===================================== WARNING: bad unlock balance detected! 6.19.0-rc5-next-20260113 #1 Not tainted ------------------------------------- syz-executor.7/289 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.7/289: #0: ffff88800fb183f8 (sb_writers#3){.+.+}-{0:0}, at: filename_create+0xf7/0x400 #1: ffff88801b5a96f0 (&type->i_mutex_dir_key#3/1){+.+.}-{4:4}, at: filename_create+0x1b1/0x400 #2: ffff88800fb1c950 (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: 289 Comm: syz-executor.7 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: 0033:0x7fb1a88acc27 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:00007ffcb4831538 EFLAGS: 00000202 ORIG_RAX: 0000000000000053 RAX: ffffffffffffffda RBX: 00007ffcb48315c0 RCX: 00007fb1a88acc27 RDX: 0000000000000000 RSI: 00000000000001ff RDI: 00007ffcb48315c0 RBP: 00007ffcb483159c R08: 0000000000000000 R09: 0000000000000003 R10: 00007ffcb48312d7 R11: 0000000000000202 R12: 0000000000000032 R13: 000000000001fd3d R14: 0000000000000003 R15: 00007ffcb4831600 ------------[ cut here ]------------ WARNING: kernel/rcu/tree_plugin.h:443 at __rcu_read_unlock+0x25f/0x5c0, CPU#0: syz-executor.7/289 Modules linked in: CPU: 0 UID: 0 PID: 289 Comm: syz-executor.7 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:ffff8880167af9e0 EFLAGS: 00010286 RAX: 00000000ffffffff RBX: ffff88801af6d280 RCX: ffffffff815664c7 RDX: 0000000000000000 RSI: ffffffff815664d0 RDI: ffff88801af6d67c RBP: ffff88801af6d280 R08: 0000000000000000 R09: fffffbfff0ba6ff4 R10: 0000000000000000 R11: 0000000000000001 R12: ffff88801af6d280 R13: 0000000000000001 R14: ffffffff85c10080 R15: ffff88804a4ab2c0 FS: 000055558af75400(0000) GS:ffff8880e5342000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000555557980c58 CR3: 000000001b1bc000 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: 0033:0x7fb1a88acc27 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:00007ffcb4831538 EFLAGS: 00000202 ORIG_RAX: 0000000000000053 RAX: ffffffffffffffda RBX: 00007ffcb48315c0 RCX: 00007fb1a88acc27 RDX: 0000000000000000 RSI: 00000000000001ff RDI: 00007ffcb48315c0 RBP: 00007ffcb483159c R08: 0000000000000000 R09: 0000000000000003 R10: 00007ffcb48312d7 R11: 0000000000000202 R12: 0000000000000032 R13: 000000000001fd3d R14: 0000000000000003 R15: 00007ffcb4831600 irq event stamp: 167939 hardirqs last enabled at (167939): [] irqentry_exit+0x17b/0x650 hardirqs last disabled at (167938): [] sysvec_apic_timer_interrupt+0xf/0x80 softirqs last enabled at (167932): [] kernel_fpu_end+0x59/0x70 softirqs last disabled at (167930): [] kernel_fpu_begin_mask+0x1bb/0x300 ---[ end trace 0000000000000000 ]--- netlink: 12 bytes leftover after parsing attributes in process `syz-executor.3'. audit: type=1400 audit(1768297001.142:10): avc: denied { write } for pid=3946 comm="syz-executor.2" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=perf_event permissive=1 SELinux: security_context_str_to_sid (sysadm_u) failed with errno=-22 SELinux: security_context_str_to_sid (sysadm_u) failed with errno=-22 Bluetooth: hci0: command 0x0c1a tx timeout SELinux: security_context_str_to_sid (sysadm_u) failed with errno=-22 audit: type=1400 audit(1768297001.688:11): avc: denied { watch_reads } for pid=4006 comm="syz-executor.4" path="/syzkaller-testdir812494100/syzkaller.qQRV2e/9/file0" dev="tmpfs" ino=1 scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:object_r:tmpfs_t:s0 tclass=dir permissive=1 audit: type=1400 audit(1768297001.791:12): avc: denied { block_suspend } for pid=4017 comm="syz-executor.0" capability=36 scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=capability2 permissive=1 ======================================================= 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. ======================================================= tmpfs: Unknown parameter './file0' syz-executor.0 uses obsolete (PF_INET,SOCK_PACKET) audit: type=1400 audit(1768297002.038:13): avc: denied { tracepoint } for pid=4038 comm="syz-executor.2" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=perf_event permissive=1 SELinux: unrecognized netlink message: protocol=4 nlmsg_type=1012 sclass=netlink_tcpdiag_socket pid=4073 comm=syz-executor.5 Bluetooth: hci2: command 0x0c1a tx timeout Bluetooth: hci1: command 0x0c1a tx timeout Bluetooth: hci7: command 0x0c1a tx timeout Bluetooth: hci6: command 0x0c1a tx timeout Bluetooth: hci5: command 0x0c1a tx timeout Bluetooth: hci4: command 0x0c1a tx timeout Bluetooth: hci3: command 0x0c1a tx timeout netlink: 'syz-executor.6': attribute type 30 has an invalid length. netlink: 'syz-executor.6': attribute type 30 has an invalid length. 9pnet_fd: Insufficient options for proto=fd 9pnet_fd: Insufficient options for proto=fd syz-executor.0 (4178) used greatest stack depth: 23984 bytes left Bluetooth: hci0: command 0x0c1a tx timeout FAT-fs (loop3): unable to read boot sector 9pnet_fd: Insufficient options for proto=fd Bluetooth: hci1: command 0x0c1a tx timeout Bluetooth: hci2: command 0x0c1a tx timeout Bluetooth: hci4: command 0x0c1a tx timeout Bluetooth: hci5: command 0x0c1a tx timeout Bluetooth: hci3: command 0x0c1a tx timeout Bluetooth: hci6: command 0x0c1a tx timeout Bluetooth: hci7: command 0x0c1a tx timeout FAT-fs (loop3): unable to read boot sector 9pnet_fd: Insufficient options for proto=fd FAT-fs (loop3): unable to read boot sector 9pnet_fd: Insufficient options for proto=fd FAT-fs (loop3): unable to read boot sector Bluetooth: hci0: command 0x0c1a tx timeout /dev/sr0: Can't open blockdev /dev/sr0: Can't open blockdev Bluetooth: hci1: command 0x0c1a tx timeout Bluetooth: hci2: command 0x0c1a tx timeout Bluetooth: hci5: command 0x0c1a tx timeout Bluetooth: hci6: command 0x0c1a tx timeout Bluetooth: hci7: command 0x0c1a tx timeout Bluetooth: hci3: command 0x0c1a tx timeout Bluetooth: hci4: command 0x0c1a tx timeout SELinux: Context system_u:object_r:hald_var_lib_t:s0 is not valid (left unmapped). audit: type=1400 audit(1768297007.169:14): avc: denied { associate } for pid=4316 comm="syz-executor.5" name="loop-control" dev="devtmpfs" ino=101 scontext=system_u:object_r:unlabeled_t:s0 tcontext=system_u:object_r:device_t:s0 tclass=filesystem permissive=1 srawcon="system_u:object_r:hald_var_lib_t:s0" SELinux: Context system_u:object_r:hald_cache_t:s0 is not valid (left unmapped). UDPLite6: UDP-Lite is deprecated and scheduled to be removed in 2025, please contact the netdev mailing list Bluetooth: hci4: command 0x0c1a tx timeout loop0: detected capacity change from 0 to 264192 syz_tun: entered allmulticast mode syz_tun: entered promiscuous mode syz_tun: left promiscuous mode syz_tun: left allmulticast mode Bluetooth: hci4: command 0x0c1a tx timeout