===================================== WARNING: bad unlock balance detected! 6.19.0-rc5-next-20260116 #1 Not tainted ------------------------------------- syz-executor.0/276 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.0/276: #0: ffff88800f6e43f8 (sb_writers#3){.+.+}-{0:0}, at: filename_create+0xf7/0x400 #1: ffff88801aa74698 (&type->i_mutex_dir_key#3/1){+.+.}-{4:4}, at: filename_create+0x1b1/0x400 #2: ffff88800f700950 (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: 276 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: 0033:0x7efccd0b5c27 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:00007ffd0cd29738 EFLAGS: 00000202 ORIG_RAX: 0000000000000053 RAX: ffffffffffffffda RBX: 00007ffd0cd297c0 RCX: 00007efccd0b5c27 RDX: 0000000000000000 RSI: 00000000000001ff RDI: 00007ffd0cd297c0 RBP: 00007ffd0cd2979c R08: 0000000000000000 R09: 0000000000000004 R10: 00007ffd0cd294d6 R11: 0000000000000202 R12: 0000000000000032 R13: 000000000002a7a9 R14: 0000000000000008 R15: 00007ffd0cd29800 ------------[ cut here ]------------ WARNING: kernel/rcu/tree_plugin.h:443 at __rcu_read_unlock+0x25f/0x5c0, CPU#0: syz-executor.0/276 Modules linked in: CPU: 0 UID: 0 PID: 276 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:ffff88801ad8f9e0 EFLAGS: 00010286 RAX: 00000000ffffffff RBX: ffff88800f6db700 RCX: ffffffff815660f7 RDX: 0000000000000000 RSI: ffffffff81566100 RDI: ffff88800f6dbafc RBP: ffff88800f6db700 R08: 0000000000000000 R09: fffffbfff0ba7040 R10: 0000000000000000 R11: 0000000000000001 R12: ffff88800f6db700 R13: 0000000000000001 R14: ffffffff85c0d6a0 R15: ffff88804b008ca0 FS: 0000555578444400(0000) GS:ffff8880e5342000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ffd0cd27ef8 CR3: 000000000c3d6000 CR4: 0000000000350ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600 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: 0033:0x7efccd0b5c27 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:00007ffd0cd29738 EFLAGS: 00000202 ORIG_RAX: 0000000000000053 RAX: ffffffffffffffda RBX: 00007ffd0cd297c0 RCX: 00007efccd0b5c27 RDX: 0000000000000000 RSI: 00000000000001ff RDI: 00007ffd0cd297c0 RBP: 00007ffd0cd2979c R08: 0000000000000000 R09: 0000000000000004 R10: 00007ffd0cd294d6 R11: 0000000000000202 R12: 0000000000000032 R13: 000000000002a7a9 R14: 0000000000000008 R15: 00007ffd0cd29800 irq event stamp: 551703 hardirqs last enabled at (551703): [] _raw_spin_unlock_irqrestore+0x2c/0x50 hardirqs last disabled at (551702): [] _raw_spin_lock_irqsave+0x53/0x60 softirqs last enabled at (551698): [] kernel_fpu_end+0x59/0x70 softirqs last disabled at (551696): [] kernel_fpu_begin_mask+0x1bb/0x300 ---[ end trace 0000000000000000 ]--- syz-executor.5 uses obsolete (PF_INET,SOCK_PACKET) vfat: Bad value for 'uni_xlate' vfat: Bad value for 'uni_xlate' sr 1:0:0:0: [sr0] tag#0 unaligned transfer I/O error, dev sr0, sector 0 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 2 netlink: 12 bytes leftover after parsing attributes in process `syz-executor.1'. netlink: 12 bytes leftover after parsing attributes in process `syz-executor.1'. netlink: 12 bytes leftover after parsing attributes in process `syz-executor.1'. perf: interrupt took too long (3164 > 3135), lowering kernel.perf_event_max_sample_rate to 63000 perf: interrupt took too long (3960 > 3955), lowering kernel.perf_event_max_sample_rate to 50000 perf: interrupt took too long (4961 > 4950), lowering kernel.perf_event_max_sample_rate to 40000 perf: interrupt took too long (6208 > 6201), lowering kernel.perf_event_max_sample_rate to 32000 netlink: 12 bytes leftover after parsing attributes in process `syz-executor.1'. loop2: detected capacity change from 0 to 131078 UDPLite: UDP-Lite is deprecated and scheduled to be removed in 2025, please contact the netdev mailing list loop2: detected capacity change from 0 to 131078 loop4: detected capacity change from 0 to 131078 loop2: detected capacity change from 0 to 131078 loop4: detected capacity change from 0 to 131078 loop2: detected capacity change from 0 to 131078 loop4: detected capacity change from 0 to 131078 netlink: 20 bytes leftover after parsing attributes in process `syz-executor.0'. ieee80211 phy20: Selected rate control algorithm 'minstrel_ht' netlink: 20 bytes leftover after parsing attributes in process `syz-executor.0'. ieee80211 phy21: Selected rate control algorithm 'minstrel_ht' netlink: 20 bytes leftover after parsing attributes in process `syz-executor.0'. ieee80211 phy22: Selected rate control algorithm 'minstrel_ht' audit: type=1400 audit(1768575951.013:19): avc: denied { setattr } for pid=6624 comm="syz-executor.2" name="current" dev="proc" ino=13102 scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=file permissive=1 netlink: 20 bytes leftover after parsing attributes in process `syz-executor.0'. ieee80211 phy23: Selected rate control algorithm 'minstrel_ht' sit: Dst spoofed 0.0.0.0/2002::2000 -> 0.0.0.0/2002:7bc3:78dc:2b7a:200:5efe:238.255.63.0 sit: Dst spoofed 0.0.0.0/2002::2000 -> 0.0.0.0/2002:7bc3:78dc:2b7a:200:5efe:238.255.63.0 netlink: 20 bytes leftover after parsing attributes in process `syz-executor.0'. ieee80211 phy24: Selected rate control algorithm 'minstrel_ht' audit: type=1326 audit(1768575951.293:20): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=6676 comm="syz-executor.1" exe="/syz-executor.1" sig=9 arch=c000003e syscall=231 compat=0 ip=0x7fce3b539b19 code=0x0 audit: type=1326 audit(1768575952.124:21): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=6676 comm="syz-executor.1" exe="/syz-executor.1" sig=9 arch=c000003e syscall=231 compat=0 ip=0x7fce3b539b19 code=0x0 9p: Unknown uid 00000000004294967295 9p: Unknown uid 00000000004294967295 perf: interrupt took too long (7769 > 7760), lowering kernel.perf_event_max_sample_rate to 25000 Bluetooth: hci1: unexpected event for opcode 0x041c Bluetooth: hci1: unexpected event for opcode 0x041c Bluetooth: hci1: unexpected event for opcode 0x041c Bluetooth: hci1: unexpected event for opcode 0x041c audit: type=1400 audit(1768575955.132:22): avc: denied { ingress } for pid=6903 comm="syz-executor.0" saddr=fe88::1 src=65535 daddr=fe80::aa dest=17281 netif=wlan0 scontext=system_u:object_r:system_dbusd_var_lib_t:s0 tcontext=system_u:object_r:netif_t:s0 tclass=netif permissive=1 audit: type=1400 audit(1768575955.132:23): avc: denied { recvfrom } for pid=6903 comm="syz-executor.0" saddr=fe88::1 src=65535 daddr=fe80::aa dest=17281 netif=wlan0 scontext=system_u:object_r:system_dbusd_var_lib_t:s0 tcontext=system_u:object_r:node_t:s0 tclass=node permissive=1 audit: type=1400 audit(1768575955.132:24): avc: denied { recv } for pid=6903 comm="syz-executor.0" saddr=fe88::1 src=65535 daddr=fe80::aa dest=17281 netif=wlan0 scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:object_r:system_dbusd_var_lib_t:s0 tclass=peer permissive=1 Bluetooth: hci1: unexpected event for opcode 0x041c program syz-executor.4 is using a deprecated SCSI ioctl, please convert it to SG_IO