loop3: detected capacity change from 0 to 40 loop6: detected capacity change from 0 to 40 loop4: detected capacity change from 0 to 40 loop2: detected capacity change from 0 to 40 ------------[ cut here ]------------ WARNING: fs/namespace.c:1375 at cleanup_mnt+0x33f/0x430, CPU#1: syz-executor.3/10191 Modules linked in: CPU: 1 UID: 0 PID: 10191 Comm: syz-executor.3 Tainted: G W 6.17.0-rc4-next-20250901 #1 PREEMPT(voluntary) Tainted: [W]=WARN Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:cleanup_mnt+0x33f/0x430 Code: c7 20 49 d1 85 e8 41 b3 fa 02 49 8d 7d 40 5b 48 c7 c6 d0 fa be 81 5d 41 5c 41 5d 41 5e 41 5f e9 97 9a 9c ff e8 f2 3c b4 ff 90 <0f> 0b 90 e9 e6 fc ff ff e8 e4 3c b4 ff 4c 89 ef e8 6c d7 06 00 e9 RSP: 0018:ffff88801610fe20 EFLAGS: 00010212 RAX: 0000000000000b7a RBX: 00000000ffffffff RCX: ffffc9000301d000 RDX: 0000000000040000 RSI: ffffffff81bfb9be RDI: 0000000000000005 RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000001 R10: 00000000ffffffff R11: 0000000000000001 R12: ffff88803c372458 R13: ffff888016164e00 R14: 0000000000000001 R15: ffff888016164e40 FS: 00007efed18f5700(0000) GS:ffff8880e56d8000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007efed18f6000 CR3: 000000000cd32000 CR4: 0000000000350ef0 Call Trace: kmemleak: Found object by alias at 0x607f1a63e85c CPU: 0 UID: 0 PID: 10179 Comm: syz-executor.5 Tainted: G W 6.17.0-rc4-next-20250901 #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: 0033:0x7fc09b3e0b19 Code: Unable to access opcode bytes at 0x7fc09b3e0aef. RSP: 002b:00007ffe096419c8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 RAX: ffffffffffffffda RBX: 000000000000001e RCX: 00007fc09b3e0b19 RDX: 00007fc09b39372b RSI: ffffffffffffffbc RDI: 0000000000000000 RBP: 0000000000000000 R08: 0000001b2d823e0c R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 R13: 0000000000000000 R14: 0000000000000001 R15: 00007ffe09641ab0 kmemleak: Object (percpu) 0x607f1a63e858 (size 8): kmemleak: comm "syz-executor.4", pid 10187, jiffies 4296152227 kmemleak: min_count = 1 kmemleak: count = 0 kmemleak: flags = 0x21 kmemleak: checksum = 0 kmemleak: backtrace: pcpu_alloc_noprof+0x87a/0x1170 alloc_vfsmnt+0x135/0x6e0 clone_mnt+0x6c/0xb70 __do_loopback+0x438/0x520 path_mount+0x19b4/0x1dd0 __x64_sys_mount+0x27b/0x300 do_syscall_64+0xbf/0x360 entry_SYSCALL_64_after_hwframe+0x77/0x7f kmemleak: Found object by alias at 0x607f1a63e874 CPU: 0 UID: 0 PID: 10184 Comm: syz-executor.6 Tainted: G W 6.17.0-rc4-next-20250901 #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: 0033:0x7f4b0c07ab19 Code: Unable to access opcode bytes at 0x7f4b0c07aaef. RSP: 002b:00007fff35ef2be8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 RAX: ffffffffffffffda RBX: 000000000000001e RCX: 00007f4b0c07ab19 RDX: 00007f4b0c02d72b RSI: ffffffffffffffbc RDI: 0000000000000000 RBP: 0000000000000000 R08: 0000001b2de23ea8 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 R13: 0000000000000000 R14: 0000000000000001 R15: 00007fff35ef2cd0 kmemleak: Object (percpu) 0x607f1a63e870 (size 8): kmemleak: comm "syz-executor.3", pid 10191, jiffies 4296152227 kmemleak: min_count = 1 kmemleak: count = 0 kmemleak: flags = 0x21 kmemleak: checksum = 0 kmemleak: backtrace: pcpu_alloc_noprof+0x87a/0x1170 alloc_vfsmnt+0x135/0x6e0 clone_mnt+0x6c/0xb70 __do_loopback+0x438/0x520 path_mount+0x19b4/0x1dd0 __x64_sys_mount+0x27b/0x300 do_syscall_64+0xbf/0x360 entry_SYSCALL_64_after_hwframe+0x77/0x7f task_work_run+0x172/0x280 exit_to_user_mode_loop+0xef/0x110 do_syscall_64+0x2f7/0x360 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7efed438104a Code: 48 c7 c2 bc ff ff ff f7 d8 64 89 02 b8 ff ff ff ff eb d2 e8 b8 04 00 00 0f 1f 84 00 00 00 00 00 49 89 ca b8 a5 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:00007efed18f4fa8 EFLAGS: 00000206 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffec RBX: 00000000200010c0 RCX: 00007efed438104a RDX: 0000000020000ac0 RSI: 0000000020000b00 RDI: 00007efed18f5000 RBP: 00007efed18f5040 R08: 00007efed18f5040 R09: 0000000020000ac0 R10: 0000000000001400 R11: 0000000000000206 R12: 0000000020000ac0 R13: 0000000020000b00 R14: 00007efed18f5000 R15: 0000000020001180 loop6: detected capacity change from 0 to 40 irq event stamp: 2447 hardirqs last enabled at (2455): [] __up_console_sem+0x78/0x80 loop5: detected capacity change from 0 to 40 hardirqs last disabled at (2462): [] sysvec_apic_timer_interrupt+0xf/0x80 softirqs last enabled at (2248): [] handle_softirqs+0x50c/0x770 softirqs last disabled at (2241): [] __irq_exit_rcu+0xc4/0x100 ---[ end trace 0000000000000000 ]--- loop0: detected capacity change from 0 to 40 loop2: detected capacity change from 0 to 40 loop7: detected capacity change from 0 to 40 loop6: detected capacity change from 0 to 40 loop2: detected capacity change from 0 to 40 loop5: detected capacity change from 0 to 40 loop4: detected capacity change from 0 to 40 loop0: detected capacity change from 0 to 40 loop3: detected capacity change from 0 to 40 loop7: detected capacity change from 0 to 40 kmemleak: Found object by alias at 0x607f1a63e85c CPU: 0 UID: 0 PID: 10220 Comm: syz-executor.5 Tainted: G W 6.17.0-rc4-next-20250901 #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: 0033:0x7fc09b3e0b19 Code: Unable to access opcode bytes at 0x7fc09b3e0aef. RSP: 002b:00007ffe096419c8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 RAX: ffffffffffffffda RBX: 000000000000001e RCX: 00007fc09b3e0b19 RDX: 00007fc09b39372b RSI: ffffffffffffffbc RDI: 0000000000000000 RBP: 0000000000000000 R08: 0000001b2d823e2c R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 R13: 0000000000000000 R14: 0000000000000001 R15: 00007ffe09641ab0 kmemleak: Object (percpu) 0x607f1a63e858 (size 8): kmemleak: comm "syz-executor.7", pid 10231, jiffies 4296161774 kmemleak: min_count = 1 kmemleak: count = 0 kmemleak: flags = 0x21 kmemleak: checksum = 0 kmemleak: backtrace: pcpu_alloc_noprof+0x87a/0x1170 alloc_vfsmnt+0x135/0x6e0 clone_mnt+0x6c/0xb70 __do_loopback+0x438/0x520 path_mount+0x19b4/0x1dd0 __x64_sys_mount+0x27b/0x300 do_syscall_64+0xbf/0x360 entry_SYSCALL_64_after_hwframe+0x77/0x7f loop6: detected capacity change from 0 to 40 loop4: detected capacity change from 0 to 40 loop0: detected capacity change from 0 to 40 loop2: detected capacity change from 0 to 40 loop3: detected capacity change from 0 to 40 loop7: detected capacity change from 0 to 40 loop5: detected capacity change from 0 to 40