FAT-fs (loop0): Directory bread(block 9) failed
------------[ cut here ]------------
WARNING: fs/namespace.c:1434 at mntput_no_expire+0x78e/0xbe0, CPU#1: syz-executor.3/287
Modules linked in:
CPU: 1 UID: 0 PID: 287 Comm: syz-executor.3 Tainted: G W 6.17.0-rc3-next-20250829 #1 PREEMPT(voluntary)
Tainted: [W]=WARN
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014
RIP: 0010:mntput_no_expire+0x78e/0xbe0
Code: 05 16 42 81 04 01 e8 31 f8 91 ff e9 41 fc ff ff e8 b7 50 b4 ff 31 ff 44 89 ee e8 dd 4b b4 ff 45 85 ed 79 09 e8 a3 50 b4 ff 90 <0f> 0b 90 e8 9a 50 b4 ff e8 75 f6 fb 02 31 ff 89 c5 89 c6 e8 ba 4b
RSP: 0018:ffff88801674fc00 EFLAGS: 00010293
RAX: 0000000000000000 RBX: 1ffff11002ce9f85 RCX: ffffffff81bf96d3
RDX: ffff8880179c8000 RSI: ffffffff81bf96dd RDI: 0000000000000005
RBP: ffff88800e764000 R08: 0000000000000001 R09: 0000000000000000
R10: 00000000ffffffff R11: 0000000000000001 R12: ffff88801674fc68
R13: 00000000ffffffff R14: dead000000000100 R15: ffff88800e764000
FS: 000055555ee53400(0000) GS:ffff8880e56dd000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffc27649f78 CR3: 0000000044d98000 CR4: 0000000000350ef0
Call Trace:
namespace_unlock+0x7f1/0x810
path_umount+0x6a4/0x1100
__x64_sys_umount+0x15c/0x190
do_syscall_64+0xbf/0x360
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f4730b01f87
Code: ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 66 0f 1f 44 00 00 31 f6 e9 09 00 00 00 66 0f 1f 84 00 00 00 00 00 b8 a6 00 00 00 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:00007ffc2764a6b8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
RAX: ffffffffffffffda RBX: 0000000000000008 RCX: 00007f4730b01f87
RDX: 00007ffc2764a789 RSI: 000000000000000a RDI: 00007ffc2764a780
RBP: 00007ffc2764a780 R08: 00000000ffffffff R09: 00007ffc2764a550
R10: 000055555ee54c7b R11: 0000000000000246 R12: 00007f4730b5a105
R13: 00007ffc2764b840 R14: 000055555ee54c20 R15: 00007ffc2764b880
irq event stamp: 159939
hardirqs last enabled at (159947): [] __up_console_sem+0x78/0x80
hardirqs last disabled at (159956): [] __up_console_sem+0x5d/0x80
softirqs last enabled at (159530): [] handle_softirqs+0x50c/0x770
softirqs last disabled at (159515): [] __irq_exit_rcu+0xc4/0x100
---[ end trace 0000000000000000 ]---
kmemleak: Found object by alias at 0x607f1a638eec
CPU: 0 UID: 0 PID: 3978 Comm: syz-executor.2 Tainted: G W 6.17.0-rc3-next-20250829 #1 PREEMPT(voluntary)
Tainted: [W]=WARN
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014
Call Trace:
dump_stack_lvl+0xca/0x120
__lookup_object+0x94/0xb0
delete_object_full+0x27/0x70
free_percpu+0x30/0x1160
futex_hash_free+0x38/0xc0
mmput+0x2d3/0x390
do_exit+0x79d/0x2970
do_group_exit+0xd3/0x2a0
__x64_sys_exit_group+0x3e/0x50
x64_sys_call+0x18c5/0x18d0
do_syscall_64+0xbf/0x360
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fa595fadb19
Code: Unable to access opcode bytes at 0x7fa595fadaef.
RSP: 002b:00007ffe01b89cc8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 000000000000001e RCX: 00007fa595fadb19
RDX: 00007fa595f6072b RSI: ffffffffffffffbc RDI: 0000000000000000
RBP: 0000000000000000 R08: 00007fa5960c5b58 R09: 0000000000000001
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001
R13: 0000000000000001 R14: 0000000000000001 R15: 00007ffe01b89db0
kmemleak: Object (percpu) 0x607f1a638ee8 (size 8):
kmemleak: comm "syz-executor.4", pid 3963, jiffies 4294787683
kmemleak: min_count = 1
kmemleak: count = 0
kmemleak: flags = 0x21
kmemleak: checksum = 0
kmemleak: backtrace:
pcpu_alloc_noprof+0x87a/0x1170
percpu_ref_init+0x37/0x400
ioctx_alloc+0x368/0x1e10
__x64_sys_io_setup+0xc8/0x1f0
do_syscall_64+0xbf/0x360
entry_SYSCALL_64_after_hwframe+0x77/0x7f
------------[ cut here ]------------
WARNING: fs/namespace.c:1434 at mntput_no_expire+0x78e/0xbe0, CPU#1: syz-executor.3/287
Modules linked in:
CPU: 1 UID: 0 PID: 287 Comm: syz-executor.3 Tainted: G W 6.17.0-rc3-next-20250829 #1 PREEMPT(voluntary)
Tainted: [W]=WARN
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014
RIP: 0010:mntput_no_expire+0x78e/0xbe0
Code: 05 16 42 81 04 01 e8 31 f8 91 ff e9 41 fc ff ff e8 b7 50 b4 ff 31 ff 44 89 ee e8 dd 4b b4 ff 45 85 ed 79 09 e8 a3 50 b4 ff 90 <0f> 0b 90 e8 9a 50 b4 ff e8 75 f6 fb 02 31 ff 89 c5 89 c6 e8 ba 4b
RSP: 0018:ffff88801674fce0 EFLAGS: 00010293
RAX: 0000000000000000 RBX: 1ffff11002ce9fa1 RCX: ffffffff81bf96d3
RDX: ffff8880179c8000 RSI: ffffffff81bf96dd RDI: 0000000000000005
RBP: ffff88800e764000 R08: 0000000000000001 R09: 0000000000000000
R10: 00000000fffffffe R11: 0000000000000001 R12: ffff88801674fd48
R13: 00000000fffffffe R14: ffff88800e764000 R15: ffff88800e7640e8
FS: 000055555ee53400(0000) GS:ffff8880e56dd000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f52880380c8 CR3: 0000000044d98000 CR4: 0000000000350ef0
Call Trace:
path_umount+0x6e0/0x1100
__x64_sys_umount+0x15c/0x190
do_syscall_64+0xbf/0x360
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f4730b01f87
Code: ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 66 0f 1f 44 00 00 31 f6 e9 09 00 00 00 66 0f 1f 84 00 00 00 00 00 b8 a6 00 00 00 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:00007ffc2764a6b8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
RAX: ffffffffffffffda RBX: 0000000000000008 RCX: 00007f4730b01f87
RDX: 00007ffc2764a789 RSI: 000000000000000a RDI: 00007ffc2764a780
RBP: 00007ffc2764a780 R08: 00000000ffffffff R09: 00007ffc2764a550
R10: 000055555ee54c7b R11: 0000000000000246 R12: 00007f4730b5a105
R13: 00007ffc2764b840 R14: 000055555ee54c20 R15: 00007ffc2764b880
irq event stamp: 160493
hardirqs last enabled at (160503): [] __up_console_sem+0x78/0x80
hardirqs last disabled at (160512): [] __up_console_sem+0x5d/0x80
softirqs last enabled at (160190): [] handle_softirqs+0x50c/0x770
softirqs last disabled at (160185): [] __irq_exit_rcu+0xc4/0x100
---[ end trace 0000000000000000 ]---
kmemleak: Found object by alias at 0x607f1a638eec
CPU: 1 UID: 0 PID: 49 Comm: kworker/1:1 Tainted: G W 6.17.0-rc3-next-20250829 #1 PREEMPT(voluntary)
Tainted: [W]=WARN
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014
Workqueue: events destroy_super_work
Call Trace:
dump_stack_lvl+0xca/0x120
__lookup_object+0x94/0xb0
delete_object_full+0x27/0x70
free_percpu+0x30/0x1160
percpu_free_rwsem+0x53/0xa0
destroy_super_work+0xe3/0x150
process_one_work+0x8e1/0x19c0
worker_thread+0x67e/0xe90
kthread+0x3c8/0x740
ret_from_fork+0x34b/0x430
ret_from_fork_asm+0x1a/0x30
kmemleak: Object (percpu) 0x607f1a638ee8 (size 8):
kmemleak: comm "syz-executor.4", pid 3963, jiffies 4294787683
kmemleak: min_count = 1
kmemleak: count = 0
kmemleak: flags = 0x21
kmemleak: checksum = 0
kmemleak: backtrace:
pcpu_alloc_noprof+0x87a/0x1170
percpu_ref_init+0x37/0x400
ioctx_alloc+0x368/0x1e10
__x64_sys_io_setup+0xc8/0x1f0
do_syscall_64+0xbf/0x360
entry_SYSCALL_64_after_hwframe+0x77/0x7f
isofs_fill_super: root inode is not a directory. Corrupted media?
kmemleak: Found object by alias at 0x607f1a638eec
CPU: 1 UID: 0 PID: 49 Comm: kworker/1:1 Tainted: G W 6.17.0-rc3-next-20250829 #1 PREEMPT(voluntary)
Tainted: [W]=WARN
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014
Workqueue: events destroy_super_work
Call Trace:
dump_stack_lvl+0xca/0x120
__lookup_object+0x94/0xb0
delete_object_full+0x27/0x70
free_percpu+0x30/0x1160
percpu_free_rwsem+0x53/0xa0
destroy_super_work+0xef/0x150
process_one_work+0x8e1/0x19c0
worker_thread+0x67e/0xe90
kthread+0x3c8/0x740
ret_from_fork+0x34b/0x430
ret_from_fork_asm+0x1a/0x30
kmemleak: Object (percpu) 0x607f1a638ee8 (size 8):
kmemleak: comm "syz-executor.4", pid 3963, jiffies 4294787683
kmemleak: min_count = 1
kmemleak: count = 0
kmemleak: flags = 0x21
kmemleak: checksum = 0
kmemleak: backtrace:
pcpu_alloc_noprof+0x87a/0x1170
percpu_ref_init+0x37/0x400
ioctx_alloc+0x368/0x1e10
__x64_sys_io_setup+0xc8/0x1f0
do_syscall_64+0xbf/0x360
entry_SYSCALL_64_after_hwframe+0x77/0x7f
kmemleak: Automatic memory scanning thread ended