===================================== WARNING: bad unlock balance detected! 6.19.0-rc5-next-20260115 #1 Not tainted ------------------------------------- syz-executor.1/5712 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.1/5712: #0: ffff88800f88a3f8 (sb_writers#3){.+.+}-{0:0}, at: filename_create+0xf7/0x400 #1: ffff88801f584698 (&type->i_mutex_dir_key#3/1){+.+.}-{4:4}, at: filename_create+0x1b1/0x400 #2: ffff88800f88e950 (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: 5712 Comm: syz-executor.1 Not tainted 6.19.0-rc5-next-20260115 #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 filename_symlinkat+0x158/0x440 __x64_sys_symlink+0x82/0x110 do_syscall_64+0xbf/0x420 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fac645d6427 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:00007ffcdd763668 EFLAGS: 00000202 ORIG_RAX: 0000000000000058 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fac645d6427 RDX: 00007ffcdd763747 RSI: 00007fac64631019 RDI: 00007ffcdd763730 RBP: 0000000000000000 R08: 0000000000000000 R09: 00007ffcdd763500 R10: 00007ffcdd7633b7 R11: 0000000000000202 R12: 0000000000000001 R13: 0000000000000000 R14: 0000000000000001 R15: 00007ffcdd763730 ------------[ cut here ]------------ WARNING: kernel/rcu/tree_plugin.h:443 at __rcu_read_unlock+0x25f/0x5c0, CPU#1: syz-executor.1/5712 Modules linked in: CPU: 1 UID: 0 PID: 5712 Comm: syz-executor.1 Not tainted 6.19.0-rc5-next-20260115 #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:ffff888051ad79a0 EFLAGS: 00010286 RAX: 00000000ffffffff RBX: ffff888051a65280 RCX: ffffffff815660f7 RDX: 0000000000000000 RSI: ffffffff81566100 RDI: ffff888051a6567c RBP: ffff888051a65280 R08: 0000000000000000 R09: fffffbfff0ba7040 R10: 0000000000000000 R11: 0000000000000001 R12: ffff888051a65280 R13: 0000000000000001 R14: ffffffff85c0d330 R15: ffff88801f41c5d0 FS: 000055557ef59400(0000) GS:ffff8880e5442000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fac64656541 CR3: 00000000491c3000 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 filename_symlinkat+0x158/0x440 __x64_sys_symlink+0x82/0x110 do_syscall_64+0xbf/0x420 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fac645d6427 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:00007ffcdd763668 EFLAGS: 00000202 ORIG_RAX: 0000000000000058 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fac645d6427 RDX: 00007ffcdd763747 RSI: 00007fac64631019 RDI: 00007ffcdd763730 RBP: 0000000000000000 R08: 0000000000000000 R09: 00007ffcdd763500 R10: 00007ffcdd7633b7 R11: 0000000000000202 R12: 0000000000000001 R13: 0000000000000000 R14: 0000000000000001 R15: 00007ffcdd763730 irq event stamp: 193 hardirqs last enabled at (193): [] _raw_spin_unlock_irqrestore+0x2c/0x50 hardirqs last disabled at (192): [] _raw_spin_lock_irqsave+0x53/0x60 softirqs last enabled at (188): [] kernel_fpu_end+0x59/0x70 softirqs last disabled at (186): [] kernel_fpu_begin_mask+0x1bb/0x300 ---[ end trace 0000000000000000 ]--- random: crng reseeded on system resumption random: crng reseeded on system resumption program syz-executor.0 is using a deprecated SCSI ioctl, please convert it to SG_IO ata1.00: invalid multi_count 1 ignored program syz-executor.0 is using a deprecated SCSI ioctl, please convert it to SG_IO ata1.00: invalid multi_count 1 ignored kauditd_printk_skb: 1 callbacks suppressed audit: type=1400 audit(1768469162.686:27): avc: denied { read } for pid=5936 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 EXT4-fs warning (device sda): ext4_resize_begin:81: There are errors in the filesystem, so online resizing is not allowed EXT4-fs warning (device sda): ext4_resize_begin:81: There are errors in the filesystem, so online resizing is not allowed EXT4-fs warning (device sda): ext4_resize_begin:81: There are errors in the filesystem, so online resizing is not allowed EXT4-fs warning (device sda): ext4_resize_begin:81: There are errors in the filesystem, so online resizing is not allowed EXT4-fs warning (device sda): ext4_resize_begin:81: There are errors in the filesystem, so online resizing is not allowed EXT4-fs warning (device sda): ext4_resize_begin:81: There are errors in the filesystem, so online resizing is not allowed EXT4-fs warning (device sda): ext4_resize_begin:81: There are errors in the filesystem, so online resizing is not allowed EXT4-fs warning (device sda): ext4_resize_begin:81: There are errors in the filesystem, so online resizing is not allowed EXT4-fs warning (device sda): ext4_resize_begin:81: There are errors in the filesystem, so online resizing is not allowed EXT4-fs warning (device sda): ext4_resize_begin:81: There are errors in the filesystem, so online resizing is not allowed ======================================================= 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. ======================================================= loop0: detected capacity change from 0 to 2097151 sr 1:0:0:0: [sr0] tag#0 FAILED Result: hostbyte=DID_OK driverbyte=DRIVER_OK cmd_age=0s sr 1:0:0:0: [sr0] tag#0 Sense Key : Not Ready [current] sr 1:0:0:0: [sr0] tag#0 Add. Sense: Medium not present sr 1:0:0:0: [sr0] tag#0 CDB: Read(10) 28 00 00 07 ff c0 00 00 02 00 I/O error, dev sr0, sector 2096896 op 0x0:(READ) flags 0x800000 phys_seg 1 prio class 2 I/O error, dev loop0, sector 2096896 op 0x0:(READ) flags 0x880700 phys_seg 1 prio class 2 sr 1:0:0:0: [sr0] tag#0 FAILED Result: hostbyte=DID_OK driverbyte=DRIVER_OK cmd_age=0s sr 1:0:0:0: [sr0] tag#0 Sense Key : Not Ready [current] sr 1:0:0:0: [sr0] tag#0 Add. Sense: Medium not present sr 1:0:0:0: [sr0] tag#0 CDB: Read(10) 28 00 00 07 ff c0 00 00 02 00 I/O error, dev sr0, sector 2096896 op 0x0:(READ) flags 0x800000 phys_seg 8 prio class 2 I/O error, dev loop0, sector 2096896 op 0x0:(READ) flags 0x800000 phys_seg 1 prio class 2 Buffer I/O error on dev loop0, logical block 2096896, async page read I/O error, dev loop0, sector 2096897 op 0x0:(READ) flags 0x800000 phys_seg 1 prio class 2 Buffer I/O error on dev loop0, logical block 2096897, async page read I/O error, dev loop0, sector 2096898 op 0x0:(READ) flags 0x800000 phys_seg 1 prio class 2 Buffer I/O error on dev loop0, logical block 2096898, async page read I/O error, dev loop0, sector 2096899 op 0x0:(READ) flags 0x800000 phys_seg 1 prio class 2 Buffer I/O error on dev loop0, logical block 2096899, async page read I/O error, dev loop0, sector 2096900 op 0x0:(READ) flags 0x800000 phys_seg 1 prio class 2 Buffer I/O error on dev loop0, logical block 2096900, async page read I/O error, dev loop0, sector 2096901 op 0x0:(READ) flags 0x800000 phys_seg 1 prio class 2 Buffer I/O error on dev loop0, logical block 2096901, async page read I/O error, dev loop0, sector 2096902 op 0x0:(READ) flags 0x800000 phys_seg 1 prio class 2 Buffer I/O error on dev loop0, logical block 2096902, async page read Buffer I/O error on dev loop0, logical block 2096903, async page read cgroup: Bad value for 'name' cgroup: Bad value for 'name' loop0: detected capacity change from 0 to 2097151 loop4: detected capacity change from 0 to 512 cgroup: Bad value for 'name' EXT4-fs (loop4): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: none. EXT4-fs (loop4): unmounting filesystem 00000000-0000-0000-0000-000000000000. cgroup: Bad value for 'name' cgroup: Bad value for 'name' loop4: detected capacity change from 0 to 512 EXT4-fs (loop4): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: none. EXT4-fs (loop4): unmounting filesystem 00000000-0000-0000-0000-000000000000. loop4: detected capacity change from 0 to 512 EXT4-fs (loop4): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: none. EXT4-fs (loop4): unmounting filesystem 00000000-0000-0000-0000-000000000000. loop4: detected capacity change from 0 to 512 ICMPv6: NA: 08:bd:00:e6:d6:48 advertised our address fe80::aa on syz_tun! EXT4-fs (loop4): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: none. ICMPv6: NA: 08:bd:00:e6:d6:48 advertised our address fe80::aa on syz_tun! EXT4-fs (loop4): unmounting filesystem 00000000-0000-0000-0000-000000000000. ICMPv6: NA: 08:bd:00:e6:d6:48 advertised our address fe80::aa on syz_tun! ICMPv6: NA: 08:bd:00:e6:d6:48 advertised our address fe80::aa on syz_tun! audit: type=1326 audit(1768469167.578:28): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=6508 comm="syz-executor.5" exe="/syz-executor.5" sig=31 arch=c000003e syscall=202 compat=0 ip=0x7f2ca76efb19 code=0x0 ICMPv6: NA: 08:bd:00:e6:d6:48 advertised our address fe80::aa on syz_tun! audit: type=1326 audit(1768469168.392:29): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=6508 comm="syz-executor.5" exe="/syz-executor.5" sig=31 arch=c000003e syscall=202 compat=0 ip=0x7f2ca76efb19 code=0x0 audit: type=1400 audit(1768469168.547:30): avc: denied { watch_reads } for pid=6547 comm="syz-executor.7" path="/syzkaller-testdir236200449/syzkaller.tdnHaw/106/file0" dev="hugetlbfs" ino=12930 scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:object_r:hugetlbfs_t:s0 tclass=dir permissive=1 audit: type=1400 audit(1768469168.781:31): avc: denied { watch_reads } for pid=6574 comm="syz-executor.1" path="/syzkaller-testdir783220394/syzkaller.V5IYvg/114/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