===================================== WARNING: bad unlock balance detected! 6.19.0-rc5-next-20260116 #1 Not tainted ------------------------------------- syz-executor.0/275 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.0/275: #0: ffff88800f8443f8 (sb_writers#3){.+.+}-{0:0}, at: filename_create+0xf7/0x400 #1: ffff8880193ad9a8 (&type->i_mutex_dir_key#3/1){+.+.}-{4:4}, at: filename_create+0x1b1/0x400 #2: ffff88800f858950 (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: 275 Comm: syz-executor.0 Not tainted 6.19.0-rc5-next-20260116 #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 filename_mkdirat+0x118/0x430 __x64_sys_mkdir+0x6e/0xd0 do_syscall_64+0xbf/0x420 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f47e1358c27 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:00007fff4374cbc8 EFLAGS: 00000202 ORIG_RAX: 0000000000000053 RAX: ffffffffffffffda RBX: 00007fff4374cc50 RCX: 00007f47e1358c27 RDX: 0000000000000000 RSI: 00000000000001ff RDI: 00007fff4374cc50 RBP: 00007fff4374cc2c R08: 0000000000000000 R09: 0000000000000003 R10: 00007fff4374c967 R11: 0000000000000202 R12: 0000000000000032 R13: 00000000000272f5 R14: 0000000000000006 R15: 00007fff4374cc90 ------------[ cut here ]------------ WARNING: kernel/rcu/tree_plugin.h:443 at __rcu_read_unlock+0x25f/0x5c0, CPU#0: syz-executor.0/275 Modules linked in: CPU: 0 UID: 0 PID: 275 Comm: syz-executor.0 Not tainted 6.19.0-rc5-next-20260116 #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 d6 b7 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 4d 74 03 e8 2c 5d 56 00 e9 RSP: 0018:ffff88801b32f9e0 EFLAGS: 00010286 RAX: 00000000ffffffff RBX: ffff88801bc75280 RCX: ffffffff815660f7 RDX: 0000000000000000 RSI: ffffffff81566100 RDI: ffff88801bc7567c RBP: ffff88801bc75280 R08: 0000000000000000 R09: fffffbfff0ba7040 R10: 0000000000000000 R11: 0000000000000001 R12: ffff88801bc75280 R13: 0000000000000001 R14: ffffffff85c10620 R15: ffff88801c538318 FS: 000055555d4ba400(0000) GS:ffff8880e5342000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000555574c5fc58 CR3: 0000000013c09000 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 filename_mkdirat+0x118/0x430 __x64_sys_mkdir+0x6e/0xd0 do_syscall_64+0xbf/0x420 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f47e1358c27 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:00007fff4374cbc8 EFLAGS: 00000202 ORIG_RAX: 0000000000000053 RAX: ffffffffffffffda RBX: 00007fff4374cc50 RCX: 00007f47e1358c27 RDX: 0000000000000000 RSI: 00000000000001ff RDI: 00007fff4374cc50 RBP: 00007fff4374cc2c R08: 0000000000000000 R09: 0000000000000003 R10: 00007fff4374c967 R11: 0000000000000202 R12: 0000000000000032 R13: 00000000000272f5 R14: 0000000000000006 R15: 00007fff4374cc90 irq event stamp: 201941 hardirqs last enabled at (201941): [] _raw_spin_unlock_irqrestore+0x2c/0x50 hardirqs last disabled at (201940): [] _raw_spin_lock_irqsave+0x53/0x60 softirqs last enabled at (201936): [] kernel_fpu_end+0x59/0x70 softirqs last disabled at (201934): [] kernel_fpu_begin_mask+0x1bb/0x300 ---[ end trace 0000000000000000 ]--- tmpfs: Bad value for 'mpol' audit: type=1400 audit(1768843577.223:13): avc: denied { read } for pid=4111 comm="syz-executor.1" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=perf_event permissive=1 tmpfs: Bad value for 'mpol' EXT4-fs (loop5): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback. ext4 filesystem being mounted at /syzkaller-testdir569028033/syzkaller.7YO43v/4/file0 supports timestamps until 2038-01-19 (0x7fffffff) EXT4-fs (loop5): unmounting filesystem 00000000-0000-0000-0000-000000000000. Bluetooth: hci1: Controller not accepting commands anymore: ncmd = 0 Bluetooth: hci1: Injecting HCI hardware error event Bluetooth: hci1: hardware error 0x00 Bluetooth: hci1: Opcode 0x0c03 failed: -110 loop3: detected capacity change from 0 to 512 loop6: detected capacity change from 0 to 111 vfat: Bad value for 'time_offset' ext4: Unknown parameter 'lataWerr' UDPLite6: UDP-Lite is deprecated and scheduled to be removed in 2025, please contact the netdev mailing list audit: type=1400 audit(1768843585.660:14): avc: denied { tracepoint } for pid=4164 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 sr 1:0:0:0: [sr0] tag#0 FAILED Result: hostbyte=DID_OK driverbyte=DRIVER_OK cmd_age=0s sr 1:0:0:0: [sr0] tag#0 Sense Key : Not Ready [current] sr 1:0:0:0: [sr0] tag#0 Add. Sense: Medium not present sr 1:0:0:0: [sr0] tag#0 CDB: Read(10) 28 00 00 00 00 00 00 00 40 00 I/O error, dev sr0, sector 0 op 0x0:(READ) flags 0x4000 phys_seg 32 prio class 2 loop6: detected capacity change from 0 to 111 vfat: Bad value for 'time_offset' sr 1:0:0:0: [sr0] tag#0 FAILED Result: hostbyte=DID_OK driverbyte=DRIVER_OK cmd_age=0s sr 1:0:0:0: [sr0] tag#0 Sense Key : Not Ready [current] sr 1:0:0:0: [sr0] tag#0 Add. Sense: Medium not present sr 1:0:0:0: [sr0] tag#0 CDB: Read(10) 28 00 00 00 00 40 00 00 40 00 I/O error, dev sr0, sector 256 op 0x0:(READ) flags 0x4000 phys_seg 32 prio class 2 loop4: detected capacity change from 0 to 128 vfat: Unknown parameter 'bd_V5w.G  ta GKd{YN"YJNy˿ԉCm{JLjzIwIkVp>3bx骄0?yڗn |$ S iY' loop4: detected capacity change from 0 to 128 vfat: Unknown parameter 'bd_V5w.G  ta GKd{YN"YJNy˿ԉCm{JLjzIwIkVp>3bx骄0?yڗn |$ S iY' sr 1:0:0:0: [sr0] tag#0 FAILED Result: hostbyte=DID_OK driverbyte=DRIVER_OK cmd_age=0s sr 1:0:0:0: [sr0] tag#0 Sense Key : Not Ready [current] sr 1:0:0:0: [sr0] tag#0 Add. Sense: Medium not present sr 1:0:0:0: [sr0] tag#0 CDB: Read(10) 28 00 00 00 00 80 00 00 40 00 I/O error, dev sr0, sector 512 op 0x0:(READ) flags 0x4000 phys_seg 32 prio class 2 sr 1:0:0:0: [sr0] tag#0 FAILED Result: hostbyte=DID_OK driverbyte=DRIVER_OK cmd_age=0s sr 1:0:0:0: [sr0] tag#0 Sense Key : Not Ready [current] sr 1:0:0:0: [sr0] tag#0 Add. Sense: Medium not present sr 1:0:0:0: [sr0] tag#0 CDB: Read(10) 28 00 00 00 00 c0 00 00 40 00 I/O error, dev sr0, sector 768 op 0x0:(READ) flags 0x0 phys_seg 32 prio class 2 Bluetooth: hci0: Opcode 0x0c1a failed: -4 Bluetooth: hci0: Error when powering off device on rfkill (-4) Bluetooth: hci2: Opcode 0x0c1a failed: -4 Bluetooth: hci2: Error when powering off device on rfkill (-4) Bluetooth: hci3: Opcode 0x0c1a failed: -4 Bluetooth: hci3: Error when powering off device on rfkill (-4) Bluetooth: hci4: Opcode 0x0c1a failed: -4 Bluetooth: hci4: Error when powering off device on rfkill (-4) Bluetooth: hci5: Opcode 0x0c1a failed: -4 Bluetooth: hci5: Error when powering off device on rfkill (-4) Bluetooth: hci6: Opcode 0x0c1a failed: -4 Bluetooth: hci6: Error when powering off device on rfkill (-4) Bluetooth: hci7: Opcode 0x0c1a failed: -4 Bluetooth: hci7: Error when powering off device on rfkill (-4)