=====================================
WARNING: bad unlock balance detected!
6.19.0-rc5-next-20260115 #1 Not tainted
-------------------------------------
syz-executor.2/4490 is trying to release lock (rcu_read_lock) at:
[<ffffffff81c1dee5>] __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.2/4490:
 #0: ffff88800f9a83f8 (sb_writers#3){.+.+}-{0:0}, at: filename_create+0xf7/0x400
 #1: ffff88804c132078 (&type->i_mutex_dir_key#3/1){+.+.}-{4:4}, at: filename_create+0x1b1/0x400
 #2: ffff88800f9ac950 (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: 4490 Comm: syz-executor.2 Not tainted 6.19.0-rc5-next-20260115 #1 PREEMPT(lazy) 
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014
Call Trace:
 <TASK>
 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: 0033:0x7f32a16a2427
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:00007fff00603908 EFLAGS: 00000202 ORIG_RAX: 0000000000000058
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f32a16a2427
RDX: 00007fff006039e7 RSI: 00007f32a16fd019 RDI: 00007fff006039d0
RBP: 0000000000000000 R08: 0000000000000000 R09: 00007fff006037a0
R10: 00007fff00603657 R11: 0000000000000202 R12: 0000000000000001
R13: 0000000000000000 R14: 0000000000000001 R15: 00007fff006039d0
 </TASK>
------------[ cut here ]------------
WARNING: kernel/rcu/tree_plugin.h:443 at __rcu_read_unlock+0x25f/0x5c0, CPU#0: syz-executor.2/4490
Modules linked in:
CPU: 0 UID: 0 PID: 4490 Comm: syz-executor.2 Not tainted 6.19.0-rc5-next-20260115 #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:ffff88802045f9a0 EFLAGS: 00010286
RAX: 00000000ffffffff RBX: ffff88804b99d280 RCX: ffffffff815660f7
RDX: 0000000000000000 RSI: ffffffff81566100 RDI: ffff88804b99d67c
RBP: ffff88804b99d280 R08: 0000000000000000 R09: fffffbfff0ba7040
R10: 0000000000000000 R11: 0000000000000001 R12: ffff88804b99d280
R13: 0000000000000001 R14: ffffffff85c0cde0 R15: ffff88804979d8e0
FS:  000055555bcea400(0000) GS:ffff8880e5342000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f32a1722542 CR3: 000000001dfe0000 CR4: 0000000000350ef0
Call Trace:
 <TASK>
 __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: 0033:0x7f32a16a2427
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:00007fff00603908 EFLAGS: 00000202 ORIG_RAX: 0000000000000058
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f32a16a2427
RDX: 00007fff006039e7 RSI: 00007f32a16fd019 RDI: 00007fff006039d0
RBP: 0000000000000000 R08: 0000000000000000 R09: 00007fff006037a0
R10: 00007fff00603657 R11: 0000000000000202 R12: 0000000000000001
R13: 0000000000000000 R14: 0000000000000001 R15: 00007fff006039d0
 </TASK>
irq event stamp: 185
hardirqs last  enabled at (185): [<ffffffff84d19a7c>] _raw_spin_unlock_irqrestore+0x2c/0x50
hardirqs last disabled at (184): [<ffffffff84d197d3>] _raw_spin_lock_irqsave+0x53/0x60
softirqs last  enabled at (180): [<ffffffff812cda79>] kernel_fpu_end+0x59/0x70
softirqs last disabled at (178): [<ffffffff812ce94b>] kernel_fpu_begin_mask+0x1bb/0x300
---[ end trace 0000000000000000 ]---
EXT4-fs (sda): Can't modify superblock whileperforming online resize
loop4: detected capacity change from 0 to 264192
ISOFS: Logical zone size(0) < hardware blocksize(1024)
loop4: detected capacity change from 0 to 264192
ISOFS: Logical zone size(0) < hardware blocksize(1024)
loop4: detected capacity change from 0 to 264192
ISOFS: Logical zone size(0) < hardware blocksize(1024)
ISOFS: Logical zone size(0) < hardware blocksize(1024)
__nla_validate_parse: 4 callbacks suppressed
netlink: 36 bytes leftover after parsing attributes in process `syz-executor.7'.
netlink: 36 bytes leftover after parsing attributes in process `syz-executor.7'.
ISOFS: Logical zone size(0) < hardware blocksize(1024)
EXT4-fs: test_dummy_encryption option not supported
EXT4-fs: test_dummy_encryption option not supported
EXT4-fs: test_dummy_encryption option not supported
EXT4-fs: test_dummy_encryption option not supported
EXT4-fs: test_dummy_encryption option not supported
ref_ctr_offset mismatch. inode: 0x3e8a offset: 0x0 ref_ctr_offset(old): 0x0 ref_ctr_offset(new): 0x4
ref_ctr_offset mismatch. inode: 0x3e9c offset: 0x0 ref_ctr_offset(old): 0x0 ref_ctr_offset(new): 0x4
ref_ctr_offset mismatch. inode: 0x3e9c offset: 0x0 ref_ctr_offset(old): 0x0 ref_ctr_offset(new): 0x4
ref_ctr_offset mismatch. inode: 0x3e82 offset: 0x0 ref_ctr_offset(old): 0x0 ref_ctr_offset(new): 0x4
UDPLite6: UDP-Lite is deprecated and scheduled to be removed in 2025, please contact the netdev mailing list
EXT4-fs: EXT4-fs: inode_readahead_blks must be 0 or a power of 2 smaller than 2^31
UDPLite: UDP-Lite is deprecated and scheduled to be removed in 2025, please contact the netdev mailing list
EXT4-fs: EXT4-fs: inode_readahead_blks must be 0 or a power of 2 smaller than 2^31
EXT4-fs: EXT4-fs: inode_readahead_blks must be 0 or a power of 2 smaller than 2^31
EXT4-fs: EXT4-fs: inode_readahead_blks must be 0 or a power of 2 smaller than 2^31
EXT4-fs: EXT4-fs: inode_readahead_blks must be 0 or a power of 2 smaller than 2^31
set_capacity_and_notify: 2 callbacks suppressed
loop4: detected capacity change from 0 to 640
EXT4-fs (loop4): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback.
ext4 filesystem being mounted at /syzkaller-testdir944534558/syzkaller.L9p5bh/74/file0 supports timestamps until 2038-01-19 (0x7fffffff)
EXT4-fs (loop4): unmounting filesystem 00000000-0000-0000-0000-000000000000.
mac80211_hwsim hwsim15 wlan1: entered promiscuous mode
mac80211_hwsim hwsim15 wlan1: left promiscuous mode
mac80211_hwsim hwsim15 wlan1: entered promiscuous mode
mac80211_hwsim hwsim15 wlan1: left promiscuous mode
mac80211_hwsim hwsim15 wlan1: entered promiscuous mode
mac80211_hwsim hwsim15 wlan1: left promiscuous mode
syz-executor.6 (5312) used greatest stack depth: 23912 bytes left
mac80211_hwsim hwsim7 wlan1: entered promiscuous mode
mac80211_hwsim hwsim7 wlan1: left promiscuous mode
mac80211_hwsim hwsim15 wlan1: entered promiscuous mode
mac80211_hwsim hwsim15 wlan1: left promiscuous mode
mac80211_hwsim hwsim7 wlan1: entered promiscuous mode
mac80211_hwsim hwsim7 wlan1: left promiscuous mode
netlink: 4 bytes leftover after parsing attributes in process `syz-executor.4'.
mac80211_hwsim hwsim15 wlan1: entered promiscuous mode
mac80211_hwsim hwsim7 wlan1: entered promiscuous mode
netlink: 4 bytes leftover after parsing attributes in process `syz-executor.4'.
mac80211_hwsim hwsim15 wlan1: left promiscuous mode
mac80211_hwsim hwsim7 wlan1: left promiscuous mode
netlink: 4 bytes leftover after parsing attributes in process `syz-executor.4'.
netlink: 4 bytes leftover after parsing attributes in process `syz-executor.4'.
netlink: 4 bytes leftover after parsing attributes in process `syz-executor.4'.
netlink: 4 bytes leftover after parsing attributes in process `syz-executor.2'.
netlink: 4 bytes leftover after parsing attributes in process `syz-executor.2'.
netlink: 4 bytes leftover after parsing attributes in process `syz-executor.2'.
netlink: 4 bytes leftover after parsing attributes in process `syz-executor.2'.
netlink: 4 bytes leftover after parsing attributes in process `syz-executor.2'.
random: crng reseeded on system resumption
Restarting kernel threads ...
Done restarting kernel threads.
random: crng reseeded on system resumption
Restarting kernel threads ...
Done restarting kernel threads.
random: crng reseeded on system resumption
Restarting kernel threads ...
Done restarting kernel threads.