===================================== WARNING: bad unlock balance detected! 6.19.0-rc5-next-20260113 #1 Not tainted ------------------------------------- syz-executor.2/273 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.2/273: #0: ffff88800f8683f8 (sb_writers#3){.+.+}-{0:0}, at: filename_create+0xf7/0x400 #1: ffff8880095eaa00 (&type->i_mutex_dir_key#3/1){+.+.}-{4:4}, at: filename_create+0x1b1/0x400 #2: ffff88800f86c950 (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: 273 Comm: syz-executor.2 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: 0033:0x7f1735884c27 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:00007ffc115ea688 EFLAGS: 00000206 ORIG_RAX: 0000000000000053 RAX: ffffffffffffffda RBX: 00007ffc115ea710 RCX: 00007f1735884c27 RDX: 0000000000000000 RSI: 00000000000001ff RDI: 00007ffc115ea710 RBP: 00007ffc115ea6ec R08: 0000000000000000 R09: 0000000000000003 R10: 00007ffc115ea427 R11: 0000000000000206 R12: 0000000000000032 R13: 00000000000219d5 R14: 0000000000000002 R15: 00007ffc115ea750 ------------[ cut here ]------------ WARNING: kernel/rcu/tree_plugin.h:443 at __rcu_read_unlock+0x25f/0x5c0, CPU#0: syz-executor.2/273 Modules linked in: CPU: 0 UID: 0 PID: 273 Comm: syz-executor.2 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:ffff88801c15f9e0 EFLAGS: 00010286 RAX: 00000000ffffffff RBX: ffff88800bb61b80 RCX: ffffffff815664c7 RDX: 0000000000000000 RSI: ffffffff815664d0 RDI: ffff88800bb61f7c RBP: ffff88800bb61b80 R08: 0000000000000000 R09: fffffbfff0ba6ff4 R10: 0000000000000000 R11: 0000000000000001 R12: ffff88800bb61b80 R13: 0000000000000001 R14: ffffffff85c0d380 R15: ffff888009620ca0 FS: 0000555585039400(0000) GS:ffff8880e5342000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ffc115e8e48 CR3: 000000000e0a8000 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: 0033:0x7f1735884c27 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:00007ffc115ea688 EFLAGS: 00000206 ORIG_RAX: 0000000000000053 RAX: ffffffffffffffda RBX: 00007ffc115ea710 RCX: 00007f1735884c27 RDX: 0000000000000000 RSI: 00000000000001ff RDI: 00007ffc115ea710 RBP: 00007ffc115ea6ec R08: 0000000000000000 R09: 0000000000000003 R10: 00007ffc115ea427 R11: 0000000000000206 R12: 0000000000000032 R13: 00000000000219d5 R14: 0000000000000002 R15: 00007ffc115ea750 irq event stamp: 190969 hardirqs last enabled at (190969): [] irqentry_exit+0x17b/0x650 hardirqs last disabled at (190968): [] sysvec_apic_timer_interrupt+0xf/0x80 softirqs last enabled at (190962): [] kernel_fpu_end+0x59/0x70 softirqs last disabled at (190960): [] kernel_fpu_begin_mask+0x1bb/0x300 ---[ end trace 0000000000000000 ]--- audit: type=1326 audit(1768298407.600:12): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=4114 comm="syz-executor.5" exe="/syz-executor.5" sig=0 arch=c000003e syscall=202 compat=0 ip=0x7f146706cb19 code=0x7ffc0000 audit: type=1326 audit(1768298407.602:13): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=4114 comm="syz-executor.5" exe="/syz-executor.5" sig=0 arch=c000003e syscall=202 compat=0 ip=0x7f146706cb19 code=0x7ffc0000 audit: type=1326 audit(1768298407.602:14): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=4114 comm="syz-executor.5" exe="/syz-executor.5" sig=0 arch=c000003e syscall=22 compat=0 ip=0x7f146706cb19 code=0x7ffc0000 audit: type=1326 audit(1768298407.602:15): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=4114 comm="syz-executor.5" exe="/syz-executor.5" sig=0 arch=c000003e syscall=202 compat=0 ip=0x7f146706cb19 code=0x7ffc0000 audit: type=1326 audit(1768298407.603:16): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=4114 comm="syz-executor.5" exe="/syz-executor.5" sig=0 arch=c000003e syscall=202 compat=0 ip=0x7f146706cb19 code=0x7ffc0000 netlink: 12 bytes leftover after parsing attributes in process `syz-executor.0'. audit: type=1326 audit(1768298407.604:17): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=4114 comm="syz-executor.5" exe="/syz-executor.5" sig=0 arch=c000003e syscall=278 compat=0 ip=0x7f146706cb19 code=0x7ffc0000 audit: type=1326 audit(1768298407.604:18): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=4114 comm="syz-executor.5" exe="/syz-executor.5" sig=0 arch=c000003e syscall=202 compat=0 ip=0x7f146706cb19 code=0x7ffc0000 audit: type=1326 audit(1768298407.604:19): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=4114 comm="syz-executor.5" exe="/syz-executor.5" sig=0 arch=c000003e syscall=317 compat=0 ip=0x7f146706cb19 code=0x7ffc0000 audit: type=1326 audit(1768298407.608:20): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=4114 comm="syz-executor.5" exe="/syz-executor.5" sig=0 arch=c000003e syscall=202 compat=0 ip=0x7f146706cb19 code=0x7ffc0000 netlink: 12 bytes leftover after parsing attributes in process `syz-executor.0'. netlink: 12 bytes leftover after parsing attributes in process `syz-executor.0'. mmap: syz-executor.5 (4195) uses deprecated remap_file_pages() syscall. See Documentation/mm/remap_file_pages.rst. netlink: 12 bytes leftover after parsing attributes in process `syz-executor.0'. 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.3'. netlink: 28 bytes leftover after parsing attributes in process `syz-executor.3'. Bluetooth: hci0: Opcode 0x0c1a failed: -4 Bluetooth: hci0: Opcode 0x0406 failed: -4 Bluetooth: hci0: Opcode 0x0406 failed: -4 Bluetooth: hci1: Opcode 0x0c1a failed: -4 Bluetooth: hci1: Opcode 0x0406 failed: -4 Bluetooth: hci1: Opcode 0x0406 failed: -4 Bluetooth: hci2: Opcode 0x0c1a failed: -4 Bluetooth: hci2: Opcode 0x0406 failed: -4 Bluetooth: hci2: Opcode 0x0406 failed: -4 Bluetooth: hci3: Opcode 0x0c1a failed: -4 Bluetooth: hci3: Opcode 0x0406 failed: -4 Bluetooth: hci3: Opcode 0x0406 failed: -4 Bluetooth: hci4: Opcode 0x0c1a failed: -4 Bluetooth: hci4: Opcode 0x0406 failed: -4 Bluetooth: hci4: Opcode 0x0406 failed: -4 Bluetooth: hci5: Opcode 0x0c1a failed: -4 Bluetooth: hci5: Opcode 0x0406 failed: -4 Bluetooth: hci5: Opcode 0x0406 failed: -4 Bluetooth: hci6: Opcode 0x0c1a failed: -4 Bluetooth: hci6: Opcode 0x0406 failed: -4 Bluetooth: hci6: Opcode 0x0406 failed: -4 Bluetooth: hci7: Opcode 0x0c1a failed: -4 Bluetooth: hci7: Opcode 0x0406 failed: -4 Bluetooth: hci7: Opcode 0x0406 failed: -4 netlink: 'syz-executor.4': attribute type 13 has an invalid length. netlink: 'syz-executor.4': attribute type 13 has an invalid length. Bluetooth: hci0: command 0x0c1a tx timeout netlink: 'syz-executor.4': attribute type 13 has an invalid length. netlink: 'syz-executor.4': attribute type 13 has an invalid length. warning: checkpointing journal with EXT4_IOC_CHECKPOINT_FLAG_ZEROOUT can be slow warning: checkpointing journal with EXT4_IOC_CHECKPOINT_FLAG_ZEROOUT can be slow Bluetooth: hci6: command 0x0c1a tx timeout Bluetooth: hci5: command 0x0c1a tx timeout Bluetooth: hci4: command 0x0c1a tx timeout Bluetooth: hci3: command 0x0c1a tx timeout Bluetooth: hci2: command 0x0c1a tx timeout Bluetooth: hci1: command 0x0c1a tx timeout Bluetooth: hci7: command 0x0c1a tx timeout loop2: detected capacity change from 0 to 16383 FAT-fs (loop2): invalid media value (0x26) FAT-fs (loop2): Can't find a valid FAT filesystem warning: checkpointing journal with EXT4_IOC_CHECKPOINT_FLAG_ZEROOUT can be slow netlink: 'syz-executor.4': attribute type 13 has an invalid length. loop2: detected capacity change from 0 to 16383 audit: type=1400 audit(1768298412.974:21): avc: denied { watch_reads } for pid=4577 comm="syz-executor.1" path="/syzkaller-testdir896825594/syzkaller.OXe6H5/47" dev="sda" ino=15990 scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:object_r:unlabeled_t:s0 tclass=dir permissive=1 audit: type=1400 audit(1768298412.982:22): avc: denied { write } for pid=4573 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 warning: checkpointing journal with EXT4_IOC_CHECKPOINT_FLAG_ZEROOUT can be slow warning: checkpointing journal with EXT4_IOC_CHECKPOINT_FLAG_ZEROOUT can be slow audit: type=1400 audit(1768298413.650:23): avc: denied { module_load } for pid=4616 comm="syz-executor.5" path="/syz-executor.5" dev="sda" ino=15934 scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:object_r:unlabeled_t:s0 tclass=system permissive=1 Invalid ELF header type: 3 != 1 Bluetooth: hci0: command 0x0c1a tx timeout syz-executor.6 (4626) used greatest stack depth: 24240 bytes left Bluetooth: hci3: command 0x0c1a tx timeout Bluetooth: hci4: command 0x0c1a tx timeout Bluetooth: hci2: command 0x0c1a tx timeout Bluetooth: hci1: command 0x0c1a tx timeout Bluetooth: hci5: command 0x0c1a tx timeout Bluetooth: hci6: command 0x0c1a tx timeout Bluetooth: hci7: command 0x0c1a tx timeout