===================================== WARNING: bad unlock balance detected! 6.19.0-rc5-next-20260116 #1 Not tainted ------------------------------------- syz-executor.4/4540 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.4/4540: #0: ffff88800f99c3f8 (sb_writers#3){.+.+}-{0:0}, at: filename_create+0xf7/0x400 #1: ffff88801f8bc698 (&type->i_mutex_dir_key#3/1){+.+.}-{4:4}, at: filename_create+0x1b1/0x400 #2: ffff88800f9a8950 (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: 0 UID: 0 PID: 4540 Comm: syz-executor.4 Not tainted 6.19.0-rc5-next-20260116 #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_symlink+0x623/0xb40 vfs_symlink+0x44b/0x840 filename_symlinkat+0x158/0x440 __x64_sys_symlink+0x82/0x110 do_syscall_64+0xbf/0x420 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f808b0c3427 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 58 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:00007ffe713369f8 EFLAGS: 00000202 ORIG_RAX: 0000000000000058 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f808b0c3427 RDX: 00007ffe71336ad3 RSI: 00007f808b11e02f RDI: 00007ffe71336ac0 RBP: 0000000000000000 R08: 0000000000000000 R09: 00007ffe71336890 R10: 00007ffe71336747 R11: 0000000000000202 R12: 0000000000000001 R13: 0000000000000000 R14: 0000000000000001 R15: 00007ffe71336ac0 ------------[ cut here ]------------ WARNING: kernel/rcu/tree_plugin.h:443 at __rcu_read_unlock+0x25f/0x5c0, CPU#0: syz-executor.4/4540 Modules linked in: CPU: 0 UID: 0 PID: 4540 Comm: syz-executor.4 Not tainted 6.19.0-rc5-next-20260116 #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:ffff88804aa6f9a0 EFLAGS: 00010286 RAX: 00000000ffffffff RBX: ffff88801881b700 RCX: ffffffff815660f7 RDX: 0000000000000000 RSI: ffffffff81566100 RDI: ffff88801881bafc RBP: ffff88801881b700 R08: 0000000000000000 R09: fffffbfff0ba7040 R10: 0000000000000000 R11: 0000000000000001 R12: ffff88801881b700 R13: 0000000000000001 R14: ffffffff85c0dec0 R15: ffff88801f8e0318 FS: 00005555895d2400(0000) GS:ffff8880e5342000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00005555895d2708 CR3: 000000001bbdb000 CR4: 0000000000350ef0 Call Trace: __wait_on_freeing_inode+0x10f/0x350 insert_inode_locked+0x25f/0x890 __ext4_new_inode+0x223d/0x4cd0 ext4_symlink+0x623/0xb40 vfs_symlink+0x44b/0x840 filename_symlinkat+0x158/0x440 __x64_sys_symlink+0x82/0x110 do_syscall_64+0xbf/0x420 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f808b0c3427 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 58 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:00007ffe713369f8 EFLAGS: 00000202 ORIG_RAX: 0000000000000058 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f808b0c3427 RDX: 00007ffe71336ad3 RSI: 00007f808b11e02f RDI: 00007ffe71336ac0 RBP: 0000000000000000 R08: 0000000000000000 R09: 00007ffe71336890 R10: 00007ffe71336747 R11: 0000000000000202 R12: 0000000000000001 R13: 0000000000000000 R14: 0000000000000001 R15: 00007ffe71336ac0 irq event stamp: 783 hardirqs last enabled at (783): [] _raw_spin_unlock_irqrestore+0x2c/0x50 hardirqs last disabled at (782): [] _raw_spin_lock_irqsave+0x53/0x60 softirqs last enabled at (778): [] kernel_fpu_end+0x59/0x70 softirqs last disabled at (776): [] kernel_fpu_begin_mask+0x1bb/0x300 ---[ end trace 0000000000000000 ]--- audit: type=1326 audit(1768723151.439:22): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=4541 comm="syz-executor.0" exe="/syz-executor.0" sig=0 arch=c000003e syscall=202 compat=0 ip=0x7f76a80abb19 code=0x7ffc0000 audit: type=1326 audit(1768723151.439:23): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=4541 comm="syz-executor.0" exe="/syz-executor.0" sig=0 arch=c000003e syscall=298 compat=0 ip=0x7f76a80abb19 code=0x7ffc0000 audit: type=1326 audit(1768723151.441:24): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=4541 comm="syz-executor.0" exe="/syz-executor.0" sig=0 arch=c000003e syscall=202 compat=0 ip=0x7f76a80abb19 code=0x7ffc0000 audit: type=1326 audit(1768723151.441:25): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=4541 comm="syz-executor.0" exe="/syz-executor.0" sig=0 arch=c000003e syscall=83 compat=0 ip=0x7f76a80aac27 code=0x7ffc0000 loop7: detected capacity change from 0 to 512 audit: type=1326 audit(1768723151.442:26): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=4541 comm="syz-executor.0" exe="/syz-executor.0" sig=0 arch=c000003e syscall=202 compat=0 ip=0x7f76a80abb19 code=0x7ffc0000 audit: type=1326 audit(1768723151.444:27): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=4541 comm="syz-executor.0" exe="/syz-executor.0" sig=0 arch=c000003e syscall=294 compat=0 ip=0x7f76a80abb19 code=0x7ffc0000 audit: type=1326 audit(1768723151.444:28): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=4541 comm="syz-executor.0" exe="/syz-executor.0" sig=0 arch=c000003e syscall=202 compat=0 ip=0x7f76a80abb19 code=0x7ffc0000 audit: type=1326 audit(1768723151.445:29): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=4541 comm="syz-executor.0" exe="/syz-executor.0" sig=0 arch=c000003e syscall=254 compat=0 ip=0x7f76a80abb19 code=0x7ffc0000 audit: type=1400 audit(1768723151.445:30): avc: denied { watch_reads } for pid=4541 comm="syz-executor.0" path="/syzkaller-testdir319477769/syzkaller.gv1S3O/20/file0" dev="sda" ino=16002 scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:object_r:unlabeled_t:s0 tclass=dir permissive=1 EXT4-fs (loop7): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: none. audit: type=1326 audit(1768723151.450:31): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=4541 comm="syz-executor.0" exe="/syz-executor.0" sig=0 arch=c000003e syscall=202 compat=0 ip=0x7f76a80abb19 code=0x7ffc0000 program syz-executor.2 is using a deprecated SCSI ioctl, please convert it to SG_IO EXT4-fs (loop7): unmounting filesystem 00000000-0000-0000-0000-000000000000. loop7: detected capacity change from 0 to 512 loop6: detected capacity change from 0 to 264192 nfs: Unknown parameter ']^!##))' tmpfs: Unknown parameter '³Aw*] ¡H;˜g0Gø' loop6: detected capacity change from 0 to 264192 tmpfs: Unknown parameter '³Aw*] ¡H;˜g0Gø' EXT4-fs (loop7): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: none. loop6: detected capacity change from 0 to 264192 nfs: Unknown parameter ']^!##))' tmpfs: Unknown parameter '³Aw*] ¡H;˜g0Gø' loop6: detected capacity change from 0 to 264192 EXT4-fs (loop7): unmounting filesystem 00000000-0000-0000-0000-000000000000.