===================================== WARNING: bad unlock balance detected! 6.19.0-rc5-next-20260113 #1 Not tainted ------------------------------------- syz-executor.4/8515 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.4/8515: #0: ffff88800f8ca3f8 (sb_writers#3){.+.+}-{0:0}, at: filename_create+0xf7/0x400 #1: ffff88801a524698 (&type->i_mutex_dir_key#3/1){+.+.}-{4:4}, at: filename_create+0x1b1/0x400 #2: ffff88800f8ce950 (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: 8515 Comm: syz-executor.4 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_symlink+0x406/0xb40 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: 0033:0x7fcf0aa66427 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:00007ffff06534b8 EFLAGS: 00000206 ORIG_RAX: 0000000000000058 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fcf0aa66427 RDX: 00007ffff0653593 RSI: 00007fcf0aac1022 RDI: 00007ffff0653580 RBP: 0000000000000000 R08: 0000000000000000 R09: 00007ffff0653350 R10: 00007ffff0653207 R11: 0000000000000206 R12: 0000000000000001 R13: 0000000000000001 R14: 0000000000000001 R15: 00007ffff0653580 ------------[ cut here ]------------ WARNING: kernel/rcu/tree_plugin.h:443 at __rcu_read_unlock+0x25f/0x5c0, CPU#0: syz-executor.4/8515 Modules linked in: CPU: 0 UID: 0 PID: 8515 Comm: syz-executor.4 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:ffff88804bd4f9a0 EFLAGS: 00010286 RAX: 00000000ffffffff RBX: ffff88804b2a3700 RCX: ffffffff815664c7 RDX: 0000000000000000 RSI: ffffffff815664d0 RDI: ffff88804b2a3afc RBP: ffff88804b2a3700 R08: 0000000000000000 R09: fffffbfff0ba6ff4 R10: 0000000000000000 R11: 0000000000000001 R12: ffff88804b2a3700 R13: 0000000000000001 R14: ffffffff85c0c610 R15: ffff888009659fb0 FS: 0000555557d60400(0000) GS:ffff8880e5342000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000055587796b180 CR3: 0000000026b52000 CR4: 0000000000350ef0 Call Trace: __wait_on_freeing_inode+0x10f/0x350 insert_inode_locked+0x25f/0x890 __ext4_new_inode+0x223d/0x4cd0 ext4_symlink+0x406/0xb40 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: 0033:0x7fcf0aa66427 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:00007ffff06534b8 EFLAGS: 00000206 ORIG_RAX: 0000000000000058 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fcf0aa66427 RDX: 00007ffff0653593 RSI: 00007fcf0aac1022 RDI: 00007ffff0653580 RBP: 0000000000000000 R08: 0000000000000000 R09: 00007ffff0653350 R10: 00007ffff0653207 R11: 0000000000000206 R12: 0000000000000001 R13: 0000000000000001 R14: 0000000000000001 R15: 00007ffff0653580 irq event stamp: 697 hardirqs last enabled at (697): [] _raw_spin_unlock_irqrestore+0x2c/0x50 hardirqs last disabled at (696): [] _raw_spin_lock_irqsave+0x53/0x60 softirqs last enabled at (692): [] kernel_fpu_end+0x59/0x70 softirqs last disabled at (690): [] kernel_fpu_begin_mask+0x1bb/0x300 ---[ end trace 0000000000000000 ]--- syz-executor.7: page allocation failure: order:0, mode:0x10cc0(GFP_KERNEL|__GFP_NORETRY), nodemask=(null),cpuset=/,mems_allowed=0 CPU: 1 UID: 0 PID: 8487 Comm: syz-executor.7 Tainted: G W 6.19.0-rc5-next-20260113 #1 PREEMPT(lazy) Tainted: [W]=WARN Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 Call Trace: dump_stack_lvl+0xfa/0x120 warn_alloc+0x211/0x370 __alloc_frozen_pages_noprof+0x1782/0x2070 alloc_pages_mpol+0xed/0x340 alloc_pages_noprof+0xa1/0x380 kimage_alloc_pages+0x70/0x240 kimage_alloc_control_pages+0x18f/0x970 do_kexec_load+0x4ab/0xa50 __x64_sys_kexec_load+0x1c6/0x230 do_syscall_64+0xbf/0x420 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7ff1bcf79b19 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 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:00007ff1ba4ef188 EFLAGS: 00000246 ORIG_RAX: 00000000000000f6 RAX: ffffffffffffffda RBX: 00007ff1bd08cf60 RCX: 00007ff1bcf79b19 RDX: 0000000020000040 RSI: 0000000000000010 RDI: 000000000a524fff RBP: 00007ff1bcfd3f6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffff67e58ff R14: 00007ff1ba4ef300 R15: 0000000000022000 Mem-Info: active_anon:446 inactive_anon:52168 isolated_anon:0 active_file:11102 inactive_file:20211 isolated_file:9 unevictable:0 dirty:442 writeback:0 slab_reclaimable:3809 slab_unreclaimable:52364 mapped:75578 shmem:94 pagetables:2106 sec_pagetables:0 bounce:0 kernel_misc_reclaimable:0 free:4267 free_pcp:754 free_cma:0 Node 0 active_anon:1784kB inactive_anon:208756kB active_file:44408kB inactive_file:80844kB unevictable:0kB isolated(anon):0kB isolated(file):36kB mapped:302312kB dirty:1768kB writeback:0kB shmem:376kB kernel_stack:5248kB pagetables:8424kB sec_pagetables:0kB all_unreclaimable? no Balloon:0kB Node 0 DMA free:6432kB boost:0kB min:44kB low:56kB high:68kB reserved_highatomic:0KB free_highatomic:0KB active_anon:0kB inactive_anon:4kB active_file:52kB inactive_file:92kB unevictable:0kB writepending:0kB zspages:0kB present:15992kB managed:15360kB mlocked:0kB bounce:0kB free_pcp:0kB local_pcp:0kB free_cma:0kB lowmem_reserve[]: 0 1597 1597 1597 Node 0 DMA32 free:10384kB boost:0kB min:5068kB low:6688kB high:8308kB reserved_highatomic:0KB free_highatomic:0KB active_anon:1784kB inactive_anon:208920kB active_file:44440kB inactive_file:80752kB unevictable:0kB writepending:1768kB zspages:0kB present:2080640kB managed:1635468kB mlocked:0kB bounce:0kB free_pcp:2696kB local_pcp:2320kB free_cma:0kB lowmem_reserve[]: 0 0 0 0 Node 0 DMA: 2*4kB (M) 10*8kB (UME) 9*16kB (ME) 2*32kB (UM) 4*64kB (UME) 4*128kB (UME) 3*256kB (UME) 1*512kB (E) 2*1024kB (ME) 1*2048kB (E) 0*4096kB = 6440kB Node 0 DMA32: 2*4kB (UE) 88*8kB (UME) 73*16kB (UME) 48*32kB (UME) 17*64kB (UME) 15*128kB (UME) 6*256kB (UME) 2*512kB (U) 1*1024kB (U) 0*2048kB 0*4096kB = 10008kB Node 0 hugepages_total=0 hugepages_free=0 hugepages_surp=0 hugepages_size=2048kB 31439 total pagecache pages 0 pages in swap cache Free swap = 0kB Total swap = 0kB 524158 pages RAM 0 pages HighMem/MovableOnly 111451 pages reserved Memory cgroup min protection 0kB -- low protection 95104kB kexec: Could not allocate control_code_buffer loop7: detected capacity change from 0 to 128 kexec: Could not allocate control_code_buffer