[ 401.535698][T11523] loop_set_block_size: loop0 () has still dirty pages (nrpages=2) [ 402.055671][T11547] loop_set_block_size: loop0 () has still dirty pages (nrpages=3) [ 404.105043][T11605] loop_set_block_size: loop0 () has still dirty pages (nrpages=3) [ 405.825312][ T402] syz-executor.0 (402) used greatest stack depth: 19416 bytes left [ 406.145346][ T179] device bridge_slave_1 left promiscuous mode [ 406.151303][ T179] bridge0: port 2(bridge_slave_1) entered disabled state [ 406.159355][ T179] device bridge_slave_0 left promiscuous mode [ 406.165577][ T179] bridge0: port 1(bridge_slave_0) entered disabled state Warning: Permanently added '10.128.0.191' (ED25519) to the list of known hosts. [ 406.804876][T11677] loop_set_block_size: loop0 () has still dirty pages (nrpages=2) [ 407.007161][ T405] kasan: CONFIG_KASAN_INLINE enabled [ 407.012272][ T405] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 407.020663][ T405] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 407.027415][ T405] CPU: 1 PID: 405 Comm: udevd Not tainted 5.4.268-syzkaller-04870-gd0d34dcb02cc #0 [ 407.036985][ T405] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024 [ 407.047083][ T405] RIP: 0010:bdev_read_page+0x37/0x190 [ 407.052352][ T405] Code: 10 49 89 d5 48 89 74 24 08 49 89 fc 49 bf 00 00 00 00 00 fc ff df e8 a8 33 ba ff 49 8d 9c 24 80 00 00 00 48 89 d8 48 c1 e8 03 <42> 80 3c 38 00 74 08 48 89 df e8 0a 07 ea ff bd d0 04 00 00 48 03 [ 407.071888][ T405] RSP: 0018:ffff8881dcb8f3b8 EFLAGS: 00010202 [ 407.077950][ T405] RAX: 0000000000000010 RBX: 0000000000000080 RCX: ffff8881f20c2f40 [ 407.085763][ T405] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 [ 407.093575][ T405] RBP: ffff8881dcb8f5d0 R08: ffffffff81ab48d6 R09: fffff94000ee02d1 [ 407.101393][ T405] R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000000 [ 407.109205][ T405] R13: ffffea0007701680 R14: 0000000000000014 R15: dffffc0000000000 [ 407.117016][ T405] FS: 00007f26761e9c80(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000 [ 407.125905][ T405] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 407.132314][ T405] CR2: 0000000020000000 CR3: 00000001dd064000 CR4: 00000000003406a0 [ 407.140131][ T405] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 407.147961][ T405] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 407.155746][ T405] Call Trace: [ 407.158878][ T405] ? __die+0xb4/0x100 [ 407.163113][ T405] ? die+0x26/0x50 [ 407.166670][ T405] ? do_general_protection+0x266/0x3c0 [ 407.171967][ T405] ? check_preemption_disabled+0x153/0x320 [ 407.177641][ T405] ? do_trap+0x340/0x340 [ 407.181684][ T405] ? debug_smp_processor_id+0x20/0x20 [ 407.186894][ T405] ? __count_memcg_events+0x97/0x210 [ 407.192013][ T405] ? general_protection+0x28/0x30 [ 407.196876][ T405] ? do_mpage_readpage+0xd06/0x1b20 [ 407.201910][ T405] ? bdev_read_page+0x37/0x190 [ 407.206510][ T405] ? bdev_read_page+0x28/0x190 [ 407.211208][ T405] do_mpage_readpage+0x1458/0x1b20 [ 407.216168][ T405] ? mpage_readpages+0x500/0x500 [ 407.220929][ T405] ? add_to_page_cache_lru+0x221/0x2c0 [ 407.226224][ T405] ? get_reg+0x220/0x220 [ 407.230301][ T405] mpage_readpages+0x36e/0x500 [ 407.234900][ T405] ? __bpf_trace_android_fs_data_end_template+0x30/0x30 [ 407.241681][ T405] ? blkdev_direct_IO+0x1e00/0x1e00 [ 407.246819][ T405] ? unwind_next_frame+0x181e/0x1ea0 [ 407.251946][ T405] ? blkdev_writepages+0x20/0x20 [ 407.256726][ T405] read_pages+0x119/0x400 [ 407.260884][ T405] ? __do_page_cache_readahead+0x4f0/0x4f0 [ 407.266599][ T405] ? _raw_spin_trylock+0xcd/0x1a0 [ 407.271473][ T405] __do_page_cache_readahead+0x448/0x4f0 [ 407.276940][ T405] ? read_cache_pages_invalidate_pages+0x1b0/0x1b0 [ 407.283274][ T405] page_cache_sync_readahead+0x3f0/0x460 [ 407.288834][ T405] generic_file_read_iter+0x673/0x21f0 [ 407.294119][ T405] ? entry_SYSCALL_64_after_hwframe+0x5c/0xc1 [ 407.300028][ T405] ? find_get_pages_range_tag+0xae0/0xae0 [ 407.305580][ T405] ? __kasan_slab_free+0x233/0x270 [ 407.310524][ T405] ? __kasan_slab_free+0x1b5/0x270 [ 407.315477][ T405] ? kmem_cache_free+0x10b/0x2c0 [ 407.320241][ T405] ? __fput+0x47a/0x680 [ 407.324235][ T405] ? task_work_run+0x140/0x170 [ 407.329324][ T405] ? exit_to_usermode_loop+0x190/0x1a0 [ 407.334712][ T405] ? prepare_exit_to_usermode+0x199/0x200 [ 407.340261][ T405] blkdev_read_iter+0x12a/0x180 [ 407.344935][ T405] __vfs_read+0x5cd/0x730 [ 407.349198][ T405] ? rw_verify_area+0x360/0x360 [ 407.353884][ T405] ? __fsnotify_update_child_dentry_flags+0x290/0x290 [ 407.360480][ T405] ? security_file_permission+0x1dc/0x2f0 [ 407.366027][ T405] vfs_read+0x148/0x360 [ 407.370022][ T405] ksys_read+0x199/0x2c0 [ 407.374136][ T405] ? debug_smp_processor_id+0x20/0x20 [ 407.379305][ T405] ? vfs_write+0x4e0/0x4e0 [ 407.383563][ T405] ? block_llseek+0xa2/0xb0 [ 407.387910][ T405] do_syscall_64+0xca/0x1c0 [ 407.392257][ T405] entry_SYSCALL_64_after_hwframe+0x5c/0xc1 [ 407.398078][ T405] Modules linked in: [ 407.403180][ T405] ---[ end trace 1e94f6cc348925e0 ]--- [ 407.406200][ T23] audit: type=1400 audit(1712987791.610:143): avc: denied { remove_name } for pid=144 comm="syslogd" name="messages" dev="tmpfs" ino=9283 scontext=system_u:system_r:syslogd_t tcontext=system_u:object_r:tmpfs_t tclass=dir permissive=1 [ 407.431091][ T405] RIP: 0010:bdev_read_page+0x37/0x190 [ 407.433753][ T23] audit: type=1400 audit(1712987791.610:144): avc: denied { rename } for pid=144 comm="syslogd" name="messages" dev="tmpfs" ino=9283 scontext=system_u:system_r:syslogd_t tcontext=system_u:object_r:tmpfs_t tclass=file permissive=1 [ 407.444798][ T405] Code: 10 49 89 d5 48 89 74 24 08 49 89 fc 49 bf 00 00 00 00 00 fc ff df e8 a8 33 ba ff 49 8d 9c 24 80 00 00 00 48 89 d8 48 c1 e8 03 <42> 80 3c 38 00 74 08 48 89 df e8 0a 07 ea ff bd d0 04 00 00 48 03 [ 407.460746][ T23] audit: type=1400 audit(1712987791.610:145): avc: denied { create } for pid=144 comm="syslogd" name="messages" scontext=system_u:system_r:syslogd_t tcontext=system_u:object_r:tmpfs_t tclass=file permissive=1 [ 407.498610][ T405] RSP: 0018:ffff8881dcb8f3b8 EFLAGS: 00010202 [ 407.505065][ T405] RAX: 0000000000000010 RBX: 0000000000000080 RCX: ffff8881f20c2f40 [ 407.512877][ T405] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 [ 407.521469][ T405] RBP: ffff8881dcb8f5d0 R08: ffffffff81ab48d6 R09: fffff94000ee02d1 [ 407.529309][ T405] R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000000 [ 407.537091][ T405] R13: ffffea0007701680 R14: 0000000000000014 R15: dffffc0000000000 [ 407.544914][ T405] FS: 00007f26761e9c80(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000 [ 407.553767][ T405] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 407.560218][ T405] CR2: 00007ffc6cf813f8 CR3: 00000001dd064000 CR4: 00000000003406b0 [ 407.568029][ T405] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 407.575844][ T405] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 407.583714][ T405] Kernel panic - not syncing: Fatal exception [ 407.589831][ T405] Kernel Offset: disabled [ 407.593924][ T405] Rebooting in 86400 seconds..