===================================== WARNING: bad unlock balance detected! 6.19.0-rc5-next-20260114 #1 Not tainted ------------------------------------- syz-executor.1/4291 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.1/4291: #0: ffff88800f7623f8 (sb_writers#3){.+.+}-{0:0}, at: filename_create+0xf7/0x400 #1: ffff8880492ac698 (&type->i_mutex_dir_key#3/1){+.+.}-{4:4}, at: filename_create+0x1b1/0x400 #2: ffff88800f766950 (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: 4291 Comm: syz-executor.1 Not tainted 6.19.0-rc5-next-20260114 #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+0x623/0xb40 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: 0033:0x7f98e6dcf427 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:00007ffd8f18ad08 EFLAGS: 00000206 ORIG_RAX: 0000000000000058 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f98e6dcf427 RDX: ffffffffffffffbc RSI: 00007f98e6e2a00e RDI: 00007f98e6e291dd RBP: 0000000000000000 R08: 0000000000000000 R09: 00007ffd8f18a780 R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000001 R13: 0000000000000000 R14: 0000000000000001 R15: 00007ffd8f18add0 ------------[ cut here ]------------ WARNING: kernel/rcu/tree_plugin.h:443 at __rcu_read_unlock+0x25f/0x5c0, CPU#1: syz-executor.1/4291 Modules linked in: CPU: 1 UID: 0 PID: 4291 Comm: syz-executor.1 Not tainted 6.19.0-rc5-next-20260114 #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 16 c0 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 24 74 03 e8 bc 5c 56 00 e9 RSP: 0018:ffff888048e4f9a0 EFLAGS: 00010286 RAX: 00000000ffffffff RBX: ffff88801c10d280 RCX: ffffffff81565a27 RDX: 0000000000000000 RSI: ffffffff81565a30 RDI: ffff88801c10d67c RBP: ffff88801c10d280 R08: 0000000000000000 R09: fffffbfff0ba6ffc R10: 0000000000000000 R11: 0000000000000001 R12: ffff88801c10d280 R13: 0000000000000001 R14: ffffffff85c0fbd0 R15: ffff8880492ab2c0 FS: 000055557faec400(0000) GS:ffff8880e5443000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fff894befb8 CR3: 0000000018538000 CR4: 0000000000350ef0 Call Trace: __wait_on_freeing_inode+0x10f/0x350 insert_inode_locked+0x25f/0x890 __ext4_new_inode+0x223d/0x4cd0 ext4_symlink+0x623/0xb40 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: 0033:0x7f98e6dcf427 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:00007ffd8f18ad08 EFLAGS: 00000206 ORIG_RAX: 0000000000000058 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f98e6dcf427 RDX: ffffffffffffffbc RSI: 00007f98e6e2a00e RDI: 00007f98e6e291dd RBP: 0000000000000000 R08: 0000000000000000 R09: 00007ffd8f18a780 R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000001 R13: 0000000000000000 R14: 0000000000000001 R15: 00007ffd8f18add0 irq event stamp: 635 hardirqs last enabled at (635): [] _raw_spin_unlock_irqrestore+0x2c/0x50 hardirqs last disabled at (634): [] _raw_spin_lock_irqsave+0x53/0x60 softirqs last enabled at (630): [] kernel_fpu_end+0x59/0x70 softirqs last disabled at (628): [] kernel_fpu_begin_mask+0x1bb/0x300 ---[ end trace 0000000000000000 ]--- ======================================================= WARNING: The mand mount option has been deprecated and and is ignored by this kernel. Remove the mand option from the mount to silence this warning. ======================================================= 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. netlink: 12 bytes leftover after parsing attributes in process `syz-executor.4'. netlink: 12 bytes leftover after parsing attributes in process `syz-executor.4'. EXT4-fs (sda): re-mounted 7b5d9a40-9011-49ec-8035-27953f97a4d8. netlink: 4 bytes leftover after parsing attributes in process `syz-executor.1'. netlink: 4 bytes leftover after parsing attributes in process `syz-executor.1'. netlink: 12 bytes leftover after parsing attributes in process `syz-executor.5'. netlink: 12 bytes leftover after parsing attributes in process `syz-executor.4'. netlink: 12 bytes leftover after parsing attributes in process `syz-executor.5'. netlink: 12 bytes leftover after parsing attributes in process `syz-executor.4'. netlink: 12 bytes leftover after parsing attributes in process `syz-executor.5'. netlink: 52 bytes leftover after parsing attributes in process `syz-executor.1'. audit: type=1400 audit(1768383509.375:19): avc: denied { tracepoint } for pid=4630 comm="syz-executor.6" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=perf_event permissive=1 SELinux: Context ” is not valid (left unmapped). loop3: detected capacity change from 0 to 5 EXT4-fs (loop3): bad geometry: block count 128 exceeds size of device (1 blocks) loop3: detected capacity change from 0 to 5 EXT4-fs (loop3): bad geometry: block count 128 exceeds size of device (1 blocks) netlink: 'syz-executor.7': attribute type 29 has an invalid length. netlink: 'syz-executor.7': attribute type 29 has an invalid length. loop3: detected capacity change from 0 to 5 EXT4-fs (loop3): bad geometry: block count 128 exceeds size of device (1 blocks) netlink: 'syz-executor.7': attribute type 29 has an invalid length. loop3: detected capacity change from 0 to 5 netlink: 'syz-executor.7': attribute type 29 has an invalid length. EXT4-fs (loop3): bad geometry: block count 128 exceeds size of device (1 blocks) loop3: detected capacity change from 0 to 5 EXT4-fs (loop3): bad geometry: block count 128 exceeds size of device (1 blocks) netlink: 'syz-executor.7': attribute type 29 has an invalid length. tmpfs: Bad value for 'mpol' tmpfs: Bad value for 'mpol' tmpfs: Bad value for 'mpol' audit: type=1400 audit(1768383511.196:20): avc: denied { execheap } for pid=4779 comm="syz-executor.7" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=process permissive=1 tmpfs: Bad value for 'mpol' 9pnet_virtio: no channels available for device ./file0/file0 9pnet_virtio: no channels available for device ./file0/file0 9pnet_virtio: no channels available for device ./file0/file0 9pnet_virtio: no channels available for device ./file0/file0 ÿÿÿÿ: renamed from sit0 (while UP) 9pnet_virtio: no channels available for device ./file0/file0 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 mac80211_hwsim: wmediumd released netlink socket, switching to perfect channel medium mac80211_hwsim: wmediumd released netlink socket, switching to perfect channel medium loop6: detected capacity change from 0 to 512 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 EXT4-fs (loop6): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: none. program syz-executor.4 is using a deprecated SCSI ioctl, please convert it to SG_IO EXT4-fs (loop6): unmounting filesystem 00000000-0000-0000-0000-000000000000. program syz-executor.1 is using a deprecated SCSI ioctl, please convert it to SG_IO 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 program syz-executor.4 is using a deprecated SCSI ioctl, please convert it to SG_IO program syz-executor.1 is using a deprecated SCSI ioctl, please convert it to SG_IO syz-executor.1 (4967) used greatest stack depth: 24248 bytes left program syz-executor.4 is using a deprecated SCSI ioctl, please convert it to SG_IO program syz-executor.1 is using a deprecated SCSI ioctl, please convert it to SG_IO EXT4-fs (sda): re-mounted 7b5d9a40-9011-49ec-8035-27953f97a4d8. EXT4-fs (sda): re-mounted 7b5d9a40-9011-49ec-8035-27953f97a4d8. audit: type=1400 audit(1768383514.091:21): avc: denied { watch_reads } for pid=5030 comm="syz-executor.5" path="/syzkaller-testdir271980304/syzkaller.9XLAbM/58/file0" dev="sda" ino=16021 scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:object_r:unlabeled_t:s0 tclass=dir permissive=1 faux_driver regulatory: Direct firmware load for regulatory.db failed with error -2 random: crng reseeded on system resumption faux_driver regulatory: Direct firmware load for regulatory.db failed with error -2 random: crng reseeded on system resumption syz-executor.7 (5049) used greatest stack depth: 22896 bytes left faux_driver regulatory: Direct firmware load for regulatory.db failed with error -2 random: crng reseeded on system resumption faux_driver regulatory: Direct firmware load for regulatory.db failed with error -2 random: crng reseeded on system resumption faux_driver regulatory: Direct firmware load for regulatory.db failed with error -2 faux_driver regulatory: Direct firmware load for regulatory.db failed with error -2 random: crng reseeded on system resumption faux_driver regulatory: Direct firmware load for regulatory.db failed with error -2