===================================== WARNING: bad unlock balance detected! 6.19.0-rc5-next-20260113 #1 Not tainted ------------------------------------- syz-executor.1/4420 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.1/4420: #0: ffff88800f9123f8 (sb_writers#3){.+.+}-{0:0}, at: filename_create+0xf7/0x400 #1: ffff88801f7316f0 (&type->i_mutex_dir_key#3/1){+.+.}-{4:4}, at: filename_create+0x1b1/0x400 #2: ffff88800f916950 (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: 4420 Comm: syz-executor.1 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: 0033:0x7f478b451427 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:00007ffcb4579f48 EFLAGS: 00000206 ORIG_RAX: 0000000000000058 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f478b451427 RDX: 00007ffcb457a027 RSI: 00007f478b4ac019 RDI: 00007ffcb457a010 RBP: 0000000000000000 R08: 0000000000000000 R09: 00007ffcb4579de0 R10: 00007ffcb4579c97 R11: 0000000000000206 R12: 0000000000000001 R13: 0000000000000001 R14: 0000000000000001 R15: 00007ffcb457a010 ------------[ cut here ]------------ WARNING: kernel/rcu/tree_plugin.h:443 at __rcu_read_unlock+0x25f/0x5c0, CPU#1: syz-executor.1/4420 Modules linked in: CPU: 1 UID: 0 PID: 4420 Comm: syz-executor.1 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:ffff88804a7ef9a0 EFLAGS: 00010286 RAX: 00000000ffffffff RBX: ffff88804a6f1b80 RCX: ffffffff815664c7 RDX: 0000000000000000 RSI: ffffffff815664d0 RDI: ffff88804a6f1f7c RBP: ffff88804a6f1b80 R08: 0000000000000000 R09: fffffbfff0ba6ff4 R10: 0000000000000000 R11: 0000000000000001 R12: ffff88804a6f1b80 R13: 0000000000000001 R14: ffffffff85c0d650 R15: ffff88801f626268 FS: 000055559365d400(0000) GS:ffff8880e5442000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f478b4d1541 CR3: 000000001c15d000 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: 0033:0x7f478b451427 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:00007ffcb4579f48 EFLAGS: 00000206 ORIG_RAX: 0000000000000058 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f478b451427 RDX: 00007ffcb457a027 RSI: 00007f478b4ac019 RDI: 00007ffcb457a010 RBP: 0000000000000000 R08: 0000000000000000 R09: 00007ffcb4579de0 R10: 00007ffcb4579c97 R11: 0000000000000206 R12: 0000000000000001 R13: 0000000000000001 R14: 0000000000000001 R15: 00007ffcb457a010 irq event stamp: 181 hardirqs last enabled at (181): [] _raw_spin_unlock_irqrestore+0x2c/0x50 hardirqs last disabled at (180): [] _raw_spin_lock_irqsave+0x53/0x60 softirqs last enabled at (176): [] kernel_fpu_end+0x59/0x70 softirqs last disabled at (174): [] kernel_fpu_begin_mask+0x1bb/0x300 ---[ end trace 0000000000000000 ]--- netlink: 36 bytes leftover after parsing attributes in process `syz-executor.7'. netlink: 20 bytes leftover after parsing attributes in process `syz-executor.6'. netlink: 36 bytes leftover after parsing attributes in process `syz-executor.7'. netlink: 20 bytes leftover after parsing attributes in process `syz-executor.6'. netlink: 20 bytes leftover after parsing attributes in process `syz-executor.6'. netlink: 20 bytes leftover after parsing attributes in process `syz-executor.6'. netlink: 36 bytes leftover after parsing attributes in process `syz-executor.7'. sr 1:0:0:0: [sr0] CDROM not ready. Make sure there is a disc in the drive. perf: interrupt took too long (4158 > 4077), lowering kernel.perf_event_max_sample_rate to 48000 perf: interrupt took too long (6563 > 6535), lowering kernel.perf_event_max_sample_rate to 30000 perf: interrupt took too long (6563 > 6535), lowering kernel.perf_event_max_sample_rate to 30000 perf: interrupt took too long (8209 > 8203), lowering kernel.perf_event_max_sample_rate to 24000 netlink: 36 bytes leftover after parsing attributes in process `syz-executor.7'. perf: interrupt took too long (10270 > 10261), lowering kernel.perf_event_max_sample_rate to 19000 audit: type=1400 audit(1768296479.262:10): avc: denied { write } for pid=4495 comm="syz-executor.4" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=perf_event permissive=1 ÿÿÿÿ: renamed from sit0 (while UP) netlink: 4 bytes leftover after parsing attributes in process `syz-executor.2'. A link change request failed with some changes committed already. Interface ÿÿÿÿ may have been left with an inconsistent configuration, please check. No source specified netlink: 4 bytes leftover after parsing attributes in process `syz-executor.2'. No source specified A link change request failed with some changes committed already. Interface ÿÿÿÿ may have been left with an inconsistent configuration, please check. netlink: 4 bytes leftover after parsing attributes in process `syz-executor.2'. EXT4-fs (sda): re-mounted 7b5d9a40-9011-49ec-8035-27953f97a4d8. A link change request failed with some changes committed already. Interface ÿÿÿÿ may have been left with an inconsistent configuration, please check. EXT4-fs (sda): re-mounted 7b5d9a40-9011-49ec-8035-27953f97a4d8. netlink: 4 bytes leftover after parsing attributes in process `syz-executor.2'. A link change request failed with some changes committed already. Interface ÿÿÿÿ may have been left with an inconsistent configuration, please check. EXT4-fs (sda): re-mounted 7b5d9a40-9011-49ec-8035-27953f97a4d8. EXT4-fs (sda): re-mounted 7b5d9a40-9011-49ec-8035-27953f97a4d8. EXT4-fs (sda): re-mounted 7b5d9a40-9011-49ec-8035-27953f97a4d8. EXT4-fs (sda): re-mounted 7b5d9a40-9011-49ec-8035-27953f97a4d8. EXT4-fs (sda): re-mounted 7b5d9a40-9011-49ec-8035-27953f97a4d8. EXT4-fs (sda): re-mounted 7b5d9a40-9011-49ec-8035-27953f97a4d8. serio: Serial port ptm0 EXT4-fs (sda): re-mounted 7b5d9a40-9011-49ec-8035-27953f97a4d8. serio: Serial port ptm0 EXT4-fs (sda): re-mounted 7b5d9a40-9011-49ec-8035-27953f97a4d8. serio: Serial port ptm0 audit: type=1400 audit(1768296481.158:11): avc: denied { read } for pid=4619 comm="syz-executor.5" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=perf_event permissive=1 serio: Serial port ptm0 syz-executor.5 (4654) used greatest stack depth: 24000 bytes left syz-executor.2 uses obsolete (PF_INET,SOCK_PACKET) serio: Serial port ptm0 set_capacity_and_notify: 9 callbacks suppressed loop3: detected capacity change from 0 to 6 FAT-fs (loop3): Directory bread(block 6) failed FAT-fs (loop3): Directory bread(block 6) failed FAT-fs (loop3): Directory bread(block 6) failed loop3: detected capacity change from 0 to 6 FAT-fs (loop3): Directory bread(block 6) failed FAT-fs (loop3): Directory bread(block 6) failed FAT-fs (loop3): Directory bread(block 6) failed loop3: detected capacity change from 0 to 6 FAT-fs (loop3): Directory bread(block 6) failed FAT-fs (loop3): Directory bread(block 6) failed FAT-fs (loop3): Directory bread(block 6) failed loop3: detected capacity change from 0 to 6 FAT-fs (loop3): Directory bread(block 6) failed FAT-fs (loop3): Directory bread(block 6) failed FAT-fs (loop3): Directory bread(block 6) failed random: crng reseeded on system resumption random: crng reseeded on system resumption random: crng reseeded on system resumption random: crng reseeded on system resumption random: crng reseeded on system resumption UDPLite: UDP-Lite is deprecated and scheduled to be removed in 2025, please contact the netdev mailing list sr 1:0:0:0: [sr0] tag#0 unaligned transfer I/O error, dev sr0, sector 0 op 0x1:(WRITE) flags 0x800800 phys_seg 3 prio class 2 Buffer I/O error on dev sr0, logical block 0, lost async page write Buffer I/O error on dev sr0, logical block 1, lost async page write Buffer I/O error on dev sr0, logical block 2, lost async page write program syz-executor.7 is using a deprecated SCSI ioctl, please convert it to SG_IO program syz-executor.7 is using a deprecated SCSI ioctl, please convert it to SG_IO audit: type=1326 audit(1768296483.583:12): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=4902 comm="syz-executor.2" exe="/syz-executor.2" sig=0 arch=c000003e syscall=202 compat=0 ip=0x7fb7f304ab19 code=0x7ffc0000 audit: type=1326 audit(1768296483.584:13): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=4902 comm="syz-executor.2" exe="/syz-executor.2" sig=0 arch=c000003e syscall=83 compat=0 ip=0x7fb7f3049c27 code=0x7ffc0000 audit: type=1326 audit(1768296483.584:14): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=4902 comm="syz-executor.2" exe="/syz-executor.2" sig=0 arch=c000003e syscall=165 compat=0 ip=0x7fb7f304c04a code=0x7ffc0000 audit: type=1326 audit(1768296483.589:15): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=4902 comm="syz-executor.2" exe="/syz-executor.2" sig=0 arch=c000003e syscall=257 compat=0 ip=0x7fb7f2ffda04 code=0x7ffc0000 audit: type=1326 audit(1768296483.591:16): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=4902 comm="syz-executor.2" exe="/syz-executor.2" sig=0 arch=c000003e syscall=202 compat=0 ip=0x7fb7f304ab19 code=0x7ffc0000 audit: type=1326 audit(1768296483.593:17): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=4902 comm="syz-executor.2" exe="/syz-executor.2" sig=0 arch=c000003e syscall=266 compat=0 ip=0x7fb7f304ab19 code=0x7ffc0000 audit: type=1326 audit(1768296483.593:18): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=4902 comm="syz-executor.2" exe="/syz-executor.2" sig=0 arch=c000003e syscall=202 compat=0 ip=0x7fb7f304ab19 code=0x7ffc0000 audit: type=1326 audit(1768296483.594:19): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=4902 comm="syz-executor.2" exe="/syz-executor.2" sig=0 arch=c000003e syscall=317 compat=0 ip=0x7fb7f304ab19 code=0x7ffc0000 mac80211_hwsim: wmediumd released netlink socket, switching to perfect channel medium mac80211_hwsim: wmediumd released netlink socket, switching to perfect channel medium mac80211_hwsim: wmediumd released netlink socket, switching to perfect channel medium mac80211_hwsim: wmediumd released netlink socket, switching to perfect channel medium mac80211_hwsim: wmediumd released netlink socket, switching to perfect channel medium mac80211_hwsim: wmediumd released netlink socket, switching to perfect channel medium mac80211_hwsim: wmediumd released netlink socket, switching to perfect channel medium mac80211_hwsim: wmediumd released netlink socket, switching to perfect channel medium netlink: 4376 bytes leftover after parsing attributes in process `syz-executor.6'. netlink: 4376 bytes leftover after parsing attributes in process `syz-executor.6'. mac80211_hwsim: wmediumd released netlink socket, switching to perfect channel medium netlink: 4376 bytes leftover after parsing attributes in process `syz-executor.6'. mac80211_hwsim: wmediumd released netlink socket, switching to perfect channel medium mac80211_hwsim: wmediumd released netlink socket, switching to perfect channel medium mac80211_hwsim: wmediumd released netlink socket, switching to perfect channel medium netlink: 4376 bytes leftover after parsing attributes in process `syz-executor.6'. netlink: 4376 bytes leftover after parsing attributes in process `syz-executor.6'.