===================================== WARNING: bad unlock balance detected! 6.19.0-rc5-next-20260116 #1 Not tainted ------------------------------------- syz-executor.1/5254 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.1/5254: #0: ffff88800f5e83f8 (sb_writers#3){.+.+}-{0:0}, at: filename_create+0xf7/0x400 #1: ffff88804a662078 (&type->i_mutex_dir_key#3/1){+.+.}-{4:4}, at: filename_create+0x1b1/0x400 #2: ffff88800f5ec950 (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: 5254 Comm: syz-executor.1 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: 0033:0x7fe16695cc27 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:00007fff14e56ae8 EFLAGS: 00000206 ORIG_RAX: 0000000000000053 RAX: ffffffffffffffda RBX: 00007fff14e56b70 RCX: 00007fe16695cc27 RDX: 0000000000000000 RSI: 00000000000001ff RDI: 00007fff14e56b70 RBP: 00007fff14e56b4c R08: 0000000000000000 R09: 0000000000000004 R10: 00007fff14e56886 R11: 0000000000000206 R12: 0000000000000032 R13: 0000000000031315 R14: 0000000000000002 R15: 00007fff14e56bb0 ------------[ cut here ]------------ WARNING: kernel/rcu/tree_plugin.h:443 at __rcu_read_unlock+0x25f/0x5c0, CPU#0: syz-executor.1/5254 Modules linked in: CPU: 0 UID: 0 PID: 5254 Comm: syz-executor.1 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:ffff88802c1ef9e0 EFLAGS: 00010286 RAX: 00000000ffffffff RBX: ffff888049451b80 RCX: ffffffff815660f7 RDX: 0000000000000000 RSI: ffffffff81566100 RDI: ffff888049451f7c RBP: ffff888049451b80 R08: 0000000000000000 R09: fffffbfff0ba7040 R10: 0000000000000000 R11: 0000000000000001 R12: ffff888049451b80 R13: 0000000000000001 R14: ffffffff85c0fb80 R15: ffff88804b14e268 FS: 000055556772d400(0000) GS:ffff8880e5342000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ffcce5e1fc8 CR3: 000000000cbff000 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: 0033:0x7fe16695cc27 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:00007fff14e56ae8 EFLAGS: 00000206 ORIG_RAX: 0000000000000053 RAX: ffffffffffffffda RBX: 00007fff14e56b70 RCX: 00007fe16695cc27 RDX: 0000000000000000 RSI: 00000000000001ff RDI: 00007fff14e56b70 RBP: 00007fff14e56b4c R08: 0000000000000000 R09: 0000000000000004 R10: 00007fff14e56886 R11: 0000000000000206 R12: 0000000000000032 R13: 0000000000031315 R14: 0000000000000002 R15: 00007fff14e56bb0 irq event stamp: 415321 hardirqs last enabled at (415321): [] irqentry_exit+0x17b/0x650 hardirqs last disabled at (415320): [] common_interrupt+0x1d/0xd0 softirqs last enabled at (415314): [] kernel_fpu_end+0x59/0x70 softirqs last disabled at (415312): [] kernel_fpu_begin_mask+0x1bb/0x300 ---[ end trace 0000000000000000 ]--- UDPLite: UDP-Lite is deprecated and scheduled to be removed in 2025, please contact the netdev mailing list netlink: 12 bytes leftover after parsing attributes in process `syz-executor.0'. netlink: 12 bytes leftover after parsing attributes in process `syz-executor.0'. kernel read not supported for file /vga_arbiter (pid: 3982 comm: kworker/1:4) SELinux: security_context_str_to_sid (sysadm_u) failed with errno=-22 SELinux: security_context_str_to_sid (sysadm_u) failed with errno=-22 loop2: detected capacity change from 0 to 512 EXT4-fs (loop2): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: none. EXT4-fs (loop2): unmounting filesystem 00000000-0000-0000-0000-000000000000. loop6: detected capacity change from 0 to 264192 loop3: detected capacity change from 0 to 2048 SELinux: Context system_u:object_r: is not valid (left unmapped). EXT4-fs (loop3): ext4_check_descriptors: Checksum for group 0 failed (46507!=0) EXT4-fs (loop3): mounted filesystem 00000000-0000-0000-0000-000000000000 ro without journal. Quota mode: writeback. EXT4-fs (loop3): unmounting filesystem 00000000-0000-0000-0000-000000000000. process 'syz-executor.0' launched './file1' with NULL argv: empty string added loop3: detected capacity change from 0 to 2048 EXT4-fs (loop3): ext4_check_descriptors: Checksum for group 0 failed (46507!=0) EXT4-fs (loop3): mounted filesystem 00000000-0000-0000-0000-000000000000 ro without journal. Quota mode: writeback. EXT4-fs (loop3): unmounting filesystem 00000000-0000-0000-0000-000000000000. loop3: detected capacity change from 0 to 2048 EXT4-fs (loop3): ext4_check_descriptors: Checksum for group 0 failed (46507!=0) EXT4-fs (loop3): mounted filesystem 00000000-0000-0000-0000-000000000000 ro without journal. Quota mode: writeback. EXT4-fs (loop3): unmounting filesystem 00000000-0000-0000-0000-000000000000. loop3: detected capacity change from 0 to 2048 EXT4-fs (loop3): ext4_check_descriptors: Checksum for group 0 failed (46507!=0) EXT4-fs (loop3): mounted filesystem 00000000-0000-0000-0000-000000000000 ro without journal. Quota mode: writeback. EXT4-fs (loop3): unmounting filesystem 00000000-0000-0000-0000-000000000000. cgroup: noprefix used incorrectly cgroup: noprefix used incorrectly netlink: 12 bytes leftover after parsing attributes in process `syz-executor.6'. netlink: 12 bytes leftover after parsing attributes in process `syz-executor.6'. audit: type=1400 audit(1768577380.772:19): avc: denied { block_suspend } for pid=7476 comm="syz-executor.1" capability=36 scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=capability2 permissive=1 Bluetooth: hci4: unexpected event 0x3e length: 431 > 260 Bluetooth: hci4: unexpected subevent 0x0d length: 430 > 260 Bluetooth: hci4: adv larger than maximum supported Bluetooth: hci4: adv larger than maximum supported Bluetooth: hci4: adv larger than maximum supported Bluetooth: hci4: Malformed LE Event: 0x0d Bluetooth: hci4: unexpected event 0x3e length: 431 > 260 Bluetooth: hci4: unexpected subevent 0x0d length: 430 > 260 Bluetooth: hci4: adv larger than maximum supported Bluetooth: hci4: adv larger than maximum supported Bluetooth: hci4: adv larger than maximum supported Bluetooth: hci4: Malformed LE Event: 0x0d Bluetooth: hci4: unexpected event 0x3e length: 431 > 260 Bluetooth: hci4: unexpected subevent 0x0d length: 430 > 260 Bluetooth: hci4: adv larger than maximum supported Bluetooth: hci4: adv larger than maximum supported Bluetooth: hci4: adv larger than maximum supported Bluetooth: hci4: Malformed LE Event: 0x0d loop6: detected capacity change from 0 to 512 EXT4-fs (loop6): corrupt root inode, run e2fsck EXT4-fs (loop6): mount failed loop6: detected capacity change from 0 to 512 EXT4-fs (loop6): corrupt root inode, run e2fsck EXT4-fs (loop6): mount failed loop6: detected capacity change from 0 to 512 Bluetooth: hci4: unexpected event 0x3e length: 431 > 260 Bluetooth: hci4: unexpected subevent 0x0d length: 430 > 260 Bluetooth: hci4: adv larger than maximum supported Bluetooth: hci4: Malformed LE Event: 0x0d EXT4-fs (loop6): corrupt root inode, run e2fsck EXT4-fs (loop6): mount failed loop6: detected capacity change from 0 to 512 EXT4-fs (loop6): corrupt root inode, run e2fsck EXT4-fs (loop6): mount failed loop6: detected capacity change from 0 to 512 EXT4-fs (loop6): corrupt root inode, run e2fsck EXT4-fs (loop6): mount failed 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 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 00 00 00 00 00 08 00 I/O error, dev sr0, sector 0 op 0x0:(READ) flags 0x880700 phys_seg 4 prio class 2 sr 1:0:0:0: [sr0] tag#0 unaligned transfer I/O error, dev sr0, sector 0 op 0x0:(READ) flags 0x800000 phys_seg 1 prio class 2 Buffer I/O error on dev sr0, logical block 0, async page read sr 1:0:0:0: [sr0] tag#0 unaligned transfer I/O error, dev sr0, sector 1 op 0x0:(READ) flags 0x800000 phys_seg 1 prio class 2 Buffer I/O error on dev sr0, logical block 1, async page read sr 1:0:0:0: [sr0] tag#0 unaligned transfer I/O error, dev sr0, sector 2 op 0x0:(READ) flags 0x800000 phys_seg 1 prio class 2 Buffer I/O error on dev sr0, logical block 2, async page read sr 1:0:0:0: [sr0] tag#0 unaligned transfer I/O error, dev sr0, sector 3 op 0x0:(READ) flags 0x800000 phys_seg 1 prio class 2 Buffer I/O error on dev sr0, logical block 3, async page read sr 1:0:0:0: [sr0] tag#0 unaligned transfer I/O error, dev sr0, sector 4 op 0x0:(READ) flags 0x800000 phys_seg 1 prio class 2 Buffer I/O error on dev sr0, logical block 4, async page read sr 1:0:0:0: [sr0] tag#0 unaligned transfer I/O error, dev sr0, sector 5 op 0x0:(READ) flags 0x800000 phys_seg 1 prio class 2 Buffer I/O error on dev sr0, logical block 5, async page read sr 1:0:0:0: [sr0] tag#0 unaligned transfer I/O error, dev sr0, sector 6 op 0x0:(READ) flags 0x800000 phys_seg 1 prio class 2 Buffer I/O error on dev sr0, logical block 6, async page read sr 1:0:0:0: [sr0] tag#0 unaligned transfer I/O error, dev sr0, sector 7 op 0x0:(READ) flags 0x800000 phys_seg 1 prio class 2 Buffer I/O error on dev sr0, logical block 7, async page read 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 00 00 00 00 00 08 00 I/O error, dev sr0, sector 0 op 0x0:(READ) flags 0x880700 phys_seg 4 prio class 2 mac80211_hwsim hwsim17 wlan1: entered promiscuous mode mac80211_hwsim hwsim17 wlan1: left promiscuous mode loop6: detected capacity change from 0 to 2048 EXT4-fs (loop6): can't mount with journal_async_commit, fs mounted w/o journal mac80211_hwsim hwsim5 wlan1: entered promiscuous mode mac80211_hwsim hwsim5 wlan1: left promiscuous mode loop6: detected capacity change from 0 to 2048 EXT4-fs (loop6): can't mount with journal_async_commit, fs mounted w/o journal mac80211_hwsim hwsim17 wlan1: entered promiscuous mode mac80211_hwsim hwsim17 wlan1: left promiscuous mode mac80211_hwsim hwsim17 wlan1: entered promiscuous mode mac80211_hwsim hwsim5 wlan1: entered promiscuous mode mac80211_hwsim hwsim17 wlan1: left promiscuous mode mac80211_hwsim hwsim5 wlan1: left promiscuous mode mac80211_hwsim hwsim5 wlan1: entered promiscuous mode mac80211_hwsim hwsim5 wlan1: left promiscuous mode audit: type=1400 audit(1768577383.662:20): avc: denied { watch } for pid=7789 comm="syz-executor.6" path="/proc/7789/task" dev="proc" ino=13080 scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=dir permissive=1 audit: type=1400 audit(1768581730.378:21): avc: denied { tracepoint } for pid=7845 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 audit: type=1400 audit(1768581730.773:22): avc: denied { watch_reads } for pid=7872 comm="syz-executor.7" path="/proc/7872/ns" dev="proc" ino=12273 scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=dir permissive=1 Bluetooth: hci4: Controller not accepting commands anymore: ncmd = 0 Bluetooth: hci4: Injecting HCI hardware error event Bluetooth: hci4: hardware error 0x00