===================================== WARNING: bad unlock balance detected! 6.19.0-rc5-next-20260116 #1 Not tainted ------------------------------------- syz-executor.0/280 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.0/280: #0: ffff88800faee3f8 (sb_writers#3){.+.+}-{0:0}, at: filename_create+0xf7/0x400 #1: ffff88801c860d68 (&type->i_mutex_dir_key#3/1){+.+.}-{4:4}, at: filename_create+0x1b1/0x400 #2: ffff88800fafa950 (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: 280 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: 0033:0x7f7d4df33c27 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:00007ffeb5836478 EFLAGS: 00000206 ORIG_RAX: 0000000000000053 RAX: ffffffffffffffda RBX: 00007ffeb5836500 RCX: 00007f7d4df33c27 RDX: 0000000000000000 RSI: 00000000000001ff RDI: 00007ffeb5836500 RBP: 00007ffeb58364dc R08: 0000000000000000 R09: 0000000000000003 R10: 00007ffeb5836217 R11: 0000000000000206 R12: 0000000000000032 R13: 00000000000284ef R14: 0000000000000007 R15: 00007ffeb5836540 ------------[ cut here ]------------ WARNING: kernel/rcu/tree_plugin.h:443 at __rcu_read_unlock+0x25f/0x5c0, CPU#0: syz-executor.0/280 Modules linked in: CPU: 0 UID: 0 PID: 280 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:ffff88801a0cf9e0 EFLAGS: 00010286 RAX: 00000000ffffffff RBX: ffff88801be03700 RCX: ffffffff815660f7 RDX: 0000000000000000 RSI: ffffffff81566100 RDI: ffff88801be03afc RBP: ffff88801be03700 R08: 0000000000000000 R09: fffffbfff0ba7040 R10: 0000000000000000 R11: 0000000000000001 R12: ffff88801be03700 R13: 0000000000000001 R14: ffffffff85c0cf70 R15: ffff888014730318 FS: 0000555593425400(0000) GS:ffff8880e5342000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ffeb5834c38 CR3: 000000000ddba000 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: 0033:0x7f7d4df33c27 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:00007ffeb5836478 EFLAGS: 00000206 ORIG_RAX: 0000000000000053 RAX: ffffffffffffffda RBX: 00007ffeb5836500 RCX: 00007f7d4df33c27 RDX: 0000000000000000 RSI: 00000000000001ff RDI: 00007ffeb5836500 RBP: 00007ffeb58364dc R08: 0000000000000000 R09: 0000000000000003 R10: 00007ffeb5836217 R11: 0000000000000206 R12: 0000000000000032 R13: 00000000000284ef R14: 0000000000000007 R15: 00007ffeb5836540 irq event stamp: 210095 hardirqs last enabled at (210095): [] _raw_spin_unlock_irqrestore+0x2c/0x50 hardirqs last disabled at (210094): [] _raw_spin_lock_irqsave+0x53/0x60 softirqs last enabled at (210090): [] kernel_fpu_end+0x59/0x70 softirqs last disabled at (210088): [] kernel_fpu_begin_mask+0x1bb/0x300 ---[ end trace 0000000000000000 ]--- ieee802154 phy0 wpan0: encryption failed: -22 ieee802154 phy0 wpan0: encryption failed: -22 tmpfs: Unknown parameter 'huge(smackfsfloor' tmpfs: Unknown parameter 'huge(smackfsfloor' ieee802154 phy0 wpan0: encryption failed: -22 ieee802154 phy0 wpan0: encryption failed: -22 audit: type=1400 audit(1768825345.821:10): avc: denied { write } for pid=4133 comm="syz-executor.0" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=perf_event permissive=1 ieee802154 phy0 wpan0: encryption failed: -22 SELinux: unrecognized netlink message: protocol=0 nlmsg_type=131 sclass=netlink_route_socket pid=4149 comm=syz-executor.2 SELinux: unrecognized netlink message: protocol=0 nlmsg_type=131 sclass=netlink_route_socket pid=4158 comm=syz-executor.2 ieee802154 phy0 wpan0: encryption failed: -22 ieee802154 phy0 wpan0: encryption failed: -22 loop3: detected capacity change from 0 to 6 vfat: Unknown parameter 'ӡSXĺm' loop3: detected capacity change from 0 to 6 vfat: Unknown parameter 'ӡSXĺm' loop7: detected capacity change from 0 to 264192 ieee802154 phy0 wpan0: encryption failed: -22 loop7: detected capacity change from 0 to 264192