===================================== WARNING: bad unlock balance detected! 6.19.0-rc5-next-20260116 #1 Not tainted ------------------------------------- syz-executor.0/274 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.0/274: #0: ffff88800a87e3f8 (sb_writers#3){.+.+}-{0:0}, at: filename_create+0xf7/0x400 #1: ffff88801c386330 (&type->i_mutex_dir_key#3/1){+.+.}-{4:4}, at: filename_create+0x1b1/0x400 #2: ffff88800a82a950 (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: 274 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: 0033:0x7f5957f96c27 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:00007ffdfcf99dc8 EFLAGS: 00000202 ORIG_RAX: 0000000000000053 RAX: ffffffffffffffda RBX: 00007ffdfcf99e50 RCX: 00007f5957f96c27 RDX: 0000000000000000 RSI: 00000000000001ff RDI: 00007ffdfcf99e50 RBP: 00007ffdfcf99e2c R08: 0000000000000000 R09: 0000000000000004 R10: 00007ffdfcf99b66 R11: 0000000000000202 R12: 0000000000000032 R13: 0000000000020d4a R14: 0000000000000002 R15: 00007ffdfcf99e90 ------------[ cut here ]------------ WARNING: kernel/rcu/tree_plugin.h:443 at __rcu_read_unlock+0x25f/0x5c0, CPU#1: syz-executor.0/274 Modules linked in: CPU: 1 UID: 0 PID: 274 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:ffff88800f71f9e0 EFLAGS: 00010286 RAX: 00000000ffffffff RBX: ffff888016bf5280 RCX: ffffffff815660f7 RDX: 0000000000000000 RSI: ffffffff81566100 RDI: ffff888016bf567c RBP: ffff888016bf5280 R08: 0000000000000000 R09: fffffbfff0ba7040 R10: 0000000000000000 R11: 0000000000000001 R12: ffff888016bf5280 R13: 0000000000000001 R14: ffffffff85c0f3b0 R15: ffff8880488e6268 FS: 0000555581f0a400(0000) GS:ffff8880e5442000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00005555729f8c58 CR3: 000000000df15000 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: 0033:0x7f5957f96c27 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:00007ffdfcf99dc8 EFLAGS: 00000202 ORIG_RAX: 0000000000000053 RAX: ffffffffffffffda RBX: 00007ffdfcf99e50 RCX: 00007f5957f96c27 RDX: 0000000000000000 RSI: 00000000000001ff RDI: 00007ffdfcf99e50 RBP: 00007ffdfcf99e2c R08: 0000000000000000 R09: 0000000000000004 R10: 00007ffdfcf99b66 R11: 0000000000000202 R12: 0000000000000032 R13: 0000000000020d4a R14: 0000000000000002 R15: 00007ffdfcf99e90 irq event stamp: 222233 hardirqs last enabled at (222233): [] _raw_spin_unlock_irqrestore+0x2c/0x50 hardirqs last disabled at (222232): [] _raw_spin_lock_irqsave+0x53/0x60 softirqs last enabled at (222228): [] kernel_fpu_end+0x59/0x70 softirqs last disabled at (222226): [] kernel_fpu_begin_mask+0x1bb/0x300 ---[ end trace 0000000000000000 ]--- EXT4-fs (loop7): unmounting filesystem 00000000-0000-0000-0000-000000000000. loop7: detected capacity change from 0 to 512 tmpfs: Unknown parameter './file0/file0' EXT4-fs (loop7): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: none. netlink: 12 bytes leftover after parsing attributes in process `syz-executor.3'. netlink: 12 bytes leftover after parsing attributes in process `syz-executor.3'. EXT4-fs (loop7): unmounting filesystem 00000000-0000-0000-0000-000000000000. loop7: detected capacity change from 0 to 512 EXT4-fs (loop7): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: none. EXT4-fs (loop7): unmounting filesystem 00000000-0000-0000-0000-000000000000. loop7: detected capacity change from 0 to 512 EXT4-fs (loop7): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: none. EXT4-fs (loop7): unmounting filesystem 00000000-0000-0000-0000-000000000000. netlink: 20 bytes leftover after parsing attributes in process `syz-executor.4'. ieee80211 phy18: Selected rate control algorithm 'minstrel_ht' netlink: 20 bytes leftover after parsing attributes in process `syz-executor.4'. ieee80211 phy19: Selected rate control algorithm 'minstrel_ht' netlink: 20 bytes leftover after parsing attributes in process `syz-executor.4'. ieee80211 phy20: Selected rate control algorithm 'minstrel_ht' syz-executor.4 (4268) used greatest stack depth: 23696 bytes left netlink: 20 bytes leftover after parsing attributes in process `syz-executor.4'. ieee80211 phy21: Selected rate control algorithm 'minstrel_ht' netlink: 20 bytes leftover after parsing attributes in process `syz-executor.4'. ieee80211 phy22: Selected rate control algorithm 'minstrel_ht' netlink: 'syz-executor.7': attribute type 13 has an invalid length. syz_tun: refused to change device tx_queue_len netlink: 'syz-executor.7': attribute type 13 has an invalid length. syz_tun: refused to change device tx_queue_len netlink: 'syz-executor.7': attribute type 13 has an invalid length. syz_tun: refused to change device tx_queue_len audit: type=1400 audit(1768577694.170:11): avc: denied { watch } for pid=4441 comm="syz-executor.6" path="/proc/4441/task" dev="proc" ino=5950 scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=dir permissive=1 netlink: 'syz-executor.7': attribute type 13 has an invalid length. syz_tun: refused to change device tx_queue_len netlink: 'syz-executor.7': attribute type 13 has an invalid length. syz_tun: refused to change device tx_queue_len program syz-executor.4 is using a deprecated SCSI ioctl, please convert it to SG_IO program syz-executor.4 is using a deprecated SCSI ioctl, please convert it to SG_IO netlink: 16 bytes leftover after parsing attributes in process `syz-executor.0'. netlink: 16 bytes leftover after parsing attributes in process `syz-executor.0'. netlink: 16 bytes leftover after parsing attributes in process `syz-executor.0'. netlink: 'syz-executor.7': attribute type 30 has an invalid length. netlink: 16 bytes leftover after parsing attributes in process `syz-executor.0'. netlink: 'syz-executor.7': attribute type 30 has an invalid length. netlink: 4 bytes leftover after parsing attributes in process `syz-executor.2'. netlink: 4 bytes leftover after parsing attributes in process `syz-executor.2'. netlink: 16 bytes leftover after parsing attributes in process `syz-executor.0'. audit: type=1400 audit(1768577695.523:12): avc: denied { write } for pid=4542 comm="syz-executor.2" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=perf_event permissive=1 audit: type=1326 audit(1768577696.342:13): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=4602 comm="syz-executor.7" exe="/syz-executor.7" sig=31 arch=c000003e syscall=202 compat=0 ip=0x7fdb3aad5b19 code=0x0 audit: type=1326 audit(1768577696.393:14): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=4602 comm="syz-executor.7" exe="/syz-executor.7" sig=31 arch=c000003e syscall=3 compat=0 ip=0x7fdb3aa8872b code=0x0 audit: type=1326 audit(1768577696.476:15): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=4618 comm="syz-executor.7" exe="/syz-executor.7" sig=31 arch=c000003e syscall=202 compat=0 ip=0x7fdb3aad5b19 code=0x0 audit: type=1326 audit(1768577696.523:16): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=4618 comm="syz-executor.7" exe="/syz-executor.7" sig=31 arch=c000003e syscall=3 compat=0 ip=0x7fdb3aa8872b code=0x0 audit: type=1326 audit(1768577696.575:17): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=4632 comm="syz-executor.7" exe="/syz-executor.7" sig=31 arch=c000003e syscall=202 compat=0 ip=0x7fdb3aad5b19 code=0x0 audit: type=1326 audit(1768577696.623:18): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=4632 comm="syz-executor.7" exe="/syz-executor.7" sig=31 arch=c000003e syscall=3 compat=0 ip=0x7fdb3aa8872b code=0x0 audit: type=1326 audit(1768577696.691:19): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=4648 comm="syz-executor.7" exe="/syz-executor.7" sig=31 arch=c000003e syscall=202 compat=0 ip=0x7fdb3aad5b19 code=0x0 audit: type=1326 audit(1768577696.740:20): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=4648 comm="syz-executor.7" exe="/syz-executor.7" sig=31 arch=c000003e syscall=3 compat=0 ip=0x7fdb3aa8872b code=0x0 ALSA: seq fatal error: cannot create timer (-22) netlink: 20 bytes leftover after parsing attributes in process `syz-executor.5'. ieee80211 phy23: Selected rate control algorithm 'minstrel_ht' netlink: 20 bytes leftover after parsing attributes in process `syz-executor.5'. ieee80211 phy24: Selected rate control algorithm 'minstrel_ht'