===================================== WARNING: bad unlock balance detected! 6.19.0-rc5-next-20260116 #1 Not tainted ------------------------------------- syz-executor.2/5715 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.2/5715: #0: ffff88800f7723f8 (sb_writers#3){.+.+}-{0:0}, at: filename_create+0xf7/0x400 #1: ffff88804a136330 (&type->i_mutex_dir_key#3/1){+.+.}-{4:4}, at: filename_create+0x1b1/0x400 #2: ffff88800f776950 (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: 5715 Comm: syz-executor.2 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: 0033:0x7fa2cd61c427 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:00007ffc02154828 EFLAGS: 00000206 ORIG_RAX: 0000000000000058 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fa2cd61c427 RDX: 00007ffc02154907 RSI: 00007fa2cd677019 RDI: 00007ffc021548f0 RBP: 0000000000000000 R08: 0000000000000000 R09: 00007ffc021546c0 R10: 00007ffc02154577 R11: 0000000000000206 R12: 0000000000000001 R13: 0000000000000001 R14: 0000000000000001 R15: 00007ffc021548f0 ------------[ cut here ]------------ WARNING: kernel/rcu/tree_plugin.h:443 at __rcu_read_unlock+0x25f/0x5c0, CPU#1: syz-executor.2/5715 Modules linked in: CPU: 1 UID: 0 PID: 5715 Comm: syz-executor.2 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:ffff88804b2979a0 EFLAGS: 00010286 RAX: 00000000ffffffff RBX: ffff88801a8e0000 RCX: ffffffff815660f7 RDX: 0000000000000000 RSI: ffffffff81566100 RDI: ffff88801a8e03fc RBP: ffff88801a8e0000 R08: 0000000000000000 R09: fffffbfff0ba7040 R10: 0000000000000000 R11: 0000000000000001 R12: ffff88801a8e0000 R13: 0000000000000001 R14: ffffffff85c0f680 R15: ffff88801addd8e0 FS: 0000555562a5f400(0000) GS:ffff8880e5442000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fa2cd69c542 CR3: 000000004b08a000 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: 0033:0x7fa2cd61c427 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:00007ffc02154828 EFLAGS: 00000206 ORIG_RAX: 0000000000000058 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fa2cd61c427 RDX: 00007ffc02154907 RSI: 00007fa2cd677019 RDI: 00007ffc021548f0 RBP: 0000000000000000 R08: 0000000000000000 R09: 00007ffc021546c0 R10: 00007ffc02154577 R11: 0000000000000206 R12: 0000000000000001 R13: 0000000000000001 R14: 0000000000000001 R15: 00007ffc021548f0 irq event stamp: 191 hardirqs last enabled at (191): [] _raw_spin_unlock_irqrestore+0x2c/0x50 hardirqs last disabled at (190): [] _raw_spin_lock_irqsave+0x53/0x60 softirqs last enabled at (186): [] kernel_fpu_end+0x59/0x70 softirqs last disabled at (184): [] kernel_fpu_begin_mask+0x1bb/0x300 ---[ end trace 0000000000000000 ]--- netlink: 12 bytes leftover after parsing attributes in process `syz-executor.2'. loop5: detected capacity change from 0 to 127 audit: type=1400 audit(1768855132.562:48): avc: denied { module_load } for pid=5728 comm="syz-executor.6" path=2F6D656D66643A2F70726F632F7468726561642D73656C662F617474722F6673637265617465202864656C6574656429 dev="tmpfs" ino=41 scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:object_r:tmpfs_t:s0 tclass=system permissive=1 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 tmpfs: Bad value for 'nr_inodes' tmpfs: Bad value for 'nr_inodes' loop6: detected capacity change from 0 to 2048 EXT4-fs error (device loop6): ext4_quota_enable:7179: comm syz-executor.6: Bad quota inum: 8, type: 0 EXT4-fs warning (device loop6): ext4_enable_quotas:7224: Failed to enable quota tracking (type=0, err=-117, ino=8). Please run e2fsck to fix. EXT4-fs (loop6): mount failed loop6: detected capacity change from 0 to 2048 EXT4-fs error (device loop6): ext4_quota_enable:7179: comm syz-executor.6: Bad quota inum: 8, type: 0 EXT4-fs warning (device loop6): ext4_enable_quotas:7224: Failed to enable quota tracking (type=0, err=-117, ino=8). Please run e2fsck to fix. EXT4-fs (loop6): mount failed loop2: detected capacity change from 0 to 6 FAT-fs (loop2): Directory bread(block 6) failed Bluetooth: hci5: ACL packet for unknown connection handle 200 FAT-fs (loop2): Directory bread(block 6) failed FAT-fs (loop2): Directory bread(block 6) failed Bluetooth: hci5: ACL packet for unknown connection handle 200 Bluetooth: hci7: command 0x0406 tx timeout loop3: detected capacity change from 0 to 2048 EXT4-fs: Invalid want_extra_isize 9 loop3: detected capacity change from 0 to 2048 EXT4-fs: Invalid want_extra_isize 9 loop2: detected capacity change from 0 to 127 tmpfs: Invalid gid '0x00000000ffffffff' loop2: detected capacity change from 0 to 127 tmpfs: Invalid gid '0x00000000ffffffff'