Warning: Permanently added '10.128.0.239' (ECDSA) to the list of known hosts. syzkaller login: [ 29.960853] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' [ 29.970334] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 29.995524] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' [ 29.997092] ------------[ cut here ]------------ [ 30.004925] ------------[ cut here ]------------ [ 30.006956] WARNING: CPU: 0 PID: 7966 at fs/sysfs/dir.c:30 sysfs_warn_dup.cold+0x17/0x26 [ 30.013158] WARNING: CPU: 1 PID: 7962 at fs/sysfs/dir.c:30 sysfs_warn_dup.cold+0x17/0x26 [ 30.021351] Kernel panic - not syncing: panic_on_warn set ... [ 30.021351] [ 30.029553] Modules linked in: [ 30.036888] CPU: 0 PID: 7966 Comm: syz-executor391 Not tainted 4.14.302-syzkaller #0 [ 30.036897] CPU: 1 PID: 7962 Comm: syz-executor391 Not tainted 4.14.302-syzkaller #0 [ 30.040063] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 [ 30.047913] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 [ 30.055763] Call Trace: [ 30.065093] task: ffff888095b1c400 task.stack: ffff888096338000 [ 30.074425] dump_stack+0x1b2/0x281 [ 30.076979] RIP: 0010:sysfs_warn_dup.cold+0x17/0x26 [ 30.083006] panic+0x1f9/0x42d [ 30.086602] RSP: 0018:ffff88809633f728 EFLAGS: 00010282 [ 30.091591] ? add_taint.cold+0x16/0x16 [ 30.100092] ? sysfs_warn_dup.cold+0x17/0x26 [ 30.104033] RAX: 000000000000003a RBX: ffff88809dca9c90 RCX: 0000000000000000 [ 30.108416] ? sysfs_warn_dup.cold+0x17/0x26 [ 30.115658] RDX: 0000000000000000 RSI: ffffffff878bd020 RDI: ffffed1012c67edb [ 30.120037] __warn.cold+0x20/0x44 [ 30.127288] RBP: ffff8880b1824300 R08: 000000000000003a R09: 0000000000000000 [ 30.130801] ? ist_end_non_atomic+0x10/0x10 [ 30.138045] R10: 0000000000000000 R11: 0000000000000000 R12: ffff8880b0f76460 [ 30.142337] ? sysfs_warn_dup.cold+0x17/0x26 [ 30.149606] R13: ffff8880b6124a00 R14: ffff88809dca9c98 R15: ffff8880900d1c18 [ 30.149614] FS: 0000555555e83300(0000) GS:ffff8880ba500000(0000) knlGS:0000000000000000 [ 30.154014] report_bug+0x208/0x250 [ 30.161258] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 30.169471] do_error_trap+0x195/0x2d0 [ 30.173068] CR2: 000055671389917f CR3: 0000000097d31000 CR4: 00000000003406e0 [ 30.178930] ? math_error+0x2d0/0x2d0 [ 30.182786] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 30.190031] ? ___preempt_schedule+0x16/0x18 [ 30.193803] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 30.201054] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 30.205426] Call Trace: [ 30.212676] invalid_op+0x1b/0x40 [ 30.217489] sysfs_create_dir_ns+0x16f/0x1d0 [ 30.220047] RIP: 0010:sysfs_warn_dup.cold+0x17/0x26 [ 30.223469] kobject_add_internal+0x28b/0x930 [ 30.227845] RSP: 0018:ffff8880b4797728 EFLAGS: 00010282 [ 30.232838] kobject_init_and_add+0xde/0x120 [ 30.242635] ? kobject_create_and_add+0x200/0x200 [ 30.247005] RAX: 000000000000003a RBX: ffff8880900d1c10 RCX: 0000000000000000 [ 30.247011] RDX: 0000000000000000 RSI: ffffffff878bd020 RDI: ffffed10168f2edb [ 30.251828] ? vsnprintf+0x260/0x1340 [ 30.259067] RBP: ffff8880b3622840 R08: 000000000000003a R09: 0000000000000000 [ 30.266320] gfs2_sys_fs_add+0x184/0x3f0 [ 30.270082] R10: 0000000000000000 R11: 0000000000000000 R12: ffff8880b0f76460 [ 30.270089] R13: ffff8880b2900a80 R14: ffff8880900d1c18 R15: ffff8880900d9c58 [ 30.277418] ? recover_store+0x100/0x100 [ 30.281456] ? sysfs_warn_dup.cold+0x17/0x26 [ 30.288712] ? snprintf+0xa5/0xd0 [ 30.295955] sysfs_create_dir_ns+0x16f/0x1d0 [ 30.299991] ? strscpy+0x94/0x280 [ 30.304366] kobject_add_internal+0x28b/0x930 [ 30.307792] fill_super+0x118b/0x2310 [ 30.312171] kobject_init_and_add+0xde/0x120 [ 30.315594] ? vsnprintf+0x260/0x1340 [ 30.320151] ? kobject_create_and_add+0x200/0x200 [ 30.323923] ? gfs2_online_uevent+0x1b0/0x1b0 [ 30.328301] ? vsnprintf+0x260/0x1340 [ 30.332071] ? pointer+0x9e0/0x9e0 [ 30.336892] gfs2_sys_fs_add+0x184/0x3f0 [ 30.341502] ? snprintf+0xa5/0xd0 [ 30.345279] ? recover_store+0x100/0x100 [ 30.348801] ? vsprintf+0x30/0x30 [ 30.352836] ? snprintf+0xa5/0xd0 [ 30.356261] ? gfs2_open+0x160/0x160 [ 30.360293] ? strscpy+0x94/0x280 [ 30.363719] ? set_blocksize+0x125/0x380 [ 30.367141] fill_super+0x118b/0x2310 [ 30.370836] gfs2_mount+0x439/0x510 [ 30.374269] ? vsnprintf+0x260/0x1340 [ 30.378298] ? fill_super+0x2310/0x2310 [ 30.382069] ? gfs2_online_uevent+0x1b0/0x1b0 [ 30.385682] ? alloc_pages_current+0x15d/0x260 [ 30.389441] ? pointer+0x9e0/0x9e0 [ 30.393387] ? __lockdep_init_map+0x100/0x560 [ 30.397858] ? snprintf+0xa5/0xd0 [ 30.402410] mount_fs+0x92/0x2a0 [ 30.405926] ? vsprintf+0x30/0x30 [ 30.410393] vfs_kern_mount.part.0+0x5b/0x470 [ 30.413814] ? gfs2_open+0x160/0x160 [ 30.417154] do_mount+0xe65/0x2a30 [ 30.420575] ? set_blocksize+0x125/0x380 [ 30.425045] ? copy_mount_string+0x40/0x40 [ 30.428726] gfs2_mount+0x439/0x510 [ 30.432238] ? rcu_read_lock_sched_held+0x16c/0x1d0 [ 30.436267] ? fill_super+0x2310/0x2310 [ 30.440473] ? copy_mnt_ns+0xa30/0xa30 [ 30.444082] ? alloc_pages_current+0x15d/0x260 [ 30.449060] ? copy_mount_options+0x1fa/0x2f0 [ 30.453004] ? __lockdep_init_map+0x100/0x560 [ 30.456861] ? copy_mnt_ns+0xa30/0xa30 [ 30.461415] mount_fs+0x92/0x2a0 [ 30.465881] SyS_mount+0xa8/0x120 [ 30.470349] vfs_kern_mount.part.0+0x5b/0x470 [ 30.474207] ? copy_mnt_ns+0xa30/0xa30 [ 30.477553] do_mount+0xe65/0x2a30 [ 30.480978] do_syscall_64+0x1d5/0x640 [ 30.485442] ? do_raw_spin_unlock+0x164/0x220 [ 30.489312] entry_SYSCALL_64_after_hwframe+0x5e/0xd3 [ 30.492822] ? copy_mount_string+0x40/0x40 [ 30.496678] RIP: 0033:0x7f34611626aa [ 30.501145] ? rcu_read_lock_sched_held+0x16c/0x1d0 [ 30.506299] RSP: 002b:00007ffd07518b88 EFLAGS: 00000282 [ 30.510514] ? copy_mnt_ns+0xa30/0xa30 [ 30.514196] ORIG_RAX: 00000000000000a5 [ 30.519185] ? copy_mount_options+0x1fa/0x2f0 [ 30.524519] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f34611626aa [ 30.528377] ? copy_mnt_ns+0xa30/0xa30 [ 30.532319] RDX: 00000000200124c0 RSI: 0000000020012500 RDI: 00007ffd07518b90 [ 30.536791] SyS_mount+0xa8/0x120 [ 30.544030] RBP: 00007ffd07518b90 R08: 00007ffd07518bd0 R09: 0000000000000002 [ 30.547888] ? copy_mnt_ns+0xa30/0xa30 [ 30.555128] R10: 000000000020400f R11: 0000000000000282 R12: 0000000000000004 [ 30.558554] do_syscall_64+0x1d5/0x640 [ 30.565794] R13: 0000555555e832c0 R14: 00007ffd07518bd0 R15: 0000000000000000 [ 30.569656] entry_SYSCALL_64_after_hwframe+0x5e/0xd3 [ 30.576899] Code: [ 30.580755] RIP: 0033:0x7f34611626aa [ 30.587995] bd [ 30.593154] RSP: 002b:00007ffd07518b88 EFLAGS: 00000282 [ 30.595273] ea [ 30.598964] ORIG_RAX: 00000000000000a5 [ 30.600822] ff [ 30.606157] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f34611626aa [ 30.608017] ff [ 30.611962] RDX: 00000000200124c0 RSI: 0000000020012500 RDI: 00007ffd07518b90 [ 30.613819] ff [ 30.621064] RBP: 00007ffd07518b90 R08: 00007ffd07518bd0 R09: 0000000000000002 [ 30.622921] e9 [ 30.630168] R10: 000000000020400f R11: 0000000000000282 R12: 0000000000000004 [ 30.632030] 8f [ 30.639275] R13: 0000555555e832c0 R14: 00007ffd07518bd0 R15: 0000000000000000 [ 30.641136] 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 [ 30.674303] ---[ end trace d6b714d939d1b86b ]--- [ 30.679189] Kernel Offset: disabled [ 30.682843] Rebooting in 86400 seconds..