===================================== WARNING: bad unlock balance detected! 6.19.0-rc5-next-20260114 #1 Not tainted ------------------------------------- syz-executor.2/4746 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.2/4746: #0: ffff88800f7fa3f8 (sb_writers#3){.+.+}-{0:0}, at: filename_create+0xf7/0x400 #1: ffff8880564c4698 (&type->i_mutex_dir_key#3/1){+.+.}-{4:4}, at: filename_create+0x1b1/0x400 #2: ffff88800f6ce950 (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: 4746 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: 0033:0x7f92e396f427 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:00007ffc161570c8 EFLAGS: 00000202 ORIG_RAX: 0000000000000058 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f92e396f427 RDX: 00007ffc161571a7 RSI: 00007f92e39ca019 RDI: 00007ffc16157190 RBP: 0000000000000000 R08: 0000000000000000 R09: 00007ffc16156f60 R10: 00007ffc16156e17 R11: 0000000000000202 R12: 0000000000000001 R13: 0000000000000001 R14: 0000000000000001 R15: 00007ffc16157190 ------------[ cut here ]------------ WARNING: kernel/rcu/tree_plugin.h:443 at __rcu_read_unlock+0x25f/0x5c0, CPU#1: syz-executor.2/4746 Modules linked in: CPU: 1 UID: 0 PID: 4746 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:ffff8880192cf9a0 EFLAGS: 00010286 RAX: 00000000ffffffff RBX: ffff88800f825280 RCX: ffffffff81565a27 RDX: 0000000000000000 RSI: ffffffff81565a30 RDI: ffff88800f82567c RBP: ffff88800f825280 R08: 0000000000000000 R09: fffffbfff0ba6ffc R10: 0000000000000000 R11: 0000000000000001 R12: ffff88800f825280 R13: 0000000000000001 R14: ffffffff85c0dc40 R15: ffff8880564b7578 FS: 000055556f392400(0000) GS:ffff8880e5443000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f92e39ef542 CR3: 00000000509d6000 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: 0033:0x7f92e396f427 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:00007ffc161570c8 EFLAGS: 00000202 ORIG_RAX: 0000000000000058 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f92e396f427 RDX: 00007ffc161571a7 RSI: 00007f92e39ca019 RDI: 00007ffc16157190 RBP: 0000000000000000 R08: 0000000000000000 R09: 00007ffc16156f60 R10: 00007ffc16156e17 R11: 0000000000000202 R12: 0000000000000001 R13: 0000000000000001 R14: 0000000000000001 R15: 00007ffc16157190 irq event stamp: 189 hardirqs last enabled at (189): [] _raw_spin_unlock_irqrestore+0x2c/0x50 hardirqs last disabled at (188): [] _raw_spin_lock_irqsave+0x53/0x60 softirqs last enabled at (184): [] kernel_fpu_end+0x59/0x70 softirqs last disabled at (182): [] kernel_fpu_begin_mask+0x1bb/0x300 ---[ end trace 0000000000000000 ]--- Bluetooth: hci0: Controller not accepting commands anymore: ncmd = 0 Bluetooth: hci0: Injecting HCI hardware error event Bluetooth: hci0: hardware error 0x00 loop3: detected capacity change from 0 to 608 Bluetooth: hci7: Controller not accepting commands anymore: ncmd = 0 Bluetooth: hci7: Injecting HCI hardware error event Bluetooth: hci7: hardware error 0x00 loop3: detected capacity change from 0 to 128 netlink: 20 bytes leftover after parsing attributes in process `syz-executor.4'. audit: type=1400 audit(1768379501.529:14): avc: denied { write } for pid=4885 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 netlink: 20 bytes leftover after parsing attributes in process `syz-executor.4'. netlink: 20 bytes leftover after parsing attributes in process `syz-executor.4'. faux_driver regulatory: Direct firmware load for regulatory.db failed with error -2 random: crng reseeded on system resumption netlink: 20 bytes leftover after parsing attributes in process `syz-executor.4'. faux_driver regulatory: Direct firmware load for regulatory.db failed with error -2 random: crng reseeded on system resumption syz-executor.3 (4944) used greatest stack depth: 22896 bytes left faux_driver regulatory: Direct firmware load for regulatory.db failed with error -2 random: crng reseeded on system resumption faux_driver regulatory: Direct firmware load for regulatory.db failed with error -2 faux_driver regulatory: Direct firmware load for regulatory.db failed with error -2 random: crng reseeded on system resumption random: crng reseeded on system resumption Bluetooth: hci0: Opcode 0x0c03 failed: -110 faux_driver regulatory: Direct firmware load for regulatory.db failed with error -2 random: crng reseeded on system resumption Bluetooth: hci7: Opcode 0x0c03 failed: -110 faux_driver regulatory: Direct firmware load for regulatory.db failed with error -2 random: crng reseeded on system resumption Bluetooth: hci1: Opcode 0x0c1a failed: -4 Bluetooth: hci1: Error when powering off device on rfkill (-4) Bluetooth: hci2: Opcode 0x0c1a failed: -4 Bluetooth: hci2: Error when powering off device on rfkill (-4) Bluetooth: hci3: Opcode 0x0c1a failed: -4 Bluetooth: hci3: Error when powering off device on rfkill (-4) Bluetooth: hci4: Opcode 0x0c1a failed: -4 Bluetooth: hci4: Error when powering off device on rfkill (-4) Bluetooth: hci5: Opcode 0x0c1a failed: -4 Bluetooth: hci5: Error when powering off device on rfkill (-4) Bluetooth: hci6: Opcode 0x0c1a failed: -4 Bluetooth: hci6: Error when powering off device on rfkill (-4) loop2: detected capacity change from 0 to 4096 EXT4-fs (loop2): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: none. EXT4-fs (loop2): unmounting filesystem 00000000-0000-0000-0000-000000000000. 9p: Unknown uid 00000000004294967295 9p: Unknown uid 00000000004294967295 9p: Unknown uid 00000000004294967295 9p: Unknown uid 00000000004294967295 9p: Unknown uid 00000000004294967295 UDPLite: UDP-Lite is deprecated and scheduled to be removed in 2025, please contact the netdev mailing list sr 1:0:0:0: [sr0] CDROM not ready. Make sure there is a disc in the drive. sr 1:0:0:0: [sr0] CDROM not ready. Make sure there is a disc in the drive. sr 1:0:0:0: [sr0] CDROM not ready. Make sure there is a disc in the drive. sr 1:0:0:0: [sr0] CDROM not ready. Make sure there is a disc in the drive.