syzbot

 sign-in | mailing list | source | docs | 🏰
🐞 Open [1311]
≡ Subsystems
🐞 Fixed [7207]
🐞 Invalid [19036]
⬇ Missing Backports [221]
≡ Crashes
Kernel Health Bugs/Month Bug Lifetimes Fuzzing
Total Repo Heatmap Subsystems Heatmap
✨ AI
💬 Send us feedback

Applied filters: Label=subsystems:mm (drop)
Extra filters: [With Repro] [With AI Patch Pending Review]
open (131) 🔗
Title Rank 🛈 Repro Cause bisect Fix bisect Count Last Reported Discussions
INFO: rcu detected stall in unmap_region prio:normal mm 1 syz error 4 4d05h 5h28m
INFO: rcu detected stall in sys_epoll_wait (9) mm usb input prio:high 1 C error 1 5d16h 3d15h
INFO: rcu detected stall in dentry_kill prio:high fs mm 1 C error 10 2d15h 13d PATCH [11h26m]
KCSAN: data-race in __anon_vma_prepare / __vmf_anon_prepare (2) mm race:harmful prio:low 6 1 13d 13d 💬 1 [10d]
KCSAN: data-race in __percpu_counter_limited_add / percpu_counter_add_batch (3) mm race:harmful prio:low 6 1 13d 13d
KASAN: invalid-free in rcu_free_sheaf mm prio:high 24 5 11d 20d
WARNING in hrtick_start_fair cgroups mm prio:high -1 C error 10116 9d15h 23d
KASAN: use-after-free Read in ptdump_pte_entry (2) actionable prio:normal mm 19 1 30d 23d PATCH [1d03h]
upstream test error: WARNING in call_timer_fn prio:high mm -1 1 30d 26d 💬 1 [26d]
linux-next test error: kernel BUG in post_alloc_hook mm prio:low -1 4 29d 29d 💬 2 [29d]
WARNING in swap_cluster_assert_empty prio:low mm -1 1 35d 31d PATCH [29d]
possible deadlock in page_cache_ra_order prio:high mm fs 4 5 37d 33d
KCSAN: data-race in _copy_to_iter / _copy_to_iter (2) race:harmful prio:low mm 6 2 16h42m 34d
INFO: rcu detected stall in clone3 (6) prio:high mm cgroups 1 36 8h14m 36d
WARNING in alloc_frozen_pages_noprof (2) prio:high mm -1 C 3 14d 38d PATCH [36d]
BUG: unable to handle kernel NULL pointer dereference in qlist_free_all (10) prio:low mm ext4 10 C 3 29d 43d
WARNING in folio_lruvec_relock_irqsave prio:high mm -1 1 48d 44d
possible deadlock in hugetlbfs_fallocate prio:low fs mm 4 2 45d 47d
possible deadlock in gup_fast_fallback (3) prio:low mm 4 14 8h31m 51d 💬 1 [51d]
possible deadlock in hugetlb_vma_lock_write prio:low mm net 4 2 34d 52d PATCH [50d]
BUG: sleeping function called from invalid context in vma_alloc_folio_noprof (2) mm 5 1 65d 61d 💬 3 [59d]
BUG: sleeping function called from invalid context in __tlb_batch_free_encoded_pages prio:high arch mm 5 3 63d 64d 💬 2 [31d]
WARNING in __page_cache_release prio:low mm -1 1 68d 64d
BUG: sleeping function called from invalid context in shmem_undo_range prio:high mm 5 1 71d 70d 💬 2 [70d]
BUG: sleeping function called from invalid context in __zap_vma_range prio:high mm 5 4 51d 73d 💬 2 [72d]
KCSAN: data-race in mas_wr_store_entry / mtree_range_walk (2) prio:low mm 6 72 4d19h 77d 💬 7 [22d]
BUG: sleeping function called from invalid context in kvm_xen_set_evtchn_fast prio:high mm kvm kvm-x86 5 2 70d 77d PATCH [28d]
INFO: rcu detected stall in kcov_ioctl (3) prio:high mm 1 31 13d 85d 💬 1 [85d]
WARNING in rcu_tasks_verify_work_fn prio:low mm -1 13 5h42m 93d PATCH [71d]
KASAN: use-after-free Read in copy_folio_from_iter_atomic (2) prio:high jfs mm 19 C error 22946 9m 95d PATCH [69d]
KMSAN: uninit-value in copy_from_kernel_nofault prio:high mm 7 21 5d16h 109d 💬 3 [108d]
possible deadlock in mfill_get_vma prio:low mm 4 C 290 56d 109d PATCH [109d]
WARNING: suspicious RCU usage in usb_tx_block prio:high mm 4 4 83d 116d
INFO: rcu detected stall in __dentry_kill prio:high mm 1 syz error 132 18d 122d
possible deadlock in lock_mm_and_find_vma (4) prio:low mm 4 2231 7m 126d 💬 2 [72d]
WARNING in __put_task_struct (6) prio:high mm -1 5 82d 129d
WARNING: refcount bug in call_timer_fn (4) prio:high mm virt 13 25 7d00h 131d 💬 1 [1d09h]
kernel BUG in __page_table_check_zero (3) prio:high mm -1 277 4d02h 134d PATCH [16d]
INFO: rcu detected stall in sendfile64 prio:high mm 1 39 14d 138d
memory leak in __kfree_rcu_sheaf prio:high mm f2fs exfat 3 syz 1 144d 143d 💬 28 [59d]
BUG: Bad rss-counter state (6) prio:high mm -1 109 2d06h 145d
kernel BUG in page_table_check_set (2) prio:low mm -1 710 4d03h 147d 💬 1 [145d]
INFO: rcu detected stall in vma_merge_new_range (3) prio:low bpf mm 1 syz error error 2 73d 157d
INFO: rcu detected stall in schedule_tail (8) prio:low mm 1 C error error 1 159d 157d
INFO: rcu detected stall in __mmap_complete prio:normal mm 1 syz error error 7 145d 179d
INFO: rcu detected stall in sys_newfstat (4) prio:low mm 1 C error 45 7h00m 193d
INFO: rcu detected stall in sys_io_uring_enter (3) mm prio:low 1 51 5d03h 195d
INFO: rcu detected stall in finish_dput prio:low mm 1 C error error 138 164d 200d
BUG: sleeping function called from invalid context in kvm_mmu_notifier_invalidate_range_start prio:high mm 5 syz 11 20d 207d PATCH [25d]
WARNING in sched_mm_cid_fork prio:low fs mm -1 C error error 332 149d 212d PATCH [191d]
INFO: rcu detected stall in call_usermodehelper_exec_async (4) prio:low mm 1 C error 13 9d20h 217d
general protection fault in __rt_mutex_slowlock_locked prio:high mm 2 24 80d 233d
INFO: rcu detected stall in sys_symlink (6) prio:high fs mm 1 C error inconclusive 6 54d 248d
INFO: rcu detected stall in shmem_file_write_iter (3) prio:low mm 1 C 85 9d19h 254d
INFO: task hung in migrate_pages_batch (4) prio:high mm 1 210 1d09h 262d
WARNING in path_noexec (2) prio:low fs mm -1 C error 27195 4d06h 275d PATCH [265d]
WARNING in ext4_mb_load_buddy_gfp prio:high ext4 mm -1 C 7 125d 291d PATCH [281d]
INFO: rcu detected stall in sys_madvise (2) prio:high mm 1 60 8h33m 306d
INFO: task hung in writeback_iter (3) prio:high fs mm 1 C error error 20 3d15h 309d PATCH [163d]
WARNING in __alloc_skb (4) mm -1 C 8 112d 309d PATCH [285d]
INFO: rcu detected stall in sys_mount (8) mm prio:low 1 C error 37 4d12h 309d 💬 1 [309d]
INFO: rcu detected stall in sys_munmap (2) prio:low mm 1 C error error 44 27d 315d 💬 7 [195d]
KASAN: slab-use-after-free Read in lru_add (2) prio:high gfs2 mm 19 C error 12 54d 332d
WARNING in trace_suspend_resume prio:high mm -1 C 3838 1d12h 336d 💬 1 [9d15h]
INFO: rcu detected stall in kernfs_fop_open (7) prio:high kernfs mm 1 C error error 10 6d07h 339d
INFO: rcu detected stall in devtmpfsd (3) prio:low mm 1 C error inconclusive 5 26d 347d 💬 2 [347d]
INFO: rcu detected stall in linkwatch_event (5) prio:normal net mm 1 syz error error 3 184d 372d
INFO: rcu detected stall in exit_to_user_mode_loop prio:low mm 1 C error 578 1d12h 376d 💬 1 [339d]
INFO: rcu detected stall in vm_area_alloc (6) prio:normal mm 1 syz error error 13 40d 399d
INFO: rcu detected stall in vms_gather_munmap_vmas prio:normal mm 1 syz error error 61 10d 414d
INFO: rcu detected stall in ext4_end_io_rsv_work (3) prio:normal mm ext4 1 C error error 3 180d 417d
INFO: rcu detected stall in wg_packet_handshake_receive_worker (3) prio:normal mm 1 syz error error 18 20d 424d
INFO: rcu detected stall in nsim_fib_event_work prio:high mm 1 C error error 9 1d05h 427d
INFO: task hung in exit_mmap (2) prio:low mm 1 C done error 59 73d 434d
kernel BUG in __filemap_add_folio prio:low fs mm -1 C done 2028 3h50m 434d PATCH [197d]
BUG: soft lockup in sys_bpf prio:low mm 1 C error 188 9h16m 436d
INFO: task hung in page_cache_ra_order prio:low fs mm 1 C done 115 4d06h 436d 💬 1 [436d]
INFO: rcu detected stall in clone (7) prio:high mm 1 110 2d12h 463d
INFO: rcu detected stall in sys_mkdir (9) prio:high mm 1 syz done error 6 45d 524d
INFO: rcu detected stall in task_numa_work (2) bpf mm 1 C error error 27 13d 545d
INFO: rcu detected stall in mas_preallocate (2) mm 1 syz done error 11 20d 571d 💬 6 [480d]
INFO: rcu detected stall in sys_umount (3) prio:low mm 1 C done error 57 12d 572d 💬 2 [318d]
possible deadlock in balance_pgdat (2) mm scsi 4 C 4 541d 575d 💬 1 [532d]
INFO: rcu detected stall in sys_sendmmsg (7) prio:high mm 1 139 6d22h 579d
KASAN: slab-use-after-free Read in folio_evictable (3) prio:high gfs2 mm 19 C 76 12d 584d 💬 7 [9d15h]
INFO: rcu detected stall in sys_mmap (3) mm 1 C error error 63 12h11m 584d
INFO: rcu detected stall in sys_setsockopt (4) prio:high mm 1 C done inconclusive 91 3d15h 585d
INFO: rcu detected stall in security_file_ioctl (9) prio:normal mm 1 syz error 162 3d12h 588d
INFO: rcu detected stall in sys_pipe2 (2) prio:low mm 1 syz done done 131 7d07h 599d
INFO: rcu detected stall in brk (2) prio:high mm 1 syz 3 79d 609d 💬 8 [609d]
INFO: rcu detected stall in kthreadd (2) mm 1 C unreliable error 128 4d12h 611d
INFO: rcu detected stall in sys_readlink (5) prio:normal kernfs mm btrfs 1 syz done error 53 3d11h 623d
INFO: rcu detected stall in seq_read_iter (2) mm 1 C inconclusive error 10 45d 624d 💬 1 [624d]
WARNING: ODEBUG bug in __folio_put (2) prio:high usb mm -1 syz 28 337d 625d
INFO: rcu detected stall in sys_mprotect (8) prio:normal mm 1 syz done error 117 1d01h 630d
INFO: rcu detected stall in kjournald2 (2) mm block 1 C error error 88 13d 638d
INFO: rcu detected stall in vhci_release prio:high mm 1 syz done done 14 42d 643d
INFO: rcu detected stall in shmem_fault (6) mm prio:low 1 C 247 1d13h 651d PATCH [634d]
INFO: rcu detected stall in sys_execve (6) prio:normal mm 1 C done error 84 18d 654d
INFO: rcu detected stall in x64_sys_call prio:low mm 1 C error 571 4d06h 661d
BUG: corrupted list in add_to_unbuddied mm 8 syz 43 468d 662d 💬 4 [623d]
INFO: task hung in page_cache_ra_unbounded (2) fs mm 1 C done error 3651 161d 669d 💬 1 [165d]
INFO: rcu detected stall in kcov_close prio:normal mm 1 221 9d03h 690d
kernel panic: System is deadlocked on memory (2) prio:high mm 2 175 6h45m 690d
INFO: rcu detected stall in vm_mmap_pgoff prio:normal mm 1 syz 115 13d 691d PATCH [634d]
WARNING in drm_mode_create_lease_ioctl prio:low mm -1 C inconclusive error 86 31d 736d PATCH [517d]
INFO: rcu detected stall in addrconf_rs_timer (6) prio:normal virt mm netfilter 1 syz error error 703 4d13h 761d
WARNING in shmem_evict_inode (3) prio:normal mm -1 93 5d00h 769d
INFO: rcu detected stall in sendmsg (4) prio:high mm 1 C error error 64 62d 770d
INFO: rcu detected stall in sys_sendto (7) prio:low mm 1 C error error 398 6d06h 772d
INFO: rcu detected stall in validate_mm (3) mm 1 C error error 41 1d15h 782d 💬 5 [724d]
inconsistent lock state in __mmap_lock_do_trace_acquire_returned mm 4 C error inconclusive 498 713d 820d 💬 2 [699d]
INFO: rcu detected stall in sys_clone (8) mm 1 C error 452 1d18h 826d 💬 10 [372d]
INFO: rcu detected stall in sys_syslog (2) mm 1 C error error 50 6d15h 863d
BUG: soft lockup in pipe_read fs mm 1 syz 5 513d 890d
INFO: task hung in _vm_unmap_aliases (3) prio:low mm 1 C 696 11h51m 905d
INFO: rcu detected stall in sys_recvmmsg (3) prio:low mm 1 270 1d09h 927d
INFO: rcu detected stall in sys_socket (10) mm 1 C done 258 4d20h 945d 💬 6 [941d]
BUG: spinlock recursion in try_to_wake_up crypto mm 4 C 9 680d 962d
BUG: unable to handle kernel NULL pointer dereference in __kmap_local_page_prot prio:low mm 10 C 138 722d 1002d PATCH [343d]
kernel BUG in filemap_unaccount_folio prio:high mm -1 C done error 495 12d 1030d 💬 4 [9d15h]
INFO: rcu detected stall in sys_openat (3) prio:low mm 1 C error 625 1d07h 1034d
INFO: rcu detected stall in sys_unlink (3) mm 1 C error 392 10d 1054d
KCSAN: data-race in __filemap_remove_folio / folio_mapping (2) prio:low mm 6 1051 3d09h 1166d PATCH [102d]
possible deadlock in filemap_fault prio:high mm 4 C done 3075 1d04h 1337d PATCH [2d11h]
INFO: rcu detected stall in sys_newfstatat (4) prio:high mm tomoyo 1 C error 570 3d17h 1347d 💬 1 [12d]
memory leak in xas_create prio:high mm 3 C 51 6d02h 1455d PATCH [220d]
WARNING in ext4_dirty_folio mm prio:low -1 C inconclusive done 25907 3d23h 1559d 💬 2 [40d]
INFO: task hung in do_read_cache_folio kasan mm block 1 C error error 179 1105d 1607d 💬 3 [1092d]
INFO: task can't die in wait_on_page_bit_common fs mm 1 C done 5 1781d 2134d
INFO: task hung in do_read_cache_page (3) mm fs 1 C done inconclusive 88 1451d 2349d 💬 2 [2243d]
moderation (45) 🔗
Title Rank 🛈 Repro Cause bisect Fix bisect Count Last Reported Discussions
KCSAN: data-race in __wb_writeout_add / writeout_period (6) fs mm race:benign prio:high 6 1 3d05h 3d05h
KCSAN: data-race in generic_fillattr / shmem_symlink (7) mm race:benign prio:low 6 1 7d15h 7d15h
KCSAN: data-race in copy_mm / vm_mmap_pgoff (3) mm race:benign prio:low 6 1 9d17h 9d17h
KCSAN: data-race in _copy_to_iter / copy_folio_from_iter_atomic (4) mm race:benign prio:low 6 2 11d 14d
upstream test error: KCSAN: data-race in __xa_clear_mark / xas_find_marked (6) fs mm prio:high -1 1 19d 19d
KCSAN: data-race in fprop_reflect_period_percpu / fprop_reflect_period_percpu (10) fs mm race:benign prio:high 6 1 21d 21d
KCSAN: data-race in __wb_update_bandwidth / percpu_counter_add_batch (12) mm fs race:benign prio:high 6 1 21d 21d
KCSAN: data-race in fprop_new_period / fprop_reflect_period_percpu (12) mm fs race:benign prio:low 6 1 24d 24d
KCSAN: data-race in __lru_add_drain_all / deactivate_file_folio (5) mm prio:low race:benign 6 1 25d 25d
BUG: soft lockup in pid_child_should_wake prio:low mm 1 2 4d21h 31d
KCSAN: data-race in copy_process / show_stat (5) race:benign prio:low mm 6 1 34d 34d
WARNING in do_mmap prio:low mm fs -1 1 42d 38d
KCSAN: data-race in filemap_fault / filemap_read_folio race:benign prio:low mm 6 1 43d 43d
KCSAN: data-race in copy_mm / mmap_write_unlock race:benign prio:low mm 6 1 44d 44d
KCSAN: data-race in __writeback_single_inode / xas_clear_mark (9) race:benign prio:low fs mm 6 2 3d08h 49d
KCSAN: data-race in __anon_vma_prepare / do_wp_page (3) prio:low mm 6 1 55d 55d
KCSAN: data-race in __mmput / copy_mm (3) prio:low mm 6 1 55d 55d
KCSAN: data-race in folios_put_refs / need_mlock_drain (4) prio:low mm 6 3 3d14h 61d
KCSAN: data-race in mlock_folio / need_mlock_drain (10) prio:low mm 6 2 39d 64d
KCSAN: data-race in __anon_vma_prepare / handle_mm_fault (6) prio:low mm 6 2 36d 68d
KASAN: slab-use-after-free Read in debug_check_no_obj_freed prio:high mm 19 1 74d 70d
KCSAN: data-race in mas_walk / mas_wmb_replace (2) prio:low mm 6 28 7d08h 77d
KCSAN: data-race in mas_wmb_replace / mtree_range_walk (2) prio:low mm 6 54 14h00m 78d
KCSAN: data-race in shmem_fallocate / shmem_writeout prio:low mm 6 90 8d03h 166d
KCSAN: data-race in copy_mm / copy_page_range (3) prio:low mm 6 9 42d 238d
KCSAN: data-race in __percpu_counter_init_many / copy_mm (2) prio:low mm 6 30 5d07h 292d
KCSAN: data-race in _copy_from_iter / _copy_from_iter (5) prio:low mm 6 149 29d 458d
KCSAN: data-race in fill_mg_cmtime / shmem_symlink prio:low mm 6 161 1d11h 588d
KCSAN: data-race in fill_mg_cmtime / shmem_mknod prio:low mm 6 615 7h46m 590d
KCSAN: data-race in file_write_and_wait_range / xas_set_mark (2) prio:low mm fs 6 952 7d17h 591d
KCSAN: data-race in shmem_fallocate / shmem_fault (9) prio:low mm 6 121 4d15h 624d PATCH [2d11h]
KCSAN: data-race in shmem_add_to_page_cache / shmem_getattr (5) prio:low mm 6 220 2d21h 727d
KCSAN: data-race in shmem_getattr / shmem_recalc_inode prio:low mm 6 220 3h51m 728d
KCSAN: data-race in __filemap_remove_folio / nr_blockdev_pages (5) prio:low mm 6 158 9d07h 730d
KCSAN: data-race in __writeback_single_inode / xas_set_mark (6) prio:low mm fs 6 869 11d 787d
KCSAN: data-race in mlock_new_folio / need_mlock_drain (3) prio:low mm 6 92 29d 813d
KCSAN: data-race in __lru_add_drain_all / folios_put_refs prio:low mm 6 214 1d18h 816d
KCSAN: data-race in __filemap_add_folio / nr_blockdev_pages (3) prio:low ext4 mm 6 175 23d 936d
KCSAN: data-race in shmem_file_splice_read / shmem_file_splice_read race:benign prio:low mm 6 2829 5h28m 937d
KCSAN: data-race in __filemap_add_folio / filemap_write_and_wait_range prio:low mm 6 966 4d01h 1638d
KCSAN: data-race in __lru_add_drain_all / folio_add_lru prio:low mm 6 1954 6h33m 1661d
KCSAN: data-race in __xa_clear_mark / xas_find_marked (2) prio:high mm fs 6 5413 5h37m 1832d
KCSAN: data-race in __xa_set_mark / xas_find_marked prio:low fs mm 6 1675 1d11h 2107d
KCSAN: data-race in xas_clear_mark / xas_find_marked (2) prio:low fs mm 6 4159 4d10h 2396d
KCSAN: data-race in xas_find_marked / xas_set_mark prio:low fs mm 6 2575 1d10h 2402d