===================================== WARNING: bad unlock balance detected! 6.19.0-rc5-next-20260113 #1 Not tainted ------------------------------------- syz-executor.6/7045 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.6/7045: #0: ffff88800f8ca3f8 (sb_writers#3){.+.+}-{0:0}, at: filename_create+0xf7/0x400 #1: ffff8880460a96f0 (&type->i_mutex_dir_key#3/1){+.+.}-{4:4}, at: filename_create+0x1b1/0x400 #2: ffff88800f8ce950 (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: 7045 Comm: syz-executor.6 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: 0033:0x7f0bdf2fe427 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:00007ffe285f1e68 EFLAGS: 00000206 ORIG_RAX: 0000000000000058 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f0bdf2fe427 RDX: ffffffffffffffbc RSI: 00007f0bdf35900e RDI: 00007f0bdf3581dd RBP: 0000000000000000 R08: 0000000000000000 R09: 00007ffe285f18e0 R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000001 R13: 0000000000000000 R14: 0000000000000001 R15: 00007ffe285f1f30 ------------[ cut here ]------------ WARNING: kernel/rcu/tree_plugin.h:443 at __rcu_read_unlock+0x25f/0x5c0, CPU#0: syz-executor.6/7045 Modules linked in: CPU: 0 UID: 0 PID: 7045 Comm: syz-executor.6 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:ffff8880417a79a0 EFLAGS: 00010286 RAX: 00000000ffffffff RBX: ffff88804a25d280 RCX: ffffffff815664c7 RDX: 0000000000000000 RSI: ffffffff815664d0 RDI: ffff88804a25d67c RBP: ffff88804a25d280 R08: 0000000000000000 R09: fffffbfff0ba6ff4 R10: 0000000000000000 R11: 0000000000000001 R12: ffff88804a25d280 R13: 0000000000000001 R14: ffffffff85c0ca70 R15: ffff8880460ac5d0 FS: 0000555563c53400(0000) GS:ffff8880e5342000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fbc06994db0 CR3: 000000004a41c000 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: 0033:0x7f0bdf2fe427 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:00007ffe285f1e68 EFLAGS: 00000206 ORIG_RAX: 0000000000000058 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f0bdf2fe427 RDX: ffffffffffffffbc RSI: 00007f0bdf35900e RDI: 00007f0bdf3581dd RBP: 0000000000000000 R08: 0000000000000000 R09: 00007ffe285f18e0 R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000001 R13: 0000000000000000 R14: 0000000000000001 R15: 00007ffe285f1f30 irq event stamp: 633 hardirqs last enabled at (633): [] _raw_spin_unlock_irqrestore+0x2c/0x50 hardirqs last disabled at (632): [] _raw_spin_lock_irqsave+0x53/0x60 softirqs last enabled at (628): [] kernel_fpu_end+0x59/0x70 softirqs last disabled at (626): [] kernel_fpu_begin_mask+0x1bb/0x300 ---[ end trace 0000000000000000 ]--- audit: type=1400 audit(1768347860.792:17): avc: denied { watch_reads } for pid=7052 comm="syz-executor.1" path="/syzkaller-testdir055378226/syzkaller.b7BVWP/69/file0" dev="tmpfs" ino=1 scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:object_r:tmpfs_t:s0 tclass=dir permissive=1 FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 CPU: 1 UID: 0 PID: 7066 Comm: syz-executor.0 Tainted: G W 6.19.0-rc5-next-20260113 #1 PREEMPT(lazy) Tainted: [W]=WARN Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 Call Trace: dump_stack_lvl+0xfa/0x120 should_fail_ex+0x4d7/0x5e0 should_failslab+0xc2/0x120 __kmalloc_noprof+0xd6/0x880 genl_family_rcv_msg_attrs_parse.constprop.0+0xdb/0x290 genl_family_rcv_msg_doit+0xab/0x2f0 genl_rcv_msg+0x532/0x7e0 netlink_rcv_skb+0x147/0x430 genl_rcv+0x28/0x40 netlink_unicast+0x5a7/0x870 netlink_sendmsg+0x8a3/0xd80 ____sys_sendmsg+0xa34/0xbf0 ___sys_sendmsg+0x10f/0x1b0 __sys_sendmsg+0x150/0x200 do_syscall_64+0xbf/0x420 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f3224c25b19 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:00007f322219b188 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007f3224d38f60 RCX: 00007f3224c25b19 RDX: 0000000000000000 RSI: 0000000020000280 RDI: 0000000000000003 RBP: 00007f322219b1d0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 R13: 00007ffc58716f6f R14: 00007f322219b300 R15: 0000000000022000 netlink: 'syz-executor.6': attribute type 1 has an invalid length. FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 CPU: 1 UID: 0 PID: 7098 Comm: syz-executor.0 Tainted: G W 6.19.0-rc5-next-20260113 #1 PREEMPT(lazy) Tainted: [W]=WARN Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 Call Trace: dump_stack_lvl+0xfa/0x120 should_fail_ex+0x4d7/0x5e0 should_failslab+0xc2/0x120 __kmalloc_cache_noprof+0x80/0x780 nl80211_register_beacons+0xc6/0x390 genl_family_rcv_msg_doit+0x1fe/0x2f0 genl_rcv_msg+0x532/0x7e0 netlink_rcv_skb+0x147/0x430 genl_rcv+0x28/0x40 netlink_unicast+0x5a7/0x870 netlink_sendmsg+0x8a3/0xd80 ____sys_sendmsg+0xa34/0xbf0 ___sys_sendmsg+0x10f/0x1b0 __sys_sendmsg+0x150/0x200 do_syscall_64+0xbf/0x420 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f3224c25b19 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:00007f322219b188 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007f3224d38f60 RCX: 00007f3224c25b19 RDX: 0000000000000000 RSI: 0000000020000280 RDI: 0000000000000003 RBP: 00007f322219b1d0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 R13: 00007ffc58716f6f R14: 00007f322219b300 R15: 0000000000022000