[ OK ] Reached target Graphical Interface. Starting Update UTMP about System Runlevel Changes... Starting Load/Save RF Kill Switch Status... [ OK ] Started Update UTMP about System Runlevel Changes. [ OK ] Started Load/Save RF Kill Switch Status. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.1.81' (ECDSA) to the list of known hosts. syzkaller login: [ 31.125152] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 31.133395] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' [ 31.145387] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' [ 31.145819] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' [ 31.161603] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' [ 31.175906] ------------[ cut here ]------------ [ 31.180688] WARNING: CPU: 0 PID: 7967 at fs/sysfs/dir.c:30 sysfs_warn_dup.cold+0x17/0x26 [ 31.182555] ------------[ cut here ]------------ [ 31.188905] Kernel panic - not syncing: panic_on_warn set ... [ 31.188905] [ 31.193654] WARNING: CPU: 1 PID: 7973 at fs/sysfs/dir.c:30 sysfs_warn_dup.cold+0x17/0x26 [ 31.200977] CPU: 0 PID: 7967 Comm: syz-executor280 Not tainted 4.14.300-syzkaller #0 [ 31.209173] Modules linked in: [ 31.217045] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 [ 31.220214] Call Trace: [ 31.229544] CPU: 1 PID: 7973 Comm: syz-executor280 Not tainted 4.14.300-syzkaller #0 [ 31.232108] dump_stack+0x1b2/0x281 [ 31.239977] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 [ 31.243931] panic+0x1f9/0x42d [ 31.253262] task: ffff8880959dc5c0 task.stack: ffff888095a38000 [ 31.253272] RIP: 0010:sysfs_warn_dup.cold+0x17/0x26 [ 31.256441] ? add_taint.cold+0x16/0x16 [ 31.262468] RSP: 0018:ffff888095a3f728 EFLAGS: 00010282 [ 31.267659] ? sysfs_warn_dup.cold+0x17/0x26 [ 31.276963] ? sysfs_warn_dup.cold+0x17/0x26 [ 31.281342] RAX: 000000000000003a RBX: ffff88809faa1dd0 RCX: 0000000000000000 [ 31.281349] RDX: 0000000000000000 RSI: ffffffff878bd060 RDI: ffffed1012b47edb [ 31.285857] __warn.cold+0x20/0x44 [ 31.293107] RBP: ffff888095bf42c0 R08: 000000000000003a R09: 0000000000000000 [ 31.300382] ? ist_end_non_atomic+0x10/0x10 [ 31.303890] R10: 0000000000000000 R11: 0000000000000000 R12: ffff8882388197e0 [ 31.311139] ? sysfs_warn_dup.cold+0x17/0x26 [ 31.315491] R13: ffff8880b3d01a00 R14: ffff88809faa1dd8 R15: ffff8880af291d58 [ 31.315510] FS: 0000555556092300(0000) GS:ffff8880ba500000(0000) knlGS:0000000000000000 [ 31.322878] report_bug+0x208/0x250 [ 31.327337] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 31.334609] do_error_trap+0x195/0x2d0 [ 31.342812] CR2: 00007f7877d49000 CR3: 000000009b2c8000 CR4: 00000000003406e0 [ 31.346416] ? math_error+0x2d0/0x2d0 [ 31.352272] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 31.356150] ? ___preempt_schedule+0x16/0x18 [ 31.363477] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 31.367271] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 31.374507] Call Trace: [ 31.378895] invalid_op+0x1b/0x40 [ 31.386142] sysfs_create_dir_ns+0x16f/0x1d0 [ 31.390973] ? sysfs_warn_dup.cold+0x17/0x26 [ 31.393544] kobject_add_internal+0x28b/0x930 [ 31.396977] ? sysfs_warn_dup.cold+0x17/0x26 [ 31.401361] kobject_init_and_add+0xde/0x120 [ 31.405742] ? sysfs_create_dir_ns+0x16f/0x1d0 [ 31.410222] ? kobject_create_and_add+0x200/0x200 [ 31.414610] ? kobject_add_internal+0x28b/0x930 [ 31.419022] ? vsnprintf+0x260/0x1340 [ 31.423600] ? kobject_init_and_add+0xde/0x120 [ 31.428418] gfs2_sys_fs_add+0x184/0x3f0 [ 31.433057] ? kobject_create_and_add+0x200/0x200 [ 31.436854] ? recover_store+0x100/0x100 [ 31.441843] ? vsnprintf+0x260/0x1340 [ 31.445877] ? snprintf+0xa5/0xd0 [ 31.450694] ? gfs2_sys_fs_add+0x184/0x3f0 [ 31.454729] ? strscpy+0x94/0x280 [ 31.458525] ? recover_store+0x100/0x100 [ 31.461957] fill_super+0x118b/0x2310 [ 31.466172] ? snprintf+0xa5/0xd0 [ 31.469658] ? vsnprintf+0x260/0x1340 [ 31.473704] ? strscpy+0x94/0x280 [ 31.477480] ? gfs2_online_uevent+0x1b0/0x1b0 [ 31.480913] ? fill_super+0x118b/0x2310 [ 31.484687] ? pointer+0x9e0/0x9e0 [ 31.488148] ? vsnprintf+0x260/0x1340 [ 31.492633] ? snprintf+0xa5/0xd0 [ 31.496589] ? gfs2_online_uevent+0x1b0/0x1b0 [ 31.500107] ? vsprintf+0x30/0x30 [ 31.503887] ? pointer+0x9e0/0x9e0 [ 31.507324] ? gfs2_open+0x160/0x160 [ 31.511802] ? snprintf+0xa5/0xd0 [ 31.515337] ? set_blocksize+0x125/0x380 [ 31.518854] ? vsprintf+0x30/0x30 [ 31.522555] gfs2_mount+0x439/0x510 [ 31.525981] ? gfs2_open+0x160/0x160 [ 31.530018] ? fill_super+0x2310/0x2310 [ 31.533448] ? set_blocksize+0x125/0x380 [ 31.537060] ? alloc_pages_current+0x15d/0x260 [ 31.540741] ? gfs2_mount+0x439/0x510 [ 31.544687] ? __lockdep_init_map+0x100/0x560 [ 31.548718] ? fill_super+0x2310/0x2310 [ 31.553291] mount_fs+0x92/0x2a0 [ 31.557604] ? alloc_pages_current+0x15d/0x260 [ 31.562070] vfs_kern_mount.part.0+0x5b/0x470 [ 31.566019] ? __lockdep_init_map+0x100/0x560 [ 31.569354] do_mount+0xe65/0x2a30 [ 31.573920] ? mount_fs+0x92/0x2a0 [ 31.578398] ? do_raw_spin_unlock+0x164/0x220 [ 31.582875] ? vfs_kern_mount.part.0+0x5b/0x470 [ 31.586396] ? copy_mount_string+0x40/0x40 [ 31.589924] ? do_mount+0xe65/0x2a30 [ 31.594398] ? rcu_read_lock_sched_held+0x16c/0x1d0 [ 31.601658] ? retint_kernel+0x2d/0x2d [ 31.605879] ? copy_mnt_ns+0xa30/0xa30 [ 31.609567] ? copy_mount_string+0x40/0x40 [ 31.614561] ? copy_mount_options+0x1fa/0x2f0 [ 31.618450] ? copy_mount_options+0x17d/0x2f0 [ 31.622313] ? copy_mnt_ns+0xa30/0xa30 [ 31.626519] ? copy_mount_options+0x1fa/0x2f0 [ 31.630988] SyS_mount+0xa8/0x120 [ 31.635452] ? copy_mnt_ns+0xa30/0xa30 [ 31.639309] ? copy_mnt_ns+0xa30/0xa30 [ 31.643778] ? SyS_mount+0xa8/0x120 [ 31.647209] do_syscall_64+0x1d5/0x640 [ 31.651214] ? copy_mnt_ns+0xa30/0xa30 [ 31.655100] entry_SYSCALL_64_after_hwframe+0x5e/0xd3 [ 31.658707] ? do_syscall_64+0x1d5/0x640 [ 31.662571] Code: [ 31.666434] ? entry_SYSCALL_64_after_hwframe+0x5e/0xd3 [ 31.671590] bd ea ff 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 [ 31.701928] ---[ end trace 86e8d37828c3f354 ]--- [ 31.706823] Kernel Offset: disabled [ 31.710564] Rebooting in 86400 seconds..