===================================== WARNING: bad unlock balance detected! 6.19.0-rc5-next-20260113 #1 Not tainted ------------------------------------- syz-executor.4/6462 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.4/6462: #0: ffff88800f81c3f8 (sb_writers#3){.+.+}-{0:0}, at: filename_create+0xf7/0x400 #1: ffff888049cba078 (&type->i_mutex_dir_key#3/1){+.+.}-{4:4}, at: filename_create+0x1b1/0x400 #2: ffff88800f820950 (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: 6462 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: 0033:0x7fd5a5dc7427 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:00007ffd61a81728 EFLAGS: 00000202 ORIG_RAX: 0000000000000058 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fd5a5dc7427 RDX: ffffffffffffffbc RSI: 00007fd5a5e2200e RDI: 00007fd5a5e211dd RBP: 0000000000000000 R08: 0000000000000000 R09: 00007ffd61a811a0 R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000001 R13: 0000000000000000 R14: 0000000000000001 R15: 00007ffd61a817f0 ------------[ cut here ]------------ WARNING: kernel/rcu/tree_plugin.h:443 at __rcu_read_unlock+0x25f/0x5c0, CPU#0: syz-executor.4/6462 Modules linked in: CPU: 0 UID: 0 PID: 6462 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:ffff8880191279a0 EFLAGS: 00010286 RAX: 00000000ffffffff RBX: ffff88800f4bb700 RCX: ffffffff815664c7 RDX: 0000000000000000 RSI: ffffffff815664d0 RDI: ffff88800f4bbafc RBP: ffff88800f4bb700 R08: 0000000000000000 R09: fffffbfff0ba6ff4 R10: 0000000000000000 R11: 0000000000000001 R12: ffff88800f4bb700 R13: 0000000000000001 R14: ffffffff85c0f4a0 R15: ffff888049d42938 FS: 000055557c430400(0000) GS:ffff8880e5342000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b2ce23000 CR3: 0000000046bf0000 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: 0033:0x7fd5a5dc7427 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:00007ffd61a81728 EFLAGS: 00000202 ORIG_RAX: 0000000000000058 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fd5a5dc7427 RDX: ffffffffffffffbc RSI: 00007fd5a5e2200e RDI: 00007fd5a5e211dd RBP: 0000000000000000 R08: 0000000000000000 R09: 00007ffd61a811a0 R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000001 R13: 0000000000000000 R14: 0000000000000001 R15: 00007ffd61a817f0 irq event stamp: 727 hardirqs last enabled at (727): [] _raw_spin_unlock_irqrestore+0x2c/0x50 hardirqs last disabled at (726): [] _raw_spin_lock_irqsave+0x53/0x60 softirqs last enabled at (722): [] kernel_fpu_end+0x59/0x70 softirqs last disabled at (720): [] kernel_fpu_begin_mask+0x1bb/0x300 ---[ end trace 0000000000000000 ]--- Bluetooth: hci6: Opcode 0x0c03 failed: -110 loop5: detected capacity change from 0 to 8 loop5: detected capacity change from 0 to 8 Bluetooth: hci7: Opcode 0x0c03 failed: -110 Bluetooth: hci4: unexpected event 0x3e length: 431 > 260 Bluetooth: hci4: unexpected subevent 0x19 length: 430 > 28 Bluetooth: hci4: Unable to find connection with handle 0x0000 Bluetooth: hci4: unexpected event 0x3e length: 431 > 260 Bluetooth: hci4: unexpected subevent 0x19 length: 430 > 28 Bluetooth: hci4: Unable to find connection with handle 0x0000 syz-executor.6 (6555) used greatest stack depth: 24000 bytes left audit: type=1400 audit(1768296325.598:14): avc: denied { watch_reads } for pid=6647 comm="syz-executor.6" path="/syzkaller-testdir520762197/syzkaller.OWO2t9/39/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 program syz-executor.7 is using a deprecated SCSI ioctl, please convert it to SG_IO netlink: 8 bytes leftover after parsing attributes in process `syz-executor.7'. netlink: 8 bytes leftover after parsing attributes in process `syz-executor.7'. netlink: 20 bytes leftover after parsing attributes in process `syz-executor.1'. ieee80211 phy26: Selected rate control algorithm 'minstrel_ht' netlink: 20 bytes leftover after parsing attributes in process `syz-executor.1'. ieee80211 phy27: Selected rate control algorithm 'minstrel_ht' netlink: 20 bytes leftover after parsing attributes in process `syz-executor.1'. ieee80211 phy28: Selected rate control algorithm 'minstrel_ht' netlink: 12 bytes leftover after parsing attributes in process `syz-executor.3'. netlink: 12 bytes leftover after parsing attributes in process `syz-executor.3'. netlink: 20 bytes leftover after parsing attributes in process `syz-executor.1'. ieee80211 phy29: Selected rate control algorithm 'minstrel_ht' netlink: 12 bytes leftover after parsing attributes in process `syz-executor.3'. loop4: detected capacity change from 0 to 264192 netlink: 12 bytes leftover after parsing attributes in process `syz-executor.3'. ISOFS: Logical zone size(0) < hardware blocksize(1024) loop4: detected capacity change from 0 to 264192 ISOFS: Logical zone size(0) < hardware blocksize(1024) netlink: 20 bytes leftover after parsing attributes in process `syz-executor.1'. ieee80211 phy30: Selected rate control algorithm 'minstrel_ht' netlink: 12 bytes leftover after parsing attributes in process `syz-executor.3'. audit: type=1400 audit(1768296330.576:15): avc: denied { write } for pid=6976 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 (system_u) failed with errno=-22 SELinux: security_context_str_to_sid (system_u) failed with errno=-22 SELinux: security_context_str_to_sid (system_u) failed with errno=-22 SELinux: security_context_str_to_sid (system_u) failed with errno=-22 ======================================================= 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. ======================================================= SELinux: security_context_str_to_sid (system_u) failed with errno=-22 netlink: 'syz-executor.2': attribute type 9 has an invalid length. netlink: 8 bytes leftover after parsing attributes in process `syz-executor.2'. netlink: 'syz-executor.2': attribute type 9 has an invalid length. netlink: 8 bytes leftover after parsing attributes in process `syz-executor.2'. loop3: detected capacity change from 0 to 264192 capability: warning: `syz-executor.5' uses deprecated v2 capabilities in a way that may be insecure audit: type=1400 audit(1768296332.600:16): avc: denied { tracepoint } for pid=7126 comm="syz-executor.5" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=perf_event permissive=1 audit: type=1400 audit(1768296332.683:17): avc: denied { relabelto } for pid=7144 comm="syz-executor.2" name="cgroup.procs" dev="cgroup2" ino=2018 scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:object_r:clock_device_t:s0 tclass=file permissive=1 audit: type=1400 audit(1768296332.683:18): avc: denied { associate } for pid=7144 comm="syz-executor.2" name="cgroup.procs" dev="cgroup2" ino=2018 scontext=system_u:object_r:clock_device_t:s0 tcontext=system_u:object_r:cgroup_t:s0 tclass=filesystem permissive=1 audit: type=1400 audit(1768296332.691:19): avc: denied { relabelfrom } for pid=7144 comm="syz-executor.2" name="cgroup.procs" dev="cgroup2" ino=2018 scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:object_r:clock_device_t:s0 tclass=file permissive=1 loop3: detected capacity change from 0 to 264192 loop1: detected capacity change from 0 to 264192 loop6: detected capacity change from 0 to 264192 9p: Unknown Cache mode or invalid value n netlink: 'syz-executor.2': attribute type 13 has an invalid length. 9p: Unknown Cache mode or invalid value n netlink: 'syz-executor.2': attribute type 13 has an invalid length. 9p: Unknown Cache mode or invalid value n 9p: Unknown Cache mode or invalid value n