===================================== WARNING: bad unlock balance detected! 6.19.0-rc5-next-20260114 #1 Not tainted ------------------------------------- syz-executor.5/4923 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.5/4923: #0: ffff88800f5723f8 (sb_writers#3){.+.+}-{0:0}, at: filename_create+0xf7/0x400 #1: ffff88804cd483e0 (&type->i_mutex_dir_key#3/1){+.+.}-{4:4}, at: filename_create+0x1b1/0x400 #2: ffff88800f576950 (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: 4923 Comm: syz-executor.5 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: 0033:0x7f6508fdc427 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:00007ffcb8889888 EFLAGS: 00000202 ORIG_RAX: 0000000000000058 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f6508fdc427 RDX: ffffffffffffffbc RSI: 00007f650903700e RDI: 00007f65090361dd RBP: 0000000000000000 R08: 0000000000000000 R09: 00007ffcb8889300 R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000001 R13: 0000000000000000 R14: 0000000000000001 R15: 00007ffcb8889950 ------------[ cut here ]------------ WARNING: kernel/rcu/tree_plugin.h:443 at __rcu_read_unlock+0x25f/0x5c0, CPU#1: syz-executor.5/4923 Modules linked in: CPU: 1 UID: 0 PID: 4923 Comm: syz-executor.5 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:ffff888048f0f9a0 EFLAGS: 00010286 RAX: 00000000ffffffff RBX: ffff888046f90000 RCX: ffffffff81565a27 RDX: 0000000000000000 RSI: ffffffff81565a30 RDI: ffff888046f903fc RBP: ffff888046f90000 R08: 0000000000000000 R09: fffffbfff0ba6ffc R10: 0000000000000000 R11: 0000000000000001 R12: ffff888046f90000 R13: 0000000000000001 R14: ffffffff85c11070 R15: ffff88801b788318 FS: 0000555563e4d400(0000) GS:ffff8880e5443000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ffcb8888d28 CR3: 00000000502c8000 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: 0033:0x7f6508fdc427 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:00007ffcb8889888 EFLAGS: 00000202 ORIG_RAX: 0000000000000058 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f6508fdc427 RDX: ffffffffffffffbc RSI: 00007f650903700e RDI: 00007f65090361dd RBP: 0000000000000000 R08: 0000000000000000 R09: 00007ffcb8889300 R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000001 R13: 0000000000000000 R14: 0000000000000001 R15: 00007ffcb8889950 irq event stamp: 621 hardirqs last enabled at (621): [] _raw_spin_unlock_irqrestore+0x2c/0x50 hardirqs last disabled at (620): [] _raw_spin_lock_irqsave+0x53/0x60 softirqs last enabled at (616): [] kernel_fpu_end+0x59/0x70 softirqs last disabled at (614): [] kernel_fpu_begin_mask+0x1bb/0x300 ---[ end trace 0000000000000000 ]--- loop1: detected capacity change from 0 to 224106 loop1: detected capacity change from 0 to 224106 loop1: detected capacity change from 0 to 224106 UDC core: USB Raw Gadget: couldn't find an available UDC or it's busy misc raw-gadget: fail, usb_gadget_register_driver returned -16 UDC core: USB Raw Gadget: couldn't find an available UDC or it's busy misc raw-gadget: fail, usb_gadget_register_driver returned -16 syz_tun: entered promiscuous mode audit: type=1326 audit(1768380721.930:19): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=5184 comm="syz-executor.5" exe="/syz-executor.5" sig=0 arch=c000003e syscall=202 compat=0 ip=0x7f6508fdcb19 code=0x7ffc0000 audit: type=1326 audit(1768380721.933:20): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=5184 comm="syz-executor.5" exe="/syz-executor.5" sig=0 arch=c000003e syscall=329 compat=0 ip=0x7f6508fdcb19 code=0x7ffc0000 audit: type=1326 audit(1768380721.937:21): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=5184 comm="syz-executor.5" exe="/syz-executor.5" sig=0 arch=c000003e syscall=202 compat=0 ip=0x7f6508fdcb19 code=0x7ffc0000 audit: type=1326 audit(1768380721.942:22): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=5184 comm="syz-executor.5" exe="/syz-executor.5" sig=0 arch=c000003e syscall=202 compat=0 ip=0x7f6508fdcb19 code=0x7ffc0000 audit: type=1326 audit(1768380721.969:23): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=5184 comm="syz-executor.5" exe="/syz-executor.5" sig=0 arch=c000003e syscall=298 compat=0 ip=0x7f6508fdcb19 code=0x7ffc0000 syz_tun: left promiscuous mode audit: type=1326 audit(1768380721.991:24): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=5184 comm="syz-executor.5" exe="/syz-executor.5" sig=0 arch=c000003e syscall=202 compat=0 ip=0x7f6508fdcb19 code=0x7ffc0000 audit: type=1326 audit(1768380721.992:25): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=5184 comm="syz-executor.5" exe="/syz-executor.5" sig=0 arch=c000003e syscall=317 compat=0 ip=0x7f6508fdcb19 code=0x7ffc0000 syz_tun: entered promiscuous mode audit: type=1326 audit(1768380722.002:26): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=5184 comm="syz-executor.5" exe="/syz-executor.5" sig=0 arch=c000003e syscall=202 compat=0 ip=0x7f6508fdcb19 code=0x7ffc0000 audit: type=1326 audit(1768380722.008:27): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=5184 comm="syz-executor.5" exe="/syz-executor.5" sig=0 arch=c000003e syscall=202 compat=0 ip=0x7f6508fdcb19 code=0x7ffc0000 syz_tun: left promiscuous mode audit: type=1326 audit(1768380722.569:28): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=5194 comm="syz-executor.5" exe="/syz-executor.5" sig=0 arch=c000003e syscall=202 compat=0 ip=0x7f6508fdcb19 code=0x7ffc0000 syz_tun: entered promiscuous mode Bluetooth: hci2: Controller not accepting commands anymore: ncmd = 0 Bluetooth: hci2: Injecting HCI hardware error event Bluetooth: hci2: hardware error 0x00 syz_tun: left promiscuous mode syz_tun: entered promiscuous mode syz_tun: entered promiscuous mode syz_tun: left promiscuous mode syz_tun: entered promiscuous mode syz_tun: left promiscuous mode syz_tun: left promiscuous mode syz_tun: entered promiscuous mode syz_tun: left promiscuous mode syz_tun: entered promiscuous mode syz_tun: left promiscuous mode syz_tun: entered promiscuous mode syz_tun: left promiscuous mode syz_tun: entered promiscuous mode syz_tun: entered promiscuous mode syz_tun: entered promiscuous mode syz_tun: left promiscuous mode syz_tun: left promiscuous mode syz_tun: entered promiscuous mode syz_tun: entered promiscuous mode syz_tun: left promiscuous mode syz_tun: entered promiscuous mode syz_tun: left promiscuous mode syz_tun: left promiscuous mode syz_tun: entered promiscuous mode syz_tun: left promiscuous mode syz_tun: left promiscuous mode syz_tun: entered promiscuous mode syz_tun: entered promiscuous mode syz_tun: left promiscuous mode syz_tun: left promiscuous mode syz_tun: entered promiscuous mode syz_tun: left promiscuous mode syz_tun: entered promiscuous mode syz_tun: left promiscuous mode perf: interrupt took too long (4014 > 3996), lowering kernel.perf_event_max_sample_rate to 49000 perf: interrupt took too long (5047 > 5017), lowering kernel.perf_event_max_sample_rate to 39000 Bluetooth: hci2: Opcode 0x0c03 failed: -110 perf: interrupt took too long (6347 > 6308), lowering kernel.perf_event_max_sample_rate to 31000 perf: interrupt took too long (7979 > 7933), lowering kernel.perf_event_max_sample_rate to 25000 perf: interrupt took too long (9976 > 9973), lowering kernel.perf_event_max_sample_rate to 20000 perf: interrupt took too long (12475 > 12470), lowering kernel.perf_event_max_sample_rate to 16000