================================ WARNING: inconsistent lock state 6.1.85-syzkaller #0 Not tainted -------------------------------- inconsistent {SOFTIRQ-ON-W} -> {IN-SOFTIRQ-W} usage. syz-executor277/3864 [HC0[0]:SC1[1]:HE0:SE0] takes: ffff8880b9935e90 (lock#9){+.?.}-{2:2}, at: local_lock_acquire include/linux/local_lock_internal.h:29 [inline] ffff8880b9935e90 (lock#9){+.?.}-{2:2}, at: __mmap_lock_do_trace_acquire_returned+0x84/0x670 mm/mmap_lock.c:237 {SOFTIRQ-ON-W} state was registered at: lock_acquire+0x1f8/0x5a0 kernel/locking/lockdep.c:5662 local_lock_acquire include/linux/local_lock_internal.h:29 [inline] __mmap_lock_do_trace_acquire_returned+0x9d/0x670 mm/mmap_lock.c:237 __mmap_lock_trace_acquire_returned include/linux/mmap_lock.h:36 [inline] mmap_read_trylock include/linux/mmap_lock.h:137 [inline] get_mmap_lock_carefully mm/memory.c:5304 [inline] lock_mm_and_find_vma+0x219/0x2e0 mm/memory.c:5366 do_user_addr_fault arch/x86/mm/fault.c:1343 [inline] handle_page_fault arch/x86/mm/fault.c:1462 [inline] exc_page_fault+0x169/0x660 arch/x86/mm/fault.c:1518 asm_exc_page_fault+0x22/0x30 arch/x86/include/asm/idtentry.h:570 irq event stamp: 997 hardirqs last enabled at (996): [] native_save_fl arch/x86/include/asm/irqflags.h:22 [inline] hardirqs last enabled at (996): [] arch_local_save_flags arch/x86/include/asm/irqflags.h:70 [inline] hardirqs last enabled at (996): [] arch_irqs_disabled arch/x86/include/asm/irqflags.h:130 [inline] hardirqs last enabled at (996): [] seqcount_lockdep_reader_access+0x153/0x220 include/linux/seqlock.h:104 hardirqs last disabled at (997): [] __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:108 [inline] hardirqs last disabled at (997): [] _raw_spin_lock_irqsave+0xac/0x120 kernel/locking/spinlock.c:162 softirqs last enabled at (936): [] spin_unlock_bh include/linux/spinlock.h:396 [inline] softirqs last enabled at (936): [] bpf_link_settle+0x7d/0x140 kernel/bpf/syscall.c:2891 softirqs last disabled at (985): [] invoke_softirq kernel/softirq.c:445 [inline] softirqs last disabled at (985): [] __irq_exit_rcu+0x155/0x240 kernel/softirq.c:650 other info that might help us debug this: Possible unsafe locking scenario: CPU0 ---- lock(lock#9); lock(lock#9); *** DEADLOCK *** 9 locks held by syz-executor277/3864: #0: ffff8880790d44d8 (&mm->mmap_lock){++++}-{3:3}, at: mmap_read_trylock include/linux/mmap_lock.h:136 [inline] #0: ffff8880790d44d8 (&mm->mmap_lock){++++}-{3:3}, at: get_mmap_lock_carefully mm/memory.c:5304 [inline] #0: ffff8880790d44d8 (&mm->mmap_lock){++++}-{3:3}, at: lock_mm_and_find_vma+0x2e/0x2e0 mm/memory.c:5366 #1: ffffffff8d12ac40 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:350 [inline] #1: ffffffff8d12ac40 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:791 [inline] #1: ffffffff8d12ac40 (rcu_read_lock){....}-{1:2}, at: filemap_map_pages+0x277/0x12c0 mm/filemap.c:3415 #2: ffff88807add5738 (ptlock_ptr(page)#2){+.+.}-{2:2}, at: spin_lock include/linux/spinlock.h:351 [inline] #2: ffff88807add5738 (ptlock_ptr(page)#2){+.+.}-{2:2}, at: filemap_map_pages+0x958/0x12c0 mm/filemap.c:3426 #3: ffffffff8d12abc0 (rcu_read_lock_sched){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:350 [inline] #3: ffffffff8d12abc0 (rcu_read_lock_sched){....}-{1:2}, at: rcu_read_lock_sched include/linux/rcupdate.h:883 [inline] #3: ffffffff8d12abc0 (rcu_read_lock_sched){....}-{1:2}, at: pfn_valid+0xf6/0x440 include/linux/mmzone.h:1857 #4: ffff88801fc8f560 (&fq->mq_flush_lock){..-.}-{2:2}, at: flush_end_io+0xbd/0xa70 block/blk-flush.c:230 #5: ffffffff8d12ac40 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:350 [inline] #5: ffffffff8d12ac40 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:791 [inline] #5: ffffffff8d12ac40 (rcu_read_lock){....}-{1:2}, at: __queue_work+0xe5/0xf90 kernel/workqueue.c:1443 #6: ffff8880b993a620 (&pool->lock){-.-.}-{2:2}, at: __queue_work+0x58c/0xf90 #7: ffffffff8d12ac40 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:350 [inline] #7: ffffffff8d12ac40 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:791 [inline] #7: ffffffff8d12ac40 (rcu_read_lock){....}-{1:2}, at: __bpf_trace_run kernel/trace/bpf_trace.c:2272 [inline] #7: ffffffff8d12ac40 (rcu_read_lock){....}-{1:2}, at: bpf_trace_run3+0x146/0x440 kernel/trace/bpf_trace.c:2313 #8: ffff8880790d44d8 (&mm->mmap_lock){++++}-{3:3}, at: mmap_read_trylock include/linux/mmap_lock.h:136 [inline] #8: ffff8880790d44d8 (&mm->mmap_lock){++++}-{3:3}, at: stack_map_get_build_id_offset+0x232/0x9c0 kernel/bpf/stackmap.c:144 stack backtrace: CPU: 1 PID: 3864 Comm: syz-executor277 Not tainted 6.1.85-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x1e3/0x2cb lib/dump_stack.c:106 valid_state+0x136/0x1c0 kernel/locking/lockdep.c:3969 mark_lock_irq+0xa8/0xba0 kernel/locking/lockdep.c:4172 mark_lock+0x21c/0x340 kernel/locking/lockdep.c:4628 __lock_acquire+0xb7f/0x1f80 kernel/locking/lockdep.c:5003 lock_acquire+0x1f8/0x5a0 kernel/locking/lockdep.c:5662 local_lock_acquire include/linux/local_lock_internal.h:29 [inline] __mmap_lock_do_trace_acquire_returned+0x9d/0x670 mm/mmap_lock.c:237 __mmap_lock_trace_acquire_returned include/linux/mmap_lock.h:36 [inline] mmap_read_trylock include/linux/mmap_lock.h:137 [inline] stack_map_get_build_id_offset+0x99e/0x9c0 kernel/bpf/stackmap.c:144 __bpf_get_stack+0x495/0x570 kernel/bpf/stackmap.c:452 ____bpf_get_stack_raw_tp kernel/trace/bpf_trace.c:1877 [inline] bpf_get_stack_raw_tp+0x1b2/0x220 kernel/trace/bpf_trace.c:1867 bpf_prog_e6cf5f9c69743609+0x3a/0x3e bpf_dispatcher_nop_func include/linux/bpf.h:989 [inline] __bpf_prog_run include/linux/filter.h:603 [inline] bpf_prog_run include/linux/filter.h:610 [inline] __bpf_trace_run kernel/trace/bpf_trace.c:2273 [inline] bpf_trace_run3+0x231/0x440 kernel/trace/bpf_trace.c:2313 __traceiter_workqueue_queue_work+0x79/0xd0 include/trace/events/workqueue.h:23 trace_workqueue_queue_work include/trace/events/workqueue.h:23 [inline] __queue_work+0xeeb/0xf90 kernel/workqueue.c:1500 mod_delayed_work_on+0x101/0x250 kernel/workqueue.c:1742 kblockd_mod_delayed_work_on+0x25/0x30 block/blk-core.c:1047 blk_flush_queue_rq block/blk-flush.c:143 [inline] blk_flush_complete_seq+0x6d3/0xc80 block/blk-flush.c:198 flush_end_io+0x804/0xa70 block/blk-flush.c:268 __blk_mq_end_request+0x3a3/0x480 block/blk-mq.c:1041 scsi_end_request+0x4d3/0xa00 drivers/scsi/scsi_lib.c:576 scsi_io_completion+0x1b9/0x430 drivers/scsi/scsi_lib.c:979 blk_complete_reqs block/blk-mq.c:1131 [inline] blk_done_softirq+0xf8/0x140 block/blk-mq.c:1136 __do_softirq+0x2e9/0xa4c kernel/softirq.c:571 invoke_softirq kernel/softirq.c:445 [inline] __irq_exit_rcu+0x155/0x240 kernel/softirq.c:650 irq_exit_rcu+0x5/0x20 kernel/softirq.c:662 common_interrupt+0xa4/0xc0 arch/x86/kernel/irq.c:240 asm_common_interrupt+0x22/0x40 arch/x86/include/asm/idtentry.h:644 RIP: 0010:lock_acquire+0x26f/0x5a0 kernel/locking/lockdep.c:5666 Code: 2b 00 74 08 4c 89 f7 e8 bf a6 77 00 f6 44 24 61 02 0f 85 84 01 00 00 41 f7 c7 00 02 00 00 74 01 fb 48 c7 44 24 40 0e 36 e0 45 <4b> c7 44 25 00 00 00 00 00 43 c7 44 25 09 00 00 00 00 43 c7 44 25 RSP: 0000:ffffc900063377c0 EFLAGS: 00000206 RAX: 0000000000000001 RBX: 1ffff92000c66f04 RCX: 1ffff92000c66ea4 RDX: dffffc0000000000 RSI: ffffffff8aec1340 RDI: ffffffff8b3d4120 RBP: ffffc90006337920 R08: dffffc0000000000 R09: fffffbfff2093045 R10: 0000000000000000 R11: dffffc0000000001 R12: 1ffff92000c66f00 R13: dffffc0000000000 R14: ffffc90006337820 R15: 0000000000000246 rcu_lock_acquire include/linux/rcupdate.h:350 [inline] rcu_read_lock_sched include/linux/rcupdate.h:883 [inline] pfn_valid+0x113/0x440 include/linux/mmzone.h:1857 page_table_check_set+0x25/0x6f0 mm/page_table_check.c:105 page_table_check_pte_set include/linux/page_table_check.h:83 [inline] set_pte_at arch/x86/include/asm/pgtable.h:1009 [inline] do_set_pte+0x584/0x590 mm/memory.c:4407 filemap_map_pages+0xc7c/0x12c0 mm/filemap.c:3452 do_fault_around mm/memory.c:4581 [inline] do_read_fault mm/memory.c:4607 [inline] do_fault mm/memory.c:4741 [inline] handle_pte_fault mm/memory.c:5013 [inline] __handle_mm_fault mm/memory.c:5155 [inline] handle_mm_fault+0x33e2/0x5340 mm/memory.c:5276 do_user_addr_fault arch/x86/mm/fault.c:1371 [inline] handle_page_fault arch/x86/mm/fault.c:1462 [inline] exc_page_fault+0x26f/0x660 arch/x86/mm/fault.c:1518 asm_exc_page_fault+0x22/0x30 arch/x86/include/asm/idtentry.h:570 RIP: 0033:0x7f854fbcf328 Code: Unable to access opcode bytes at 0x7f854fbcf2fe. RSP: 002b:00007ffdcb0df588 EFLAGS: 00010206 RAX: 00007f854fbffad8 RBX: 0000000000000000 RCX: 0000000000000004 RDX: 00007f854fc00d20 RSI: 0000000000000000 RDI: 00007f854fbffad8 RBP: 00007f854fbfe120 R08: 00000000000000a0 R09: 00000000000000a0 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f854fc00d08 R13: 0000000000000000 R14: 00007f854fc00d20 R15: 00007f854fb56290 ---------------- Code disassembly (best guess): 0: 2b 00 sub (%rax),%eax 2: 74 08 je 0xc 4: 4c 89 f7 mov %r14,%rdi 7: e8 bf a6 77 00 call 0x77a6cb c: f6 44 24 61 02 testb $0x2,0x61(%rsp) 11: 0f 85 84 01 00 00 jne 0x19b 17: 41 f7 c7 00 02 00 00 test $0x200,%r15d 1e: 74 01 je 0x21 20: fb sti 21: 48 c7 44 24 40 0e 36 movq $0x45e0360e,0x40(%rsp) 28: e0 45 * 2a: 4b c7 44 25 00 00 00 movq $0x0,0x0(%r13,%r12,1) <-- trapping instruction 31: 00 00 33: 43 c7 44 25 09 00 00 movl $0x0,0x9(%r13,%r12,1) 3a: 00 00 3c: 43 rex.XB 3d: c7 .byte 0xc7 3e: 44 rex.R 3f: 25 .byte 0x25