===================================== WARNING: bad unlock balance detected! 6.19.0-rc5-next-20260114 #1 Not tainted ------------------------------------- syz-executor.2/4329 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.2/4329: #0: ffff88800f4343f8 (sb_writers#3){.+.+}-{0:0}, at: filename_create+0xf7/0x400 #1: ffff88804e553d10 (&type->i_mutex_dir_key#3/1){+.+.}-{4:4}, at: filename_create+0x1b1/0x400 #2: ffff88800fa48950 (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: 4329 Comm: syz-executor.2 Not tainted 6.19.0-rc5-next-20260114 #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 do_symlinkat+0x153/0x440 __x64_sys_symlink+0x79/0xa0 do_syscall_64+0xbf/0x420 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f91ebb0b427 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:00007ffd42329038 EFLAGS: 00000202 ORIG_RAX: 0000000000000058 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f91ebb0b427 RDX: 00007ffd42329117 RSI: 00007f91ebb66019 RDI: 00007ffd42329100 RBP: 0000000000000000 R08: 0000000000000000 R09: 00007ffd42328ed0 R10: 00007ffd42328d87 R11: 0000000000000202 R12: 0000000000000001 R13: 0000000000000000 R14: 0000000000000001 R15: 00007ffd42329100 ------------[ cut here ]------------ WARNING: kernel/rcu/tree_plugin.h:443 at __rcu_read_unlock+0x25f/0x5c0, CPU#0: syz-executor.2/4329 Modules linked in: CPU: 0 UID: 0 PID: 4329 Comm: syz-executor.2 Not tainted 6.19.0-rc5-next-20260114 #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 16 c0 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 24 74 03 e8 bc 5c 56 00 e9 RSP: 0018:ffff8880514779a0 EFLAGS: 00010286 RAX: 00000000ffffffff RBX: ffff888051b7d280 RCX: ffffffff81565a27 RDX: 0000000000000000 RSI: ffffffff81565a30 RDI: ffff888051b7d67c RBP: ffff888051b7d280 R08: 0000000000000000 R09: fffffbfff0ba6ffc R10: 0000000000000000 R11: 0000000000000001 R12: ffff888051b7d280 R13: 0000000000000001 R14: ffffffff85c10ee0 R15: ffff88804e5845d0 FS: 0000555581300400(0000) GS:ffff8880e5343000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f91ebb8b542 CR3: 000000000fa82000 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 do_symlinkat+0x153/0x440 __x64_sys_symlink+0x79/0xa0 do_syscall_64+0xbf/0x420 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f91ebb0b427 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:00007ffd42329038 EFLAGS: 00000202 ORIG_RAX: 0000000000000058 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f91ebb0b427 RDX: 00007ffd42329117 RSI: 00007f91ebb66019 RDI: 00007ffd42329100 RBP: 0000000000000000 R08: 0000000000000000 R09: 00007ffd42328ed0 R10: 00007ffd42328d87 R11: 0000000000000202 R12: 0000000000000001 R13: 0000000000000000 R14: 0000000000000001 R15: 00007ffd42329100 irq event stamp: 185 hardirqs last enabled at (185): [] _raw_spin_unlock_irqrestore+0x2c/0x50 hardirqs last disabled at (184): [] _raw_spin_lock_irqsave+0x53/0x60 softirqs last enabled at (180): [] kernel_fpu_end+0x59/0x70 softirqs last disabled at (178): [] kernel_fpu_begin_mask+0x1bb/0x300 ---[ end trace 0000000000000000 ]--- syz-executor.7 (4352) used greatest stack depth: 24040 bytes left tmpfs: Unknown parameter './file1' loop7: detected capacity change from 0 to 6 FAT-fs (loop7): Directory bread(block 6) failed FAT-fs (loop7): Directory bread(block 6) failed FAT-fs (loop7): Directory bread(block 6) failed loop7: detected capacity change from 0 to 6 FAT-fs (loop7): Directory bread(block 6) failed FAT-fs (loop7): Directory bread(block 6) failed FAT-fs (loop7): Directory bread(block 6) failed UDPLite6: UDP-Lite is deprecated and scheduled to be removed in 2025, please contact the netdev mailing list loop7: detected capacity change from 0 to 6 FAT-fs (loop7): Directory bread(block 6) failed FAT-fs (loop7): Directory bread(block 6) failed FAT-fs (loop7): Directory bread(block 6) failed audit: type=1400 audit(1768380031.529:11): avc: denied { read } for pid=4586 comm="syz-executor.4" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=perf_event permissive=1 loop7: detected capacity change from 0 to 6 FAT-fs (loop7): Directory bread(block 6) failed FAT-fs (loop7): Directory bread(block 6) failed FAT-fs (loop7): Directory bread(block 6) failed autofs4:pid:4634:check_dev_ioctl_version: ioctl control interface version mismatch: kernel(1.1), user(1.2), cmd(0xc0189377) autofs4:pid:4634:validate_dev_ioctl: invalid device control module version supplied for cmd(0xc0189377) autofs4:pid:4641:check_dev_ioctl_version: ioctl control interface version mismatch: kernel(1.1), user(1.2), cmd(0xc0189377) autofs4:pid:4641:validate_dev_ioctl: invalid device control module version supplied for cmd(0xc0189377) autofs4:pid:4647:check_dev_ioctl_version: ioctl control interface version mismatch: kernel(1.1), user(1.2), cmd(0xc0189377) autofs4:pid:4647:validate_dev_ioctl: invalid device control module version supplied for cmd(0xc0189377) autofs4:pid:4656:check_dev_ioctl_version: ioctl control interface version mismatch: kernel(1.1), user(1.2), cmd(0xc0189377) autofs4:pid:4656:validate_dev_ioctl: invalid device control module version supplied for cmd(0xc0189377) loop4: detected capacity change from 0 to 270 loop4: detected capacity change from 0 to 270 loop7: detected capacity change from 0 to 270 loop4: detected capacity change from 0 to 270 loop5: detected capacity change from 0 to 5152 loop7: detected capacity change from 0 to 270 EXT4-fs (loop2): mounting ext2 file system using the ext4 subsystem EXT4-fs (loop2): invalid inodes per group: 536870944 EXT4-fs (loop2): mounting ext2 file system using the ext4 subsystem EXT4-fs (loop2): invalid inodes per group: 536870944 EXT4-fs (loop2): mounting ext2 file system using the ext4 subsystem EXT4-fs (loop2): invalid inodes per group: 536870944 EXT4-fs (loop2): mounting ext2 file system using the ext4 subsystem EXT4-fs (loop2): invalid inodes per group: 536870944 EXT4-fs (loop2): mounting ext2 file system using the ext4 subsystem EXT4-fs (loop2): invalid inodes per group: 536870944