===================================== WARNING: bad unlock balance detected! 6.19.0-rc5-next-20260113 #1 Not tainted ------------------------------------- syz-executor.6/4024 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.6/4024: #0: ffff88800f8c43f8 (sb_writers#3){.+.+}-{0:0}, at: filename_create+0xf7/0x400 #1: ffff8880351d2a00 (&type->i_mutex_dir_key#3/1){+.+.}-{4:4}, at: filename_create+0x1b1/0x400 #2: ffff88800a228950 (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: 4024 Comm: syz-executor.6 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: 0033:0x7f9044502427 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:00007fffcfe000a8 EFLAGS: 00000206 ORIG_RAX: 0000000000000058 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f9044502427 RDX: ffffffffffffffbc RSI: 00007f904455d00e RDI: 00007f904455c1dd RBP: 0000000000000000 R08: 0000000000000000 R09: 00007fffcfdffb20 R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000001 R13: 0000000000000000 R14: 0000000000000001 R15: 00007fffcfe00170 ------------[ cut here ]------------ WARNING: kernel/rcu/tree_plugin.h:443 at __rcu_read_unlock+0x25f/0x5c0, CPU#1: syz-executor.6/4024 Modules linked in: CPU: 1 UID: 0 PID: 4024 Comm: syz-executor.6 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:ffff88801dac79a0 EFLAGS: 00010286 RAX: 00000000ffffffff RBX: ffff888019ff5280 RCX: ffffffff815664c7 RDX: 0000000000000000 RSI: ffffffff815664d0 RDI: ffff888019ff567c RBP: ffff888019ff5280 R08: 0000000000000000 R09: fffffbfff0ba6ff4 R10: 0000000000000000 R11: 0000000000000001 R12: ffff888019ff5280 R13: 0000000000000001 R14: ffffffff85c0c980 R15: ffff8880351b1628 FS: 0000555569840400(0000) GS:ffff8880e5442000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b2d334000 CR3: 000000004aba4000 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: 0033:0x7f9044502427 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:00007fffcfe000a8 EFLAGS: 00000206 ORIG_RAX: 0000000000000058 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f9044502427 RDX: ffffffffffffffbc RSI: 00007f904455d00e RDI: 00007f904455c1dd RBP: 0000000000000000 R08: 0000000000000000 R09: 00007fffcfdffb20 R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000001 R13: 0000000000000000 R14: 0000000000000001 R15: 00007fffcfe00170 irq event stamp: 1607 hardirqs last enabled at (1607): [] _raw_spin_unlock_irqrestore+0x2c/0x50 hardirqs last disabled at (1606): [] _raw_spin_lock_irqsave+0x53/0x60 softirqs last enabled at (1602): [] kernel_fpu_end+0x59/0x70 softirqs last disabled at (1600): [] kernel_fpu_begin_mask+0x1bb/0x300 ---[ end trace 0000000000000000 ]--- Bluetooth: hci5: connection err: -111 Bluetooth: hci2: connection err: -111 Bluetooth: hci3: connection err: -111 Bluetooth: hci5: connection err: -111 Bluetooth: hci3: connection err: -111 Bluetooth: hci6: Opcode 0x0c03 failed: -110 Bluetooth: hci6: hardware error 0x08 syz-executor.2 uses obsolete (PF_INET,SOCK_PACKET) Bluetooth: hci5: Opcode 0x0c03 failed: -110 Bluetooth: hci5: hardware error 0x08 Bluetooth: hci3: Opcode 0x0c03 failed: -110 Bluetooth: hci3: hardware error 0x08 Bluetooth: hci1: Opcode 0x0c03 failed: -110 Bluetooth: hci4: Opcode 0x0c03 failed: -110 Bluetooth: hci4: hardware error 0x08 Bluetooth: hci1: hardware error 0x08 Bluetooth: hci0: Opcode 0x0c03 failed: -110 Bluetooth: hci0: hardware error 0x08 FAT-fs (loop0): Invalid FSINFO signature: 0x00000000, 0x00000000 (sector = 1) Bluetooth: hci7: Opcode 0x0c03 failed: -110 Bluetooth: hci7: hardware error 0x08 FAT-fs (loop0): Invalid FSINFO signature: 0x00000000, 0x00000000 (sector = 1) Bluetooth: hci2: Opcode 0x0c03 failed: -110 Bluetooth: hci2: hardware error 0x08 FAT-fs (loop0): Invalid FSINFO signature: 0x00000000, 0x00000000 (sector = 1) netlink: 4384 bytes leftover after parsing attributes in process `syz-executor.6'. FAT-fs (loop0): Invalid FSINFO signature: 0x00000000, 0x00000000 (sector = 1) netlink: 4384 bytes leftover after parsing attributes in process `syz-executor.6'. Bluetooth: hci6: Opcode 0x0c03 failed: -110 netlink: 4384 bytes leftover after parsing attributes in process `syz-executor.6'. netlink: 4384 bytes leftover after parsing attributes in process `syz-executor.6'. Bluetooth: hci5: Opcode 0x0c03 failed: -110 Bluetooth: hci3: Opcode 0x0c03 failed: -110 Bluetooth: hci1: Opcode 0x0c03 failed: -110 Bluetooth: hci4: Opcode 0x0c03 failed: -110 Bluetooth: hci0: Opcode 0x0c03 failed: -110 syz-executor.3 (4222) used greatest stack depth: 22960 bytes left Bluetooth: hci7: Opcode 0x0c03 failed: -110 Bluetooth: hci2: Opcode 0x0c03 failed: -110 set_capacity_and_notify: 33 callbacks suppressed loop2: detected capacity change from 0 to 512 audit: type=1400 audit(1768292748.039:10): avc: denied { watch_reads } for pid=4333 comm="syz-executor.1" path="/syzkaller-testdir231840896/syzkaller.m1YBx9/29/file0" dev="sda" ino=16016 scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:object_r:unlabeled_t:s0 tclass=dir permissive=1 EXT4-fs (loop2): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: none. ext4 filesystem being mounted at /syzkaller-testdir796726395/syzkaller.Dqg9yO/26/file0 supports timestamps until 2038-01-19 (0x7fffffff) EXT4-fs (loop2): unmounting filesystem 00000000-0000-0000-0000-000000000000. loop2: detected capacity change from 0 to 512 EXT4-fs (loop2): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: none. ext4 filesystem being mounted at /syzkaller-testdir796726395/syzkaller.Dqg9yO/26/file0 supports timestamps until 2038-01-19 (0x7fffffff) EXT4-fs (loop2): unmounting filesystem 00000000-0000-0000-0000-000000000000. loop4: detected capacity change from 0 to 512 loop2: detected capacity change from 0 to 512 EXT4-fs (loop4): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: none. EXT4-fs (loop2): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: none. ext4 filesystem being mounted at /syzkaller-testdir796726395/syzkaller.Dqg9yO/27/file0 supports timestamps until 2038-01-19 (0x7fffffff) ext4 filesystem being mounted at /syzkaller-testdir696270770/syzkaller.OmIOnh/25/file0 supports timestamps until 2038-01-19 (0x7fffffff) EXT4-fs (loop2): unmounting filesystem 00000000-0000-0000-0000-000000000000. EXT4-fs (loop4): unmounting filesystem 00000000-0000-0000-0000-000000000000. loop4: detected capacity change from 0 to 512 EXT4-fs (loop4): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: none. loop2: detected capacity change from 0 to 512 ext4 filesystem being mounted at /syzkaller-testdir696270770/syzkaller.OmIOnh/26/file0 supports timestamps until 2038-01-19 (0x7fffffff) EXT4-fs (loop4): unmounting filesystem 00000000-0000-0000-0000-000000000000. EXT4-fs (loop2): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: none. ext4 filesystem being mounted at /syzkaller-testdir796726395/syzkaller.Dqg9yO/28/file0 supports timestamps until 2038-01-19 (0x7fffffff) EXT4-fs (loop2): unmounting filesystem 00000000-0000-0000-0000-000000000000. tmpfs: Unknown parameter './file0/file0' loop4: detected capacity change from 0 to 512 EXT4-fs (loop4): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: none. ext4 filesystem being mounted at /syzkaller-testdir696270770/syzkaller.OmIOnh/27/file0 supports timestamps until 2038-01-19 (0x7fffffff) loop2: detected capacity change from 0 to 512 EXT4-fs (loop4): unmounting filesystem 00000000-0000-0000-0000-000000000000. EXT4-fs (loop2): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: none. ext4 filesystem being mounted at /syzkaller-testdir796726395/syzkaller.Dqg9yO/29/file0 supports timestamps until 2038-01-19 (0x7fffffff) EXT4-fs (loop2): unmounting filesystem 00000000-0000-0000-0000-000000000000. UDPLite: UDP-Lite is deprecated and scheduled to be removed in 2025, please contact the netdev mailing list