===================================== WARNING: bad unlock balance detected! 6.19.0-rc5-next-20260113 #1 Not tainted ------------------------------------- syz-executor.1/286 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.1/286: #0: ffff88800f53c3f8 (sb_writers#3){.+.+}-{0:0}, at: filename_create+0xf7/0x400 #1: ffff88801b576cb8 (&type->i_mutex_dir_key#3/1){+.+.}-{4:4}, at: filename_create+0x1b1/0x400 #2: ffff88800f970950 (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: 286 Comm: syz-executor.1 Not tainted 6.19.0-rc5-next-20260113 #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_mkdir+0x331/0xb30 vfs_mkdir+0x6d8/0xc00 do_mkdirat+0x11a/0x440 __x64_sys_mkdir+0x65/0x80 do_syscall_64+0xbf/0x420 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f9b264f6c27 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 53 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:00007ffd5425d8f8 EFLAGS: 00000202 ORIG_RAX: 0000000000000053 RAX: ffffffffffffffda RBX: 00007ffd5425d980 RCX: 00007f9b264f6c27 RDX: 0000000000000000 RSI: 00000000000001ff RDI: 00007ffd5425d980 RBP: 00007ffd5425d95c R08: 0000000000000000 R09: 0000000000000004 R10: 00007ffd5425d696 R11: 0000000000000202 R12: 0000000000000032 R13: 000000000001a662 R14: 0000000000000003 R15: 00007ffd5425d9c0 ------------[ cut here ]------------ WARNING: kernel/rcu/tree_plugin.h:443 at __rcu_read_unlock+0x25f/0x5c0, CPU#1: syz-executor.1/286 Modules linked in: CPU: 1 UID: 0 PID: 286 Comm: syz-executor.1 Not tainted 6.19.0-rc5-next-20260113 #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 a6 bb de ff 4d 85 f6 0f 84 73 fe ff ff e8 38 89 20 00 fb e9 68 fe ff ff 90 <0f> 0b 90 5b 5d 41 5c 41 5d 41 5e e9 61 f9 73 03 e8 0c 88 56 00 e9 RSP: 0018:ffff88801ac579e0 EFLAGS: 00010286 RAX: 00000000ffffffff RBX: ffff88801abc5280 RCX: ffffffff815664c7 RDX: 0000000000000000 RSI: ffffffff815664d0 RDI: ffff88801abc567c RBP: ffff88801abc5280 R08: 0000000000000000 R09: fffffbfff0ba6ff4 R10: 0000000000000000 R11: 0000000000000001 R12: ffff88801abc5280 R13: 0000000000000001 R14: ffffffff85c0c340 R15: ffff88801b52ebf0 FS: 0000555592998400(0000) GS:ffff8880e5442000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ffd5425bff8 CR3: 000000000daae000 CR4: 0000000000350ef0 Call Trace: __wait_on_freeing_inode+0x10f/0x350 insert_inode_locked+0x25f/0x890 __ext4_new_inode+0x223d/0x4cd0 ext4_mkdir+0x331/0xb30 vfs_mkdir+0x6d8/0xc00 do_mkdirat+0x11a/0x440 __x64_sys_mkdir+0x65/0x80 do_syscall_64+0xbf/0x420 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f9b264f6c27 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 53 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:00007ffd5425d8f8 EFLAGS: 00000202 ORIG_RAX: 0000000000000053 RAX: ffffffffffffffda RBX: 00007ffd5425d980 RCX: 00007f9b264f6c27 RDX: 0000000000000000 RSI: 00000000000001ff RDI: 00007ffd5425d980 RBP: 00007ffd5425d95c R08: 0000000000000000 R09: 0000000000000004 R10: 00007ffd5425d696 R11: 0000000000000202 R12: 0000000000000032 R13: 000000000001a662 R14: 0000000000000003 R15: 00007ffd5425d9c0 irq event stamp: 225887 hardirqs last enabled at (225887): [] _raw_spin_unlock_irqrestore+0x2c/0x50 hardirqs last disabled at (225886): [] _raw_spin_lock_irqsave+0x53/0x60 softirqs last enabled at (225882): [] do_softirq+0x48/0x80 softirqs last disabled at (224939): [] do_softirq+0x48/0x80 ---[ end trace 0000000000000000 ]--- netlink: 'syz-executor.5': attribute type 10 has an invalid length. netlink: 'syz-executor.5': attribute type 10 has an invalid length. netlink: 'syz-executor.5': attribute type 10 has an invalid length. netlink: 'syz-executor.5': attribute type 10 has an invalid length. netlink: 'syz-executor.5': attribute type 10 has an invalid length. random: crng reseeded on system resumption Unrecognized hibernate image header format! PM: hibernation: Image mismatch: architecture specific data random: crng reseeded on system resumption Unrecognized hibernate image header format! PM: hibernation: Image mismatch: architecture specific data random: crng reseeded on system resumption Unrecognized hibernate image header format! PM: hibernation: Image mismatch: architecture specific data random: crng reseeded on system resumption Unrecognized hibernate image header format! PM: hibernation: Image mismatch: architecture specific data random: crng reseeded on system resumption Unrecognized hibernate image header format! PM: hibernation: Image mismatch: architecture specific data random: crng reseeded on system resumption Unrecognized hibernate image header format! PM: hibernation: Image mismatch: architecture specific data random: crng reseeded on system resumption Unrecognized hibernate image header format! PM: hibernation: Image mismatch: architecture specific data random: crng reseeded on system resumption Unrecognized hibernate image header format! PM: hibernation: Image mismatch: architecture specific data FAT-fs (loop6): Invalid FSINFO signature: 0x00000000, 0x00000000 (sector = 1) perf: interrupt took too long (2507 > 2500), lowering kernel.perf_event_max_sample_rate to 79000 perf: interrupt took too long (3951 > 3945), lowering kernel.perf_event_max_sample_rate to 50000 perf: interrupt took too long (4944 > 4938), lowering kernel.perf_event_max_sample_rate to 40000 perf: interrupt took too long (6185 > 6180), lowering kernel.perf_event_max_sample_rate to 32000 rfkill: input handler disabled rfkill: input handler enabled rfkill: input handler disabled rfkill: input handler enabled rfkill: input handler disabled rfkill: input handler enabled rfkill: input handler disabled rfkill: input handler enabled rfkill: input handler disabled rfkill: input handler enabled rfkill: input handler disabled rfkill: input handler enabled rfkill: input handler disabled rfkill: input handler enabled rfkill: input handler disabled rfkill: input handler enabled UDPLite6: UDP-Lite is deprecated and scheduled to be removed in 2025, please contact the netdev mailing list netlink: 28 bytes leftover after parsing attributes in process `syz-executor.7'. netlink: 28 bytes leftover after parsing attributes in process `syz-executor.3'. netlink: 28 bytes leftover after parsing attributes in process `syz-executor.7'. netlink: 28 bytes leftover after parsing attributes in process `syz-executor.3'. netlink: 28 bytes leftover after parsing attributes in process `syz-executor.6'. Bluetooth: hci2: unexpected cc 0x0c03 length: 249 > 1 Bluetooth: hci2: unexpected cc 0x1003 length: 249 > 9 Bluetooth: hci2: unexpected cc 0x1001 length: 249 > 9 Bluetooth: hci2: unexpected cc 0x0c23 length: 249 > 4 Bluetooth: hci2: unexpected cc 0x0c38 length: 249 > 2 Bluetooth: hci2: command tx timeout