I/O error, dev sr0, sector 6 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 2 Buffer I/O error on dev sr0, logical block 6, async page read ------------[ cut here ]------------ ====================================================== WARNING: possible circular locking dependency detected 6.0.0-rc7-next-20220930 #1 Not tainted ------------------------------------------------------ syz-executor.1/3674 is trying to acquire lock: ffffffff853faab8 ((console_sem).lock){....}-{2:2}, at: down_trylock+0xe/0x70 but task is already holding lock: ffff888040268420 (&ctx->lock){....}-{2:2}, at: __perf_event_task_sched_in+0x2a0/0x6e0 which lock already depends on the new lock. the existing dependency chain (in reverse order) is: -> #3 (&ctx->lock){....}-{2:2}: _raw_spin_lock+0x2a/0x40 __perf_event_task_sched_out+0x53b/0x18d0 __schedule+0xedd/0x2470 preempt_schedule_common+0x45/0xc0 __cond_resched+0x17/0x30 __mutex_lock+0xa3/0x14d0 __do_sys_perf_event_open+0x1eec/0x32c0 do_syscall_64+0x3b/0x90 entry_SYSCALL_64_after_hwframe+0x63/0xcd -> #2 (&rq->__lock){-.-.}-{2:2}: _raw_spin_lock_nested+0x30/0x40 raw_spin_rq_lock_nested+0x1e/0x30 task_fork_fair+0x63/0x4d0 sched_cgroup_fork+0x3d0/0x540 copy_process+0x4183/0x6e20 kernel_clone+0xe7/0x890 user_mode_thread+0xad/0xf0 rest_init+0x24/0x250 arch_call_rest_init+0xf/0x14 start_kernel+0x4c6/0x4eb secondary_startup_64_no_verify+0xe0/0xeb -> #1 (&p->pi_lock){-.-.}-{2:2}: _raw_spin_lock_irqsave+0x39/0x60 try_to_wake_up+0xab/0x1930 up+0x75/0xb0 __up_console_sem+0x6e/0x80 console_unlock+0x46a/0x590 vprintk_emit+0x1bd/0x560 vprintk+0x84/0xa0 _printk+0xba/0xf1 kauditd_hold_skb.cold+0x3f/0x4e kauditd_send_queue+0x233/0x290 kauditd_thread+0x5f9/0x9c0 kthread+0x2ed/0x3a0 ret_from_fork+0x22/0x30 -> #0 ((console_sem).lock){....}-{2:2}: __lock_acquire+0x2a02/0x5e70 lock_acquire+0x1a2/0x530 _raw_spin_lock_irqsave+0x39/0x60 down_trylock+0xe/0x70 __down_trylock_console_sem+0x3b/0xd0 vprintk_emit+0x16b/0x560 vprintk+0x84/0xa0 _printk+0xba/0xf1 report_bug.cold+0x72/0xab handle_bug+0x3c/0x70 exc_invalid_op+0x14/0x50 asm_exc_invalid_op+0x16/0x20 event_filter_match+0x422/0x660 merge_sched_in+0x107/0x1110 visit_groups_merge.constprop.0.isra.0+0x4fc/0xef0 ctx_sched_in+0x2e6/0x770 perf_event_sched_in+0x58/0x80 __perf_event_task_sched_in+0x408/0x6e0 finish_task_switch.isra.0+0x46d/0x8a0 __schedule+0x89b/0x2470 preempt_schedule_common+0x45/0xc0 __cond_resched+0x17/0x30 mempool_alloc+0x1cb/0x370 bio_alloc_bioset+0x39a/0x780 submit_bh_wbc+0x281/0x650 block_read_full_folio+0x5de/0x910 filemap_read_folio+0x5c/0x1f0 filemap_get_pages+0xd74/0x1590 filemap_read+0x311/0xb60 blkdev_read_iter+0x2b9/0x740 aio_read+0x2a8/0x460 io_submit_one+0x5d3/0x1b10 __x64_sys_io_submit+0x18d/0x2f0 do_syscall_64+0x3b/0x90 entry_SYSCALL_64_after_hwframe+0x63/0xcd other info that might help us debug this: Chain exists of: (console_sem).lock --> &rq->__lock --> &ctx->lock Possible unsafe locking scenario: CPU0 CPU1 ---- ---- lock(&ctx->lock); lock(&rq->__lock); lock(&ctx->lock); lock((console_sem).lock); *** DEADLOCK *** 3 locks held by syz-executor.1/3674: #0: ffff888008141378 (mapping.invalidate_lock#2){.+.+}-{3:3}, at: filemap_get_pages+0x78d/0x1590 #1: ffff88806ce3d2e0 (&cpuctx_lock){....}-{2:2}, at: __perf_event_task_sched_in+0x28f/0x6e0 #2: ffff888040268420 (&ctx->lock){....}-{2:2}, at: __perf_event_task_sched_in+0x2a0/0x6e0 stack backtrace: CPU: 0 PID: 3674 Comm: syz-executor.1 Not tainted 6.0.0-rc7-next-20220930 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014 Call Trace: dump_stack_lvl+0x8b/0xb3 check_noncircular+0x263/0x2e0 __lock_acquire+0x2a02/0x5e70 lock_acquire+0x1a2/0x530 _raw_spin_lock_irqsave+0x39/0x60 down_trylock+0xe/0x70 __down_trylock_console_sem+0x3b/0xd0 vprintk_emit+0x16b/0x560 vprintk+0x84/0xa0 _printk+0xba/0xf1 report_bug.cold+0x72/0xab handle_bug+0x3c/0x70 exc_invalid_op+0x14/0x50 asm_exc_invalid_op+0x16/0x20 RIP: 0010:event_filter_match+0x422/0x660 Code: 00 00 00 e9 7c fc ff ff e8 7b 33 f1 ff 65 8b 2d 00 9d ad 7e 31 ff 89 ee e8 1b 30 f1 ff 85 ed 0f 84 ef 00 00 00 e8 5e 33 f1 ff <0f> 0b eb 9f e8 d5 a1 23 00 e9 17 fc ff ff e8 4b 33 f1 ff 48 8d 7b RSP: 0018:ffff888040b9ef88 EFLAGS: 00010006 RAX: 0000000040000002 RBX: ffff888040ba0000 RCX: 0000000000000000 RDX: ffff88801b7e8000 RSI: ffffffff8154d8d2 RDI: 0000000000000005 RBP: 0000000000000000 R08: 0000000000000005 R09: 0000000000000001 R10: 0000000000000000 R11: ffffffff865b401b R12: ffff888040ba0220 R13: 0000000000000000 R14: ffff888040ba00a8 R15: ffff888040ba0220 merge_sched_in+0x107/0x1110 visit_groups_merge.constprop.0.isra.0+0x4fc/0xef0 ctx_sched_in+0x2e6/0x770 perf_event_sched_in+0x58/0x80 __perf_event_task_sched_in+0x408/0x6e0 finish_task_switch.isra.0+0x46d/0x8a0 __schedule+0x89b/0x2470 preempt_schedule_common+0x45/0xc0 __cond_resched+0x17/0x30 mempool_alloc+0x1cb/0x370 bio_alloc_bioset+0x39a/0x780 submit_bh_wbc+0x281/0x650 block_read_full_folio+0x5de/0x910 filemap_read_folio+0x5c/0x1f0 filemap_get_pages+0xd74/0x1590 filemap_read+0x311/0xb60 blkdev_read_iter+0x2b9/0x740 aio_read+0x2a8/0x460 io_submit_one+0x5d3/0x1b10 __x64_sys_io_submit+0x18d/0x2f0 do_syscall_64+0x3b/0x90 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7f0b2dc04b19 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 bc ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f0b2b17a188 EFLAGS: 00000246 ORIG_RAX: 00000000000000d1 RAX: ffffffffffffffda RBX: 00007f0b2dd17f60 RCX: 00007f0b2dc04b19 RDX: 0000000020000180 RSI: 0000000000000001 RDI: 00007f0b2dcfb000 RBP: 00007f0b2dc5ef6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffd20f3494f R14: 00007f0b2b17a300 R15: 0000000000022000 WARNING: CPU: 0 PID: 3674 at kernel/events/core.c:2233 event_filter_match+0x422/0x660 Modules linked in: CPU: 0 PID: 3674 Comm: syz-executor.1 Not tainted 6.0.0-rc7-next-20220930 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014 RIP: 0010:event_filter_match+0x422/0x660 Code: 00 00 00 e9 7c fc ff ff e8 7b 33 f1 ff 65 8b 2d 00 9d ad 7e 31 ff 89 ee e8 1b 30 f1 ff 85 ed 0f 84 ef 00 00 00 e8 5e 33 f1 ff <0f> 0b eb 9f e8 d5 a1 23 00 e9 17 fc ff ff e8 4b 33 f1 ff 48 8d 7b RSP: 0018:ffff888040b9ef88 EFLAGS: 00010006 RAX: 0000000040000002 RBX: ffff888040ba0000 RCX: 0000000000000000 RDX: ffff88801b7e8000 RSI: ffffffff8154d8d2 RDI: 0000000000000005 RBP: 0000000000000000 R08: 0000000000000005 R09: 0000000000000001 R10: 0000000000000000 R11: ffffffff865b401b R12: ffff888040ba0220 R13: 0000000000000000 R14: ffff888040ba00a8 R15: ffff888040ba0220 FS: 00007f0b2b17a700(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f77de3d06f4 CR3: 000000003ffe8000 CR4: 0000000000350ef0 Call Trace: merge_sched_in+0x107/0x1110 visit_groups_merge.constprop.0.isra.0+0x4fc/0xef0 ctx_sched_in+0x2e6/0x770 perf_event_sched_in+0x58/0x80 __perf_event_task_sched_in+0x408/0x6e0 finish_task_switch.isra.0+0x46d/0x8a0 __schedule+0x89b/0x2470 preempt_schedule_common+0x45/0xc0 __cond_resched+0x17/0x30 mempool_alloc+0x1cb/0x370 bio_alloc_bioset+0x39a/0x780 submit_bh_wbc+0x281/0x650 block_read_full_folio+0x5de/0x910 filemap_read_folio+0x5c/0x1f0 filemap_get_pages+0xd74/0x1590 filemap_read+0x311/0xb60 blkdev_read_iter+0x2b9/0x740 aio_read+0x2a8/0x460 io_submit_one+0x5d3/0x1b10 __x64_sys_io_submit+0x18d/0x2f0 do_syscall_64+0x3b/0x90 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7f0b2dc04b19 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 bc ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f0b2b17a188 EFLAGS: 00000246 ORIG_RAX: 00000000000000d1 RAX: ffffffffffffffda RBX: 00007f0b2dd17f60 RCX: 00007f0b2dc04b19 RDX: 0000000020000180 RSI: 0000000000000001 RDI: 00007f0b2dcfb000 RBP: 00007f0b2dc5ef6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffd20f3494f R14: 00007f0b2b17a300 R15: 0000000000022000 irq event stamp: 2304 hardirqs last enabled at (2303): [] mod_delayed_work_on+0x149/0x1e0 hardirqs last disabled at (2304): [] __schedule+0x1225/0x2470 softirqs last enabled at (2224): [] __irq_exit_rcu+0x11b/0x180 softirqs last disabled at (2215): [] __irq_exit_rcu+0x11b/0x180 ---[ end trace 0000000000000000 ]--- sr 1:0:0:0: [sr0] tag#0 unaligned transfer I/O error, dev sr0, sector 7 op 0x0:(READ) flags 0x0 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 0x80700 phys_seg 4 prio class 2 sr 1:0:0:0: [sr0] tag#0 unaligned transfer Buffer I/O error on dev sr0, logical block 0, async page read sr 1:0:0:0: [sr0] tag#0 unaligned transfer Buffer I/O error on dev sr0, logical block 1, async page read sr 1:0:0:0: [sr0] tag#0 unaligned transfer sr 1:0:0:0: [sr0] tag#0 unaligned transfer sr 1:0:0:0: [sr0] tag#0 unaligned transfer sr 1:0:0:0: [sr0] tag#0 unaligned transfer sr 1:0:0:0: [sr0] tag#0 unaligned transfer sr 1:0:0:0: [sr0] tag#0 unaligned transfer syz-executor.1 (3674) used greatest stack depth: 23424 bytes left device syz_tun entered promiscuous mode device syz_tun left promiscuous mode device syz_tun entered promiscuous mode device syz_tun left promiscuous mode hrtimer: interrupt took 18324 ns Bluetooth: hci2: Opcode 0x c03 failed: -110 Bluetooth: hci4: Opcode 0x c03 failed: -110