===================================== WARNING: bad unlock balance detected! 6.19.0-rc5-next-20260116 #1 Not tainted ------------------------------------- syz-executor.7/4214 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.7/4214: #0: ffff88800a3a23f8 (sb_writers#3){.+.+}-{0:0}, at: filename_create+0xf7/0x400 #1: ffff88801befb388 (&type->i_mutex_dir_key#3/1){+.+.}-{4:4}, at: filename_create+0x1b1/0x400 #2: ffff88800aa8e950 (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: 4214 Comm: syz-executor.7 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: 0033:0x7f624e463427 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:00007ffc36e15c98 EFLAGS: 00000206 ORIG_RAX: 0000000000000058 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f624e463427 RDX: ffffffffffffffbc RSI: 00007f624e4be00e RDI: 00007f624e4bd1dd RBP: 0000000000000000 R08: 0000000000000000 R09: 00007ffc36e15710 R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000001 R13: 0000000000000000 R14: 0000000000000001 R15: 00007ffc36e15d60 ------------[ cut here ]------------ WARNING: kernel/rcu/tree_plugin.h:443 at __rcu_read_unlock+0x25f/0x5c0, CPU#1: syz-executor.7/4214 Modules linked in: CPU: 1 UID: 0 PID: 4214 Comm: syz-executor.7 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:ffff88804ac079a0 EFLAGS: 00010286 RAX: 00000000ffffffff RBX: ffff888048d80000 RCX: ffffffff815660f7 RDX: 0000000000000000 RSI: ffffffff81566100 RDI: ffff888048d803fc RBP: ffff888048d80000 R08: 0000000000000000 R09: fffffbfff0ba7040 R10: 0000000000000000 R11: 0000000000000001 R12: ffff888048d80000 R13: 0000000000000001 R14: ffffffff85c0f770 R15: ffff8880150ca938 FS: 000055557cc48400(0000) GS:ffff8880e5442000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020133000 CR3: 000000000c787000 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: 0033:0x7f624e463427 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:00007ffc36e15c98 EFLAGS: 00000206 ORIG_RAX: 0000000000000058 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f624e463427 RDX: ffffffffffffffbc RSI: 00007f624e4be00e RDI: 00007f624e4bd1dd RBP: 0000000000000000 R08: 0000000000000000 R09: 00007ffc36e15710 R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000001 R13: 0000000000000000 R14: 0000000000000001 R15: 00007ffc36e15d60 irq event stamp: 993 hardirqs last enabled at (993): [] irqentry_exit+0x17b/0x650 hardirqs last disabled at (991): [] handle_softirqs+0x65e/0x7d0 softirqs last enabled at (992): [] __irq_exit_rcu+0xc4/0x100 softirqs last disabled at (983): [] __irq_exit_rcu+0xc4/0x100 ---[ end trace 0000000000000000 ]--- EXT4-fs (loop4): unmounting filesystem 00000000-0000-0000-0000-000000000000. loop2: detected capacity change from 0 to 2048 loop5: detected capacity change from 0 to 2560 ext4: Unknown parameter '' loop5: detected capacity change from 0 to 2560 ext4: Unknown parameter '' EXT4-fs (loop2): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback. EXT4-fs (loop2): unmounting filesystem 00000000-0000-0000-0000-000000000000. loop7: detected capacity change from 0 to 2048 loop4: detected capacity change from 0 to 2048 EXT4-fs (loop4): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback. loop2: detected capacity change from 0 to 2048 EXT4-fs (loop4): unmounting filesystem 00000000-0000-0000-0000-000000000000. loop7: detected capacity change from 0 to 2048 EXT4-fs (loop2): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback. loop5: detected capacity change from 0 to 512 ext4: Unknown parameter 'L#_llКo<r:k"3 ' loop4: detected capacity change from 0 to 2048 loop3: detected capacity change from 0 to 2048 EXT4-fs (loop2): unmounting filesystem 00000000-0000-0000-0000-000000000000. loop7: detected capacity change from 0 to 2048 ext3: Unknown parameter 'e!3.R' loop3: detected capacity change from 0 to 2048 ext3: Unknown parameter 'e!3.R' audit: type=1400 audit(1768666101.614:13): avc: denied { watch_reads } for pid=4279 comm="syz-executor.5" path="/syzkaller-testdir891541612/syzkaller.3BMpVc/12" dev="sda" ino=15984 scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:object_r:unlabeled_t:s0 tclass=dir permissive=1 loop4: detected capacity change from 0 to 2048