[ 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 '10.128.0.156' (ECDSA) to the list of known hosts. executing program executing program executing program executing program executing program executing program syzkaller login: [ 35.192640] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 35.227624] gfs2: fsid=syz:syz: Now mounting FS... [ 35.276253] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' [ 35.301154] gfs2: fsid=syz:syz.0: journal 0 mapped with 1 extents [ 35.310063] ------------[ cut here ]------------ [ 35.314943] WARNING: CPU: 1 PID: 7989 at fs/sysfs/dir.c:30 sysfs_warn_dup.cold+0x17/0x26 [ 35.323262] Kernel panic - not syncing: panic_on_warn set ... [ 35.323262] [ 35.330650] CPU: 1 PID: 7989 Comm: syz-executor180 Not tainted 4.14.302-syzkaller #0 [ 35.338633] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 [ 35.347994] Call Trace: [ 35.350605] dump_stack+0x1b2/0x281 [ 35.354409] panic+0x1f9/0x42d [ 35.356094] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' [ 35.357616] ? add_taint.cold+0x16/0x16 [ 35.357633] ? sysfs_warn_dup.cold+0x17/0x26 [ 35.357648] ? sysfs_warn_dup.cold+0x17/0x26 [ 35.357658] __warn.cold+0x20/0x44 [ 35.357669] ? ist_end_non_atomic+0x10/0x10 [ 35.357681] ? sysfs_warn_dup.cold+0x17/0x26 [ 35.372463] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' [ 35.372717] report_bug+0x208/0x250 [ 35.380885] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' [ 35.384971] do_error_trap+0x195/0x2d0 [ 35.384985] ? math_error+0x2d0/0x2d0 [ 35.384998] ? ___preempt_schedule+0x16/0x18 [ 35.385013] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 35.385029] invalid_op+0x1b/0x40 [ 35.385040] RIP: 0010:sysfs_warn_dup.cold+0x17/0x26 [ 35.385049] RSP: 0018:ffff88808f8ef728 EFLAGS: 00010282 [ 35.393211] ------------[ cut here ]------------ [ 35.399738] WARNING: CPU: 0 PID: 7987 at fs/sysfs/dir.c:30 sysfs_warn_dup.cold+0x17/0x26 [ 35.406383] RAX: 000000000000003a RBX: ffff88809552dc50 RCX: 0000000000000000 [ 35.406393] RDX: 0000000000000000 RSI: ffffffff878bd020 RDI: ffffed1011f1dedb [ 35.410264] Modules linked in: [ 35.414071] RBP: ffff8880b2cc6700 R08: 000000000000003a R09: 0000000000000000 [ 35.418571] CPU: 0 PID: 7987 Comm: syz-executor180 Not tainted 4.14.302-syzkaller #0 [ 35.423402] R10: 0000000000000000 R11: 0000000000000000 R12: ffff888238fcc0e0 [ 35.427018] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 [ 35.432018] R13: ffff8880b0295200 R14: ffff88809552dc58 R15: ffff8880b2879c18 [ 35.437379] task: ffff8880b3384300 task.stack: ffff888091a78000 [ 35.442149] ? sysfs_warn_dup.cold+0x17/0x26 [ 35.450344] RIP: 0010:sysfs_warn_dup.cold+0x17/0x26 [ 35.457604] sysfs_create_dir_ns+0x16f/0x1d0 [ 35.464864] RSP: 0018:ffff888091a7f728 EFLAGS: 00010282 [ 35.468051] kobject_add_internal+0x28b/0x930 [ 35.483911] kobject_init_and_add+0xde/0x120 [ 35.491166] RAX: 000000000000003a RBX: ffff888095ad9d10 RCX: 0000000000000000 [ 35.491177] RDX: 0000000000000000 RSI: ffffffff878bd020 RDI: ffffed101234fedb [ 35.500627] ? kobject_create_and_add+0x200/0x200 [ 35.507970] RBP: ffff8880957f0200 R08: 000000000000003a R09: 0000000000000001 [ 35.514023] ? vsnprintf+0x260/0x1340 [ 35.518525] R10: 0000000000000000 R11: 0000000000000000 R12: ffff888238fcc0e0 [ 35.523536] gfs2_sys_fs_add+0x184/0x3f0 [ 35.528112] R13: ffff8880b6124c80 R14: ffff888095ad9d18 R15: ffff8880b18a5cd8 [ 35.533466] ? recover_store+0x100/0x100 [ 35.537944] FS: 0000555556b46300(0000) GS:ffff8880ba400000(0000) knlGS:0000000000000000 [ 35.542686] ? snprintf+0xa5/0xd0 [ 35.549956] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 35.557310] ? strscpy+0x94/0x280 [ 35.562144] CR2: 000055737144d262 CR3: 000000009b31f000 CR4: 00000000003406f0 [ 35.569494] fill_super+0x118b/0x2310 [ 35.573296] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 35.580758] ? vsnprintf+0x260/0x1340 [ 35.584796] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 35.592151] ? gfs2_online_uevent+0x1b0/0x1b0 [ 35.596311] Call Trace: [ 35.604542] ? pointer+0x9e0/0x9e0 [ 35.607978] sysfs_create_dir_ns+0x16f/0x1d0 [ 35.613856] ? snprintf+0xa5/0xd0 [ 35.617293] kobject_add_internal+0x28b/0x930 [ 35.624546] ? vsprintf+0x30/0x30 [ 35.628355] kobject_init_and_add+0xde/0x120 [ 35.635604] ? gfs2_open+0x160/0x160 [ 35.639389] ? kobject_create_and_add+0x200/0x200 [ 35.646657] ? set_blocksize+0x125/0x380 [ 35.651148] ? vsnprintf+0x260/0x1340 [ 35.653748] gfs2_mount+0x439/0x510 [ 35.657364] gfs2_sys_fs_add+0x184/0x3f0 [ 35.661750] ? fill_super+0x2310/0x2310 [ 35.665298] ? recover_store+0x100/0x100 [ 35.669792] ? alloc_pages_current+0x15d/0x260 [ 35.673221] ? snprintf+0xa5/0xd0 [ 35.677615] ? __lockdep_init_map+0x100/0x560 [ 35.681316] ? strscpy+0x94/0x280 [ 35.686137] mount_fs+0x92/0x2a0 [ 35.690271] fill_super+0x118b/0x2310 [ 35.694068] vfs_kern_mount.part.0+0x5b/0x470 [ 35.697765] ? vsnprintf+0x260/0x1340 [ 35.701809] do_mount+0xe65/0x2a30 [ 35.705774] ? gfs2_online_uevent+0x1b0/0x1b0 [ 35.709833] ? retint_kernel+0x2d/0x2d [ 35.714483] ? pointer+0x9e0/0x9e0 [ 35.717919] ? copy_mount_string+0x40/0x40 [ 35.722405] ? snprintf+0xa5/0xd0 [ 35.725845] ? memset+0x20/0x40 [ 35.729459] ? vsprintf+0x30/0x30 [ 35.733244] ? copy_mount_options+0x1fa/0x2f0 [ 35.737904] ? gfs2_open+0x160/0x160 [ 35.741696] ? copy_mnt_ns+0xa30/0xa30 [ 35.745395] ? set_blocksize+0x125/0x380 [ 35.749883] SyS_mount+0xa8/0x120 [ 35.753761] gfs2_mount+0x439/0x510 [ 35.757283] ? copy_mnt_ns+0xa30/0xa30 [ 35.761519] ? fill_super+0x2310/0x2310 [ 35.764972] do_syscall_64+0x1d5/0x640 [ 35.768255] ? alloc_pages_current+0x15d/0x260 [ 35.771680] entry_SYSCALL_64_after_hwframe+0x5e/0xd3 [ 35.776167] ? __lockdep_init_map+0x100/0x560 [ 35.780039] RIP: 0033:0x7f2beabb76da [ 35.783921] mount_fs+0x92/0x2a0 [ 35.787963] RSP: 002b:00007fff8aee37f8 EFLAGS: 00000282 [ 35.791417] vfs_kern_mount.part.0+0x5b/0x470 [ 35.795113] ORIG_RAX: 00000000000000a5 [ 35.798994] do_mount+0xe65/0x2a30 [ 35.802951] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f2beabb76da [ 35.806831] ? retint_kernel+0x2d/0x2d [ 35.811396] RDX: 0000000020037f40 RSI: 0000000020037f80 RDI: 00007fff8aee3810 [ 35.816590] ? copy_mount_string+0x40/0x40 [ 35.821068] RBP: 00007fff8aee3810 R08: 00007fff8aee3850 R09: 0000000000000002 [ 35.824773] ? memset+0x20/0x40 [ 35.828119] R10: 0000000000000000 R11: 0000000000000282 R12: 0000000000000004 [ 35.833561] ? copy_mount_options+0x1fa/0x2f0 [ 35.838035] R13: 0000555556b462c0 R14: 0000000000000000 R15: 00007fff8aee3850 [ 35.897785] ? copy_mnt_ns+0xa30/0xa30 [ 35.901669] SyS_mount+0xa8/0x120 [ 35.905121] ? copy_mnt_ns+0xa30/0xa30 [ 35.909004] do_syscall_64+0x1d5/0x640 [ 35.912896] entry_SYSCALL_64_after_hwframe+0x5e/0xd3 [ 35.918082] RIP: 0033:0x7f2beabb76da [ 35.921791] RSP: 002b:00007fff8aee37f8 EFLAGS: 00000282 ORIG_RAX: 00000000000000a5 [ 35.929494] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f2beabb76da [ 35.936758] RDX: 0000000020037f40 RSI: 0000000020037f80 RDI: 00007fff8aee3810 [ 35.944128] RBP: 00007fff8aee3810 R08: 00007fff8aee3850 R09: 0000000000000002 [ 35.951620] R10: 0000000000000000 R11: 0000000000000282 R12: 0000000000000004 [ 35.958901] R13: 0000555556b462c0 R14: 0000000000000000 R15: 00007fff8aee3850 [ 35.966345] 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 [ 35.985580] ---[ end trace d58e9b3f68569a92 ]--- [ 35.990393] Kernel Offset: disabled [ 35.994071] Rebooting in 86400 seconds..