Warning: Permanently added '10.128.0.195' (ECDSA) to the list of known hosts. syzkaller login: [ 30.152510] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 30.163445] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' [ 30.176360] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' [ 30.188240] ------------[ cut here ]------------ [ 30.190657] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' [ 30.193008] WARNING: CPU: 1 PID: 8006 at fs/sysfs/dir.c:30 sysfs_warn_dup.cold+0x17/0x26 [ 30.193013] Kernel panic - not syncing: panic_on_warn set ... [ 30.193013] [ 30.193021] CPU: 1 PID: 8006 Comm: syz-executor235 Not tainted 4.14.302-syzkaller #0 [ 30.193025] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 [ 30.193028] Call Trace: [ 30.193037] dump_stack+0x1b2/0x281 [ 30.193046] panic+0x1f9/0x42d [ 30.193052] ? add_taint.cold+0x16/0x16 [ 30.193062] ? sysfs_warn_dup.cold+0x17/0x26 [ 30.193070] ? sysfs_warn_dup.cold+0x17/0x26 [ 30.193076] __warn.cold+0x20/0x44 [ 30.193084] ? ist_end_non_atomic+0x10/0x10 [ 30.193090] ? sysfs_warn_dup.cold+0x17/0x26 [ 30.193098] report_bug+0x208/0x250 [ 30.193107] do_error_trap+0x195/0x2d0 [ 30.193116] ? math_error+0x2d0/0x2d0 [ 30.212756] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' [ 30.215354] ? ___preempt_schedule+0x16/0x18 [ 30.215366] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 30.215377] invalid_op+0x1b/0x40 [ 30.223528] ------------[ cut here ]------------ [ 30.232590] RIP: 0010:sysfs_warn_dup.cold+0x17/0x26 [ 30.235148] WARNING: CPU: 0 PID: 8004 at fs/sysfs/dir.c:30 sysfs_warn_dup.cold+0x17/0x26 [ 30.238742] RSP: 0018:ffff888095917728 EFLAGS: 00010282 [ 30.241910] Modules linked in: [ 30.245864] RAX: 000000000000003a RBX: ffff8880950d1d50 RCX: 0000000000000000 [ 30.254710] RDX: 0000000000000000 RSI: ffffffff878bd020 RDI: ffffed1012b22edb [ 30.258223] CPU: 0 PID: 8004 Comm: syz-executor235 Not tainted 4.14.302-syzkaller #0 [ 30.262524] RBP: ffff88809563c640 R08: 000000000000003a R09: 0000000000000000 [ 30.266919] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 [ 30.270521] R10: 0000000000000000 R11: 0000000000000000 R12: ffff8880b0fca000 [ 30.274380] task: ffff8880b2f58540 task.stack: ffff8880b3110000 [ 30.278154] R13: ffff8880af297400 R14: ffff8880950d1d58 R15: ffff88809c5d1d18 [ 30.278170] ? sysfs_warn_dup.cold+0x17/0x26 [ 30.284892] RIP: 0010:sysfs_warn_dup.cold+0x17/0x26 [ 30.289277] sysfs_create_dir_ns+0x16f/0x1d0 [ 30.294088] RSP: 0018:ffff8880b3117728 EFLAGS: 00010282 [ 30.297523] kobject_add_internal+0x28b/0x930 [ 30.307624] kobject_init_and_add+0xde/0x120 [ 30.315821] RAX: 000000000000003a RBX: ffff888095051dd0 RCX: 0000000000000000 [ 30.321169] ? kobject_create_and_add+0x200/0x200 [ 30.324333] RDX: 0000000000000000 RSI: ffffffff878bd020 RDI: ffffed1016622edb [ 30.331613] ? vsnprintf+0x260/0x1340 [ 30.338863] RBP: ffff8880b414ea80 R08: 000000000000003a R09: 0000000000000001 [ 30.346828] gfs2_sys_fs_add+0x184/0x3f0 [ 30.354072] R10: 0000000000000000 R11: 0000000000000000 R12: ffff8880b0fca000 [ 30.363455] ? recover_store+0x100/0x100 [ 30.370698] R13: ffff8880af6f5740 R14: ffff888095051dd8 R15: ffff8880b1e95d98 [ 30.376728] ? snprintf+0xa5/0xd0 [ 30.383982] FS: 0000555557145300(0000) GS:ffff8880ba400000(0000) knlGS:0000000000000000 [ 30.388372] ? strscpy+0x94/0x280 [ 30.393364] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 30.397746] fill_super+0x118b/0x2310 [ 30.403078] CR2: 00007fa8b2d71f90 CR3: 00000000b1dbd000 CR4: 00000000003406f0 [ 30.407550] ? vsnprintf+0x260/0x1340 [ 30.411931] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 30.419179] ? gfs2_online_uevent+0x1b0/0x1b0 [ 30.423989] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 30.431240] ? pointer+0x9e0/0x9e0 [ 30.435007] Call Trace: [ 30.442256] ? snprintf+0xa5/0xd0 [ 30.446291] sysfs_create_dir_ns+0x16f/0x1d0 [ 30.453540] ? vsprintf+0x30/0x30 [ 30.457572] kobject_add_internal+0x28b/0x930 [ 30.464912] ? gfs2_open+0x160/0x160 [ 30.468369] kobject_init_and_add+0xde/0x120 [ 30.476562] ? set_blocksize+0x125/0x380 [ 30.479993] ? kobject_create_and_add+0x200/0x200 [ 30.485849] gfs2_mount+0x439/0x510 [ 30.489617] ? vsnprintf+0x260/0x1340 [ 30.496864] ? fill_super+0x2310/0x2310 [ 30.500650] gfs2_sys_fs_add+0x184/0x3f0 [ 30.507905] ? alloc_pages_current+0x15d/0x260 [ 30.512363] ? recover_store+0x100/0x100 [ 30.519606] ? __lockdep_init_map+0x100/0x560 [ 30.523128] ? snprintf+0xa5/0xd0 [ 30.525700] mount_fs+0x92/0x2a0 [ 30.529137] ? strscpy+0x94/0x280 [ 30.533608] vfs_kern_mount.part.0+0x5b/0x470 [ 30.537044] fill_super+0x118b/0x2310 [ 30.541516] do_mount+0xe65/0x2a30 [ 30.545206] ? vsnprintf+0x260/0x1340 [ 30.549590] ? copy_mount_string+0x40/0x40 [ 30.553620] ? gfs2_online_uevent+0x1b0/0x1b0 [ 30.558440] ? rcu_read_lock_sched_held+0x16c/0x1d0 [ 30.562036] ? pointer+0x9e0/0x9e0 [ 30.565808] ? copy_mnt_ns+0xa30/0xa30 [ 30.569755] ? snprintf+0xa5/0xd0 [ 30.573787] ? copy_mount_options+0x1fa/0x2f0 [ 30.578342] ? vsprintf+0x30/0x30 [ 30.582489] ? copy_mnt_ns+0xa30/0xa30 [ 30.587404] ? gfs2_open+0x160/0x160 [ 30.590836] SyS_mount+0xa8/0x120 [ 30.594178] ? set_blocksize+0x125/0x380 [ 30.597862] ? copy_mnt_ns+0xa30/0xa30 [ 30.602766] gfs2_mount+0x439/0x510 [ 30.606714] do_syscall_64+0x1d5/0x640 [ 30.610223] ? fill_super+0x2310/0x2310 [ 30.614000] entry_SYSCALL_64_after_hwframe+0x5e/0xd3 [ 30.618216] ? alloc_pages_current+0x15d/0x260 [ 30.622670] RIP: 0033:0x7fa8b2d9e6da [ 30.627668] ? __lockdep_init_map+0x100/0x560 [ 30.631178] RSP: 002b:00007ffeae848d68 EFLAGS: 00000282 [ 30.635044] mount_fs+0x92/0x2a0 [ 30.638462] ORIG_RAX: 00000000000000a5 [ 30.638468] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007fa8b2d9e6da [ 30.642936] vfs_kern_mount.part.0+0x5b/0x470 [ 30.646358] RDX: 0000000020000000 RSI: 0000000020000080 RDI: 00007ffeae848d80 [ 30.650221] do_mount+0xe65/0x2a30 [ 30.653904] RBP: 00007ffeae848d80 R08: 00007ffeae848dc0 R09: 0000000000000002 [ 30.657339] ? do_raw_spin_unlock+0x164/0x220 [ 30.661380] R10: 0000000000000000 R11: 0000000000000282 R12: 0000000000000004 [ 30.665244] ? copy_mount_string+0x40/0x40 [ 30.668864] R13: 00005555571452c0 R14: 0000000000000000 R15: 00007ffeae848dc0 [ 30.672733] ? rcu_read_lock_sched_held+0x16c/0x1d0 [ 30.765303] ? copy_mnt_ns+0xa30/0xa30 [ 30.769170] ? copy_mount_options+0x1fa/0x2f0 [ 30.773731] ? copy_mnt_ns+0xa30/0xa30 [ 30.777598] SyS_mount+0xa8/0x120 [ 30.781045] ? copy_mnt_ns+0xa30/0xa30 [ 30.784932] do_syscall_64+0x1d5/0x640 [ 30.788811] entry_SYSCALL_64_after_hwframe+0x5e/0xd3 [ 30.793990] RIP: 0033:0x7fa8b2d9e6da [ 30.797703] RSP: 002b:00007ffeae848d68 EFLAGS: 00000282 ORIG_RAX: 00000000000000a5 [ 30.805456] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007fa8b2d9e6da [ 30.812703] RDX: 0000000020000000 RSI: 0000000020000080 RDI: 00007ffeae848d80 [ 30.819950] RBP: 00007ffeae848d80 R08: 00007ffeae848dc0 R09: 0000000000000002 [ 30.827295] R10: 0000000000000000 R11: 0000000000000282 R12: 0000000000000004 [ 30.834565] R13: 00005555571452c0 R14: 0000000000000000 R15: 00007ffeae848dc0 [ 30.841916] 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 [ 30.861176] ---[ end trace 0ec5c750ccc9958e ]--- [ 30.866112] Kernel Offset: disabled [ 30.869762] Rebooting in 86400 seconds..