------------[ cut here ]------------
debug_locks && !(lock_is_held(&(__rq_lockp(rq))->dep_map) != 0)
WARNING: kernel/sched/sched.h:1600 at lockdep_assert_rq_held kernel/sched/sched.h:1600 [inline], CPU#0: syz.2.3/5916
WARNING: kernel/sched/sched.h:1600 at lockdep_assert_rq_held kernel/sched/sched.h:1597 [inline], CPU#0: syz.2.3/5916
WARNING: kernel/sched/sched.h:1600 at update_rq_clock+0x40a/0xd20 kernel/sched/core.c:850, CPU#0: syz.2.3/5916
Modules linked in:
CPU: 0 UID: 0 PID: 5916 Comm: syz.2.3 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2026
RIP: 0010:lockdep_assert_rq_held kernel/sched/sched.h:1600 [inline]
RIP: 0010:lockdep_assert_rq_held kernel/sched/sched.h:1597 [inline]
RIP: 0010:update_rq_clock+0x40a/0xd20 kernel/sched/core.c:850
Code: ab 48 0b 00 00 48 83 c4 18 5b 5d 41 5c 41 5d 41 5e 41 5f e9 88 07 b9 09 a8 04 0f 84 df fc ff ff 90 0f 0b 90 e9 d6 fc ff ff 90 <0f> 0b 90 e9 92 fc ff ff 4c 8d 83 40 0b 00 00 48 b8 00 00 00 00 00
RSP: 0018:ffffc900043f7210 EFLAGS: 00010046
RAX: 0000000000000000 RBX: ffff8880b853b280 RCX: 0000000000000001
RDX: 0000000000000046 RSI: ffffffff8de4f364 RDI: ffffffff8c1adb20
RBP: ffffc900043f73b8 R08: 0000000000000001 R09: 0000000000000001
R10: ffffffff90d95417 R11: 0000000000000000 R12: ffffffff90d98714
R13: ffff8880b853c0c0 R14: ffff88801e6e1e40 R15: ffff8880b853b280
FS:  00007feca83f66c0(0000) GS:ffff88812435a000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055555dcbaa28 CR3: 000000007c6be000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 pick_next_task kernel/sched/core.c:6129 [inline]
 __schedule+0x1b7d/0x60e0 kernel/sched/core.c:6848
 preempt_schedule_irq+0x50/0x90 kernel/sched/core.c:7234
 irqentry_exit+0x17b/0x670 kernel/entry/common.c:239
 asm_sysvec_reschedule_ipi+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:__sanitizer_cov_trace_pc+0x54/0x70 kernel/kcov.c:222
Code: e9 91 d3 86 09 8b 82 54 16 00 00 85 c0 74 f1 8b 82 30 16 00 00 83 f8 02 75 e6 48 8b 8a 38 16 00 00 8b 92 34 16 00 00 48 8b 01 <48> 83 c0 01 48 39 d0 73 cd 48 89 01 48 89 34 c1 e9 57 d3 86 09 0f
RSP: 0018:ffffc900043f74c8 EFLAGS: 00000246
RAX: 000000000007ffff RBX: 0000000000000001 RCX: ffffc9000f456000
RDX: 0000000000080000 RSI: ffffffff824445b8 RDI: ffff8880203adf44
RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000000 R12: ffffffffffffffff
R13: 0000000000000001 R14: 0000000000000000 R15: ffff8880796d0298
 arch_test_and_clear_bit arch/x86/include/asm/bitops.h:159 [inline]
 test_and_clear_bit include/asm-generic/bitops/instrumented-atomic.h:86 [inline]
 folio_test_clear_dirty include/linux/page-flags.h:556 [inline]
 folio_clear_dirty_for_io+0x178/0x820 mm/page-writeback.c:2909
 mpage_submit_folio+0x84/0x330 fs/ext4/inode.c:2061
 mpage_map_and_submit_buffers+0x5f2/0xb50 fs/ext4/inode.c:2323
 mpage_map_and_submit_extent fs/ext4/inode.c:2513 [inline]
 ext4_do_writepages+0x23fa/0x3f50 fs/ext4/inode.c:2925
 ext4_writepages+0x347/0x790 fs/ext4/inode.c:3019
 do_writepages+0x278/0x600 mm/page-writeback.c:2554
 filemap_writeback+0x22d/0x2e0 mm/filemap.c:387
 filemap_fdatawrite_range mm/filemap.c:412 [inline]
 file_write_and_wait_range+0xcd/0x140 mm/filemap.c:786
 ext4_sync_file+0x306/0xf10 fs/ext4/fsync.c:154
 vfs_fsync_range+0x9b/0x190 fs/sync.c:186
 __do_sys_msync+0x3ca/0x590 mm/msync.c:96
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0x106/0xf80 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fecaa19bf79
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007feca83f6028 EFLAGS: 00000246 ORIG_RAX: 000000000000001a
RAX: ffffffffffffffda RBX: 00007fecaa416180 RCX: 00007fecaa19bf79
RDX: 0000000400000004 RSI: 01800000000000fe RDI: 000000001ffff000
RBP: 00007fecaa2327e0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fecaa416218 R14: 00007fecaa416180 R15: 00007ffff789a988
 </TASK>
----------------
Code disassembly (best guess):
   0:	e9 91 d3 86 09       	jmp    0x986d396
   5:	8b 82 54 16 00 00    	mov    0x1654(%rdx),%eax
   b:	85 c0                	test   %eax,%eax
   d:	74 f1                	je     0x0
   f:	8b 82 30 16 00 00    	mov    0x1630(%rdx),%eax
  15:	83 f8 02             	cmp    $0x2,%eax
  18:	75 e6                	jne    0x0
  1a:	48 8b 8a 38 16 00 00 	mov    0x1638(%rdx),%rcx
  21:	8b 92 34 16 00 00    	mov    0x1634(%rdx),%edx
  27:	48 8b 01             	mov    (%rcx),%rax
* 2a:	48 83 c0 01          	add    $0x1,%rax <-- trapping instruction
  2e:	48 39 d0             	cmp    %rdx,%rax
  31:	73 cd                	jae    0x0
  33:	48 89 01             	mov    %rax,(%rcx)
  36:	48 89 34 c1          	mov    %rsi,(%rcx,%rax,8)
  3a:	e9 57 d3 86 09       	jmp    0x986d396
  3f:	0f                   	.byte 0xf