[ OK ] Reached target Graphical Interface. Starting Update UTMP about System Runlevel Changes... [ OK ] Started Update UTMP about System Runlevel Changes. Starting Load/Save RF Kill Switch Status... [ OK ] Started Load/Save RF Kill Switch Status. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.15.200' (ECDSA) to the list of known hosts. executing program executing program executing program executing program executing program executing program syzkaller login: [ 28.690124] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 28.715042] gfs2: fsid=syz:syz: Now mounting FS... [ 28.723305] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' [ 28.740710] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' [ 28.749349] ------------[ cut here ]------------ [ 28.754121] WARNING: CPU: 0 PID: 7966 at fs/sysfs/dir.c:30 sysfs_warn_dup.cold+0x17/0x26 [ 28.762341] Kernel panic - not syncing: panic_on_warn set ... [ 28.762341] [ 28.769694] CPU: 0 PID: 7966 Comm: syz-executor911 Not tainted 4.14.302-syzkaller #0 [ 28.777561] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 [ 28.786901] Call Trace: [ 28.789482] dump_stack+0x1b2/0x281 [ 28.793103] panic+0x1f9/0x42d [ 28.796287] ? add_taint.cold+0x16/0x16 [ 28.800256] ? sysfs_warn_dup.cold+0x17/0x26 [ 28.804663] ? sysfs_warn_dup.cold+0x17/0x26 [ 28.806038] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' [ 28.809060] __warn.cold+0x20/0x44 [ 28.809071] ? ist_end_non_atomic+0x10/0x10 [ 28.809079] ? sysfs_warn_dup.cold+0x17/0x26 [ 28.809088] report_bug+0x208/0x250 [ 28.831575] do_error_trap+0x195/0x2d0 [ 28.835458] ? math_error+0x2d0/0x2d0 [ 28.835930] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' [ 28.839247] ? ___preempt_schedule+0x16/0x18 [ 28.839260] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 28.839272] invalid_op+0x1b/0x40 [ 28.839284] RIP: 0010:sysfs_warn_dup.cold+0x17/0x26 [ 28.858572] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' [ 28.863542] RSP: 0018:ffff88809ce57728 EFLAGS: 00010282 [ 28.863550] RAX: 000000000000003a RBX: ffff8880958bdc10 RCX: 0000000000000000 [ 28.863555] RDX: 0000000000000000 RSI: ffffffff878bd020 RDI: ffffed10139caedb [ 28.863560] RBP: ffff888095b0c300 R08: 000000000000003a R09: 0000000000000000 [ 28.863564] R10: 0000000000000000 R11: 0000000000000000 R12: ffff888238807c40 [ 28.863569] R13: ffff8880b07d4a40 R14: ffff8880958bdc18 R15: ffff8880b287dbd8 [ 28.863588] ? sysfs_warn_dup.cold+0x17/0x26 [ 28.863598] sysfs_create_dir_ns+0x16f/0x1d0 [ 28.870374] ------------[ cut here ]------------ [ 28.875585] kobject_add_internal+0x28b/0x930 [ 28.882840] WARNING: CPU: 1 PID: 7965 at fs/sysfs/dir.c:30 sysfs_warn_dup.cold+0x17/0x26 [ 28.890095] kobject_init_and_add+0xde/0x120 [ 28.897342] Modules linked in: [ 28.904608] ? kobject_create_and_add+0x200/0x200 [ 28.916234] ? vsnprintf+0x260/0x1340 [ 28.920615] CPU: 1 PID: 7965 Comm: syz-executor911 Not tainted 4.14.302-syzkaller #0 [ 28.925349] gfs2_sys_fs_add+0x184/0x3f0 [ 28.929808] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 [ 28.929815] task: ffff8880a39ac640 task.stack: ffff8880a2ec8000 [ 28.938018] ? recover_store+0x100/0x100 [ 28.942400] RIP: 0010:sysfs_warn_dup.cold+0x17/0x26 [ 28.945563] ? snprintf+0xa5/0xd0 [ 28.950373] RSP: 0018:ffff8880a2ecf728 EFLAGS: 00010282 [ 28.954150] ? strscpy+0x94/0x280 [ 28.966033] fill_super+0x118b/0x2310 [ 28.975360] RAX: 000000000000003a RBX: ffff8880957b1d10 RCX: 0000000000000000 [ 28.981391] ? vsnprintf+0x260/0x1340 [ 28.985416] RDX: 0000000000000000 RSI: ffffffff878bd020 RDI: ffffed10145d9edb [ 28.990409] ? gfs2_online_uevent+0x1b0/0x1b0 [ 28.993829] RBP: ffff8880b1b2cbc0 R08: 000000000000003a R09: 0000000000000001 [ 28.999165] ? pointer+0x9e0/0x9e0 [ 29.002586] R10: 0000000000000000 R11: 0000000000000000 R12: ffff888238807c40 [ 29.006360] ? snprintf+0xa5/0xd0 [ 29.013599] R13: ffff8880b0aac9c0 R14: ffff8880957b1d18 R15: ffff8880b3425cd8 [ 29.017373] ? vsprintf+0x30/0x30 [ 29.024616] FS: 0000555555d15300(0000) GS:ffff8880ba500000(0000) knlGS:0000000000000000 [ 29.029081] ? gfs2_open+0x160/0x160 [ 29.036322] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 29.039836] ? set_blocksize+0x125/0x380 [ 29.047073] CR2: 00007f39ba9b0000 CR3: 00000000a0744000 CR4: 00000000003406e0 [ 29.050503] gfs2_mount+0x439/0x510 [ 29.057742] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 29.061166] ? fill_super+0x2310/0x2310 [ 29.069363] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 29.073065] ? alloc_pages_current+0x15d/0x260 [ 29.078905] Call Trace: [ 29.082942] ? __lockdep_init_map+0x100/0x560 [ 29.090188] sysfs_create_dir_ns+0x16f/0x1d0 [ 29.093786] mount_fs+0x92/0x2a0 [ 29.101032] kobject_add_internal+0x28b/0x930 [ 29.104978] vfs_kern_mount.part.0+0x5b/0x470 [ 29.112221] kobject_init_and_add+0xde/0x120 [ 29.116775] do_mount+0xe65/0x2a30 [ 29.119330] ? kobject_create_and_add+0x200/0x200 [ 29.123799] ? retint_kernel+0x2d/0x2d [ 29.128175] ? vsnprintf+0x260/0x1340 [ 29.131513] ? copy_mount_string+0x40/0x40 [ 29.135982] gfs2_sys_fs_add+0x184/0x3f0 [ 29.140444] ? memset+0x20/0x40 [ 29.144822] ? recover_store+0x100/0x100 [ 29.148332] ? copy_mount_options+0x1fa/0x2f0 [ 29.153147] ? snprintf+0xa5/0xd0 [ 29.157006] ? copy_mnt_ns+0xa30/0xa30 [ 29.160783] ? strscpy+0x94/0x280 [ 29.164995] SyS_mount+0xa8/0x120 [ 29.169028] fill_super+0x118b/0x2310 [ 29.172280] ? copy_mnt_ns+0xa30/0xa30 [ 29.176316] ? vsnprintf+0x260/0x1340 [ 29.180783] do_syscall_64+0x1d5/0x640 [ 29.184204] ? gfs2_online_uevent+0x1b0/0x1b0 [ 29.188066] entry_SYSCALL_64_after_hwframe+0x5e/0xd3 [ 29.191488] ? pointer+0x9e0/0x9e0 [ 29.194912] RIP: 0033:0x7f6156ec86fa [ 29.198685] ? snprintf+0xa5/0xd0 [ 29.202538] RSP: 002b:00007ffe349d9528 EFLAGS: 00000282 [ 29.206313] ? vsprintf+0x30/0x30 [ 29.210165] ORIG_RAX: 00000000000000a5 [ 29.210171] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f6156ec86fa [ 29.214642] ? gfs2_open+0x160/0x160 [ 29.219798] RDX: 00000000200124c0 RSI: 0000000020012500 RDI: 00007ffe349d9530 [ 29.223311] ? set_blocksize+0x125/0x380 [ 29.226994] RBP: 00007ffe349d9530 R08: 00007ffe349d9570 R09: 0000000000000002 [ 29.230428] gfs2_mount+0x439/0x510 [ 29.235755] R10: 000000000020400f R11: 0000000000000282 R12: 0000000000000004 [ 29.239201] ? fill_super+0x2310/0x2310 [ 29.243147] R13: 0000555555d152c0 R14: 00007ffe349d9570 R15: 0000000000000000 [ 29.294691] ? alloc_pages_current+0x15d/0x260 [ 29.299255] ? __lockdep_init_map+0x100/0x560 [ 29.303735] mount_fs+0x92/0x2a0 [ 29.307125] vfs_kern_mount.part.0+0x5b/0x470 [ 29.311605] do_mount+0xe65/0x2a30 [ 29.315131] ? retint_kernel+0x2d/0x2d [ 29.319001] ? copy_mount_string+0x40/0x40 [ 29.323226] ? memset+0x20/0x40 [ 29.326488] ? copy_mount_options+0x1fa/0x2f0 [ 29.330965] ? copy_mnt_ns+0xa30/0xa30 [ 29.334834] SyS_mount+0xa8/0x120 [ 29.338270] ? copy_mnt_ns+0xa30/0xa30 [ 29.342143] do_syscall_64+0x1d5/0x640 [ 29.346016] entry_SYSCALL_64_after_hwframe+0x5e/0xd3 [ 29.351187] RIP: 0033:0x7f6156ec86fa [ 29.354883] RSP: 002b:00007ffe349d9528 EFLAGS: 00000282 ORIG_RAX: 00000000000000a5 [ 29.362583] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f6156ec86fa [ 29.369836] RDX: 00000000200124c0 RSI: 0000000020012500 RDI: 00007ffe349d9530 [ 29.377087] RBP: 00007ffe349d9530 R08: 00007ffe349d9570 R09: 0000000000000002 [ 29.384338] R10: 000000000020400f R11: 0000000000000282 R12: 0000000000000004 [ 29.391591] R13: 0000555555d152c0 R14: 00007ffe349d9570 R15: 0000000000000000 [ 29.398851] Code: bd ea ff ff ff e9 8f c2 9f fa 4c 89 ff e8 74 de 7a fa eb da e8 6d 1d 51 fa 4c 89 ea 48 89 ee 48 c7 c7 80 c4 95 87 e8 e5 fb fe ff <0f> 0b 48 89 ef 5d 41 5c 41 5d e9 4c b4 7a fa e8 47 1d 51 fa 4d [ 29.418048] ---[ end trace ba469cd320fef93a ]--- [ 29.422945] Kernel Offset: disabled [ 29.426603] Rebooting in 86400 seconds..