===================================== WARNING: bad unlock balance detected! 6.19.0-rc5-next-20260114 #1 Not tainted ------------------------------------- syz-executor.6/4338 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.6/4338: #0: ffff88800f7c03f8 (sb_writers#3){.+.+}-{0:0}, at: filename_create+0xf7/0x400 #1: ffff88804d998d68 (&type->i_mutex_dir_key#3/1){+.+.}-{4:4}, at: filename_create+0x1b1/0x400 #2: ffff88800f7c4950 (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: 4338 Comm: syz-executor.6 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: 0033:0x7f96e3210427 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:00007ffd86247f78 EFLAGS: 00000202 ORIG_RAX: 0000000000000058 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f96e3210427 RDX: ffffffffffffffbc RSI: 00007f96e326b00e RDI: 00007f96e326a1dd RBP: 0000000000000000 R08: 0000000000000000 R09: 00007ffd862479f0 R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000001 R13: 0000000000000000 R14: 0000000000000001 R15: 00007ffd86248040 ------------[ cut here ]------------ WARNING: kernel/rcu/tree_plugin.h:443 at __rcu_read_unlock+0x25f/0x5c0, CPU#0: syz-executor.6/4338 Modules linked in: CPU: 0 UID: 0 PID: 4338 Comm: syz-executor.6 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:ffff88804912f9a0 EFLAGS: 00010286 RAX: 00000000ffffffff RBX: ffff88801837d280 RCX: ffffffff81565a27 RDX: 0000000000000000 RSI: ffffffff81565a30 RDI: ffff88801837d67c RBP: ffff88801837d280 R08: 0000000000000000 R09: fffffbfff0ba6ffc R10: 0000000000000000 R11: 0000000000000001 R12: ffff88801837d280 R13: 0000000000000001 R14: ffffffff85c10df0 R15: ffff88804d95a938 FS: 000055555dcb9400(0000) GS:ffff8880e5343000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fa3cdf0d542 CR3: 000000004f1bc000 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: 0033:0x7f96e3210427 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:00007ffd86247f78 EFLAGS: 00000202 ORIG_RAX: 0000000000000058 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f96e3210427 RDX: ffffffffffffffbc RSI: 00007f96e326b00e RDI: 00007f96e326a1dd RBP: 0000000000000000 R08: 0000000000000000 R09: 00007ffd862479f0 R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000001 R13: 0000000000000000 R14: 0000000000000001 R15: 00007ffd86248040 irq event stamp: 681 hardirqs last enabled at (681): [] _raw_spin_unlock_irqrestore+0x2c/0x50 hardirqs last disabled at (680): [] _raw_spin_lock_irqsave+0x53/0x60 softirqs last enabled at (676): [] kernel_fpu_end+0x59/0x70 softirqs last disabled at (674): [] kernel_fpu_begin_mask+0x1bb/0x300 ---[ end trace 0000000000000000 ]--- Bluetooth: hci4: Controller not accepting commands anymore: ncmd = 0 Bluetooth: hci4: Injecting HCI hardware error event Bluetooth: hci4: hardware error 0x00 Bluetooth: hci5: Controller not accepting commands anymore: ncmd = 0 Bluetooth: hci5: Injecting HCI hardware error event Bluetooth: hci5: hardware error 0x00 Bluetooth: hci3: Controller not accepting commands anymore: ncmd = 0 Bluetooth: hci3: Injecting HCI hardware error event Bluetooth: hci3: hardware error 0x00 Bluetooth: hci4: Opcode 0x0c03 failed: -110 Bluetooth: hci5: Opcode 0x0c03 failed: -110 Bluetooth: hci3: Opcode 0x0c03 failed: -110 loop5: detected capacity change from 0 to 1024 EXT4-fs (loop5): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: none. ext4 filesystem being mounted at /syzkaller-testdir849341570/syzkaller.z4nCuw/38/file0 supports timestamps until 2038-01-19 (0x7fffffff) EXT4-fs (loop5): unmounting filesystem 00000000-0000-0000-0000-000000000000. loop5: detected capacity change from 0 to 1024 EXT4-fs (loop5): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: none. ext4 filesystem being mounted at /syzkaller-testdir849341570/syzkaller.z4nCuw/39/file0 supports timestamps until 2038-01-19 (0x7fffffff) EXT4-fs (loop5): unmounting filesystem 00000000-0000-0000-0000-000000000000. 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: 4530 Comm: syz-executor.7 Tainted: G W 6.19.0-rc5-next-20260114 #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+0x17c5/0x25b0 alloc_pages_mpol+0xed/0x340 alloc_pages_noprof+0xa1/0x380 kimage_alloc_pages+0x70/0x240 kimage_alloc_control_pages+0x18f/0x970 do_kexec_load+0x2c1/0xa50 __x64_sys_kexec_load+0x1c6/0x230 do_syscall_64+0xbf/0x420 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f944928cb19 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:00007f9446802188 EFLAGS: 00000246 ORIG_RAX: 00000000000000f6 RAX: ffffffffffffffda RBX: 00007f944939ff60 RCX: 00007f944928cb19 RDX: 0000000020000140 RSI: 0000000000000002 RDI: 0000000000000000 RBP: 00007f94492e6f6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffc29ca8cef R14: 00007f9446802300 R15: 0000000000022000 Mem-Info: active_anon:55 inactive_anon:67285 isolated_anon:0 active_file:9196 inactive_file:39327 isolated_file:32 unevictable:0 dirty:88 writeback:21 slab_reclaimable:5610 slab_unreclaimable:50848 mapped:80779 shmem:105 pagetables:1336 sec_pagetables:0 bounce:0 kernel_misc_reclaimable:0 free:5876 free_pcp:291 free_cma:0 Node 0 active_anon:220kB inactive_anon:269140kB active_file:36784kB inactive_file:156520kB unevictable:0kB isolated(anon):0kB isolated(file):756kB mapped:323032kB dirty:436kB writeback:84kB shmem:420kB kernel_stack:4928kB pagetables:5344kB sec_pagetables:0kB all_unreclaimable? no Balloon:0kB Node 0 DMA free:6428kB boost:0kB min:44kB low:56kB high:68kB reserved_highatomic:0KB free_highatomic:0KB active_anon:0kB inactive_anon:0kB active_file:0kB inactive_file:0kB 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:16916kB boost:6144kB min:11212kB low:12832kB high:14452kB reserved_highatomic:0KB free_highatomic:0KB active_anon:220kB inactive_anon:269140kB active_file:36784kB inactive_file:156604kB unevictable:0kB writepending:352kB zspages:0kB present:2080640kB managed:1635456kB mlocked:0kB bounce:0kB free_pcp:1072kB local_pcp:292kB free_cma:0kB lowmem_reserve[]: 0 0 0 0 Node 0 DMA: 3*4kB (UME) 2*8kB (ME) 2*16kB (ME) 3*32kB (UME) 2*64kB (ME) 2*128kB (ME) 3*256kB (UME) 2*512kB (ME) 2*1024kB (ME) 1*2048kB (E) 0*4096kB = 6428kB Node 0 DMA32: 357*4kB (UME) 159*8kB (UME) 74*16kB (UME) 64*32kB (UME) 43*64kB (UME) 19*128kB (M) 8*256kB (M) 4*512kB (UM) 1*1024kB (U) 1*2048kB (M) 0*4096kB = 18284kB Node 0 hugepages_total=0 hugepages_free=0 hugepages_surp=0 hugepages_size=2048kB 45389 total pagecache pages 0 pages in swap cache Free swap = 0kB Total swap = 0kB 524158 pages RAM 0 pages HighMem/MovableOnly 111454 pages reserved Memory cgroup min protection 0kB -- low protection 2160kB kexec: Could not allocate control_code_buffer kexec: Could not allocate control_code_buffer loop5: detected capacity change from 0 to 1024 EXT4-fs (loop5): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: none. ext4 filesystem being mounted at /syzkaller-testdir849341570/syzkaller.z4nCuw/40/file0 supports timestamps until 2038-01-19 (0x7fffffff) EXT4-fs (loop5): unmounting filesystem 00000000-0000-0000-0000-000000000000. loop5: detected capacity change from 0 to 1024 EXT4-fs (loop5): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: none. ext4 filesystem being mounted at /syzkaller-testdir849341570/syzkaller.z4nCuw/41/file0 supports timestamps until 2038-01-19 (0x7fffffff) EXT4-fs (loop5): unmounting filesystem 00000000-0000-0000-0000-000000000000. kexec: Could not allocate control_code_buffer kexec: Could not allocate control_code_buffer kexec: Could not allocate control_code_buffer loop6: detected capacity change from 0 to 512 EXT4-fs (loop6): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: none.