===================================== WARNING: bad unlock balance detected! 6.19.0-rc5-next-20260113 #1 Not tainted ------------------------------------- syz-executor.1/4347 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.1/4347: #0: ffff88800f5363f8 (sb_writers#3){.+.+}-{0:0}, at: filename_create+0xf7/0x400 #1: ffff888048e13388 (&type->i_mutex_dir_key#3/1){+.+.}-{4:4}, at: filename_create+0x1b1/0x400 #2: ffff88800f9e2950 (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: 4347 Comm: syz-executor.1 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: 0033:0x7fbcf8777427 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:00007ffd00527ea8 EFLAGS: 00000202 ORIG_RAX: 0000000000000058 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fbcf8777427 RDX: 00007ffd00527f83 RSI: 00007fbcf87d2022 RDI: 00007ffd00527f70 RBP: 0000000000000000 R08: 0000000000000000 R09: 00007ffd00527d40 R10: 00007ffd00527bf7 R11: 0000000000000202 R12: 0000000000000001 R13: 0000000000000000 R14: 0000000000000001 R15: 00007ffd00527f70 ------------[ cut here ]------------ WARNING: kernel/rcu/tree_plugin.h:443 at __rcu_read_unlock+0x25f/0x5c0, CPU#0: syz-executor.1/4347 Modules linked in: CPU: 0 UID: 0 PID: 4347 Comm: syz-executor.1 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:ffff888049ddf9a0 EFLAGS: 00010286 RAX: 00000000ffffffff RBX: ffff888048321b80 RCX: ffffffff815664c7 RDX: 0000000000000000 RSI: ffffffff815664d0 RDI: ffff888048321f7c RBP: ffff888048321b80 R08: 0000000000000000 R09: fffffbfff0ba6ff4 R10: 0000000000000000 R11: 0000000000000001 R12: ffff888048321b80 R13: 0000000000000001 R14: ffffffff85c0cf70 R15: ffff888048e13c48 FS: 0000555572b82400(0000) GS:ffff8880e5342000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000555572b82708 CR3: 000000000db05000 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: 0033:0x7fbcf8777427 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:00007ffd00527ea8 EFLAGS: 00000202 ORIG_RAX: 0000000000000058 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fbcf8777427 RDX: 00007ffd00527f83 RSI: 00007fbcf87d2022 RDI: 00007ffd00527f70 RBP: 0000000000000000 R08: 0000000000000000 R09: 00007ffd00527d40 R10: 00007ffd00527bf7 R11: 0000000000000202 R12: 0000000000000001 R13: 0000000000000000 R14: 0000000000000001 R15: 00007ffd00527f70 irq event stamp: 267 hardirqs last enabled at (267): [] _raw_spin_unlock_irqrestore+0x2c/0x50 hardirqs last disabled at (266): [] _raw_spin_lock_irqsave+0x53/0x60 softirqs last enabled at (262): [] kernel_fpu_end+0x59/0x70 softirqs last disabled at (260): [] kernel_fpu_begin_mask+0x1bb/0x300 ---[ end trace 0000000000000000 ]--- mmap: syz-executor.1 (4391) uses deprecated remap_file_pages() syscall. See Documentation/mm/remap_file_pages.rst. loop1: detected capacity change from 0 to 512 EXT4-fs (loop1): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: none. loop7: detected capacity change from 0 to 256 EXT4-fs (loop1): unmounting filesystem 00000000-0000-0000-0000-000000000000. ISO 9660 Extensions: Microsoft Joliet Level 0 ISO 9660 Extensions: loop1: detected capacity change from 0 to 512 EXT4-fs (loop1): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: none. EXT4-fs (loop1): unmounting filesystem 00000000-0000-0000-0000-000000000000. loop1: detected capacity change from 0 to 512 EXT4-fs (loop1): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: none. EXT4-fs (loop1): unmounting filesystem 00000000-0000-0000-0000-000000000000. loop1: detected capacity change from 0 to 512 EXT4-fs (loop1): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: none. EXT4-fs (loop1): unmounting filesystem 00000000-0000-0000-0000-000000000000. netlink: 4 bytes leftover after parsing attributes in process `syz-executor.0'. netlink: 4 bytes leftover after parsing attributes in process `syz-executor.0'. hugetlbfs: Unknown parameter './file0' capability: warning: `syz-executor.6' uses 32-bit capabilities (legacy support in use) loop0: detected capacity change from 0 to 136 ISOFS: Unable to identify CD-ROM format. loop0: detected capacity change from 0 to 136 ISOFS: Unable to identify CD-ROM format. loop0: detected capacity change from 0 to 136 ISOFS: Unable to identify CD-ROM format. loop0: detected capacity change from 0 to 136 ISOFS: Unable to identify CD-ROM format. loop0: detected capacity change from 0 to 136 ISOFS: Unable to identify CD-ROM format. Bluetooth: hci0: Opcode 0x0c1a failed: -4 Bluetooth: hci0: Opcode 0x0406 failed: -4 Bluetooth: hci0: Opcode 0x0406 failed: -4 Bluetooth: hci1: Opcode 0x0c1a failed: -4 Bluetooth: hci1: Opcode 0x0406 failed: -4 Bluetooth: hci1: Opcode 0x0406 failed: -4 Bluetooth: hci2: Opcode 0x0c1a failed: -4 Bluetooth: hci2: Opcode 0x0406 failed: -4 Bluetooth: hci2: Opcode 0x0406 failed: -4 Bluetooth: hci3: Opcode 0x0c1a failed: -4 Bluetooth: hci3: Opcode 0x0406 failed: -4 Bluetooth: hci3: Opcode 0x0406 failed: -4 Bluetooth: hci4: Opcode 0x0c1a failed: -4 Bluetooth: hci4: Opcode 0x0406 failed: -4 Bluetooth: hci4: Opcode 0x0406 failed: -4 Bluetooth: hci5: Opcode 0x0c1a failed: -4 Bluetooth: hci5: Opcode 0x0406 failed: -4 Bluetooth: hci5: Opcode 0x0406 failed: -4 Bluetooth: hci6: Opcode 0x0c1a failed: -4 Bluetooth: hci6: Opcode 0x0406 failed: -4 Bluetooth: hci6: Opcode 0x0406 failed: -4 Bluetooth: hci7: Opcode 0x0c1a failed: -4 Bluetooth: hci7: Opcode 0x0406 failed: -4 Bluetooth: hci7: Opcode 0x0406 failed: -4 EXT4-fs warning (device sda): ext4_block_to_path:105: block 2147483647 > max in inode 16003 EXT4-fs warning (device sda): ext4_block_to_path:105: block 2147483647 > max in inode 16003 No source specified No source specified No source specified No source specified Bluetooth: hci0: command 0x0c1a tx timeout Bluetooth: hci5: command 0x0c1a tx timeout Bluetooth: hci4: command 0x0c1a tx timeout Bluetooth: hci3: command 0x0c1a tx timeout Bluetooth: hci2: command 0x0c1a tx timeout Bluetooth: hci1: command 0x0c1a tx timeout Bluetooth: hci7: command 0x0c1a tx timeout Bluetooth: hci6: command 0x0c1a tx timeout loop4: detected capacity change from 0 to 512 No source specified EXT4-fs error (device loop4): __ext4_fill_super:5553: inode #2: comm syz-executor.4: iget: special inode unallocated No source specified EXT4-fs (loop4): get root inode failed EXT4-fs (loop4): mount failed loop4: detected capacity change from 0 to 512 tmpfs: Bad value for 'mpol' tmpfs: Bad value for 'mpol' netlink: 4 bytes leftover after parsing attributes in process `syz-executor.7'. syz-executor.4 uses obsolete (PF_INET,SOCK_PACKET) Bluetooth: hci0: command 0x0c1a tx timeout Bluetooth: hci1: command 0x0c1a tx timeout Bluetooth: hci4: command 0x0c1a tx timeout Bluetooth: hci3: command 0x0c1a tx timeout Bluetooth: hci2: command 0x0c1a tx timeout Bluetooth: hci5: command 0x0c1a tx timeout Bluetooth: hci7: command 0x0c1a tx timeout Bluetooth: hci6: command 0x0c1a tx timeout sr 1:0:0:0: [sr0] tag#0 unaligned transfer I/O error, dev sr0, sector 2087 op 0x0:(READ) flags 0x800000 phys_seg 1 prio class 2 sr 1:0:0:0: [sr0] tag#0 unaligned transfer I/O error, dev sr0, sector 2087 op 0x0:(READ) flags 0x800000 phys_seg 1 prio class 2 sr 1:0:0:0: [sr0] tag#0 unaligned transfer I/O error, dev sr0, sector 0 op 0x1:(WRITE) flags 0x804800 phys_seg 127 prio class 2 Buffer I/O error on dev sr0, logical block 0, lost async page write Buffer I/O error on dev sr0, logical block 1, lost async page write Buffer I/O error on dev sr0, logical block 2, lost async page write Buffer I/O error on dev sr0, logical block 3, lost async page write Buffer I/O error on dev sr0, logical block 4, lost async page write Buffer I/O error on dev sr0, logical block 5, lost async page write Buffer I/O error on dev sr0, logical block 6, lost async page write Buffer I/O error on dev sr0, logical block 7, lost async page write Buffer I/O error on dev sr0, logical block 8, lost async page write Buffer I/O error on dev sr0, logical block 9, lost async page write sr 1:0:0:0: [sr0] tag#0 unaligned transfer I/O error, dev sr0, sector 127 op 0x1:(WRITE) flags 0x804800 phys_seg 127 prio class 2 sr 1:0:0:0: [sr0] tag#0 unaligned transfer I/O error, dev sr0, sector 254 op 0x1:(WRITE) flags 0x804800 phys_seg 127 prio class 2 sr 1:0:0:0: [sr0] tag#0 unaligned transfer I/O error, dev sr0, sector 381 op 0x1:(WRITE) flags 0x804800 phys_seg 127 prio class 2 sr 1:0:0:0: [sr0] tag#0 unaligned transfer I/O error, dev sr0, sector 508 op 0x1:(WRITE) flags 0x804800 phys_seg 127 prio class 2 sr 1:0:0:0: [sr0] tag#0 unaligned transfer I/O error, dev sr0, sector 635 op 0x1:(WRITE) flags 0x804800 phys_seg 127 prio class 2 sr 1:0:0:0: [sr0] tag#0 unaligned transfer I/O error, dev sr0, sector 762 op 0x1:(WRITE) flags 0x804800 phys_seg 127 prio class 2 sr 1:0:0:0: [sr0] tag#0 unaligned transfer I/O error, dev sr0, sector 889 op 0x1:(WRITE) flags 0x804800 phys_seg 127 prio class 2 sr 1:0:0:0: [sr0] tag#0 unaligned transfer sr 1:0:0:0: [sr0] tag#0 unaligned transfer sr 1:0:0:0: [sr0] tag#0 unaligned transfer sr 1:0:0:0: [sr0] tag#0 unaligned transfer sr 1:0:0:0: [sr0] tag#0 unaligned transfer sr 1:0:0:0: [sr0] tag#0 unaligned transfer sr 1:0:0:0: [sr0] tag#0 unaligned transfer sr 1:0:0:0: [sr0] tag#0 unaligned transfer 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 : Illegal Request [current] sr 1:0:0:0: [sr0] tag#0 Add. Sense: Invalid command operation code sr 1:0:0:0: [sr0] tag#0 CDB: Write(10) 2a 00 00 00 01 fc 00 00 0c 00 Bluetooth: hci7: unexpected event 0x3e length: 431 > 260 Bluetooth: hci7: unexpected subevent 0x0d length: 430 > 260 Bluetooth: hci7: Malformed LE Event: 0x0d Bluetooth: hci7: unexpected event 0x3e length: 431 > 260 Bluetooth: hci7: unexpected subevent 0x0d length: 430 > 260 Bluetooth: hci7: Malformed LE Event: 0x0d PM: Enabling pm_trace changes system date and time during resume. PM: Correct system time has to be restored manually after resume. Bluetooth: hci0: command 0x0c1a tx timeout netlink: 12 bytes leftover after parsing attributes in process `syz-executor.4'. netlink: 12 bytes leftover after parsing attributes in process `syz-executor.4'. sr 1:0:0:0: [sr0] tag#0 unaligned transfer sr 1:0:0:0: [sr0] tag#0 unaligned transfer netlink: 12 bytes leftover after parsing attributes in process `syz-executor.4'. 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 : Illegal Request [current] sr 1:0:0:0: [sr0] tag#0 Add. Sense: Invalid command operation code sr 1:0:0:0: [sr0] tag#0 CDB: Write(10) 2a 00 00 00 00 00 00 00 02 00 sr 1:0:0:0: [sr0] tag#0 unaligned transfer sr 1:0:0:0: [sr0] tag#0 unaligned transfer sr 1:0:0:0: [sr0] tag#0 unaligned transfer sr 1:0:0:0: [sr0] tag#0 unaligned transfer sr 1:0:0:0: [sr0] tag#0 unaligned transfer sr 1:0:0:0: [sr0] tag#0 unaligned transfer sr 1:0:0:0: [sr0] tag#0 unaligned transfer sr 1:0:0:0: [sr0] tag#0 unaligned transfer sr 1:0:0:0: [sr0] tag#0 unaligned transfer sr 1:0:0:0: [sr0] tag#0 unaligned transfer sr 1:0:0:0: [sr0] tag#0 unaligned transfer sr 1:0:0:0: [sr0] tag#0 unaligned transfer sr 1:0:0:0: [sr0] tag#0 unaligned transfer sr 1:0:0:0: [sr0] tag#0 unaligned transfer sr 1:0:0:0: [sr0] tag#0 unaligned transfer sr 1:0:0:0: [sr0] tag#0 unaligned transfer 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 : Illegal Request [current] sr 1:0:0:0: [sr0] tag#0 Add. Sense: Invalid command operation code sr 1:0:0:0: [sr0] tag#0 CDB: Write(10) 2a 00 00 00 01 fe 00 00 0a 00 sr 1:0:0:0: [sr0] tag#0 unaligned transfer netlink: 4 bytes leftover after parsing attributes in process `syz-executor.2'. netlink: 12 bytes leftover after parsing attributes in process `syz-executor.4'. sr 1:0:0:0: [sr0] tag#0 unaligned transfer loop7: detected capacity change from 0 to 81920 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 : Illegal Request [current] sr 1:0:0:0: [sr0] tag#0 Add. Sense: Invalid command operation code sr 1:0:0:0: [sr0] tag#0 CDB: Write(10) 2a 00 00 00 00 00 00 00 02 00 sr 1:0:0:0: [sr0] tag#0 unaligned transfer sr 1:0:0:0: [sr0] tag#0 unaligned transfer sr 1:0:0:0: [sr0] tag#0 unaligned transfer sr 1:0:0:0: [sr0] tag#0 unaligned transfer sr 1:0:0:0: [sr0] tag#0 unaligned transfer sr 1:0:0:0: [sr0] tag#0 unaligned transfer sr 1:0:0:0: [sr0] tag#0 unaligned transfer sr 1:0:0:0: [sr0] tag#0 unaligned transfer sr 1:0:0:0: [sr0] tag#0 unaligned transfer sr 1:0:0:0: [sr0] tag#0 unaligned transfer sr 1:0:0:0: [sr0] tag#0 unaligned transfer sr 1:0:0:0: [sr0] tag#0 unaligned transfer sr 1:0:0:0: [sr0] tag#0 unaligned transfer sr 1:0:0:0: [sr0] tag#0 unaligned transfer sr 1:0:0:0: [sr0] tag#0 unaligned transfer sr 1:0:0:0: [sr0] tag#0 unaligned transfer sr 1:0:0:0: [sr0] tag#0 unaligned transfer sr 1:0:0:0: [sr0] tag#0 unaligned transfer sr 1:0:0:0: [sr0] tag#0 FAILED Result: hostbyte=DID_OK driverbyte=DRIVER_OK cmd_age=0s Bluetooth: hci2: command 0x0c1a tx timeout Bluetooth: hci3: command 0x0c1a tx timeout Bluetooth: hci5: command 0x0c1a tx timeout Bluetooth: hci4: command 0x0c1a tx timeout Bluetooth: hci1: command 0x0c1a tx timeout sr 1:0:0:0: [sr0] tag#0 Sense Key : Illegal Request [current] sr 1:0:0:0: [sr0] tag#0 Add. Sense: Invalid command operation code sr 1:0:0:0: [sr0] tag#0 CDB: Write(10) 2a 00 00 00 01 fe 00 00 0a 00 Bluetooth: hci6: command 0x0c1a tx timeout Bluetooth: hci7: command 0x0c1a tx timeout ======================================================= 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. ======================================================= sr 1:0:0:0: [sr0] tag#0 unaligned transfer