syz-executor.4: attempt to access beyond end of device loop4: rw=2049, sector=124, nr_sectors = 4 limit=40 Buffer I/O error on dev loop4, logical block 31, lost async page write watchdog: BUG: soft lockup - CPU#1 stuck for 26s! [syz-executor.5:11027] Modules linked in: irq event stamp: 4698577 hardirqs last enabled at (4698576): [] asm_sysvec_apic_timer_interrupt+0x1a/0x20 hardirqs last disabled at (4698577): [] sysvec_apic_timer_interrupt+0xf/0xc0 softirqs last enabled at (4626008): [] __irq_exit_rcu+0x11b/0x180 softirqs last disabled at (4626011): [] __irq_exit_rcu+0x11b/0x180 CPU: 1 PID: 11027 Comm: syz-executor.5 Not tainted 6.1.0-rc5-next-20221114 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:stack_trace_consume_entry+0xe/0x170 Code: e9 52 fd ff ff e8 22 d0 05 03 66 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 48 b8 00 00 00 00 00 fc ff df <55> 53 48 89 fb 48 83 c7 10 48 89 fa 48 c1 ea 03 48 83 ec 08 0f b6 RSP: 0018:ffff88806cf09710 EFLAGS: 00000286 RAX: dffffc0000000000 RBX: ffffffff8137ec20 RCX: 0000000000000000 RDX: 1ffff1100d9e12ee RSI: ffffffff811827f9 RDI: ffff88806cf097e0 RBP: ffff88806cf097b0 R08: ffffffff8605d24a R09: ffffffff8605d24e R10: ffffed100d9e12f0 R11: ffff88806cf09758 R12: ffff88806cf097e0 R13: 0000000000000000 R14: ffff88804421d040 R15: 0000000000000820 FS: 00007f869484d700(0000) GS:ffff88806cf00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f6fad3b6f64 CR3: 0000000033436000 CR4: 0000000000350ee0 Call Trace: arch_stack_walk+0x77/0xf0 stack_trace_save+0x90/0xd0 kasan_save_stack+0x22/0x50 kasan_set_track+0x25/0x30 __kasan_slab_alloc+0x5c/0x70 kmem_cache_alloc_node+0x1f4/0x420 __alloc_skb+0x21a/0x310 skb_copy+0x13d/0x3d0 mac80211_hwsim_tx_frame_no_nl.isra.0+0xb6d/0x1360 mac80211_hwsim_tx_frame+0x1ee/0x2a0 mac80211_hwsim_beacon_tx+0x566/0xab0 __iterate_interfaces+0x2d3/0x560 ieee80211_iterate_active_interfaces_atomic+0x74/0x180 mac80211_hwsim_beacon+0x105/0x200 __hrtimer_run_queues+0x541/0xb50 hrtimer_run_softirq+0x176/0x350 __do_softirq+0x1c7/0x8f9 __irq_exit_rcu+0x11b/0x180 irq_exit_rcu+0x9/0x30 sysvec_apic_timer_interrupt+0x92/0xc0 asm_sysvec_apic_timer_interrupt+0x1a/0x20 RIP: 0010:preempt_count_add+0xa5/0x150 Code: 00 85 c0 75 39 65 48 8b 2c 25 c0 86 03 00 48 8d bd 40 13 00 00 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 80 3c 02 00 <0f> 85 85 00 00 00 48 89 9d 40 13 00 00 5b 5d e9 8b 0d 1e 03 31 ff RSP: 0018:ffff88804401f060 EFLAGS: 00000246 RAX: dffffc0000000000 RBX: ffffffff8112bd00 RCX: 1ffffffff0f378e8 RDX: 1ffff11008843c70 RSI: ffffffff81fc8713 RDI: ffff88804421e380 RBP: ffff88804421d040 R08: ffffffff8619c264 R09: ffffffff8619c268 R10: ffffed1008803e2c R11: ffff88804401f138 R12: ffff88804401f1c0 R13: 0000000000000000 R14: ffff88804401f0f8 R15: 00000000000000f0 unwind_next_frame+0xb0/0x2130 arch_stack_walk+0x87/0xf0 stack_trace_save+0x90/0xd0 kasan_save_stack+0x22/0x50 kasan_set_track+0x25/0x30 __kasan_slab_alloc+0x5c/0x70 kmem_cache_alloc+0x1e0/0x410 __create_object+0x3d/0xc00 __kmem_cache_alloc_node+0x257/0x400 __kmalloc+0x46/0xc0 bio_kmalloc+0x3e/0x70 blk_rq_map_kern+0x4a5/0x920 __scsi_execute+0x4cc/0x650 sr_check_events+0x182/0xa40 cdrom_check_events+0x68/0x110 sr_block_check_events+0xc3/0x100 disk_check_events+0xc7/0x420 bdev_check_media_change+0x130/0x320 sr_block_open+0x112/0x2b0 blkdev_get_whole+0x9b/0x2d0 blkdev_get_by_dev.part.0+0x5f0/0xb90 blkdev_get_by_dev+0x73/0x90 blkdev_open+0x140/0x2d0 do_dentry_open+0x6ca/0x12b0 path_openat+0x1847/0x29b0 do_filp_open+0x1ba/0x410 do_sys_openat2+0x171/0x4c0 __x64_sys_openat+0x143/0x200 do_syscall_64+0x3f/0x90 entry_SYSCALL_64_after_hwframe+0x72/0xdc RIP: 0033:0x7f86972d7b19 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:00007f869484d188 EFLAGS: 00000246 ORIG_RAX: 0000000000000101 RAX: ffffffffffffffda RBX: 00007f86973eaf60 RCX: 00007f86972d7b19 RDX: 0000000000105802 RSI: 00000000200001c0 RDI: ffffffffffffff9c RBP: 00007f8697331f6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffea2ea5a9f R14: 00007f869484d300 R15: 0000000000022000 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 11029 Comm: syz-executor.4 Not tainted 6.1.0-rc5-next-20221114 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:__sanitizer_cov_trace_pc+0x11/0x70 Code: 66 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 65 8b 05 9d ac ba 7e 89 c1 48 8b 34 24 <81> e1 00 01 00 00 65 48 8b 14 25 c0 86 03 00 a9 00 01 ff 00 74 0e RSP: 0018:ffff88806ce09550 EFLAGS: 00000046 RAX: 0000000000010102 RBX: ffff8880158c34e0 RCX: 0000000000010102 RDX: ffff888040e15040 RSI: ffffffff8157cd0c RDI: 0000000000000005 RBP: ffff88806ce09978 R08: 0000000000000005 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000001 R12: 0000000000000000 R13: ffff88806ce09978 R14: ffff8880158c34e0 R15: dffffc0000000000 FS: 0000000000000000(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00005611b8cd60b0 CR3: 000000000f6f0000 CR4: 0000000000350ef0 Call Trace: perf_exclude_event+0x5c/0x1a0 perf_swevent_hrtimer+0x299/0x3d0 __hrtimer_run_queues+0x184/0xb50 hrtimer_interrupt+0x319/0x770 __sysvec_apic_timer_interrupt+0x148/0x500 sysvec_apic_timer_interrupt+0x3f/0xc0 asm_sysvec_apic_timer_interrupt+0x1a/0x20 RIP: 0010:__kasan_check_read+0x8/0x20 Code: 02 eb dd 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 48 8b 0c 24 <89> f6 31 d2 e9 8f f4 ff ff 66 66 2e 0f 1f 84 00 00 00 00 00 0f 1f RSP: 0018:ffff88806ce09a20 EFLAGS: 00000202 RAX: 0000000000000000 RBX: 0000000000000001 RCX: ffffffff843fe36b RDX: fffffbfff0b48975 RSI: 0000000000000004 RDI: ffffffff85a44ba0 RBP: ffffffff85a44ba0 R08: 0000000000000000 R09: ffffffff85a44ba3 R10: fffffbfff0b48974 R11: 0000000000000001 R12: 0000000000000003 R13: fffffbfff0b48974 R14: 0000000000000001 R15: 1ffff1100d9c1346 queued_spin_lock_slowpath+0xab/0xc80 do_raw_spin_lock+0x1e0/0x270 mac80211_hwsim_tx_frame_no_nl.isra.0+0x6f1/0x1360 mac80211_hwsim_tx_frame+0x1ee/0x2a0 mac80211_hwsim_beacon_tx+0x566/0xab0 __iterate_interfaces+0x2d3/0x560 ieee80211_iterate_active_interfaces_atomic+0x74/0x180 mac80211_hwsim_beacon+0x105/0x200 __hrtimer_run_queues+0x541/0xb50 hrtimer_run_softirq+0x176/0x350 __do_softirq+0x1c7/0x8f9 __irq_exit_rcu+0x11b/0x180 irq_exit_rcu+0x9/0x30 sysvec_apic_timer_interrupt+0x92/0xc0 asm_sysvec_apic_timer_interrupt+0x1a/0x20 RIP: 0010:__sanitizer_cov_trace_const_cmp1+0x4/0x20 Code: f2 48 89 fe bf 06 00 00 00 e9 b8 fe ff ff 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa <48> 8b 0c 24 40 0f b6 d6 40 0f b6 f7 bf 01 00 00 00 e9 86 fe ff ff RSP: 0018:ffff888043c4f6f8 EFLAGS: 00000246 RAX: ffff888043c4f910 RBX: 0000000000000001 RCX: 0000000000000000 RDX: ffff888040e15040 RSI: 0000000000000001 RDI: 0000000000000000 RBP: dffffc0000000000 R08: 0000000000000006 R09: 0000000000041b22 R10: 000000000007ffdf R11: 0000000000000001 R12: ffff88800de4e8d0 R13: ffffea000106c880 R14: 0000000000000001 R15: ffff888043c4fad8 unmap_page_range+0x1880/0x2c30 unmap_single_vma+0x190/0x2a0 unmap_vmas+0x226/0x380 exit_mmap+0x158/0x680 mmput+0xd5/0x390 do_exit+0x99b/0x2720 do_group_exit+0xd4/0x2a0 get_signal+0x21a5/0x22e0 arch_do_signal_or_restart+0x79/0x5a0 exit_to_user_mode_prepare+0x131/0x1a0 syscall_exit_to_user_mode+0x1d/0x50 do_syscall_64+0x4c/0x90 entry_SYSCALL_64_after_hwframe+0x72/0xdc RIP: 0033:0x7f478b54db19 Code: Unable to access opcode bytes at 0x7f478b54daef. RSP: 002b:00007f4788ac3188 EFLAGS: 00000246 ORIG_RAX: 0000000000000028 RAX: fffffffffffffffb RBX: 00007f478b660f60 RCX: 00007f478b54db19 RDX: 0000000000000000 RSI: 0000000000000003 RDI: 0000000000000007 RBP: 00007f478b5a7f6d R08: 0000000000000000 R09: 0000000000000000 R10: 00000000fffffdef R11: 0000000000000246 R12: 0000000000000000 R13: 00007fff240d907f R14: 00007f4788ac3300 R15: 0000000000022000 ---------------- Code disassembly (best guess): 0: e9 52 fd ff ff jmpq 0xfffffd57 5: e8 22 d0 05 03 callq 0x305d02c a: 66 90 xchg %ax,%ax c: 90 nop d: 90 nop e: 90 nop f: 90 nop 10: 90 nop 11: 90 nop 12: 90 nop 13: 90 nop 14: 90 nop 15: 90 nop 16: 90 nop 17: 90 nop 18: 90 nop 19: 90 nop 1a: 90 nop 1b: 90 nop 1c: f3 0f 1e fa endbr64 20: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax 27: fc ff df * 2a: 55 push %rbp <-- trapping instruction 2b: 53 push %rbx 2c: 48 89 fb mov %rdi,%rbx 2f: 48 83 c7 10 add $0x10,%rdi 33: 48 89 fa mov %rdi,%rdx 36: 48 c1 ea 03 shr $0x3,%rdx 3a: 48 83 ec 08 sub $0x8,%rsp 3e: 0f .byte 0xf 3f: b6 .byte 0xb6