Warning: Permanently added '10.128.0.136' (ECDSA) to the list of known hosts. syzkaller login: [ 29.555486] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 29.567165] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' [ 29.584199] ------------[ cut here ]------------ [ 29.588984] WARNING: CPU: 0 PID: 7972 at fs/sysfs/dir.c:30 sysfs_warn_dup.cold+0x17/0x26 [ 29.597205] Kernel panic - not syncing: panic_on_warn set ... [ 29.597205] [ 29.604560] CPU: 0 PID: 7972 Comm: syz-executor143 Not tainted 4.14.300-syzkaller #0 [ 29.612430] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 [ 29.612626] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' [ 29.621768] Call Trace: [ 29.621784] dump_stack+0x1b2/0x281 [ 29.621794] panic+0x1f9/0x42d [ 29.621801] ? add_taint.cold+0x16/0x16 [ 29.621811] ? sysfs_warn_dup.cold+0x17/0x26 [ 29.636561] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' [ 29.637815] ? sysfs_warn_dup.cold+0x17/0x26 [ 29.637828] __warn.cold+0x20/0x44 [ 29.637839] ? ist_end_non_atomic+0x10/0x10 [ 29.641917] ------------[ cut here ]------------ [ 29.646177] ? sysfs_warn_dup.cold+0x17/0x26 [ 29.652815] WARNING: CPU: 1 PID: 7976 at fs/sysfs/dir.c:30 sysfs_warn_dup.cold+0x17/0x26 [ 29.657197] report_bug+0x208/0x250 [ 29.660704] Modules linked in: [ 29.665007] do_error_trap+0x195/0x2d0 [ 29.669764] CPU: 1 PID: 7976 Comm: syz-executor143 Not tainted 4.14.300-syzkaller #0 [ 29.674137] ? math_error+0x2d0/0x2d0 [ 29.682423] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 [ 29.686026] ? ___preempt_schedule+0x16/0x18 [ 29.689188] task: ffff8880b315e1c0 task.stack: ffff8880b3d88000 [ 29.693055] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 29.700927] RIP: 0010:sysfs_warn_dup.cold+0x17/0x26 [ 29.704710] invalid_op+0x1b/0x40 [ 29.714120] RSP: 0018:ffff8880b3d8f728 EFLAGS: 00010282 [ 29.718524] ? sysfs_warn_dup.cold+0x17/0x26 [ 29.729372] ? sysfs_warn_dup.cold+0x17/0x26 [ 29.734366] RAX: 000000000000003a RBX: ffff888097235b90 RCX: 0000000000000000 [ 29.737795] ? sysfs_create_dir_ns+0x16f/0x1d0 [ 29.743128] RDX: 0000000000000000 RSI: ffffffff878bd060 RDI: ffffed10167b1edb [ 29.747518] ? kobject_add_internal+0x28b/0x930 [ 29.751896] RBP: ffff8880b1962600 R08: 000000000000003a R09: 0000000000000001 [ 29.759145] ? kobject_init_and_add+0xde/0x120 [ 29.763696] R10: 0000000000000000 R11: 0000000000000000 R12: ffff8880b08567e0 [ 29.770964] ? kobject_create_and_add+0x200/0x200 [ 29.775602] R13: ffff8880b610f080 R14: ffff888097235b98 R15: ffff8880b2d4db58 [ 29.782852] ? vsnprintf+0x260/0x1340 [ 29.787409] FS: 0000555557467300(0000) GS:ffff8880ba500000(0000) knlGS:0000000000000000 [ 29.794660] ? gfs2_sys_fs_add+0x184/0x3f0 [ 29.799468] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 29.806716] ? recover_store+0x100/0x100 [ 29.810483] CR2: 00007ffe34bafbe8 CR3: 00000000b3277000 CR4: 00000000003406e0 [ 29.810491] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 29.818693] ? snprintf+0xa5/0xd0 [ 29.822899] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 29.828760] ? strscpy+0x94/0x280 [ 29.832795] Call Trace: [ 29.840586] ? fill_super+0x118b/0x2310 [ 29.847836] sysfs_create_dir_ns+0x16f/0x1d0 [ 29.851264] ? vsnprintf+0x260/0x1340 [ 29.858511] kobject_add_internal+0x28b/0x930 [ 29.861936] ? gfs2_online_uevent+0x1b0/0x1b0 [ 29.864501] kobject_init_and_add+0xde/0x120 [ 29.868446] ? pointer+0x9e0/0x9e0 [ 29.872827] ? kobject_create_and_add+0x200/0x200 [ 29.876602] ? snprintf+0xa5/0xd0 [ 29.881069] ? vsnprintf+0x260/0x1340 [ 29.885646] ? vsprintf+0x30/0x30 [ 29.890033] gfs2_sys_fs_add+0x184/0x3f0 [ 29.893543] ? set_blocksize+0x125/0x380 [ 29.898394] ? recover_store+0x100/0x100 [ 29.901830] ? gfs2_mount+0x439/0x510 [ 29.905689] ? snprintf+0xa5/0xd0 [ 29.909121] ? fill_super+0x2310/0x2310 [ 29.913161] ? strscpy+0x94/0x280 [ 29.917204] ? alloc_pages_current+0x15d/0x260 [ 29.921318] fill_super+0x118b/0x2310 [ 29.925091] ? __lockdep_init_map+0x100/0x560 [ 29.928518] ? vsnprintf+0x260/0x1340 [ 29.932461] ? mount_fs+0x92/0x2a0 [ 29.935889] ? gfs2_online_uevent+0x1b0/0x1b0 [ 29.940443] ? vfs_kern_mount.part.0+0x5b/0x470 [ 29.944219] ? pointer+0x9e0/0x9e0 [ 29.948690] ? do_mount+0xe65/0x2a30 [ 29.952464] ? snprintf+0xa5/0xd0 [ 29.955973] ? do_raw_spin_unlock+0x164/0x220 [ 29.960449] ? vsprintf+0x30/0x30 [ 29.965094] ? copy_mount_string+0x40/0x40 [ 29.968615] ? set_blocksize+0x125/0x380 [ 29.972305] ? rcu_read_lock_sched_held+0x16c/0x1d0 [ 29.975733] gfs2_mount+0x439/0x510 [ 29.980196] ? copy_mnt_ns+0xa30/0xa30 [ 29.983618] ? fill_super+0x2310/0x2310 [ 29.987822] ? copy_mount_options+0x1fa/0x2f0 [ 29.991867] ? alloc_pages_current+0x15d/0x260 [ 29.996840] ? copy_mnt_ns+0xa30/0xa30 [ 30.000436] ? __lockdep_init_map+0x100/0x560 [ 30.004396] ? SyS_mount+0xa8/0x120 [ 30.008348] mount_fs+0x92/0x2a0 [ 30.012814] ? copy_mnt_ns+0xa30/0xa30 [ 30.012824] ? do_syscall_64+0x1d5/0x640 [ 30.017388] vfs_kern_mount.part.0+0x5b/0x470 [ 30.021248] ? entry_SYSCALL_64_after_hwframe+0x5e/0xd3 [ 30.026857] do_mount+0xe65/0x2a30 [ 30.055605] ? copy_mount_string+0x40/0x40 [ 30.059834] ? rcu_read_lock_sched_held+0x16c/0x1d0 [ 30.064831] ? copy_mnt_ns+0xa30/0xa30 [ 30.068702] ? copy_mount_options+0x1fa/0x2f0 [ 30.073181] ? copy_mnt_ns+0xa30/0xa30 [ 30.077057] SyS_mount+0xa8/0x120 [ 30.080491] ? copy_mnt_ns+0xa30/0xa30 [ 30.084362] do_syscall_64+0x1d5/0x640 [ 30.088467] entry_SYSCALL_64_after_hwframe+0x5e/0xd3 [ 30.093682] 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 [ 30.112864] ---[ end trace b3a6b543b5d3bc5c ]--- [ 30.117785] Kernel Offset: disabled [ 30.121473] Rebooting in 86400 seconds..