WARNING: CPU: 0 PID: 10143 at fs/sysfs/group.c:116 internal_create_group+0x90b/0xb30 fs/sysfs/group.c:116 Modules linked in: CPU: 0 PID: 10143 Comm: syz-executor.6 Not tainted 5.10.244 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:internal_create_group+0x90b/0xb30 fs/sysfs/group.c:116 Code: 0f 85 e8 f7 ff ff 41 be ea ff ff ff e9 32 fd ff ff e8 a9 88 ae ff 48 8b 7c 24 08 e8 9f 11 ff ff e9 1e fd ff ff e8 95 88 ae ff <0f> 0b 41 be ea ff ff ff e9 0c fd ff ff e8 83 88 ae ff 48 8b 14 24 RSP: 0018:ffff88805caff538 EFLAGS: 00010212 RAX: 000000000000609e RBX: 0000000000000000 RCX: ffffc90002bf1000 RDX: 0000000000040000 RSI: ffffffff8192499b RDI: 0000000000000005 RBP: ffff88801b244068 R08: 0000000000000001 R09: ffffffff868706df R10: 0000000000000000 R11: 0000000000000001 R12: 0000000000000000 R13: ffff88801b244000 R14: ffff88801b244098 R15: ffff88801b244068 FS: 00007fdc306fe700(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f4eadab1541 CR3: 0000000017d78000 CR4: 0000000000350ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 000000000ddd062a Call Trace: blk_register_queue+0xfd/0x520 block/blk-sysfs.c:877 __device_add_disk+0xe59/0x1140 block/genhd.c:825 add_disk include/linux/genhd.h:295 [inline] loop_add+0x61d/0x8b0 drivers/block/loop.c:2168 loop_probe+0x162/0x1a0 drivers/block/loop.c:2240 kobj_lookup+0x26d/0x470 drivers/base/map.c:124 get_gendisk+0x60/0x390 block/genhd.c:998 bdev_get_gendisk fs/block_dev.c:1115 [inline] __blkdev_get+0x344/0x1660 fs/block_dev.c:1479 blkdev_get fs/block_dev.c:1658 [inline] blkdev_open+0x227/0x300 fs/block_dev.c:1775 do_dentry_open+0x4b7/0x1090 fs/open.c:817 do_open fs/namei.c:3307 [inline] path_openat+0x19ba/0x2770 fs/namei.c:3425 do_filp_open+0x190/0x3e0 fs/namei.c:3452 do_sys_openat2+0x171/0x4d0 fs/open.c:1227 do_sys_open fs/open.c:1243 [inline] __do_sys_creat fs/open.c:1319 [inline] __se_sys_creat fs/open.c:1313 [inline] __x64_sys_creat+0xc9/0x120 fs/open.c:1313 do_syscall_64+0x33/0x40 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x67/0xd1 RIP: 0033:0x7fdc33188b19 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fdc306fe188 EFLAGS: 00000246 ORIG_RAX: 0000000000000055 RAX: ffffffffffffffda RBX: 00007fdc3329bf60 RCX: 00007fdc33188b19 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000020000440 RBP: 00007fdc331e2f6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffe738b21af R14: 00007fdc306fe300 R15: 0000000000022000 irq event stamp: 1861 hardirqs last enabled at (1871): [] console_unlock+0x92d/0xb40 kernel/printk/printk.c:2567 hardirqs last disabled at (1880): [] console_unlock+0x839/0xb40 kernel/printk/printk.c:2482 softirqs last enabled at (1046): [] asm_call_irq_on_stack+0x12/0x20 softirqs last disabled at (989): [] asm_call_irq_on_stack+0x12/0x20 ---[ end trace eb02d2cece5d2bb7 ]--- ------------[ cut here ]------------ WARNING: CPU: 0 PID: 10143 at fs/sysfs/file.c:328 sysfs_create_file_ns+0x13c/0x1d0 fs/sysfs/file.c:328 Modules linked in: CPU: 0 PID: 10143 Comm: syz-executor.6 Tainted: G W 5.10.244 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:sysfs_create_file_ns+0x13c/0x1d0 fs/sysfs/file.c:328 Code: 85 86 00 00 00 41 55 48 8b 7b 30 31 d2 48 89 ee 44 8b 4c 24 50 44 8b 44 24 40 e8 6f f9 ff ff 41 89 c5 58 eb 0d e8 74 b1 ae ff <0f> 0b 41 bd ea ff ff ff e8 67 b1 ae ff 48 b8 00 00 00 00 00 fc ff RSP: 0018:ffff88805caff568 EFLAGS: 00010212 RAX: 0000000000030f0c RBX: ffff88801b244068 RCX: ffffc90002bf1000 RDX: 0000000000040000 RSI: ffffffff819220bc RDI: ffff88801b244068 RBP: ffffffff845b1ee0 R08: 0000000000000001 R09: ffff88800f080d0b R10: 0000000000000000 R11: 0000000000000001 R12: 1ffff1100b95feae R13: 0000000000000000 R14: dffffc0000000000 R15: ffff88801b244098 FS: 00007fdc306fe700(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f4eadab1541 CR3: 0000000017d78000 CR4: 0000000000350ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 000000000ddd062a Call Trace: sysfs_create_file include/linux/sysfs.h:599 [inline] sysfs_create_files+0x6a/0x1c0 fs/sysfs/file.c:344 disk_add_events block/genhd.c:2328 [inline] __device_add_disk+0x911/0x1140 block/genhd.c:833 add_disk include/linux/genhd.h:295 [inline] loop_add+0x61d/0x8b0 drivers/block/loop.c:2168 loop_probe+0x162/0x1a0 drivers/block/loop.c:2240 kobj_lookup+0x26d/0x470 drivers/base/map.c:124 get_gendisk+0x60/0x390 block/genhd.c:998 bdev_get_gendisk fs/block_dev.c:1115 [inline] __blkdev_get+0x344/0x1660 fs/block_dev.c:1479 blkdev_get fs/block_dev.c:1658 [inline] blkdev_open+0x227/0x300 fs/block_dev.c:1775 do_dentry_open+0x4b7/0x1090 fs/open.c:817 do_open fs/namei.c:3307 [inline] path_openat+0x19ba/0x2770 fs/namei.c:3425 do_filp_open+0x190/0x3e0 fs/namei.c:3452 do_sys_openat2+0x171/0x4d0 fs/open.c:1227 do_sys_open fs/open.c:1243 [inline] __do_sys_creat fs/open.c:1319 [inline] __se_sys_creat fs/open.c:1313 [inline] __x64_sys_creat+0xc9/0x120 fs/open.c:1313 do_syscall_64+0x33/0x40 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x67/0xd1 RIP: 0033:0x7fdc33188b19 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fdc306fe188 EFLAGS: 00000246 ORIG_RAX: 0000000000000055 RAX: ffffffffffffffda RBX: 00007fdc3329bf60 RCX: 00007fdc33188b19 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000020000440 RBP: 00007fdc331e2f6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffe738b21af R14: 00007fdc306fe300 R15: 0000000000022000 irq event stamp: 2809 hardirqs last enabled at (2817): [] console_unlock+0x92d/0xb40 kernel/printk/printk.c:2567 hardirqs last disabled at (2830): [] console_unlock+0x839/0xb40 kernel/printk/printk.c:2482 softirqs last enabled at (1046): [] asm_call_irq_on_stack+0x12/0x20 softirqs last disabled at (989): [] asm_call_irq_on_stack+0x12/0x20 ---[ end trace eb02d2cece5d2bb8 ]--- ------------[ cut here ]------------ kernfs: can not remove 'events', no directory WARNING: CPU: 0 PID: 10143 at fs/kernfs/dir.c:1528 kernfs_remove_by_name_ns+0xb0/0xc0 fs/kernfs/dir.c:1528 Modules linked in: CPU: 0 PID: 10143 Comm: syz-executor.6 Tainted: G W 5.10.244 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:kernfs_remove_by_name_ns+0xb0/0xc0 fs/kernfs/dir.c:1528 Code: af ff 48 c7 c7 e0 f7 0d 85 41 bc fe ff ff ff e8 c6 2d 57 02 eb d5 e8 ef 2d af ff 4c 89 e6 48 c7 c7 60 35 51 84 e8 ad 27 49 02 <0f> 0b 41 bc fe ff ff ff eb b7 66 0f 1f 44 00 00 41 57 41 56 41 55 RSP: 0018:ffff88805caff608 EFLAGS: 00010286 RAX: 0000000000000000 RBX: 00000000ffffffff RCX: 0000000000000000 RDX: 0000000000040000 RSI: ffffffff8129f743 RDI: ffffed100b95feb3 RBP: 0000000000000000 R08: 0000000000000001 R09: ffff88806ce37b0f R10: 0000000000000000 R11: 0000000000000001 R12: ffffffff845b1ea0 R13: 0000000000000000 R14: dffffc0000000000 R15: ffffed1003648813 FS: 00007fdc306fe700(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f4eadab1541 CR3: 0000000017d78000 CR4: 0000000000350ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 000000000ddd062a Call Trace: sysfs_remove_file_ns fs/sysfs/file.c:472 [inline] sysfs_remove_file include/linux/sysfs.h:605 [inline] sysfs_create_files+0x143/0x1c0 fs/sysfs/file.c:347 disk_add_events block/genhd.c:2328 [inline] __device_add_disk+0x911/0x1140 block/genhd.c:833 add_disk include/linux/genhd.h:295 [inline] loop_add+0x61d/0x8b0 drivers/block/loop.c:2168 loop_probe+0x162/0x1a0 drivers/block/loop.c:2240 kobj_lookup+0x26d/0x470 drivers/base/map.c:124 get_gendisk+0x60/0x390 block/genhd.c:998 bdev_get_gendisk fs/block_dev.c:1115 [inline] __blkdev_get+0x344/0x1660 fs/block_dev.c:1479 blkdev_get fs/block_dev.c:1658 [inline] blkdev_open+0x227/0x300 fs/block_dev.c:1775 do_dentry_open+0x4b7/0x1090 fs/open.c:817 do_open fs/namei.c:3307 [inline] path_openat+0x19ba/0x2770 fs/namei.c:3425 do_filp_open+0x190/0x3e0 fs/namei.c:3452 do_sys_openat2+0x171/0x4d0 fs/open.c:1227 do_sys_open fs/open.c:1243 [inline] __do_sys_creat fs/open.c:1319 [inline] __se_sys_creat fs/open.c:1313 [inline] __x64_sys_creat+0xc9/0x120 fs/open.c:1313 do_syscall_64+0x33/0x40 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x67/0xd1 RIP: 0033:0x7fdc33188b19 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fdc306fe188 EFLAGS: 00000246 ORIG_RAX: 0000000000000055 RAX: ffffffffffffffda RBX: 00007fdc3329bf60 RCX: 00007fdc33188b19 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000020000440 RBP: 00007fdc331e2f6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffe738b21af R14: 00007fdc306fe300 R15: 0000000000022000 irq event stamp: 3779 hardirqs last enabled at (3791): [] console_unlock+0x92d/0xb40 kernel/printk/printk.c:2567 hardirqs last disabled at (3802): [] console_unlock+0x839/0xb40 kernel/printk/printk.c:2482 softirqs last enabled at (1046): [] asm_call_irq_on_stack+0x12/0x20 softirqs last disabled at (989): [] asm_call_irq_on_stack+0x12/0x20 ---[ end trace eb02d2cece5d2bb9 ]--- loop12: failed to create sysfs files for events