===================================== WARNING: bad unlock balance detected! 6.19.0-rc5-next-20260116 #1 Not tainted ------------------------------------- syz-executor.3/4198 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.3/4198: #0: ffff88800f5423f8 (sb_writers#3){.+.+}-{0:0}, at: filename_create+0xf7/0x400 #1: ffff88804d125020 (&type->i_mutex_dir_key#3/1){+.+.}-{4:4}, at: filename_create+0x1b1/0x400 #2: ffff88800f546950 (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: 4198 Comm: syz-executor.3 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: 0033:0x7f95c0b04427 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:00007fff3761c878 EFLAGS: 00000206 ORIG_RAX: 0000000000000058 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f95c0b04427 RDX: 00007fff3761c957 RSI: 00007f95c0b5f019 RDI: 00007fff3761c940 RBP: 0000000000000000 R08: 0000000000000000 R09: 00007fff3761c710 R10: 00007fff3761c5c7 R11: 0000000000000206 R12: 0000000000000001 R13: 0000000000000001 R14: 0000000000000001 R15: 00007fff3761c940 ------------[ cut here ]------------ WARNING: kernel/rcu/tree_plugin.h:443 at __rcu_read_unlock+0x25f/0x5c0, CPU#1: syz-executor.3/4198 Modules linked in: CPU: 1 UID: 0 PID: 4198 Comm: syz-executor.3 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:ffff8880450cf9a0 EFLAGS: 00010286 RAX: 00000000ffffffff RBX: ffff888054ec1b80 RCX: ffffffff815660f7 RDX: 0000000000000000 RSI: ffffffff81566100 RDI: ffff888054ec1f7c RBP: ffff888054ec1b80 R08: 0000000000000000 R09: fffffbfff0ba7040 R10: 0000000000000000 R11: 0000000000000001 R12: ffff888054ec1b80 R13: 0000000000000001 R14: ffffffff85c0ffe0 R15: ffff88804d1f7578 FS: 000055556dcc7400(0000) GS:ffff8880e5442000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f95c0b84543 CR3: 00000000523fc000 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: 0033:0x7f95c0b04427 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:00007fff3761c878 EFLAGS: 00000206 ORIG_RAX: 0000000000000058 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f95c0b04427 RDX: 00007fff3761c957 RSI: 00007f95c0b5f019 RDI: 00007fff3761c940 RBP: 0000000000000000 R08: 0000000000000000 R09: 00007fff3761c710 R10: 00007fff3761c5c7 R11: 0000000000000206 R12: 0000000000000001 R13: 0000000000000001 R14: 0000000000000001 R15: 00007fff3761c940 irq event stamp: 163 hardirqs last enabled at (163): [] _raw_spin_unlock_irqrestore+0x2c/0x50 hardirqs last disabled at (162): [] _raw_spin_lock_irqsave+0x53/0x60 softirqs last enabled at (158): [] kernel_fpu_end+0x59/0x70 softirqs last disabled at (156): [] kernel_fpu_begin_mask+0x1bb/0x300 ---[ end trace 0000000000000000 ]--- serio: Serial port ptm0 serio: Serial port ptm0 serio: Serial port ptm0 serio: Serial port ptm0 loop0: detected capacity change from 0 to 1300 serio: Serial port ptm0 serio: Serial port ptm0 loop7: detected capacity change from 0 to 64 FAT-fs (loop7): Invalid FSINFO signature: 0x00000000, 0x00000000 (sector = 1) loop2: detected capacity change from 0 to 64 FAT-fs (loop2): Invalid FSINFO signature: 0x00000000, 0x00000000 (sector = 1) loop4: detected capacity change from 0 to 64 FAT-fs (loop4): Invalid FSINFO signature: 0x00000000, 0x00000000 (sector = 1) perf: interrupt took too long (2536 > 2500), lowering kernel.perf_event_max_sample_rate to 78000 perf: interrupt took too long (3196 > 3170), lowering kernel.perf_event_max_sample_rate to 62000 perf: interrupt took too long (4001 > 3995), lowering kernel.perf_event_max_sample_rate to 49000 perf: interrupt took too long (5007 > 5001), lowering kernel.perf_event_max_sample_rate to 39000 netlink: 'syz-executor.0': attribute type 33 has an invalid length. netlink: 'syz-executor.0': attribute type 33 has an invalid length. netlink: 'syz-executor.0': attribute type 33 has an invalid length. netlink: 'syz-executor.0': attribute type 33 has an invalid length. netlink: 'syz-executor.7': attribute type 1 has an invalid length. netlink: 'syz-executor.7': attribute type 1 has an invalid length. netlink: 'syz-executor.7': attribute type 1 has an invalid length. netlink: 'syz-executor.7': attribute type 1 has an invalid length. audit: type=1400 audit(1768573230.055:18): avc: denied { watch } for pid=4773 comm="syz-executor.6" path="/proc/4773/task" dev="proc" ino=8452 scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=dir permissive=1 netlink: 12 bytes leftover after parsing attributes in process `syz-executor.3'. netlink: 12 bytes leftover after parsing attributes in process `syz-executor.3'. netlink: 12 bytes leftover after parsing attributes in process `syz-executor.3'. netlink: 12 bytes leftover after parsing attributes in process `syz-executor.3'. netlink: 12 bytes leftover after parsing attributes in process `syz-executor.3'. loop6: detected capacity change from 0 to 184 audit: type=1400 audit(1768573233.120:19): avc: denied { tracepoint } for pid=4918 comm="syz-executor.6" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=perf_event permissive=1