[ OK ] Reached target Graphical Interface. Starting Update UTMP about System Runlevel Changes... Starting Load/Save RF Kill Switch Status... [ OK ] Started Load/Save RF Kill Switch Status. [ OK ] Started Update UTMP about System Runlevel Changes. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.0.157' (ECDSA) to the list of known hosts. syzkaller login: [ 28.856110] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 28.883001] gfs2: fsid=syz:syz: Now mounting FS... [ 28.917144] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' [ 28.925486] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' [ 28.944590] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' [ 28.947895] gfs2: fsid=syz:syz.0: journal 0 mapped with 1 extents [ 28.955378] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' [ 28.968982] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' [ 28.976465] ------------[ cut here ]------------ [ 28.980277] ------------[ cut here ]------------ [ 28.981237] WARNING: CPU: 1 PID: 8004 at fs/sysfs/dir.c:30 sysfs_warn_dup.cold+0x17/0x26 [ 28.985988] WARNING: CPU: 0 PID: 8012 at fs/sysfs/dir.c:30 sysfs_warn_dup.cold+0x17/0x26 [ 28.994186] Kernel panic - not syncing: panic_on_warn set ... [ 28.994186] [ 29.002387] Modules linked in: [ 29.009721] CPU: 1 PID: 8004 Comm: syz-executor108 Not tainted 4.14.300-syzkaller #0 [ 29.009729] CPU: 0 PID: 8012 Comm: syz-executor108 Not tainted 4.14.300-syzkaller #0 [ 29.012894] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 [ 29.020866] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 [ 29.028720] Call Trace: [ 29.038046] task: ffff8880b2d00000 task.stack: ffff8880b3ac0000 [ 29.038057] RIP: 0010:sysfs_warn_dup.cold+0x17/0x26 [ 29.047388] dump_stack+0x1b2/0x281 [ 29.049936] RSP: 0018:ffff8880b3ac7728 EFLAGS: 00010282 [ 29.055976] panic+0x1f9/0x42d [ 29.060967] RAX: 000000000000003a RBX: ffff888096ab9d90 RCX: 0000000000000000 [ 29.064568] ? add_taint.cold+0x16/0x16 [ 29.069905] RDX: 0000000000000000 RSI: ffffffff878bd060 RDI: ffffed1016758edb [ 29.073076] ? sysfs_warn_dup.cold+0x17/0x26 [ 29.080321] RBP: ffff8880966eaa80 R08: 000000000000003a R09: 0000000000000000 [ 29.084270] ? sysfs_warn_dup.cold+0x17/0x26 [ 29.091514] R10: 0000000000000000 R11: 0000000000000000 R12: ffff88823881ea80 [ 29.095921] __warn.cold+0x20/0x44 [ 29.103173] R13: ffff8880b2faecc0 R14: ffff888096ab9d98 R15: ffff8880b179dd58 [ 29.107576] ? ist_end_non_atomic+0x10/0x10 [ 29.114816] FS: 0000555556ae5300(0000) GS:ffff8880ba400000(0000) knlGS:0000000000000000 [ 29.118338] ? sysfs_warn_dup.cold+0x17/0x26 [ 29.125594] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 29.129903] report_bug+0x208/0x250 [ 29.138100] CR2: 0000564009622000 CR3: 000000009defc000 CR4: 00000000003406f0 [ 29.142490] do_error_trap+0x195/0x2d0 [ 29.148344] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 29.151945] ? math_error+0x2d0/0x2d0 [ 29.159184] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 29.159189] Call Trace: [ 29.163064] ? ___preempt_schedule+0x16/0x18 [ 29.170310] sysfs_create_dir_ns+0x16f/0x1d0 [ 29.174171] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 29.181422] kobject_add_internal+0x28b/0x930 [ 29.184004] invalid_op+0x1b/0x40 [ 29.188389] kobject_init_and_add+0xde/0x120 [ 29.192862] ? sysfs_warn_dup.cold+0x17/0x26 [ 29.197671] ? kobject_create_and_add+0x200/0x200 [ 29.202135] ? sysfs_warn_dup.cold+0x17/0x26 [ 29.205564] ? vsnprintf+0x260/0x1340 [ 29.209947] ? sysfs_create_dir_ns+0x16f/0x1d0 [ 29.214425] gfs2_sys_fs_add+0x184/0x3f0 [ 29.219241] ? kobject_add_internal+0x28b/0x930 [ 29.223619] ? recover_store+0x100/0x100 [ 29.227398] ? kobject_init_and_add+0xde/0x120 [ 29.232037] ? snprintf+0xa5/0xd0 [ 29.236070] ? kobject_create_and_add+0x200/0x200 [ 29.240713] ? strscpy+0x94/0x280 [ 29.244744] ? vsnprintf+0x260/0x1340 [ 29.249307] fill_super+0x118b/0x2310 [ 29.252736] ? gfs2_sys_fs_add+0x184/0x3f0 [ 29.257553] ? vsnprintf+0x260/0x1340 [ 29.261093] ? recover_store+0x100/0x100 [ 29.264877] ? gfs2_online_uevent+0x1b0/0x1b0 [ 29.268660] ? snprintf+0xa5/0xd0 [ 29.272954] ? pointer+0x9e0/0x9e0 [ 29.276732] ? strscpy+0x94/0x280 [ 29.280769] ? snprintf+0xa5/0xd0 [ 29.285243] ? fill_super+0x118b/0x2310 [ 29.288669] ? vsprintf+0x30/0x30 [ 29.292182] ? vsnprintf+0x260/0x1340 [ 29.295606] ? gfs2_open+0x160/0x160 [ 29.299035] ? gfs2_online_uevent+0x1b0/0x1b0 [ 29.302983] ? set_blocksize+0x125/0x380 [ 29.306409] ? pointer+0x9e0/0x9e0 [ 29.310210] gfs2_mount+0x439/0x510 [ 29.313904] ? snprintf+0xa5/0xd0 [ 29.318398] ? fill_super+0x2310/0x2310 [ 29.322446] ? vsprintf+0x30/0x30 [ 29.325980] ? alloc_pages_current+0x15d/0x260 [ 29.329575] ? gfs2_open+0x160/0x160 [ 29.333006] ? __lockdep_init_map+0x100/0x560 [ 29.336962] ? set_blocksize+0x125/0x380 [ 29.340387] mount_fs+0x92/0x2a0 [ 29.344946] ? gfs2_mount+0x439/0x510 [ 29.348636] vfs_kern_mount.part.0+0x5b/0x470 [ 29.353103] ? fill_super+0x2310/0x2310 [ 29.357139] do_mount+0xe65/0x2a30 [ 29.360494] ? alloc_pages_current+0x15d/0x260 [ 29.364261] ? retint_kernel+0x2d/0x2d [ 29.368726] ? __lockdep_init_map+0x100/0x560 [ 29.372675] ? copy_mount_string+0x40/0x40 [ 29.376188] ? mount_fs+0x92/0x2a0 [ 29.380755] ? memset+0x20/0x40 [ 29.384619] ? vfs_kern_mount.part.0+0x5b/0x470 [ 29.389088] ? copy_mount_options+0x1fa/0x2f0 [ 29.393301] ? do_mount+0xe65/0x2a30 [ 29.396823] ? copy_mnt_ns+0xa30/0xa30 [ 29.400078] ? retint_kernel+0x2d/0x2d [ 29.404720] SyS_mount+0xa8/0x120 [ 29.409218] ? copy_mount_string+0x40/0x40 [ 29.412909] ? copy_mnt_ns+0xa30/0xa30 [ 29.416769] ? memset+0x20/0x40 [ 29.420656] do_syscall_64+0x1d5/0x640 [ 29.424088] ? copy_mount_options+0x1fa/0x2f0 [ 29.428304] entry_SYSCALL_64_after_hwframe+0x5e/0xd3 [ 29.432162] ? copy_mnt_ns+0xa30/0xa30 [ 29.435438] Code: [ 29.439474] ? SyS_mount+0xa8/0x120 [ 29.443940] bd [ 29.449117] ? copy_mnt_ns+0xa30/0xa30 [ 29.452975] ea [ 29.455106] ? do_syscall_64+0x1d5/0x640 [ 29.458787] ff [ 29.460660] ? entry_SYSCALL_64_after_hwframe+0x5e/0xd3 [ 29.464510] ff ff e9 69 d3 9f fa 4c 89 ff e8 be ed 7a fa eb da e8 f7 2f 51 fa 4c 89 ea 48 89 ee 48 c7 c7 c0 c4 95 87 e8 04 fc fe ff <0f> 0b 48 89 ef 5d 41 5c 41 5d e9 96 c3 7a fa e8 d1 2f 51 fa 4d [ 29.495568] ---[ end trace 367c679120fa7d3c ]--- [ 29.500484] Kernel Offset: disabled [ 29.504135] Rebooting in 86400 seconds..