1150.364878] ? set_blocksize+0x2bf/0x340 [ 1150.375118] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 1150.375137] gfs2_mount+0x5db/0x6ee [ 1150.375167] ? fill_super+0x1990/0x1990 [ 1150.375220] ? vfs_parse_fs_string+0x1c5/0x2b0 [ 1150.375237] ? vfs_parse_fs_param+0x4b0/0x4b0 [ 1150.452153] ? fill_super+0x1990/0x1990 [ 1150.456125] legacy_get_tree+0xf2/0x200 [ 1150.460109] vfs_get_tree+0x123/0x450 [ 1150.463933] do_mount+0x1622/0x2fa0 [ 1150.467558] ? calibrate_delay.cold+0x47b/0x539 [ 1150.472229] ? copy_mount_string+0x40/0x40 [ 1150.476463] ? retint_kernel+0x2d/0x2d [ 1150.480385] ? copy_mount_options+0x242/0x440 [ 1150.484883] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 1150.490418] ? copy_mount_options+0x30e/0x440 [ 1150.494914] ksys_mount+0xdb/0x150 [ 1150.498457] __x64_sys_mount+0xbe/0x150 [ 1150.502454] do_syscall_64+0x1a3/0x800 [ 1150.506351] ? syscall_return_slowpath+0x5f0/0x5f0 [ 1150.511278] ? prepare_exit_to_usermode+0x232/0x3b0 [ 1150.516300] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 1150.521151] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 1150.526457] RIP: 0033:0x45a93a [ 1150.529672] Code: b8 a6 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 ed 8c fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 0f 83 ca 8c fb ff c3 66 0f 1f 84 00 00 00 00 00 [ 1150.548564] RSP: 002b:00007fdbfe5d2a88 EFLAGS: 00000206 ORIG_RAX: 00000000000000a5 [ 1150.556264] RAX: ffffffffffffffda RBX: 00007fdbfe5d2b30 RCX: 000000000045a93a [ 1150.563556] RDX: 00007fdbfe5d2ad0 RSI: 0000000020000200 RDI: 00007fdbfe5d2af0 [ 1150.570826] RBP: 0000000020000200 R08: 00007fdbfe5d2b30 R09: 00007fdbfe5d2ad0 [ 1150.578087] R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000003 [ 1150.585371] R13: 0000000000000000 R14: 00000000004db380 R15: 00000000ffffffff [ 1150.603012] protocol 88fb is buggy, dev hsr_slave_0 [ 1150.608120] protocol 88fb is buggy, dev hsr_slave_1 [ 1150.658344] gfs2: fsid=_: Trying to join cluster "lock_nolock", "_" 03:48:10 executing program 5 (fault-call:1 fault-nth:0): r0 = socket$inet6(0xa, 0x2, 0x0) connect$inet6(r0, &(0x7f0000000180)={0xa, 0x0, 0x0, @local, 0x4}, 0x1c) [ 1150.709489] gfs2: fsid=_: Now mounting FS... [ 1150.727696] gfs2: not a GFS2 filesystem [ 1150.731936] gfs2: fsid=_: can't read superblock [ 1150.751861] gfs2: fsid=_: can't read superblock: -22 [ 1150.850650] FAULT_INJECTION: forcing a failure. [ 1150.850650] name failslab, interval 1, probability 0, space 0, times 0 [ 1150.861934] CPU: 1 PID: 23127 Comm: syz-executor5 Not tainted 4.20.0-next-20190103 #4 [ 1150.869899] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 1150.869932] Call Trace: [ 1150.869955] dump_stack+0x1db/0x2d0 [ 1150.869977] ? dump_stack_print_info.cold+0x20/0x20 [ 1150.870078] ? ip6_route_redirect.isra.0+0x2a0/0x2a0 [ 1150.870097] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 1150.890628] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 1150.890653] should_fail.cold+0xa/0x14 [ 1150.890671] ? fault_create_debugfs_attr+0x1e0/0x1e0 [ 1150.901295] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 1150.901311] ? __rt6_find_exception_rcu+0x33b/0x4f0 [ 1150.901329] ? rt6_exception_hash+0x7e0/0x7e0 [ 1150.910755] __should_failslab+0x121/0x190 [ 1150.910773] should_failslab+0x9/0x14 [ 1150.910787] kmem_cache_alloc+0x47/0x710 [ 1150.921404] ? kasan_check_read+0x11/0x20 [ 1150.921422] ? rcu_dynticks_curr_cpu_in_eqs+0xa2/0x170 [ 1150.921501] dst_alloc+0x10e/0x1d0 [ 1150.930933] ip6_dst_alloc+0x34/0xa0 [ 1150.930950] ip6_pol_route+0x978/0x18d0 [ 1150.930969] ? ip6_pol_route_lookup+0x1020/0x1020 [ 1150.938982] ? __lock_acquire+0x572/0x4a10 [ 1150.946532] kobject_add_internal failed for _ with -EEXIST, don't try to register things with the same name in the same directory. [ 1150.947166] ? check_noncircular+0x20/0x20 [ 1150.947190] ? add_lock_to_list.isra.0+0x450/0x450 [ 1150.947216] ? l3mdev_link_scope_lookup+0x23d/0x360 03:48:10 executing program 0: socketpair$unix(0x1, 0x1, 0x0, &(0x7f0000000440)={0xffffffffffffffff, 0xffffffffffffffff}) ioctl$PERF_EVENT_IOC_ENABLE(r0, 0x8912, 0x400200) r1 = openat$kvm(0xffffffffffffff9c, &(0x7f00000000c0)='/dev/kvm\x00', 0x0, 0x0) sync() openat$dlm_monitor(0xffffffffffffff9c, &(0x7f0000000340)='/dev/dlm-monitor\x00', 0x0, 0x0) r2 = ioctl$KVM_CREATE_VM(r1, 0xae01, 0x0) r3 = ioctl$KVM_CREATE_VCPU(r2, 0xae41, 0x0) syz_kvm_setup_cpu$x86(r2, 0xffffffffffffffff, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x0, 0x0, 0x0) syz_kvm_setup_cpu$x86(0xffffffffffffffff, r3, &(0x7f0000000000/0x18000)=nil, &(0x7f00000001c0)=[@text64={0x40, &(0x7f0000000040)="b9800000c00f3235001000000f30f24c0f2c49e8426dc4027d3493b80800003626660f7e676d660f1678b06cc403f9dfbeb70000000bc7442400f5000000c744240284d178bcff1c24f2f347dbe1", 0x4e}], 0x1, 0x48, 0x0, 0x0) pipe2(&(0x7f0000000000), 0x0) ioctl$KVM_RUN(r3, 0xae80, 0x0) [ 1150.955423] gfs2: fsid=_: error -17 adding sysfs files [ 1150.956001] ip6_pol_route_output+0x54/0x70 [ 1151.008346] fib6_rule_lookup+0x277/0x870 [ 1151.012503] ? ip6_pol_route_input+0x80/0x80 [ 1151.016918] ? fib6_lookup+0x4e0/0x4e0 [ 1151.020833] ? rcu_dynticks_curr_cpu_in_eqs+0xa2/0x170 [ 1151.026125] ? rcu_read_unlock_special+0x380/0x380 [ 1151.031112] ip6_route_output_flags+0x2c4/0x350 [ 1151.035848] ip6_dst_lookup_tail+0xe18/0x1d50 [ 1151.040355] ? mark_held_locks+0xb1/0x100 [ 1151.044527] ? print_usage_bug+0xd0/0xd0 [ 1151.048620] ? ip6_append_data+0x2e0/0x2e0 [ 1151.052868] ? add_lock_to_list.isra.0+0x450/0x450 [ 1151.057852] ? ip6_datagram_dst_update+0x744/0xfb0 [ 1151.062791] ? find_held_lock+0x35/0x120 [ 1151.066859] ? ip6_datagram_dst_update+0x744/0xfb0 [ 1151.066876] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 1151.066900] ip6_dst_lookup_flow+0xca/0x270 [ 1151.066916] ? ip6_dst_lookup+0x70/0x70 [ 1151.066951] ip6_datagram_dst_update+0x779/0xfb0 [ 1151.077420] ? ip6_datagram_send_ctl+0x1b70/0x1b70 [ 1151.077433] ? print_usage_bug+0xd0/0xd0 [ 1151.077444] ? find_held_lock+0x35/0x120 [ 1151.077462] ? release_sock+0x1e8/0x2b0 [ 1151.077477] ? __local_bh_enable_ip+0x15a/0x270 [ 1151.077505] ? __local_bh_enable_ip+0x15a/0x270 [ 1151.077519] ? __local_bh_enable_ip+0x15a/0x270 [ 1151.077539] __ip6_datagram_connect+0x5df/0x1440 [ 1151.077554] ? __ip6_datagram_connect+0x5df/0x1440 [ 1151.077576] ? ip6_datagram_release_cb+0x620/0x620 [ 1151.077592] ? lock_sock_nested+0x9a/0x120 [ 1151.140367] ? __local_bh_enable_ip+0x15a/0x270 [ 1151.145077] ip6_datagram_connect+0x30/0x50 [ 1151.149405] ? ip6_datagram_connect+0x30/0x50 [ 1151.153928] inet_dgram_connect+0x150/0x2e0 [ 1151.158265] __sys_connect+0x357/0x490 [ 1151.162167] ? __ia32_sys_accept+0xb0/0xb0 [ 1151.166425] ? do_syscall_64+0x8c/0x800 [ 1151.170407] ? do_syscall_64+0x8c/0x800 [ 1151.174435] ? lockdep_hardirqs_on+0x415/0x5d0 [ 1151.179036] ? trace_hardirqs_on+0xbd/0x310 [ 1151.183380] ? __ia32_sys_read+0xb0/0xb0 [ 1151.187448] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 1151.192828] ? trace_hardirqs_off_caller+0x300/0x300 [ 1151.197942] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 1151.202710] __x64_sys_connect+0x73/0xb0 [ 1151.206784] do_syscall_64+0x1a3/0x800 [ 1151.210695] ? syscall_return_slowpath+0x5f0/0x5f0 [ 1151.215645] ? prepare_exit_to_usermode+0x232/0x3b0 [ 1151.220703] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 1151.225562] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 1151.230754] RIP: 0033:0x457ec9 [ 1151.233952] Code: 6d b7 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 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 3b b7 fb ff c3 66 2e 0f 1f 84 00 00 00 00 [ 1151.252876] RSP: 002b:00007fceb1aa7c78 EFLAGS: 00000246 ORIG_RAX: 000000000000002a [ 1151.260612] RAX: ffffffffffffffda RBX: 00007fceb1aa7c90 RCX: 0000000000457ec9 [ 1151.267882] RDX: 000000000000001c RSI: 0000000020000180 RDI: 0000000000000003 [ 1151.275151] RBP: 000000000073bf00 R08: 0000000000000000 R09: 0000000000000000 [ 1151.282424] R10: 0000000000000000 R11: 0000000000000246 R12: 00007fceb1aa86d4 [ 1151.289707] R13: 00000000004be317 R14: 00000000004ce570 R15: 0000000000000004 03:48:11 executing program 1: r0 = openat$kvm(0xffffffffffffff9c, &(0x7f0000000140)='/dev/kvm\x00', 0x0, 0x0) r1 = ioctl$KVM_CREATE_VM(r0, 0xae01, 0x0) r2 = ioctl$KVM_CREATE_VCPU(r1, 0xae41, 0x0) sync_file_range(r1, 0x0, 0x0, 0x4) ioctl$KVM_SET_USER_MEMORY_REGION(r1, 0x4020ae46, &(0x7f0000000400)={0x0, 0x3, 0x0, 0x2000, &(0x7f0000000000/0x2000)=nil}) syz_kvm_setup_cpu$x86(r1, r0, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x0, 0x0, 0xfffffffffffffdd9) sendmmsg$unix(0xffffffffffffffff, &(0x7f0000002780)=[{0x0, 0x0, &(0x7f0000001d00)=[{&(0x7f0000000bc0)="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", 0x3c5}], 0x1}], 0x1, 0x0) ioctl$KVM_REGISTER_COALESCED_MMIO(r1, 0x4010ae67, &(0x7f00000000c0)={0x0, 0x15200}) syz_kvm_setup_cpu$x86(0xffffffffffffffff, r2, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x8, 0x0, 0x0) ioctl$KVM_RUN(r2, 0xae80, 0x0) 03:48:11 executing program 4: syz_mount_image$gfs2(&(0x7f0000000140)='gfs2\x00', &(0x7f0000000200)='./file0\x00', 0xffffffff88400000, 0x0, 0x0, 0x0, &(0x7f00000003c0)={[{@locktable={'locktable', 0x3d, '/'}}, {@lockproto_nolock='lockproto=lock_nolock'}]}) socketpair$unix(0x1, 0x1, 0x0, &(0x7f0000000180)) 03:48:11 executing program 5 (fault-call:1 fault-nth:1): r0 = socket$inet6(0xa, 0x2, 0x0) connect$inet6(r0, &(0x7f0000000180)={0xa, 0x0, 0x0, @local, 0x4}, 0x1c) 03:48:11 executing program 3: syz_mount_image$gfs2(&(0x7f0000000140)='gfs2\x00', &(0x7f0000000200)='./file0\x00', 0xb00000000000000, 0x0, 0x0, 0x0, &(0x7f00000003c0)={[{@locktable={'locktable', 0x3d, '/'}}, {@lockproto_nolock='lockproto=lock_nolock'}]}) 03:48:11 executing program 5: r0 = socket$inet6(0xa, 0x2, 0x0) connect$inet6(r0, &(0x7f0000000180)={0xa, 0x0, 0x0, @local, 0x4}, 0x1c) 03:48:11 executing program 3: syz_mount_image$gfs2(&(0x7f0000000140)='gfs2\x00', &(0x7f0000000200)='./file0\x00', 0x900000000000000, 0x0, 0x0, 0x0, &(0x7f00000003c0)={[{@locktable={'locktable', 0x3d, '/'}}, {@lockproto_nolock='lockproto=lock_nolock'}]}) 03:48:11 executing program 2: r0 = socket$inet(0x2, 0x4000000000000001, 0x0) setsockopt$inet_tcp_int(r0, 0x6, 0x80000000000002, &(0x7f0000000040)=0x74, 0x4) bind$inet(r0, &(0x7f0000000180)={0x2, 0x4e23, @multicast1}, 0x10) sendto$inet(r0, 0x0, 0x0, 0x200007fd, &(0x7f0000e68000)={0x2, 0x4e23, @local}, 0x10) write$binfmt_elf64(r0, &(0x7f00000012c0)=ANY=[@ANYBLOB="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"], 0x209) mmap(&(0x7f0000000000/0xb36000)=nil, 0xb36000, 0x3, 0x8031, 0xffffffffffffffff, 0x0) sendmmsg$inet_sctp(r0, &(0x7f0000002600)=[{0x0, 0x0, &(0x7f0000000240)=[{&(0x7f0000000380)="d4", 0x1}], 0x1}], 0x1, 0x0) [ 1151.577913] gfs2: fsid=_: Trying to join cluster "lock_nolock", "_" [ 1151.597549] gfs2: fsid=_: Now mounting FS... [ 1151.606249] gfs2: not a GFS2 filesystem [ 1151.610519] gfs2: fsid=_: can't read superblock [ 1151.626657] gfs2: fsid=_: can't read superblock: -22 03:48:11 executing program 1: r0 = openat$kvm(0xffffffffffffff9c, &(0x7f0000000000)='/dev/kvm\x00', 0xfffffffffffffffc, 0x0) r1 = openat$vfio(0xffffffffffffff9c, &(0x7f0000000040)='/dev/vfio/vfio\x00', 0x0, 0x0) ioctl$PIO_UNIMAP(r1, 0x4b67, &(0x7f0000000100)={0x3, &(0x7f0000000080)=[{0xa3, 0xfffffffffffffffd}, {0x8, 0x1f}, {0x3}]}) r2 = ioctl$KVM_CREATE_VM(r0, 0xae01, 0x0) r3 = ioctl$KVM_CREATE_VCPU(r2, 0xae41, 0x0) ioctl$KVM_SET_USER_MEMORY_REGION(r2, 0x4020ae46, &(0x7f0000000400)={0x0, 0x3, 0x0, 0x2000, &(0x7f0000000000/0x2000)=nil}) syz_kvm_setup_cpu$x86(r2, 0xffffffffffffffff, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x0, 0x0, 0xfffffffffffffe78) sendmmsg$unix(0xffffffffffffffff, &(0x7f0000002780)=[{0x0, 0x0, &(0x7f0000001d00)=[{&(0x7f0000000bc0)="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", 0x3c5}], 0x1}], 0x1, 0x0) ioctl$KVM_REGISTER_COALESCED_MMIO(r2, 0x4010ae67, &(0x7f00000000c0)={0x0, 0x15200}) syz_kvm_setup_cpu$x86(0xffffffffffffffff, r3, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x8, 0x0, 0x0) ioctl$KVM_RUN(r3, 0xae80, 0x0) 03:48:11 executing program 5: r0 = socket$inet6(0xa, 0x2, 0x0) connect$inet6(r0, &(0x7f0000000180)={0x2, 0x0, 0x0, @local, 0x4}, 0x1c) [ 1151.728618] sysfs: cannot create duplicate filename '/fs/gfs2/_' [ 1151.804003] CPU: 0 PID: 23160 Comm: syz-executor3 Not tainted 4.20.0-next-20190103 #4 [ 1151.811993] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 1151.821357] Call Trace: [ 1151.823970] dump_stack+0x1db/0x2d0 [ 1151.827613] ? dump_stack_print_info.cold+0x20/0x20 [ 1151.832641] ? _raw_spin_unlock_irqrestore+0xa4/0xe0 [ 1151.837755] sysfs_warn_dup.cold+0x1c/0x31 [ 1151.842027] sysfs_create_dir_ns+0x2ce/0x330 [ 1151.846485] ? sysfs_create_mount_point+0xa0/0xa0 [ 1151.851335] ? do_raw_spin_trylock+0x270/0x270 [ 1151.855944] kobject_add_internal.cold+0x129/0x6d8 [ 1151.860911] ? kobj_ns_type_registered+0x60/0x60 [ 1151.865663] ? kfree_const+0x59/0x70 [ 1151.869374] ? rcu_read_lock_sched_held+0x110/0x130 [ 1151.874411] ? kfree+0x1fa/0x230 [ 1151.877781] ? kfree_const+0x5e/0x70 [ 1151.881512] kobject_init_and_add+0x101/0x160 [ 1151.886031] ? kobject_add_internal+0x4b0/0x4b0 [ 1151.890727] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 1151.896267] ? vsnprintf+0x368/0x1b10 [ 1151.900107] gfs2_sys_fs_add+0x210/0x500 [ 1151.904177] ? recover_store+0x1a0/0x1a0 [ 1151.908239] ? snprintf+0xbb/0xf0 [ 1151.911706] ? vsprintf+0x30/0x40 [ 1151.915174] ? set_blocksize+0x2bf/0x340 [ 1151.919258] ? memcpy+0x46/0x50 [ 1151.919279] fill_super+0x894/0x1990 [ 1151.919303] ? gfs2_online_uevent+0x2d0/0x2d0 [ 1151.926273] ? snprintf+0xbb/0xf0 [ 1151.926298] ? vsprintf+0x40/0x40 [ 1151.926318] ? ns_capable_common+0x141/0x170 [ 1151.942080] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 1151.947103] ? set_blocksize+0x2bf/0x340 [ 1151.951180] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 1151.956731] gfs2_mount+0x5db/0x6ee [ 1151.960368] ? fill_super+0x1990/0x1990 [ 1151.964380] ? vfs_parse_fs_string+0x1c5/0x2b0 [ 1151.968970] ? vfs_parse_fs_param+0x4b0/0x4b0 [ 1151.973472] ? fill_super+0x1990/0x1990 [ 1151.977450] legacy_get_tree+0xf2/0x200 [ 1151.981465] vfs_get_tree+0x123/0x450 [ 1151.985281] do_mount+0x1622/0x2fa0 [ 1151.988927] ? copy_mount_string+0x40/0x40 [ 1151.993170] ? kmem_cache_alloc_trace+0x354/0x760 [ 1151.998052] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 1152.003607] ? copy_mount_options+0x30e/0x440 [ 1152.008145] ksys_mount+0xdb/0x150 [ 1152.011691] __x64_sys_mount+0xbe/0x150 [ 1152.015678] do_syscall_64+0x1a3/0x800 [ 1152.019575] ? syscall_return_slowpath+0x5f0/0x5f0 [ 1152.024515] ? prepare_exit_to_usermode+0x232/0x3b0 [ 1152.029543] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 1152.034404] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 1152.039613] RIP: 0033:0x45a93a [ 1152.042825] Code: b8 a6 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 ed 8c fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 0f 83 ca 8c fb ff c3 66 0f 1f 84 00 00 00 00 00 [ 1152.061726] RSP: 002b:00007fdbfe5d2a88 EFLAGS: 00000206 ORIG_RAX: 00000000000000a5 [ 1152.069448] RAX: ffffffffffffffda RBX: 00007fdbfe5d2b30 RCX: 000000000045a93a [ 1152.076731] RDX: 00007fdbfe5d2ad0 RSI: 0000000020000200 RDI: 00007fdbfe5d2af0 [ 1152.084017] RBP: 0000000020000200 R08: 00007fdbfe5d2b30 R09: 00007fdbfe5d2ad0 [ 1152.091293] R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000003 03:48:11 executing program 1: r0 = openat$kvm(0xffffffffffffff9c, &(0x7f0000000140)='/dev/kvm\x00', 0x0, 0x0) r1 = ioctl$KVM_CREATE_VM(r0, 0xae01, 0x0) r2 = ioctl$KVM_CREATE_VCPU(r1, 0xae41, 0x0) ioctl$KVM_SET_USER_MEMORY_REGION(r1, 0x4020ae46, &(0x7f0000000400)={0x0, 0x3, 0x0, 0x2000, &(0x7f0000000000/0x2000)=nil}) r3 = creat(&(0x7f0000000000)='./file0\x00', 0xe05d7559a6e50f26) setsockopt$inet6_tcp_TCP_MD5SIG(r3, 0x6, 0xe, &(0x7f0000000180)={@in={{0x2, 0x4e22, @empty}}, 0x0, 0xaf, 0x0, "0fd12e3ccca68ead044b8e4fb1d8e0ad98d12585e8d3fd0e1a707139031d758bb02c91ae2189e1988a2c6eb8b28a1c719b63aba3698d26a5647134221cf6e9e589ce94d82917a39fb450369743e5f61e"}, 0xd8) syz_kvm_setup_cpu$x86(r1, 0xffffffffffffffff, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x0, 0x0, 0xfffffffffffffe78) sendmmsg$unix(0xffffffffffffffff, &(0x7f0000002780)=[{0x0, 0x0, &(0x7f0000001d00)=[{&(0x7f0000000bc0)="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", 0x3c5}], 0x1}], 0x1, 0x0) ioctl$KVM_REGISTER_COALESCED_MMIO(r1, 0x4010ae67, &(0x7f00000000c0)={0x0, 0x15200}) syz_kvm_setup_cpu$x86(0xffffffffffffffff, r2, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x8, 0x0, 0x0) ioctl$KVM_RUN(r2, 0xae80, 0x0) 03:48:11 executing program 5: r0 = socket$inet6(0xa, 0x2, 0x0) connect$inet6(r0, &(0x7f0000000180)={0x4, 0x0, 0x0, @local, 0x4}, 0x1c) 03:48:11 executing program 0: socketpair$unix(0x1, 0x1, 0x0, &(0x7f0000000440)={0xffffffffffffffff, 0xffffffffffffffff}) ioctl$PERF_EVENT_IOC_ENABLE(r0, 0x8912, 0x400200) r1 = openat$dlm_monitor(0xffffffffffffff9c, &(0x7f0000000340)='/dev/dlm-monitor\x00', 0x0, 0x0) r2 = ioctl$KVM_CREATE_VM(0xffffffffffffffff, 0xae01, 0x0) r3 = ioctl$KVM_CREATE_VCPU(r2, 0xae41, 0x0) syz_kvm_setup_cpu$x86(r2, 0xffffffffffffffff, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x0, 0x0, 0x0) syz_kvm_setup_cpu$x86(0xffffffffffffffff, r3, &(0x7f0000000000/0x18000)=nil, &(0x7f00000001c0)=[@text64={0x40, &(0x7f0000000040)="b9800000c00f3235001000000f30f24c0f2c49e8426dc4027d3493b80800003626660f7e676d660f1678b06cc403f9dfbeb70000000bc7442400f5000000c744240284d178bcff1c24f2f347dbe1", 0x4e}], 0x1, 0x48, 0x0, 0x0) pipe2(&(0x7f0000000000)={0xffffffffffffffff, 0xffffffffffffffff}, 0x0) ioctl$KVM_RUN(r3, 0xae80, 0x0) ioctl$EVIOCSREP(r4, 0x40084503, &(0x7f00000000c0)=[0x8, 0x200]) r5 = getgid() ioctl$KVM_RUN(r1, 0xae80, 0x0) getsockopt$inet6_IPV6_XFRM_POLICY(r1, 0x29, 0x23, &(0x7f0000000480)={{{@in6=@mcast1, @in=@remote, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0}}, {{@in=@empty}, 0x0, @in=@loopback}}, &(0x7f0000000380)=0xe8) stat(&(0x7f0000000640)='./file0\x00', &(0x7f0000000580)={0x0, 0x0, 0x0, 0x0, 0x0}) lstat(&(0x7f0000000400)='./file0\x00', &(0x7f0000000780)={0x0, 0x0, 0x0, 0x0, 0x0}) userfaultfd(0x800) syz_mount_image$hfsplus(&(0x7f0000000100)='hfsplus\x00', &(0x7f0000000140)='./file0\x00', 0x5, 0x2, &(0x7f0000000300)=[{&(0x7f0000000180)="ec8e5794f27f3185121cb757fe93f7cc94bd619842a7c7", 0x17, 0x6}, {&(0x7f0000000200)="a831ab3c337fbcffb4ac6559531ce1674c356f99183341ad80b303404937db494f198d20200d74da53f73534e341808a691cd78a92eb8c39638710b472dfcebea62426b93474bb5d7cf7d70a5ba31da862f81fde0af3c264fac6526bcd0c59c44fc499e06e9a2610508d4b1a4b4eb7e0607b5e75efa7f023008fe75eade9fab57d3b14347429b07e818e07bedc36816daeaa0eb6a5c342bb0c0ebed26bc355521746e47a9216a7b569570a0b8ea66c509272f09d35515ca42872caf840a4a7a3f5d48201d66959384042517dace3e9562cd4cc0ff8ebb109d9c0084fe4393e1a", 0xe0}], 0x450, &(0x7f0000000800)=ANY=[@ANYBLOB="63726561746f7228e5b7ff672c6769653d", @ANYRESHEX=r5, @ANYBLOB="c7739d63b4bbdd1821fb344c500e979704d97f5f78e9f539057cdf17620efe66b847505097fd320e6725c485a9d55aabf1cf9e277844b3f3944717c2088956358b4ced28288da3ea08ef2b48160830b007f2f1b6c01259f9afd49873bff2ef64e23b4db7e4e61fe144b2876bb3d8d8e417484a5391b3a53d361db2d37959f60a37c45bd477cdcb3a1d0b1228d433c91fa26b7b", @ANYRESHEX=r6, @ANYBLOB="ff0f000065636f6d706f69772c73657373696f6e3d307830b009003030303030303030303030382c7569643d", @ANYRESHEX=r7, @ANYBLOB=',nls=iso8859-1,barrier,func=FIRMWARE_CHECK,rootcontext=unconfined_u,uid=', @ANYRESDEC=r8, @ANYBLOB=',\x00']) ioctl$EVIOCGBITSND(r4, 0x80404532, &(0x7f0000000100)) [ 1152.098600] R13: 0000000000000000 R14: 00000000004db380 R15: 00000000ffffffff 03:48:11 executing program 5: r0 = socket$inet6(0xa, 0x2, 0x0) connect$inet6(r0, &(0x7f0000000180)={0x1000000a, 0x0, 0x0, @local, 0x4}, 0x1c) [ 1152.177939] gfs2: fsid=_: Trying to join cluster "lock_nolock", "_" [ 1152.204294] gfs2: fsid=_: Now mounting FS... [ 1152.219122] gfs2: not a GFS2 filesystem [ 1152.237693] hfsplus: unable to parse mount options [ 1152.247517] gfs2: fsid=_: can't read superblock [ 1152.277903] gfs2: fsid=_: can't read superblock: -22 [ 1152.306131] kobject_add_internal failed for _ with -EEXIST, don't try to register things with the same name in the same directory. [ 1152.342514] gfs2: fsid=_: error -17 adding sysfs files 03:48:12 executing program 4: syz_mount_image$gfs2(&(0x7f0000000140)='gfs2\x00', &(0x7f0000000200)='./file0\x00', 0x125ec, 0x0, 0x0, 0x0, &(0x7f00000003c0)={[{@locktable={'locktable', 0x3d, '/'}}, {@lockproto_nolock='lockproto=lock_nolock'}]}) socketpair$unix(0x1, 0x1, 0x0, &(0x7f0000000180)) 03:48:12 executing program 5: r0 = socket$inet6(0xa, 0x2, 0x0) connect$inet6(r0, &(0x7f0000000180)={0xfffffffd, 0x0, 0x0, @local, 0x4}, 0x1c) 03:48:12 executing program 2: r0 = socket$inet(0x2, 0x4000000000000001, 0x0) setsockopt$inet_tcp_int(r0, 0x6, 0x80000000000002, &(0x7f0000000040)=0x74, 0x4) bind$inet(r0, &(0x7f0000000180)={0x2, 0x4e23, @multicast1}, 0x10) sendto$inet(r0, 0x0, 0x0, 0x200007fd, &(0x7f0000e68000)={0x2, 0x4e23, @local}, 0x10) write$binfmt_elf64(r0, &(0x7f00000012c0)=ANY=[@ANYBLOB="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"], 0x209) mmap(&(0x7f0000000000/0xb36000)=nil, 0xb36000, 0x3, 0x8031, 0xffffffffffffffff, 0x0) sendmmsg$inet_sctp(r0, &(0x7f0000002600)=[{0x0, 0x64000000000000, &(0x7f0000000240)=[{&(0x7f0000000380)="d4", 0x1}], 0x1}], 0x1, 0x0) 03:48:12 executing program 1: r0 = openat$kvm(0xffffffffffffff9c, &(0x7f0000000000)='/dev/kvm\x00', 0xfffffffffffffffb, 0x0) r1 = ioctl$KVM_CREATE_VM(r0, 0xae01, 0x0) r2 = ioctl$KVM_CREATE_VCPU(r1, 0xae41, 0x0) ioctl$KVM_SET_USER_MEMORY_REGION(r1, 0x4020ae46, &(0x7f0000000400)={0x0, 0x3, 0x0, 0x2000, &(0x7f0000000000/0x2000)=nil}) syz_kvm_setup_cpu$x86(r1, 0xffffffffffffffff, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x0, 0x0, 0x6c69f2ff4c0f45d) sendmmsg$unix(0xffffffffffffffff, &(0x7f0000002780)=[{0x0, 0x0, &(0x7f0000001d00)=[{&(0x7f0000000bc0)="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", 0x3c5}], 0x1}], 0x1, 0x0) ioctl$KVM_REGISTER_COALESCED_MMIO(r1, 0x4010ae67, &(0x7f00000000c0)={0x0, 0x15200}) syz_kvm_setup_cpu$x86(0xffffffffffffffff, r2, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x8, 0x0, 0x0) ioctl$KVM_RUN(r2, 0xae80, 0x0) [ 1152.500547] gfs2: fsid=_: Trying to join cluster "lock_nolock", "_" [ 1152.516536] gfs2: fsid=_: Now mounting FS... [ 1152.532005] gfs2: not a GFS2 filesystem [ 1152.562226] gfs2: fsid=_: can't read superblock [ 1152.571622] gfs2: fsid=_: can't read superblock: -22 [ 1152.634915] sysfs: cannot create duplicate filename '/fs/gfs2/_' [ 1152.641247] CPU: 0 PID: 23208 Comm: syz-executor4 Not tainted 4.20.0-next-20190103 #4 [ 1152.649230] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 1152.658580] Call Trace: [ 1152.658604] dump_stack+0x1db/0x2d0 [ 1152.658627] ? dump_stack_print_info.cold+0x20/0x20 [ 1152.658646] ? _raw_spin_unlock_irqrestore+0xa4/0xe0 [ 1152.674941] sysfs_warn_dup.cold+0x1c/0x31 [ 1152.679186] sysfs_create_dir_ns+0x2ce/0x330 [ 1152.683597] ? sysfs_create_mount_point+0xa0/0xa0 [ 1152.688446] ? do_raw_spin_trylock+0x270/0x270 [ 1152.693031] kobject_add_internal.cold+0x129/0x6d8 [ 1152.697962] ? kobj_ns_type_registered+0x60/0x60 [ 1152.702730] ? kfree_const+0x59/0x70 [ 1152.706433] ? rcu_read_lock_sched_held+0x110/0x130 [ 1152.711438] ? kfree+0x1fa/0x230 [ 1152.714797] ? kfree_const+0x5e/0x70 [ 1152.718508] kobject_init_and_add+0x101/0x160 [ 1152.722996] ? kobject_add_internal+0x4b0/0x4b0 [ 1152.727671] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 1152.733209] ? vsnprintf+0x368/0x1b10 [ 1152.737029] gfs2_sys_fs_add+0x210/0x500 [ 1152.741089] ? recover_store+0x1a0/0x1a0 [ 1152.745145] ? snprintf+0xbb/0xf0 [ 1152.748588] ? vsprintf+0x30/0x40 [ 1152.752068] ? set_blocksize+0x2bf/0x340 [ 1152.756137] ? memcpy+0x46/0x50 [ 1152.759441] fill_super+0x894/0x1990 [ 1152.763160] ? gfs2_online_uevent+0x2d0/0x2d0 [ 1152.767651] ? snprintf+0xbb/0xf0 [ 1152.771093] ? vsprintf+0x40/0x40 [ 1152.774539] ? ns_capable_common+0x141/0x170 [ 1152.778963] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 1152.783969] ? set_blocksize+0x2bf/0x340 [ 1152.788020] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 1152.793580] gfs2_mount+0x5db/0x6ee [ 1152.797215] ? fill_super+0x1990/0x1990 [ 1152.801203] ? vfs_parse_fs_string+0x1c5/0x2b0 [ 1152.805799] ? vfs_parse_fs_param+0x4b0/0x4b0 [ 1152.810290] ? fill_super+0x1990/0x1990 [ 1152.814256] legacy_get_tree+0xf2/0x200 [ 1152.818226] vfs_get_tree+0x123/0x450 [ 1152.822043] do_mount+0x1622/0x2fa0 [ 1152.825679] ? copy_mount_string+0x40/0x40 [ 1152.829906] ? kmem_cache_alloc_trace+0x354/0x760 [ 1152.834762] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 1152.840291] ? _copy_from_user+0xdd/0x150 [ 1152.844444] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 1152.849984] ? copy_mount_options+0x30e/0x440 [ 1152.854478] ksys_mount+0xdb/0x150 [ 1152.858012] __x64_sys_mount+0xbe/0x150 [ 1152.861982] do_syscall_64+0x1a3/0x800 [ 1152.865873] ? syscall_return_slowpath+0x5f0/0x5f0 [ 1152.870794] ? prepare_exit_to_usermode+0x232/0x3b0 [ 1152.875805] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 1152.880645] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 1152.885822] RIP: 0033:0x45a93a [ 1152.889006] Code: b8 a6 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 ed 8c fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 0f 83 ca 8c fb ff c3 66 0f 1f 84 00 00 00 00 00 [ 1152.907895] RSP: 002b:00007ff699fe9a88 EFLAGS: 00000206 ORIG_RAX: 00000000000000a5 [ 1152.915594] RAX: ffffffffffffffda RBX: 00007ff699fe9b30 RCX: 000000000045a93a [ 1152.922854] RDX: 00007ff699fe9ad0 RSI: 0000000020000200 RDI: 00007ff699fe9af0 [ 1152.930119] RBP: 0000000020000200 R08: 00007ff699fe9b30 R09: 00007ff699fe9ad0 [ 1152.937377] R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000003 [ 1152.944635] R13: 0000000000000000 R14: 00000000004db380 R15: 00000000ffffffff 03:48:12 executing program 3: syz_mount_image$gfs2(&(0x7f0000000140)='gfs2\x00', &(0x7f0000000200)='./file0\x00', 0xf9fdffff, 0x0, 0x0, 0x0, &(0x7f00000003c0)={[{@locktable={'locktable', 0x3d, '/'}}, {@lockproto_nolock='lockproto=lock_nolock'}]}) 03:48:12 executing program 0: socketpair$unix(0x1, 0x1, 0x0, &(0x7f0000000440)={0xffffffffffffffff, 0xffffffffffffffff}) r1 = syz_open_dev$sndpcmp(&(0x7f00000000c0)='/dev/snd/pcmC#D#p\x00', 0x80, 0x400000) ioctl$SNDRV_SEQ_IOCTL_GET_QUEUE_TIMER(r1, 0xc0605345, &(0x7f0000000100)={0x5, 0x3, {0xffffffffffffffff, 0x0, 0xffffffffffff9306, 0x3, 0x9}}) ioctl$PERF_EVENT_IOC_ENABLE(r0, 0x8912, 0x400200) openat$dlm_monitor(0xffffffffffffff9c, &(0x7f0000000340)='/dev/dlm-monitor\x00', 0x0, 0x0) r2 = ioctl$KVM_CREATE_VM(0xffffffffffffffff, 0xae01, 0x0) r3 = ioctl$KVM_CREATE_VCPU(r2, 0xae41, 0x0) syz_kvm_setup_cpu$x86(r2, 0xffffffffffffffff, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x0, 0x0, 0x0) syz_kvm_setup_cpu$x86(0xffffffffffffffff, r3, &(0x7f0000000000/0x18000)=nil, &(0x7f00000001c0)=[@text64={0x40, &(0x7f0000000040)="b9800000c00f3235001000000f30f24c0f2c49e8426dc4027d3493b80800003626660f7e676d660f1678b06cc403f9dfbeb70000000bc7442400f5000000c744240284d178bcff1c24f2f347dbe1", 0x4e}], 0x1, 0x48, 0x0, 0x0) pipe2(&(0x7f0000000000), 0x0) ioctl$KVM_RUN(r3, 0xae80, 0x0) 03:48:12 executing program 5: r0 = socket$inet6(0xa, 0x2, 0x0) connect$inet6(r0, &(0x7f0000000180)={0xa, 0xfe80000000000000, 0x0, @local, 0x4}, 0x1c) 03:48:12 executing program 1: r0 = openat$kvm(0xffffffffffffff9c, &(0x7f0000000140)='/dev/kvm\x00', 0x0, 0x0) r1 = syz_open_dev$radio(&(0x7f0000000000)='/dev/radio#\x00', 0x0, 0x2) ioctl$KVM_CREATE_VCPU(r0, 0xae41, 0x2) ioctl$EVIOCGRAB(r1, 0x40044590, &(0x7f0000000380)=0x86c) r2 = ioctl$KVM_CREATE_VM(r0, 0xae01, 0x0) r3 = ioctl$KVM_CREATE_VCPU(r2, 0xae41, 0x0) ioctl$KVM_SET_USER_MEMORY_REGION(r2, 0x4020ae46, &(0x7f0000000400)={0x0, 0x3, 0x0, 0x2000, &(0x7f0000000000/0x2000)=nil}) write$selinux_attr(r1, &(0x7f0000000180)='system_u:object_r:mnt_t:s0\x00', 0x1b) syz_kvm_setup_cpu$x86(r2, 0xffffffffffffffff, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x0, 0x0, 0xfffffffffffffe78) sendmmsg$unix(0xffffffffffffffff, &(0x7f0000002780)=[{0x0, 0x0, &(0x7f0000001d00)=[{&(0x7f0000000bc0)="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", 0x3c5}], 0x1}], 0x1, 0x0) r4 = add_key$keyring(&(0x7f00000001c0)='keyring\x00', &(0x7f0000000200)={'syz', 0x2}, 0x0, 0x0, 0xfffffffffffffffb) add_key$keyring(&(0x7f00000002c0)='keyring\x00', &(0x7f0000000300)={'syz', 0x1}, 0x0, 0x0, 0xfffffffffffffffb) keyctl$instantiate(0xc, r4, &(0x7f0000000240)=@encrypted_new={'new ', 'ecryptfs', 0x20, 'user:', 'vmnet1posix_acl_accesswlan0mime_type][]%cpuset', 0x20, 0x6}, 0x8d3963bf, r4) ioctl$KVM_REGISTER_COALESCED_MMIO(r2, 0x4010ae67, &(0x7f00000000c0)={0x0, 0x15200}) syz_kvm_setup_cpu$x86(0xffffffffffffffff, r3, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x8, 0x0, 0x0) ioctl$KVM_RUN(r3, 0xae80, 0x0) bpf$BPF_TASK_FD_QUERY(0x14, &(0x7f0000000100)={0xffffffffffffffff, r1, 0x0, 0x9, &(0x7f0000000080)='/dev/kvm\x00'}, 0x30) ptrace(0x421f, r5) [ 1153.112693] kobject_add_internal failed for _ with -EEXIST, don't try to register things with the same name in the same directory. [ 1153.151348] gfs2: fsid=_: error -17 adding sysfs files 03:48:12 executing program 0: socketpair$unix(0x1, 0x1, 0x0, &(0x7f0000000440)={0xffffffffffffffff, 0xffffffffffffffff}) ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200) r2 = openat$kvm(0xffffffffffffff9c, &(0x7f00000000c0)='/dev/kvm\x00', 0x0, 0x0) r3 = dup2(r1, r0) write$FUSE_NOTIFY_DELETE(r3, &(0x7f0000000100)={0x32, 0x6, 0x0, {0x6, 0x3, 0x9, 0x0, '/dev/kvm\x00'}}, 0x32) openat$dlm_monitor(0xffffffffffffff9c, &(0x7f0000000340)='/dev/dlm-monitor\x00', 0x0, 0x0) r4 = ioctl$KVM_CREATE_VM(r2, 0xae01, 0x0) r5 = ioctl$KVM_CREATE_VCPU(r4, 0xae41, 0x0) syz_kvm_setup_cpu$x86(r4, 0xffffffffffffffff, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x0, 0x0, 0x0) syz_kvm_setup_cpu$x86(0xffffffffffffffff, r5, &(0x7f0000000000/0x18000)=nil, &(0x7f00000001c0)=[@text64={0x40, &(0x7f0000000040)="b9800000c00f3235001000000f30f24c0f2c49e8426dc4027d3493b80800003626660f7e676d660f1678b06cc403f9dfbeb70000000bc7442400f5000000c744240284d178bcff1c24f2f347dbe1", 0x4e}], 0x1, 0x48, 0x0, 0x0) pipe2(&(0x7f0000000000), 0x0) ioctl$KVM_RUN(r5, 0xae80, 0x0) 03:48:12 executing program 5: r0 = socket$inet6(0xa, 0x2, 0x0) connect$inet6(r0, &(0x7f0000000180)={0xa, 0x300000000000000, 0x0, @local, 0x4}, 0x1c) [ 1153.162744] gfs2: fsid=_: Trying to join cluster "lock_nolock", "_" [ 1153.181595] gfs2: fsid=_: Now mounting FS... [ 1153.192049] gfs2: not a GFS2 filesystem [ 1153.199452] gfs2: fsid=_: can't read superblock [ 1153.204871] gfs2: fsid=_: can't read superblock: -22 [ 1153.260943] sysfs: cannot create duplicate filename '/fs/gfs2/_' [ 1153.278392] CPU: 0 PID: 23208 Comm: syz-executor4 Not tainted 4.20.0-next-20190103 #4 [ 1153.286392] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 1153.295775] Call Trace: [ 1153.298383] dump_stack+0x1db/0x2d0 [ 1153.302020] ? dump_stack_print_info.cold+0x20/0x20 [ 1153.307051] ? _raw_spin_unlock_irqrestore+0xa4/0xe0 [ 1153.312222] sysfs_warn_dup.cold+0x1c/0x31 [ 1153.312251] sysfs_create_dir_ns+0x2ce/0x330 [ 1153.312267] ? sysfs_create_mount_point+0xa0/0xa0 [ 1153.325711] ? do_raw_spin_trylock+0x270/0x270 [ 1153.330305] kobject_add_internal.cold+0x129/0x6d8 [ 1153.335243] ? kobj_ns_type_registered+0x60/0x60 [ 1153.335256] ? kfree_const+0x59/0x70 [ 1153.335269] ? rcu_read_lock_sched_held+0x110/0x130 [ 1153.348717] ? kfree+0x1fa/0x230 [ 1153.352092] ? kfree_const+0x5e/0x70 [ 1153.355808] kobject_init_and_add+0x101/0x160 [ 1153.360302] ? kobject_add_internal+0x4b0/0x4b0 [ 1153.364982] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 1153.370522] ? vsnprintf+0x368/0x1b10 [ 1153.374369] gfs2_sys_fs_add+0x210/0x500 [ 1153.378448] ? recover_store+0x1a0/0x1a0 [ 1153.382512] ? snprintf+0xbb/0xf0 [ 1153.385961] ? vsprintf+0x30/0x40 [ 1153.389410] ? set_blocksize+0x2bf/0x340 [ 1153.393467] ? memcpy+0x46/0x50 [ 1153.396746] fill_super+0x894/0x1990 [ 1153.400460] ? gfs2_online_uevent+0x2d0/0x2d0 [ 1153.404955] ? snprintf+0xbb/0xf0 [ 1153.408399] ? vsprintf+0x40/0x40 [ 1153.411864] ? ns_capable_common+0x141/0x170 [ 1153.416264] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 1153.421513] ? set_blocksize+0x2bf/0x340 [ 1153.425597] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 1153.431152] gfs2_mount+0x5db/0x6ee [ 1153.434774] ? fill_super+0x1990/0x1990 [ 1153.438763] ? vfs_parse_fs_string+0x1c5/0x2b0 [ 1153.443354] ? vfs_parse_fs_param+0x4b0/0x4b0 [ 1153.447863] ? fill_super+0x1990/0x1990 [ 1153.451831] legacy_get_tree+0xf2/0x200 [ 1153.455804] vfs_get_tree+0x123/0x450 [ 1153.459600] do_mount+0x1622/0x2fa0 [ 1153.463229] ? copy_mount_string+0x40/0x40 [ 1153.467475] ? kmem_cache_alloc_trace+0x354/0x760 [ 1153.472326] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 1153.477854] ? copy_mount_options+0x30e/0x440 [ 1153.482359] ksys_mount+0xdb/0x150 [ 1153.485921] __x64_sys_mount+0xbe/0x150 [ 1153.489905] do_syscall_64+0x1a3/0x800 [ 1153.493783] ? syscall_return_slowpath+0x5f0/0x5f0 [ 1153.498702] ? prepare_exit_to_usermode+0x232/0x3b0 [ 1153.503732] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 1153.508583] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 1153.513767] RIP: 0033:0x45a93a [ 1153.516951] Code: b8 a6 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 ed 8c fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 0f 83 ca 8c fb ff c3 66 0f 1f 84 00 00 00 00 00 [ 1153.535842] RSP: 002b:00007ff699fe9a88 EFLAGS: 00000206 ORIG_RAX: 00000000000000a5 [ 1153.543552] RAX: ffffffffffffffda RBX: 00007ff699fe9b30 RCX: 000000000045a93a [ 1153.550829] RDX: 00007ff699fe9ad0 RSI: 0000000020000200 RDI: 00007ff699fe9af0 [ 1153.558108] RBP: 0000000020000200 R08: 00007ff699fe9b30 R09: 00007ff699fe9ad0 [ 1153.565365] R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000003 [ 1153.572620] R13: 0000000000000000 R14: 00000000004db380 R15: 00000000ffffffff 03:48:13 executing program 5: r0 = socket$inet6(0xa, 0x2, 0x0) connect$inet6(r0, &(0x7f0000000180)={0xa, 0xf5ffffff, 0x0, @local, 0x4}, 0x1c) [ 1153.655781] kobject_add_internal failed for _ with -EEXIST, don't try to register things with the same name in the same directory. [ 1153.703684] gfs2: fsid=_: error -17 adding sysfs files 03:48:13 executing program 5: r0 = socket$inet6(0xa, 0x2, 0x0) connect$inet6(r0, &(0x7f0000000180)={0xa, 0x8000000, 0x0, @local, 0x4}, 0x1c) 03:48:13 executing program 4: syz_mount_image$gfs2(&(0x7f0000000140)='gfs2\x00', &(0x7f0000000200)='./file0\x00', 0xd925010000000000, 0x0, 0x0, 0x0, &(0x7f00000003c0)={[{@locktable={'locktable', 0x3d, '/'}}, {@lockproto_nolock='lockproto=lock_nolock'}]}) socketpair$unix(0x1, 0x1, 0x0, &(0x7f0000000180)) 03:48:13 executing program 2: r0 = socket$inet(0x2, 0x4000000000000001, 0x0) setsockopt$inet_tcp_int(r0, 0x6, 0x80000000000002, &(0x7f0000000040)=0x74, 0x4) bind$inet(r0, &(0x7f0000000180)={0x2, 0x4e23, @multicast1}, 0x10) sendto$inet(r0, 0x0, 0x0, 0x200007fd, &(0x7f0000e68000)={0x2, 0x4e23, @local}, 0x10) write$binfmt_elf64(r0, &(0x7f00000012c0)=ANY=[@ANYBLOB="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"], 0x209) mmap(&(0x7f0000000000/0xb36000)=nil, 0xb36000, 0x3, 0x8031, 0xffffffffffffffff, 0x0) sendmmsg$inet_sctp(r0, &(0x7f0000002600)=[{0x0, 0xa0010000, &(0x7f0000000240)=[{&(0x7f0000000380)="d4", 0x1}], 0x1}], 0x1, 0x0) 03:48:13 executing program 0: socketpair$unix(0x1, 0x1, 0x0, &(0x7f0000000440)={0xffffffffffffffff, 0xffffffffffffffff}) ioctl$PERF_EVENT_IOC_ENABLE(r0, 0x8912, 0x400200) r1 = openat$kvm(0xffffffffffffff9c, &(0x7f00000000c0)='/dev/kvm\x00', 0x0, 0x0) r2 = openat$dlm_monitor(0xffffffffffffff9c, &(0x7f0000000340)='/dev/dlm-monitor\x00', 0x0, 0x0) ioctl$KVM_IRQ_LINE(r2, 0x4008ae61, &(0x7f0000000700)={0x5, 0x7f}) r3 = ioctl$KVM_CREATE_VM(r1, 0xae01, 0x0) r4 = ioctl$KVM_CREATE_VCPU(r3, 0xae41, 0x0) stat(&(0x7f0000000500)='./file0\x00', &(0x7f0000000540)={0x0, 0x0, 0x0, 0x0, 0x0}) getsockopt$inet_IP_IPSEC_POLICY(r2, 0x0, 0x10, &(0x7f00000005c0)={{{@in6=@ipv4={[], [], @remote}, @in=@multicast1, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0}}, {{@in=@initdev}, 0x0, @in=@multicast2}}, &(0x7f00000006c0)=0xe8) syz_mount_image$gfs2(&(0x7f0000000100)='gfs2\x00', &(0x7f0000000140)='./file0\x00', 0x4, 0x4, &(0x7f0000000480)=[{&(0x7f0000000200)="2651ba72c60522bc5b528526ae093e18c07c101549d9aab61fb103860638b4f859e5fa5efe17e669cd3546dfdd712c1f7f6169f14a446f63a3fbb02583a1a86b3ae68d99b2f8b4c6748bd228398c3f05c89326aade6d47d0021a1235158af535851f82931c1e5438a545f6c671f1f2ffa68aaa9b6d2f431368d830e9a17a79e890f9ee1f3e9713e9b69ac38672519bb095c1b33c5bd4054d44153b63a509731dfb90e0a5551fceae2f681412e981cf1566e7115b7d8bac880b76868756", 0xbd, 0x401}, {&(0x7f00000002c0)="d2bfa0ea39a65fe69c14e6175d6b7a4b971ffccb509d4976d529853c6dbe093c05ed53fa78ae8688604e2389253696a9899d305e4fc6edf0073ea7caa0ba839bc8fc71", 0x43, 0xfa28}, {&(0x7f0000000180)="552d16efcc39246774f1c46b32", 0xd, 0x40}, {&(0x7f0000000380)="1874073cb844e573ad6efc61cba146e55742142ac13bb617664270a9bc5858dd012d059b03b76aa19ed5e9028fb1f983f3f7ecbf3614607384f64906e68c84f6ae5a4cd8927e8cbbabce814447e2dc904ee5f1ba07fb2f57919d8c24ef566d6187058214caae6c50ebde8421d361a09b80e368b704221b49998c20731c4fa1d6c9e0a0db2725f175e9d6af8de42982a736df4d078de23d3a1adb7a20f6288131", 0xa0, 0x6c7}], 0x400, &(0x7f00000007c0)=ANY=[@ANYBLOB="646174613d77726974656261636b2c6c6f63636f6f6b69652c646973636172642c757067726164bae2652c736d61636b66737472616e736d7574653d2f6465762f646c6d2d6d6f6e69746f72002c686173682c636f6e746578743d73746166665f752c736d61636b66736465663d5c6e6f6465762c7569643e", @ANYRESDEC=r5, @ANYBLOB=',defcontext=system_u,fowner=', @ANYRESDEC=r6, @ANYBLOB=',\x00']) syz_kvm_setup_cpu$x86(r3, 0xffffffffffffffff, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x0, 0x0, 0x0) syz_kvm_setup_cpu$x86(0xffffffffffffffff, r4, &(0x7f0000000000/0x18000)=nil, &(0x7f00000001c0)=[@text64={0x40, &(0x7f0000000040)="b9800000c00f3235001000000f30f24c0f2c49e8426dc4027d3493b80800003626660f7e676d660f1678b06cc403f9dfbeb70000000bc7442400f5000000c744240284d178bcff1c24f2f347dbe1", 0x4e}], 0x1, 0x48, 0x0, 0x0) pipe2(&(0x7f0000000000), 0x0) ioctl$KVM_RUN(r4, 0xae80, 0x0) 03:48:13 executing program 1: r0 = openat$kvm(0xffffffffffffff9c, &(0x7f0000000140)='/dev/kvm\x00', 0x0, 0x0) r1 = ioctl$KVM_CREATE_VM(r0, 0xae01, 0x0) r2 = ioctl$KVM_CREATE_VCPU(r1, 0xae41, 0x0) ioctl$KVM_SET_USER_MEMORY_REGION(r1, 0x4020ae46, &(0x7f0000000400)={0x0, 0x3, 0x0, 0x2000, &(0x7f0000000000/0x2000)=nil}) syz_kvm_setup_cpu$x86(r1, 0xffffffffffffffff, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x0, 0x0, 0xfffffffffffffe78) sendmmsg$unix(0xffffffffffffffff, &(0x7f0000002780)=[{0x0, 0x0, &(0x7f0000001d00)=[{&(0x7f0000000bc0)="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", 0x3c5}], 0x1}], 0x1, 0x0) ioctl$KVM_REGISTER_COALESCED_MMIO(r1, 0x4010ae67, &(0x7f00000000c0)={0x0, 0x15200}) syz_kvm_setup_cpu$x86(0xffffffffffffffff, r2, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x8, 0x0, 0x0) r3 = syz_open_dev$vbi(&(0x7f0000000000)='/dev/vbi#\x00', 0x1, 0x2) getsockopt$inet_sctp6_SCTP_LOCAL_AUTH_CHUNKS(0xffffffffffffffff, 0x84, 0x1b, &(0x7f0000000180)={0x0, 0x9a, "5c493b09777d180d1cafa91e71ad3ef9a0ae8398215d0c5cae56958a574e1c1ae56fecabe131c39f957681b931a34d12bcbb2b0d332fc35eaa0f39d8a612322845c2c25020d293fc3cd562aaecf191747e67c2885c6fc95567ca01febbe077f80185942c6667745bac721bb20affbed43769e1995628c639749e9b352e21430f014986fb5ebaebf5e6de7f926a019349a9f326cff64b12252fdc"}, &(0x7f0000000040)=0xa2) setsockopt$inet_sctp6_SCTP_AUTH_KEY(r3, 0x84, 0x17, &(0x7f0000000240)={r4, 0x8, 0x88, "c37f0982a248de237939f45214bea69cba92140f10479e8325a4b77b3e4cb2842970e4d956cf76be25a3c152443e618fd1555dc6ee221e93106756d42052ea3065fe7ca2e27553ea4dac273730b77d4f7e0de294f9869668ae83435794d1f2c43b49cc5cfffd2a7ee8d5f1a1fd1dc473eddabec7b3b05001a6c8c6b9f055450c6c55406afe3c35c8"}, 0x90) ioctl$KVM_RUN(r2, 0xae80, 0x0) [ 1153.860528] gfs2: fsid=_: Trying to join cluster "lock_nolock", "_" [ 1153.912870] gfs2: fsid=_: Now mounting FS... [ 1153.923335] gfs2: not a GFS2 filesystem [ 1153.934175] gfs2: fsid=_: can't read superblock [ 1153.963092] sysfs: cannot create duplicate filename '/fs/gfs2/_' [ 1153.980749] gfs2: fsid=_: can't read superblock: -22 [ 1153.993124] gfs2: invalid mount option: upgradºâe [ 1153.993309] CPU: 1 PID: 23258 Comm: syz-executor4 Not tainted 4.20.0-next-20190103 #4 [ 1153.998001] gfs2: can't parse mount arguments [ 1154.005960] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 1154.005965] Call Trace: [ 1154.005985] dump_stack+0x1db/0x2d0 [ 1154.006003] ? dump_stack_print_info.cold+0x20/0x20 [ 1154.006019] ? _raw_spin_unlock_irqrestore+0xa4/0xe0 [ 1154.006041] sysfs_warn_dup.cold+0x1c/0x31 [ 1154.006082] sysfs_create_dir_ns+0x2ce/0x330 [ 1154.006098] ? sysfs_create_mount_point+0xa0/0xa0 [ 1154.006112] ? do_raw_spin_trylock+0x270/0x270 [ 1154.006141] kobject_add_internal.cold+0x129/0x6d8 [ 1154.006163] ? kobj_ns_type_registered+0x60/0x60 [ 1154.063946] ? kfree_const+0x59/0x70 [ 1154.067660] ? rcu_read_lock_sched_held+0x110/0x130 [ 1154.072675] ? kfree+0x1fa/0x230 [ 1154.076046] ? kfree_const+0x5e/0x70 [ 1154.079778] kobject_init_and_add+0x101/0x160 [ 1154.084315] ? kobject_add_internal+0x4b0/0x4b0 [ 1154.089016] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 1154.094553] ? vsnprintf+0x368/0x1b10 [ 1154.098379] gfs2_sys_fs_add+0x210/0x500 [ 1154.102441] ? recover_store+0x1a0/0x1a0 [ 1154.106517] ? snprintf+0xbb/0xf0 [ 1154.109970] ? vsprintf+0x30/0x40 [ 1154.113448] ? set_blocksize+0x2bf/0x340 [ 1154.117541] ? memcpy+0x46/0x50 [ 1154.120873] fill_super+0x894/0x1990 [ 1154.124612] ? gfs2_online_uevent+0x2d0/0x2d0 [ 1154.129122] ? snprintf+0xbb/0xf0 [ 1154.132577] ? vsprintf+0x40/0x40 [ 1154.136043] ? ns_capable_common+0x141/0x170 [ 1154.140464] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 1154.145478] ? set_blocksize+0x2bf/0x340 [ 1154.149536] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 1154.155095] gfs2_mount+0x5db/0x6ee [ 1154.158751] ? fill_super+0x1990/0x1990 [ 1154.162772] ? vfs_parse_fs_string+0x1c5/0x2b0 [ 1154.167360] ? vfs_parse_fs_param+0x4b0/0x4b0 [ 1154.171871] ? fill_super+0x1990/0x1990 [ 1154.175862] legacy_get_tree+0xf2/0x200 [ 1154.179879] vfs_get_tree+0x123/0x450 [ 1154.183699] do_mount+0x1622/0x2fa0 [ 1154.187338] ? copy_mount_string+0x40/0x40 [ 1154.191599] ? kmem_cache_alloc_trace+0x354/0x760 [ 1154.196467] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 1154.202011] ? copy_mount_options+0x30e/0x440 [ 1154.206531] ksys_mount+0xdb/0x150 [ 1154.210292] __x64_sys_mount+0xbe/0x150 [ 1154.214285] do_syscall_64+0x1a3/0x800 [ 1154.218178] ? syscall_return_slowpath+0x5f0/0x5f0 [ 1154.223129] ? prepare_exit_to_usermode+0x232/0x3b0 [ 1154.228169] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 1154.233022] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 1154.238242] RIP: 0033:0x45a93a [ 1154.241433] Code: b8 a6 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 ed 8c fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 0f 83 ca 8c fb ff c3 66 0f 1f 84 00 00 00 00 00 [ 1154.260370] RSP: 002b:00007ff699fe9a88 EFLAGS: 00000206 ORIG_RAX: 00000000000000a5 [ 1154.268083] RAX: ffffffffffffffda RBX: 00007ff699fe9b30 RCX: 000000000045a93a [ 1154.275352] RDX: 00007ff699fe9ad0 RSI: 0000000020000200 RDI: 00007ff699fe9af0 [ 1154.282648] RBP: 0000000020000200 R08: 00007ff699fe9b30 R09: 00007ff699fe9ad0 [ 1154.289917] R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000003 [ 1154.297182] R13: 0000000000000000 R14: 00000000004db380 R15: 00000000ffffffff [ 1154.458557] gfs2: invalid mount option: upgradºâe [ 1154.464416] gfs2: can't parse mount arguments 03:48:14 executing program 3: syz_mount_image$gfs2(&(0x7f0000000140)='gfs2\x00', &(0x7f0000000200)='./file0\x00', 0xfffffffffffff000, 0x0, 0x0, 0x0, &(0x7f00000003c0)={[{@locktable={'locktable', 0x3d, '/'}}, {@lockproto_nolock='lockproto=lock_nolock'}]}) 03:48:14 executing program 5: r0 = socket$inet6(0xa, 0x2, 0x0) connect$inet6(r0, &(0x7f0000000180)={0xa, 0x3, 0x0, @local, 0x4}, 0x1c) 03:48:14 executing program 0: socketpair$unix(0x1, 0x1, 0x0, &(0x7f0000000440)={0xffffffffffffffff, 0xffffffffffffffff}) ioctl$PERF_EVENT_IOC_ENABLE(r0, 0x8912, 0x400200) r1 = openat$kvm(0xffffffffffffff9c, &(0x7f00000000c0)='/dev/kvm\x00', 0x0, 0x0) openat$dlm_monitor(0xffffffffffffff9c, &(0x7f0000000340)='/dev/dlm-monitor\x00', 0x0, 0x0) r2 = ioctl$KVM_CREATE_VM(r1, 0xae01, 0x0) r3 = ioctl$KVM_CREATE_VCPU(r2, 0xae41, 0x0) syz_kvm_setup_cpu$x86(r2, 0xffffffffffffffff, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x0, 0x0, 0x0) syz_kvm_setup_cpu$x86(0xffffffffffffffff, r3, &(0x7f0000000000/0x18000)=nil, &(0x7f00000001c0)=[@text64={0x40, &(0x7f0000000040)="b9800000c00f3235001000000f30f24c0f2c49e8426dc4027d3493b80800003626660f7e676d660f1678b06cc403f9dfbeb70000000bc7442400f5000000c744240284d178bcff1c24f2f347dbe1", 0x4e}], 0x1, 0x48, 0x0, 0x0) pipe2(&(0x7f0000000000)={0xffffffffffffffff, 0xffffffffffffffff}, 0x0) ioctl$KVM_RUN(r3, 0xae80, 0x0) ioctl$KVM_SET_XSAVE(r4, 0x5000aea5, &(0x7f0000000480)={"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"}) [ 1154.546844] kobject_add_internal failed for _ with -EEXIST, don't try to register things with the same name in the same directory. [ 1154.558906] gfs2: fsid=_: error -17 adding sysfs files 03:48:14 executing program 5: r0 = socket$inet6(0xa, 0x2, 0x0) connect$inet6(r0, &(0x7f0000000180)={0xa, 0xa00000000000000, 0x0, @local, 0x4}, 0x1c) 03:48:14 executing program 2: r0 = socket$inet(0x2, 0x4000000000000001, 0x0) setsockopt$inet_tcp_int(r0, 0x6, 0x80000000000002, &(0x7f0000000040)=0x74, 0x4) bind$inet(r0, &(0x7f0000000180)={0x2, 0x4e23, @multicast1}, 0x10) sendto$inet(r0, 0x0, 0x0, 0x200007fd, &(0x7f0000e68000)={0x2, 0x4e23, @local}, 0x10) write$binfmt_elf64(r0, &(0x7f00000012c0)=ANY=[@ANYBLOB="7f454c4601000500000000000000000000000300000000008b0300000000000040000000000000001901000000000000cf0000000100380002000100c70a010151e57474090e00000300000000000000ff0f00000000000000000080000000000600000000000000db0a000000000000d616000000000000b27e2b7d90630ff79f047e22afbe739a615db84a0058ce3572d99ea10910ec6bf6ba57404bb35b88227009c25cfc6802a2b9a17a285b27f3e6a66f3f7d712cc9d3daf7e5b378f1f1aea47383c1b2213503c6bf3f6e73ca712d88eb1852562e8796913d6a3236e2532dcdade6597d5c20651c4520ce1ade1bd110422aba4e4364e2cf9589e661ad0ff96218d75fe22a793040b35188c96f2ca9fe626500000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000f52687e000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000901a50be12753000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"], 0x209) mmap(&(0x7f0000000000/0xb36000)=nil, 0xb36000, 0x3, 0x8031, 0xffffffffffffffff, 0x0) sendmmsg$inet_sctp(r0, &(0x7f0000002600)=[{0x0, 0x68000000, &(0x7f0000000240)=[{&(0x7f0000000380)="d4", 0x1}], 0x1}], 0x1, 0x0) 03:48:14 executing program 5: r0 = socket$inet6(0xa, 0x2, 0x0) connect$inet6(r0, &(0x7f0000000180)={0xa, 0x1000000000000000, 0x0, @local, 0x4}, 0x1c) 03:48:14 executing program 4: syz_mount_image$gfs2(&(0x7f0000000140)='gfs2\x00', &(0x7f0000000200)='./file0\x00', 0x6000000000000000, 0x0, 0x0, 0x0, &(0x7f00000003c0)={[{@locktable={'locktable', 0x3d, '/'}}, {@lockproto_nolock='lockproto=lock_nolock'}]}) socketpair$unix(0x1, 0x1, 0x0, &(0x7f0000000180)) [ 1154.834975] gfs2: fsid=_: Trying to join cluster "lock_nolock", "_" [ 1154.901837] gfs2: fsid=_: Now mounting FS... [ 1154.950289] sysfs: cannot create duplicate filename '/fs/gfs2/_' [ 1154.957288] CPU: 1 PID: 23300 Comm: syz-executor4 Not tainted 4.20.0-next-20190103 #4 [ 1154.965270] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 1154.974632] Call Trace: [ 1154.977249] dump_stack+0x1db/0x2d0 [ 1154.980897] ? dump_stack_print_info.cold+0x20/0x20 [ 1154.985934] ? _raw_spin_unlock_irqrestore+0xa4/0xe0 [ 1154.991073] sysfs_warn_dup.cold+0x1c/0x31 [ 1154.995325] sysfs_create_dir_ns+0x2ce/0x330 [ 1154.998478] gfs2: not a GFS2 filesystem [ 1154.999749] ? sysfs_create_mount_point+0xa0/0xa0 [ 1154.999765] ? do_raw_spin_trylock+0x270/0x270 [ 1154.999792] kobject_add_internal.cold+0x129/0x6d8 [ 1155.018132] ? kobj_ns_type_registered+0x60/0x60 [ 1155.022913] ? kfree_const+0x59/0x70 [ 1155.022940] ? rcu_read_lock_sched_held+0x110/0x130 [ 1155.022955] ? kfree+0x1fa/0x230 [ 1155.022972] ? kfree_const+0x5e/0x70 [ 1155.023003] kobject_init_and_add+0x101/0x160 [ 1155.023020] ? kobject_add_internal+0x4b0/0x4b0 [ 1155.023037] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 1155.032362] gfs2: fsid=_: can't read superblock [ 1155.035188] ? vsnprintf+0x368/0x1b10 [ 1155.035215] gfs2_sys_fs_add+0x210/0x500 [ 1155.035230] ? recover_store+0x1a0/0x1a0 [ 1155.035247] ? snprintf+0xbb/0xf0 [ 1155.035262] ? vsprintf+0x30/0x40 [ 1155.048109] ? set_blocksize+0x2bf/0x340 [ 1155.048128] ? memcpy+0x46/0x50 [ 1155.048146] fill_super+0x894/0x1990 [ 1155.054924] gfs2: fsid=_: can't read superblock: -22 [ 1155.058343] ? gfs2_online_uevent+0x2d0/0x2d0 03:48:14 executing program 5: r0 = socket$inet6(0xa, 0x2, 0x0) connect$inet6(r0, &(0x7f0000000180)={0xa, 0x40000000, 0x0, @local, 0x4}, 0x1c) [ 1155.058365] ? snprintf+0xbb/0xf0 [ 1155.058379] ? vsprintf+0x40/0x40 [ 1155.104655] ? ns_capable_common+0x141/0x170 [ 1155.109093] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 1155.114115] ? set_blocksize+0x2bf/0x340 [ 1155.114131] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 1155.114148] gfs2_mount+0x5db/0x6ee [ 1155.114163] ? fill_super+0x1990/0x1990 [ 1155.114200] ? vfs_parse_fs_string+0x1c5/0x2b0 [ 1155.135878] ? vfs_parse_fs_param+0x4b0/0x4b0 [ 1155.140386] ? fill_super+0x1990/0x1990 [ 1155.144357] legacy_get_tree+0xf2/0x200 [ 1155.144377] vfs_get_tree+0x123/0x450 [ 1155.144395] do_mount+0x1622/0x2fa0 [ 1155.144410] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 1155.144430] ? copy_mount_string+0x40/0x40 [ 1155.155796] ? copy_mount_options+0x255/0x440 [ 1155.169229] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 1155.174788] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 1155.180342] ? copy_mount_options+0x30e/0x440 [ 1155.184849] ksys_mount+0xdb/0x150 [ 1155.188412] __x64_sys_mount+0xbe/0x150 [ 1155.192390] do_syscall_64+0x1a3/0x800 [ 1155.196292] ? syscall_return_slowpath+0x5f0/0x5f0 [ 1155.201235] ? prepare_exit_to_usermode+0x232/0x3b0 [ 1155.206260] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 1155.211123] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 1155.216312] RIP: 0033:0x45a93a [ 1155.219514] Code: b8 a6 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 ed 8c fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 0f 83 ca 8c fb ff c3 66 0f 1f 84 00 00 00 00 00 [ 1155.238411] RSP: 002b:00007ff699fe9a88 EFLAGS: 00000206 ORIG_RAX: 00000000000000a5 03:48:14 executing program 1: r0 = openat$kvm(0xffffffffffffff9c, &(0x7f0000000140)='/dev/kvm\x00', 0x0, 0x0) ioctl$UI_GET_VERSION(r0, 0x8004552d, &(0x7f0000000000)) r1 = ioctl$KVM_CREATE_VM(r0, 0xae01, 0x0) r2 = ioctl$KVM_CREATE_VCPU(r1, 0xae41, 0x0) ioctl$KVM_SET_USER_MEMORY_REGION(r1, 0x4020ae46, &(0x7f0000000400)={0x0, 0x3, 0x0, 0x2000, &(0x7f0000000000/0x2000)=nil}) syz_kvm_setup_cpu$x86(r1, 0xffffffffffffffff, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x0, 0x0, 0xfffffffffffffe78) sendmmsg$unix(0xffffffffffffffff, &(0x7f0000002780)=[{0x0, 0x0, &(0x7f0000001d00)=[{&(0x7f0000000bc0)="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", 0x3c5}], 0x1}], 0x1, 0x0) ioctl$KVM_REGISTER_COALESCED_MMIO(r1, 0x4010ae67, &(0x7f00000000c0)={0x0, 0x15200}) syz_kvm_setup_cpu$x86(0xffffffffffffffff, r2, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x8, 0x0, 0x0) ioctl$KVM_RUN(r2, 0xae80, 0x0) [ 1155.246113] RAX: ffffffffffffffda RBX: 00007ff699fe9b30 RCX: 000000000045a93a [ 1155.253384] RDX: 00007ff699fe9ad0 RSI: 0000000020000200 RDI: 00007ff699fe9af0 [ 1155.260644] RBP: 0000000020000200 R08: 00007ff699fe9b30 R09: 00007ff699fe9ad0 [ 1155.267907] R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000003 [ 1155.275170] R13: 0000000000000000 R14: 00000000004db380 R15: 00000000ffffffff 03:48:15 executing program 5: r0 = socket$inet6(0xa, 0x2, 0x0) connect$inet6(r0, &(0x7f0000000180)={0xa, 0x4000, 0x0, @local, 0x4}, 0x1c) [ 1155.341387] kobject_add_internal failed for _ with -EEXIST, don't try to register things with the same name in the same directory. [ 1155.355020] gfs2: fsid=_: error -17 adding sysfs files [ 1155.481182] gfs2: fsid=_: Trying to join cluster "lock_nolock", "_" 03:48:15 executing program 4: syz_mount_image$gfs2(&(0x7f0000000140)='gfs2\x00', &(0x7f0000000200)='./file0\x00', 0x21000000, 0x0, 0x0, 0x0, &(0x7f00000003c0)={[{@locktable={'locktable', 0x3d, '/'}}, {@lockproto_nolock='lockproto=lock_nolock'}]}) socketpair$unix(0x1, 0x1, 0x0, &(0x7f0000000180)) [ 1155.521362] gfs2: fsid=_: Now mounting FS... 03:48:15 executing program 0: socketpair$unix(0x1, 0x1, 0x0, &(0x7f0000000440)={0xffffffffffffffff, 0xffffffffffffffff}) ioctl$PERF_EVENT_IOC_ENABLE(r0, 0x8912, 0x400200) r1 = openat$kvm(0xffffffffffffff9c, &(0x7f00000000c0)='/dev/kvm\x00', 0x0, 0x0) openat$dlm_monitor(0xffffffffffffff9c, &(0x7f0000000340)='/dev/dlm-monitor\x00', 0x0, 0x0) r2 = ioctl$KVM_CREATE_VM(r1, 0xae01, 0x0) syz_kvm_setup_cpu$x86(r2, 0xffffffffffffffff, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x0, 0x0, 0x0) syz_kvm_setup_cpu$x86(0xffffffffffffffff, 0xffffffffffffffff, &(0x7f0000000000/0x18000)=nil, &(0x7f00000001c0)=[@text64={0x40, &(0x7f0000000040)="b9800000c00f3235001000000f30f24c0f2c49e8426dc4027d3493b80800003626660f7e676d660f1678b06cc403f9dfbeb70000000bc7442400f5000000c744240284d178bcff1c24f2f347dbe1", 0x4e}], 0x1, 0x48, 0x0, 0x0) pipe2(&(0x7f0000000000)={0xffffffffffffffff}, 0x0) ioctl$KDGETLED(r3, 0x4b31, &(0x7f0000000100)) ioctl$KVM_RUN(0xffffffffffffffff, 0xae80, 0x0) [ 1155.552214] gfs2: not a GFS2 filesystem [ 1155.569017] gfs2: fsid=_: can't read superblock [ 1155.591485] gfs2: fsid=_: can't read superblock: -22 [ 1155.612309] sysfs: cannot create duplicate filename '/fs/gfs2/_' [ 1155.655823] CPU: 0 PID: 23328 Comm: syz-executor4 Not tainted 4.20.0-next-20190103 #4 [ 1155.663805] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 1155.663811] Call Trace: [ 1155.663833] dump_stack+0x1db/0x2d0 [ 1155.663854] ? dump_stack_print_info.cold+0x20/0x20 [ 1155.684424] ? _raw_spin_unlock_irqrestore+0xa4/0xe0 [ 1155.689538] sysfs_warn_dup.cold+0x1c/0x31 [ 1155.693775] sysfs_create_dir_ns+0x2ce/0x330 [ 1155.698206] ? sysfs_create_mount_point+0xa0/0xa0 [ 1155.703073] ? do_raw_spin_trylock+0x270/0x270 [ 1155.703102] kobject_add_internal.cold+0x129/0x6d8 [ 1155.703122] ? kobj_ns_type_registered+0x60/0x60 [ 1155.703135] ? kfree_const+0x59/0x70 [ 1155.703149] ? rcu_read_lock_sched_held+0x110/0x130 [ 1155.726182] ? kfree+0x1fa/0x230 [ 1155.729559] ? kfree_const+0x5e/0x70 [ 1155.733310] kobject_init_and_add+0x101/0x160 [ 1155.737841] ? kobject_add_internal+0x4b0/0x4b0 [ 1155.737861] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 1155.737875] ? vsnprintf+0x368/0x1b10 [ 1155.737901] gfs2_sys_fs_add+0x210/0x500 [ 1155.755949] ? recover_store+0x1a0/0x1a0 [ 1155.755980] ? snprintf+0xbb/0xf0 [ 1155.755995] ? vsprintf+0x30/0x40 [ 1155.766982] ? set_blocksize+0x2bf/0x340 [ 1155.771054] ? memcpy+0x46/0x50 [ 1155.774356] fill_super+0x894/0x1990 [ 1155.774384] ? gfs2_online_uevent+0x2d0/0x2d0 [ 1155.782578] ? snprintf+0xbb/0xf0 [ 1155.786034] ? vsprintf+0x40/0x40 [ 1155.789518] ? ns_capable_common+0x141/0x170 [ 1155.793969] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 1155.798997] ? set_blocksize+0x2bf/0x340 [ 1155.803075] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 1155.808625] gfs2_mount+0x5db/0x6ee [ 1155.812280] ? fill_super+0x1990/0x1990 [ 1155.816289] ? vfs_parse_fs_string+0x1c5/0x2b0 [ 1155.816307] ? vfs_parse_fs_param+0x4b0/0x4b0 [ 1155.825397] ? fill_super+0x1990/0x1990 [ 1155.825413] legacy_get_tree+0xf2/0x200 [ 1155.825433] vfs_get_tree+0x123/0x450 [ 1155.825452] do_mount+0x1622/0x2fa0 [ 1155.840804] ? copy_mount_string+0x40/0x40 [ 1155.845113] ? kmem_cache_alloc_trace+0x354/0x760 [ 1155.849978] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 1155.855520] ? copy_mount_options+0x30e/0x440 [ 1155.860045] ksys_mount+0xdb/0x150 [ 1155.863611] __x64_sys_mount+0xbe/0x150 [ 1155.867612] do_syscall_64+0x1a3/0x800 [ 1155.871513] ? syscall_return_slowpath+0x5f0/0x5f0 [ 1155.876475] ? prepare_exit_to_usermode+0x232/0x3b0 [ 1155.881520] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 1155.886376] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 1155.891562] RIP: 0033:0x45a93a [ 1155.894757] Code: b8 a6 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 ed 8c fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 0f 83 ca 8c fb ff c3 66 0f 1f 84 00 00 00 00 00 [ 1155.913654] RSP: 002b:00007ff699fe9a88 EFLAGS: 00000206 ORIG_RAX: 00000000000000a5 [ 1155.921361] RAX: ffffffffffffffda RBX: 00007ff699fe9b30 RCX: 000000000045a93a [ 1155.928623] RDX: 00007ff699fe9ad0 RSI: 0000000020000200 RDI: 00007ff699fe9af0 [ 1155.935889] RBP: 0000000020000200 R08: 00007ff699fe9b30 R09: 00007ff699fe9ad0 [ 1155.943170] R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000003 [ 1155.950464] R13: 0000000000000000 R14: 00000000004db380 R15: 00000000ffffffff 03:48:15 executing program 3: syz_mount_image$gfs2(&(0x7f0000000140)='gfs2\x00', &(0x7f0000000200)='./file0\x00', 0xe4ffffff00000000, 0x0, 0x0, 0x0, &(0x7f00000003c0)={[{@locktable={'locktable', 0x3d, '/'}}, {@lockproto_nolock='lockproto=lock_nolock'}]}) 03:48:15 executing program 5: r0 = socket$inet6(0xa, 0x2, 0x0) connect$inet6(r0, &(0x7f0000000180)={0xa, 0xfe80, 0x0, @local, 0x4}, 0x1c) 03:48:15 executing program 1: r0 = openat$kvm(0xffffffffffffff9c, &(0x7f0000000140)='/dev/kvm\x00', 0x0, 0x0) r1 = ioctl$KVM_CREATE_VM(r0, 0xae01, 0x0) r2 = ioctl$KVM_CREATE_VCPU(r1, 0xae41, 0x0) ioctl$KVM_SET_USER_MEMORY_REGION(r1, 0x4020ae46, &(0x7f0000000400)={0x0, 0x3, 0x0, 0x2000, &(0x7f0000000000/0x2000)=nil}) syz_kvm_setup_cpu$x86(r1, 0xffffffffffffffff, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x0, 0x0, 0xfffffffffffffe78) sendmmsg$unix(0xffffffffffffffff, &(0x7f0000002780)=[{0x0, 0x0, &(0x7f0000001d00)=[{&(0x7f0000000bc0)="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", 0x3c5}], 0x1}], 0x1, 0x0) ioctl$KVM_REGISTER_COALESCED_MMIO(r1, 0x4010ae67, &(0x7f00000000c0)={0x0, 0x15200}) r3 = openat$pfkey(0xffffffffffffff9c, &(0x7f0000000000)='/proc/self/net/pfkey\x00', 0x0, 0x0) ioctl$TIOCLINUX2(r3, 0x541c, &(0x7f0000000040)={0x2, 0x5, 0x1ff, 0xff, 0x5, 0x2}) syz_kvm_setup_cpu$x86(0xffffffffffffffff, r2, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x8, 0x0, 0x0) ioctl$KVM_RUN(r2, 0xae80, 0x0) [ 1156.023357] kobject_add_internal failed for _ with -EEXIST, don't try to register things with the same name in the same directory. [ 1156.035583] gfs2: fsid=_: error -17 adding sysfs files 03:48:15 executing program 0: socketpair$unix(0x1, 0x1, 0x0, &(0x7f0000000440)={0xffffffffffffffff, 0xffffffffffffffff}) ioctl$PERF_EVENT_IOC_ENABLE(r0, 0x8912, 0x400200) r1 = openat$kvm(0xffffffffffffff9c, &(0x7f00000000c0)='/dev/kvm\x00', 0x0, 0x0) r2 = openat$dlm_monitor(0xffffffffffffff9c, &(0x7f0000000340)='/dev/dlm-monitor\x00', 0x0, 0x0) setsockopt$bt_hci_HCI_TIME_STAMP(r2, 0x0, 0x3, &(0x7f0000000100)=0x4, 0x4) r3 = ioctl$KVM_CREATE_VM(r1, 0xae01, 0x0) r4 = ioctl$KVM_CREATE_VCPU(r3, 0xae41, 0x0) syz_kvm_setup_cpu$x86(r3, 0xffffffffffffffff, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x0, 0x0, 0x0) syz_kvm_setup_cpu$x86(0xffffffffffffffff, r4, &(0x7f0000000000/0x18000)=nil, &(0x7f00000001c0)=[@text64={0x40, &(0x7f0000000040)="b9800000c00f3235001000000f30f24c0f2c49e8426dc4027d3493b80800003626660f7e676d660f1678b06cc403f9dfbeb70000000bc7442400f5000000c744240284d178bcff1c24f2f347dbe1", 0x4e}], 0x1, 0x48, 0x0, 0x0) pipe2(&(0x7f0000000000), 0x0) ioctl$KVM_RUN(r4, 0xae80, 0x0) 03:48:15 executing program 2: r0 = socket$inet(0x2, 0x4000000000000001, 0x0) setsockopt$inet_tcp_int(r0, 0x6, 0x80000000000002, &(0x7f0000000040)=0x74, 0x4) bind$inet(r0, &(0x7f0000000180)={0x2, 0x4e23, @multicast1}, 0x10) sendto$inet(r0, 0x0, 0x0, 0x200007fd, &(0x7f0000e68000)={0x2, 0x4e23, @local}, 0x10) write$binfmt_elf64(r0, &(0x7f00000012c0)=ANY=[@ANYBLOB="7f454c4601000500000000000000000000000300000000008b0300000000000040000000000000001901000000000000cf0000000100380002000100c70a010151e57474090e00000300000000000000ff0f00000000000000000080000000000600000000000000db0a000000000000d616000000000000b27e2b7d90630ff79f047e22afbe739a615db84a0058ce3572d99ea10910ec6bf6ba57404bb35b88227009c25cfc6802a2b9a17a285b27f3e6a66f3f7d712cc9d3daf7e5b378f1f1aea47383c1b2213503c6bf3f6e73ca712d88eb1852562e8796913d6a3236e2532dcdade6597d5c20651c4520ce1ade1bd110422aba4e4364e2cf9589e661ad0ff96218d75fe22a793040b35188c96f2ca9fe626500000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000f52687e000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000901a50be12753000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"], 0x209) mmap(&(0x7f0000000000/0xb36000)=nil, 0xb36000, 0x3, 0x8031, 0xffffffffffffffff, 0x0) sendmmsg$inet_sctp(r0, &(0x7f0000002600)=[{0x0, 0x500, &(0x7f0000000240)=[{&(0x7f0000000380)="d4", 0x1}], 0x1}], 0x1, 0x0) 03:48:15 executing program 5: r0 = socket$inet6(0xa, 0x2, 0x0) connect$inet6(r0, &(0x7f0000000180)={0xa, 0x5, 0x0, @local, 0x4}, 0x1c) 03:48:15 executing program 4: syz_mount_image$gfs2(&(0x7f0000000140)='gfs2\x00', &(0x7f0000000200)='./file0\x00', 0x1a00, 0x0, 0x0, 0x0, &(0x7f00000003c0)={[{@locktable={'locktable', 0x3d, '/'}}, {@lockproto_nolock='lockproto=lock_nolock'}]}) socketpair$unix(0x1, 0x1, 0x0, &(0x7f0000000180)) [ 1156.245510] gfs2: fsid=_: Trying to join cluster "lock_nolock", "_" [ 1156.251951] gfs2: fsid=_: Now mounting FS... 03:48:16 executing program 5: r0 = socket$inet6(0xa, 0x2, 0x0) connect$inet6(r0, &(0x7f0000000180)={0xa, 0x400000000000000, 0x0, @local, 0x4}, 0x1c) [ 1156.289105] sysfs: cannot create duplicate filename '/fs/gfs2/_' [ 1156.340726] gfs2: not a GFS2 filesystem [ 1156.350962] CPU: 1 PID: 23362 Comm: syz-executor4 Not tainted 4.20.0-next-20190103 #4 [ 1156.358944] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 1156.368314] Call Trace: [ 1156.370918] dump_stack+0x1db/0x2d0 [ 1156.374567] ? dump_stack_print_info.cold+0x20/0x20 [ 1156.374618] ? _raw_spin_unlock_irqrestore+0xa4/0xe0 [ 1156.374646] sysfs_warn_dup.cold+0x1c/0x31 [ 1156.374682] sysfs_create_dir_ns+0x2ce/0x330 [ 1156.374726] ? sysfs_create_mount_point+0xa0/0xa0 [ 1156.374746] ? do_raw_spin_trylock+0x270/0x270 [ 1156.402931] kobject_add_internal.cold+0x129/0x6d8 [ 1156.407884] ? kobj_ns_type_registered+0x60/0x60 [ 1156.412640] ? kfree_const+0x59/0x70 [ 1156.416356] ? rcu_read_lock_sched_held+0x110/0x130 [ 1156.421379] ? kfree+0x1fa/0x230 [ 1156.424760] ? kfree_const+0x5e/0x70 [ 1156.428506] kobject_init_and_add+0x101/0x160 [ 1156.433029] ? kobject_add_internal+0x4b0/0x4b0 [ 1156.437726] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 1156.443259] ? vsnprintf+0x368/0x1b10 [ 1156.447098] gfs2_sys_fs_add+0x210/0x500 [ 1156.451176] ? recover_store+0x1a0/0x1a0 [ 1156.455252] ? snprintf+0xbb/0xf0 [ 1156.458702] ? vsprintf+0x30/0x40 [ 1156.462156] ? set_blocksize+0x2bf/0x340 [ 1156.466217] ? memcpy+0x46/0x50 [ 1156.469510] fill_super+0x894/0x1990 [ 1156.473227] ? gfs2_online_uevent+0x2d0/0x2d0 [ 1156.477731] ? snprintf+0xbb/0xf0 [ 1156.481175] ? vsprintf+0x40/0x40 [ 1156.484628] ? ns_capable_common+0x141/0x170 [ 1156.489030] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 1156.494042] ? set_blocksize+0x2bf/0x340 [ 1156.498121] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 1156.503673] gfs2_mount+0x5db/0x6ee [ 1156.507297] ? fill_super+0x1990/0x1990 [ 1156.511296] ? vfs_parse_fs_string+0x1c5/0x2b0 [ 1156.515882] ? vfs_parse_fs_param+0x4b0/0x4b0 [ 1156.520373] ? fill_super+0x1990/0x1990 [ 1156.524353] legacy_get_tree+0xf2/0x200 [ 1156.528865] vfs_get_tree+0x123/0x450 [ 1156.532681] do_mount+0x1622/0x2fa0 [ 1156.536313] ? copy_mount_string+0x40/0x40 [ 1156.540542] ? kmem_cache_alloc_trace+0x354/0x760 [ 1156.545399] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 1156.550943] ? copy_mount_options+0x30e/0x440 [ 1156.555435] ksys_mount+0xdb/0x150 [ 1156.558985] __x64_sys_mount+0xbe/0x150 [ 1156.562960] do_syscall_64+0x1a3/0x800 [ 1156.566864] ? syscall_return_slowpath+0x5f0/0x5f0 [ 1156.572438] ? prepare_exit_to_usermode+0x232/0x3b0 [ 1156.577470] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 1156.582324] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 1156.587527] RIP: 0033:0x45a93a [ 1156.590750] Code: b8 a6 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 ed 8c fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 0f 83 ca 8c fb ff c3 66 0f 1f 84 00 00 00 00 00 [ 1156.609639] RSP: 002b:00007ff699fe9a88 EFLAGS: 00000206 ORIG_RAX: 00000000000000a5 [ 1156.617346] RAX: ffffffffffffffda RBX: 00007ff699fe9b30 RCX: 000000000045a93a [ 1156.624608] RDX: 00007ff699fe9ad0 RSI: 0000000020000200 RDI: 00007ff699fe9af0 [ 1156.631864] RBP: 0000000020000200 R08: 00007ff699fe9b30 R09: 00007ff699fe9ad0 03:48:16 executing program 5: r0 = socket$inet6(0xa, 0x2, 0x0) connect$inet6(r0, &(0x7f0000000180)={0xa, 0x6000000, 0x0, @local, 0x4}, 0x1c) [ 1156.639120] R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000003 [ 1156.646375] R13: 0000000000000000 R14: 00000000004db380 R15: 00000000ffffffff [ 1156.655465] gfs2: fsid=_: can't read superblock [ 1156.658455] kobject_add_internal failed for _ with -EEXIST, don't try to register things with the same name in the same directory. [ 1156.660447] gfs2: fsid=_: can't read superblock: -22 [ 1156.672951] gfs2: fsid=_: error -17 adding sysfs files 03:48:16 executing program 1: r0 = openat$kvm(0xffffffffffffff9c, &(0x7f0000000140)='/dev/kvm\x00', 0x0, 0x0) r1 = ioctl$KVM_CREATE_VM(r0, 0xae01, 0x0) r2 = ioctl$KVM_CREATE_VCPU(r1, 0xae41, 0x0) ioctl$KVM_SET_USER_MEMORY_REGION(r1, 0x4020ae46, &(0x7f0000000400)={0x0, 0x3, 0x0, 0x2000, &(0x7f0000000000/0x2000)=nil}) syz_kvm_setup_cpu$x86(r1, 0xffffffffffffffff, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x0, 0x0, 0xfffffffffffffe78) sendmmsg$unix(0xffffffffffffffff, &(0x7f0000002780)=[{0x0, 0x0, &(0x7f0000001d00)=[{&(0x7f0000000bc0)="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", 0x3c5}], 0x1}], 0x49249249249284f, 0x0) ioctl$KVM_REGISTER_COALESCED_MMIO(r1, 0x4010ae67, &(0x7f00000000c0)={0x0, 0x15200}) syz_kvm_setup_cpu$x86(0xffffffffffffffff, r2, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x8, 0x0, 0x0) ioctl$KVM_RUN(r2, 0xae80, 0x0) [ 1156.780896] sysfs: cannot create duplicate filename '/fs/gfs2/_' [ 1156.805921] CPU: 1 PID: 23362 Comm: syz-executor4 Not tainted 4.20.0-next-20190103 #4 [ 1156.813894] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 1156.823240] Call Trace: [ 1156.825834] dump_stack+0x1db/0x2d0 [ 1156.829475] ? dump_stack_print_info.cold+0x20/0x20 [ 1156.834498] ? _raw_spin_unlock_irqrestore+0xa4/0xe0 [ 1156.839620] sysfs_warn_dup.cold+0x1c/0x31 [ 1156.843866] sysfs_create_dir_ns+0x2ce/0x330 [ 1156.848280] ? sysfs_create_mount_point+0xa0/0xa0 [ 1156.853128] ? do_raw_spin_trylock+0x270/0x270 [ 1156.857730] kobject_add_internal.cold+0x129/0x6d8 [ 1156.862665] ? kobj_ns_type_registered+0x60/0x60 [ 1156.867422] ? kfree_const+0x59/0x70 [ 1156.871162] ? rcu_read_lock_sched_held+0x110/0x130 [ 1156.876200] ? kfree+0x1fa/0x230 [ 1156.879611] ? kfree_const+0x5e/0x70 [ 1156.883332] kobject_init_and_add+0x101/0x160 [ 1156.887836] ? kobject_add_internal+0x4b0/0x4b0 [ 1156.892511] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 1156.898073] ? vsnprintf+0x368/0x1b10 [ 1156.901898] gfs2_sys_fs_add+0x210/0x500 [ 1156.905965] ? recover_store+0x1a0/0x1a0 [ 1156.910030] ? snprintf+0xbb/0xf0 [ 1156.913489] ? vsprintf+0x30/0x40 [ 1156.916943] ? set_blocksize+0x2bf/0x340 [ 1156.921024] ? memcpy+0x46/0x50 [ 1156.924362] fill_super+0x894/0x1990 [ 1156.928102] ? gfs2_online_uevent+0x2d0/0x2d0 [ 1156.932598] ? snprintf+0xbb/0xf0 [ 1156.936050] ? vsprintf+0x40/0x40 [ 1156.939547] ? ns_capable_common+0x141/0x170 [ 1156.943953] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 1156.948980] ? set_blocksize+0x2bf/0x340 [ 1156.953047] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 1156.958596] gfs2_mount+0x5db/0x6ee [ 1156.958614] ? fill_super+0x1990/0x1990 [ 1156.958651] ? vfs_parse_fs_string+0x1c5/0x2b0 [ 1156.966221] ? vfs_parse_fs_param+0x4b0/0x4b0 [ 1156.966236] ? fill_super+0x1990/0x1990 [ 1156.966250] legacy_get_tree+0xf2/0x200 [ 1156.966271] vfs_get_tree+0x123/0x450 [ 1156.966289] do_mount+0x1622/0x2fa0 [ 1156.966315] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 1156.966336] ? copy_mount_string+0x40/0x40 [ 1156.979394] ? copy_mount_options+0x1de/0x440 [ 1156.979410] ? __sanitizer_cov_trace_pc+0x48/0x50 [ 1156.979424] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 1156.979439] ? copy_mount_options+0x30e/0x440 [ 1156.987220] ksys_mount+0xdb/0x150 [ 1156.987240] __x64_sys_mount+0xbe/0x150 [ 1156.987271] do_syscall_64+0x1a3/0x800 03:48:16 executing program 5: r0 = socket$inet6(0xa, 0x2, 0x0) connect$inet6(r0, &(0x7f0000000180)={0xa, 0x4000000, 0x0, @local, 0x4}, 0x1c) [ 1156.987301] ? syscall_return_slowpath+0x5f0/0x5f0 [ 1156.987318] ? prepare_exit_to_usermode+0x232/0x3b0 [ 1156.995694] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 1156.995732] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 1156.995758] RIP: 0033:0x45a93a [ 1156.995774] Code: b8 a6 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 ed 8c fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 0f 83 ca 8c fb ff c3 66 0f 1f 84 00 00 00 00 00 [ 1156.995782] RSP: 002b:00007ff699fe9a88 EFLAGS: 00000206 ORIG_RAX: 00000000000000a5 03:48:16 executing program 5: r0 = socket$inet6(0xa, 0x2, 0x0) connect$inet6(r0, &(0x7f0000000180)={0xa, 0x900000000000000, 0x0, @local, 0x4}, 0x1c) [ 1156.995796] RAX: ffffffffffffffda RBX: 00007ff699fe9b30 RCX: 000000000045a93a [ 1156.995805] RDX: 00007ff699fe9ad0 RSI: 0000000020000200 RDI: 00007ff699fe9af0 [ 1156.995814] RBP: 0000000020000200 R08: 00007ff699fe9b30 R09: 00007ff699fe9ad0 [ 1156.995830] R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000003 [ 1156.995853] R13: 0000000000000000 R14: 00000000004db380 R15: 00000000ffffffff 03:48:16 executing program 3: syz_mount_image$gfs2(&(0x7f0000000140)='gfs2\x00', &(0x7f0000000200)='./file0\x00', 0xf000, 0x0, 0x0, 0x0, &(0x7f00000003c0)={[{@locktable={'locktable', 0x3d, '/'}}, {@lockproto_nolock='lockproto=lock_nolock'}]}) 03:48:16 executing program 0: socketpair$unix(0x1, 0x1, 0x0, &(0x7f0000000440)={0xffffffffffffffff, 0xffffffffffffffff}) ioctl$PERF_EVENT_IOC_ENABLE(r0, 0x8912, 0x400200) r1 = openat$kvm(0xffffffffffffff9c, &(0x7f00000000c0)='/dev/kvm\x00', 0x0, 0x0) openat$dlm_monitor(0xffffffffffffff9c, &(0x7f0000000340)='/dev/dlm-monitor\x00', 0x0, 0x0) r2 = ioctl$KVM_CREATE_VM(r1, 0xae01, 0x0) r3 = ioctl$KVM_CREATE_VCPU(r2, 0xae41, 0x0) syz_kvm_setup_cpu$x86(r2, 0xffffffffffffffff, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x0, 0x0, 0x0) syz_kvm_setup_cpu$x86(0xffffffffffffffff, r3, &(0x7f0000000000/0x18000)=nil, &(0x7f00000001c0)=[@text64={0x40, &(0x7f0000000040)="b9800000c00f3235001000000f30f24c0f2c49e8426dc4027d3493b80800003626660f7e676d660f1678b06cc403f9dfbeb70000000bc7442400f5000000c744240284d178bcff1c24f2f347dbe1", 0x4e}], 0x1, 0x48, 0x0, 0x0) pipe2(&(0x7f0000000000)={0xffffffffffffffff}, 0x0) ioctl$KVM_RUN(r4, 0xae80, 0x0) prctl$PR_GET_TID_ADDRESS(0x28, &(0x7f0000000100)) 03:48:16 executing program 5: r0 = socket$inet6(0xa, 0x2, 0x0) connect$inet6(r0, &(0x7f0000000180)={0xa, 0x900, 0x0, @local, 0x4}, 0x1c) 03:48:17 executing program 5: r0 = socket$inet6(0xa, 0x2, 0x0) connect$inet6(r0, &(0x7f0000000180)={0xa, 0xa00, 0x0, @local, 0x4}, 0x1c) [ 1157.299042] gfs2: fsid=_: Trying to join cluster "lock_nolock", "_" [ 1157.333849] gfs2: fsid=_: Now mounting FS... [ 1157.355736] attempt to access beyond end of device 03:48:17 executing program 2: r0 = socket$inet(0x2, 0x4000000000000001, 0x0) setsockopt$inet_tcp_int(r0, 0x6, 0x80000000000002, &(0x7f0000000040)=0x74, 0x4) bind$inet(r0, &(0x7f0000000180)={0x2, 0x4e23, @multicast1}, 0x10) sendto$inet(r0, 0x0, 0x0, 0x200007fd, &(0x7f0000e68000)={0x2, 0x4e23, @local}, 0x10) write$binfmt_elf64(r0, &(0x7f00000012c0)=ANY=[@ANYBLOB="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"], 0x209) mmap(&(0x7f0000000000/0xb36000)=nil, 0xb36000, 0x3, 0x8031, 0xffffffffffffffff, 0x0) sendmmsg$inet_sctp(r0, &(0x7f0000002600)=[{0x0, 0x240, &(0x7f0000000240)=[{&(0x7f0000000380)="d4", 0x1}], 0x1}], 0x1, 0x0) [ 1157.395959] loop3: rw=4096, want=136, limit=120 03:48:17 executing program 1: r0 = openat$kvm(0xffffffffffffff9c, &(0x7f0000000140)='/dev/kvm\x00', 0x0, 0x0) r1 = dup(r0) getsockname$inet6(r1, &(0x7f0000000000)={0xa, 0x0, 0x0, @dev}, &(0x7f0000000040)=0x1c) r2 = ioctl$KVM_CREATE_VM(r0, 0xae01, 0x0) r3 = ioctl$KVM_CREATE_VCPU(r2, 0xae41, 0x0) ioctl$KVM_SET_USER_MEMORY_REGION(r2, 0x4020ae46, &(0x7f0000000400)={0x0, 0x3, 0x0, 0x2000, &(0x7f0000000000/0x2000)=nil}) syz_kvm_setup_cpu$x86(r2, 0xffffffffffffffff, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x0, 0x0, 0xfffffffffffffe78) sendmmsg$unix(0xffffffffffffffff, &(0x7f0000002780)=[{0x0, 0x0, &(0x7f0000001d00)=[{&(0x7f0000000bc0)="b474ac0450ac6a2ff5ba4c1a19990e818d6fb646a5739e09c636550fdd39d0316e215a5a9427ac426da0b375844fb7f5ee5130d0b57cdab9af6f5f0d39c1787ec9ecde6263664c6a9859b7a0c4cbc99a05184da950f370cf65a18bff7975c0c12ca4227baa2164d031a5472d7f581c6f7eedd103d8fc89b6b4b52e5d3da0817eec8c57f722e356068b99a056ab6a693b9eebe38d75170491e07f9f69573b02b1a048f29e39cd24fed99e8606ffcbe4f617f48370ec62bd327cdfb9da8e8fef232b2e8f8f6868bb1781eab4c294befd65d9a336123bd34be8f256b5fc0420aa6e930f292a9a06365daaebd0bcaaaf5e0c12167aad0c62a48666383ee58b37df8077c5d2d5298d5247e240a78ff2543147129775f6d4a872df80d9da66c2a0a169df65141cbe88b1e280d60f6e11b25a0b5bb1bdd430378761d547f3ff7e42cc84c849e66004e30905d908e352a53f95bca84a68a6ce5ee82b69c939a196a7060bee28d8dee1ed52ae04b228bedf9302df44cc957780e42c2784d18e3695ee5e73dbe385331494af3cbcf8952e85469e9566c32692c0ceae8dab7b9553b5e8aa66edbad2ed828ba2a665a48a2822d9dc538863aea705c926c5a12fee84db545a36a13281e09e82c06211cc195cb4409bedfb7cf22f6c01fba9720bc4f447da73bb95bab6c056ce51bbc9d5b6622c54152e853f9639d2db2a5992e0f0e8f77a2e5efcfd139869cbdc902622399035d6ab8c22e33605be6850356be97ac05588720e1e215fbf5cb6633f0894e0a4dbd28708cac77792a31b00f47d18cebcb9114f1b0ffd66b587c5f9ba086fc530c6a0ac561068de208f18a3b6adc47f04bd63bd4a31544eb953398ddee5b5e4533aa529947aa46e7e517ff719e559c106f8afc570019f272a9f2d2699c7384612854de44dc40bb33aafee4e5fab1c06ceeffec56782452589f80c3946e6631c591e7f82af7e3a6422e0f35b0847f0a3049ee29b09f8aadf59c96a99576be85d6ddcf8c4d82373355add27397517402a56fd36bf877a53731413c30786431262705fb01511a778482cd85b60323b683e0e9d2f06b57678ddcf06f6da03f818e7f0b4db7045527f6e00fa26fe586fe0fcc72024fad6bab1739f6d7980d21f1fac0e7f53ee4cb254349b93a89f5695be91e5c586411b18f3f11298d979abdf4dd4796b181e623189aa73182c4c5ff346545168a520241ce23e08ade26085f654537258efaacfe1a64b2261c5180eb7c01ca6f4dc0f08f98ec12c06036278eff4c8d3b852bb2022be745861268ffbe0bb37c45452d2ac97aa6cb81db9f428688e6eab0e85ba6eb2eaecf4e8e137a2101f04b201258a71d857194610", 0x3c5}], 0x1}], 0x1, 0x0) ioctl$KVM_REGISTER_COALESCED_MMIO(r2, 0x4010ae67, &(0x7f00000000c0)={0x0, 0x15200}) syz_kvm_setup_cpu$x86(0xffffffffffffffff, r3, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x8, 0x0, 0x0) ioctl$KVM_RUN(r3, 0xae80, 0x0) [ 1157.427566] gfs2: error 10 reading superblock [ 1157.468803] gfs2: fsid=_: can't read superblock [ 1157.492818] gfs2: fsid=_: can't read superblock: -5 [ 1157.572807] kobject_add_internal failed for _ with -EEXIST, don't try to register things with the same name in the same directory. [ 1157.605033] gfs2: fsid=_: error -17 adding sysfs files 03:48:17 executing program 4: syz_mount_image$gfs2(&(0x7f0000000140)='gfs2\x00', &(0x7f0000000200)='./file0\x00', 0x7400, 0x0, 0x0, 0x0, &(0x7f00000003c0)={[{@locktable={'locktable', 0x3d, '/'}}, {@lockproto_nolock='lockproto=lock_nolock'}]}) socketpair$unix(0x1, 0x1, 0x0, &(0x7f0000000180)) 03:48:17 executing program 5: r0 = socket$inet6(0xa, 0x2, 0x0) connect$inet6(r0, &(0x7f0000000180)={0xa, 0x100000000000000, 0x0, @local, 0x4}, 0x1c) 03:48:17 executing program 0: socketpair$unix(0x1, 0x1, 0x0, &(0x7f0000000440)={0xffffffffffffffff, 0xffffffffffffffff}) ioctl$PERF_EVENT_IOC_ENABLE(r0, 0x8912, 0x400200) r1 = openat$kvm(0xffffffffffffff9c, &(0x7f00000000c0)='/dev/kvm\x00', 0x0, 0x0) openat$dlm_monitor(0xffffffffffffff9c, &(0x7f0000000340)='/dev/dlm-monitor\x00', 0x0, 0x0) r2 = ioctl$KVM_CREATE_VM(r1, 0xae01, 0x0) r3 = ioctl$KVM_CREATE_VCPU(r2, 0xae41, 0x0) syz_kvm_setup_cpu$x86(r2, 0xffffffffffffffff, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x0, 0x0, 0x0) syz_kvm_setup_cpu$x86(0xffffffffffffffff, r3, &(0x7f0000000000/0x18000)=nil, &(0x7f00000001c0)=[@text64={0x40, &(0x7f0000000040)="b9800000c00f3235001000000f30f24c0f2c49e8426dc4027d3493b80800003626660f7e676d660f1678b06cc403f9dfbeb70000000bc7442400f5000000c744240284d178bcff1c24f2f347dbe1", 0x4e}], 0x1, 0x48, 0x0, 0x0) pipe2(&(0x7f0000000000)={0xffffffffffffffff, 0xffffffffffffffff}, 0x0) ioctl$IMGETCOUNT(r4, 0x80044943, &(0x7f0000000140)) ioctl$KVM_RUN(r3, 0xae80, 0x0) connect$tipc(r5, &(0x7f0000000100)=@nameseq={0x1e, 0x1, 0x1, {0x42, 0x1, 0x4}}, 0x10) [ 1157.678252] gfs2: fsid=_: Trying to join cluster "lock_nolock", "_" [ 1157.706798] gfs2: fsid=_: Now mounting FS... 03:48:17 executing program 5: r0 = socket$inet6(0xa, 0x2, 0x0) connect$inet6(r0, &(0x7f0000000180)={0xa, 0x600, 0x0, @local, 0x4}, 0x1c) [ 1157.723894] attempt to access beyond end of device [ 1157.747174] loop3: rw=4096, want=136, limit=120 [ 1157.798891] gfs2: error 10 reading superblock [ 1157.817337] gfs2: fsid=_: can't read superblock 03:48:17 executing program 1: r0 = openat$kvm(0xffffffffffffff9c, &(0x7f0000000140)='/dev/kvm\x00', 0x0, 0x0) r1 = ioctl$KVM_CREATE_VM(r0, 0xae01, 0x0) r2 = ioctl$KVM_CREATE_VCPU(r1, 0xae41, 0x0) ioctl$KVM_SET_USER_MEMORY_REGION(r1, 0x4020ae46, &(0x7f0000000400)={0x0, 0x3, 0x0, 0x2000, &(0x7f0000000000/0x2000)=nil}) fallocate(r1, 0x10, 0x2, 0x1) syz_kvm_setup_cpu$x86(r1, 0xffffffffffffffff, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x0, 0x0, 0xfffffffffffffe78) sendmmsg$unix(0xffffffffffffffff, &(0x7f0000002780)=[{0x0, 0x0, &(0x7f0000001d00)=[{&(0x7f0000000bc0)="b474ac0450ac6a2ff5ba4c1a19990e818d6fb646a5739e09c636550fdd39d0316e215a5a9427ac426da0b375844fb7f5ee5130d0b57cdab9af6f5f0d39c1787ec9ecde6263664c6a9859b7a0c4cbc99a05184da950f370cf65a18bff7975c0c12ca4227baa2164d031a5472d7f581c6f7eedd103d8fc89b6b4b52e5d3da0817eec8c57f722e356068b99a056ab6a693b9eebe38d75170491e07f9f69573b02b1a048f29e39cd24fed99e8606ffcbe4f617f48370ec62bd327cdfb9da8e8fef232b2e8f8f6868bb1781eab4c294befd65d9a336123bd34be8f256b5fc0420aa6e930f292a9a06365daaebd0bcaaaf5e0c12167aad0c62a48666383ee58b37df8077c5d2d5298d5247e240a78ff2543147129775f6d4a872df80d9da66c2a0a169df65141cbe88b1e280d60f6e11b25a0b5bb1bdd430378761d547f3ff7e42cc84c849e66004e30905d908e352a53f95bca84a68a6ce5ee82b69c939a196a7060bee28d8dee1ed52ae04b228bedf9302df44cc957780e42c2784d18e3695ee5e73dbe385331494af3cbcf8952e85469e9566c32692c0ceae8dab7b9553b5e8aa66edbad2ed828ba2a665a48a2822d9dc538863aea705c926c5a12fee84db545a36a13281e09e82c06211cc195cb4409bedfb7cf22f6c01fba9720bc4f447da73bb95bab6c056ce51bbc9d5b6622c54152e853f9639d2db2a5992e0f0e8f77a2e5efcfd139869cbdc902622399035d6ab8c22e33605be6850356be97ac05588720e1e215fbf5cb6633f0894e0a4dbd28708cac77792a31b00f47d18cebcb9114f1b0ffd66b587c5f9ba086fc530c6a0ac561068de208f18a3b6adc47f04bd63bd4a31544eb953398ddee5b5e4533aa529947aa46e7e517ff719e559c106f8afc570019f272a9f2d2699c7384612854de44dc40bb33aafee4e5fab1c06ceeffec56782452589f80c3946e6631c591e7f82af7e3a6422e0f35b0847f0a3049ee29b09f8aadf59c96a99576be85d6ddcf8c4d82373355add27397517402a56fd36bf877a53731413c30786431262705fb01511a778482cd85b60323b683e0e9d2f06b57678ddcf06f6da03f818e7f0b4db7045527f6e00fa26fe586fe0fcc72024fad6bab1739f6d7980d21f1fac0e7f53ee4cb254349b93a89f5695be91e5c586411b18f3f11298d979abdf4dd4796b181e623189aa73182c4c5ff346545168a520241ce23e08ade26085f654537258efaacfe1a64b2261c5180eb7c01ca6f4dc0f08f98ec12c06036278eff4c8d3b852bb2022be745861268ffbe0bb37c45452d2ac97aa6cb81db9f428688e6eab0e85ba6eb2eaecf4e8e137a2101f04b201258a71d857194610", 0x3c5}], 0x1}], 0x1, 0x0) ioctl$KVM_REGISTER_COALESCED_MMIO(r1, 0x4010ae67, &(0x7f00000000c0)={0x0, 0x15200}) syz_kvm_setup_cpu$x86(0xffffffffffffffff, r2, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x8, 0x0, 0x0) ioctl$KVM_RUN(r2, 0xae80, 0x0) [ 1157.840614] sysfs: cannot create duplicate filename '/fs/gfs2/_' [ 1157.845930] gfs2: fsid=_: can't read superblock: -5 [ 1157.933473] CPU: 1 PID: 23428 Comm: syz-executor4 Not tainted 4.20.0-next-20190103 #4 [ 1157.941461] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 1157.950808] Call Trace: [ 1157.953419] dump_stack+0x1db/0x2d0 [ 1157.957154] ? dump_stack_print_info.cold+0x20/0x20 [ 1157.962206] ? _raw_spin_unlock_irqrestore+0xa4/0xe0 [ 1157.967323] sysfs_warn_dup.cold+0x1c/0x31 [ 1157.971573] sysfs_create_dir_ns+0x2ce/0x330 [ 1157.976000] ? sysfs_create_mount_point+0xa0/0xa0 [ 1157.980851] ? do_raw_spin_trylock+0x270/0x270 [ 1157.985464] kobject_add_internal.cold+0x129/0x6d8 [ 1157.990417] ? kobj_ns_type_registered+0x60/0x60 [ 1157.995231] ? kfree_const+0x59/0x70 [ 1157.998975] ? rcu_read_lock_sched_held+0x110/0x130 [ 1158.003993] ? kfree+0x1fa/0x230 [ 1158.007376] ? kfree_const+0x5e/0x70 [ 1158.011107] kobject_init_and_add+0x101/0x160 [ 1158.015618] ? kobject_add_internal+0x4b0/0x4b0 [ 1158.015638] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 1158.015652] ? vsnprintf+0x368/0x1b10 [ 1158.015676] gfs2_sys_fs_add+0x210/0x500 [ 1158.015690] ? recover_store+0x1a0/0x1a0 [ 1158.015719] ? snprintf+0xbb/0xf0 [ 1158.015732] ? vsprintf+0x30/0x40 [ 1158.015747] ? set_blocksize+0x2bf/0x340 [ 1158.029755] ? memcpy+0x46/0x50 [ 1158.044714] fill_super+0x894/0x1990 [ 1158.044741] ? gfs2_online_uevent+0x2d0/0x2d0 [ 1158.044763] ? snprintf+0xbb/0xf0 [ 1158.044776] ? vsprintf+0x40/0x40 [ 1158.044796] ? ns_capable_common+0x141/0x170 [ 1158.044810] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 1158.044830] ? set_blocksize+0x2bf/0x340 [ 1158.044859] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 1158.044875] gfs2_mount+0x5db/0x6ee [ 1158.089766] ? fill_super+0x1990/0x1990 [ 1158.093753] ? vfs_parse_fs_string+0x1c5/0x2b0 [ 1158.098328] ? vfs_parse_fs_param+0x4b0/0x4b0 [ 1158.102817] ? fill_super+0x1990/0x1990 [ 1158.106791] legacy_get_tree+0xf2/0x200 [ 1158.110762] vfs_get_tree+0x123/0x450 [ 1158.114557] do_mount+0x1622/0x2fa0 [ 1158.118186] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 1158.122941] ? copy_mount_string+0x40/0x40 [ 1158.127176] ? copy_mount_options+0x255/0x440 [ 1158.131663] ? copy_mount_options+0x1de/0x440 [ 1158.136157] ? __sanitizer_cov_trace_pc+0x26/0x50 [ 1158.141017] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 1158.146545] ? copy_mount_options+0x30e/0x440 [ 1158.151078] ksys_mount+0xdb/0x150 [ 1158.154633] __x64_sys_mount+0xbe/0x150 [ 1158.158608] do_syscall_64+0x1a3/0x800 [ 1158.162498] ? syscall_return_slowpath+0x5f0/0x5f0 [ 1158.167433] ? prepare_exit_to_usermode+0x232/0x3b0 [ 1158.172450] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 1158.177304] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 1158.182504] RIP: 0033:0x45a93a [ 1158.185689] Code: b8 a6 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 ed 8c fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 0f 83 ca 8c fb ff c3 66 0f 1f 84 00 00 00 00 00 [ 1158.204594] RSP: 002b:00007ff699fe9a88 EFLAGS: 00000206 ORIG_RAX: 00000000000000a5 [ 1158.212294] RAX: ffffffffffffffda RBX: 00007ff699fe9b30 RCX: 000000000045a93a [ 1158.219551] RDX: 00007ff699fe9ad0 RSI: 0000000020000200 RDI: 00007ff699fe9af0 [ 1158.226812] RBP: 0000000020000200 R08: 00007ff699fe9b30 R09: 00007ff699fe9ad0 03:48:17 executing program 5: r0 = socket$inet6(0xa, 0x2, 0x0) connect$inet6(r0, &(0x7f0000000180)={0xa, 0x4, 0x0, @local, 0x4}, 0x1c) [ 1158.234082] R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000003 [ 1158.241342] R13: 0000000000000000 R14: 00000000004db380 R15: 00000000ffffffff [ 1158.294484] kobject_add_internal failed for _ with -EEXIST, don't try to register things with the same name in the same directory. [ 1158.347331] gfs2: fsid=_: error -17 adding sysfs files 03:48:18 executing program 5: r0 = socket$inet6(0xa, 0x2, 0x0) connect$inet6(r0, &(0x7f0000000180)={0xa, 0xfffffff5, 0x0, @local, 0x4}, 0x1c) 03:48:18 executing program 3: syz_mount_image$gfs2(&(0x7f0000000140)='gfs2\x00', &(0x7f0000000200)='./file0\x00', 0x1d, 0x0, 0x0, 0x0, &(0x7f00000003c0)={[{@locktable={'locktable', 0x3d, '/'}}, {@lockproto_nolock='lockproto=lock_nolock'}]}) 03:48:18 executing program 2: r0 = socket$inet(0x2, 0x4000000000000001, 0x0) setsockopt$inet_tcp_int(r0, 0x6, 0x80000000000002, &(0x7f0000000040)=0x74, 0x4) bind$inet(r0, &(0x7f0000000180)={0x2, 0x4e23, @multicast1}, 0x10) sendto$inet(r0, 0x0, 0x0, 0x200007fd, &(0x7f0000e68000)={0x2, 0x4e23, @local}, 0x10) write$binfmt_elf64(r0, &(0x7f00000012c0)=ANY=[@ANYBLOB="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"], 0x209) mmap(&(0x7f0000000000/0xb36000)=nil, 0xb36000, 0x3, 0x8031, 0xffffffffffffffff, 0x0) sendmmsg$inet_sctp(r0, &(0x7f0000002600)=[{0x0, 0x3, &(0x7f0000000240)=[{&(0x7f0000000380)="d4", 0x1}], 0x1}], 0x1, 0x0) 03:48:18 executing program 1: r0 = openat$kvm(0xffffffffffffff9c, &(0x7f0000000140)='/dev/kvm\x00', 0x0, 0x0) r1 = ioctl$KVM_CREATE_VM(r0, 0xae01, 0x0) r2 = ioctl$KVM_CREATE_VCPU(r1, 0xae41, 0x0) ioctl$KVM_SET_USER_MEMORY_REGION(r1, 0x4020ae46, &(0x7f0000000400)={0x0, 0x3, 0x0, 0x2000, &(0x7f0000000000/0x2000)=nil}) syz_kvm_setup_cpu$x86(r1, 0xffffffffffffffff, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x0, 0x0, 0xfffffffffffffe78) sendmmsg$unix(0xffffffffffffffff, &(0x7f0000002780)=[{0x0, 0x0, &(0x7f0000001d00)=[{&(0x7f0000000bc0)="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", 0x3c5}], 0x1}], 0x1, 0x0) ioctl$KVM_REGISTER_COALESCED_MMIO(r1, 0x4010ae67, &(0x7f00000000c0)={0x0, 0x15200}) syz_kvm_setup_cpu$x86(0xffffffffffffffff, r2, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x8, 0x0, 0x0) ioctl$KVM_RUN(r2, 0xae80, 0x0) r3 = openat$vsock(0xffffffffffffff9c, &(0x7f0000000000)='/dev/vsock\x00', 0x4000, 0x0) write$RDMA_USER_CM_CMD_CREATE_ID(r3, &(0x7f0000000080)={0x0, 0x18, 0xfa00, {0x1, &(0x7f0000000040), 0x106}}, 0x20) 03:48:18 executing program 5: r0 = socket$inet6(0xa, 0x2, 0x0) connect$inet6(r0, &(0x7f0000000180)={0xa, 0xffffffff00000000, 0x0, @local, 0x4}, 0x1c) [ 1158.509121] gfs2: fsid=_: Trying to join cluster "lock_nolock", "_" [ 1158.560578] gfs2: fsid=_: Now mounting FS... [ 1158.587426] gfs2: not a GFS2 filesystem 03:48:18 executing program 0: socketpair$unix(0x1, 0x1, 0x0, &(0x7f0000000440)={0xffffffffffffffff, 0xffffffffffffffff}) ioctl$PERF_EVENT_IOC_ENABLE(r0, 0x8912, 0x400200) r1 = openat$kvm(0xffffffffffffff9c, &(0x7f00000000c0)='/dev/kvm\x00', 0x0, 0x0) openat$dlm_monitor(0xffffffffffffff9c, &(0x7f0000000340)='/dev/dlm-monitor\x00', 0x0, 0x0) r2 = ioctl$KVM_CREATE_VM(r1, 0xae01, 0x0) syz_kvm_setup_cpu$x86(r2, 0xffffffffffffffff, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x0, 0x0, 0x0) syz_kvm_setup_cpu$x86(0xffffffffffffffff, 0xffffffffffffffff, &(0x7f0000000000/0x18000)=nil, &(0x7f00000001c0)=[@text64={0x40, &(0x7f0000000040)="b9800000c00f3235001000000f30f24c0f2c49e8426dc4027d3493b80800003626660f7e676d660f1678b06cc403f9dfbeb70000000bc7442400f5000000c744240284d178bcff1c24f2f347dbe1", 0x4e}], 0x1, 0x48, 0x0, 0x0) pipe2(&(0x7f0000000000)={0xffffffffffffffff}, 0x0) write$FUSE_LSEEK(r3, &(0x7f0000000100)={0x18, 0xfffffffffffffffe, 0x5, {0xdd}}, 0x18) ioctl$KVM_RUN(0xffffffffffffffff, 0xae80, 0x0) [ 1158.624563] gfs2: fsid=_: can't read superblock [ 1158.653742] gfs2: fsid=_: can't read superblock: -22 03:48:18 executing program 4: syz_mount_image$gfs2(&(0x7f0000000140)='gfs2\x00', &(0x7f0000000200)='./file0\x00', 0x125d9, 0x0, 0x0, 0x0, &(0x7f00000003c0)={[{@locktable={'locktable', 0x3d, '/'}}, {@lockproto_nolock='lockproto=lock_nolock'}]}) socketpair$unix(0x1, 0x1, 0x0, &(0x7f0000000180)) 03:48:18 executing program 5: r0 = socket$inet6(0xa, 0x2, 0x0) connect$inet6(r0, &(0x7f0000000180)={0xa, 0x500000000000000, 0x0, @local, 0x4}, 0x1c) 03:48:18 executing program 1: r0 = openat$kvm(0xffffffffffffff9c, &(0x7f0000000140)='/dev/kvm\x00', 0x0, 0x0) r1 = ioctl$KVM_CREATE_VM(r0, 0xae01, 0x0) r2 = ioctl$KVM_CREATE_VCPU(r1, 0xae41, 0x0) ioctl$KVM_SET_USER_MEMORY_REGION(r1, 0x4020ae46, &(0x7f0000000400)={0x0, 0x3, 0x0, 0x2000, &(0x7f0000000000/0x2000)=nil}) r3 = getpgrp(0xffffffffffffffff) r4 = fcntl$getown(r0, 0x9) rt_tgsigqueueinfo(r3, r4, 0x2a, &(0x7f0000000000)={0x34, 0xfffffffffffffff9, 0x1f}) syz_kvm_setup_cpu$x86(r1, 0xffffffffffffffff, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x0, 0x0, 0xfffffffffffffe78) sendmmsg$unix(0xffffffffffffffff, &(0x7f0000002780)=[{0x0, 0x0, &(0x7f0000001d00)=[{&(0x7f0000000bc0)="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", 0x3c5}], 0x1}], 0x1, 0x0) ioctl$KVM_REGISTER_COALESCED_MMIO(r1, 0x4010ae67, &(0x7f00000000c0)={0x0, 0x15200}) syz_kvm_setup_cpu$x86(0xffffffffffffffff, r2, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x8, 0x0, 0x0) ioctl$KVM_RUN(r2, 0xae80, 0x0) 03:48:18 executing program 0: r0 = syz_open_dev$swradio(&(0x7f0000000140)='/dev/swradio#\x00', 0x0, 0x2) ioctl$KDSETKEYCODE(r0, 0x4b4d, &(0x7f0000000180)={0xfffffffffffffffd, 0x6}) ioctl$sock_bt_cmtp_CMTPCONNDEL(r0, 0x400443c9, &(0x7f0000000380)={{0xfffffffffffff3f3, 0x200, 0x9, 0x4, 0x3, 0x9f}, 0x69}) socketpair$unix(0x1, 0x1, 0x0, &(0x7f0000000440)={0xffffffffffffffff, 0xffffffffffffffff}) ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200) r2 = openat$kvm(0xffffffffffffff9c, &(0x7f00000000c0)='/dev/kvm\x00', 0x0, 0x0) openat$dlm_monitor(0xffffffffffffff9c, &(0x7f0000000340)='/dev/dlm-monitor\x00', 0x0, 0x0) r3 = ioctl$KVM_CREATE_VM(r2, 0xae01, 0x0) r4 = ioctl$KVM_CREATE_VCPU(r3, 0xae41, 0x0) syz_kvm_setup_cpu$x86(r3, r4, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x0, 0x0, 0x0) pread64(r2, &(0x7f0000000200)=""/152, 0x98, 0x0) syz_kvm_setup_cpu$x86(0xffffffffffffffff, r4, &(0x7f0000000000/0x18000)=nil, &(0x7f00000001c0)=[@text64={0x40, &(0x7f0000000040)="b9800000c00f3235001000000f30f24c0f2c49e8426dc4027d3493b80800003626660f7e676d660f1678b06cc403f9dfbeb70000000bc7442400f5000000c744240284d178bcff1c24f2f347dbe1", 0x4e}], 0x1, 0x48, 0x0, 0x0) openat$cachefiles(0xffffffffffffff9c, &(0x7f0000000100)='/dev/cachefiles\x00', 0x0, 0x0) pipe2(&(0x7f0000000000)={0xffffffffffffffff}, 0x0) ioctl$KVM_RUN(r4, 0xae80, 0x0) setsockopt$inet6_tcp_TCP_ULP(r5, 0x6, 0x1f, &(0x7f0000000300)='tls\x00', 0x4) openat$cachefiles(0xffffffffffffff9c, &(0x7f00000002c0)='/dev/cachefiles\x00', 0x8000, 0x0) 03:48:18 executing program 5: r0 = socket$inet6(0xa, 0x2, 0x0) connect$inet6(r0, &(0x7f0000000180)={0xa, 0x9, 0x0, @local, 0x4}, 0x1c) [ 1158.904632] gfs2: fsid=_: Trying to join cluster "lock_nolock", "_" [ 1158.955258] gfs2: fsid=_: Now mounting FS... [ 1158.985636] gfs2: not a GFS2 filesystem [ 1159.016847] gfs2: fsid=_: can't read superblock 03:48:18 executing program 5: r0 = socket$inet6(0xa, 0x2, 0x0) connect$inet6(r0, &(0x7f0000000180)={0xa, 0x8, 0x0, @local, 0x4}, 0x1c) [ 1159.053274] gfs2: fsid=_: can't read superblock: -22 03:48:18 executing program 1: r0 = openat$kvm(0xffffffffffffff9c, &(0x7f0000000140)='/dev/kvm\x00', 0x0, 0x0) r1 = ioctl$KVM_CREATE_VM(r0, 0xae01, 0x0) r2 = ioctl$KVM_CREATE_VCPU(r1, 0xae41, 0xfffffffffffffffa) ioctl$KVM_SET_USER_MEMORY_REGION(r1, 0x4020ae46, &(0x7f0000000400)={0x0, 0x3, 0x0, 0x2000, &(0x7f0000000000/0x2000)=nil}) syz_kvm_setup_cpu$x86(r1, 0xffffffffffffffff, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x0, 0x0, 0xfffffffffffffe78) sendmmsg$unix(0xffffffffffffffff, &(0x7f0000002780)=[{0x0, 0x0, &(0x7f0000001d00)=[{&(0x7f0000000bc0)="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", 0x3c5}], 0x1}], 0x1, 0x0) ioctl$KVM_REGISTER_COALESCED_MMIO(r1, 0x4010ae67, &(0x7f00000000c0)={0x0, 0x15200}) syz_kvm_setup_cpu$x86(0xffffffffffffffff, r2, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x8, 0x0, 0x0) ioctl$KVM_RUN(r2, 0xae80, 0x0) 03:48:18 executing program 3: syz_mount_image$gfs2(&(0x7f0000000140)='gfs2\x00', &(0x7f0000000200)='./file0\x00', 0x126c9, 0x0, 0x0, 0x0, &(0x7f00000003c0)={[{@locktable={'locktable', 0x3d, '/'}}, {@lockproto_nolock='lockproto=lock_nolock'}]}) 03:48:19 executing program 2: r0 = socket$inet(0x2, 0x4000000000000001, 0x0) setsockopt$inet_tcp_int(r0, 0x6, 0x80000000000002, &(0x7f0000000040)=0x74, 0x4) bind$inet(r0, &(0x7f0000000180)={0x2, 0x4e23, @multicast1}, 0x10) sendto$inet(r0, 0x0, 0x0, 0x200007fd, &(0x7f0000e68000)={0x2, 0x4e23, @local}, 0x10) write$binfmt_elf64(r0, &(0x7f00000012c0)=ANY=[@ANYBLOB="7f454c4601000500000000000000000000000300000000008b0300000000000040000000000000001901000000000000cf0000000100380002000100c70a010151e57474090e00000300000000000000ff0f00000000000000000080000000000600000000000000db0a000000000000d616000000000000b27e2b7d90630ff79f047e22afbe739a615db84a0058ce3572d99ea10910ec6bf6ba57404bb35b88227009c25cfc6802a2b9a17a285b27f3e6a66f3f7d712cc9d3daf7e5b378f1f1aea47383c1b2213503c6bf3f6e73ca712d88eb1852562e8796913d6a3236e2532dcdade6597d5c20651c4520ce1ade1bd110422aba4e4364e2cf9589e661ad0ff96218d75fe22a793040b35188c96f2ca9fe626500000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000f52687e000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000901a50be12753000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"], 0x209) mmap(&(0x7f0000000000/0xb36000)=nil, 0xb36000, 0x3, 0x8031, 0xffffffffffffffff, 0x0) sendmmsg$inet_sctp(r0, &(0x7f0000002600)=[{0x0, 0xffffff7f, &(0x7f0000000240)=[{&(0x7f0000000380)="d4", 0x1}], 0x1}], 0x1, 0x0) 03:48:19 executing program 5: r0 = socket$inet6(0xa, 0x2, 0x0) connect$inet6(r0, &(0x7f0000000180)={0xa, 0x800000000000000, 0x0, @local, 0x4}, 0x1c) 03:48:19 executing program 0: socketpair$unix(0x1, 0x1, 0x0, &(0x7f0000000440)={0xffffffffffffffff, 0xffffffffffffffff}) ioctl$PERF_EVENT_IOC_ENABLE(r0, 0x8912, 0x400200) r1 = openat$kvm(0xffffffffffffff9c, &(0x7f00000000c0)='/dev/kvm\x00', 0x0, 0x0) openat$dlm_monitor(0xffffffffffffff9c, &(0x7f0000000340)='/dev/dlm-monitor\x00', 0x0, 0x0) r2 = ioctl$KVM_CREATE_VM(r1, 0xae01, 0x0) r3 = ioctl$KVM_CREATE_VCPU(r2, 0xae41, 0x0) syz_kvm_setup_cpu$x86(r2, 0xffffffffffffffff, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x4, 0x0, 0x0) syz_kvm_setup_cpu$x86(0xffffffffffffffff, r3, &(0x7f0000000000/0x18000)=nil, &(0x7f00000001c0)=[@text64={0x40, &(0x7f0000000040)="b9800000c00f3235001000000f30f24c0f2c49e8426dc4027d3493b80800003626660f7e676d660f1678b06cc403f9dfbeb70000000bc7442400f5000000c744240284d178bcff1c24f2f347dbe1", 0x4e}], 0x1, 0x48, 0x0, 0x0) pipe2(&(0x7f0000000000)={0xffffffffffffffff}, 0x0) ioctl$KVM_RUN(r3, 0xae80, 0x0) bpf$BPF_PROG_DETACH(0x9, &(0x7f0000000100)={0x0, r4, 0xb, 0x1}, 0x14) 03:48:19 executing program 1: r0 = openat$kvm(0xffffffffffffff9c, &(0x7f0000000140)='/dev/kvm\x00', 0x0, 0x0) r1 = ioctl$KVM_CREATE_VM(r0, 0xae01, 0x0) r2 = ioctl$KVM_CREATE_VCPU(r1, 0xae41, 0x0) ioctl$KVM_SET_USER_MEMORY_REGION(r1, 0x4020ae46, &(0x7f0000000400)={0x0, 0x3, 0x0, 0x2000, &(0x7f0000000000/0x2000)=nil}) syz_kvm_setup_cpu$x86(r1, 0xffffffffffffffff, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x0, 0x0, 0xfffffffffffffe78) sendmmsg$unix(0xffffffffffffffff, &(0x7f0000002780)=[{0x0, 0x0, &(0x7f0000001d00)=[{&(0x7f0000000bc0)="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", 0x3c5}], 0x1}], 0x1, 0x0) ioctl$KVM_REGISTER_COALESCED_MMIO(r1, 0x4010ae67, &(0x7f00000000c0)={0x0, 0x15200}) r3 = openat$snapshot(0xffffffffffffff9c, &(0x7f0000000000)='/dev/snapshot\x00', 0x0, 0x0) r4 = syz_genetlink_get_family_id$ipvs(&(0x7f0000000080)='IPVS\x00') sendmsg$IPVS_CMD_DEL_DAEMON(r3, &(0x7f0000000200)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x10020}, 0xc, &(0x7f0000000100)={&(0x7f0000000180)={0x50, r4, 0x0, 0x70bd27, 0x25dfdbfc, {}, [@IPVS_CMD_ATTR_TIMEOUT_UDP={0x8, 0x6, 0xdde}, @IPVS_CMD_ATTR_TIMEOUT_UDP={0x8, 0x6, 0x4}, @IPVS_CMD_ATTR_TIMEOUT_TCP_FIN={0x8, 0x5, 0x9}, @IPVS_CMD_ATTR_DAEMON={0xc, 0x3, [@IPVS_DAEMON_ATTR_MCAST_PORT={0x8, 0x7, 0x4e23}]}, @IPVS_CMD_ATTR_TIMEOUT_UDP={0x8, 0x6, 0x100000000}, @IPVS_CMD_ATTR_TIMEOUT_TCP_FIN={0x8, 0x5, 0x8}, @IPVS_CMD_ATTR_TIMEOUT_TCP_FIN={0x8, 0x5, 0xff}]}, 0x50}, 0x1, 0x0, 0x0, 0x20000080}, 0xc0) syz_kvm_setup_cpu$x86(0xffffffffffffffff, r2, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x8, 0x0, 0x0) ioctl$KVM_RUN(r2, 0xae80, 0x0) [ 1159.365717] gfs2: fsid=_: Trying to join cluster "lock_nolock", "_" [ 1159.377502] gfs2: fsid=_: Now mounting FS... [ 1159.400256] gfs2: not a GFS2 filesystem [ 1159.413659] gfs2: fsid=_: can't read superblock [ 1159.432551] gfs2: fsid=_: can't read superblock: -22 [ 1159.482572] sysfs: cannot create duplicate filename '/fs/gfs2/_' [ 1159.511915] CPU: 0 PID: 23482 Comm: syz-executor4 Not tainted 4.20.0-next-20190103 #4 [ 1159.519891] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 1159.529239] Call Trace: [ 1159.529264] dump_stack+0x1db/0x2d0 [ 1159.529289] ? dump_stack_print_info.cold+0x20/0x20 [ 1159.540531] ? _raw_spin_unlock_irqrestore+0xa4/0xe0 [ 1159.540556] sysfs_warn_dup.cold+0x1c/0x31 [ 1159.540574] sysfs_create_dir_ns+0x2ce/0x330 [ 1159.549911] ? sysfs_create_mount_point+0xa0/0xa0 [ 1159.559153] ? do_raw_spin_trylock+0x270/0x270 [ 1159.563757] kobject_add_internal.cold+0x129/0x6d8 [ 1159.568705] ? kobj_ns_type_registered+0x60/0x60 [ 1159.573463] ? kfree_const+0x59/0x70 [ 1159.577204] ? rcu_read_lock_sched_held+0x110/0x130 [ 1159.582232] ? kfree+0x1fa/0x230 [ 1159.585601] ? kfree_const+0x5e/0x70 [ 1159.585623] kobject_init_and_add+0x101/0x160 [ 1159.585640] ? kobject_add_internal+0x4b0/0x4b0 [ 1159.585659] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 1159.593845] ? vsnprintf+0x368/0x1b10 [ 1159.593873] gfs2_sys_fs_add+0x210/0x500 [ 1159.593889] ? recover_store+0x1a0/0x1a0 [ 1159.593907] ? snprintf+0xbb/0xf0 [ 1159.593922] ? vsprintf+0x30/0x40 [ 1159.607905] ? set_blocksize+0x2bf/0x340 [ 1159.607925] ? memcpy+0x46/0x50 [ 1159.607946] fill_super+0x894/0x1990 [ 1159.619551] ? gfs2_online_uevent+0x2d0/0x2d0 [ 1159.619613] ? snprintf+0xbb/0xf0 [ 1159.619628] ? vsprintf+0x40/0x40 [ 1159.634145] ? ns_capable_common+0x141/0x170 [ 1159.634160] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 1159.634174] ? set_blocksize+0x2bf/0x340 [ 1159.642153] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 1159.642183] gfs2_mount+0x5db/0x6ee [ 1159.642200] ? fill_super+0x1990/0x1990 [ 1159.642238] ? vfs_parse_fs_string+0x1c5/0x2b0 [ 1159.655127] ? vfs_parse_fs_param+0x4b0/0x4b0 [ 1159.681333] ? fill_super+0x1990/0x1990 [ 1159.685317] legacy_get_tree+0xf2/0x200 [ 1159.689294] vfs_get_tree+0x123/0x450 [ 1159.693096] do_mount+0x1622/0x2fa0 [ 1159.696720] ? calibrate_delay.cold+0x47b/0x539 [ 1159.701403] ? copy_mount_string+0x40/0x40 [ 1159.705652] ? retint_kernel+0x2d/0x2d [ 1159.709542] ? copy_mount_options+0x255/0x440 [ 1159.714042] ? copy_mount_options+0x255/0x440 [ 1159.718537] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 1159.724078] ? copy_mount_options+0x30e/0x440 [ 1159.728576] ksys_mount+0xdb/0x150 [ 1159.732111] __x64_sys_mount+0xbe/0x150 [ 1159.736092] do_syscall_64+0x1a3/0x800 [ 1159.739984] ? syscall_return_slowpath+0x5f0/0x5f0 [ 1159.744905] ? prepare_exit_to_usermode+0x232/0x3b0 [ 1159.749914] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 1159.754774] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 1159.759954] RIP: 0033:0x45a93a [ 1159.763136] Code: b8 a6 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 ed 8c fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 0f 83 ca 8c fb ff c3 66 0f 1f 84 00 00 00 00 00 [ 1159.782024] RSP: 002b:00007ff699fe9a88 EFLAGS: 00000206 ORIG_RAX: 00000000000000a5 [ 1159.789718] RAX: ffffffffffffffda RBX: 00007ff699fe9b30 RCX: 000000000045a93a [ 1159.796996] RDX: 00007ff699fe9ad0 RSI: 0000000020000200 RDI: 00007ff699fe9af0 [ 1159.804253] RBP: 0000000020000200 R08: 00007ff699fe9b30 R09: 00007ff699fe9ad0 [ 1159.811507] R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000003 [ 1159.818776] R13: 0000000000000000 R14: 00000000004db380 R15: 00000000ffffffff [ 1159.839934] kobject_add_internal failed for _ with -EEXIST, don't try to register things with the same name in the same directory. [ 1159.855114] gfs2: fsid=_: error -17 adding sysfs files [ 1159.897799] gfs2: fsid=_: Trying to join cluster "lock_nolock", "_" [ 1159.928805] gfs2: fsid=_: Now mounting FS... [ 1159.943260] gfs2: not a GFS2 filesystem [ 1159.947360] gfs2: fsid=_: can't read superblock [ 1159.952133] gfs2: fsid=_: can't read superblock: -22 03:48:19 executing program 4: syz_mount_image$gfs2(&(0x7f0000000140)='gfs2\x00', &(0x7f0000000200)='./file0\x00', 0x19, 0x0, 0x0, 0x0, &(0x7f00000003c0)={[{@locktable={'locktable', 0x3d, '/'}}, {@lockproto_nolock='lockproto=lock_nolock'}]}) socketpair$unix(0x1, 0x1, 0x0, &(0x7f0000000180)) 03:48:19 executing program 5: r0 = socket$inet6(0xa, 0x2, 0x0) connect$inet6(r0, &(0x7f0000000180)={0xa, 0x80fe, 0x0, @local, 0x4}, 0x1c) 03:48:19 executing program 1: r0 = openat$kvm(0xffffffffffffff9c, &(0x7f0000000140)='/dev/kvm\x00', 0x8000, 0x0) r1 = ioctl$KVM_CREATE_VM(r0, 0xae01, 0x0) r2 = ioctl$KVM_CREATE_VCPU(r1, 0xae41, 0x0) ioctl$KVM_SET_USER_MEMORY_REGION(r1, 0x4020ae46, &(0x7f0000000400)={0x0, 0x3, 0x0, 0x2000, &(0x7f0000000000/0x2000)=nil}) syz_kvm_setup_cpu$x86(r1, 0xffffffffffffffff, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x0, 0x0, 0xfffffffffffffe78) sendmmsg$unix(0xffffffffffffffff, &(0x7f0000002780)=[{0x0, 0x0, &(0x7f0000001d00)=[{&(0x7f0000000bc0)="b474ac0450ac6a2ff5ba4c1a19990e818d6fb646a5739e09c636550fdd39d0316e215a5a9427ac426da0b375844fb7f5ee5130d0b57cdab9af6f5f0d39c1787ec9ecde6263664c6a9859b7a0c4cbc99a05184da950f370cf65a18bff7975c0c12ca4227baa2164d031a5472d7f581c6f7eedd103d8fc89b6b4b52e5d3da0817eec8c57f722e356068b99a056ab6a693b9eebe38d75170491e07f9f69573b02b1a048f29e39cd24fed99e8606ffcbe4f617f48370ec62bd327cdfb9da8e8fef232b2e8f8f6868bb1781eab4c294befd65d9a336123bd34be8f256b5fc0420aa6e930f292a9a06365daaebd0bcaaaf5e0c12167aad0c62a48666383ee58b37df8077c5d2d5298d5247e240a78ff2543147129775f6d4a872df80d9da66c2a0a169df65141cbe88b1e280d60f6e11b25a0b5bb1bdd430378761d547f3ff7e42cc84c849e66004e30905d908e352a53f95bca84a68a6ce5ee82b69c939a196a7060bee28d8dee1ed52ae04b228bedf9302df44cc957780e42c2784d18e3695ee5e73dbe385331494af3cbcf8952e85469e9566c32692c0ceae8dab7b9553b5e8aa66edbad2ed828ba2a665a48a2822d9dc538863aea705c926c5a12fee84db545a36a13281e09e82c06211cc195cb4409bedfb7cf22f6c01fba9720bc4f447da73bb95bab6c056ce51bbc9d5b6622c54152e853f9639d2db2a5992e0f0e8f77a2e5efcfd139869cbdc902622399035d6ab8c22e33605be6850356be97ac05588720e1e215fbf5cb6633f0894e0a4dbd28708cac77792a31b00f47d18cebcb9114f1b0ffd66b587c5f9ba086fc530c6a0ac561068de208f18a3b6adc47f04bd63bd4a31544eb953398ddee5b5e4533aa529947aa46e7e517ff719e559c106f8afc570019f272a9f2d2699c7384612854de44dc40bb33aafee4e5fab1c06ceeffec56782452589f80c3946e6631c591e7f82af7e3a6422e0f35b0847f0a3049ee29b09f8aadf59c96a99576be85d6ddcf8c4d82373355add27397517402a56fd36bf877a53731413c30786431262705fb01511a778482cd85b60323b683e0e9d2f06b57678ddcf06f6da03f818e7f0b4db7045527f6e00fa26fe586fe0fcc72024fad6bab1739f6d7980d21f1fac0e7f53ee4cb254349b93a89f5695be91e5c586411b18f3f11298d979abdf4dd4796b181e623189aa73182c4c5ff346545168a520241ce23e08ade26085f654537258efaacfe1a64b2261c5180eb7c01ca6f4dc0f08f98ec12c06036278eff4c8d3b852bb2022be745861268ffbe0bb37c45452d2ac97aa6cb81db9f428688e6eab0e85ba6eb2eaecf4e8e137a2101f04b201258a71d857194610", 0x3c5}], 0x1}], 0x1, 0x0) finit_module(r0, &(0x7f0000000180)='em1\x11eth1ppp0\x00', 0x3) ioctl$KVM_REGISTER_COALESCED_MMIO(r1, 0x4010ae67, &(0x7f00000000c0)={0x0, 0x15200}) r3 = syz_open_dev$dmmidi(&(0x7f0000000000)='/dev/dmmidi#\x00', 0x401, 0x100) accept4$unix(r3, &(0x7f0000000040)=@abs, &(0x7f0000000100)=0x6e, 0x800) syz_kvm_setup_cpu$x86(0xffffffffffffffff, r2, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x8, 0x0, 0x0) ioctl$DRM_IOCTL_SET_MASTER(r3, 0x641e) ioctl$KVM_RUN(r2, 0xae80, 0x0) 03:48:19 executing program 0: socketpair$unix(0x1, 0x1, 0x0, &(0x7f0000000440)={0xffffffffffffffff, 0xffffffffffffffff}) ioctl$PERF_EVENT_IOC_ENABLE(r0, 0x8912, 0x400200) r1 = openat$kvm(0xffffffffffffff9c, &(0x7f0000000140)='/dev/kvm\x00', 0x0, 0x0) r2 = openat$dlm_monitor(0xffffffffffffff9c, &(0x7f0000000340)='/dev/dlm-monitor\x00', 0x0, 0x0) r3 = fcntl$getown(r2, 0x9) getresuid(&(0x7f0000000100), &(0x7f0000000180), &(0x7f0000000200)=0x0) r5 = getuid() ioctl$TIOCGSID(r2, 0x5429, &(0x7f0000000240)=0x0) getsockopt$inet_IP_XFRM_POLICY(r0, 0x0, 0x11, &(0x7f0000000480)={{{@in6, @in=@dev, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0}}, {{@in=@empty}, 0x0, @in=@loopback}}, &(0x7f0000000280)=0xe8) sendmsg$nl_generic(r2, &(0x7f0000000300)={&(0x7f00000000c0)={0x10, 0x0, 0x0, 0x2000}, 0xc, &(0x7f00000002c0)={&(0x7f0000000580)={0x291c, 0x3c, 0x300, 0x70bd2d, 0x25dfdbff, {0x18}, [@typed={0x8, 0x88, @fd=r1}, @generic="6997058da9d6ef8fa4aa80fdca4ff89b93e4301964dc2f5218a21c3fa888a89fd90e3e539f5de14f27af19fe84c339f3ff4d66ee1fdfb4c6d873814801932f7f5be3b05eb0238a0d95a0d76a92324bd9bbbb", @nested={0x131c, 0x46, [@generic="576e555788b1f086392659d7abbbc3703df4bfda091b426c260fe5d217b1f7a8a030bf591908cc6e50fd4e29d41b4f15f585602dd6c73ba9d688a63f2269209fb7e7feb38fa07993a86d5cbddcac00b194479ee8acf11df33790eb0a57d3ee1e473a2549bd8012d55e44fbfcda64a5f3bb5e74a22c009e71f13e1368c11f693954cd8d6035d5db1eb3cd00d96c4a766b1c7d061df8c7f793d9c0e1aea5f6c73a4748eb90134c1e56e582de1ca57e1aa5824cc39bf4d6bd5ec8330e180f87df1dccb5a61c3066d83da966b4e501141b3fd33bbf1f49553472e73ac5c0e9bb6514992044c0aae17199d95998ac6fd0acda7427f17c0e", @generic="07cd7c6c230a9a932ee9a90d5e0ecff75e19c63bea2d5c8460ae812aeac119b301f86191f7071636dd3ec83162bfb3e516a4101b560aabd5a4e9e32ada5466659b11d1b2d636076e89e08cafb1bf6b1c67f790e22adea66250cdca1582f4a24d2e863e5535d2e174fcab260b3eecd78b3b56897c8c635ffad9dd5f62dac7ce5357ab5957636417a1a1ff65b1fdf2350c2dd4a0db935e", @typed={0x14, 0x1b, @ipv6=@dev={0xfe, 0x80, [], 0x1b}}, @generic="93045d220f534690bbf8c8106583c1df0c2e65512403ab121bedbbea081a626ec7f7f65226a9127cd15b409370cc298d83b2a6e9cb8e15fb2f45c675282eee1df2193eddea4b256f5aaf04cc03e3621f22d381cb94aaad1ac5772216717ab59b52fe74854187cb46bb1ba62d775e030dea8e61e79a7a586fc493cc35939e022088cb1041621af6e65531fb1684442ce71117858c5898ed11ae858a07b85547944e6461fc06727b64e52210c22ad255dc7e3974a1a2beb5c5aaded4fed0a52453c7737adb73875eea10f8421e68bb852f278058fe9b2028a12d830b002a9936796ba7361e50a5d52d73b37a0c26012c3b7838", @generic="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@generic="3e917abd2e0ad48e81f9961e2d4c8cf9871d99", @generic="18ca80ec691b39a6fd33095dbe7b241ed7b87e732051fcc45222a38ec366ab6a753c2110d30f37b84fb14278f4de8f0b12b921db2f6827004e45b4efe50537a097a04793c8c30fd0b1baf12cc84e0d463a2812a8330442a7837dcde822c10b8d84de8678baacde4bbce861aee5e3b4645481a148"]}, @typed={0x8, 0x48, @pid=r3}, @nested={0x4, 0x47}, @nested={0x114c, 0x84, [@typed={0x8, 0x6b, @fd=r2}, 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@generic="d378cde0290da5e8f508b074d9fff0c0ea2d86d5c12abd351b0ebfd1bca970de7cd27cf48821510df025b6ad31868ff534bdbc2b7caa9085b714ffbf07d1a413e13c538ca1bde2241ff3380b91765ef33ccfb3c14d0f813c28145ad32a983bd75a07686b0ff4aeba62cfb146b2f27a53c0811976df5237f1dc28318bb456d8eedfdfa1256bd45e1a8ceeb4d92bf1a8db96b1906d51811ea0657545e9b4aa88fd5e82bd21d8b3", @typed={0x8, 0x1a, @ipv4=@broadcast}, @typed={0x8, 0xf, @fd=r1}, @typed={0x88, 0x6, @binary="f39fb53b51cf13dac1520da79f141c0088cb64920f20a874cf9397124d2d131422fdd237c9695bc5e2c7f5f2f8c904700c3e95114e90de7d01693af0ed3bccc51cbad473ff54f80c701659382dcd0a1af91230585ac40af0407cbb5bdfdf78a6bd13bcc1f9014a6268017f18e85cab23b229715a3a14209474d485dcdef1a6848ee4"}]}, @nested={0x2a0, 0x59, [@typed={0xc4, 0x6b, @binary="9660671e996174ac3928e3393e8b17fa10fd23cbb9ca7e472bf47c7e005432508e856f95535d2c575da7005cb4a13586fae959edfa901a8d7455660e311c7707cb02adb4a766691d8b8e56f4181aa5d63e2c40f5f03a86708c04d252855271473882c80e0cf1c34085807fced6032969ebcf861eccf07e617ab84893a122f1863cf59ed0ff3e5e22074b87593a166fe60dc77d914504f22d48d3a117882d33022e5f94dbc459fecbc38f306ee7718f93899bdaf644333588ffb454c0dd5e"}, @generic="e4304fbb779c10071ec98e2323b67e9b74c2167540f0edd83dae07e1f4a29d3fbd65256c492ab3665a4b58c84870d5d08bfc10a4ccf6299dc7621c6fabd948730984fa7d0f6b94bf7eb61ccb2041e8a8c3e73ddfc41fa9c848e7b5f5e8fbf677e37a1854da1b8c3750ab29af87e428844b419b12feeeb20e71a6c06385464867363de58eb8733fad688e729fa87a6b449ab66f01b6e8a5459fe82a1fb1557c314595ac05e4e941d25cb6190478ccc507b99c3fed5e28b51caeb20b82", @generic="48ca70ab89a14e98ed696c22be92cacc1cee850c22815dff", @typed={0x8, 0x1a, @str='\x00'}, @typed={0x8, 0x5, @uid=r4}, @typed={0x8, 0x65, @ipv4=@initdev={0xac, 0x1e, 0x0, 0x0}}, @typed={0x8, 0x1a, @uid=r5}, @generic="ea3797f24916aec2f0298a63eec010061763a7d66a9231b52f2adc56684877a8db374549d910c07937dc6ae9b0fd", @generic="157b1bf0a1ab37510597087ec517d97b27bc60bea304a3c7b5858133668941e9ff5751fd758fccd6c3778d44fe928abf4944fbb8ad61293241978cd20b6cbac4a80524d7ff82893fab3a82e846555aafc3c86610cbabb84fd1766321cd29d827b536ac667a55104e76842c15354edab66d37c85b4a774ff09d1ab5865c1d0b66acb8b2d602a1b76b3ca42ec3ee54779e3e369a96cfc9a32d738b9ee88dde71a98ab3bbdd99858474d9f1691cce1c88e29f69574e6861"]}, @generic="528cfad7c6b2680a91fb86c6d4c6aa450b28a18c87cea746c53e5d71da348483cbde07b3fbf36800a67e0010944007f41cb8abc162288f4597", @typed={0x14, 0x2, @ipv6=@remote}, @nested={0x14c, 0x18, [@generic="be6a12f2e96452d1a4153ea9d8d4d1fbf3c8a2a80f9d8ea5fc9fdd3bfc32661b1908a6725a70149123dda2f490badbb43820ed2bf39e49eb5308b91acb44a971ceff37c02a9a6e882970814d98e1837d064e17ce4167fd7225cf05b00fd4b3e99713f01f2b6ab5dece10b12c234af56d652992106465e1778a3d515f4da68b1261ee8bccc4f802de6eecf3011a0c3f874624b0e3db2b7dc71746b9a1de308538a5e35c31e4887608915be030ec232e328a59c3323c7884", @typed={0x8, 0x47, @pid=r6}, @generic="504c94a4160af9a98d3a11925a4bf7e75705e1ca6584456c014da013c38f9533aa0184e501e11eae209f5c7c43a0056e9bc5fc7feefe8a804d21e8bd267a5240448591e631246a76a55c36b9e53c581668afc8091da9cb78dd93922751abf45645a36b94336b772cf4cbb30c87c16f0ade157656746b4725229951932a8cbd", @typed={0x8, 0x6b, @uid=r7}]}]}, 0x291c}, 0x1, 0x0, 0x0, 0x8000}, 0x91) r8 = ioctl$KVM_CREATE_VM(r1, 0xae01, 0x0) r9 = ioctl$KVM_CREATE_VCPU(r8, 0xae41, 0x0) syz_kvm_setup_cpu$x86(r8, 0xffffffffffffffff, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x0, 0x0, 0x0) syz_kvm_setup_cpu$x86(0xffffffffffffffff, r9, &(0x7f0000000000/0x18000)=nil, &(0x7f00000001c0)=[@text64={0x40, &(0x7f0000000040)="b9800000c00f3235001000000f30f24c0f2c49e8426dc4027d3493b80800003626660f7e676d660f1678b06cc403f9dfbeb70000000bc7442400f5000000c744240284d178bcff1c24f2f347dbe1", 0x4e}], 0x1, 0x48, 0x0, 0x0) pipe2(&(0x7f0000000000)={0xffffffffffffffff, 0xffffffffffffffff}, 0x0) ioctl$SNDRV_TIMER_IOCTL_CONTINUE(r10, 0x54a2) ioctl$KVM_RUN(r9, 0xae80, 0x0) [ 1160.106828] sysfs: cannot create duplicate filename '/fs/gfs2/_' [ 1160.132864] CPU: 0 PID: 23544 Comm: syz-executor4 Not tainted 4.20.0-next-20190103 #4 [ 1160.140842] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 1160.150210] Call Trace: [ 1160.152814] dump_stack+0x1db/0x2d0 [ 1160.156464] ? dump_stack_print_info.cold+0x20/0x20 [ 1160.161496] ? _raw_spin_unlock_irqrestore+0xa4/0xe0 [ 1160.166638] sysfs_warn_dup.cold+0x1c/0x31 [ 1160.170883] sysfs_create_dir_ns+0x2ce/0x330 [ 1160.175307] ? sysfs_create_mount_point+0xa0/0xa0 [ 1160.180171] ? do_raw_spin_trylock+0x270/0x270 [ 1160.184774] kobject_add_internal.cold+0x129/0x6d8 [ 1160.189718] ? kobj_ns_type_registered+0x60/0x60 [ 1160.194476] ? kfree_const+0x59/0x70 [ 1160.198201] ? rcu_read_lock_sched_held+0x110/0x130 [ 1160.203231] ? kfree+0x1fa/0x230 [ 1160.206596] ? kfree_const+0x5e/0x70 [ 1160.210343] kobject_init_and_add+0x101/0x160 [ 1160.214842] ? kobject_add_internal+0x4b0/0x4b0 [ 1160.219519] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 1160.225072] ? vsnprintf+0x368/0x1b10 [ 1160.228889] gfs2_sys_fs_add+0x210/0x500 [ 1160.232969] ? recover_store+0x1a0/0x1a0 [ 1160.237044] ? snprintf+0xbb/0xf0 [ 1160.240533] ? vsprintf+0x30/0x40 [ 1160.244027] ? set_blocksize+0x2bf/0x340 [ 1160.248122] ? memcpy+0x46/0x50 [ 1160.251417] fill_super+0x894/0x1990 [ 1160.255167] ? gfs2_online_uevent+0x2d0/0x2d0 [ 1160.259706] ? snprintf+0xbb/0xf0 [ 1160.263211] ? vsprintf+0x40/0x40 [ 1160.266698] ? ns_capable_common+0x141/0x170 [ 1160.271127] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 1160.276177] ? set_blocksize+0x2bf/0x340 [ 1160.280264] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 1160.285833] gfs2_mount+0x5db/0x6ee [ 1160.289489] ? fill_super+0x1990/0x1990 [ 1160.293509] ? vfs_parse_fs_string+0x1c5/0x2b0 [ 1160.298123] ? vfs_parse_fs_param+0x4b0/0x4b0 [ 1160.302658] ? fill_super+0x1990/0x1990 [ 1160.306672] legacy_get_tree+0xf2/0x200 [ 1160.310681] vfs_get_tree+0x123/0x450 [ 1160.314505] do_mount+0x1622/0x2fa0 [ 1160.318200] ? copy_mount_string+0x40/0x40 [ 1160.322458] ? kmem_cache_alloc_trace+0x354/0x760 [ 1160.327334] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 1160.332914] ? _copy_from_user+0xdd/0x150 [ 1160.337125] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 1160.342724] ? copy_mount_options+0x30e/0x440 [ 1160.347241] ksys_mount+0xdb/0x150 [ 1160.350801] __x64_sys_mount+0xbe/0x150 [ 1160.354797] do_syscall_64+0x1a3/0x800 [ 1160.358707] ? syscall_return_slowpath+0x5f0/0x5f0 [ 1160.363649] ? prepare_exit_to_usermode+0x232/0x3b0 [ 1160.368685] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 1160.373553] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 1160.378752] RIP: 0033:0x45a93a [ 1160.381950] Code: b8 a6 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 ed 8c fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 0f 83 ca 8c fb ff c3 66 0f 1f 84 00 00 00 00 00 03:48:19 executing program 5: r0 = socket$inet6(0xa, 0x2, 0x0) connect$inet6(r0, &(0x7f0000000180)={0xa, 0x3f00, 0x0, @local, 0x4}, 0x1c) 03:48:19 executing program 5: r0 = socket$inet6(0xa, 0x2, 0x0) connect$inet6(r0, &(0x7f0000000180)={0xa, 0x10000000000000, 0x0, @local, 0x4}, 0x1c) 03:48:19 executing program 5: r0 = socket$inet6(0xa, 0x2, 0x0) connect$inet6(r0, &(0x7f0000000180)={0xa, 0x4000000000000000, 0x0, @local, 0x4}, 0x1c) [ 1160.400867] RSP: 002b:00007ff699fe9a88 EFLAGS: 00000206 ORIG_RAX: 00000000000000a5 [ 1160.408591] RAX: ffffffffffffffda RBX: 00007ff699fe9b30 RCX: 000000000045a93a [ 1160.408600] RDX: 00007ff699fe9ad0 RSI: 0000000020000200 RDI: 00007ff699fe9af0 [ 1160.408610] RBP: 0000000020000200 R08: 00007ff699fe9b30 R09: 00007ff699fe9ad0 [ 1160.408619] R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000003 [ 1160.408628] R13: 0000000000000000 R14: 00000000004db380 R15: 00000000ffffffff [ 1160.492745] kobject_add_internal failed for _ with -EEXIST, don't try to register things with the same name in the same directory. 03:48:20 executing program 3: syz_mount_image$gfs2(&(0x7f0000000140)='gfs2\x00', &(0x7f0000000200)='./file0\x00', 0xffffffffa0008000, 0x0, 0x0, 0x0, &(0x7f00000003c0)={[{@locktable={'locktable', 0x3d, '/'}}, {@lockproto_nolock='lockproto=lock_nolock'}]}) 03:48:20 executing program 5: r0 = socket$inet6(0xa, 0x2, 0x0) connect$inet6(r0, &(0x7f0000000180)={0xa, 0x700000000000000, 0x0, @local, 0x4}, 0x1c) 03:48:20 executing program 2: r0 = socket$inet(0x2, 0x4000000000000001, 0x0) setsockopt$inet_tcp_int(r0, 0x6, 0x80000000000002, &(0x7f0000000040)=0x74, 0x4) bind$inet(r0, &(0x7f0000000180)={0x2, 0x4e23, @multicast1}, 0x10) sendto$inet(r0, 0x0, 0x0, 0x200007fd, &(0x7f0000e68000)={0x2, 0x4e23, @local}, 0x10) write$binfmt_elf64(r0, &(0x7f00000012c0)=ANY=[@ANYBLOB="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"], 0x209) mmap(&(0x7f0000000000/0xb36000)=nil, 0xb36000, 0x3, 0x8031, 0xffffffffffffffff, 0x0) sendmmsg$inet_sctp(r0, &(0x7f0000002600)=[{0x0, 0x700, &(0x7f0000000240)=[{&(0x7f0000000380)="d4", 0x1}], 0x1}], 0x1, 0x0) 03:48:20 executing program 5: r0 = socket$inet6(0xa, 0x2, 0x0) connect$inet6(r0, &(0x7f0000000180)={0xa, 0x9000000, 0x0, @local, 0x4}, 0x1c) [ 1160.571015] gfs2: fsid=_: error -17 adding sysfs files 03:48:20 executing program 0: socketpair$unix(0x1, 0x1, 0x0, &(0x7f0000000440)={0xffffffffffffffff, 0xffffffffffffffff}) ioctl$PERF_EVENT_IOC_ENABLE(r0, 0x8912, 0x400200) r1 = openat$kvm(0xffffffffffffff9c, &(0x7f00000000c0)='/dev/kvm\x00', 0x0, 0x0) r2 = openat$dlm_monitor(0xffffffffffffff9c, &(0x7f0000000340)='/dev/dlm-monitor\x00', 0x0, 0x0) r3 = ioctl$KVM_CREATE_VM(r1, 0xae01, 0x0) r4 = ioctl$KVM_CREATE_VCPU(r3, 0xae41, 0x0) syz_kvm_setup_cpu$x86(r3, r2, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x0, 0x0, 0x0) syz_kvm_setup_cpu$x86(0xffffffffffffffff, r4, &(0x7f0000000000/0x18000)=nil, &(0x7f00000001c0)=[@text64={0x40, &(0x7f0000000040)="b9800000c00f3235001000000f30f24c0f2c49e8426dc4027d3493b80800003626660f7e676d660f1678b06cc403f9dfbeb70000000bc7442400f5000000c744240284d178bcff1c24f2f347dbe1", 0x4e}], 0x1, 0x48, 0x0, 0x0) openat$udambuf(0xffffffffffffff9c, &(0x7f0000000140)='/dev/udmabuf\x00', 0x2) ioctl$KVM_UNREGISTER_COALESCED_MMIO(r3, 0x4010ae68, &(0x7f0000000100)={0x3000, 0x2000}) pipe2(&(0x7f0000000000), 0x0) ioctl$KVM_RUN(r4, 0xae80, 0x0) [ 1160.729797] gfs2: fsid=_: Trying to join cluster "lock_nolock", "_" [ 1160.795161] gfs2: fsid=_: Now mounting FS... [ 1160.816757] gfs2: not a GFS2 filesystem [ 1160.834262] gfs2: fsid=_: can't read superblock [ 1160.872987] gfs2: fsid=_: can't read superblock: -22 03:48:20 executing program 4: syz_mount_image$gfs2(&(0x7f0000000140)='gfs2\x00', &(0x7f0000000200)='./file0\x00', 0xd, 0x0, 0x0, 0x0, &(0x7f00000003c0)={[{@locktable={'locktable', 0x3d, '/'}}, {@lockproto_nolock='lockproto=lock_nolock'}]}) socketpair$unix(0x1, 0x1, 0x0, &(0x7f0000000180)) 03:48:20 executing program 1: r0 = openat$kvm(0xffffffffffffff9c, &(0x7f0000000140)='/dev/kvm\x00', 0x0, 0x0) r1 = ioctl$KVM_CREATE_VM(r0, 0xae01, 0x0) r2 = ioctl$KVM_CREATE_VCPU(r1, 0xae41, 0x0) ioctl$KVM_SET_USER_MEMORY_REGION(r1, 0x4020ae46, &(0x7f0000000400)={0x0, 0x3, 0x0, 0x2000, &(0x7f0000000000/0x2000)=nil}) syz_kvm_setup_cpu$x86(r1, 0xffffffffffffffff, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x0, 0x0, 0xfffffffffffffe78) sendmmsg$unix(0xffffffffffffffff, &(0x7f0000002780)=[{0x0, 0x0, &(0x7f0000001d00)=[{&(0x7f0000000bc0)="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", 0x3c5}], 0x1}], 0x1, 0x0) ioctl$KVM_REGISTER_COALESCED_MMIO(r1, 0x4010ae67, &(0x7f00000000c0)={0x0, 0x15200}) syz_kvm_setup_cpu$x86(0xffffffffffffffff, r2, &(0x7f0000000000/0x18000)=nil, 0x0, 0xfffffffffffffdac, 0x8, 0x0, 0x0) ioctl$KVM_RUN(r2, 0xae80, 0x0) 03:48:20 executing program 5: r0 = socket$inet6(0xa, 0x2, 0x0) connect$inet6(r0, &(0x7f0000000180)={0xa, 0x3f000000, 0x0, @local, 0x4}, 0x1c) 03:48:20 executing program 0: socketpair$unix(0x1, 0x1, 0x0, &(0x7f0000000440)) r0 = openat$vga_arbiter(0xffffffffffffff9c, &(0x7f0000000180)='/dev/vga_arbiter\x00', 0x0, 0x0) setsockopt$inet_tcp_TCP_QUEUE_SEQ(r0, 0x6, 0x15, &(0x7f0000000200)=0x1, 0x4) r1 = openat$kvm(0xffffffffffffff9c, &(0x7f00000000c0)='/dev/kvm\x00', 0x0, 0x0) openat$dlm_monitor(0xffffffffffffff9c, &(0x7f0000000140)='/dev/dlm-monitor\x00', 0x40000, 0x0) openat$dsp(0xffffffffffffff9c, &(0x7f0000000100)='/dev/dsp\x00', 0x40000, 0x0) r2 = ioctl$KVM_CREATE_VM(r1, 0xae01, 0x0) r3 = ioctl$KVM_CREATE_VCPU(r2, 0xae41, 0x0) syz_kvm_setup_cpu$x86(r2, 0xffffffffffffffff, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x0, 0x0, 0x0) syz_kvm_setup_cpu$x86(0xffffffffffffffff, r3, &(0x7f0000000000/0x18000)=nil, &(0x7f00000001c0)=[@text64={0x40, &(0x7f0000000040)="b9800000c00f3235001000000f30f24c0f2c49e8426dc4027d3493b80800003626660f7e676d660f1678b06cc403f9dfbeb70000000bc7442400f5000000c744240284d178bcff1c24f2f347dbe1", 0x4e}], 0x1, 0x48, 0x0, 0x0) pipe2(&(0x7f0000000000), 0x0) ioctl$KVM_RUN(r3, 0xae80, 0x0) 03:48:20 executing program 5: r0 = socket$inet6(0xa, 0x2, 0x0) connect$inet6(r0, &(0x7f0000000180)={0xa, 0x7000000, 0x0, @local, 0x4}, 0x1c) [ 1161.167787] gfs2: fsid=_: Trying to join cluster "lock_nolock", "_" [ 1161.205166] sysfs: cannot create duplicate filename '/fs/gfs2/_' [ 1161.214837] gfs2: fsid=_: Now mounting FS... [ 1161.241191] gfs2: not a GFS2 filesystem [ 1161.247310] CPU: 1 PID: 23598 Comm: syz-executor4 Not tainted 4.20.0-next-20190103 #4 [ 1161.255289] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 1161.264638] Call Trace: [ 1161.264663] dump_stack+0x1db/0x2d0 [ 1161.264685] ? dump_stack_print_info.cold+0x20/0x20 [ 1161.264707] ? _raw_spin_unlock_irqrestore+0xa4/0xe0 [ 1161.264735] sysfs_warn_dup.cold+0x1c/0x31 [ 1161.264756] sysfs_create_dir_ns+0x2ce/0x330 [ 1161.272725] gfs2: fsid=_: can't read superblock [ 1161.275945] ? sysfs_create_mount_point+0xa0/0xa0 [ 1161.275961] ? do_raw_spin_trylock+0x270/0x270 [ 1161.275988] kobject_add_internal.cold+0x129/0x6d8 [ 1161.281069] gfs2: fsid=_: can't read superblock: -22 [ 1161.285314] ? kobj_ns_type_registered+0x60/0x60 [ 1161.285328] ? kfree_const+0x59/0x70 [ 1161.285343] ? rcu_read_lock_sched_held+0x110/0x130 [ 1161.285358] ? kfree+0x1fa/0x230 [ 1161.285375] ? kfree_const+0x5e/0x70 [ 1161.308762] kobject_init_and_add+0x101/0x160 [ 1161.334389] ? kobject_add_internal+0x4b0/0x4b0 [ 1161.334408] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 1161.334433] ? vsnprintf+0x368/0x1b10 [ 1161.334478] gfs2_sys_fs_add+0x210/0x500 [ 1161.349121] ? recover_store+0x1a0/0x1a0 [ 1161.349138] ? snprintf+0xbb/0xf0 [ 1161.349152] ? vsprintf+0x30/0x40 [ 1161.367897] ? set_blocksize+0x2bf/0x340 [ 1161.371992] ? memcpy+0x46/0x50 [ 1161.375292] fill_super+0x894/0x1990 [ 1161.379043] ? gfs2_online_uevent+0x2d0/0x2d0 [ 1161.383558] ? snprintf+0xbb/0xf0 [ 1161.387015] ? vsprintf+0x40/0x40 03:48:21 executing program 5: r0 = socket$inet6(0xa, 0x2, 0x0) connect$inet6(r0, &(0x7f0000000180)={0xa, 0xa, 0x0, @local, 0x4}, 0x1c) [ 1161.390478] ? ns_capable_common+0x141/0x170 [ 1161.394883] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 1161.394895] ? set_blocksize+0x2bf/0x340 [ 1161.394911] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 1161.394927] gfs2_mount+0x5db/0x6ee [ 1161.394942] ? fill_super+0x1990/0x1990 [ 1161.395010] ? vfs_parse_fs_string+0x1c5/0x2b0 [ 1161.395027] ? vfs_parse_fs_param+0x4b0/0x4b0 [ 1161.395042] ? fill_super+0x1990/0x1990 [ 1161.417229] legacy_get_tree+0xf2/0x200 [ 1161.417251] vfs_get_tree+0x123/0x450 [ 1161.417269] do_mount+0x1622/0x2fa0 03:48:21 executing program 2: r0 = socket$inet(0x2, 0x4000000000000001, 0x0) setsockopt$inet_tcp_int(r0, 0x6, 0x80000000000002, &(0x7f0000000040)=0x74, 0x4) bind$inet(r0, &(0x7f0000000180)={0x2, 0x4e23, @multicast1}, 0x10) sendto$inet(r0, 0x0, 0x0, 0x200007fd, &(0x7f0000e68000)={0x2, 0x4e23, @local}, 0x10) write$binfmt_elf64(r0, &(0x7f00000012c0)=ANY=[@ANYBLOB="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"], 0x209) mmap(&(0x7f0000000000/0xb36000)=nil, 0xb36000, 0x3, 0x8031, 0xffffffffffffffff, 0x0) sendmmsg$inet_sctp(r0, &(0x7f0000002600)=[{0x0, 0xffffffffa0008000, &(0x7f0000000240)=[{&(0x7f0000000380)="d4", 0x1}], 0x1}], 0x1, 0x0) [ 1161.434473] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 1161.434497] ? copy_mount_string+0x40/0x40 [ 1161.434519] ? copy_mount_options+0x255/0x440 [ 1161.434533] ? copy_mount_options+0x1de/0x440 [ 1161.434546] ? __sanitizer_cov_trace_pc+0x26/0x50 [ 1161.434561] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 1161.434576] ? copy_mount_options+0x30e/0x440 [ 1161.470266] ksys_mount+0xdb/0x150 [ 1161.470285] __x64_sys_mount+0xbe/0x150 [ 1161.470303] do_syscall_64+0x1a3/0x800 [ 1161.486182] ? syscall_return_slowpath+0x5f0/0x5f0 [ 1161.491113] ? prepare_exit_to_usermode+0x232/0x3b0 [ 1161.496140] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 1161.500991] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 1161.506213] RIP: 0033:0x45a93a [ 1161.509405] Code: b8 a6 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 ed 8c fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 0f 83 ca 8c fb ff c3 66 0f 1f 84 00 00 00 00 00 [ 1161.528766] RSP: 002b:00007ff699fe9a88 EFLAGS: 00000206 ORIG_RAX: 00000000000000a5 [ 1161.536483] RAX: ffffffffffffffda RBX: 00007ff699fe9b30 RCX: 000000000045a93a [ 1161.536493] RDX: 00007ff699fe9ad0 RSI: 0000000020000200 RDI: 00007ff699fe9af0 [ 1161.536502] RBP: 0000000020000200 R08: 00007ff699fe9b30 R09: 00007ff699fe9ad0 [ 1161.536510] R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000003 [ 1161.536522] R13: 0000000000000000 R14: 00000000004db380 R15: 00000000ffffffff 03:48:21 executing program 3: syz_mount_image$gfs2(&(0x7f0000000140)='gfs2\x00', &(0x7f0000000200)='./file0\x00', 0x126c4, 0x0, 0x0, 0x0, &(0x7f00000003c0)={[{@locktable={'locktable', 0x3d, '/'}}, {@lockproto_nolock='lockproto=lock_nolock'}]}) 03:48:21 executing program 0: socketpair$unix(0x1, 0x1, 0x0, &(0x7f0000000440)={0xffffffffffffffff, 0xffffffffffffffff}) ioctl$PERF_EVENT_IOC_ENABLE(r0, 0x8912, 0x400200) r1 = openat$kvm(0xffffffffffffff9c, &(0x7f00000000c0)='/dev/kvm\x00', 0x0, 0x0) openat$dlm_monitor(0xffffffffffffff9c, &(0x7f0000000340)='/dev/dlm-monitor\x00', 0x0, 0x0) r2 = ioctl$KVM_CREATE_VM(r1, 0xae01, 0x0) r3 = ioctl$KVM_CREATE_VCPU(r2, 0xae41, 0x0) syz_kvm_setup_cpu$x86(r2, 0xffffffffffffffff, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x0, 0x0, 0x0) syz_kvm_setup_cpu$x86(0xffffffffffffffff, r3, &(0x7f0000000000/0x18000)=nil, &(0x7f00000001c0)=[@text64={0x40, &(0x7f0000000040)="b9800000c00f3235001000000f30f24c0f2c49e8426dc4027d3493b80800003626660f7e676d660f1678b06cc403f9dfbeb70000000bc7442400f5000000c744240284d178bcff1c24f2f347dbe1", 0x4e}], 0x1, 0x48, 0x0, 0x0) socket$inet6_tcp(0xa, 0x1, 0x0) pipe2(&(0x7f0000000000), 0x0) ioctl$KVM_RUN(r3, 0xae80, 0x0) 03:48:21 executing program 5: r0 = socket$inet6(0xa, 0x2, 0x0) connect$inet6(r0, &(0x7f0000000180)={0xa, 0x10, 0x0, @local, 0x4}, 0x1c) [ 1161.655627] kobject_add_internal failed for _ with -EEXIST, don't try to register things with the same name in the same directory. [ 1161.685308] gfs2: fsid=_: error -17 adding sysfs files 03:48:21 executing program 1: r0 = openat$kvm(0xffffffffffffff9c, &(0x7f0000000140)='/dev/kvm\x00', 0x0, 0x0) r1 = ioctl$KVM_CREATE_VM(r0, 0xae01, 0x0) r2 = ioctl$KVM_CREATE_VCPU(r1, 0xae41, 0x0) ioctl$KVM_SET_USER_MEMORY_REGION(r1, 0x4020ae46, &(0x7f0000000400)={0x0, 0x3, 0x0, 0x2000, &(0x7f0000000000/0x2000)=nil}) syz_kvm_setup_cpu$x86(r1, 0xffffffffffffffff, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x0, 0x0, 0xfffffffffffffe78) sendmmsg$unix(0xffffffffffffffff, &(0x7f0000002780)=[{0x0, 0x0, &(0x7f0000001d00)=[{&(0x7f0000000bc0)="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", 0x3c5}], 0x1}], 0x1, 0x0) ioctl$KVM_REGISTER_COALESCED_MMIO(r1, 0x4010ae67, &(0x7f00000000c0)={0x0, 0x15200}) syz_kvm_setup_cpu$x86(0xffffffffffffffff, r2, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x8, 0x0, 0x0) ioctl$KVM_RUN(r2, 0xae80, 0x0) 03:48:21 executing program 5: r0 = socket$inet6(0xa, 0x2, 0x0) connect$inet6(r0, &(0x7f0000000180)={0xa, 0x7, 0x0, @local, 0x4}, 0x1c) [ 1161.842804] gfs2: fsid=_: Trying to join cluster "lock_nolock", "_" [ 1161.849237] gfs2: fsid=_: Now mounting FS... [ 1161.902112] sysfs: cannot create duplicate filename '/fs/gfs2/_' [ 1161.911023] gfs2: not a GFS2 filesystem [ 1161.915378] CPU: 1 PID: 23627 Comm: syz-executor3 Not tainted 4.20.0-next-20190103 #4 [ 1161.923359] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 1161.932711] Call Trace: [ 1161.935305] dump_stack+0x1db/0x2d0 [ 1161.938955] ? dump_stack_print_info.cold+0x20/0x20 [ 1161.943986] ? _raw_spin_unlock_irqrestore+0xa4/0xe0 [ 1161.949106] sysfs_warn_dup.cold+0x1c/0x31 [ 1161.953408] sysfs_create_dir_ns+0x2ce/0x330 [ 1161.957841] ? sysfs_create_mount_point+0xa0/0xa0 [ 1161.962697] ? do_raw_spin_trylock+0x270/0x270 [ 1161.967296] kobject_add_internal.cold+0x129/0x6d8 [ 1161.972239] ? kobj_ns_type_registered+0x60/0x60 [ 1161.977003] ? kfree_const+0x59/0x70 [ 1161.980724] ? rcu_read_lock_sched_held+0x110/0x130 [ 1161.985760] ? kfree+0x1fa/0x230 [ 1161.989157] ? kfree_const+0x5e/0x70 [ 1161.992879] kobject_init_and_add+0x101/0x160 [ 1161.997380] ? kobject_add_internal+0x4b0/0x4b0 [ 1162.002049] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 1162.007587] ? vsnprintf+0x368/0x1b10 [ 1162.011394] gfs2_sys_fs_add+0x210/0x500 [ 1162.015470] ? recover_store+0x1a0/0x1a0 [ 1162.019539] ? snprintf+0xbb/0xf0 [ 1162.023005] ? vsprintf+0x30/0x40 [ 1162.026458] ? set_blocksize+0x2bf/0x340 [ 1162.030548] ? memcpy+0x46/0x50 [ 1162.033857] fill_super+0x894/0x1990 [ 1162.037577] ? gfs2_online_uevent+0x2d0/0x2d0 [ 1162.042079] ? snprintf+0xbb/0xf0 [ 1162.045532] ? vsprintf+0x40/0x40 [ 1162.049011] ? ns_capable_common+0x141/0x170 [ 1162.053450] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 1162.058460] ? set_blocksize+0x2bf/0x340 [ 1162.062522] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 1162.068079] gfs2_mount+0x5db/0x6ee [ 1162.071714] ? fill_super+0x1990/0x1990 [ 1162.075711] ? vfs_parse_fs_string+0x1c5/0x2b0 [ 1162.080293] ? vfs_parse_fs_param+0x4b0/0x4b0 [ 1162.084790] ? fill_super+0x1990/0x1990 [ 1162.088759] legacy_get_tree+0xf2/0x200 [ 1162.092799] vfs_get_tree+0x123/0x450 [ 1162.096631] do_mount+0x1622/0x2fa0 [ 1162.100265] ? copy_mount_string+0x40/0x40 [ 1162.104500] ? kmem_cache_alloc_trace+0x354/0x760 [ 1162.109362] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 1162.114892] ? copy_mount_options+0x30e/0x440 [ 1162.119388] ksys_mount+0xdb/0x150 [ 1162.122933] __x64_sys_mount+0xbe/0x150 [ 1162.126911] do_syscall_64+0x1a3/0x800 [ 1162.130801] ? syscall_return_slowpath+0x5f0/0x5f0 [ 1162.135739] ? prepare_exit_to_usermode+0x232/0x3b0 [ 1162.140755] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 1162.145604] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 1162.150801] RIP: 0033:0x45a93a [ 1162.153991] Code: b8 a6 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 ed 8c fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 0f 83 ca 8c fb ff c3 66 0f 1f 84 00 00 00 00 00 [ 1162.172884] RSP: 002b:00007fdbfe5d2a88 EFLAGS: 00000206 ORIG_RAX: 00000000000000a5 [ 1162.180599] RAX: ffffffffffffffda RBX: 00007fdbfe5d2b30 RCX: 000000000045a93a [ 1162.187875] RDX: 00007fdbfe5d2ad0 RSI: 0000000020000200 RDI: 00007fdbfe5d2af0 [ 1162.195153] RBP: 0000000020000200 R08: 00007fdbfe5d2b30 R09: 00007fdbfe5d2ad0 [ 1162.202416] R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000003 [ 1162.209679] R13: 0000000000000000 R14: 00000000004db380 R15: 00000000ffffffff [ 1162.227422] gfs2: fsid=_: can't read superblock [ 1162.258214] gfs2: fsid=_: can't read superblock: -22 [ 1162.339214] kobject_add_internal failed for _ with -EEXIST, don't try to register things with the same name in the same directory. [ 1162.355921] gfs2: fsid=_: error -17 adding sysfs files 03:48:22 executing program 4: syz_mount_image$gfs2(&(0x7f0000000140)='gfs2\x00', &(0x7f0000000200)='./file0\x00', 0x1a00000000000000, 0x0, 0x0, 0x0, &(0x7f00000003c0)={[{@locktable={'locktable', 0x3d, '/'}}, {@lockproto_nolock='lockproto=lock_nolock'}]}) socketpair$unix(0x1, 0x1, 0x0, &(0x7f0000000180)) 03:48:22 executing program 5: r0 = socket$inet6(0xa, 0x2, 0x0) connect$inet6(r0, &(0x7f0000000180)={0xa, 0x5000000, 0x0, @local, 0x4}, 0x1c) 03:48:22 executing program 1: r0 = openat$kvm(0xffffffffffffff9c, &(0x7f0000000140)='/dev/kvm\x00', 0x0, 0x0) r1 = ioctl$KVM_CREATE_VM(r0, 0xae01, 0x0) r2 = ioctl$KVM_CREATE_VCPU(r1, 0xae41, 0x0) ioctl$KVM_SET_USER_MEMORY_REGION(r1, 0x4020ae46, &(0x7f0000000400)={0x0, 0x3, 0x0, 0x2000, &(0x7f0000000000/0x2000)=nil}) syz_kvm_setup_cpu$x86(r1, 0xffffffffffffffff, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x0, 0x0, 0xfffffffffffffe78) sendmmsg$unix(0xffffffffffffffff, &(0x7f0000002780)=[{0x0, 0x0, &(0x7f0000001d00)=[{&(0x7f0000000bc0)="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", 0x3c5}], 0x1}], 0x1, 0x0) ioctl$KVM_REGISTER_COALESCED_MMIO(r1, 0x4010ae67, &(0x7f00000000c0)={0x0, 0x15200}) syz_kvm_setup_cpu$x86(0xffffffffffffffff, r2, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x8, 0x0, 0x0) r3 = syz_open_dev$adsp(&(0x7f0000000000)='/dev/adsp#\x00', 0x3, 0x200) ioctl$SG_GET_SCSI_ID(r3, 0x2276, &(0x7f0000000040)) ioctl$KVM_RUN(r2, 0xae80, 0x0) 03:48:22 executing program 5: r0 = socket$inet6(0xa, 0x2, 0x0) connect$inet6(r0, &(0x7f0000000180)={0xa, 0x300, 0x0, @local, 0x4}, 0x1c) 03:48:22 executing program 3: syz_mount_image$gfs2(&(0x7f0000000140)='gfs2\x00', &(0x7f0000000200)='./file0\x00', 0xffffffffffffffff, 0x0, 0x0, 0x0, &(0x7f00000003c0)={[{@locktable={'locktable', 0x3d, '/'}}, {@lockproto_nolock='lockproto=lock_nolock'}]}) 03:48:22 executing program 0: socketpair$unix(0x1, 0x1, 0x0, &(0x7f0000000440)={0xffffffffffffffff}) fcntl$dupfd(r0, 0x406, r0) syz_open_dev$sndpcmp(&(0x7f0000000100)='/dev/snd/pcmC#D#p\x00', 0xfff, 0x101400) r1 = openat$cachefiles(0xffffffffffffff9c, &(0x7f0000000140)='/dev/cachefiles\x00', 0x300, 0x0) ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x3bd8) r2 = openat$kvm(0xffffffffffffff9c, &(0x7f00000000c0)='/dev/kvm\x00', 0x0, 0x0) openat$dlm_monitor(0xffffffffffffff9c, &(0x7f0000000340)='/dev/dlm-monitor\x00', 0x0, 0x0) r3 = ioctl$KVM_CREATE_VM(r2, 0xae01, 0x0) r4 = ioctl$KVM_CREATE_VCPU(r3, 0xae41, 0x0) syz_kvm_setup_cpu$x86(r3, 0xffffffffffffffff, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x0, 0x0, 0x0) syz_kvm_setup_cpu$x86(0xffffffffffffffff, r4, &(0x7f0000000000/0x18000)=nil, &(0x7f00000001c0)=[@text64={0x40, &(0x7f0000000040)="b9800000c00f3235001000000f30f24c0f2c49e8426dc4027d3493b80800003626660f7e676d660f1678b06cc403f9dfbeb70000000bc7442400f5000000c744240284d178bcff1c24f2f347dbe1", 0x4e}], 0x1, 0x48, 0x0, 0x0) pipe2(&(0x7f0000000000), 0x0) ioctl$KVM_RUN(r4, 0xae80, 0x0) sendmsg$nfc_llcp(r1, &(0x7f00000003c0)={&(0x7f0000000200)={0x27, 0x1, 0x2, 0x7, 0x9, 0x8bb, "697d674fec1e08ab7658e244a97be8044eb6219fbd8bbaa6f846b8db3708c1a9ac841a9dcd4a4ee80027a3abfb9090bd9f207481e8f93a72e8b4ed2fad70f4", 0x18}, 0x60, &(0x7f0000000380)=[{&(0x7f0000000480)="79f423716e04e8b9e4ca8020df66a423dc71ee63caeb6d4fc86cd85682103299dea265b3d7e65c9308b7148852cd4c8649d7e5f5a1da7c9e63d0cfa7193853f65bbab855b3e946e4f409f4faa1e186e789718760bfbc7a91491af5c43d6d627f4ccefcf5de21a6c8e27cfdf35402859d811996d521cd1896fdcf475ef87443b4a6cd07b958dc1c69af8f87ab8fd96e9ef75ba7999f5b558801dd475df6b887b163709534a19fd7a7bb662e6410ff9adbd0aa9f6ed7ea117535eddac35b0bc63b9b2f8da1b3d987466463757d16bd7d05ddfb0e13900c9770d8a67478", 0xdc}, {&(0x7f0000000280)="5680c37aafedc4599c3b25e1e240409f3d8d2c54e5d1179b139e7e1cc0289453cb550f1e97dda86cdf765e132de02eeac3abb2ff30203fc23cb25f285950922e2a97ed3bef00616aa0cf6f050388083cbd788b6dd23dc1bb66af4f351397b36b0a4e511e9137d65726ace9", 0x6b}, {&(0x7f0000000300)="6b73f6bb7f81312b0adf859851f158c055d104d4d12f3346c8603786c472882fbe054a4321755e1acd4601ab864655364af1", 0x32}], 0x3, &(0x7f0000000580)={0x88, 0x11d, 0xfffffffffffffffc, "923e9d79ec5ea42ac4560186de6041cdf97c13c92c93e159dbd8af10bb15e9ca441cfe03c0f4127c72da4936eb7dad33135fe33cd754c3e75cd691043058ef1238c611e6634f82c21a4d21f4c46b6793f0ee50201728d388e4d10478c189ed60a533cf28c16f2cd1f7c1828c14043e7db8b5aa58"}, 0x88, 0x4}, 0x8000) ioctl$VHOST_SET_VRING_ENDIAN(r1, 0x4008af13, &(0x7f0000000180)={0x1, 0x4}) [ 1162.564684] gfs2: fsid=_: Trying to join cluster "lock_nolock", "_" [ 1162.571148] gfs2: fsid=_: Now mounting FS... [ 1162.649456] sysfs: cannot create duplicate filename '/fs/gfs2/_' [ 1162.673493] CPU: 1 PID: 23657 Comm: syz-executor3 Not tainted 4.20.0-next-20190103 #4 [ 1162.681474] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 1162.690853] Call Trace: [ 1162.693459] dump_stack+0x1db/0x2d0 [ 1162.697108] ? dump_stack_print_info.cold+0x20/0x20 [ 1162.702138] ? _raw_spin_unlock_irqrestore+0xa4/0xe0 [ 1162.707260] sysfs_warn_dup.cold+0x1c/0x31 [ 1162.711504] sysfs_create_dir_ns+0x2ce/0x330 [ 1162.715920] ? sysfs_create_mount_point+0xa0/0xa0 [ 1162.715935] ? do_raw_spin_trylock+0x270/0x270 [ 1162.715962] kobject_add_internal.cold+0x129/0x6d8 [ 1162.715983] ? kobj_ns_type_registered+0x60/0x60 [ 1162.715998] ? kfree_const+0x59/0x70 [ 1162.725398] ? rcu_read_lock_sched_held+0x110/0x130 [ 1162.743766] ? kfree+0x1fa/0x230 [ 1162.747152] ? kfree_const+0x5e/0x70 [ 1162.750880] kobject_init_and_add+0x101/0x160 [ 1162.755403] ? kobject_add_internal+0x4b0/0x4b0 [ 1162.760096] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 1162.765642] ? vsnprintf+0x368/0x1b10 [ 1162.769476] gfs2_sys_fs_add+0x210/0x500 [ 1162.773541] ? recover_store+0x1a0/0x1a0 [ 1162.777613] ? snprintf+0xbb/0xf0 [ 1162.781084] ? vsprintf+0x30/0x40 [ 1162.784551] ? set_blocksize+0x2bf/0x340 [ 1162.788664] ? memcpy+0x46/0x50 [ 1162.791951] fill_super+0x894/0x1990 [ 1162.795678] ? gfs2_online_uevent+0x2d0/0x2d0 [ 1162.800185] ? snprintf+0xbb/0xf0 [ 1162.803640] ? vsprintf+0x40/0x40 [ 1162.807107] ? ns_capable_common+0x141/0x170 [ 1162.811522] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 1162.816539] ? set_blocksize+0x2bf/0x340 [ 1162.820611] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 1162.826156] gfs2_mount+0x5db/0x6ee [ 1162.829794] ? fill_super+0x1990/0x1990 [ 1162.833843] ? vfs_parse_fs_string+0x1c5/0x2b0 [ 1162.838454] ? vfs_parse_fs_param+0x4b0/0x4b0 [ 1162.842957] ? fill_super+0x1990/0x1990 03:48:22 executing program 2: r0 = socket$inet(0x2, 0x4000000000000001, 0x0) setsockopt$inet_tcp_int(r0, 0x6, 0x80000000000002, &(0x7f0000000040)=0x74, 0x4) bind$inet(r0, &(0x7f0000000180)={0x2, 0x4e23, @multicast1}, 0x10) sendto$inet(r0, 0x0, 0x0, 0x200007fd, &(0x7f0000e68000)={0x2, 0x4e23, @local}, 0x10) write$binfmt_elf64(r0, &(0x7f00000012c0)=ANY=[@ANYBLOB="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"], 0x209) mmap(&(0x7f0000000000/0xb36000)=nil, 0xb36000, 0x3, 0x8031, 0xffffffffffffffff, 0x0) sendmmsg$inet_sctp(r0, &(0x7f0000002600)=[{0x0, 0x1a0ffffffff, &(0x7f0000000240)=[{&(0x7f0000000380)="d4", 0x1}], 0x1}], 0x1, 0x0) 03:48:22 executing program 5: r0 = socket$inet6(0xa, 0x2, 0x0) connect$inet6(r0, &(0x7f0000000180)={0xa, 0x10000000, 0x0, @local, 0x4}, 0x1c) [ 1162.846959] legacy_get_tree+0xf2/0x200 [ 1162.850968] vfs_get_tree+0x123/0x450 [ 1162.854789] do_mount+0x1622/0x2fa0 [ 1162.858445] ? copy_mount_string+0x40/0x40 [ 1162.862691] ? kmem_cache_alloc_trace+0x354/0x760 [ 1162.867564] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 1162.873117] ? copy_mount_options+0x30e/0x440 [ 1162.877670] ksys_mount+0xdb/0x150 [ 1162.881226] __x64_sys_mount+0xbe/0x150 [ 1162.885211] do_syscall_64+0x1a3/0x800 [ 1162.889118] ? syscall_return_slowpath+0x5f0/0x5f0 [ 1162.894053] ? prepare_exit_to_usermode+0x232/0x3b0 [ 1162.899103] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 1162.903967] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 1162.909160] RIP: 0033:0x45a93a [ 1162.912372] Code: b8 a6 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 ed 8c fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 0f 83 ca 8c fb ff c3 66 0f 1f 84 00 00 00 00 00 [ 1162.913244] gfs2: not a GFS2 filesystem [ 1162.931267] RSP: 002b:00007fdbfe5d2a88 EFLAGS: 00000206 ORIG_RAX: 00000000000000a5 [ 1162.931280] RAX: ffffffffffffffda RBX: 00007fdbfe5d2b30 RCX: 000000000045a93a 03:48:22 executing program 5: r0 = socket$inet6(0xa, 0x2, 0x0) connect$inet6(r0, &(0x7f0000000180)={0xa, 0x3000000, 0x0, @local, 0x4}, 0x1c) [ 1162.931288] RDX: 00007fdbfe5d2ad0 RSI: 0000000020000200 RDI: 00007fdbfe5d2af0 [ 1162.931296] RBP: 0000000020000200 R08: 00007fdbfe5d2b30 R09: 00007fdbfe5d2ad0 [ 1162.931304] R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000003 [ 1162.931312] R13: 0000000000000000 R14: 00000000004db380 R15: 00000000ffffffff [ 1162.983381] kobject_add_internal failed for _ with -EEXIST, don't try to register things with the same name in the same directory. [ 1163.010717] gfs2: fsid=_: error -17 adding sysfs files [ 1163.087572] gfs2: fsid=_: can't read superblock [ 1163.097742] sysfs: cannot create duplicate filename '/fs/gfs2/_' [ 1163.115980] gfs2: fsid=_: can't read superblock: -22 [ 1163.126340] CPU: 1 PID: 23657 Comm: syz-executor3 Not tainted 4.20.0-next-20190103 #4 [ 1163.134314] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 1163.143699] Call Trace: [ 1163.146302] dump_stack+0x1db/0x2d0 [ 1163.149933] ? dump_stack_print_info.cold+0x20/0x20 [ 1163.154955] ? _raw_spin_unlock_irqrestore+0xa4/0xe0 [ 1163.160076] sysfs_warn_dup.cold+0x1c/0x31 [ 1163.164337] sysfs_create_dir_ns+0x2ce/0x330 [ 1163.168749] ? sysfs_create_mount_point+0xa0/0xa0 [ 1163.173615] ? do_raw_spin_trylock+0x270/0x270 [ 1163.178250] kobject_add_internal.cold+0x129/0x6d8 [ 1163.183213] ? kobj_ns_type_registered+0x60/0x60 [ 1163.187970] ? kfree_const+0x59/0x70 [ 1163.191687] ? rcu_read_lock_sched_held+0x110/0x130 [ 1163.196706] ? kfree+0x1fa/0x230 [ 1163.200088] ? kfree_const+0x5e/0x70 [ 1163.203811] kobject_init_and_add+0x101/0x160 [ 1163.208321] ? kobject_add_internal+0x4b0/0x4b0 [ 1163.213022] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 1163.218585] ? vsnprintf+0x368/0x1b10 [ 1163.222413] gfs2_sys_fs_add+0x210/0x500 [ 1163.226476] ? recover_store+0x1a0/0x1a0 [ 1163.230561] ? snprintf+0xbb/0xf0 [ 1163.234020] ? vsprintf+0x30/0x40 [ 1163.237479] ? set_blocksize+0x2bf/0x340 [ 1163.241555] ? memcpy+0x46/0x50 [ 1163.244894] fill_super+0x894/0x1990 [ 1163.248615] ? gfs2_online_uevent+0x2d0/0x2d0 [ 1163.253126] ? snprintf+0xbb/0xf0 [ 1163.256573] ? vsprintf+0x40/0x40 [ 1163.260022] ? ns_capable_common+0x141/0x170 [ 1163.264422] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 1163.269435] ? set_blocksize+0x2bf/0x340 [ 1163.273494] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 1163.279029] gfs2_mount+0x5db/0x6ee [ 1163.282652] ? fill_super+0x1990/0x1990 [ 1163.286660] ? vfs_parse_fs_string+0x1c5/0x2b0 [ 1163.291233] ? vfs_parse_fs_param+0x4b0/0x4b0 [ 1163.295738] ? fill_super+0x1990/0x1990 [ 1163.299700] legacy_get_tree+0xf2/0x200 [ 1163.303677] vfs_get_tree+0x123/0x450 [ 1163.307470] do_mount+0x1622/0x2fa0 [ 1163.311101] ? copy_mount_string+0x40/0x40 [ 1163.315333] ? kmem_cache_alloc_trace+0x354/0x760 [ 1163.320181] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 1163.325711] ? copy_mount_options+0x30e/0x440 [ 1163.330200] ksys_mount+0xdb/0x150 [ 1163.333751] __x64_sys_mount+0xbe/0x150 [ 1163.337732] do_syscall_64+0x1a3/0x800 [ 1163.341618] ? syscall_return_slowpath+0x5f0/0x5f0 [ 1163.346569] ? prepare_exit_to_usermode+0x232/0x3b0 [ 1163.351584] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 1163.356442] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 1163.361634] RIP: 0033:0x45a93a [ 1163.364847] Code: b8 a6 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 ed 8c fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 0f 83 ca 8c fb ff c3 66 0f 1f 84 00 00 00 00 00 03:48:23 executing program 5: r0 = socket$inet6(0xa, 0x2, 0x0) connect$inet6(r0, &(0x7f0000000180)={0xa, 0x2, 0x0, @local, 0x4}, 0x1c) [ 1163.383736] RSP: 002b:00007fdbfe5d2a88 EFLAGS: 00000206 ORIG_RAX: 00000000000000a5 [ 1163.391465] RAX: ffffffffffffffda RBX: 00007fdbfe5d2b30 RCX: 000000000045a93a [ 1163.398731] RDX: 00007fdbfe5d2ad0 RSI: 0000000020000200 RDI: 00007fdbfe5d2af0 [ 1163.405992] RBP: 0000000020000200 R08: 00007fdbfe5d2b30 R09: 00007fdbfe5d2ad0 [ 1163.413265] R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000003 [ 1163.420690] R13: 0000000000000000 R14: 00000000004db380 R15: 00000000ffffffff 03:48:23 executing program 0: openat$kvm(0xffffffffffffff9c, &(0x7f0000000100)='/dev/kvm\x00', 0x440, 0x0) socketpair$unix(0x1, 0x1, 0x0, &(0x7f0000000440)={0xffffffffffffffff, 0xffffffffffffffff}) ioctl$PERF_EVENT_IOC_ENABLE(r0, 0x8912, 0x400200) r1 = openat$kvm(0xffffffffffffff9c, &(0x7f00000000c0)='/dev/kvm\x00', 0x0, 0x0) r2 = openat$dsp(0xffffffffffffff9c, &(0x7f00000002c0)='/dev/dsp\x00', 0x201, 0x0) ioctl$SCSI_IOCTL_SYNC(r2, 0x4) r3 = openat$dlm_monitor(0xffffffffffffff9c, &(0x7f0000000340)='/dev/dlm-monitor\x00', 0x0, 0x0) getsockopt$inet_sctp_SCTP_PRIMARY_ADDR(r3, 0x84, 0x6, &(0x7f0000000200)={0x0, @in={{0x2, 0x4e22, @dev={0xac, 0x14, 0x14, 0x16}}}}, &(0x7f0000000140)=0x84) setsockopt$inet_sctp_SCTP_PR_SUPPORTED(r3, 0x84, 0x71, &(0x7f0000000180)={r4, 0x5}, 0x8) r5 = ioctl$KVM_CREATE_VM(r1, 0xae01, 0x0) r6 = ioctl$KVM_CREATE_VCPU(r5, 0xae41, 0x0) syz_kvm_setup_cpu$x86(r5, 0xffffffffffffffff, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x0, 0x0, 0x0) syz_kvm_setup_cpu$x86(0xffffffffffffffff, r6, &(0x7f0000000000/0x18000)=nil, &(0x7f00000001c0)=[@text64={0x40, &(0x7f0000000040)="b9800000c00f3235001000000f30f24c0f2c49e8426dc4027d3493b80800003626660f7e676d660f1678b06cc403f9dfbeb70000000bc7442400f5000000c744240284d178bcff1c24f2f347dbe1", 0x4e}], 0x1, 0x48, 0x0, 0x0) pipe2(&(0x7f0000000000), 0x0) ioctl$KVM_RUN(r6, 0xae80, 0x0) 03:48:23 executing program 4: syz_mount_image$gfs2(&(0x7f0000000140)='gfs2\x00', &(0x7f0000000200)='./file0\x00', 0x97ffffff00000000, 0x0, 0x0, 0x0, &(0x7f00000003c0)={[{@locktable={'locktable', 0x3d, '/'}}, {@lockproto_nolock='lockproto=lock_nolock'}]}) socketpair$unix(0x1, 0x1, 0x0, &(0x7f0000000180)) 03:48:23 executing program 5: r0 = socket$inet6(0xa, 0x2, 0x0) connect$inet6(r0, &(0x7f0000000180)={0xa, 0x6, 0x0, @local, 0x4}, 0x1c) [ 1163.637762] gfs2: fsid=_: Trying to join cluster "lock_nolock", "_" [ 1163.669647] gfs2: fsid=_: Now mounting FS... [ 1163.683911] gfs2: not a GFS2 filesystem 03:48:23 executing program 5: r0 = socket$inet6(0xa, 0x2, 0x0) connect$inet6(r0, &(0x7f0000000180)={0xa, 0x200000000000000, 0x0, @local, 0x4}, 0x1c) [ 1163.700212] gfs2: fsid=_: can't read superblock [ 1163.702815] kobject_add_internal failed for _ with -EEXIST, don't try to register things with the same name in the same directory. [ 1163.705270] gfs2: fsid=_: can't read superblock: -22 [ 1163.756544] gfs2: fsid=_: error -17 adding sysfs files 03:48:23 executing program 1: r0 = openat$kvm(0xffffffffffffff9c, &(0x7f0000000140)='/dev/kvm\x00', 0x0, 0x0) r1 = ioctl$KVM_CREATE_VM(r0, 0xae01, 0x0) r2 = ioctl$KVM_CREATE_VCPU(r1, 0xae41, 0x0) ioctl$KVM_SET_USER_MEMORY_REGION(r1, 0x4020ae46, &(0x7f0000000400)={0x0, 0x3, 0x0, 0x2000, &(0x7f0000000000/0x2000)=nil}) clock_getres(0x6, &(0x7f0000000000)) syz_kvm_setup_cpu$x86(r1, 0xffffffffffffffff, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x0, 0x0, 0xfffffffffffffe78) sendmmsg$unix(0xffffffffffffffff, &(0x7f0000002780)=[{0x0, 0x0, &(0x7f0000001d00)=[{&(0x7f0000000bc0)="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", 0x3c5}], 0x1}], 0x1, 0x0) ioctl$KVM_REGISTER_COALESCED_MMIO(r1, 0x4010ae67, &(0x7f00000000c0)={0x0, 0x15200}) syz_kvm_setup_cpu$x86(0xffffffffffffffff, r2, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x8, 0x0, 0x0) ioctl$KVM_RUN(r2, 0xae80, 0x0) ioctl$KVM_SET_GUEST_DEBUG(r2, 0x4048ae9b, &(0x7f0000000040)={0x80000, 0x0, [0x4, 0x7, 0x7, 0x353a, 0xb, 0x1, 0xea, 0xf0cf]}) r3 = openat$dlm_control(0xffffffffffffff9c, &(0x7f0000000100)='/dev/dlm-control\x00', 0x20000, 0x0) ioctl$SNDRV_CTL_IOCTL_CARD_INFO(r3, 0x81785501, &(0x7f0000000180)=""/75) 03:48:23 executing program 5: r0 = socket$inet6(0xa, 0x2, 0x0) connect$inet6(r0, &(0x7f0000000180)={0xa, 0xf5ffffff00000000, 0x0, @local, 0x4}, 0x1c) 03:48:23 executing program 3: syz_mount_image$gfs2(&(0x7f0000000140)='gfs2\x00', &(0x7f0000000200)='./file0\x00', 0x3f000000, 0x0, 0x0, 0x0, &(0x7f00000003c0)={[{@locktable={'locktable', 0x3d, '/'}}, {@lockproto_nolock='lockproto=lock_nolock'}]}) 03:48:23 executing program 5: r0 = socket$inet6(0xa, 0x2, 0x0) connect$inet6(r0, &(0x7f0000000180)={0xa, 0x600000000000000, 0x0, @local, 0x4}, 0x1c) [ 1163.952250] gfs2: fsid=_: Trying to join cluster "lock_nolock", "_" [ 1163.986528] gfs2: fsid=_: Now mounting FS... 03:48:23 executing program 2: r0 = socket$inet(0x2, 0x4000000000000001, 0x0) setsockopt$inet_tcp_int(r0, 0x6, 0x80000000000002, &(0x7f0000000040)=0x74, 0x4) bind$inet(r0, &(0x7f0000000180)={0x2, 0x4e23, @multicast1}, 0x10) sendto$inet(r0, 0x0, 0x0, 0x200007fd, &(0x7f0000e68000)={0x2, 0x4e23, @local}, 0x10) write$binfmt_elf64(r0, &(0x7f00000012c0)=ANY=[@ANYBLOB="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"], 0x209) mmap(&(0x7f0000000000/0xb36000)=nil, 0xb36000, 0x3, 0x8031, 0xffffffffffffffff, 0x0) sendmmsg$inet_sctp(r0, &(0x7f0000002600)=[{0x0, 0x900, &(0x7f0000000240)=[{&(0x7f0000000380)="d4", 0x1}], 0x1}], 0x1, 0x0) [ 1164.014161] gfs2: not a GFS2 filesystem 03:48:23 executing program 0: socketpair$unix(0x1, 0x1, 0x0, &(0x7f0000000440)={0xffffffffffffffff, 0xffffffffffffffff}) ioctl$PERF_EVENT_IOC_ENABLE(r0, 0x8912, 0x400200) r1 = openat$kvm(0xffffffffffffff9c, &(0x7f00000000c0)='/dev/kvm\x00', 0x0, 0x0) r2 = openat$dlm_monitor(0xffffffffffffff9c, &(0x7f0000000340)='/dev/dlm-monitor\x00', 0x0, 0x0) r3 = ioctl$KVM_CREATE_VM(r1, 0xae01, 0x0) r4 = ioctl$KVM_CREATE_VCPU(r3, 0xae41, 0x0) syz_kvm_setup_cpu$x86(r3, 0xffffffffffffffff, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x0, 0x0, 0x0) syz_kvm_setup_cpu$x86(0xffffffffffffffff, r4, &(0x7f0000000000/0x18000)=nil, &(0x7f00000001c0)=[@text64={0x40, &(0x7f0000000040)="b9800000c00f3235001000000f30f24c0f2c49e8426dc4027d3493b80800003626660f7e676d660f1678b06cc403f9dfbeb70000000bc7442400f5000000c744240284d178bcff1c24f2f347dbe1", 0x4e}], 0x1, 0x48, 0x0, 0x0) ioctl$VIDIOC_SUBDEV_DV_TIMINGS_CAP(r2, 0xc0905664, &(0x7f0000000100)={0x0, 0x0, [], @raw_data=[0x100000000, 0x1, 0x2, 0xfffffffffffffffa, 0xca, 0x1, 0x1ff, 0x120, 0x0, 0x0, 0x5, 0x20c4, 0x1, 0x7fff, 0x9, 0x2, 0x7, 0x6a, 0x400, 0xbf2, 0xfffffffffffffffd, 0x9, 0x8, 0x8, 0x1, 0x95, 0x1ff, 0xffffffff, 0xff1d, 0x5, 0x20, 0x800]}) pipe2(&(0x7f0000000000), 0x0) ioctl$KVM_RUN(r4, 0xae80, 0x0) [ 1164.038567] gfs2: fsid=_: can't read superblock [ 1164.057860] gfs2: fsid=_: can't read superblock: -22 03:48:23 executing program 5: r0 = socket$inet6(0xa, 0x2, 0x0) connect$inet6(r0, &(0x7f0000000180)={0xa, 0x2000000, 0x0, @local, 0x4}, 0x1c) 03:48:23 executing program 4: syz_mount_image$gfs2(&(0x7f0000000140)='gfs2\x00', &(0x7f0000000200)='./file0\x00', 0xd8250100, 0x0, 0x0, 0x0, &(0x7f00000003c0)={[{@locktable={'locktable', 0x3d, '/'}}, {@lockproto_nolock='lockproto=lock_nolock'}]}) socketpair$unix(0x1, 0x1, 0x0, &(0x7f0000000180)) [ 1164.218373] gfs2: fsid=_: Trying to join cluster "lock_nolock", "_" [ 1164.283159] gfs2: fsid=_: Now mounting FS... [ 1164.305969] gfs2: not a GFS2 filesystem 03:48:24 executing program 5: r0 = socket$inet6(0xa, 0x2, 0x0) connect$inet6(r0, &(0x7f0000000180)={0xa, 0x3f00000000000000, 0x0, @local, 0x4}, 0x1c) [ 1164.338780] gfs2: fsid=_: can't read superblock [ 1164.360298] gfs2: fsid=_: can't read superblock: -22 [ 1164.372849] sysfs: cannot create duplicate filename '/fs/gfs2/_' [ 1164.420466] CPU: 0 PID: 23737 Comm: syz-executor4 Not tainted 4.20.0-next-20190103 #4 [ 1164.428446] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 1164.437791] Call Trace: [ 1164.437814] dump_stack+0x1db/0x2d0 [ 1164.437838] ? dump_stack_print_info.cold+0x20/0x20 [ 1164.437859] ? _raw_spin_unlock_irqrestore+0xa4/0xe0 [ 1164.437880] sysfs_warn_dup.cold+0x1c/0x31 [ 1164.458472] sysfs_create_dir_ns+0x2ce/0x330 [ 1164.462891] ? sysfs_create_mount_point+0xa0/0xa0 [ 1164.467743] ? do_raw_spin_trylock+0x270/0x270 [ 1164.472369] kobject_add_internal.cold+0x129/0x6d8 [ 1164.477316] ? kobj_ns_type_registered+0x60/0x60 [ 1164.482111] ? kfree_const+0x59/0x70 [ 1164.485871] ? rcu_read_lock_sched_held+0x110/0x130 [ 1164.490902] ? kfree+0x1fa/0x230 [ 1164.494278] ? kfree_const+0x5e/0x70 [ 1164.498014] kobject_init_and_add+0x101/0x160 [ 1164.502517] ? kobject_add_internal+0x4b0/0x4b0 [ 1164.507207] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 1164.512756] ? vsnprintf+0x368/0x1b10 [ 1164.516571] gfs2_sys_fs_add+0x210/0x500 [ 1164.520641] ? recover_store+0x1a0/0x1a0 [ 1164.524714] ? snprintf+0xbb/0xf0 [ 1164.528444] ? vsprintf+0x30/0x40 [ 1164.531906] ? set_blocksize+0x2bf/0x340 [ 1164.531925] ? memcpy+0x46/0x50 [ 1164.531946] fill_super+0x894/0x1990 [ 1164.531972] ? gfs2_online_uevent+0x2d0/0x2d0 [ 1164.531992] ? snprintf+0xbb/0xf0 [ 1164.542989] ? vsprintf+0x40/0x40 [ 1164.543008] ? ns_capable_common+0x141/0x170 [ 1164.543020] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 1164.543032] ? set_blocksize+0x2bf/0x340 [ 1164.543047] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 1164.543070] gfs2_mount+0x5db/0x6ee [ 1164.543085] ? fill_super+0x1990/0x1990 [ 1164.551142] ? vfs_parse_fs_string+0x1c5/0x2b0 [ 1164.551160] ? vfs_parse_fs_param+0x4b0/0x4b0 [ 1164.551176] ? fill_super+0x1990/0x1990 [ 1164.551191] legacy_get_tree+0xf2/0x200 [ 1164.559031] vfs_get_tree+0x123/0x450 [ 1164.568079] do_mount+0x1622/0x2fa0 [ 1164.568114] ? copy_mount_string+0x40/0x40 [ 1164.568130] ? kmem_cache_alloc_trace+0x354/0x760 [ 1164.568144] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 1164.577288] ? _copy_from_user+0xdd/0x150 [ 1164.577305] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 1164.577319] ? copy_mount_options+0x30e/0x440 [ 1164.577368] ksys_mount+0xdb/0x150 [ 1164.577384] __x64_sys_mount+0xbe/0x150 [ 1164.585922] do_syscall_64+0x1a3/0x800 [ 1164.585939] ? syscall_return_slowpath+0x5f0/0x5f0 [ 1164.585954] ? prepare_exit_to_usermode+0x232/0x3b0 [ 1164.585973] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 1164.585993] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 1164.586004] RIP: 0033:0x45a93a [ 1164.594440] Code: b8 a6 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 ed 8c fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 0f 83 ca 8c fb ff c3 66 0f 1f 84 00 00 00 00 00 [ 1164.594448] RSP: 002b:00007ff699fe9a88 EFLAGS: 00000206 ORIG_RAX: 00000000000000a5 [ 1164.594462] RAX: ffffffffffffffda RBX: 00007ff699fe9b30 RCX: 000000000045a93a [ 1164.594470] RDX: 00007ff699fe9ad0 RSI: 0000000020000200 RDI: 00007ff699fe9af0 [ 1164.594479] RBP: 0000000020000200 R08: 00007ff699fe9b30 R09: 00007ff699fe9ad0 03:48:24 executing program 5: r0 = socket$inet6(0xa, 0x2, 0x0) connect$inet6(r0, &(0x7f0000000180)={0xa, 0x1000000, 0x0, @local, 0x4}, 0x1c) 03:48:24 executing program 1: r0 = openat$kvm(0xffffffffffffff9c, &(0x7f0000000140)='/dev/kvm\x00', 0x0, 0x0) r1 = ioctl$KVM_CREATE_VM(r0, 0xae01, 0x0) r2 = ioctl$KVM_CREATE_VCPU(r1, 0xae41, 0x0) ioctl$KVM_SET_USER_MEMORY_REGION(r1, 0x4020ae46, &(0x7f0000000400)={0x0, 0x3, 0x0, 0x2000, &(0x7f0000000000/0x2000)=nil}) r3 = openat$full(0xffffffffffffff9c, &(0x7f0000000000)='/dev/full\x00', 0x4800, 0x0) r4 = syz_genetlink_get_family_id$ipvs(&(0x7f00000001c0)='IPVS\x00') sendmsg$IPVS_CMD_DEL_DAEMON(r3, &(0x7f00000002c0)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x801000}, 0xc, &(0x7f0000000280)={&(0x7f0000000200)=ANY=[@ANYBLOB='T\x00\x00\x00', @ANYRES16=r4, @ANYBLOB="12032dbd7000fcdbdf250a000000300003000800040002000000140002007465616d5f736c6176655f3000000000080008000000000008000500ac1c141908000600010000800800060006000200"], 0x54}, 0x1, 0x0, 0x0, 0x4}, 0x4008000) ioctl$SNDRV_RAWMIDI_IOCTL_PARAMS(r3, 0xc0305710, &(0x7f0000000300)={0x0, 0x7, 0x7, 0x5c01}) ioctl$PERF_EVENT_IOC_MODIFY_ATTRIBUTES(r3, 0x4008240b, &(0x7f0000000040)={0x0, 0x70, 0x5, 0x0, 0xf83, 0x3267, 0x0, 0x6, 0x100, 0xf, 0x3, 0x5, 0x3, 0x2, 0x8, 0x200, 0x70, 0x1, 0xaa, 0x80000000, 0xf104, 0x3, 0x7fffffff, 0x6, 0xda0, 0x4, 0x10001, 0x58a5, 0x2, 0x3ff, 0x631e1b34, 0x1b8, 0x9, 0xda3c, 0x4ded, 0x1ff, 0x4, 0x6, 0x0, 0x0, 0x1, @perf_config_ext={0x2, 0x80000001}, 0x4020, 0x7ff, 0x101, 0x8, 0x3ad3, 0x1, 0x3f}) syz_kvm_setup_cpu$x86(r1, 0xffffffffffffffff, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x800000000000, 0x0, 0x0) sendmmsg$unix(0xffffffffffffffff, &(0x7f0000000100)=[{0x0, 0x268, &(0x7f0000002680)=[{&(0x7f0000000340)="7f0569911aeaa325cbbbd8c69df50f137ddccc5f19adfdb166f395b5a8c7521f229ada56288e52f4834ade999cc33ed81211a9e55231fffc41574dc0838f7e007cf5c0f0ff01d358f13a380b4a4ae3ebbb161d47984fbe74bcec99011871", 0x5e}, {&(0x7f0000000440)="67d6770f23d4c438b633fc0f9df5a716ef150eaac136e715259511463c18a02da9559b96351f7a2893f3a9164787419ef6e8dad7e6fe4683b2605881a2711c88c05362c4d815c65b0a79ceb60fbb13d56146256c6fc7fd9170a2588041093a27308dc2f9631fb4a8f17037faefc8c056d09a0fb0060aadcf3e1505", 0x7b}, {&(0x7f00000004c0)="e502678ee22e72bdd076d8f08aeb55d35115b1bd32c11c3524fdf1b14d40c06ac829123d35d2a9a3c970d14bf967bc06d171fac071ca4fe5b3ffb7c2623389cdaba23e3c7ad3745f0969f67c217c0d", 0x4f}, {&(0x7f0000000540)="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0x1000}, {&(0x7f0000001540)="258eb2c2f60763c27f26875cf2610814ee64e9a9051835557a5c6d50af482fa5371a1952d7825bbf44e84a386a162d028b2648fa05beeb7bc350512f25cd3cfe66d3b7ce2d512239dbcd5a10ab8a24f2427e2bd551efaeb7580c998d97102073c2d90978bc00d765e4fd68cc266bbb30d7d0c31c5c02fc3212fbcbbeadc4d8145ac914fb836d53b0a2d976a1d255cc9f1f1cb1b51acd532f39454dab40f420decda04a64e0740760742ad3", 0xab}, {&(0x7f0000001600)="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", 0xffffffffffffffac}, {&(0x7f0000002600)="965f7fe4a8d55128ab1e965e964e1a0b8ed5d398932c2cfa7370679d95d3c61cf522faea2055e9e4fcba8c140f98c322e8c380722259c46a49db04c4c63441794e595a8c70b030a8efa6474e486b316e21fa3b9ef33b410cecbadbc8693075d96af4e40e8541c353551f53f0372cde6bbdf00185bda0bcb031ff77", 0x7b}], 0x7}], 0x1, 0x0) ioctl$KVM_REGISTER_COALESCED_MMIO(r1, 0x4010ae67, &(0x7f00000000c0)={0x0, 0x15200}) syz_kvm_setup_cpu$x86(0xffffffffffffffff, r2, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x8, 0x0, 0x0) ioctl$KVM_RUN(r2, 0xae80, 0x0) [ 1164.594487] R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000003 [ 1164.594495] R13: 0000000000000000 R14: 00000000004db380 R15: 00000000ffffffff [ 1164.739295] kobject_add_internal failed for _ with -EEXIST, don't try to register things with the same name in the same directory. [ 1164.800032] gfs2: fsid=_: error -17 adding sysfs files 03:48:24 executing program 0: socketpair$unix(0x1, 0x1, 0x0, &(0x7f0000000440)={0xffffffffffffffff, 0xffffffffffffffff}) ioctl$PERF_EVENT_IOC_ENABLE(r0, 0x8912, 0x400200) r1 = openat$kvm(0xffffffffffffff9c, &(0x7f00000000c0)='/dev/kvm\x00', 0x0, 0x0) r2 = openat$dlm_monitor(0xffffffffffffff9c, &(0x7f0000000340)='/dev/dlm-monitor\x00', 0x0, 0x0) r3 = ioctl$KVM_CREATE_VM(r1, 0xae01, 0x0) write$RDMA_USER_CM_CMD_CREATE_ID(r2, &(0x7f0000000140)={0x0, 0x18, 0xfa00, {0x3, &(0x7f0000000100)={0xffffffffffffffff}, 0x13f, 0x3}}, 0x20) write$RDMA_USER_CM_CMD_RESOLVE_ROUTE(r2, &(0x7f0000000180)={0x4, 0x8, 0xfa00, {r4, 0x100}}, 0x10) r5 = ioctl$KVM_CREATE_VCPU(r3, 0xae41, 0x0) syz_kvm_setup_cpu$x86(r3, 0xffffffffffffffff, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x0, 0x0, 0x0) ioctl$KVM_TPR_ACCESS_REPORTING(r2, 0xc028ae92, &(0x7f0000000200)={0x21a, 0x5}) syz_kvm_setup_cpu$x86(0xffffffffffffffff, r5, &(0x7f0000000000/0x18000)=nil, &(0x7f00000001c0)=[@text64={0x40, &(0x7f0000000040)="b9800000c00f3235001000000f30f24c0f2c49e8426dc4027d3493b80800003626660f7e676d660f1678b06cc403f9dfbeb70000000bc7442400f5000000c744240284d178bcff1c24f2f347dbe1", 0x4e}], 0x1, 0x48, 0x0, 0x0) pipe2(&(0x7f0000000000), 0x0) ioctl$KVM_RUN(r5, 0xae80, 0x0) [ 1164.890452] gfs2: fsid=_: Trying to join cluster "lock_nolock", "_" [ 1164.943130] gfs2: fsid=_: Now mounting FS... 03:48:24 executing program 5: r0 = socket$inet6(0xa, 0x2, 0x0) connect$inet6(r0, &(0x7f0000000180)={0xa, 0xa000000, 0x0, @local, 0x4}, 0x1c) [ 1164.975730] gfs2: not a GFS2 filesystem [ 1165.006676] gfs2: fsid=_: can't read superblock [ 1165.011441] gfs2: fsid=_: can't read superblock: -22 [ 1165.023254] sysfs: cannot create duplicate filename '/fs/gfs2/_' [ 1165.089671] CPU: 0 PID: 23725 Comm: syz-executor3 Not tainted 4.20.0-next-20190103 #4 [ 1165.097661] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 1165.107024] Call Trace: [ 1165.109618] dump_stack+0x1db/0x2d0 [ 1165.113254] ? dump_stack_print_info.cold+0x20/0x20 [ 1165.118289] ? _raw_spin_unlock_irqrestore+0xa4/0xe0 [ 1165.123427] sysfs_warn_dup.cold+0x1c/0x31 [ 1165.127668] sysfs_create_dir_ns+0x2ce/0x330 [ 1165.132096] ? sysfs_create_mount_point+0xa0/0xa0 [ 1165.136959] ? do_raw_spin_trylock+0x270/0x270 [ 1165.141555] kobject_add_internal.cold+0x129/0x6d8 [ 1165.146517] ? kobj_ns_type_registered+0x60/0x60 [ 1165.151304] ? kfree_const+0x59/0x70 [ 1165.155032] ? rcu_read_lock_sched_held+0x110/0x130 [ 1165.160100] ? kfree+0x1fa/0x230 [ 1165.160130] ? kfree_const+0x5e/0x70 [ 1165.160161] kobject_init_and_add+0x101/0x160 [ 1165.160176] ? kobject_add_internal+0x4b0/0x4b0 [ 1165.171725] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 1165.171739] ? vsnprintf+0x368/0x1b10 [ 1165.171763] gfs2_sys_fs_add+0x210/0x500 [ 1165.185723] ? recover_store+0x1a0/0x1a0 [ 1165.185742] ? snprintf+0xbb/0xf0 [ 1165.185755] ? vsprintf+0x30/0x40 [ 1165.185772] ? set_blocksize+0x2bf/0x340 [ 1165.185789] ? memcpy+0x46/0x50 [ 1165.197320] fill_super+0x894/0x1990 [ 1165.197363] ? gfs2_online_uevent+0x2d0/0x2d0 [ 1165.204852] ? snprintf+0xbb/0xf0 [ 1165.204865] ? vsprintf+0x40/0x40 [ 1165.204885] ? ns_capable_common+0x141/0x170 [ 1165.204897] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 1165.204910] ? set_blocksize+0x2bf/0x340 [ 1165.211893] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 1165.211911] gfs2_mount+0x5db/0x6ee [ 1165.211942] ? fill_super+0x1990/0x1990 [ 1165.219886] ? vfs_parse_fs_string+0x1c5/0x2b0 [ 1165.219903] ? vfs_parse_fs_param+0x4b0/0x4b0 [ 1165.258922] ? fill_super+0x1990/0x1990 [ 1165.262893] legacy_get_tree+0xf2/0x200 [ 1165.266869] vfs_get_tree+0x123/0x450 [ 1165.270672] do_mount+0x1622/0x2fa0 [ 1165.274311] ? copy_mount_string+0x40/0x40 [ 1165.278565] ? kmem_cache_alloc_trace+0x354/0x760 [ 1165.283410] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 1165.288963] ? copy_mount_options+0x30e/0x440 [ 1165.293469] ksys_mount+0xdb/0x150 [ 1165.297010] __x64_sys_mount+0xbe/0x150 [ 1165.300986] do_syscall_64+0x1a3/0x800 [ 1165.304873] ? syscall_return_slowpath+0x5f0/0x5f0 [ 1165.309801] ? prepare_exit_to_usermode+0x232/0x3b0 [ 1165.314867] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 1165.319741] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 1165.324922] RIP: 0033:0x45a93a [ 1165.328107] Code: b8 a6 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 ed 8c fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 0f 83 ca 8c fb ff c3 66 0f 1f 84 00 00 00 00 00 [ 1165.346995] RSP: 002b:00007fdbfe5d2a88 EFLAGS: 00000206 ORIG_RAX: 00000000000000a5 [ 1165.354706] RAX: ffffffffffffffda RBX: 00007fdbfe5d2b30 RCX: 000000000045a93a [ 1165.361968] RDX: 00007fdbfe5d2ad0 RSI: 0000000020000200 RDI: 00007fdbfe5d2af0 [ 1165.369227] RBP: 0000000020000200 R08: 00007fdbfe5d2b30 R09: 00007fdbfe5d2ad0 [ 1165.376512] R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000003 [ 1165.383780] R13: 0000000000000000 R14: 00000000004db380 R15: 00000000ffffffff 03:48:25 executing program 2: r0 = socket$inet(0x2, 0x4000000000000001, 0x0) setsockopt$inet_tcp_int(r0, 0x6, 0x80000000000002, &(0x7f0000000040)=0x74, 0x4) bind$inet(r0, &(0x7f0000000180)={0x2, 0x4e23, @multicast1}, 0x10) sendto$inet(r0, 0x0, 0x0, 0x200007fd, &(0x7f0000e68000)={0x2, 0x4e23, @local}, 0x10) write$binfmt_elf64(r0, &(0x7f00000012c0)=ANY=[@ANYBLOB="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"], 0x209) mmap(&(0x7f0000000000/0xb36000)=nil, 0xb36000, 0x3, 0x8031, 0xffffffffffffffff, 0x0) sendmmsg$inet_sctp(r0, &(0x7f0000002600)=[{0x0, 0x6800, &(0x7f0000000240)=[{&(0x7f0000000380)="d4", 0x1}], 0x1}], 0x1, 0x0) [ 1165.437162] kobject_add_internal failed for _ with -EEXIST, don't try to register things with the same name in the same directory. [ 1165.449756] gfs2: fsid=_: error -17 adding sysfs files 03:48:25 executing program 3: syz_mount_image$gfs2(&(0x7f0000000140)='gfs2\x00', &(0x7f0000000200)='./file0\x00', 0x1a000000, 0x0, 0x0, 0x0, &(0x7f00000003c0)={[{@locktable={'locktable', 0x3d, '/'}}, {@lockproto_nolock='lockproto=lock_nolock'}]}) 03:48:25 executing program 1: r0 = syz_open_dev$vcsn(&(0x7f0000000240)='/dev/vcs#\x00', 0x3, 0x0) r1 = syz_open_dev$usbmon(&(0x7f0000000280)='/dev/usbmon#\x00', 0x200, 0x2240) ioctl$VHOST_SET_LOG_FD(r0, 0x4004af07, &(0x7f00000002c0)=r1) r2 = openat$kvm(0xffffffffffffff9c, &(0x7f0000000140)='/dev/kvm\x00', 0x0, 0x0) pipe(&(0x7f0000000000)={0xffffffffffffffff, 0xffffffffffffffff}) write$RDMA_USER_CM_CMD_JOIN_IP_MCAST(0xffffffffffffff9c, &(0x7f0000000100)={0x10, 0x30, 0xfa00, {&(0x7f0000000080)={0xffffffffffffffff}, 0x2, {0xa, 0x4e21, 0x401, @initdev={0xfe, 0x88, [], 0x0, 0x0}, 0x2}}}, 0x38) write$RDMA_USER_CM_CMD_LEAVE_MCAST(r4, &(0x7f0000000200)={0x11, 0x10, 0xfa00, {&(0x7f0000000040), r5}}, 0x18) r6 = ioctl$KVM_CREATE_VM(r2, 0xae01, 0x0) r7 = ioctl$KVM_CREATE_VCPU(r6, 0xae41, 0x0) ioctl$DRM_IOCTL_RM_MAP(r3, 0x4028641b, &(0x7f0000000180)={0x0, 0x4, 0x3, 0x80, &(0x7f0000005000/0x4000)=nil, 0x7f}) ioctl$KVM_SET_USER_MEMORY_REGION(r6, 0x4020ae46, &(0x7f0000000400)={0x0, 0x3, 0x0, 0x2000, &(0x7f0000000000/0x2000)=nil}) syz_kvm_setup_cpu$x86(r6, r7, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x14, 0x0, 0x0) sendmmsg$unix(0xffffffffffffffff, &(0x7f0000002780)=[{0x0, 0x0, &(0x7f0000001d00)=[{&(0x7f0000000bc0)="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", 0x3c5}], 0x1}], 0x1, 0x0) ioctl$KVM_REGISTER_COALESCED_MMIO(r6, 0x4010ae67, &(0x7f00000000c0)={0x0, 0x15200}) syz_kvm_setup_cpu$x86(0xffffffffffffffff, r7, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x8, 0x0, 0x0) ioctl$KVM_RUN(r7, 0xae80, 0x0) ioctl$KVM_SET_VCPU_EVENTS(r7, 0x4040aea0, &(0x7f00000001c0)={0x7, 0x4, 0x989, 0x0, 0x1, 0x400, 0xb5, 0xff, 0x401, 0x8, 0xb8, 0x7f, 0x0, 0x1000, 0x8, 0x7, 0x81, 0x0, 0x9}) 03:48:25 executing program 5: r0 = socket$inet6(0xa, 0x2, 0x0) connect$inet6(r0, &(0x7f0000000180)={0xa, 0x100000, 0x0, @local, 0x4}, 0x1c) 03:48:25 executing program 4: syz_mount_image$gfs2(&(0x7f0000000140)='gfs2\x00', &(0x7f0000000200)='./file0\x00', 0x1500, 0x0, 0x0, 0x0, &(0x7f00000003c0)={[{@locktable={'locktable', 0x3d, '/'}}, {@lockproto_nolock='lockproto=lock_nolock'}]}) socketpair$unix(0x1, 0x1, 0x0, &(0x7f0000000180)) 03:48:25 executing program 5: r0 = socket$inet6(0xa, 0x2, 0x0) connect$inet6(r0, &(0x7f0000000180)={0xa, 0xfe800000, 0x0, @local, 0x4}, 0x1c) 03:48:25 executing program 0: socketpair$unix(0x1, 0x1, 0x0, &(0x7f0000000440)={0xffffffffffffffff, 0xffffffffffffffff}) ioctl$PERF_EVENT_IOC_ENABLE(r0, 0x8912, 0x400200) r1 = openat$kvm(0xffffffffffffff9c, &(0x7f00000000c0)='/dev/kvm\x00', 0x0, 0x0) openat$dlm_monitor(0xffffffffffffff9c, &(0x7f0000000100)='/dev/dlm-monitor\x00', 0x83, 0x0) r2 = ioctl$KVM_CREATE_VM(r1, 0xae01, 0x0) r3 = ioctl$KVM_CREATE_VCPU(r2, 0xae41, 0x0) syz_kvm_setup_cpu$x86(r2, 0xffffffffffffffff, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x0, 0x0, 0x0) syz_kvm_setup_cpu$x86(0xffffffffffffffff, r3, &(0x7f0000000000/0x18000)=nil, &(0x7f00000001c0)=[@text64={0x40, &(0x7f0000000040)="b9800000c00f3235001000000f30f24c0f2c49e8426dc4027d3493b80800003626660f7e676d660f1678b06cc403f9dfbeb70000000bc7442400f5000000c744240284d178bcff1c24f2f347dbe1", 0x4e}], 0x1, 0x48, 0x0, 0x0) pipe2(&(0x7f0000000000), 0x0) ioctl$KVM_RUN(r3, 0xae80, 0x0) [ 1165.710744] gfs2: fsid=_: Trying to join cluster "lock_nolock", "_" [ 1165.737822] gfs2: fsid=_: Now mounting FS... [ 1165.743336] sysfs: cannot create duplicate filename '/fs/gfs2/_' [ 1165.749519] CPU: 1 PID: 23785 Comm: syz-executor3 Not tainted 4.20.0-next-20190103 #4 [ 1165.757030] attempt to access beyond end of device [ 1165.757530] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 1165.771811] Call Trace: [ 1165.774417] dump_stack+0x1db/0x2d0 [ 1165.777287] loop4: rw=4096, want=136, limit=10 [ 1165.778078] ? dump_stack_print_info.cold+0x20/0x20 [ 1165.787656] ? _raw_spin_unlock_irqrestore+0xa4/0xe0 [ 1165.792777] sysfs_warn_dup.cold+0x1c/0x31 [ 1165.797023] sysfs_create_dir_ns+0x2ce/0x330 [ 1165.801456] ? sysfs_create_mount_point+0xa0/0xa0 [ 1165.806187] gfs2: error 10 reading superblock [ 1165.806314] ? do_raw_spin_trylock+0x270/0x270 [ 1165.815444] kobject_add_internal.cold+0x129/0x6d8 [ 1165.820395] ? kobj_ns_type_registered+0x60/0x60 [ 1165.825161] ? kfree_const+0x59/0x70 [ 1165.828884] ? rcu_read_lock_sched_held+0x110/0x130 [ 1165.833908] ? kfree+0x1fa/0x230 [ 1165.837117] gfs2: fsid=_: can't read superblock [ 1165.837315] ? kfree_const+0x5e/0x70 [ 1165.845702] kobject_init_and_add+0x101/0x160 [ 1165.850209] ? kobject_add_internal+0x4b0/0x4b0 [ 1165.852281] gfs2: fsid=_: can't read superblock: -5 [ 1165.854885] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 1165.854899] ? vsnprintf+0x368/0x1b10 [ 1165.854925] gfs2_sys_fs_add+0x210/0x500 [ 1165.854939] ? recover_store+0x1a0/0x1a0 [ 1165.854957] ? snprintf+0xbb/0xf0 [ 1165.854981] ? vsprintf+0x30/0x40 [ 1165.854998] ? set_blocksize+0x2bf/0x340 [ 1165.855017] ? memcpy+0x46/0x50 [ 1165.855036] fill_super+0x894/0x1990 [ 1165.855072] ? gfs2_online_uevent+0x2d0/0x2d0 [ 1165.855093] ? snprintf+0xbb/0xf0 [ 1165.899953] ? vsprintf+0x40/0x40 [ 1165.899975] ? ns_capable_common+0x141/0x170 [ 1165.899991] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 1165.916299] ? set_blocksize+0x2bf/0x340 [ 1165.920368] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 1165.920386] gfs2_mount+0x5db/0x6ee [ 1165.920403] ? fill_super+0x1990/0x1990 [ 1165.920441] ? vfs_parse_fs_string+0x1c5/0x2b0 [ 1165.938113] ? vfs_parse_fs_param+0x4b0/0x4b0 [ 1165.942622] ? fill_super+0x1990/0x1990 [ 1165.946599] legacy_get_tree+0xf2/0x200 [ 1165.950604] vfs_get_tree+0x123/0x450 [ 1165.954464] do_mount+0x1622/0x2fa0 [ 1165.958116] ? copy_mount_string+0x40/0x40 [ 1165.962363] ? kmem_cache_alloc_trace+0x354/0x760 [ 1165.967217] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 1165.972761] ? _copy_from_user+0xdd/0x150 [ 1165.976924] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 1165.982489] ? copy_mount_options+0x30e/0x440 [ 1165.987010] ksys_mount+0xdb/0x150 [ 1165.990573] __x64_sys_mount+0xbe/0x150 [ 1165.994567] do_syscall_64+0x1a3/0x800 [ 1165.998461] ? syscall_return_slowpath+0x5f0/0x5f0 [ 1166.003401] ? prepare_exit_to_usermode+0x232/0x3b0 [ 1166.008426] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 1166.008452] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 1166.008463] RIP: 0033:0x45a93a [ 1166.008479] Code: b8 a6 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 ed 8c fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 0f 83 ca 8c fb ff c3 66 0f 1f 84 00 00 00 00 00 [ 1166.008499] RSP: 002b:00007fdbfe5d2a88 EFLAGS: 00000206 ORIG_RAX: 00000000000000a5 [ 1166.008513] RAX: ffffffffffffffda RBX: 00007fdbfe5d2b30 RCX: 000000000045a93a [ 1166.008523] RDX: 00007fdbfe5d2ad0 RSI: 0000000020000200 RDI: 00007fdbfe5d2af0 [ 1166.008531] RBP: 0000000020000200 R08: 00007fdbfe5d2b30 R09: 00007fdbfe5d2ad0 [ 1166.008542] R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000003 [ 1166.077383] R13: 0000000000000000 R14: 00000000004db380 R15: 00000000ffffffff 03:48:25 executing program 5: r0 = socket$inet6(0xa, 0x2, 0x0) connect$inet6(r0, &(0x7f0000000180)={0xa, 0x500, 0x0, @local, 0x4}, 0x1c) [ 1166.136188] kobject_add_internal failed for _ with -EEXIST, don't try to register things with the same name in the same directory. [ 1166.175355] BUG: unable to handle kernel paging request at ffff888090d52000 [ 1166.182474] #PF error: [PROT] [WRITE] [RSVD] [ 1166.185392] kobject: 'loop5' (000000005e1043d7): kobject_uevent_env [ 1166.186891] PGD c201067 P4D c201067 PUD 21ffff067 PMD 8000000090c001e3 [ 1166.186952] Oops: 000b [#1] PREEMPT SMP KASAN [ 1166.186971] CPU: 1 PID: 23795 Comm: syz-executor1 Not tainted 4.20.0-next-20190103 #4 [ 1166.212575] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 1166.214161] kobject: 'loop5' (000000005e1043d7): fill_kobj_path: path = '/devices/virtual/block/loop5' [ 1166.221953] RIP: 0010:mmu_page_zap_pte+0x2b8/0x3b0 [ 1166.221981] Code: 00 00 00 00 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 80 3c 02 00 0f 85 d1 00 00 00 48 b8 00 00 00 00 00 fc ff df 48 c1 eb 03 <49> c7 04 24 00 00 00 00 c6 04 03 f8 b8 01 00 00 00 e9 2d fe ff ff [ 1166.221988] RSP: 0018:ffff888057277518 EFLAGS: 00010a06 [ 1166.222000] RAX: dffffc0000000000 RBX: 1ffff1100ae4eea9 RCX: ffffc900083cc000 [ 1166.222012] RDX: 1ffff110121aa400 RSI: ffffffff81114184 RDI: 0000000000000007 [ 1166.275159] RBP: ffff8880572775d0 R08: ffff8880a096e540 R09: ffffed1015ce5b90 [ 1166.275445] gfs2: fsid=_: error -17 adding sysfs files [ 1166.282418] R10: ffffed1015ce5b8f R11: ffff8880ae72dc7b R12: ffff888090d52000 [ 1166.282427] R13: 1ffff1100ae4eea5 R14: 0000000000000000 R15: ffff8880572775a8 [ 1166.282438] FS: 00007f48e6ed6700(0000) GS:ffff8880ae700000(0000) knlGS:0000000000000000 [ 1166.282447] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 1166.282455] CR2: ffff888090d52000 CR3: 000000009e5de000 CR4: 00000000001426e0 [ 1166.282463] Call Trace: [ 1166.326195] ? drop_spte+0x220/0x220 [ 1166.329909] ? __lock_is_held+0xb6/0x140 03:48:26 executing program 5: r0 = socket$inet6(0xa, 0x2, 0x0) connect$inet6(r0, &(0x7f0000000180)={0xa, 0x700, 0x0, @local, 0x4}, 0x1c) [ 1166.333979] kvm_mmu_prepare_zap_page+0x19d/0x1440 [ 1166.338905] ? debug_check_no_obj_freed+0x2f2/0x5a7 [ 1166.343930] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 1166.349476] ? check_preemption_disabled+0x48/0x290 [ 1166.354542] ? kvm_handle_hva_range+0x730/0x730 [ 1166.359208] ? kvm_make_vcpus_request_mask+0x481/0x5a0 [ 1166.364487] ? gfn_to_pfn_atomic+0x6c0/0x6c0 [ 1166.368908] ? add_lock_to_list.isra.0+0x450/0x450 [ 1166.373853] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 1166.379389] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 03:48:26 executing program 2: r0 = socket$inet(0x2, 0x4000000000000001, 0x0) setsockopt$inet_tcp_int(r0, 0x6, 0x80000000000002, &(0x7f0000000040)=0x74, 0x4) bind$inet(r0, &(0x7f0000000180)={0x2, 0x4e23, @multicast1}, 0x10) sendto$inet(r0, 0x0, 0x0, 0x200007fd, &(0x7f0000e68000)={0x2, 0x4e23, @local}, 0x10) write$binfmt_elf64(r0, &(0x7f00000012c0)=ANY=[@ANYBLOB="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"], 0x209) mmap(&(0x7f0000000000/0xb36000)=nil, 0xb36000, 0x3, 0x8031, 0xffffffffffffffff, 0x0) sendmmsg$inet_sctp(r0, &(0x7f0000002600)=[{0x0, 0xf401, &(0x7f0000000240)=[{&(0x7f0000000380)="d4", 0x1}], 0x1}], 0x1, 0x0) [ 1166.384942] ? check_preemption_disabled+0x48/0x290 [ 1166.389976] ? kvm_make_all_cpus_request+0x9d/0xe0 [ 1166.394906] ? kvm_make_vcpus_request_mask+0x5a0/0x5a0 [ 1166.400271] kvm_mmu_invalidate_zap_all_pages+0x53e/0x710 [ 1166.405799] ? kvm_mmu_zap_collapsible_sptes+0x830/0x830 [ 1166.411230] ? lock_release+0xc40/0xc40 [ 1166.415199] ? rcu_sync_dtor+0x170/0x170 [ 1166.419259] kvm_arch_flush_shadow_all+0x16/0x20 [ 1166.424016] kvm_mmu_notifier_release+0x5c/0x90 [ 1166.428680] ? kvm_vcpu_on_spin+0x800/0x800 [ 1166.432992] mmu_notifier_unregister+0x1dd/0x5e0 [ 1166.437755] ? kvm_vcpu_on_spin+0x800/0x800 [ 1166.442089] ? __mmu_notifier_register+0x30/0x30 [ 1166.446854] ? free_pages+0x46/0x50 [ 1166.450463] kvm_put_kvm+0x6aa/0xff0 [ 1166.454161] ? kvm_write_guest_cached+0x40/0x40 [ 1166.458863] ? ima_file_free+0x128/0x630 [ 1166.462987] ? debugfs_remove+0x130/0x130 [ 1166.467135] kvm_vcpu_release+0x7b/0xa0 [ 1166.471094] __fput+0x3c5/0xb10 [ 1166.474391] ? kvm_vm_release+0x60/0x60 [ 1166.478350] ? file_free_rcu+0xe0/0xe0 [ 1166.482487] ? task_work_run+0x1bb/0x2b0 [ 1166.486530] ? trace_hardirqs_off_caller+0x300/0x300 [ 1166.491647] ? do_raw_spin_trylock+0x270/0x270 [ 1166.496218] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 1166.501779] ____fput+0x16/0x20 [ 1166.505076] task_work_run+0x1f4/0x2b0 [ 1166.508958] ? task_work_cancel+0x2c0/0x2c0 [ 1166.513261] ? cpumask_weight.constprop.0+0x3f/0x3f [ 1166.518272] ? do_syscall_64+0x8c/0x800 [ 1166.522231] exit_to_usermode_loop+0x32a/0x3b0 [ 1166.526978] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 1166.532337] ? syscall_trace_enter+0x12a0/0x12a0 [ 1166.537098] ? ksys_ioctl+0x82/0xd0 [ 1166.540719] do_syscall_64+0x696/0x800 [ 1166.544596] ? syscall_return_slowpath+0x5f0/0x5f0 [ 1166.549542] ? prepare_exit_to_usermode+0x3b0/0x3b0 [ 1166.554545] ? __switch_to_asm+0x34/0x70 [ 1166.558586] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 1166.563446] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 1166.568631] RIP: 0033:0x457ec9 [ 1166.571802] Code: 6d b7 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 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 3b b7 fb ff c3 66 2e 0f 1f 84 00 00 00 00 [ 1166.590785] RSP: 002b:00007f48e6ed5c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 1166.598480] RAX: 0000000000000000 RBX: 0000000000000003 RCX: 0000000000457ec9 [ 1166.605740] RDX: 00000000200001c0 RSI: 000000004040aea0 RDI: 0000000000000009 [ 1166.612990] RBP: 000000000073c0e0 R08: 0000000000000000 R09: 0000000000000000 [ 1166.620236] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f48e6ed66d4 [ 1166.627481] R13: 00000000004c10c8 R14: 00000000004d2a40 R15: 00000000ffffffff [ 1166.634732] Modules linked in: [ 1166.637907] CR2: ffff888090d52000 [ 1166.641340] ---[ end trace da028fd6da0daeec ]--- [ 1166.646084] RIP: 0010:mmu_page_zap_pte+0x2b8/0x3b0 [ 1166.650993] Code: 00 00 00 00 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 80 3c 02 00 0f 85 d1 00 00 00 48 b8 00 00 00 00 00 fc ff df 48 c1 eb 03 <49> c7 04 24 00 00 00 00 c6 04 03 f8 b8 01 00 00 00 e9 2d fe ff ff [ 1166.669869] RSP: 0018:ffff888057277518 EFLAGS: 00010a06 [ 1166.675221] RAX: dffffc0000000000 RBX: 1ffff1100ae4eea9 RCX: ffffc900083cc000 [ 1166.682480] RDX: 1ffff110121aa400 RSI: ffffffff81114184 RDI: 0000000000000007 [ 1166.689742] RBP: ffff8880572775d0 R08: ffff8880a096e540 R09: ffffed1015ce5b90 [ 1166.696996] R10: ffffed1015ce5b8f R11: ffff8880ae72dc7b R12: ffff888090d52000 [ 1166.704264] R13: 1ffff1100ae4eea5 R14: 0000000000000000 R15: ffff8880572775a8 [ 1166.711527] FS: 00007f48e6ed6700(0000) GS:ffff8880ae700000(0000) knlGS:0000000000000000 [ 1166.719751] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 1166.725655] CR2: ffff888090d52000 CR3: 000000009e5de000 CR4: 00000000001426e0 [ 1166.732924] Kernel panic - not syncing: Fatal exception [ 1166.739232] Kernel Offset: disabled [ 1166.742854] Rebooting in 86400 seconds..