===================================== WARNING: bad unlock balance detected! 6.19.0-rc5-next-20260116 #1 Not tainted ------------------------------------- syz-executor.3/4038 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.3/4038: #0: ffff88800f8323f8 (sb_writers#3){.+.+}-{0:0}, at: filename_create+0xf7/0x400 #1: ffff888044de6330 (&type->i_mutex_dir_key#3/1){+.+.}-{4:4}, at: filename_create+0x1b1/0x400 #2: ffff88800f836950 (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: 4038 Comm: syz-executor.3 Not tainted 6.19.0-rc5-next-20260116 #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 filename_symlinkat+0x158/0x440 __x64_sys_symlink+0x82/0x110 do_syscall_64+0xbf/0x420 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f9e46810427 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:00007ffd72ec75d8 EFLAGS: 00000206 ORIG_RAX: 0000000000000058 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f9e46810427 RDX: 00007ffd72ec76b3 RSI: 00007f9e4686b02f RDI: 00007ffd72ec76a0 RBP: 0000000000000000 R08: 0000000000000000 R09: 00007ffd72ec7470 R10: 00007ffd72ec7327 R11: 0000000000000206 R12: 0000000000000001 R13: 0000000000000001 R14: 0000000000000001 R15: 00007ffd72ec76a0 ------------[ cut here ]------------ WARNING: kernel/rcu/tree_plugin.h:443 at __rcu_read_unlock+0x25f/0x5c0, CPU#1: syz-executor.3/4038 Modules linked in: CPU: 1 UID: 0 PID: 4038 Comm: syz-executor.3 Not tainted 6.19.0-rc5-next-20260116 #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 d6 b7 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 4d 74 03 e8 2c 5d 56 00 e9 RSP: 0018:ffff88804bf5f9a0 EFLAGS: 00010286 RAX: 00000000ffffffff RBX: ffff88804a3f5280 RCX: ffffffff815660f7 RDX: 0000000000000000 RSI: ffffffff81566100 RDI: ffff88804a3f567c RBP: ffff88804a3f5280 R08: 0000000000000000 R09: fffffbfff0ba7040 R10: 0000000000000000 R11: 0000000000000001 R12: ffff88804a3f5280 R13: 0000000000000001 R14: ffffffff85c0c2a0 R15: ffff888044df58e0 FS: 0000555591062400(0000) GS:ffff8880e5442000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f9e46890543 CR3: 000000004e99b000 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 filename_symlinkat+0x158/0x440 __x64_sys_symlink+0x82/0x110 do_syscall_64+0xbf/0x420 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f9e46810427 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:00007ffd72ec75d8 EFLAGS: 00000206 ORIG_RAX: 0000000000000058 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f9e46810427 RDX: 00007ffd72ec76b3 RSI: 00007f9e4686b02f RDI: 00007ffd72ec76a0 RBP: 0000000000000000 R08: 0000000000000000 R09: 00007ffd72ec7470 R10: 00007ffd72ec7327 R11: 0000000000000206 R12: 0000000000000001 R13: 0000000000000001 R14: 0000000000000001 R15: 00007ffd72ec76a0 irq event stamp: 581 hardirqs last enabled at (581): [] _raw_spin_unlock_irqrestore+0x2c/0x50 hardirqs last disabled at (580): [] _raw_spin_lock_irqsave+0x53/0x60 softirqs last enabled at (576): [] kernel_fpu_end+0x59/0x70 softirqs last disabled at (574): [] kernel_fpu_begin_mask+0x1bb/0x300 ---[ end trace 0000000000000000 ]--- process 'syz-executor.7' launched './file1' with NULL argv: empty string added blktrace: Concurrent blktraces are not allowed on sg0 blktrace: Concurrent blktraces are not allowed on sg0 blktrace: Concurrent blktraces are not allowed on sg0 audit: type=1400 audit(1768573063.579:11): avc: denied { watch_reads } for pid=4168 comm="syz-executor.4" path="/syzkaller-testdir261818896/syzkaller.vVNMQV/13/file0" dev="sda" ino=15986 scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:object_r:unlabeled_t:s0 tclass=dir permissive=1 Bluetooth: hci2: Controller not accepting commands anymore: ncmd = 0 Bluetooth: hci2: Injecting HCI hardware error event Bluetooth: hci2: hardware error 0x00 loop4: detected capacity change from 0 to 8 netlink: 16 bytes leftover after parsing attributes in process `syz-executor.0'. FAT-fs (loop4): Invalid FSINFO signature: 0x00000000, 0x00000000 (sector = 1) FAT-fs (loop4): IO charset macturkish not found loop4: detected capacity change from 0 to 8 FAT-fs (loop4): Invalid FSINFO signature: 0x00000000, 0x00000000 (sector = 1) FAT-fs (loop4): IO charset macturkish not found loop4: detected capacity change from 0 to 8 FAT-fs (loop4): Invalid FSINFO signature: 0x00000000, 0x00000000 (sector = 1) FAT-fs (loop4): IO charset macturkish not found UDPLite6: UDP-Lite is deprecated and scheduled to be removed in 2025, please contact the netdev mailing list loop4: detected capacity change from 0 to 8 FAT-fs (loop4): Invalid FSINFO signature: 0x00000000, 0x00000000 (sector = 1) FAT-fs (loop4): IO charset macturkish not found loop4: detected capacity change from 0 to 8 FAT-fs (loop4): Invalid FSINFO signature: 0x00000000, 0x00000000 (sector = 1) FAT-fs (loop4): IO charset macturkish not found Bluetooth: hci5: Controller not accepting commands anymore: ncmd = 0 Bluetooth: hci5: Injecting HCI hardware error event Bluetooth: hci5: hardware error 0x00 Bluetooth: hci4: Controller not accepting commands anymore: ncmd = 0 Bluetooth: hci4: Injecting HCI hardware error event Bluetooth: hci4: hardware error 0x00 loop0: detected capacity change from 0 to 128 Bluetooth: hci2: Opcode 0x0c03 failed: -110 syz-executor.0: page allocation failure: order:0, mode:0x10cc0(GFP_KERNEL|__GFP_NORETRY), nodemask=(null),cpuset=/,mems_allowed=0 CPU: 0 UID: 0 PID: 4378 Comm: syz-executor.0 Tainted: G W 6.19.0-rc5-next-20260116 #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: 0033:0x7f3465748b19 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:00007f3462cbe188 EFLAGS: 00000246 ORIG_RAX: 00000000000000f6 RAX: ffffffffffffffda RBX: 00007f346585bf60 RCX: 00007f3465748b19 RDX: 0000000020000040 RSI: 0000000000000010 RDI: 0000000000000000 RBP: 00007f34657a2f6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fffc5d85c9f R14: 00007f3462cbe300 R15: 0000000000022000 Mem-Info: active_anon:57 inactive_anon:62794 isolated_anon:0 active_file:9230 inactive_file:38162 isolated_file:91 unevictable:0 dirty:90 writeback:21 slab_reclaimable:5665 slab_unreclaimable:51629 mapped:80818 shmem:112 pagetables:1338 sec_pagetables:0 bounce:0 kernel_misc_reclaimable:0 free:5692 free_pcp:86 free_cma:0 Node 0 active_anon:228kB inactive_anon:251176kB active_file:36920kB inactive_file:150420kB unevictable:0kB isolated(anon):0kB isolated(file):260kB mapped:323272kB dirty:276kB writeback:84kB shmem:448kB kernel_stack:4704kB pagetables:5352kB 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: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:19052kB boost:12460kB min:17528kB low:19148kB high:20768kB reserved_highatomic:0KB free_highatomic:0KB active_anon:228kB inactive_anon:251176kB active_file:37256kB inactive_file:148612kB unevictable:0kB writepending:276kB zspages:0kB present:2080640kB managed:1635448kB mlocked:0kB bounce:0kB free_pcp:1592kB local_pcp:1168kB free_cma:0kB lowmem_reserve[]: 0 0 0 0 Node 0 DMA: 0*4kB 0*8kB 2*16kB (U) 0*32kB 0*64kB 0*128kB 1*256kB (U) 0*512kB 0*1024kB 1*2048kB (M) 1*4096kB (M) = 6432kB Node 0 DMA32: 521*4kB (UM) 197*8kB (ME) 90*16kB (ME) 70*32kB (UME) 54*64kB (ME) 32*128kB (M) 14*256kB (M) 4*512kB (UM) 0*1024kB 0*2048kB 0*4096kB = 20524kB Node 0 hugepages_total=0 hugepages_free=0 hugepages_surp=0 hugepages_size=2048kB 44693 total pagecache pages 0 pages in swap cache Free swap = 0kB Total swap = 0kB 524158 pages RAM 0 pages HighMem/MovableOnly 111456 pages reserved Memory cgroup min protection 0kB -- low protection 2712kB kexec: Could not allocate control_code_buffer loop0: detected capacity change from 0 to 128 EXT4-fs warning (device sda): ext4_group_extend:1870: need to use ext2online to resize further Bluetooth: hci5: Opcode 0x0c03 failed: -110 kexec: Could not allocate control_code_buffer Bluetooth: hci4: Opcode 0x0c03 failed: -110 loop0: detected capacity change from 0 to 128 EXT4-fs warning (device sda): ext4_group_extend:1870: need to use ext2online to resize further ======================================================= WARNING: The mand mount option has been deprecated and and is ignored by this kernel. Remove the mand option from the mount to silence this warning. ======================================================= EXT4-fs warning (device sda): ext4_group_extend:1870: need to use ext2online to resize further kexec: Could not allocate control_code_buffer loop0: detected capacity change from 0 to 128 EXT4-fs warning (device sda): ext4_group_extend:1870: need to use ext2online to resize further kexec: Could not allocate control_code_buffer loop3: detected capacity change from 0 to 4 EXT4-fs (loop3): #blocks per group too big: 8448 blktrace: Concurrent blktraces are not allowed on sg0 loop3: detected capacity change from 0 to 4 EXT4-fs (loop3): #blocks per group too big: 8448 loop3: detected capacity change from 0 to 4 EXT4-fs (loop3): #blocks per group too big: 8448 program syz-executor.5 is using a deprecated SCSI ioctl, please convert it to SG_IO loop3: detected capacity change from 0 to 4 EXT4-fs (loop3): #blocks per group too big: 8448 program syz-executor.5 is using a deprecated SCSI ioctl, please convert it to SG_IO program syz-executor.5 is using a deprecated SCSI ioctl, please convert it to SG_IO blktrace: Concurrent blktraces are not allowed on sg0 blktrace: Concurrent blktraces are not allowed on sg0 audit: type=1400 audit(1768573069.888:12): avc: denied { tracepoint } for pid=4587 comm="syz-executor.3" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=perf_event permissive=1 program syz-executor.5 is using a deprecated SCSI ioctl, please convert it to SG_IO blktrace: Concurrent blktraces are not allowed on sg0 blktrace: Concurrent blktraces are not allowed on sg0