===================================== WARNING: bad unlock balance detected! 6.19.0-rc5-next-20260115 #1 Not tainted ------------------------------------- syz-executor.0/284 is trying to release lock (rcu_read_lock) at: [] __wait_on_freeing_inode+0x105/0x350 but there are no more locks to release! other info that might help us debug this: 4 locks held by syz-executor.0/284: #0: ffff88800f69a3f8 (sb_writers#3){.+.+}-{0:0}, at: filename_create+0xf7/0x400 #1: ffff88801bcdc698 (&type->i_mutex_dir_key#3/1){+.+.}-{4:4}, at: filename_create+0x1b1/0x400 #2: ffff88800f69e950 (jbd2_handle){++++}-{0:0}, at: start_this_handle+0xe32/0x12d0 #3: ffffffff85c16898 (inode_hash_lock){+.+.}-{3:3}, at: insert_inode_locked+0xf9/0x890 stack backtrace: CPU: 1 UID: 0 PID: 284 Comm: syz-executor.0 Not tainted 6.19.0-rc5-next-20260115 #1 PREEMPT(lazy) Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 Call Trace: dump_stack_lvl+0xca/0x120 print_unlock_imbalance_bug+0x118/0x130 lock_release+0x1ee/0x270 __wait_on_freeing_inode+0x10a/0x350 insert_inode_locked+0x25f/0x890 __ext4_new_inode+0x223d/0x4cd0 ext4_mkdir+0x331/0xb30 vfs_mkdir+0x6d8/0xc00 filename_mkdirat+0x118/0x430 __x64_sys_mkdir+0x6e/0xd0 do_syscall_64+0xbf/0x420 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f58c2e10c27 Code: 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 b8 53 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:00007fff568bda18 EFLAGS: 00000206 ORIG_RAX: 0000000000000053 RAX: ffffffffffffffda RBX: 00007fff568bdaa0 RCX: 00007f58c2e10c27 RDX: 0000000000000000 RSI: 00000000000001ff RDI: 00007fff568bdaa0 RBP: 00007fff568bda7c R08: 0000000000000000 R09: 0000000000000004 R10: 00007fff568bd7b6 R11: 0000000000000206 R12: 0000000000000032 R13: 000000000001fc50 R14: 0000000000000002 R15: 00007fff568bdae0 ------------[ cut here ]------------ WARNING: kernel/rcu/tree_plugin.h:443 at __rcu_read_unlock+0x25f/0x5c0, CPU#1: syz-executor.0/284 Modules linked in: CPU: 1 UID: 0 PID: 284 Comm: syz-executor.0 Not tainted 6.19.0-rc5-next-20260115 #1 PREEMPT(lazy) Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:__rcu_read_unlock+0x25f/0x5c0 Code: f2 02 00 00 c7 43 58 01 00 00 00 bf 09 00 00 00 e8 d6 b7 de ff 4d 85 f6 0f 84 73 fe ff ff e8 38 8a 20 00 fb e9 68 fe ff ff 90 <0f> 0b 90 5b 5d 41 5c 41 5d 41 5e e9 81 4d 74 03 e8 2c 5d 56 00 e9 RSP: 0018:ffff88801ab079e0 EFLAGS: 00010286 RAX: 00000000ffffffff RBX: ffff888015d2d280 RCX: ffffffff815660f7 RDX: 0000000000000000 RSI: ffffffff81566100 RDI: ffff888015d2d67c RBP: ffff888015d2d280 R08: 0000000000000000 R09: fffffbfff0ba7040 R10: 0000000000000000 R11: 0000000000000001 R12: ffff888015d2d280 R13: 0000000000000001 R14: ffffffff85c0e460 R15: ffff88804a707578 FS: 000055557a8c8400(0000) GS:ffff8880e5442000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000055557a8d1c58 CR3: 000000000e320000 CR4: 0000000000350ef0 Call Trace: __wait_on_freeing_inode+0x10f/0x350 insert_inode_locked+0x25f/0x890 __ext4_new_inode+0x223d/0x4cd0 ext4_mkdir+0x331/0xb30 vfs_mkdir+0x6d8/0xc00 filename_mkdirat+0x118/0x430 __x64_sys_mkdir+0x6e/0xd0 do_syscall_64+0xbf/0x420 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f58c2e10c27 Code: 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 b8 53 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:00007fff568bda18 EFLAGS: 00000206 ORIG_RAX: 0000000000000053 RAX: ffffffffffffffda RBX: 00007fff568bdaa0 RCX: 00007f58c2e10c27 RDX: 0000000000000000 RSI: 00000000000001ff RDI: 00007fff568bdaa0 RBP: 00007fff568bda7c R08: 0000000000000000 R09: 0000000000000004 R10: 00007fff568bd7b6 R11: 0000000000000206 R12: 0000000000000032 R13: 000000000001fc50 R14: 0000000000000002 R15: 00007fff568bdae0 irq event stamp: 277763 hardirqs last enabled at (277763): [] _raw_spin_unlock_irqrestore+0x2c/0x50 hardirqs last disabled at (277762): [] _raw_spin_lock_irqsave+0x53/0x60 softirqs last enabled at (277758): [] kernel_fpu_end+0x59/0x70 softirqs last disabled at (277756): [] kernel_fpu_begin_mask+0x1bb/0x300 ---[ end trace 0000000000000000 ]--- loop6: detected capacity change from 0 to 224 EXT4-fs (loop4): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback. ISO 9660 Extensions: Microsoft Joliet Level 0 EXT4-fs (loop4): unmounting filesystem 00000000-0000-0000-0000-000000000000. loop6: detected capacity change from 0 to 224 loop4: detected capacity change from 0 to 1024 ISO 9660 Extensions: Microsoft Joliet Level 0 EXT4-fs (loop4): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback. EXT4-fs (loop4): unmounting filesystem 00000000-0000-0000-0000-000000000000. loop4: detected capacity change from 0 to 1024 EXT4-fs (loop4): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback. EXT4-fs (loop4): unmounting filesystem 00000000-0000-0000-0000-000000000000. tmpfs: Unknown parameter './file0/file0' loop4: detected capacity change from 0 to 1024 EXT4-fs (loop4): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback. EXT4-fs (loop4): unmounting filesystem 00000000-0000-0000-0000-000000000000. syz-executor.5 (4544): /proc/4537/oom_adj is deprecated, please use /proc/4537/oom_score_adj instead. audit: type=1326 audit(1768468926.703:18): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=4538 comm="syz-executor.4" exe="/syz-executor.4" sig=0 arch=c000003e syscall=202 compat=0 ip=0x7f123ef67b19 code=0x7ffc0000 audit: type=1326 audit(1768468926.706:19): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=4538 comm="syz-executor.4" exe="/syz-executor.4" sig=0 arch=c000003e syscall=16 compat=0 ip=0x7f123ef67b19 code=0x7ffc0000 audit: type=1326 audit(1768468926.706:20): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=4538 comm="syz-executor.4" exe="/syz-executor.4" sig=0 arch=c000003e syscall=202 compat=0 ip=0x7f123ef67b19 code=0x7ffc0000 audit: type=1326 audit(1768468926.706:21): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=4538 comm="syz-executor.4" exe="/syz-executor.4" sig=0 arch=c000003e syscall=202 compat=0 ip=0x7f123ef67b19 code=0x7ffc0000 audit: type=1326 audit(1768468926.742:22): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=4538 comm="syz-executor.4" exe="/syz-executor.4" sig=0 arch=c000003e syscall=298 compat=0 ip=0x7f123ef67b19 code=0x7ffc0000 audit: type=1326 audit(1768468926.756:23): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=4538 comm="syz-executor.4" exe="/syz-executor.4" sig=0 arch=c000003e syscall=202 compat=0 ip=0x7f123ef67b19 code=0x7ffc0000 audit: type=1326 audit(1768468926.760:24): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=4538 comm="syz-executor.4" exe="/syz-executor.4" sig=0 arch=c000003e syscall=202 compat=0 ip=0x7f123ef67b19 code=0x7ffc0000 audit: type=1326 audit(1768468926.760:25): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=4538 comm="syz-executor.4" exe="/syz-executor.4" sig=0 arch=c000003e syscall=257 compat=0 ip=0x7f123ef1aa04 code=0x7ffc0000 audit: type=1326 audit(1768468926.761:26): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=4538 comm="syz-executor.4" exe="/syz-executor.4" sig=0 arch=c000003e syscall=16 compat=0 ip=0x7f123ef67b19 code=0x7ffc0000 audit: type=1326 audit(1768468926.761:27): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=4538 comm="syz-executor.4" exe="/syz-executor.4" sig=0 arch=c000003e syscall=202 compat=0 ip=0x7f123ef67b19 code=0x7ffc0000 mmap: syz-executor.0 (4626) uses deprecated remap_file_pages() syscall. See Documentation/mm/remap_file_pages.rst. sr 1:0:0:0: [sr0] tag#0 unaligned transfer I/O error, dev sr0, sector 34 op 0x0:(READ) flags 0x800000 phys_seg 1 prio class 2 sr 1:0:0:0: [sr0] tag#0 unaligned transfer I/O error, dev sr0, sector 35 op 0x0:(READ) flags 0x800000 phys_seg 1 prio class 2 sr 1:0:0:0: [sr0] CDROM not ready. Make sure there is a disc in the drive. loop7: detected capacity change from 0 to 264192 sr 1:0:0:0: [sr0] CDROM not ready. Make sure there is a disc in the drive. sr 1:0:0:0: [sr0] tag#0 unaligned transfer I/O error, dev sr0, sector 34 op 0x0:(READ) flags 0x800000 phys_seg 2 prio class 2 sr 1:0:0:0: [sr0] CDROM not ready. Make sure there is a disc in the drive. sr 1:0:0:0: [sr0] tag#0 unaligned transfer I/O error, dev sr0, sector 34 op 0x0:(READ) flags 0x800000 phys_seg 2 prio class 2 program syz-executor.4 is using a deprecated SCSI ioctl, please convert it to SG_IO program syz-executor.4 is using a deprecated SCSI ioctl, please convert it to SG_IO loop0: detected capacity change from 0 to 3 FAT-fs (loop0): Invalid FSINFO signature: 0x00000000, 0x00000000 (sector = 1) FAT-fs (loop0): error, fat_get_cluster: invalid start cluster (i_pos 1, start 00000001) FAT-fs (loop0): Filesystem has been set read-only loop0: detected capacity change from 0 to 3 FAT-fs (loop0): Invalid FSINFO signature: 0x00000000, 0x00000000 (sector = 1) FAT-fs (loop0): error, fat_get_cluster: invalid start cluster (i_pos 1, start 00000001) FAT-fs (loop0): Filesystem has been set read-only loop0: detected capacity change from 0 to 3 FAT-fs (loop0): Invalid FSINFO signature: 0x00000000, 0x00000000 (sector = 1) FAT-fs (loop0): error, fat_get_cluster: invalid start cluster (i_pos 1, start 00000001) FAT-fs (loop0): Filesystem has been set read-only loop0: detected capacity change from 0 to 3 FAT-fs (loop0): Invalid FSINFO signature: 0x00000000, 0x00000000 (sector = 1) FAT-fs (loop0): error, fat_get_cluster: invalid start cluster (i_pos 1, start 00000001) FAT-fs (loop0): Filesystem has been set read-only loop0: detected capacity change from 0 to 3 FAT-fs (loop0): Invalid FSINFO signature: 0x00000000, 0x00000000 (sector = 1) FAT-fs (loop0): error, fat_get_cluster: invalid start cluster (i_pos 1, start 00000001) FAT-fs (loop0): Filesystem has been set read-only iso9660: Bad value for 'block' iso9660: Bad value for 'block' hugetlbfs: syz-executor.1 (5082): Using mlock ulimits for SHM_HUGETLB is obsolete No source specified No source specified kauditd_printk_skb: 18 callbacks suppressed audit: type=1400 audit(1768468932.207:46): avc: denied { write } for pid=5097 comm="syz-executor.0" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=perf_event permissive=1 syz-executor.7 (5162) used greatest stack depth: 24176 bytes left program syz-executor.4 is using a deprecated SCSI ioctl, please convert it to SG_IO ata1.00: non-matching transfer count (0/1) loop0: detected capacity change from 0 to 512 program syz-executor.4 is using a deprecated SCSI ioctl, please convert it to SG_IO ata1.00: non-matching transfer count (6656/1) EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: none. EXT4-fs error (device loop0): ext4_lookup:1787: inode #2: comm syz-executor.0: deleted inode referenced: 12 program syz-executor.4 is using a deprecated SCSI ioctl, please convert it to SG_IO ata1.00: non-matching transfer count (0/1) EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. program syz-executor.4 is using a deprecated SCSI ioctl, please convert it to SG_IO ata1.00: non-matching transfer count (0/1) program syz-executor.4 is using a deprecated SCSI ioctl, please convert it to SG_IO ata1.00: non-matching transfer count (0/1) loop0: detected capacity change from 0 to 16383 loop0: detected capacity change from 0 to 16383 audit: type=1326 audit(1768468933.711:47): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=5298 comm="syz-executor.3" exe="/syz-executor.3" sig=31 arch=c000003e syscall=202 compat=0 ip=0x7fcdbde33b19 code=0x0 loop7: detected capacity change from 0 to 2048 EXT4-fs warning (device loop7): read_mmp_block:110: Error -117 while reading MMP block 0 loop7: detected capacity change from 0 to 2048 EXT4-fs warning (device loop7): read_mmp_block:110: Error -117 while reading MMP block 0 serio: Serial port ptm0 serio: Serial port ptm0 audit: type=1326 audit(1768468934.543:48): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=5298 comm="syz-executor.3" exe="/syz-executor.3" sig=31 arch=c000003e syscall=202 compat=0 ip=0x7fcdbde33b19 code=0x0 loop7: detected capacity change from 0 to 2048 audit: type=1326 audit(1768468934.666:49): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=5321 comm="syz-executor.3" exe="/syz-executor.3" sig=31 arch=c000003e syscall=202 compat=0 ip=0x7fcdbde33b19 code=0x0 EXT4-fs warning (device loop7): read_mmp_block:110: Error -117 while reading MMP block 0 loop7: detected capacity change from 0 to 2048 EXT4-fs warning (device loop7): read_mmp_block:110: Error -117 while reading MMP block 0 loop7: detected capacity change from 0 to 2048 EXT4-fs warning (device loop7): read_mmp_block:110: Error -117 while reading MMP block 0 audit: type=1326 audit(1768468935.580:50): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=5372 comm="syz-executor.3" exe="/syz-executor.3" sig=31 arch=c000003e syscall=202 compat=0 ip=0x7fcdbde33b19 code=0x0