===================================== WARNING: bad unlock balance detected! 6.19.0-rc5-next-20260113 #1 Not tainted ------------------------------------- syz-executor.2/6992 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.2/6992: #0: ffff88800fcea3f8 (sb_writers#3){.+.+}-{0:0}, at: filename_create+0xf7/0x400 #1: ffff88804999c698 (&type->i_mutex_dir_key#3/1){+.+.}-{4:4}, at: filename_create+0x1b1/0x400 #2: ffff88800fcee950 (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: 6992 Comm: syz-executor.2 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_mkdir+0x331/0xb30 vfs_mkdir+0x6d8/0xc00 do_mkdirat+0x11a/0x440 __x64_sys_mkdir+0x65/0x80 do_syscall_64+0xbf/0x420 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fe1d0506b19 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:00007fe1cda7c188 EFLAGS: 00000246 ORIG_RAX: 0000000000000053 RAX: ffffffffffffffda RBX: 00007fe1d0619f60 RCX: 00007fe1d0506b19 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000020000580 RBP: 00007fe1d0560f6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffda178b08f R14: 00007fe1cda7c300 R15: 0000000000022000 ------------[ cut here ]------------ WARNING: kernel/rcu/tree_plugin.h:443 at __rcu_read_unlock+0x25f/0x5c0, CPU#0: syz-executor.2/6992 Modules linked in: CPU: 0 UID: 0 PID: 6992 Comm: syz-executor.2 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:ffff88801e5cf9e0 EFLAGS: 00010286 RAX: 00000000ffffffff RBX: ffff88801af18000 RCX: ffffc90008634000 RDX: 0000000000000000 RSI: ffffffff815664d0 RDI: ffff88801af183fc RBP: ffff88801af18000 R08: 0000000000000000 R09: fffffbfff0ba6ff4 R10: 0000000000000000 R11: 0000000000000001 R12: ffff88801af18000 R13: 0000000000000001 R14: ffffffff85c0f770 R15: ffff888049a2a938 FS: 00007fe1cda7c700(0000) GS:ffff8880e5342000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fe1d0616000 CR3: 000000004c554000 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 do_mkdirat+0x11a/0x440 __x64_sys_mkdir+0x65/0x80 do_syscall_64+0xbf/0x420 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fe1d0506b19 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:00007fe1cda7c188 EFLAGS: 00000246 ORIG_RAX: 0000000000000053 RAX: ffffffffffffffda RBX: 00007fe1d0619f60 RCX: 00007fe1d0506b19 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000020000580 RBP: 00007fe1d0560f6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffda178b08f R14: 00007fe1cda7c300 R15: 0000000000022000 irq event stamp: 1861 hardirqs last enabled at (1861): [] irqentry_exit+0x17b/0x650 hardirqs last disabled at (1859): [] handle_softirqs+0x65e/0x7d0 softirqs last enabled at (1860): [] __irq_exit_rcu+0xc4/0x100 softirqs last disabled at (147): [] __irq_exit_rcu+0xc4/0x100 ---[ end trace 0000000000000000 ]--- audit: type=1326 audit(1768296451.221:20): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=7009 comm="syz-executor.1" exe="/syz-executor.1" sig=0 arch=c000003e syscall=202 compat=0 ip=0x7f6ee7a8fb19 code=0x7ffc0000 audit: type=1326 audit(1768296451.222:21): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=7009 comm="syz-executor.1" exe="/syz-executor.1" sig=0 arch=c000003e syscall=202 compat=0 ip=0x7f6ee7a8fb19 code=0x7ffc0000 audit: type=1326 audit(1768296451.228:22): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=7009 comm="syz-executor.1" exe="/syz-executor.1" sig=0 arch=c000003e syscall=100 compat=0 ip=0x7f6ee7a8fb19 code=0x7ffc0000 audit: type=1326 audit(1768296451.228:23): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=7009 comm="syz-executor.1" exe="/syz-executor.1" sig=0 arch=c000003e syscall=202 compat=0 ip=0x7f6ee7a8fb19 code=0x7ffc0000 audit: type=1326 audit(1768296451.228:24): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=7009 comm="syz-executor.1" exe="/syz-executor.1" sig=0 arch=c000003e syscall=202 compat=0 ip=0x7f6ee7a8fb19 code=0x7ffc0000 audit: type=1326 audit(1768296451.229:25): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=7009 comm="syz-executor.1" exe="/syz-executor.1" sig=0 arch=c000003e syscall=317 compat=0 ip=0x7f6ee7a8fb19 code=0x7ffc0000 audit: type=1326 audit(1768296451.229:26): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=7009 comm="syz-executor.1" exe="/syz-executor.1" sig=0 arch=c000003e syscall=202 compat=0 ip=0x7f6ee7a8fb19 code=0x7ffc0000 audit: type=1326 audit(1768296451.229:27): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=7009 comm="syz-executor.1" exe="/syz-executor.1" sig=0 arch=c000003e syscall=202 compat=0 ip=0x7f6ee7a8fb19 code=0x7ffc0000 audit: type=1326 audit(1768296451.229:28): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=7009 comm="syz-executor.1" exe="/syz-executor.1" sig=0 arch=c000003e syscall=100 compat=0 ip=0x7f6ee7a8fb19 code=0x7ffc0000 audit: type=1326 audit(1768296451.345:29): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=7029 comm="syz-executor.1" exe="/syz-executor.1" sig=0 arch=c000003e syscall=202 compat=0 ip=0x7f6ee7a8fb19 code=0x7ffc0000 9pnet_fd: p9_fd_create_tcp (7127): problem connecting socket to 127.0.0.1 9pnet_fd: p9_fd_create_tcp (7158): problem connecting socket to 127.0.0.1 9pnet_fd: p9_fd_create_tcp (7172): problem connecting socket to 127.0.0.1 9pnet_fd: p9_fd_create_tcp (7180): problem connecting socket to 127.0.0.1 9pnet_fd: p9_fd_create_tcp (7182): problem connecting socket to 127.0.0.1 9pnet_fd: p9_fd_create_tcp (7204): problem connecting socket to 127.0.0.1 9pnet_fd: p9_fd_create_tcp (7205): problem connecting socket to 127.0.0.1 9pnet_fd: p9_fd_create_tcp (7215): problem connecting socket to 127.0.0.1 netlink: 12 bytes leftover after parsing attributes in process `syz-executor.4'. 9pnet_fd: p9_fd_create_tcp (7250): problem connecting socket to 127.0.0.1 9pnet_fd: p9_fd_create_tcp (7253): problem connecting socket to 127.0.0.1 9pnet_fd: p9_fd_create_tcp (7251): problem connecting socket to 127.0.0.1 netlink: 28 bytes leftover after parsing attributes in process `syz-executor.6'. serio: Serial port ptm0 netlink: 28 bytes leftover after parsing attributes in process `syz-executor.7'. netlink: 28 bytes leftover after parsing attributes in process `syz-executor.6'. serio: Serial port ptm0 netlink: 28 bytes leftover after parsing attributes in process `syz-executor.7'. netlink: 28 bytes leftover after parsing attributes in process `syz-executor.6'. netlink: 28 bytes leftover after parsing attributes in process `syz-executor.7'. netlink: 28 bytes leftover after parsing attributes in process `syz-executor.6'. netlink: 1 bytes leftover after parsing attributes in process `syz-executor.4'. netlink: 1 bytes leftover after parsing attributes in process `syz-executor.4'.