===================================== WARNING: bad unlock balance detected! 6.19.0-rc5-next-20260113 #1 Not tainted ------------------------------------- syz-executor.4/281 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.4/281: #0: ffff88800f9023f8 (sb_writers#3){.+.+}-{0:0}, at: filename_create+0xf7/0x400 #1: ffff88801b10aa00 (&type->i_mutex_dir_key#3/1){+.+.}-{4:4}, at: filename_create+0x1b1/0x400 #2: ffff88800f906950 (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: 281 Comm: syz-executor.4 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_mkdir+0x331/0xb30 vfs_mkdir+0x6d8/0xc00 do_mkdirat+0x11a/0x440 __x64_sys_mkdir+0x65/0x80 do_syscall_64+0xbf/0x420 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fc9e57e8c27 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:00007ffcd0a465a8 EFLAGS: 00000202 ORIG_RAX: 0000000000000053 RAX: ffffffffffffffda RBX: 00007ffcd0a46630 RCX: 00007fc9e57e8c27 RDX: 0000000000000000 RSI: 00000000000001ff RDI: 00007ffcd0a46630 RBP: 00007ffcd0a4660c R08: 0000000000000000 R09: 0000000000000004 R10: 00007ffcd0a46346 R11: 0000000000000202 R12: 0000000000000032 R13: 000000000002119f R14: 0000000000000004 R15: 00007ffcd0a46670 ------------[ cut here ]------------ WARNING: kernel/rcu/tree_plugin.h:443 at __rcu_read_unlock+0x25f/0x5c0, CPU#1: syz-executor.4/281 Modules linked in: CPU: 1 UID: 0 PID: 281 Comm: syz-executor.4 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:ffff888016db79e0 EFLAGS: 00010286 RAX: 00000000ffffffff RBX: ffff888014f30000 RCX: ffffffff815664c7 RDX: 0000000000000000 RSI: ffffffff815664d0 RDI: ffff888014f303fc RBP: ffff888014f30000 R08: 0000000000000000 R09: fffffbfff0ba6ff4 R10: 0000000000000000 R11: 0000000000000001 R12: ffff888014f30000 R13: 0000000000000001 R14: ffffffff85c0da60 R15: ffff88801b2b58e0 FS: 000055558d739400(0000) GS:ffff8880e5442000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b2d025000 CR3: 000000000d836000 CR4: 0000000000350ef0 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 do_mkdirat+0x11a/0x440 __x64_sys_mkdir+0x65/0x80 do_syscall_64+0xbf/0x420 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fc9e57e8c27 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:00007ffcd0a465a8 EFLAGS: 00000202 ORIG_RAX: 0000000000000053 RAX: ffffffffffffffda RBX: 00007ffcd0a46630 RCX: 00007fc9e57e8c27 RDX: 0000000000000000 RSI: 00000000000001ff RDI: 00007ffcd0a46630 RBP: 00007ffcd0a4660c R08: 0000000000000000 R09: 0000000000000004 R10: 00007ffcd0a46346 R11: 0000000000000202 R12: 0000000000000032 R13: 000000000002119f R14: 0000000000000004 R15: 00007ffcd0a46670 irq event stamp: 246329 hardirqs last enabled at (246329): [] _raw_spin_unlock_irqrestore+0x2c/0x50 hardirqs last disabled at (246328): [] _raw_spin_lock_irqsave+0x53/0x60 softirqs last enabled at (246324): [] kernel_fpu_end+0x59/0x70 softirqs last disabled at (246322): [] kernel_fpu_begin_mask+0x1bb/0x300 ---[ end trace 0000000000000000 ]--- EXT4-fs warning (device sda): verify_group_input:136: Cannot add at group 511 (only 16 groups) Bluetooth: hci4: Opcode 0x0c03 failed: -110 UDPLite6: UDP-Lite is deprecated and scheduled to be removed in 2025, please contact the netdev mailing list No source specified ======================================================= 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. ======================================================= No source specified audit: type=1400 audit(1768296885.356:11): avc: denied { read } for pid=4338 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 Bluetooth: hci7: Opcode 0x0c03 failed: -110 Bluetooth: hci0: Opcode 0x0c1a failed: -4 Bluetooth: hci0: Opcode 0x0406 failed: -4 Bluetooth: hci0: Opcode 0x0406 failed: -4 Bluetooth: hci2: Opcode 0x0c1a failed: -4 Bluetooth: hci2: Opcode 0x0406 failed: -4 Bluetooth: hci2: Opcode 0x0406 failed: -4 Bluetooth: hci3: Opcode 0x0c1a failed: -4 Bluetooth: hci3: Opcode 0x0406 failed: -4 Bluetooth: hci3: Opcode 0x0406 failed: -4 Bluetooth: hci5: Opcode 0x0c1a failed: -4 Bluetooth: hci5: Opcode 0x0406 failed: -4 Bluetooth: hci5: Opcode 0x0406 failed: -4 Bluetooth: hci1: Opcode 0x0c03 failed: -110 Bluetooth: hci6: Opcode 0x0c1a failed: -4 Bluetooth: hci6: Opcode 0x0406 failed: -4 Bluetooth: hci6: Opcode 0x0406 failed: -4 No source specified No source specified No source specified syz-executor.6 (4394) used greatest stack depth: 23408 bytes left No source specified Bluetooth: hci0: command 0x0c1a tx timeout mmap: syz-executor.7 (4420) uses deprecated remap_file_pages() syscall. See Documentation/mm/remap_file_pages.rst. No source specified netlink: 4 bytes leftover after parsing attributes in process `syz-executor.7'. No source specified Bluetooth: hci3: command 0x0c1a tx timeout Bluetooth: hci2: command 0x0c1a tx timeout Bluetooth: hci6: command 0x0c1a tx timeout Bluetooth: hci5: command 0x0c1a tx timeout FAT-fs (loop0): unable to read boot sector FAT-fs (loop0): unable to read boot sector Bluetooth: hci0: command 0x0c1a tx timeout Bluetooth: hci3: command 0x0c1a tx timeout Bluetooth: hci5: command 0x0c1a tx timeout Bluetooth: hci6: command 0x0c1a tx timeout Bluetooth: hci2: command 0x0c1a tx timeout netlink: 'syz-executor.6': attribute type 58 has an invalid length. ieee802154 phy0 wpan0: encryption failed: -22 ieee802154 phy0 wpan0: encryption failed: -22 ieee802154 phy0 wpan0: encryption failed: -22 ieee802154 phy0 wpan0: encryption failed: -22 loop4: detected capacity change from 0 to 512 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 40 00 I/O error, dev sr0, sector 0 op 0x0:(READ) flags 0x4000 phys_seg 5 prio class 2 EXT4-fs (loop4): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: none. 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 40 00 00 40 00 I/O error, dev sr0, sector 256 op 0x0:(READ) flags 0x4000 phys_seg 4 prio class 2 ext4 filesystem being mounted at /syzkaller-testdir670545426/syzkaller.eYdGlc/39/file0 supports timestamps until 2038-01-19 (0x7fffffff) EXT4-fs (loop4): unmounting filesystem 00000000-0000-0000-0000-000000000000. 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 80 00 00 40 00 I/O error, dev sr0, sector 512 op 0x0:(READ) flags 0x4000 phys_seg 11 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 00 00 c0 00 00 40 00 I/O error, dev sr0, sector 768 op 0x0:(READ) flags 0x0 phys_seg 13 prio class 2 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 filesystem being mounted at /syzkaller-testdir670545426/syzkaller.eYdGlc/40/file0 supports timestamps until 2038-01-19 (0x7fffffff) 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. 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 ext4 filesystem being mounted at /syzkaller-testdir670545426/syzkaller.eYdGlc/41/file0 supports timestamps until 2038-01-19 (0x7fffffff) sr 1:0:0:0: [sr0] tag#0 CDB: Read(10) 28 00 00 00 00 00 00 00 40 00 I/O error, dev sr0, sector 0 op 0x0:(READ) flags 0x4000 phys_seg 32 prio class 2 EXT4-fs (loop4): unmounting filesystem 00000000-0000-0000-0000-000000000000. 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 40 00 00 40 00 I/O error, dev sr0, sector 256 op 0x0:(READ) flags 0x4000 phys_seg 32 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 00 00 80 00 00 40 00 I/O error, dev sr0, sector 512 op 0x0:(READ) flags 0x4000 phys_seg 32 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 00 00 c0 00 00 40 00 I/O error, dev sr0, sector 768 op 0x0:(READ) flags 0x0 phys_seg 32 prio class 2 Bluetooth: hci0: command 0x0c1a tx timeout loop4: detected capacity change from 0 to 512 kernel read not supported for file /vga_arbiter (pid: 58 comm: kworker/0:2) EXT4-fs (loop4): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: none. kernel read not supported for file /vga_arbiter (pid: 58 comm: kworker/0:2) ext4 filesystem being mounted at /syzkaller-testdir670545426/syzkaller.eYdGlc/42/file0 supports timestamps until 2038-01-19 (0x7fffffff) EXT4-fs (loop4): unmounting filesystem 00000000-0000-0000-0000-000000000000. 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 40 00 I/O error, dev sr0, sector 0 op 0x0:(READ) flags 0x4000 phys_seg 30 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 00 00 40 00 00 40 00 I/O error, dev sr0, sector 256 op 0x0:(READ) flags 0x4000 phys_seg 32 prio class 2 Bluetooth: hci6: command 0x0c1a tx timeout Bluetooth: hci2: command 0x0c1a tx timeout Bluetooth: hci3: command 0x0c1a tx timeout Bluetooth: hci5: command 0x0c1a tx timeout 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. audit: type=1326 audit(1768296894.085:12): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=4896 comm="syz-executor.6" exe="/syz-executor.6" sig=0 arch=c000003e syscall=202 compat=0 ip=0x7f8e9995fb19 code=0x7ffc0000 audit: type=1326 audit(1768296894.086:13): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=4896 comm="syz-executor.6" exe="/syz-executor.6" sig=0 arch=c000003e syscall=202 compat=0 ip=0x7f8e9995fb19 code=0x7ffc0000 audit: type=1326 audit(1768296894.104:14): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=4896 comm="syz-executor.6" exe="/syz-executor.6" sig=0 arch=c000003e syscall=98 compat=0 ip=0x7f8e9995fb19 code=0x7ffc0000 audit: type=1326 audit(1768296894.104:15): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=4896 comm="syz-executor.6" exe="/syz-executor.6" sig=0 arch=c000003e syscall=202 compat=0 ip=0x7f8e9995fb19 code=0x7ffc0000 audit: type=1326 audit(1768296894.104:16): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=4896 comm="syz-executor.6" exe="/syz-executor.6" sig=0 arch=c000003e syscall=202 compat=0 ip=0x7f8e9995fb19 code=0x7ffc0000 audit: type=1326 audit(1768296894.170:17): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=4896 comm="syz-executor.6" exe="/syz-executor.6" sig=0 arch=c000003e syscall=298 compat=0 ip=0x7f8e9995fb19 code=0x7ffc0000 audit: type=1326 audit(1768296894.205:18): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=4896 comm="syz-executor.6" exe="/syz-executor.6" sig=0 arch=c000003e syscall=202 compat=0 ip=0x7f8e9995fb19 code=0x7ffc0000 audit: type=1326 audit(1768296894.207:19): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=4896 comm="syz-executor.6" exe="/syz-executor.6" sig=0 arch=c000003e syscall=317 compat=0 ip=0x7f8e9995fb19 code=0x7ffc0000 audit: type=1326 audit(1768296894.208:20): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=4896 comm="syz-executor.6" exe="/syz-executor.6" sig=0 arch=c000003e syscall=202 compat=0 ip=0x7f8e9995fb19 code=0x7ffc0000 audit: type=1326 audit(1768296894.216:21): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=4896 comm="syz-executor.6" exe="/syz-executor.6" sig=0 arch=c000003e syscall=202 compat=0 ip=0x7f8e9995fb19 code=0x7ffc0000 netlink: 12 bytes leftover after parsing attributes in process `syz-executor.4'. netlink: 12 bytes leftover after parsing attributes in process `syz-executor.4'.