===================================== WARNING: bad unlock balance detected! 6.19.0-rc5-next-20260114 #1 Not tainted ------------------------------------- syz-executor.0/4084 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.0/4084: #0: ffff88800fbc23f8 (sb_writers#3){.+.+}-{0:0}, at: path_openat+0x1764/0x2d60 #1: ffff88801b7b0d68 (&type->i_mutex_dir_key#3){++++}-{4:4}, at: path_openat+0xe32/0x2d60 #2: ffff88800fbc6950 (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: 4084 Comm: syz-executor.0 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_create+0x2e2/0x4e0 lookup_open.isra.0+0xc03/0x1030 path_openat+0xea4/0x2d60 do_file_open+0x209/0x460 do_sys_openat2+0xe7/0x210 __x64_sys_creat+0xcc/0x120 do_syscall_64+0xbf/0x420 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f120dd64b19 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 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:00007f120b2da188 EFLAGS: 00000246 ORIG_RAX: 0000000000000055 RAX: ffffffffffffffda RBX: 00007f120de77f60 RCX: 00007f120dd64b19 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 00000000200003c0 RBP: 00007f120ddbef6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffe3d69b81f R14: 00007f120b2da300 R15: 0000000000022000 ------------[ cut here ]------------ WARNING: kernel/rcu/tree_plugin.h:443 at __rcu_read_unlock+0x25f/0x5c0, CPU#1: syz-executor.0/4084 Modules linked in: CPU: 1 UID: 0 PID: 4084 Comm: syz-executor.0 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:ffff888017cbf510 EFLAGS: 00010286 RAX: 00000000ffffffff RBX: ffff888049690000 RCX: ffffc90000801000 RDX: 0000000000000000 RSI: ffffffff81565a30 RDI: ffff8880496903fc RBP: ffff888049690000 R08: 0000000000000000 R09: fffffbfff0ba6ffc R10: 0000000000000000 R11: 0000000000000001 R12: ffff888049690000 R13: 0000000000000001 R14: ffffffff85c108a0 R15: ffff88801b61f578 FS: 00007f120b2da700(0000) GS:ffff8880e5443000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f120de71f54 CR3: 000000000e21a000 CR4: 0000000000350ef0 Call Trace: __wait_on_freeing_inode+0x10f/0x350 insert_inode_locked+0x25f/0x890 __ext4_new_inode+0x223d/0x4cd0 ext4_create+0x2e2/0x4e0 lookup_open.isra.0+0xc03/0x1030 path_openat+0xea4/0x2d60 do_file_open+0x209/0x460 do_sys_openat2+0xe7/0x210 __x64_sys_creat+0xcc/0x120 do_syscall_64+0xbf/0x420 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f120dd64b19 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 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:00007f120b2da188 EFLAGS: 00000246 ORIG_RAX: 0000000000000055 RAX: ffffffffffffffda RBX: 00007f120de77f60 RCX: 00007f120dd64b19 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 00000000200003c0 RBP: 00007f120ddbef6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffe3d69b81f R14: 00007f120b2da300 R15: 0000000000022000 irq event stamp: 155 hardirqs last enabled at (155): [] _raw_spin_unlock_irqrestore+0x2c/0x50 hardirqs last disabled at (154): [] _raw_spin_lock_irqsave+0x53/0x60 softirqs last enabled at (150): [] kernel_fpu_end+0x59/0x70 softirqs last disabled at (148): [] kernel_fpu_begin_mask+0x1bb/0x300 ---[ end trace 0000000000000000 ]--- EXT4-fs warning (device sda): verify_group_input:166: Cannot read last block (8912895) loop6: detected capacity change from 0 to 8 EXT4-fs warning (device sda): verify_group_input:166: Cannot read last block (8912895) vfat: Unknown parameter 'nB:m([|] -f*TLB_3%cWQ״VA/% Y4#&]֗ 3GY`EPt;l)B\49ݺ?DqHɲ2a$K4N4ƥY24q#wN%L' loop6: detected capacity change from 0 to 8 audit: type=1400 audit(1768454928.939:11): avc: denied { ingress } for pid=4102 comm="syz-executor.2" saddr=::1 src=20003 daddr=::1 dest=20003 netif=lo scontext=system_u:object_r:modem_device_t:s0 tcontext=system_u:object_r:netif_t:s0 tclass=netif permissive=1 audit: type=1400 audit(1768454928.940:12): avc: denied { recvfrom } for pid=4102 comm="syz-executor.2" saddr=::1 src=20003 daddr=::1 dest=20003 netif=lo scontext=system_u:object_r:modem_device_t:s0 tcontext=system_u:object_r:node_t:s0 tclass=node permissive=1 audit: type=1400 audit(1768454928.940:13): avc: denied { recv } for pid=4102 comm="syz-executor.2" saddr=::1 src=20003 daddr=::1 dest=20003 netif=lo scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:object_r:modem_device_t:s0 tclass=peer permissive=1 process 'syz-executor.5' launched './file1' with NULL argv: empty string added loop7: detected capacity change from 0 to 264192 SELinux: security_context_str_to_sid (unconfined_u) failed with errno=-22 loop4: detected capacity change from 0 to 1024 loop7: detected capacity change from 0 to 264192 SELinux: security_context_str_to_sid (unconfined_u) failed with errno=-22 EXT4-fs (loop4): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: none. EXT4-fs warning (device sda): verify_group_input:166: Cannot read last block (8912895) EXT4-fs (loop4): unmounting filesystem 00000000-0000-0000-0000-000000000000. loop0: detected capacity change from 0 to 133832 ISO 9660 Extensions: Microsoft Joliet Level 3 ISOFS: changing to secondary root loop4: detected capacity change from 0 to 1024 EXT4-fs (loop4): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: none. EXT4-fs (loop4): unmounting filesystem 00000000-0000-0000-0000-000000000000. serio: Serial port ptm1 netlink: 28 bytes leftover after parsing attributes in process `syz-executor.6'. netlink: 28 bytes leftover after parsing attributes in process `syz-executor.6'.