===================================== WARNING: bad unlock balance detected! 6.19.0-rc5-next-20260116 #1 Not tainted ------------------------------------- syz-executor.3/4383 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.3/4383: #0: ffff88800f78e3f8 (sb_writers#3){.+.+}-{0:0}, at: filename_create+0xf7/0x400 #1: ffff888046e259a8 (&type->i_mutex_dir_key#3/1){+.+.}-{4:4}, at: filename_create+0x1b1/0x400 #2: ffff88800f79a950 (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: 4383 Comm: syz-executor.3 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: 0033:0x7f642abfe427 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:00007ffd68157e08 EFLAGS: 00000202 ORIG_RAX: 0000000000000058 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f642abfe427 RDX: 00007ffd68157ee7 RSI: 00007f642ac59019 RDI: 00007ffd68157ed0 RBP: 0000000000000000 R08: 0000000000000000 R09: 00007ffd68157ca0 R10: 00007ffd68157b57 R11: 0000000000000202 R12: 0000000000000001 R13: 0000000000000001 R14: 0000000000000001 R15: 00007ffd68157ed0 ------------[ cut here ]------------ WARNING: kernel/rcu/tree_plugin.h:443 at __rcu_read_unlock+0x25f/0x5c0, CPU#1: syz-executor.3/4383 Modules linked in: CPU: 1 UID: 0 PID: 4383 Comm: syz-executor.3 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:ffff8880481d79a0 EFLAGS: 00010286 RAX: 00000000ffffffff RBX: ffff888016b7d280 RCX: ffffffff815660f7 RDX: 0000000000000000 RSI: ffffffff81566100 RDI: ffff888016b7d67c RBP: ffff888016b7d280 R08: 0000000000000000 R09: fffffbfff0ba7040 R10: 0000000000000000 R11: 0000000000000001 R12: ffff888016b7d280 R13: 0000000000000001 R14: ffffffff85c0dab0 R15: ffff888046d56bf0 FS: 0000555567ed7400(0000) GS:ffff8880e5442000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f642ac7e543 CR3: 000000000c863000 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: 0033:0x7f642abfe427 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:00007ffd68157e08 EFLAGS: 00000202 ORIG_RAX: 0000000000000058 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f642abfe427 RDX: 00007ffd68157ee7 RSI: 00007f642ac59019 RDI: 00007ffd68157ed0 RBP: 0000000000000000 R08: 0000000000000000 R09: 00007ffd68157ca0 R10: 00007ffd68157b57 R11: 0000000000000202 R12: 0000000000000001 R13: 0000000000000001 R14: 0000000000000001 R15: 00007ffd68157ed0 irq event stamp: 351 hardirqs last enabled at (351): [] irqentry_exit+0x17b/0x650 hardirqs last disabled at (349): [] handle_softirqs+0x65e/0x7d0 softirqs last enabled at (350): [] __irq_exit_rcu+0xc4/0x100 softirqs last disabled at (181): [] __irq_exit_rcu+0xc4/0x100 ---[ end trace 0000000000000000 ]--- netlink: 20 bytes leftover after parsing attributes in process `syz-executor.3'. ieee80211 phy18: Selected rate control algorithm 'minstrel_ht' netlink: 20 bytes leftover after parsing attributes in process `syz-executor.3'. ieee80211 phy19: Selected rate control algorithm 'minstrel_ht' process 'syz-executor.7' launched './file1' with NULL argv: empty string added netlink: 20 bytes leftover after parsing attributes in process `syz-executor.3'. ieee80211 phy20: Selected rate control algorithm 'minstrel_ht' netlink: 20 bytes leftover after parsing attributes in process `syz-executor.3'. ieee80211 phy21: Selected rate control algorithm 'minstrel_ht' loop5: detected capacity change from 0 to 264 loop4: detected capacity change from 0 to 2048 ISO 9660 Extensions: RRIP_1991A EXT4-fs error (device loop4): ext4_quota_enable:7179: comm syz-executor.4: Bad quota inum: 8, type: 0 EXT4-fs warning (device loop4): ext4_enable_quotas:7224: Failed to enable quota tracking (type=0, err=-117, ino=8). Please run e2fsck to fix. EXT4-fs (loop4): mount failed loop4: detected capacity change from 0 to 2048 EXT4-fs error (device loop4): ext4_quota_enable:7179: comm syz-executor.4: Bad quota inum: 8, type: 0 EXT4-fs warning (device loop4): ext4_enable_quotas:7224: Failed to enable quota tracking (type=0, err=-117, ino=8). Please run e2fsck to fix. EXT4-fs (loop4): mount failed audit: type=1400 audit(1768575614.381:10): avc: denied { write } for pid=4502 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 loop4: detected capacity change from 0 to 2048 EXT4-fs error (device loop4): ext4_quota_enable:7179: comm syz-executor.4: Bad quota inum: 8, type: 0 EXT4-fs warning (device loop4): ext4_enable_quotas:7224: Failed to enable quota tracking (type=0, err=-117, ino=8). Please run e2fsck to fix. EXT4-fs (loop4): mount failed loop4: detected capacity change from 0 to 2048 EXT4-fs error (device loop4): ext4_quota_enable:7179: comm syz-executor.4: Bad quota inum: 8, type: 0 EXT4-fs warning (device loop4): ext4_enable_quotas:7224: Failed to enable quota tracking (type=0, err=-117, ino=8). Please run e2fsck to fix. EXT4-fs (loop4): mount failed sit: Dst spoofed 0.0.0.0/2002::2000 -> 0.0.0.0/2002:7bc3:78dc:2b7a:200:5efe:238.255.63.0 sit: Dst spoofed 0.0.0.0/2002::2000 -> 0.0.0.0/2002:7bc3:78dc:2b7a:200:5efe:238.255.63.0 sit: Dst spoofed 0.0.0.0/2002::2000 -> 0.0.0.0/2002:7bc3:78dc:2b7a:200:5efe:238.255.63.0 loop4: detected capacity change from 0 to 2048 EXT4-fs error (device loop4): ext4_quota_enable:7179: comm syz-executor.4: Bad quota inum: 8, type: 0 EXT4-fs warning (device loop4): ext4_enable_quotas:7224: Failed to enable quota tracking (type=0, err=-117, ino=8). Please run e2fsck to fix. EXT4-fs (loop4): mount failed loop6: detected capacity change from 0 to 64 FAT-fs (loop6): Invalid FSINFO signature: 0x00000000, 0x00000000 (sector = 1) sit: Dst spoofed 0.0.0.0/2002::2000 -> 0.0.0.0/2002:7bc3:78dc:2b7a:200:5efe:238.255.63.0 sit: Dst spoofed 0.0.0.0/2002::2000 -> 0.0.0.0/2002:7bc3:78dc:2b7a:200:5efe:238.255.63.0 loop3: detected capacity change from 0 to 64 FAT-fs (loop3): Invalid FSINFO signature: 0x00000000, 0x00000000 (sector = 1) audit: type=1400 audit(1768575616.044:11): avc: denied { read } for pid=4647 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 loop7: detected capacity change from 0 to 131078 loop7: detected capacity change from 0 to 131078 audit: type=1400 audit(1768575618.745:12): avc: denied { tracepoint } for pid=4991 comm="syz-executor.0" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=perf_event permissive=1 set_capacity_and_notify: 4 callbacks suppressed loop5: detected capacity change from 0 to 131078 random: crng reseeded on system resumption Restarting kernel threads ... Done restarting kernel threads. random: crng reseeded on system resumption random: crng reseeded on system resumption Restarting kernel threads ... Done restarting kernel threads. random: crng reseeded on system resumption Restarting kernel threads ... Done restarting kernel threads. random: crng reseeded on system resumption Restarting kernel threads ... Done restarting kernel threads. random: crng reseeded on system resumption Restarting kernel threads ... Done restarting kernel threads. random: crng reseeded on system resumption Restarting kernel threads ... Done restarting kernel threads. random: crng reseeded on system resumption Restarting kernel threads ... Done restarting kernel threads. random: crng reseeded on system resumption Restarting kernel threads ... Done restarting kernel threads. random: crng reseeded on system resumption Restarting kernel threads ... Done restarting kernel threads. random: crng reseeded on system resumption Restarting kernel threads ... Done restarting kernel threads. loop4: detected capacity change from 0 to 64 FAT-fs (loop4): Invalid FSINFO signature: 0x00000000, 0x00000000 (sector = 1) loop1: detected capacity change from 0 to 136 loop4: detected capacity change from 0 to 64 FAT-fs (loop4): Invalid FSINFO signature: 0x00000000, 0x00000000 (sector = 1) loop4: detected capacity change from 0 to 64 ext3: Bad value for 'errors' ext3: Bad value for 'errors' FAT-fs (loop4): Invalid FSINFO signature: 0x00000000, 0x00000000 (sector = 1) ext3: Bad value for 'errors' loop4: detected capacity change from 0 to 64 FAT-fs (loop4): Invalid FSINFO signature: 0x00000000, 0x00000000 (sector = 1)