===================================== WARNING: bad unlock balance detected! 6.19.0-rc5-next-20260116 #1 Not tainted ------------------------------------- syz-executor.6/4225 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.6/4225: #0: ffff88800f8303f8 (sb_writers#3){.+.+}-{0:0}, at: filename_create+0xf7/0x400 #1: ffff88801b3a59a8 (&type->i_mutex_dir_key#3/1){+.+.}-{4:4}, at: filename_create+0x1b1/0x400 #2: ffff88800f834950 (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: 4225 Comm: syz-executor.6 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_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: 0033:0x7f78a5330427 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:00007fff9130cd78 EFLAGS: 00000202 ORIG_RAX: 0000000000000058 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f78a5330427 RDX: ffffffffffffffbc RSI: 00007f78a538b00e RDI: 00007f78a538a1dd RBP: 0000000000000000 R08: 0000000000000000 R09: 00007fff9130c7f0 R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000001 R13: 0000000000000000 R14: 0000000000000001 R15: 00007fff9130ce40 ------------[ cut here ]------------ WARNING: kernel/rcu/tree_plugin.h:443 at __rcu_read_unlock+0x25f/0x5c0, CPU#0: syz-executor.6/4225 Modules linked in: CPU: 0 UID: 0 PID: 4225 Comm: syz-executor.6 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:ffff88801d9579a0 EFLAGS: 00010286 RAX: 00000000ffffffff RBX: ffff88801efeb700 RCX: ffffffff815660f7 RDX: 0000000000000000 RSI: ffffffff81566100 RDI: ffff88801efebafc RBP: ffff88801efeb700 R08: 0000000000000000 R09: fffffbfff0ba7040 R10: 0000000000000000 R11: 0000000000000001 R12: ffff88801efeb700 R13: 0000000000000001 R14: ffffffff85c0e140 R15: ffff888049ab9fb0 FS: 0000555593dd2400(0000) GS:ffff8880e5342000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f78a53b0546 CR3: 000000000f6e0000 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: 0033:0x7f78a5330427 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:00007fff9130cd78 EFLAGS: 00000202 ORIG_RAX: 0000000000000058 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f78a5330427 RDX: ffffffffffffffbc RSI: 00007f78a538b00e RDI: 00007f78a538a1dd RBP: 0000000000000000 R08: 0000000000000000 R09: 00007fff9130c7f0 R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000001 R13: 0000000000000000 R14: 0000000000000001 R15: 00007fff9130ce40 irq event stamp: 749 hardirqs last enabled at (749): [] _raw_spin_unlock_irqrestore+0x2c/0x50 hardirqs last disabled at (748): [] _raw_spin_lock_irqsave+0x53/0x60 softirqs last enabled at (744): [] kernel_fpu_end+0x59/0x70 softirqs last disabled at (742): [] kernel_fpu_begin_mask+0x1bb/0x300 ---[ end trace 0000000000000000 ]--- faux_driver regulatory: Direct firmware load for regulatory.db failed with error -2 random: crng reseeded on system resumption tmpfs: Unknown parameter '~J1Mĝ{GH hG;!7[T?fb' tmpfs: Unknown parameter '~J1Mĝ{GH hG;!7[T?fb' tmpfs: Unknown parameter '~J1Mĝ{GH hG;!7[T?fb' tmpfs: Unknown parameter '~J1Mĝ{GH hG;!7[T?fb' tmpfs: Unknown parameter '~J1Mĝ{GH hG;!7[T?fb' tmpfs: Unknown parameter '~J1Mĝ{GH hG;!7[T?fb' tmpfs: Unknown parameter '~J1Mĝ{GH hG;!7[T?fb' tmpfs: Unknown parameter '~J1Mĝ{GH hG;!7[T?fb' tmpfs: Unknown parameter '~J1Mĝ{GH hG;!7[T?fb' tmpfs: Unknown parameter '~J1Mĝ{GH hG;!7[T?fb' sit: Src spoofed 0.0.0.0/2002:0:240::800 -> 0.0.0.0/:: sit: Src spoofed 0.0.0.0/2002:0:240::800 -> 0.0.0.0/:: tmpfs: Unknown parameter '~J1Mĝ{GH hG;!7[T?fb' syz-executor.2 (4368): /proc/4365/oom_adj is deprecated, please use /proc/4365/oom_score_adj instead. loop3: detected capacity change from 0 to 256 ISO 9660 Extensions: Microsoft Joliet Level 0 ISO 9660 Extensions: loop4: detected capacity change from 0 to 6 FAT-fs (loop4): Directory bread(block 6) failed FAT-fs (loop4): Directory bread(block 6) failed FAT-fs (loop4): Directory bread(block 6) failed ======================================================= 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. ======================================================= mac80211_hwsim hwsim14 wlan0: entered allmulticast mode audit: type=1400 audit(1768577606.309:11): avc: denied { tracepoint } for pid=4447 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 mac80211_hwsim hwsim14 wlan0: left allmulticast mode mac80211_hwsim hwsim17 wlan1: entered promiscuous mode mac80211_hwsim hwsim17 wlan1: left promiscuous mode mac80211_hwsim hwsim17 wlan1: entered promiscuous mode mac80211_hwsim hwsim17 wlan1: left promiscuous mode EXT4-fs: test_dummy_encryption option not supported EXT4-fs: test_dummy_encryption option not supported Bluetooth: hci6: Controller not accepting commands anymore: ncmd = 0 Bluetooth: hci6: Injecting HCI hardware error event Bluetooth: hci6: hardware error 0x00 Bluetooth: hci5: Controller not accepting commands anymore: ncmd = 0 Bluetooth: hci5: Injecting HCI hardware error event Bluetooth: hci5: hardware error 0x00 Bluetooth: hci4: Controller not accepting commands anymore: ncmd = 0 Bluetooth: hci4: Injecting HCI hardware error event Bluetooth: hci4: hardware error 0x00 loop3: detected capacity change from 0 to 512 EXT4-fs (loop3): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback. ext4 filesystem being mounted at /syzkaller-testdir641897481/syzkaller.dxsIf5/42/file0 supports timestamps until 2038-01-19 (0x7fffffff) EXT4-fs (loop3): unmounting filesystem 00000000-0000-0000-0000-000000000000. Bluetooth: hci6: Opcode 0x0c03 failed: -110 audit: type=1326 audit(1768577610.711:12): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=4680 comm="syz-executor.1" exe="/syz-executor.1" sig=0 arch=c000003e syscall=202 compat=0 ip=0x7f9e4016fb19 code=0x7ffc0000 audit: type=1326 audit(1768577610.711:13): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=4680 comm="syz-executor.1" exe="/syz-executor.1" sig=0 arch=c000003e syscall=202 compat=0 ip=0x7f9e4016fb19 code=0x7ffc0000 audit: type=1326 audit(1768577610.713:14): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=4680 comm="syz-executor.1" exe="/syz-executor.1" sig=0 arch=c000003e syscall=329 compat=0 ip=0x7f9e4016fb19 code=0x7ffc0000 audit: type=1326 audit(1768577610.713:15): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=4680 comm="syz-executor.1" exe="/syz-executor.1" sig=0 arch=c000003e syscall=202 compat=0 ip=0x7f9e4016fb19 code=0x7ffc0000 audit: type=1326 audit(1768577610.719:16): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=4680 comm="syz-executor.1" exe="/syz-executor.1" sig=0 arch=c000003e syscall=298 compat=0 ip=0x7f9e4016fb19 code=0x7ffc0000 Bluetooth: hci5: Opcode 0x0c03 failed: -110 audit: type=1326 audit(1768577610.719:17): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=4680 comm="syz-executor.1" exe="/syz-executor.1" sig=0 arch=c000003e syscall=202 compat=0 ip=0x7f9e4016fb19 code=0x7ffc0000 audit: type=1326 audit(1768577610.719:18): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=4680 comm="syz-executor.1" exe="/syz-executor.1" sig=0 arch=c000003e syscall=202 compat=0 ip=0x7f9e4016fb19 code=0x7ffc0000 audit: type=1326 audit(1768577610.729:19): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=4680 comm="syz-executor.1" exe="/syz-executor.1" sig=0 arch=c000003e syscall=317 compat=0 ip=0x7f9e4016fb19 code=0x7ffc0000 audit: type=1326 audit(1768577610.729:20): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=4680 comm="syz-executor.1" exe="/syz-executor.1" sig=0 arch=c000003e syscall=202 compat=0 ip=0x7f9e4016fb19 code=0x7ffc0000 Bluetooth: hci4: Opcode 0x0c03 failed: -110 SELinux: unrecognized netlink message: protocol=0 nlmsg_type=0 sclass=netlink_route_socket pid=4718 comm=syz-executor.3 SELinux: unrecognized netlink message: protocol=0 nlmsg_type=0 sclass=netlink_route_socket pid=4718 comm=syz-executor.3 audit: type=1400 audit(1768577611.437:21): avc: denied { module_load } for pid=4723 comm="syz-executor.6" path=2F6D656D66643A2F70726F632F7468726561642D73656C662F617474722F6673637265617465202864656C6574656429 dev="tmpfs" ino=1032 scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:object_r:tmpfs_t:s0 tclass=system permissive=1 sr 1:0:0:0: [sr0] tag#0 unaligned transfer I/O error, dev sr0, sector 0 op 0x1:(WRITE) flags 0x8800 phys_seg 1 prio class 2 sr 1:0:0:0: [sr0] tag#0 unaligned transfer I/O error, dev sr0, sector 0 op 0x1:(WRITE) flags 0x8800 phys_seg 1 prio class 2 audit: type=1400 audit(1768577613.427:22): avc: denied { block_suspend } for pid=4868 comm="syz-executor.2" capability=36 scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=capability2 permissive=1 tc_dump_action: action bad kind