------------[ cut here ]------------ WARNING: CPU: 1 PID: 7073 at fs/kernfs/dir.c:504 kernfs_get fs/kernfs/dir.c:504 [inline] WARNING: CPU: 1 PID: 7073 at fs/kernfs/dir.c:504 __kernfs_remove+0x6f4/0x7d8 fs/kernfs/dir.c:1377 Modules linked in: CPU: 1 PID: 7073 Comm: syz-executor.1 Not tainted 6.0.0-rc7-syzkaller-18095-gbbed346d5a96 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/30/2022 pstate: 80400005 (Nzcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : kernfs_get fs/kernfs/dir.c:504 [inline] pc : __kernfs_remove+0x6f4/0x7d8 fs/kernfs/dir.c:1377 lr : kernfs_get fs/kernfs/dir.c:504 [inline] lr : __kernfs_remove+0x6f4/0x7d8 fs/kernfs/dir.c:1377 sp : ffff80001fb238a0 x29: ffff80001fb238d0 x28: ffff80000cee8161 x27: 0000000080000001 x26: ffff0000c0011a00 x25: ffff80000d30c000 x24: ffff000120ff7930 x23: ffff00011e0fba18 x22: 0000000000000000 x21: ffff000120ff7930 x20: ffff000120ff7930 x19: ffff8000086f7744 x18: 00000000000002c8 x17: ffff80000bffd6bc x16: ffff80000db49158 x15: ffff00011d0a0000 x14: 0000000000000000 x13: 00000000ffffffff x12: 0000000000040000 x11: 0000000000007253 x10: ffff8000128d5000 x9 : ffff8000086f70dc x8 : 0000000000007254 x7 : ffff8000095d331c x6 : 0000000000000000 x5 : 000000008018000f x4 : fffffc000483fde0 x3 : 000000008018000f x2 : ffff000120ff7930 x1 : 0000000000000000 x0 : 0000000000000000 Call trace: kernfs_get fs/kernfs/dir.c:504 [inline] __kernfs_remove+0x6f4/0x7d8 fs/kernfs/dir.c:1377 kernfs_remove_by_name_ns+0x68/0xb8 fs/kernfs/dir.c:1589 kernfs_remove_by_name include/linux/kernfs.h:615 [inline] sysfs_remove_link+0x40/0x50 fs/sysfs/symlink.c:152 sysfs_slab_add+0x70/0x274 mm/slub.c:5955 __kmem_cache_create+0x60/0x118 mm/slub.c:4906 create_cache mm/slab_common.c:229 [inline] kmem_cache_create_usercopy+0x19c/0x31c mm/slab_common.c:335 p9_client_create+0x618/0x758 net/9p/client.c:993 v9fs_session_init+0xa4/0x9f0 fs/9p/v9fs.c:408 v9fs_mount+0x6c/0x568 fs/9p/vfs_super.c:126 legacy_get_tree+0x30/0x74 fs/fs_context.c:610 vfs_get_tree+0x40/0x140 fs/super.c:1530 do_new_mount+0x1dc/0x4e4 fs/namespace.c:3040 path_mount+0x358/0x914 fs/namespace.c:3370 do_mount fs/namespace.c:3383 [inline] __do_sys_mount fs/namespace.c:3591 [inline] __se_sys_mount fs/namespace.c:3568 [inline] __arm64_sys_mount+0x2c4/0x3c4 fs/namespace.c:3568 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall arch/arm64/kernel/syscall.c:52 [inline] el0_svc_common+0x138/0x220 arch/arm64/kernel/syscall.c:142 do_el0_svc+0x48/0x164 arch/arm64/kernel/syscall.c:206 el0_svc+0x58/0x150 arch/arm64/kernel/entry-common.c:636 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:654 el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:581 irq event stamp: 1336 hardirqs last enabled at (1335): [] __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:151 [inline] hardirqs last enabled at (1335): [] _raw_spin_unlock_irqrestore+0x48/0x8c kernel/locking/spinlock.c:194 hardirqs last disabled at (1336): [] el1_dbg+0x24/0x5c arch/arm64/kernel/entry-common.c:404 softirqs last enabled at (1066): [] local_bh_enable+0x10/0x34 include/linux/bottom_half.h:32 softirqs last disabled at (1064): [] local_bh_disable+0x10/0x34 include/linux/bottom_half.h:19 ---[ end trace 0000000000000000 ]--- sysfs: cannot create duplicate filename '/kernel/slab/9p-fcall-cache/align' CPU: 0 PID: 7073 Comm: syz-executor.1 Tainted: G W 6.0.0-rc7-syzkaller-18095-gbbed346d5a96 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/30/2022 Call trace: dump_backtrace+0x1c4/0x1f0 arch/arm64/kernel/stacktrace.c:156 show_stack+0x2c/0x54 arch/arm64/kernel/stacktrace.c:163 __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x104/0x16c lib/dump_stack.c:106 dump_stack+0x1c/0x58 lib/dump_stack.c:113 sysfs_warn_dup+0x74/0x90 fs/sysfs/dir.c:30 sysfs_add_file_mode_ns+0x158/0x1b4 fs/sysfs/file.c:298 create_files fs/sysfs/group.c:64 [inline] internal_create_group+0x22c/0x654 fs/sysfs/group.c:148 sysfs_create_group+0x2c/0x3c fs/sysfs/group.c:174 sysfs_slab_add+0x15c/0x274 mm/slub.c:5972 __kmem_cache_create+0x60/0x118 mm/slub.c:4906 create_cache mm/slab_common.c:229 [inline] kmem_cache_create_usercopy+0x19c/0x31c mm/slab_common.c:335 p9_client_create+0x618/0x758 net/9p/client.c:993 v9fs_session_init+0xa4/0x9f0 fs/9p/v9fs.c:408 v9fs_mount+0x6c/0x568 fs/9p/vfs_super.c:126 legacy_get_tree+0x30/0x74 fs/fs_context.c:610 vfs_get_tree+0x40/0x140 fs/super.c:1530 do_new_mount+0x1dc/0x4e4 fs/namespace.c:3040 path_mount+0x358/0x914 fs/namespace.c:3370 do_mount fs/namespace.c:3383 [inline] __do_sys_mount fs/namespace.c:3591 [inline] __se_sys_mount fs/namespace.c:3568 [inline] __arm64_sys_mount+0x2c4/0x3c4 fs/namespace.c:3568 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall arch/arm64/kernel/syscall.c:52 [inline] el0_svc_common+0x138/0x220 arch/arm64/kernel/syscall.c:142 do_el0_svc+0x48/0x164 arch/arm64/kernel/syscall.c:206 el0_svc+0x58/0x150 arch/arm64/kernel/entry-common.c:636 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:654 el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:581