------------[ cut here ]------------ WARNING: fs/ext4/super.c:1322 at ext4_put_super+0xbe7/0xf30, CPU#0: syz-executor.2/284 Modules linked in: CPU: 0 UID: 0 PID: 284 Comm: syz-executor.2 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:ext4_put_super+0xbe7/0xf30 Code: 7c ff 48 8d bd 00 02 00 00 e8 75 af 66 00 31 ff 49 89 c4 48 89 c6 e8 f8 be 7c ff 4d 85 e4 0f 84 ff f9 ff ff e8 8a c3 7c ff 90 <0f> 0b 90 e9 f1 f9 ff ff e8 7c c3 7c ff 4c 89 ef e8 74 f0 4a ff c7 RSP: 0018:ffff88801b6afd08 EFLAGS: 00010293 RAX: 0000000000000000 RBX: ffff888045d92000 RCX: ffffffff81f73318 RDX: ffff88801a3b9b80 RSI: ffffffff81f73326 RDI: 0000000000000007 RBP: ffff888045d94000 R08: 0000000000000001 R09: 0000000000000001 R10: 000000000000000b R11: 0000000000000001 R12: 000000000000000b R13: 0000000000000001 R14: ffff888045d92618 R15: 0000000000000000 FS: 0000555575537400(0000) GS:ffff8880e55d8000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fe0f8b4d3a4 CR3: 0000000042575000 CR4: 0000000000350ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600 Call Trace: generic_shutdown_super+0x15a/0x4a0 kill_block_super+0x3b/0x90 ext4_kill_sb+0x6c/0xb0 deactivate_locked_super+0xbf/0x1a0 deactivate_super+0xb1/0xd0 cleanup_mnt+0x2df/0x430 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: 0033:0x7f6c0c852f87 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:00007ffe47f5f6f8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6 RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007f6c0c852f87 RDX: 00007ffe47f5f7c9 RSI: 000000000000000a RDI: 00007ffe47f5f7c0 RBP: 00007ffe47f5f7c0 R08: 00000000ffffffff R09: 00007ffe47f5f590 R10: 0000555575538d13 R11: 0000000000000246 R12: 00007f6c0c8ab105 R13: 00007ffe47f60880 R14: 0000555575538c20 R15: 00007ffe47f608c0 irq event stamp: 552013 hardirqs last enabled at (552023): [] __up_console_sem+0x78/0x80 hardirqs last disabled at (552030): [] __up_console_sem+0x5d/0x80 softirqs last enabled at (551868): [] handle_softirqs+0x50c/0x770 softirqs last disabled at (551861): [] __irq_exit_rcu+0xc4/0x100 ---[ end trace 0000000000000000 ]--- loop5: detected capacity change from 0 to 144 EXT4-fs (loop5): mounted filesystem 76b65be2-f6da-4727-8c75-0525a5b65a09 r/w without journal. Quota mode: none. ext4 filesystem being mounted at /syzkaller-testdir206375658/syzkaller.fvpIp7/107/mnt supports timestamps until 2038-01-19 (0x7fffffff) loop6: detected capacity change from 0 to 144 EXT4-fs (loop6): mounted filesystem 76b65be2-f6da-4727-8c75-0525a5b65a09 r/w without journal. Quota mode: none. ext4 filesystem being mounted at /syzkaller-testdir676735297/syzkaller.DdlB9c/117/mnt supports timestamps until 2038-01-19 (0x7fffffff) loop0: detected capacity change from 0 to 144 EXT4-fs (loop0): mounted filesystem 76b65be2-f6da-4727-8c75-0525a5b65a09 r/w without journal. Quota mode: none. ext4 filesystem being mounted at /syzkaller-testdir744950102/syzkaller.ZRMEsP/111/mnt supports timestamps until 2038-01-19 (0x7fffffff) EXT4-fs (loop6): unmounting filesystem 76b65be2-f6da-4727-8c75-0525a5b65a09. loop2: detected capacity change from 0 to 144 EXT4-fs (loop0): unmounting filesystem 76b65be2-f6da-4727-8c75-0525a5b65a09. EXT4-fs (loop2): mounted filesystem 76b65be2-f6da-4727-8c75-0525a5b65a09 r/w without journal. Quota mode: none. EXT4-fs (loop5): unmounting filesystem 76b65be2-f6da-4727-8c75-0525a5b65a09. ext4 filesystem being mounted at /syzkaller-testdir803230995/syzkaller.Hu9PKN/116/mnt supports timestamps until 2038-01-19 (0x7fffffff) loop6: detected capacity change from 0 to 144 EXT4-fs (loop6): mounted filesystem 76b65be2-f6da-4727-8c75-0525a5b65a09 r/w without journal. Quota mode: none. ext4 filesystem being mounted at /syzkaller-testdir676735297/syzkaller.DdlB9c/118/mnt supports timestamps until 2038-01-19 (0x7fffffff) EXT4-fs (loop2): unmounting filesystem 76b65be2-f6da-4727-8c75-0525a5b65a09. EXT4-fs (loop6): unmounting filesystem 76b65be2-f6da-4727-8c75-0525a5b65a09. loop0: detected capacity change from 0 to 144 loop5: detected capacity change from 0 to 144 EXT4-fs (loop0): mounted filesystem 76b65be2-f6da-4727-8c75-0525a5b65a09 r/w without journal. Quota mode: none. loop6: detected capacity change from 0 to 144 EXT4-fs (loop5): mounted filesystem 76b65be2-f6da-4727-8c75-0525a5b65a09 r/w without journal. Quota mode: none. EXT4-fs (loop6): mounted filesystem 76b65be2-f6da-4727-8c75-0525a5b65a09 r/w without journal. Quota mode: none. loop2: detected capacity change from 0 to 144 ext4 filesystem being mounted at /syzkaller-testdir744950102/syzkaller.ZRMEsP/112/mnt supports timestamps until 2038-01-19 (0x7fffffff) ext4 filesystem being mounted at /syzkaller-testdir206375658/syzkaller.fvpIp7/108/mnt supports timestamps until 2038-01-19 (0x7fffffff) ext4 filesystem being mounted at /syzkaller-testdir676735297/syzkaller.DdlB9c/119/mnt supports timestamps until 2038-01-19 (0x7fffffff) EXT4-fs (loop2): mounted filesystem 76b65be2-f6da-4727-8c75-0525a5b65a09 r/w without journal. Quota mode: none. ext4 filesystem being mounted at /syzkaller-testdir803230995/syzkaller.Hu9PKN/117/mnt supports timestamps until 2038-01-19 (0x7fffffff) EXT4-fs (loop0): unmounting filesystem 76b65be2-f6da-4727-8c75-0525a5b65a09. EXT4-fs (loop5): unmounting filesystem 76b65be2-f6da-4727-8c75-0525a5b65a09. EXT4-fs (loop6): unmounting filesystem 76b65be2-f6da-4727-8c75-0525a5b65a09. loop0: detected capacity change from 0 to 144 SELinux: security_context_str_to_sid (sysadm_u) failed with errno=-22 program syz-executor.6 is using a deprecated SCSI ioctl, please convert it to SG_IO program syz-executor.6 is using a deprecated SCSI ioctl, please convert it to SG_IO SELinux: security_context_str_to_sid (sysadm_u) failed with errno=-22 EXT4-fs (loop0): mounted filesystem 76b65be2-f6da-4727-8c75-0525a5b65a09 r/w without journal. Quota mode: none. ext4 filesystem being mounted at /syzkaller-testdir744950102/syzkaller.ZRMEsP/113/mnt supports timestamps until 2038-01-19 (0x7fffffff) EXT4-fs (loop2): unmounting filesystem 76b65be2-f6da-4727-8c75-0525a5b65a09. EXT4-fs (loop0): unmounting filesystem 76b65be2-f6da-4727-8c75-0525a5b65a09. loop2: detected capacity change from 0 to 144 EXT4-fs (loop2): mounted filesystem 76b65be2-f6da-4727-8c75-0525a5b65a09 r/w without journal. Quota mode: none. program syz-executor.6 is using a deprecated SCSI ioctl, please convert it to SG_IO loop5: detected capacity change from 0 to 144 ext4 filesystem being mounted at /syzkaller-testdir803230995/syzkaller.Hu9PKN/118/mnt supports timestamps until 2038-01-19 (0x7fffffff) EXT4-fs (loop5): mounted filesystem 76b65be2-f6da-4727-8c75-0525a5b65a09 r/w without journal. Quota mode: none. ext4 filesystem being mounted at /syzkaller-testdir206375658/syzkaller.fvpIp7/109/mnt supports timestamps until 2038-01-19 (0x7fffffff) EXT4-fs (loop5): unmounting filesystem 76b65be2-f6da-4727-8c75-0525a5b65a09. SELinux: security_context_str_to_sid (sysadm_u) failed with errno=-22 EXT4-fs (loop2): unmounting filesystem 76b65be2-f6da-4727-8c75-0525a5b65a09. program syz-executor.6 is using a deprecated SCSI ioctl, please convert it to SG_IO SELinux: security_context_str_to_sid (sysadm_u) failed with errno=-22 program syz-executor.6 is using a deprecated SCSI ioctl, please convert it to SG_IO SELinux: security_context_str_to_sid (sysadm_u) failed with errno=-22 SELinux: security_context_str_to_sid () failed with errno=-22 SELinux: security_context_str_to_sid () failed with errno=-22 SELinux: security_context_str_to_sid () failed with errno=-22 SELinux: security_context_str_to_sid () failed with errno=-22 SELinux: security_context_str_to_sid () failed with errno=-22 audit: type=1326 audit(1756721859.790:27): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=6630 comm="syz-executor.4" exe="/syz-executor.4" sig=31 arch=c000003e syscall=202 compat=0 ip=0x7fde31dffb19 code=0x0 audit: type=1326 audit(1756721860.610:28): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=6630 comm="syz-executor.4" exe="/syz-executor.4" sig=31 arch=c000003e syscall=202 compat=0 ip=0x7fde31dffb19 code=0x0 audit: type=1326 audit(1756721860.699:29): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=6651 comm="syz-executor.4" exe="/syz-executor.4" sig=31 arch=c000003e syscall=202 compat=0 ip=0x7fde31dffb19 code=0x0 audit: type=1326 audit(1756721860.837:30): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=6672 comm="syz-executor.3" exe="/syz-executor.3" sig=31 arch=c000003e syscall=202 compat=0 ip=0x7fb9ba044b19 code=0x0