[ 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 '10.128.1.42' (ECDSA) to the list of known hosts. syzkaller login: [ 33.702131] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 33.714959] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' [ 33.725499] ------------[ cut here ]------------ [ 33.730273] WARNING: CPU: 1 PID: 7965 at fs/sysfs/dir.c:30 sysfs_warn_dup.cold+0x17/0x26 [ 33.738494] Kernel panic - not syncing: panic_on_warn set ... [ 33.738494] [ 33.745861] CPU: 1 PID: 7965 Comm: syz-executor322 Not tainted 4.14.302-syzkaller #0 [ 33.753734] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 [ 33.755369] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' [ 33.763077] Call Trace: [ 33.763095] dump_stack+0x1b2/0x281 [ 33.763106] panic+0x1f9/0x42d [ 33.763114] ? add_taint.cold+0x16/0x16 [ 33.763124] ? sysfs_warn_dup.cold+0x17/0x26 [ 33.763132] ? sysfs_warn_dup.cold+0x17/0x26 [ 33.763137] __warn.cold+0x20/0x44 [ 33.763146] ? ist_end_non_atomic+0x10/0x10 [ 33.763155] ? sysfs_warn_dup.cold+0x17/0x26 [ 33.779266] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' [ 33.783106] report_bug+0x208/0x250 [ 33.783118] do_error_trap+0x195/0x2d0 [ 33.783125] ? math_error+0x2d0/0x2d0 [ 33.783133] ? ___preempt_schedule+0x16/0x18 [ 33.783144] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 33.791020] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' [ 33.791933] invalid_op+0x1b/0x40 [ 33.791943] RIP: 0010:sysfs_warn_dup.cold+0x17/0x26 [ 33.791947] RSP: 0018:ffff8880a27e7728 EFLAGS: 00010282 [ 33.791955] RAX: 000000000000003a RBX: ffff8880957a9c90 RCX: 0000000000000000 [ 33.791967] RDX: 0000000000000000 RSI: ffffffff878bd020 RDI: ffffed10144fcedb [ 33.791974] RBP: ffff88808f638a00 R08: 000000000000003a R09: 0000000000000000 [ 33.795594] ------------[ cut here ]------------ [ 33.799795] R10: 0000000000000000 R11: 0000000000000000 R12: ffff888238f6e0e0 [ 33.799805] R13: ffff8880b610d540 R14: ffff8880957a9c98 R15: ffff88809d2b1c58 [ 33.804190] WARNING: CPU: 0 PID: 7962 at fs/sysfs/dir.c:30 sysfs_warn_dup.cold+0x17/0x26 [ 33.810833] ? sysfs_warn_dup.cold+0x17/0x26 [ 33.814425] Modules linked in: [ 33.818305] sysfs_create_dir_ns+0x16f/0x1d0 [ 33.818316] kobject_add_internal+0x28b/0x930 [ 33.822102] CPU: 0 PID: 7962 Comm: syz-executor322 Not tainted 4.14.302-syzkaller #0 [ 33.826499] kobject_init_and_add+0xde/0x120 [ 33.831305] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 [ 33.837956] ? kobject_create_and_add+0x200/0x200 [ 33.841375] task: ffff8880b351a400 task.stack: ffff8880a2ba8000 [ 33.846458] ? vsnprintf+0x260/0x1340 [ 33.851889] RIP: 0010:sysfs_warn_dup.cold+0x17/0x26 [ 33.859155] gfs2_sys_fs_add+0x184/0x3f0 [ 33.866401] RSP: 0018:ffff8880a2baf728 EFLAGS: 00010282 [ 33.873824] ? recover_store+0x100/0x100 [ 33.885799] ? snprintf+0xa5/0xd0 [ 33.893132] RAX: 000000000000003a RBX: ffff8880b2aa1d50 RCX: 0000000000000000 [ 33.901336] ? strscpy+0x94/0x280 [ 33.905714] RDX: 0000000000000000 RSI: ffffffff878bd020 RDI: ffffed1014575edb [ 33.908967] fill_super+0x118b/0x2310 [ 33.913350] RBP: ffff8880b2a5c9c0 R08: 000000000000003a R09: 0000000000000001 [ 33.917824] ? vsnprintf+0x260/0x1340 [ 33.925668] R10: 0000000000000000 R11: 0000000000000000 R12: ffff888238f6e0e0 [ 33.925674] R13: ffff8880b0c35180 R14: ffff8880b2aa1d58 R15: ffff888095625d18 [ 33.930057] ? gfs2_online_uevent+0x1b0/0x1b0 [ 33.939381] FS: 0000555557553300(0000) GS:ffff8880ba400000(0000) knlGS:0000000000000000 [ 33.944193] ? pointer+0x9e0/0x9e0 [ 33.950399] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 33.950405] CR2: 000055dcdf347030 CR3: 00000000abe5c000 CR4: 00000000003406f0 [ 33.954193] ? snprintf+0xa5/0xd0 [ 33.959191] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 33.963222] ? vsprintf+0x30/0x30 [ 33.968553] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 33.972587] ? gfs2_open+0x160/0x160 [ 33.976008] Call Trace: [ 33.983265] ? set_blocksize+0x125/0x380 [ 33.986696] sysfs_create_dir_ns+0x16f/0x1d0 [ 33.993938] gfs2_mount+0x439/0x510 [ 33.997721] kobject_add_internal+0x28b/0x930 [ 34.004971] ? fill_super+0x2310/0x2310 [ 34.008747] kobject_init_and_add+0xde/0x120 [ 34.016016] ? alloc_pages_current+0x15d/0x260 [ 34.023257] ? kobject_create_and_add+0x200/0x200 [ 34.027727] ? __lockdep_init_map+0x100/0x560 [ 34.036037] ? vsnprintf+0x260/0x1340 [ 34.039635] mount_fs+0x92/0x2a0 [ 34.045514] gfs2_sys_fs_add+0x184/0x3f0 [ 34.052768] vfs_kern_mount.part.0+0x5b/0x470 [ 34.056191] ? recover_store+0x100/0x100 [ 34.063529] do_mount+0xe65/0x2a30 [ 34.066951] ? snprintf+0xa5/0xd0 [ 34.074208] ? copy_mount_string+0x40/0x40 [ 34.077896] ? strscpy+0x94/0x280 [ 34.080479] ? rcu_read_lock_sched_held+0x16c/0x1d0 [ 34.084508] fill_super+0x118b/0x2310 [ 34.088886] ? copy_mnt_ns+0xa30/0xa30 [ 34.092487] ? vsnprintf+0x260/0x1340 [ 34.096958] ? copy_mount_options+0x1fa/0x2f0 [ 34.100902] ? gfs2_online_uevent+0x1b0/0x1b0 [ 34.105279] ? copy_mnt_ns+0xa30/0xa30 [ 34.109833] ? pointer+0x9e0/0x9e0 [ 34.114652] SyS_mount+0xa8/0x120 [ 34.119123] ? snprintf+0xa5/0xd0 [ 34.122893] ? copy_mnt_ns+0xa30/0xa30 [ 34.126317] ? vsprintf+0x30/0x30 [ 34.130353] do_syscall_64+0x1d5/0x640 [ 34.134819] ? gfs2_open+0x160/0x160 [ 34.138858] entry_SYSCALL_64_after_hwframe+0x5e/0xd3 [ 34.142367] ? set_blocksize+0x125/0x380 [ 34.145790] RIP: 0033:0x7fe3391d46fa [ 34.150024] gfs2_mount+0x439/0x510 [ 34.153445] RSP: 002b:00007ffd10c72df8 EFLAGS: 00000282 [ 34.158436] ? fill_super+0x2310/0x2310 [ 34.162206] ORIG_RAX: 00000000000000a5 [ 34.166080] ? alloc_pages_current+0x15d/0x260 [ 34.169846] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007fe3391d46fa [ 34.174310] ? __lockdep_init_map+0x100/0x560 [ 34.174318] mount_fs+0x92/0x2a0 [ 34.178782] RDX: 0000000020037f40 RSI: 0000000020037f80 RDI: 00007ffd10c72e10 [ 34.182648] vfs_kern_mount.part.0+0x5b/0x470 [ 34.186178] RBP: 00007ffd10c72e10 R08: 00007ffd10c72e50 R09: 0000000000000002 [ 34.189620] do_mount+0xe65/0x2a30 [ 34.193040] R10: 0000000000000000 R11: 0000000000000282 R12: 0000000000000004 [ 34.196918] ? copy_mount_string+0x40/0x40 [ 34.200338] R13: 00005555575532c0 R14: 0000000000000000 R15: 00007ffd10c72e50 [ 34.204215] ? rcu_read_lock_sched_held+0x16c/0x1d0 [ 34.303597] ? copy_mnt_ns+0xa30/0xa30 [ 34.307471] ? copy_mount_options+0x1fa/0x2f0 [ 34.312032] ? copy_mnt_ns+0xa30/0xa30 [ 34.315907] SyS_mount+0xa8/0x120 [ 34.319357] ? copy_mnt_ns+0xa30/0xa30 [ 34.323229] do_syscall_64+0x1d5/0x640 [ 34.327104] entry_SYSCALL_64_after_hwframe+0x5e/0xd3 [ 34.332276] RIP: 0033:0x7fe3391d46fa [ 34.335967] RSP: 002b:00007ffd10c72df8 EFLAGS: 00000282 ORIG_RAX: 00000000000000a5 [ 34.343743] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007fe3391d46fa [ 34.350996] RDX: 0000000020037f40 RSI: 0000000020037f80 RDI: 00007ffd10c72e10 [ 34.358246] RBP: 00007ffd10c72e10 R08: 00007ffd10c72e50 R09: 0000000000000002 [ 34.365505] R10: 0000000000000000 R11: 0000000000000282 R12: 0000000000000004 [ 34.372759] R13: 00005555575532c0 R14: 0000000000000000 R15: 00007ffd10c72e50 [ 34.380025] 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 [ 34.399303] ---[ end trace ec316dafb1169bb7 ]--- [ 34.404194] Kernel Offset: disabled [ 34.407852] Rebooting in 86400 seconds..