===================================== WARNING: bad unlock balance detected! 6.19.0-rc5-next-20260114 #1 Not tainted ------------------------------------- syz-executor.6/6355 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.6/6355: #0: ffff88800fb843f8 (sb_writers#3){.+.+}-{0:0}, at: filename_create+0xf7/0x400 #1: ffff88801f642078 (&type->i_mutex_dir_key#3/1){+.+.}-{4:4}, at: filename_create+0x1b1/0x400 #2: ffff88800fb08950 (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: 6355 Comm: syz-executor.6 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: 0033:0x7f511cc58427 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:00007ffc64920538 EFLAGS: 00000202 ORIG_RAX: 0000000000000058 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f511cc58427 RDX: 00007ffc64920613 RSI: 00007f511ccb302f RDI: 00007ffc64920600 RBP: 0000000000000000 R08: 0000000000000000 R09: 00007ffc649203d0 R10: 00007ffc64920287 R11: 0000000000000202 R12: 0000000000000001 R13: 0000000000000000 R14: 0000000000000001 R15: 00007ffc64920600 ------------[ cut here ]------------ WARNING: kernel/rcu/tree_plugin.h:443 at __rcu_read_unlock+0x25f/0x5c0, CPU#1: syz-executor.6/6355 Modules linked in: CPU: 1 UID: 0 PID: 6355 Comm: syz-executor.6 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:ffff888015cdf9a0 EFLAGS: 00010286 RAX: 00000000ffffffff RBX: ffff88801d101b80 RCX: ffffffff81565a27 RDX: 0000000000000000 RSI: ffffffff81565a30 RDI: ffff88801d101f7c RBP: ffff88801d101b80 R08: 0000000000000000 R09: fffffbfff0ba6ffc R10: 0000000000000000 R11: 0000000000000001 R12: ffff88801d101b80 R13: 0000000000000001 R14: ffffffff85c0dba0 R15: ffff88801f642938 FS: 0000555588a38400(0000) GS:ffff8880e5443000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f511ccd8546 CR3: 00000000508c5000 CR4: 0000000000350ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600 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: 0033:0x7f511cc58427 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:00007ffc64920538 EFLAGS: 00000202 ORIG_RAX: 0000000000000058 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f511cc58427 RDX: 00007ffc64920613 RSI: 00007f511ccb302f RDI: 00007ffc64920600 RBP: 0000000000000000 R08: 0000000000000000 R09: 00007ffc649203d0 R10: 00007ffc64920287 R11: 0000000000000202 R12: 0000000000000001 R13: 0000000000000000 R14: 0000000000000001 R15: 00007ffc64920600 irq event stamp: 583 hardirqs last enabled at (583): [] irqentry_exit+0x17b/0x650 hardirqs last disabled at (582): [] sysvec_apic_timer_interrupt+0xf/0x80 softirqs last enabled at (576): [] kernel_fpu_end+0x59/0x70 softirqs last disabled at (574): [] kernel_fpu_begin_mask+0x1bb/0x300 ---[ end trace 0000000000000000 ]--- netlink: 4 bytes leftover after parsing attributes in process `syz-executor.3'. loop6: detected capacity change from 0 to 2048 EXT4-fs (loop6): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: none. netlink: 4 bytes leftover after parsing attributes in process `syz-executor.3'. EXT4-fs (loop6): unmounting filesystem 00000000-0000-0000-0000-000000000000. loop6: detected capacity change from 0 to 2048 EXT4-fs (loop6): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: none. EXT4-fs (loop6): unmounting filesystem 00000000-0000-0000-0000-000000000000. program syz-executor.2 is using a deprecated SCSI ioctl, please convert it to SG_IO netlink: 4 bytes leftover after parsing attributes in process `syz-executor.3'. Bluetooth: hci0: ACL packet for unknown connection handle 2745 Bluetooth: hci0: ISO packet for unknown connection handle 1106 Bluetooth: hci0: ACL packet for unknown connection handle 2745 Bluetooth: hci0: ISO packet for unknown connection handle 1106 Bluetooth: hci0: ACL packet for unknown connection handle 2745 program syz-executor.2 is using a deprecated SCSI ioctl, please convert it to SG_IO Bluetooth: hci0: ISO packet for unknown connection handle 1106 Bluetooth: hci2: ACL packet for unknown connection handle 2745 Bluetooth: hci2: ISO packet for unknown connection handle 1106 program syz-executor.2 is using a deprecated SCSI ioctl, please convert it to SG_IO netlink: 4 bytes leftover after parsing attributes in process `syz-executor.3'. Bluetooth: hci2: ACL packet for unknown connection handle 2745 Bluetooth: hci2: unexpected event for opcode 0x0400 Bluetooth: hci2: ISO packet for unknown connection handle 1106 Bluetooth: hci5: ACL packet for unknown connection handle 2745 Bluetooth: hci5: ISO packet for unknown connection handle 1106 Bluetooth: hci0: ACL packet for unknown connection handle 2745 program syz-executor.2 is using a deprecated SCSI ioctl, please convert it to SG_IO Bluetooth: hci0: ISO packet for unknown connection handle 1106 Bluetooth: hci5: ACL packet for unknown connection handle 2745 Bluetooth: hci5: ISO packet for unknown connection handle 1106 Bluetooth: hci2: ACL packet for unknown connection handle 2745 Bluetooth: hci2: unexpected event for opcode 0x0400 netlink: 4 bytes leftover after parsing attributes in process `syz-executor.3'. Bluetooth: hci2: ISO packet for unknown connection handle 1106 Bluetooth: hci5: ACL packet for unknown connection handle 2745 Bluetooth: hci5: ISO packet for unknown connection handle 1106 Bluetooth: hci0: ACL packet for unknown connection handle 2745 Bluetooth: hci0: ISO packet for unknown connection handle 1106 loop1: detected capacity change from 0 to 5168 UDPLite: UDP-Lite is deprecated and scheduled to be removed in 2025, please contact the netdev mailing list loop6: detected capacity change from 0 to 192 loop6: detected capacity change from 0 to 192 loop6: detected capacity change from 0 to 192 Bluetooth: hci0: Controller not accepting commands anymore: ncmd = 0 Bluetooth: hci0: Injecting HCI hardware error event Bluetooth: hci0: hardware error 0x00 Bluetooth: hci2: Controller not accepting commands anymore: ncmd = 0 Bluetooth: hci2: Injecting HCI hardware error event Bluetooth: hci2: hardware error 0x00 loop6: detected capacity change from 0 to 192 Bluetooth: hci5: Controller not accepting commands anymore: ncmd = 0 Bluetooth: hci5: Injecting HCI hardware error event Bluetooth: hci5: hardware error 0x00 No source specified No source specified No source specified No source specified No source specified audit: type=1400 audit(2000000033.914:10): avc: denied { block_suspend } for pid=6870 comm="syz-executor.1" capability=36 scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=capability2 permissive=1 loop7: detected capacity change from 0 to 64 FAT-fs (loop7): Invalid FSINFO signature: 0x00000000, 0x00000000 (sector = 1) Bluetooth: hci0: Opcode 0x0c03 failed: -110 Bluetooth: hci2: Opcode 0x0c03 failed: -110 Bluetooth: hci5: Opcode 0x0c03 failed: -110 loop4: detected capacity change from 0 to 64 FAT-fs (loop4): Invalid FSINFO signature: 0x00000000, 0x00000000 (sector = 1) loop5: detected capacity change from 0 to 64 loop6: detected capacity change from 0 to 64 FAT-fs (loop5): Invalid FSINFO signature: 0x00000000, 0x00000000 (sector = 1) FAT-fs (loop6): Invalid FSINFO signature: 0x00000000, 0x00000000 (sector = 1) loop3: detected capacity change from 0 to 64 FAT-fs (loop3): Invalid FSINFO signature: 0x00000000, 0x00000000 (sector = 1) loop1: detected capacity change from 0 to 64 FAT-fs (loop1): Invalid FSINFO signature: 0x00000000, 0x00000000 (sector = 1) loop2: detected capacity change from 0 to 64 FAT-fs (loop2): Invalid FSINFO signature: 0x00000000, 0x00000000 (sector = 1)