Warning: Permanently added '10.128.1.115' (ECDSA) to the list of known hosts. [ 39.965869] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' [ 39.975286] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 39.990991] ------------[ cut here ]------------ [ 39.995777] WARNING: CPU: 1 PID: 8022 at fs/sysfs/dir.c:30 sysfs_warn_dup.cold+0x17/0x26 [ 40.003999] Kernel panic - not syncing: panic_on_warn set ... [ 40.003999] [ 40.011371] CPU: 1 PID: 8022 Comm: syz-executor415 Not tainted 4.14.300-syzkaller #0 [ 40.019246] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 [ 40.022944] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' [ 40.028588] Call Trace: [ 40.028603] dump_stack+0x1b2/0x281 [ 40.028614] panic+0x1f9/0x42d [ 40.028625] ? add_taint.cold+0x16/0x16 [ 40.036414] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' [ 40.037841] ? sysfs_warn_dup.cold+0x17/0x26 [ 40.037851] ? sysfs_warn_dup.cold+0x17/0x26 [ 40.037859] __warn.cold+0x20/0x44 [ 40.037869] ? ist_end_non_atomic+0x10/0x10 [ 40.043973] ------------[ cut here ]------------ [ 40.044653] ? sysfs_warn_dup.cold+0x17/0x26 [ 40.048604] WARNING: CPU: 0 PID: 8019 at fs/sysfs/dir.c:30 sysfs_warn_dup.cold+0x17/0x26 [ 40.055239] report_bug+0x208/0x250 [ 40.059614] Modules linked in: [ 40.064022] do_error_trap+0x195/0x2d0 [ 40.067518] CPU: 0 PID: 8019 Comm: syz-executor415 Not tainted 4.14.300-syzkaller #0 [ 40.071813] ? math_error+0x2d0/0x2d0 [ 40.076537] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 [ 40.080922] ? ___preempt_schedule+0x16/0x18 [ 40.089118] task: ffff8880b29282c0 task.stack: ffff8880b3410000 [ 40.092724] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 40.095885] RIP: 0010:sysfs_warn_dup.cold+0x17/0x26 [ 40.099749] invalid_op+0x1b/0x40 [ 40.107599] RSP: 0018:ffff8880b3417728 EFLAGS: 00010282 [ 40.111381] ? sysfs_warn_dup.cold+0x17/0x26 [ 40.125085] ? sysfs_warn_dup.cold+0x17/0x26 [ 40.131108] RAX: 000000000000003a RBX: ffff888097cd9a90 RCX: 0000000000000000 [ 40.131114] RDX: 0000000000000000 RSI: ffffffff878bd060 RDI: ffffed1016682edb [ 40.135934] ? sysfs_create_dir_ns+0x16f/0x1d0 [ 40.140920] RBP: ffff8880952ca4c0 R08: 000000000000003a R09: 0000000000000001 [ 40.144348] ? kobject_add_internal+0x28b/0x930 [ 40.149679] R10: 0000000000000000 R11: 0000000000000000 R12: ffff8880b11eda80 [ 40.154063] ? kobject_init_and_add+0xde/0x120 [ 40.158440] R13: ffff8880b53ad240 R14: ffff888097cd9a98 R15: ffff8880985e5a58 [ 40.165686] ? kobject_create_and_add+0x200/0x200 [ 40.172929] FS: 000055555615e300(0000) GS:ffff8880ba400000(0000) knlGS:0000000000000000 [ 40.177486] ? vsnprintf+0x260/0x1340 [ 40.184730] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 40.189382] ? gfs2_sys_fs_add+0x184/0x3f0 [ 40.196618] CR2: 00007f2626b24250 CR3: 000000009e006000 CR4: 00000000003406f0 [ 40.196626] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 40.201184] ? recover_store+0x100/0x100 [ 40.208422] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 40.208427] Call Trace: [ 40.213245] ? snprintf+0xa5/0xd0 [ 40.221445] sysfs_create_dir_ns+0x16f/0x1d0 [ 40.225218] ? strscpy+0x94/0x280 [ 40.231073] kobject_add_internal+0x28b/0x930 [ 40.235283] ? fill_super+0x118b/0x2310 [ 40.242530] kobject_init_and_add+0xde/0x120 [ 40.249776] ? vsnprintf+0x260/0x1340 [ 40.253808] ? kobject_create_and_add+0x200/0x200 [ 40.261053] ? gfs2_online_uevent+0x1b0/0x1b0 [ 40.263614] ? vsnprintf+0x260/0x1340 [ 40.267047] ? pointer+0x9e0/0x9e0 [ 40.271432] gfs2_sys_fs_add+0x184/0x3f0 [ 40.274856] ? snprintf+0xa5/0xd0 [ 40.279323] ? recover_store+0x100/0x100 [ 40.283267] ? vsprintf+0x30/0x30 [ 40.287649] ? snprintf+0xa5/0xd0 [ 40.291424] ? set_blocksize+0x125/0x380 [ 40.296241] ? strscpy+0x94/0x280 [ 40.300708] ? gfs2_mount+0x439/0x510 [ 40.304491] fill_super+0x118b/0x2310 [ 40.308006] ? fill_super+0x2310/0x2310 [ 40.312043] ? vsnprintf+0x260/0x1340 [ 40.315478] ? alloc_pages_current+0x15d/0x260 [ 40.319503] ? gfs2_online_uevent+0x1b0/0x1b0 [ 40.322929] ? __lockdep_init_map+0x100/0x560 [ 40.326351] ? pointer+0x9e0/0x9e0 [ 40.330384] ? mount_fs+0x92/0x2a0 [ 40.333811] ? snprintf+0xa5/0xd0 [ 40.337598] ? vfs_kern_mount.part.0+0x5b/0x470 [ 40.341378] ? vsprintf+0x30/0x30 [ 40.345327] ? do_mount+0xe65/0x2a30 [ 40.349105] ? set_blocksize+0x125/0x380 [ 40.353667] ? copy_mount_string+0x40/0x40 [ 40.358135] gfs2_mount+0x439/0x510 [ 40.362601] ? rcu_read_lock_sched_held+0x16c/0x1d0 [ 40.366111] ? fill_super+0x2310/0x2310 [ 40.369621] ? copy_mnt_ns+0xa30/0xa30 [ 40.373063] ? alloc_pages_current+0x15d/0x260 [ 40.377759] ? copy_mount_options+0x1fa/0x2f0 [ 40.381189] ? __lockdep_init_map+0x100/0x560 [ 40.384878] ? copy_mnt_ns+0xa30/0xa30 [ 40.388911] mount_fs+0x92/0x2a0 [ 40.393120] ? SyS_mount+0xa8/0x120 [ 40.396721] vfs_kern_mount.part.0+0x5b/0x470 [ 40.401967] ? copy_mnt_ns+0xa30/0xa30 [ 40.405913] do_mount+0xe65/0x2a30 [ 40.409776] ? do_syscall_64+0x1d5/0x640 [ 40.414422] ? copy_mount_string+0x40/0x40 [ 40.418890] ? entry_SYSCALL_64_after_hwframe+0x5e/0xd3 [ 40.423357] ? rcu_read_lock_sched_held+0x16c/0x1d0 [ 40.464571] ? copy_mnt_ns+0xa30/0xa30 [ 40.468450] ? copy_mount_options+0x1fa/0x2f0 [ 40.472929] ? copy_mnt_ns+0xa30/0xa30 [ 40.476800] SyS_mount+0xa8/0x120 [ 40.480237] ? copy_mnt_ns+0xa30/0xa30 [ 40.484106] do_syscall_64+0x1d5/0x640 [ 40.487980] entry_SYSCALL_64_after_hwframe+0x5e/0xd3 [ 40.493161] Code: 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 [ 40.512341] ---[ end trace 81a5b2e112478de3 ]--- [ 40.517231] Kernel Offset: disabled [ 40.520892] Rebooting in 86400 seconds..