===================================== WARNING: bad unlock balance detected! 6.19.0-rc5-next-20260113 #1 Not tainted ------------------------------------- syz-executor.1/282 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.1/282: #0: ffff88800f5a23f8 (sb_writers#3){.+.+}-{0:0}, at: filename_create+0xf7/0x400 #1: ffff88801b616330 (&type->i_mutex_dir_key#3/1){+.+.}-{4:4}, at: filename_create+0x1b1/0x400 #2: ffff88800f5a6950 (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: 282 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: 0033:0x7f53a9f8ac27 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:00007fff049b0538 EFLAGS: 00000202 ORIG_RAX: 0000000000000053 RAX: ffffffffffffffda RBX: 00007fff049b05c0 RCX: 00007f53a9f8ac27 RDX: 0000000000000000 RSI: 00000000000001ff RDI: 00007fff049b05c0 RBP: 00007fff049b059c R08: 0000000000000000 R09: 0000000000000004 R10: 00007fff049b02d6 R11: 0000000000000202 R12: 0000000000000032 R13: 000000000002f026 R14: 000000000000000e R15: 00007fff049b0600 ------------[ cut here ]------------ WARNING: kernel/rcu/tree_plugin.h:443 at __rcu_read_unlock+0x25f/0x5c0, CPU#1: syz-executor.1/282 Modules linked in: CPU: 1 UID: 0 PID: 282 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:ffff88801b9f79e0 EFLAGS: 00010286 RAX: 00000000ffffffff RBX: ffff888016060000 RCX: ffffffff815664c7 RDX: 0000000000000000 RSI: ffffffff815664d0 RDI: ffff8880160603fc RBP: ffff888016060000 R08: 0000000000000000 R09: fffffbfff0ba6ff4 R10: 0000000000000000 R11: 0000000000000001 R12: ffff888016060000 R13: 0000000000000001 R14: ffffffff85c0df10 R15: ffff88804ac78318 FS: 00005555812c9400(0000) GS:ffff8880e5442000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000555581066c58 CR3: 000000001ea50000 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: 0033:0x7f53a9f8ac27 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:00007fff049b0538 EFLAGS: 00000202 ORIG_RAX: 0000000000000053 RAX: ffffffffffffffda RBX: 00007fff049b05c0 RCX: 00007f53a9f8ac27 RDX: 0000000000000000 RSI: 00000000000001ff RDI: 00007fff049b05c0 RBP: 00007fff049b059c R08: 0000000000000000 R09: 0000000000000004 R10: 00007fff049b02d6 R11: 0000000000000202 R12: 0000000000000032 R13: 000000000002f026 R14: 000000000000000e R15: 00007fff049b0600 irq event stamp: 255805 hardirqs last enabled at (255805): [] irqentry_exit+0x17b/0x650 hardirqs last disabled at (255804): [] sysvec_apic_timer_interrupt+0xf/0x80 softirqs last enabled at (255798): [] kernel_fpu_end+0x59/0x70 softirqs last disabled at (255796): [] kernel_fpu_begin_mask+0x1bb/0x300 ---[ end trace 0000000000000000 ]--- Invalid option length (1048019) for dns_resolver key loop1: detected capacity change from 0 to 1024 ext4: Unknown parameter ' k6_$Ӛo(YJ풁 ' 9p: Bad value for 'rfdno' Invalid option length (1048019) for dns_resolver key Invalid option length (1048019) for dns_resolver key syz-executor.0 (4314) used greatest stack depth: 23480 bytes left loop1: detected capacity change from 0 to 1024 Invalid option length (1048019) for dns_resolver key ext4: Unknown parameter ' k6_$Ӛo(YJ풁 ' loop2: detected capacity change from 0 to 127 9p: Bad value for 'rfdno' vfat: Unknown parameter 'shortnrtname' loop2: detected capacity change from 0 to 127 Invalid option length (1048019) for dns_resolver key vfat: Unknown parameter 'shortnrtname' loop1: detected capacity change from 0 to 1024 ext4: Unknown parameter ' k6_$Ӛo(YJ풁 ' Invalid option length (1048019) for dns_resolver key Invalid option length (1048019) for dns_resolver key 9p: Bad value for 'rfdno' mmap: syz-executor.3 (4373) uses deprecated remap_file_pages() syscall. See Documentation/mm/remap_file_pages.rst. loop1: detected capacity change from 0 to 1024 ext4: Unknown parameter ' k6_$Ӛo(YJ풁 ' Invalid option length (1048019) for dns_resolver key loop2: detected capacity change from 0 to 1024 9p: Bad value for 'rfdno' ext4: Unknown parameter ' k6_$Ӛo(YJ풁 ' Invalid option length (1048019) for dns_resolver key 9p: Bad value for 'rfdno'